Commit | Line | Data |
---|---|---|
14a5cf38 | 1 | /* |
5cb43542 RGS |
2 | * perlio.c |
3 | * Copyright (c) 1996-2006, Nick Ing-Simmons | |
2eee27d7 | 4 | * Copyright (c) 2006, 2007, 2008, 2009, 2010, 2011 Larry Wall and others |
5cb43542 RGS |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public License | |
7 | * or the Artistic License, as specified in the README file. | |
760ac839 LW |
8 | */ |
9 | ||
14a5cf38 | 10 | /* |
d31a8517 AT |
11 | * Hour after hour for nearly three weary days he had jogged up and down, |
12 | * over passes, and through long dales, and across many streams. | |
4ac71550 TC |
13 | * |
14 | * [pp.791-792 of _The Lord of the Rings_, V/iii: "The Muster of Rohan"] | |
d31a8517 AT |
15 | */ |
16 | ||
166f8a29 DM |
17 | /* This file contains the functions needed to implement PerlIO, which |
18 | * is Perl's private replacement for the C stdio library. This is used | |
19 | * by default unless you compile with -Uuseperlio or run with | |
20 | * PERLIO=:stdio (but don't do this unless you know what you're doing) | |
21 | */ | |
22 | ||
d31a8517 | 23 | /* |
71200d45 | 24 | * If we have ActivePerl-like PERL_IMPLICIT_SYS then we need a dTHX to get |
14a5cf38 | 25 | * at the dispatch tables, even when we do not need it for other reasons. |
71200d45 | 26 | * Invent a dSYS macro to abstract this out |
14a5cf38 | 27 | */ |
7bcba3d4 | 28 | #ifdef PERL_IMPLICIT_SYS |
d0e4ea4d | 29 | # define dSYS dTHX |
7bcba3d4 | 30 | #else |
d0e4ea4d | 31 | # define dSYS dNOOP |
7bcba3d4 NIS |
32 | #endif |
33 | ||
6f9d8c32 | 34 | #define PERLIO_NOT_STDIO 0 |
760ac839 | 35 | /* |
6f9d8c32 | 36 | * This file provides those parts of PerlIO abstraction |
88b61e10 | 37 | * which are not #defined in perlio.h. |
6f9d8c32 | 38 | * Which these are depends on various Configure #ifdef's |
760ac839 LW |
39 | */ |
40 | ||
41 | #include "EXTERN.h" | |
864dbfa3 | 42 | #define PERL_IN_PERLIO_C |
760ac839 LW |
43 | #include "perl.h" |
44 | ||
6e512bc2 | 45 | #ifdef MULTIPLICITY |
d0e4ea4d KW |
46 | # undef dSYS |
47 | # define dSYS dTHX | |
32af7c23 CL |
48 | #endif |
49 | ||
0c4f7ff0 NIS |
50 | #include "XSUB.h" |
51 | ||
25bbd826 | 52 | #ifdef VMS |
d0e4ea4d | 53 | # include <rms.h> |
25bbd826 CB |
54 | #endif |
55 | ||
fabf023f | 56 | #define PerlIO_lockcnt(f) (((PerlIOl*)(void*)(f))->head->flags) |
abf9167d | 57 | |
1b7a0411 | 58 | /* Call the callback or PerlIOBase, and return failure. */ |
b32dd47e | 59 | #define Perl_PerlIO_or_Base(f, callback, base, failure, args) \ |
1604cfb0 MS |
60 | if (PerlIOValid(f)) { \ |
61 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ | |
62 | if (tab && tab->callback) \ | |
63 | return (*tab->callback) args; \ | |
64 | else \ | |
65 | return PerlIOBase_ ## base args; \ | |
66 | } \ | |
67 | else \ | |
68 | SETERRNO(EBADF, SS_IVCHAN); \ | |
69 | return failure | |
1b7a0411 JH |
70 | |
71 | /* Call the callback or fail, and return failure. */ | |
b32dd47e | 72 | #define Perl_PerlIO_or_fail(f, callback, failure, args) \ |
1604cfb0 MS |
73 | if (PerlIOValid(f)) { \ |
74 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ | |
75 | if (tab && tab->callback) \ | |
76 | return (*tab->callback) args; \ | |
77 | SETERRNO(EINVAL, LIB_INVARG); \ | |
78 | } \ | |
79 | else \ | |
80 | SETERRNO(EBADF, SS_IVCHAN); \ | |
81 | return failure | |
1b7a0411 JH |
82 | |
83 | /* Call the callback or PerlIOBase, and be void. */ | |
b32dd47e | 84 | #define Perl_PerlIO_or_Base_void(f, callback, base, args) \ |
1604cfb0 MS |
85 | if (PerlIOValid(f)) { \ |
86 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ | |
87 | if (tab && tab->callback) \ | |
88 | (*tab->callback) args; \ | |
89 | else \ | |
90 | PerlIOBase_ ## base args; \ | |
91 | } \ | |
92 | else \ | |
93 | SETERRNO(EBADF, SS_IVCHAN) | |
1b7a0411 JH |
94 | |
95 | /* Call the callback or fail, and be void. */ | |
b32dd47e | 96 | #define Perl_PerlIO_or_fail_void(f, callback, args) \ |
1604cfb0 MS |
97 | if (PerlIOValid(f)) { \ |
98 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab;\ | |
99 | if (tab && tab->callback) \ | |
100 | (*tab->callback) args; \ | |
101 | else \ | |
102 | SETERRNO(EINVAL, LIB_INVARG); \ | |
103 | } \ | |
104 | else \ | |
105 | SETERRNO(EBADF, SS_IVCHAN) | |
1b7a0411 | 106 | |
89a3a251 JH |
107 | #if defined(__osf__) && _XOPEN_SOURCE < 500 |
108 | extern int fseeko(FILE *, off_t, int); | |
109 | extern off_t ftello(FILE *); | |
110 | #endif | |
111 | ||
76e6dc3a KW |
112 | #define NATIVE_0xd CR_NATIVE |
113 | #define NATIVE_0xa LF_NATIVE | |
114 | ||
a0c21aa1 JH |
115 | EXTERN_C int perlsio_binmode(FILE *fp, int iotype, int mode); |
116 | ||
71ab4674 SP |
117 | int |
118 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
119 | { | |
120 | /* | |
121 | * This used to be contents of do_binmode in doio.c | |
122 | */ | |
123 | #ifdef DOSISH | |
71ab4674 | 124 | dTHX; |
58c0efa5 | 125 | PERL_UNUSED_ARG(iotype); |
71ab4674 | 126 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { |
71ab4674 SP |
127 | return 1; |
128 | } | |
129 | else | |
130 | return 0; | |
71ab4674 SP |
131 | #else |
132 | # if defined(USEMYBINMODE) | |
133 | dTHX; | |
58c0efa5 RGS |
134 | # if defined(__CYGWIN__) |
135 | PERL_UNUSED_ARG(iotype); | |
136 | # endif | |
71ab4674 SP |
137 | if (my_binmode(fp, iotype, mode) != FALSE) |
138 | return 1; | |
139 | else | |
140 | return 0; | |
141 | # else | |
142 | PERL_UNUSED_ARG(fp); | |
143 | PERL_UNUSED_ARG(iotype); | |
144 | PERL_UNUSED_ARG(mode); | |
145 | return 1; | |
146 | # endif | |
147 | #endif | |
148 | } | |
71ab4674 | 149 | |
06c7082d | 150 | #ifndef O_ACCMODE |
d0e4ea4d | 151 | # define O_ACCMODE 3 /* Assume traditional implementation */ |
06c7082d NIS |
152 | #endif |
153 | ||
154 | int | |
155 | PerlIO_intmode2str(int rawmode, char *mode, int *writing) | |
156 | { | |
de009b76 | 157 | const int result = rawmode & O_ACCMODE; |
06c7082d NIS |
158 | int ix = 0; |
159 | int ptype; | |
160 | switch (result) { | |
161 | case O_RDONLY: | |
1604cfb0 MS |
162 | ptype = IoTYPE_RDONLY; |
163 | break; | |
06c7082d | 164 | case O_WRONLY: |
1604cfb0 MS |
165 | ptype = IoTYPE_WRONLY; |
166 | break; | |
06c7082d NIS |
167 | case O_RDWR: |
168 | default: | |
1604cfb0 MS |
169 | ptype = IoTYPE_RDWR; |
170 | break; | |
06c7082d NIS |
171 | } |
172 | if (writing) | |
1604cfb0 | 173 | *writing = (result != O_RDONLY); |
06c7082d NIS |
174 | |
175 | if (result == O_RDONLY) { | |
1604cfb0 | 176 | mode[ix++] = 'r'; |
06c7082d NIS |
177 | } |
178 | #ifdef O_APPEND | |
179 | else if (rawmode & O_APPEND) { | |
1604cfb0 MS |
180 | mode[ix++] = 'a'; |
181 | if (result != O_WRONLY) | |
182 | mode[ix++] = '+'; | |
06c7082d NIS |
183 | } |
184 | #endif | |
185 | else { | |
1604cfb0 MS |
186 | if (result == O_WRONLY) |
187 | mode[ix++] = 'w'; | |
188 | else { | |
189 | mode[ix++] = 'r'; | |
190 | mode[ix++] = '+'; | |
191 | } | |
06c7082d | 192 | } |
43e5477e JH |
193 | #if O_BINARY != 0 |
194 | /* Unless O_BINARY is different from zero, bit-and:ing | |
195 | * with it won't do much good. */ | |
06c7082d | 196 | if (rawmode & O_BINARY) |
1604cfb0 | 197 | mode[ix++] = 'b'; |
d0e4ea4d | 198 | #endif |
06c7082d NIS |
199 | mode[ix] = '\0'; |
200 | return ptype; | |
201 | } | |
202 | ||
eb73beca NIS |
203 | #ifndef PERLIO_LAYERS |
204 | int | |
205 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) | |
206 | { | |
6874a2de NIS |
207 | if (!names || !*names |
208 | || strEQ(names, ":crlf") | |
209 | || strEQ(names, ":raw") | |
210 | || strEQ(names, ":bytes") | |
211 | ) { | |
1604cfb0 | 212 | return 0; |
14a5cf38 JH |
213 | } |
214 | Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); | |
215 | /* | |
71200d45 | 216 | * NOTREACHED |
14a5cf38 JH |
217 | */ |
218 | return -1; | |
eb73beca NIS |
219 | } |
220 | ||
13621cfb NIS |
221 | void |
222 | PerlIO_destruct(pTHX) | |
223 | { | |
224 | } | |
225 | ||
f5b9d040 NIS |
226 | int |
227 | PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) | |
228 | { | |
14a5cf38 | 229 | return perlsio_binmode(fp, iotype, mode); |
f5b9d040 | 230 | } |
60382766 | 231 | |
e0fa5af2 | 232 | PerlIO * |
ecdeb87c | 233 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
e0fa5af2 | 234 | { |
d0e4ea4d | 235 | # if defined(PERL_MICRO) |
0553478e | 236 | return NULL; |
d0e4ea4d | 237 | # elif defined(PERL_IMPLICIT_SYS) |
22569500 | 238 | return PerlSIO_fdupopen(f); |
d0e4ea4d KW |
239 | # else |
240 | # ifdef WIN32 | |
30753f56 | 241 | return win32_fdupopen(f); |
d0e4ea4d | 242 | # else |
e0fa5af2 | 243 | if (f) { |
1604cfb0 MS |
244 | const int fd = PerlLIO_dup_cloexec(PerlIO_fileno(f)); |
245 | if (fd >= 0) { | |
246 | char mode[8]; | |
1604cfb0 | 247 | const int omode = fcntl(fd, F_GETFL); |
1604cfb0 MS |
248 | PerlIO_intmode2str(omode,mode,NULL); |
249 | /* the r+ is a hack */ | |
250 | return PerlIO_fdopen(fd, mode); | |
251 | } | |
252 | return NULL; | |
e0fa5af2 NIS |
253 | } |
254 | else { | |
1604cfb0 | 255 | SETERRNO(EBADF, SS_IVCHAN); |
e0fa5af2 | 256 | } |
d0e4ea4d | 257 | # endif |
e0fa5af2 | 258 | return NULL; |
d0e4ea4d | 259 | # endif |
e0fa5af2 NIS |
260 | } |
261 | ||
262 | ||
14a5cf38 | 263 | /* |
71200d45 | 264 | * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries |
14a5cf38 | 265 | */ |
ee518936 NIS |
266 | |
267 | PerlIO * | |
14a5cf38 | 268 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1604cfb0 | 269 | int imode, int perm, PerlIO *old, int narg, SV **args) |
14a5cf38 | 270 | { |
7cf31beb | 271 | if (narg) { |
1604cfb0 MS |
272 | if (narg > 1) { |
273 | Perl_croak(aTHX_ "More than one argument to open"); | |
274 | } | |
275 | if (*args == &PL_sv_undef) | |
276 | return PerlIO_tmpfile(); | |
277 | else { | |
41188aa0 | 278 | STRLEN len; |
1604cfb0 | 279 | const char *name = SvPV_const(*args, len); |
41188aa0 | 280 | if (!IS_SAFE_PATHNAME(name, len, "open")) |
c8028aa6 TC |
281 | return NULL; |
282 | ||
1604cfb0 MS |
283 | if (*mode == IoTYPE_NUMERIC) { |
284 | fd = PerlLIO_open3_cloexec(name, imode, perm); | |
285 | if (fd >= 0) | |
286 | return PerlIO_fdopen(fd, mode + 1); | |
287 | } | |
288 | else if (old) { | |
289 | return PerlIO_reopen(name, mode, old); | |
290 | } | |
291 | else { | |
292 | return PerlIO_open(name, mode); | |
293 | } | |
294 | } | |
14a5cf38 JH |
295 | } |
296 | else { | |
3ae398fb | 297 | return PerlIO_fdopen(fd, mode); |
14a5cf38 JH |
298 | } |
299 | return NULL; | |
ee518936 NIS |
300 | } |
301 | ||
15eb3045 | 302 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
0c4f7ff0 NIS |
303 | XS(XS_PerlIO__Layer__find) |
304 | { | |
14a5cf38 JH |
305 | dXSARGS; |
306 | if (items < 2) | |
1604cfb0 | 307 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); |
14a5cf38 | 308 | else { |
1604cfb0 MS |
309 | const char * const name = SvPV_nolen_const(ST(1)); |
310 | ST(0) = (strEQ(name, "crlf") | |
311 | || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; | |
312 | XSRETURN(1); | |
14a5cf38 | 313 | } |
0c4f7ff0 NIS |
314 | } |
315 | ||
316 | ||
317 | void | |
318 | Perl_boot_core_PerlIO(pTHX) | |
319 | { | |
14a5cf38 | 320 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
0c4f7ff0 NIS |
321 | } |
322 | ||
ac27b0f5 NIS |
323 | #endif |
324 | ||
32e30700 | 325 | |
6f9d8c32 | 326 | /*======================================================================================*/ |
14a5cf38 | 327 | /* |
71200d45 | 328 | * Implement all the PerlIO interface ourselves. |
9e353e3b | 329 | */ |
760ac839 | 330 | |
76ced9ad NIS |
331 | #include "perliol.h" |
332 | ||
6f9d8c32 | 333 | void |
14a5cf38 JH |
334 | PerlIO_debug(const char *fmt, ...) |
335 | { | |
14a5cf38 JH |
336 | va_list ap; |
337 | dSYS; | |
e17bc05a TC |
338 | |
339 | if (!DEBUG_i_TEST) | |
340 | return; | |
341 | ||
d732c5e5 JH |
342 | va_start(ap, fmt); |
343 | ||
582588d2 | 344 | if (!PL_perlio_debug_fd) { |
1604cfb0 MS |
345 | if (!TAINTING_get && |
346 | PerlProc_getuid() == PerlProc_geteuid() && | |
347 | PerlProc_getgid() == PerlProc_getegid()) { | |
348 | const char * const s = PerlEnv_getenv("PERLIO_DEBUG"); | |
349 | if (s && *s) | |
350 | PL_perlio_debug_fd = PerlLIO_open3_cloexec(s, | |
351 | O_WRONLY | O_CREAT | O_APPEND, 0666); | |
352 | else | |
353 | PL_perlio_debug_fd = PerlLIO_dup_cloexec(2); /* stderr */ | |
354 | } else { | |
355 | /* tainting or set*id, so ignore the environment and send the | |
64320867 | 356 | debug output to stderr, like other -D switches. */ |
1604cfb0 MS |
357 | PL_perlio_debug_fd = PerlLIO_dup_cloexec(2); /* stderr */ |
358 | } | |
14a5cf38 | 359 | } |
27da23d5 | 360 | if (PL_perlio_debug_fd > 0) { |
70ace5da | 361 | #ifdef USE_ITHREADS |
1604cfb0 MS |
362 | const char * const s = CopFILE(PL_curcop); |
363 | /* Use fixed buffer as sv_catpvf etc. needs SVs */ | |
364 | char buffer[1024]; | |
1932805f | 365 | const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" LINE_Tf " ", s ? s : "(none)", CopLINE(PL_curcop)); |
048eef38 TC |
366 | # ifdef USE_QUADMATH |
367 | # ifdef HAS_VSNPRINTF | |
368 | /* my_vsnprintf() isn't available with quadmath, but the native vsnprintf() | |
369 | should be, otherwise the system isn't likely to support quadmath. | |
370 | Nothing should be calling PerlIO_debug() with floating point anyway. | |
371 | */ | |
a683fa5b KW |
372 | DECLARATION_FOR_LC_NUMERIC_MANIPULATION; |
373 | STORE_LC_NUMERIC_SET_TO_NEEDED(); | |
048eef38 | 374 | const STRLEN len2 = vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); |
a683fa5b | 375 | RESTORE_LC_NUMERIC(); |
048eef38 TC |
376 | # else |
377 | STATIC_ASSERT_STMT(0); | |
378 | # endif | |
379 | # else | |
1604cfb0 | 380 | const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap); |
048eef38 | 381 | # endif |
1604cfb0 | 382 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2)); |
70ace5da | 383 | #else |
1604cfb0 MS |
384 | const char *s = CopFILE(PL_curcop); |
385 | STRLEN len; | |
1932805f TK |
386 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%" LINE_Tf " ", |
387 | s ? s : "(none)", CopLINE(PL_curcop)); | |
1604cfb0 MS |
388 | Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); |
389 | ||
390 | s = SvPV_const(sv, len); | |
391 | PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, s, len)); | |
392 | SvREFCNT_dec(sv); | |
70ace5da | 393 | #endif |
14a5cf38 JH |
394 | } |
395 | va_end(ap); | |
6f9d8c32 NIS |
396 | } |
397 | ||
9e353e3b NIS |
398 | /*--------------------------------------------------------------------------------------*/ |
399 | ||
14a5cf38 | 400 | /* |
71200d45 | 401 | * Inner level routines |
14a5cf38 | 402 | */ |
9e353e3b | 403 | |
16865ff7 DM |
404 | /* check that the head field of each layer points back to the head */ |
405 | ||
406 | #ifdef DEBUGGING | |
407 | # define VERIFY_HEAD(f) PerlIO_verify_head(aTHX_ f) | |
408 | static void | |
409 | PerlIO_verify_head(pTHX_ PerlIO *f) | |
410 | { | |
411 | PerlIOl *head, *p; | |
412 | int seen = 0; | |
d0e4ea4d | 413 | # ifndef PERL_IMPLICIT_SYS |
dd791c72 | 414 | PERL_UNUSED_CONTEXT; |
d0e4ea4d | 415 | # endif |
16865ff7 | 416 | if (!PerlIOValid(f)) |
1604cfb0 | 417 | return; |
16865ff7 DM |
418 | p = head = PerlIOBase(f)->head; |
419 | assert(p); | |
420 | do { | |
1604cfb0 | 421 | assert(p->head == head); |
3ae398fb | 422 | if (&p->next == f) |
1604cfb0 MS |
423 | seen = 1; |
424 | p = p->next; | |
16865ff7 DM |
425 | } while (p); |
426 | assert(seen); | |
427 | } | |
428 | #else | |
429 | # define VERIFY_HEAD(f) | |
430 | #endif | |
431 | ||
432 | ||
14a5cf38 | 433 | /* |
71200d45 | 434 | * Table of pointers to the PerlIO structs (malloc'ed) |
14a5cf38 | 435 | */ |
05d1247b | 436 | #define PERLIO_TABLE_SIZE 64 |
6f9d8c32 | 437 | |
8995e67d DM |
438 | static void |
439 | PerlIO_init_table(pTHX) | |
440 | { | |
441 | if (PL_perlio) | |
1604cfb0 | 442 | return; |
8995e67d DM |
443 | Newxz(PL_perlio, PERLIO_TABLE_SIZE, PerlIOl); |
444 | } | |
445 | ||
446 | ||
447 | ||
760ac839 | 448 | PerlIO * |
5f1a76d0 | 449 | PerlIO_allocate(pTHX) |
6f9d8c32 | 450 | { |
14a5cf38 | 451 | /* |
3ae398fb | 452 | * Find a free slot in the table, allocating new tables as necessary |
14a5cf38 | 453 | */ |
303f2dc3 DM |
454 | PerlIOl **last; |
455 | PerlIOl *f; | |
a1ea730d | 456 | last = &PL_perlio; |
14a5cf38 | 457 | while ((f = *last)) { |
1604cfb0 | 458 | int i; |
3ae398fb | 459 | last = &f->next; |
1604cfb0 MS |
460 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
461 | if (!((++f)->next)) { | |
462 | goto good_exit; | |
463 | } | |
464 | } | |
14a5cf38 | 465 | } |
303f2dc3 | 466 | Newxz(f,PERLIO_TABLE_SIZE,PerlIOl); |
14a5cf38 | 467 | if (!f) { |
1604cfb0 | 468 | return NULL; |
14a5cf38 | 469 | } |
3ae398fb | 470 | *last = f++; |
4e0ef342 DD |
471 | |
472 | good_exit: | |
abf9167d | 473 | f->flags = 0; /* lockcnt */ |
303f2dc3 | 474 | f->tab = NULL; |
16865ff7 | 475 | f->head = f; |
3ae398fb | 476 | return &f->next; |
05d1247b NIS |
477 | } |
478 | ||
a1ea730d NIS |
479 | #undef PerlIO_fdupopen |
480 | PerlIO * | |
ecdeb87c | 481 | PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
a1ea730d | 482 | { |
04892f78 | 483 | if (PerlIOValid(f)) { |
1604cfb0 MS |
484 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
485 | DEBUG_i( PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param) ); | |
486 | if (tab && tab->Dup) | |
487 | return (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
488 | else { | |
489 | return PerlIOBase_dup(aTHX_ PerlIO_allocate(aTHX), f, param, flags); | |
490 | } | |
a1ea730d | 491 | } |
210e727c | 492 | else |
1604cfb0 | 493 | SETERRNO(EBADF, SS_IVCHAN); |
210e727c JH |
494 | |
495 | return NULL; | |
a1ea730d NIS |
496 | } |
497 | ||
498 | void | |
303f2dc3 | 499 | PerlIO_cleantable(pTHX_ PerlIOl **tablep) |
05d1247b | 500 | { |
303f2dc3 | 501 | PerlIOl * const table = *tablep; |
14a5cf38 | 502 | if (table) { |
1604cfb0 | 503 | int i; |
3ae398fb | 504 | PerlIO_cleantable(aTHX_ &table[0].next); |
1604cfb0 MS |
505 | for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { |
506 | PerlIOl * const f = table + i; | |
507 | if (f->next) { | |
508 | PerlIO_close(&(f->next)); | |
509 | } | |
510 | } | |
511 | Safefree(table); | |
512 | *tablep = NULL; | |
05d1247b | 513 | } |
05d1247b NIS |
514 | } |
515 | ||
fcf2db38 NIS |
516 | |
517 | PerlIO_list_t * | |
3a1ee7e8 | 518 | PerlIO_list_alloc(pTHX) |
fcf2db38 | 519 | { |
14a5cf38 | 520 | PerlIO_list_t *list; |
96a5add6 | 521 | PERL_UNUSED_CONTEXT; |
a02a5408 | 522 | Newxz(list, 1, PerlIO_list_t); |
14a5cf38 JH |
523 | list->refcnt = 1; |
524 | return list; | |
fcf2db38 NIS |
525 | } |
526 | ||
527 | void | |
3a1ee7e8 | 528 | PerlIO_list_free(pTHX_ PerlIO_list_t *list) |
fcf2db38 | 529 | { |
14a5cf38 | 530 | if (list) { |
1604cfb0 MS |
531 | if (--list->refcnt == 0) { |
532 | if (list->array) { | |
533 | IV i; | |
534 | for (i = 0; i < list->cur; i++) | |
535 | SvREFCNT_dec(list->array[i].arg); | |
536 | Safefree(list->array); | |
537 | } | |
538 | Safefree(list); | |
539 | } | |
14a5cf38 | 540 | } |
fcf2db38 NIS |
541 | } |
542 | ||
543 | void | |
3a1ee7e8 | 544 | PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) |
14a5cf38 | 545 | { |
334e202e | 546 | PerlIO_pair_t *p; |
b37c2d43 AL |
547 | PERL_UNUSED_CONTEXT; |
548 | ||
14a5cf38 | 549 | if (list->cur >= list->len) { |
00195859 | 550 | const IV new_len = list->len + 8; |
1604cfb0 MS |
551 | if (list->array) |
552 | Renew(list->array, new_len, PerlIO_pair_t); | |
553 | else | |
554 | Newx(list->array, new_len, PerlIO_pair_t); | |
555 | list->len = new_len; | |
14a5cf38 JH |
556 | } |
557 | p = &(list->array[list->cur++]); | |
558 | p->funcs = funcs; | |
559 | if ((p->arg = arg)) { | |
1604cfb0 | 560 | SvREFCNT_inc_simple_void_NN(arg); |
14a5cf38 | 561 | } |
fcf2db38 NIS |
562 | } |
563 | ||
3a1ee7e8 NIS |
564 | PerlIO_list_t * |
565 | PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) | |
566 | { | |
b37c2d43 | 567 | PerlIO_list_t *list = NULL; |
694c95cf | 568 | if (proto) { |
1604cfb0 MS |
569 | int i; |
570 | list = PerlIO_list_alloc(aTHX); | |
571 | for (i=0; i < proto->cur; i++) { | |
572 | SV *arg = proto->array[i].arg; | |
24d147a6 | 573 | #ifdef USE_ITHREADS |
1604cfb0 MS |
574 | if (arg && param) |
575 | arg = sv_dup(arg, param); | |
a951d81d | 576 | #else |
1604cfb0 | 577 | PERL_UNUSED_ARG(param); |
a951d81d | 578 | #endif |
1604cfb0 MS |
579 | PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); |
580 | } | |
3a1ee7e8 NIS |
581 | } |
582 | return list; | |
583 | } | |
4a4a6116 | 584 | |
05d1247b | 585 | void |
3a1ee7e8 | 586 | PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) |
9a6404c5 | 587 | { |
3aaf42a7 | 588 | #ifdef USE_ITHREADS |
303f2dc3 DM |
589 | PerlIOl **table = &proto->Iperlio; |
590 | PerlIOl *f; | |
3a1ee7e8 NIS |
591 | PL_perlio = NULL; |
592 | PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); | |
593 | PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); | |
8995e67d | 594 | PerlIO_init_table(aTHX); |
e17bc05a | 595 | DEBUG_i( PerlIO_debug("Clone %p from %p\n",(void*)aTHX,(void*)proto) ); |
3a1ee7e8 | 596 | while ((f = *table)) { |
1604cfb0 | 597 | int i; |
3ae398fb LM |
598 | table = &f->next; |
599 | f++; | |
1604cfb0 MS |
600 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
601 | if (f->next) { | |
602 | (void) fp_dup(&(f->next), 0, param); | |
603 | } | |
604 | f++; | |
605 | } | |
606 | } | |
1b6737cc | 607 | #else |
a25429c6 | 608 | PERL_UNUSED_CONTEXT; |
1b6737cc AL |
609 | PERL_UNUSED_ARG(proto); |
610 | PERL_UNUSED_ARG(param); | |
3aaf42a7 | 611 | #endif |
9a6404c5 DM |
612 | } |
613 | ||
614 | void | |
13621cfb NIS |
615 | PerlIO_destruct(pTHX) |
616 | { | |
303f2dc3 DM |
617 | PerlIOl **table = &PL_perlio; |
618 | PerlIOl *f; | |
694c95cf | 619 | #ifdef USE_ITHREADS |
e17bc05a | 620 | DEBUG_i( PerlIO_debug("Destruct %p\n",(void*)aTHX) ); |
694c95cf | 621 | #endif |
14a5cf38 | 622 | while ((f = *table)) { |
1604cfb0 | 623 | int i; |
3ae398fb LM |
624 | table = &f->next; |
625 | f++; | |
1604cfb0 MS |
626 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
627 | PerlIO *x = &(f->next); | |
628 | const PerlIOl *l; | |
629 | while ((l = *x)) { | |
630 | if (l->tab && l->tab->kind & PERLIO_K_DESTRUCT) { | |
631 | DEBUG_i( PerlIO_debug("Destruct popping %s\n", l->tab->name) ); | |
632 | PerlIO_flush(x); | |
633 | PerlIO_pop(aTHX_ x); | |
634 | } | |
635 | else { | |
636 | x = PerlIONext(x); | |
637 | } | |
638 | } | |
639 | f++; | |
640 | } | |
14a5cf38 | 641 | } |
13621cfb NIS |
642 | } |
643 | ||
644 | void | |
a999f61b | 645 | PerlIO_pop(pTHX_ PerlIO *f) |
760ac839 | 646 | { |
dcda55fc | 647 | const PerlIOl *l = *f; |
16865ff7 | 648 | VERIFY_HEAD(f); |
14a5cf38 | 649 | if (l) { |
1604cfb0 | 650 | DEBUG_i( PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, |
e17bc05a | 651 | l->tab ? l->tab->name : "(Null)") ); |
1604cfb0 MS |
652 | if (l->tab && l->tab->Popped) { |
653 | /* | |
654 | * If popped returns non-zero do not free its layer structure | |
655 | * it has either done so itself, or it is shared and still in | |
656 | * use | |
657 | */ | |
658 | if ((*l->tab->Popped) (aTHX_ f) != 0) | |
659 | return; | |
660 | } | |
661 | if (PerlIO_lockcnt(f)) { | |
662 | /* we're in use; defer freeing the structure */ | |
663 | PerlIOBase(f)->flags = PERLIO_F_CLEARED; | |
664 | PerlIOBase(f)->tab = NULL; | |
665 | } | |
666 | else { | |
667 | *f = l->next; | |
668 | Safefree(l); | |
669 | } | |
abf9167d | 670 | |
a8c08ecd | 671 | } |
6f9d8c32 NIS |
672 | } |
673 | ||
39f7a870 JH |
674 | /* Return as an array the stack of layers on a filehandle. Note that |
675 | * the stack is returned top-first in the array, and there are three | |
676 | * times as many array elements as there are layers in the stack: the | |
677 | * first element of a layer triplet is the name, the second one is the | |
678 | * arguments, and the third one is the flags. */ | |
679 | ||
680 | AV * | |
681 | PerlIO_get_layers(pTHX_ PerlIO *f) | |
682 | { | |
dcda55fc | 683 | AV * const av = newAV(); |
39f7a870 | 684 | |
dcda55fc | 685 | if (PerlIOValid(f)) { |
1604cfb0 MS |
686 | PerlIOl *l = PerlIOBase(f); |
687 | ||
688 | while (l) { | |
689 | /* There is some collusion in the implementation of | |
690 | XS_PerlIO_get_layers - it knows that name and flags are | |
691 | generated as fresh SVs here, and takes advantage of that to | |
692 | "copy" them by taking a reference. If it changes here, it needs | |
693 | to change there too. */ | |
694 | SV * const name = l->tab && l->tab->name ? | |
695 | newSVpv(l->tab->name, 0) : &PL_sv_undef; | |
696 | SV * const arg = l->tab && l->tab->Getarg ? | |
697 | (*l->tab->Getarg)(aTHX_ &l, 0, 0) : &PL_sv_undef; | |
74279cb6 RL |
698 | av_push_simple(av, name); |
699 | av_push_simple(av, arg); | |
700 | av_push_simple(av, newSViv((IV)l->flags)); | |
1604cfb0 MS |
701 | l = l->next; |
702 | } | |
dcda55fc | 703 | } |
39f7a870 | 704 | |
dcda55fc | 705 | return av; |
39f7a870 JH |
706 | } |
707 | ||
9e353e3b | 708 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 709 | /* |
71200d45 | 710 | * XS Interface for perl code |
14a5cf38 | 711 | */ |
9e353e3b | 712 | |
fcf2db38 | 713 | PerlIO_funcs * |
2edd7e44 | 714 | PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) |
f3862f8b | 715 | { |
20b7effb | 716 | |
14a5cf38 JH |
717 | IV i; |
718 | if ((SSize_t) len <= 0) | |
1604cfb0 | 719 | len = strlen(name); |
3a1ee7e8 | 720 | for (i = 0; i < PL_known_layers->cur; i++) { |
1604cfb0 | 721 | PerlIO_funcs * const f = PL_known_layers->array[i].funcs; |
ba90859e NC |
722 | const STRLEN this_len = strlen(f->name); |
723 | if (this_len == len && memEQ(f->name, name, len)) { | |
1604cfb0 MS |
724 | DEBUG_i( PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f) ); |
725 | return f; | |
726 | } | |
14a5cf38 | 727 | } |
3a1ee7e8 | 728 | if (load && PL_subname && PL_def_layerlist |
1604cfb0 MS |
729 | && PL_def_layerlist->cur >= 2) { |
730 | if (PL_in_load_module) { | |
731 | Perl_croak(aTHX_ "Recursive call to Perl_load_module in PerlIO_find_layer"); | |
732 | return NULL; | |
733 | } else { | |
734 | SV * const pkgsv = newSVpvs("PerlIO"); | |
735 | SV * const layer = newSVpvn(name, len); | |
736 | CV * const cv = get_cvs("PerlIO::Layer::NoWarnings", 0); | |
737 | ENTER; | |
738 | SAVEBOOL(PL_in_load_module); | |
739 | if (cv) { | |
740 | SAVEGENERICSV(PL_warnhook); | |
741 | PL_warnhook = MUTABLE_SV((SvREFCNT_inc_simple_NN(cv))); | |
742 | } | |
743 | PL_in_load_module = TRUE; | |
744 | /* | |
745 | * The two SVs are magically freed by load_module | |
746 | */ | |
747 | Perl_load_module(aTHX_ 0, pkgsv, NULL, layer, NULL); | |
748 | LEAVE; | |
749 | return PerlIO_find_layer(aTHX_ name, len, 0); | |
750 | } | |
14a5cf38 | 751 | } |
e17bc05a | 752 | DEBUG_i( PerlIO_debug("Cannot find %.*s\n", (int) len, name) ); |
14a5cf38 | 753 | return NULL; |
f3862f8b NIS |
754 | } |
755 | ||
2a1bc955 | 756 | #ifdef USE_ATTRIBUTES_FOR_PERLIO |
b13b2135 NIS |
757 | |
758 | static int | |
759 | perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) | |
760 | { | |
14a5cf38 | 761 | if (SvROK(sv)) { |
1604cfb0 MS |
762 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
763 | PerlIO * const ifp = IoIFP(io); | |
764 | PerlIO * const ofp = IoOFP(io); | |
765 | Perl_warn(aTHX_ "set %" SVf " %p %p %p", | |
766 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
767 | } |
768 | return 0; | |
b13b2135 NIS |
769 | } |
770 | ||
771 | static int | |
772 | perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) | |
773 | { | |
14a5cf38 | 774 | if (SvROK(sv)) { |
1604cfb0 MS |
775 | IO * const io = GvIOn(MUTABLE_GV(SvRV(sv))); |
776 | PerlIO * const ifp = IoIFP(io); | |
777 | PerlIO * const ofp = IoOFP(io); | |
778 | Perl_warn(aTHX_ "get %" SVf " %p %p %p", | |
779 | SVfARG(sv), (void*)io, (void*)ifp, (void*)ofp); | |
14a5cf38 JH |
780 | } |
781 | return 0; | |
b13b2135 NIS |
782 | } |
783 | ||
784 | static int | |
785 | perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) | |
786 | { | |
be2597df | 787 | Perl_warn(aTHX_ "clear %" SVf, SVfARG(sv)); |
14a5cf38 | 788 | return 0; |
b13b2135 NIS |
789 | } |
790 | ||
791 | static int | |
792 | perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) | |
793 | { | |
be2597df | 794 | Perl_warn(aTHX_ "free %" SVf, SVfARG(sv)); |
14a5cf38 | 795 | return 0; |
b13b2135 NIS |
796 | } |
797 | ||
798 | MGVTBL perlio_vtab = { | |
14a5cf38 JH |
799 | perlio_mg_get, |
800 | perlio_mg_set, | |
22569500 | 801 | NULL, /* len */ |
14a5cf38 JH |
802 | perlio_mg_clear, |
803 | perlio_mg_free | |
b13b2135 NIS |
804 | }; |
805 | ||
15eb3045 | 806 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES); /* prototype to pass -Wmissing-prototypes */ |
b13b2135 NIS |
807 | XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) |
808 | { | |
14a5cf38 | 809 | dXSARGS; |
dcda55fc AL |
810 | SV * const sv = SvRV(ST(1)); |
811 | AV * const av = newAV(); | |
14a5cf38 JH |
812 | MAGIC *mg; |
813 | int count = 0; | |
814 | int i; | |
ad64d0ec | 815 | sv_magic(sv, MUTABLE_SV(av), PERL_MAGIC_ext, NULL, 0); |
14a5cf38 JH |
816 | SvRMAGICAL_off(sv); |
817 | mg = mg_find(sv, PERL_MAGIC_ext); | |
818 | mg->mg_virtual = &perlio_vtab; | |
819 | mg_magical(sv); | |
be2597df | 820 | Perl_warn(aTHX_ "attrib %" SVf, SVfARG(sv)); |
14a5cf38 | 821 | for (i = 2; i < items; i++) { |
1604cfb0 MS |
822 | STRLEN len; |
823 | const char * const name = SvPV_const(ST(i), len); | |
824 | SV * const layer = PerlIO_find_layer(aTHX_ name, len, 1); | |
825 | if (layer) { | |
74279cb6 | 826 | av_push_simple(av, SvREFCNT_inc_simple_NN(layer)); |
1604cfb0 MS |
827 | } |
828 | else { | |
829 | ST(count) = ST(i); | |
830 | count++; | |
831 | } | |
14a5cf38 JH |
832 | } |
833 | SvREFCNT_dec(av); | |
834 | XSRETURN(count); | |
835 | } | |
836 | ||
b8fda935 | 837 | #endif /* USE_ATTRIBUTES_FOR_PERLIO */ |
2a1bc955 | 838 | |
e3f3bf95 NIS |
839 | SV * |
840 | PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) | |
f3862f8b | 841 | { |
da51bb9b | 842 | HV * const stash = gv_stashpvs("PerlIO::Layer", GV_ADD); |
46c461b5 | 843 | SV * const sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); |
14a5cf38 | 844 | return sv; |
e3f3bf95 NIS |
845 | } |
846 | ||
15eb3045 | 847 | XS(XS_PerlIO__Layer__NoWarnings); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 848 | XS(XS_PerlIO__Layer__NoWarnings) |
c9bca74a | 849 | { |
486ec47a | 850 | /* This is used as a %SIG{__WARN__} handler to suppress warnings |
c9bca74a NIS |
851 | during loading of layers. |
852 | */ | |
853 | dXSARGS; | |
5347602a | 854 | PERL_UNUSED_VAR(items); |
e17bc05a TC |
855 | DEBUG_i( |
856 | if (items) | |
857 | PerlIO_debug("warning:%s\n",SvPV_nolen_const(ST(0))) ); | |
c9bca74a NIS |
858 | XSRETURN(0); |
859 | } | |
860 | ||
15eb3045 | 861 | XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */ |
5ca1d77f | 862 | XS(XS_PerlIO__Layer__find) |
0c4f7ff0 | 863 | { |
14a5cf38 JH |
864 | dXSARGS; |
865 | if (items < 2) | |
1604cfb0 | 866 | Perl_croak(aTHX_ "Usage class->find(name[,load])"); |
14a5cf38 | 867 | else { |
1604cfb0 MS |
868 | STRLEN len; |
869 | const char * const name = SvPV_const(ST(1), len); | |
870 | const bool load = (items > 2) ? SvTRUE_NN(ST(2)) : 0; | |
871 | PerlIO_funcs * const layer = PerlIO_find_layer(aTHX_ name, len, load); | |
872 | ST(0) = | |
873 | (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : | |
874 | &PL_sv_undef; | |
875 | XSRETURN(1); | |
14a5cf38 | 876 | } |
0c4f7ff0 NIS |
877 | } |
878 | ||
e3f3bf95 NIS |
879 | void |
880 | PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) | |
881 | { | |
3a1ee7e8 | 882 | if (!PL_known_layers) |
1604cfb0 | 883 | PL_known_layers = PerlIO_list_alloc(aTHX); |
a0714e2c | 884 | PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL); |
e17bc05a | 885 | DEBUG_i( PerlIO_debug("define %s %p\n", tab->name, (void*)tab) ); |
f3862f8b NIS |
886 | } |
887 | ||
1141d9f8 | 888 | int |
fcf2db38 | 889 | PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) |
1141d9f8 | 890 | { |
14a5cf38 | 891 | if (names) { |
1604cfb0 MS |
892 | const char *s = names; |
893 | while (*s) { | |
894 | while (isSPACE(*s) || *s == ':') | |
895 | s++; | |
896 | if (*s) { | |
897 | STRLEN llen = 0; | |
898 | const char *e = s; | |
899 | const char *as = NULL; | |
900 | STRLEN alen = 0; | |
901 | if (!isIDFIRST(*s)) { | |
902 | /* | |
903 | * Message is consistent with how attribute lists are | |
904 | * passed. Even though this means "foo : : bar" is | |
905 | * seen as an invalid separator character. | |
906 | */ | |
907 | const char q = ((*s == '\'') ? '"' : '\''); | |
908 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), | |
909 | "Invalid separator character %c%c%c in PerlIO layer specification %s", | |
910 | q, *s, q, s); | |
911 | SETERRNO(EINVAL, LIB_INVARG); | |
912 | return -1; | |
913 | } | |
914 | do { | |
915 | e++; | |
916 | } while (isWORDCHAR(*e)); | |
917 | llen = e - s; | |
918 | if (*e == '(') { | |
919 | int nesting = 1; | |
920 | as = ++e; | |
921 | while (nesting) { | |
922 | switch (*e++) { | |
923 | case ')': | |
924 | if (--nesting == 0) | |
925 | alen = (e - 1) - as; | |
926 | break; | |
927 | case '(': | |
928 | ++nesting; | |
929 | break; | |
930 | case '\\': | |
931 | /* | |
932 | * It's a nul terminated string, not allowed | |
933 | * to \ the terminating null. Anything other | |
934 | * character is passed over. | |
935 | */ | |
936 | if (*e++) { | |
937 | break; | |
938 | } | |
2165bd23 | 939 | /* Fall through */ |
1604cfb0 MS |
940 | case '\0': |
941 | e--; | |
942 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), | |
943 | "Argument list not closed for PerlIO layer \"%.*s\"", | |
944 | (int) (e - s), s); | |
945 | return -1; | |
946 | default: | |
947 | /* | |
948 | * boring. | |
949 | */ | |
950 | break; | |
951 | } | |
952 | } | |
953 | } | |
954 | if (e > s) { | |
955 | PerlIO_funcs * const layer = | |
956 | PerlIO_find_layer(aTHX_ s, llen, 1); | |
957 | if (layer) { | |
958 | SV *arg = NULL; | |
959 | if (as) | |
960 | arg = newSVpvn(as, alen); | |
961 | PerlIO_list_push(aTHX_ av, layer, | |
962 | (arg) ? arg : &PL_sv_undef); | |
963 | SvREFCNT_dec(arg); | |
964 | } | |
965 | else { | |
966 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"%.*s\"", | |
967 | (int) llen, s); | |
968 | return -1; | |
969 | } | |
970 | } | |
971 | s = e; | |
972 | } | |
973 | } | |
14a5cf38 JH |
974 | } |
975 | return 0; | |
1141d9f8 NIS |
976 | } |
977 | ||
dfebf958 | 978 | void |
fcf2db38 | 979 | PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) |
dfebf958 | 980 | { |
27da23d5 | 981 | PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio; |
35990314 | 982 | #ifdef PERLIO_USING_CRLF |
6ce75a77 | 983 | tab = &PerlIO_crlf; |
846be114 | 984 | #else |
6ce75a77 | 985 | if (PerlIO_stdio.Set_ptrcnt) |
1604cfb0 | 986 | tab = &PerlIO_stdio; |
846be114 | 987 | #endif |
e17bc05a | 988 | DEBUG_i( PerlIO_debug("Pushing %s\n", tab->name) ); |
0987d6f3 | 989 | PerlIO_list_push(aTHX_ av, (PerlIO_funcs *)tab, &PL_sv_undef); |
dfebf958 NIS |
990 | } |
991 | ||
e3f3bf95 | 992 | SV * |
14a5cf38 | 993 | PerlIO_arg_fetch(PerlIO_list_t *av, IV n) |
e3f3bf95 | 994 | { |
14a5cf38 | 995 | return av->array[n].arg; |
e3f3bf95 NIS |
996 | } |
997 | ||
f3862f8b | 998 | PerlIO_funcs * |
14a5cf38 | 999 | PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) |
f3862f8b | 1000 | { |
14a5cf38 | 1001 | if (n >= 0 && n < av->cur) { |
1604cfb0 | 1002 | DEBUG_i( PerlIO_debug("Layer %" IVdf " is %s\n", n, |
e17bc05a | 1003 | av->array[n].funcs->name) ); |
1604cfb0 | 1004 | return av->array[n].funcs; |
14a5cf38 JH |
1005 | } |
1006 | if (!def) | |
1604cfb0 | 1007 | Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); |
14a5cf38 | 1008 | return def; |
e3f3bf95 NIS |
1009 | } |
1010 | ||
4ec2216f NIS |
1011 | IV |
1012 | PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
1013 | { | |
8772537c AL |
1014 | PERL_UNUSED_ARG(mode); |
1015 | PERL_UNUSED_ARG(arg); | |
1016 | PERL_UNUSED_ARG(tab); | |
4ec2216f | 1017 | if (PerlIOValid(f)) { |
1604cfb0 MS |
1018 | PerlIO_flush(f); |
1019 | PerlIO_pop(aTHX_ f); | |
1020 | return 0; | |
4ec2216f NIS |
1021 | } |
1022 | return -1; | |
1023 | } | |
1024 | ||
27da23d5 | 1025 | PERLIO_FUNCS_DECL(PerlIO_remove) = { |
4ec2216f NIS |
1026 | sizeof(PerlIO_funcs), |
1027 | "pop", | |
1028 | 0, | |
1029 | PERLIO_K_DUMMY | PERLIO_K_UTF8, | |
1030 | PerlIOPop_pushed, | |
1031 | NULL, | |
c0888ace | 1032 | PerlIOBase_open, |
4ec2216f NIS |
1033 | NULL, |
1034 | NULL, | |
1035 | NULL, | |
1036 | NULL, | |
1037 | NULL, | |
1038 | NULL, | |
1039 | NULL, | |
1040 | NULL, | |
de009b76 AL |
1041 | NULL, |
1042 | NULL, | |
4ec2216f NIS |
1043 | NULL, /* flush */ |
1044 | NULL, /* fill */ | |
1045 | NULL, | |
1046 | NULL, | |
1047 | NULL, | |
1048 | NULL, | |
1049 | NULL, /* get_base */ | |
1050 | NULL, /* get_bufsiz */ | |
1051 | NULL, /* get_ptr */ | |
1052 | NULL, /* get_cnt */ | |
1053 | NULL, /* set_ptrcnt */ | |
1054 | }; | |
1055 | ||
fcf2db38 | 1056 | PerlIO_list_t * |
e3f3bf95 NIS |
1057 | PerlIO_default_layers(pTHX) |
1058 | { | |
3a1ee7e8 | 1059 | if (!PL_def_layerlist) { |
1604cfb0 MS |
1060 | const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO"); |
1061 | PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix; | |
1062 | PL_def_layerlist = PerlIO_list_alloc(aTHX); | |
1063 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_unix)); | |
1604cfb0 MS |
1064 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_raw)); |
1065 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_perlio)); | |
1066 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_stdio)); | |
1067 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_crlf)); | |
1068 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_utf8)); | |
1069 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_remove)); | |
1070 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_byte)); | |
1071 | PerlIO_list_push(aTHX_ PL_def_layerlist, (PerlIO_funcs *)osLayer, | |
0987d6f3 | 1072 | &PL_sv_undef); |
1604cfb0 MS |
1073 | if (s) { |
1074 | PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); | |
1075 | } | |
1076 | else { | |
1077 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); | |
1078 | } | |
1141d9f8 | 1079 | } |
3a1ee7e8 | 1080 | if (PL_def_layerlist->cur < 2) { |
1604cfb0 | 1081 | PerlIO_default_buffer(aTHX_ PL_def_layerlist); |
f3862f8b | 1082 | } |
3a1ee7e8 | 1083 | return PL_def_layerlist; |
e3f3bf95 NIS |
1084 | } |
1085 | ||
0c4f7ff0 NIS |
1086 | void |
1087 | Perl_boot_core_PerlIO(pTHX) | |
1088 | { | |
1089 | #ifdef USE_ATTRIBUTES_FOR_PERLIO | |
14a5cf38 | 1090 | newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, |
1604cfb0 | 1091 | __FILE__); |
0c4f7ff0 | 1092 | #endif |
14a5cf38 | 1093 | newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); |
c9bca74a | 1094 | newXS("PerlIO::Layer::NoWarnings", XS_PerlIO__Layer__NoWarnings, __FILE__); |
0c4f7ff0 | 1095 | } |
e3f3bf95 NIS |
1096 | |
1097 | PerlIO_funcs * | |
1098 | PerlIO_default_layer(pTHX_ I32 n) | |
1099 | { | |
46c461b5 | 1100 | PerlIO_list_t * const av = PerlIO_default_layers(aTHX); |
14a5cf38 | 1101 | if (n < 0) |
1604cfb0 | 1102 | n += av->cur; |
27da23d5 | 1103 | return PerlIO_layer_fetch(aTHX_ av, n, PERLIO_FUNCS_CAST(&PerlIO_stdio)); |
f3862f8b NIS |
1104 | } |
1105 | ||
a999f61b NIS |
1106 | #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) |
1107 | #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) | |
60382766 NIS |
1108 | |
1109 | void | |
1141d9f8 | 1110 | PerlIO_stdstreams(pTHX) |
60382766 | 1111 | { |
a1ea730d | 1112 | if (!PL_perlio) { |
1604cfb0 MS |
1113 | PerlIO_init_table(aTHX); |
1114 | PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); | |
1115 | PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); | |
1116 | PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); | |
14a5cf38 | 1117 | } |
60382766 NIS |
1118 | } |
1119 | ||
1120 | PerlIO * | |
27da23d5 | 1121 | PerlIO_push(pTHX_ PerlIO *f, PERLIO_FUNCS_DECL(*tab), const char *mode, SV *arg) |
14a5cf38 | 1122 | { |
16865ff7 | 1123 | VERIFY_HEAD(f); |
2dc2558e | 1124 | if (tab->fsize != sizeof(PerlIO_funcs)) { |
1604cfb0 MS |
1125 | Perl_croak( aTHX_ |
1126 | "%s (%" UVuf ") does not match %s (%" UVuf ")", | |
1127 | "PerlIO layer function table size", (UV)tab->fsize, | |
1128 | "size expected by this perl", (UV)sizeof(PerlIO_funcs) ); | |
2dc2558e NIS |
1129 | } |
1130 | if (tab->size) { | |
1604cfb0 MS |
1131 | PerlIOl *l; |
1132 | if (tab->size < sizeof(PerlIOl)) { | |
1133 | Perl_croak( aTHX_ | |
1134 | "%s (%" UVuf ") smaller than %s (%" UVuf ")", | |
1135 | "PerlIO layer instance size", (UV)tab->size, | |
1136 | "size expected by this perl", (UV)sizeof(PerlIOl) ); | |
1137 | } | |
1138 | /* Real layer with a data area */ | |
1139 | if (f) { | |
1140 | char *temp; | |
1141 | Newxz(temp, tab->size, char); | |
1142 | l = (PerlIOl*)temp; | |
1143 | if (l) { | |
1144 | l->next = *f; | |
1145 | l->tab = (PerlIO_funcs*) tab; | |
1146 | l->head = ((PerlIOl*)f)->head; | |
1147 | *f = l; | |
1148 | DEBUG_i( PerlIO_debug("PerlIO_push f=%p %s %s %p\n", | |
e17bc05a TC |
1149 | (void*)f, tab->name, |
1150 | (mode) ? mode : "(Null)", (void*)arg) ); | |
1604cfb0 MS |
1151 | if (*l->tab->Pushed && |
1152 | (*l->tab->Pushed) | |
1153 | (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1154 | PerlIO_pop(aTHX_ f); | |
1155 | return NULL; | |
1156 | } | |
1157 | } | |
1158 | else | |
1159 | return NULL; | |
1160 | } | |
2dc2558e NIS |
1161 | } |
1162 | else if (f) { | |
1604cfb0 MS |
1163 | /* Pseudo-layer where push does its own stack adjust */ |
1164 | DEBUG_i( PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, | |
e17bc05a | 1165 | (mode) ? mode : "(Null)", (void*)arg) ); |
1604cfb0 MS |
1166 | if (tab->Pushed && |
1167 | (*tab->Pushed) (aTHX_ f, mode, arg, (PerlIO_funcs*) tab) != 0) { | |
1168 | return NULL; | |
1169 | } | |
14a5cf38 JH |
1170 | } |
1171 | return f; | |
60382766 NIS |
1172 | } |
1173 | ||
81fe74fb LT |
1174 | PerlIO * |
1175 | PerlIOBase_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, | |
1604cfb0 MS |
1176 | IV n, const char *mode, int fd, int imode, int perm, |
1177 | PerlIO *old, int narg, SV **args) | |
81fe74fb LT |
1178 | { |
1179 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_layer(aTHX_ 0)); | |
1180 | if (tab && tab->Open) { | |
1604cfb0 MS |
1181 | PerlIO* ret = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, old, narg, args); |
1182 | if (ret && PerlIO_push(aTHX_ ret, self, mode, PerlIOArg) == NULL) { | |
1183 | PerlIO_close(ret); | |
1184 | return NULL; | |
1185 | } | |
1186 | return ret; | |
81fe74fb LT |
1187 | } |
1188 | SETERRNO(EINVAL, LIB_INVARG); | |
1189 | return NULL; | |
1190 | } | |
1191 | ||
dfebf958 | 1192 | IV |
86e05cf2 NIS |
1193 | PerlIOBase_binmode(pTHX_ PerlIO *f) |
1194 | { | |
1195 | if (PerlIOValid(f)) { | |
1604cfb0 MS |
1196 | /* Is layer suitable for raw stream ? */ |
1197 | if (PerlIOBase(f)->tab && PerlIOBase(f)->tab->kind & PERLIO_K_RAW) { | |
1198 | /* Yes - turn off UTF-8-ness, to undo UTF-8 locale effects */ | |
1199 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1200 | } | |
1201 | else { | |
1202 | /* Not suitable - pop it */ | |
1203 | PerlIO_pop(aTHX_ f); | |
1204 | } | |
1205 | return 0; | |
86e05cf2 NIS |
1206 | } |
1207 | return -1; | |
1208 | } | |
1209 | ||
1210 | IV | |
2dc2558e | 1211 | PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
dfebf958 | 1212 | { |
8772537c AL |
1213 | PERL_UNUSED_ARG(mode); |
1214 | PERL_UNUSED_ARG(arg); | |
1215 | PERL_UNUSED_ARG(tab); | |
86e05cf2 | 1216 | |
04892f78 | 1217 | if (PerlIOValid(f)) { |
1604cfb0 MS |
1218 | PerlIO *t; |
1219 | const PerlIOl *l; | |
1220 | PerlIO_flush(f); | |
1221 | /* | |
1222 | * Strip all layers that are not suitable for a raw stream | |
1223 | */ | |
1224 | t = f; | |
1225 | while (t && (l = *t)) { | |
1226 | if (l->tab && l->tab->Binmode) { | |
1227 | /* Has a handler - normal case */ | |
1228 | if ((*l->tab->Binmode)(aTHX_ t) == 0) { | |
1229 | if (*t == l) { | |
1230 | /* Layer still there - move down a layer */ | |
1231 | t = PerlIONext(t); | |
1232 | } | |
1233 | } | |
1234 | else { | |
1235 | return -1; | |
1236 | } | |
1237 | } | |
1238 | else { | |
1239 | /* No handler - pop it */ | |
1240 | PerlIO_pop(aTHX_ t); | |
1241 | } | |
1242 | } | |
1243 | if (PerlIOValid(f)) { | |
1244 | DEBUG_i( PerlIO_debug(":raw f=%p :%s\n", (void*)f, | |
e17bc05a | 1245 | PerlIOBase(f)->tab ? PerlIOBase(f)->tab->name : "(Null)") ); |
1604cfb0 MS |
1246 | return 0; |
1247 | } | |
14a5cf38 JH |
1248 | } |
1249 | return -1; | |
dfebf958 NIS |
1250 | } |
1251 | ||
ac27b0f5 | 1252 | int |
14a5cf38 | 1253 | PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, |
1604cfb0 | 1254 | PerlIO_list_t *layers, IV n, IV max) |
14a5cf38 | 1255 | { |
14a5cf38 JH |
1256 | int code = 0; |
1257 | while (n < max) { | |
1604cfb0 MS |
1258 | PerlIO_funcs * const tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); |
1259 | if (tab) { | |
1260 | if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { | |
1261 | code = -1; | |
1262 | break; | |
1263 | } | |
1264 | } | |
1265 | n++; | |
14a5cf38 JH |
1266 | } |
1267 | return code; | |
e3f3bf95 NIS |
1268 | } |
1269 | ||
1270 | int | |
ac27b0f5 NIS |
1271 | PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) |
1272 | { | |
14a5cf38 | 1273 | int code = 0; |
da0fccaa DG |
1274 | ENTER; |
1275 | save_scalar(PL_errgv); | |
53f1b6d2 | 1276 | if (f && names) { |
1604cfb0 MS |
1277 | PerlIO_list_t * const layers = PerlIO_list_alloc(aTHX); |
1278 | code = PerlIO_parse_layers(aTHX_ layers, names); | |
1279 | if (code == 0) { | |
1280 | code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); | |
1281 | } | |
1282 | PerlIO_list_free(aTHX_ layers); | |
ac27b0f5 | 1283 | } |
da0fccaa | 1284 | LEAVE; |
14a5cf38 | 1285 | return code; |
ac27b0f5 NIS |
1286 | } |
1287 | ||
f3862f8b | 1288 | |
60382766 | 1289 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1290 | /* |
71200d45 | 1291 | * Given the abstraction above the public API functions |
14a5cf38 | 1292 | */ |
60382766 NIS |
1293 | |
1294 | int | |
f5b9d040 | 1295 | PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) |
76ced9ad | 1296 | { |
5347602a DM |
1297 | PERL_UNUSED_ARG(iotype); |
1298 | PERL_UNUSED_ARG(mode); | |
1299 | ||
e17bc05a TC |
1300 | DEBUG_i( |
1301 | PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", (void*)f, | |
1302 | (PerlIOBase(f) && PerlIOBase(f)->tab) ? | |
1303 | PerlIOBase(f)->tab->name : "(Null)", | |
1304 | iotype, mode, (names) ? names : "(Null)") ); | |
68b5363f | 1305 | |
03c0554d | 1306 | if (names) { |
1604cfb0 MS |
1307 | /* Do not flush etc. if (e.g.) switching encodings. |
1308 | if a pushed layer knows it needs to flush lower layers | |
1309 | (for example :unix which is never going to call them) | |
1310 | it can do the flush when it is pushed. | |
1311 | */ | |
1312 | return cBOOL(PerlIO_apply_layers(aTHX_ f, NULL, names) == 0); | |
03c0554d NIS |
1313 | } |
1314 | else { | |
1604cfb0 | 1315 | /* Fake 5.6 legacy of using this call to turn ON O_TEXT */ |
35990314 | 1316 | #ifdef PERLIO_USING_CRLF |
1604cfb0 MS |
1317 | /* Legacy binmode only has meaning if O_TEXT has a value distinct from |
1318 | O_BINARY so we can look for it in mode. | |
1319 | */ | |
1320 | if (!(mode & O_BINARY)) { | |
1321 | /* Text mode */ | |
1322 | /* FIXME?: Looking down the layer stack seems wrong, | |
1323 | but is a way of reaching past (say) an encoding layer | |
1324 | to flip CRLF-ness of the layer(s) below | |
1325 | */ | |
1326 | while (*f) { | |
1327 | /* Perhaps we should turn on bottom-most aware layer | |
1328 | e.g. Ilya's idea that UNIX TTY could serve | |
1329 | */ | |
1330 | if (PerlIOBase(f)->tab && | |
1331 | PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) | |
1332 | { | |
1333 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
1334 | /* Not in text mode - flush any pending stuff and flip it */ | |
1335 | PerlIO_flush(f); | |
1336 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
1337 | } | |
1338 | /* Only need to turn it on in one layer so we are done */ | |
1339 | return TRUE; | |
1340 | } | |
1341 | f = PerlIONext(f); | |
1342 | } | |
1343 | /* Not finding a CRLF aware layer presumably means we are binary | |
1344 | which is not what was requested - so we failed | |
1345 | We _could_ push :crlf layer but so could caller | |
1346 | */ | |
1347 | return FALSE; | |
1348 | } | |
6ce75a77 | 1349 | #endif |
1604cfb0 MS |
1350 | /* Legacy binmode is now _defined_ as being equivalent to pushing :raw |
1351 | So code that used to be here is now in PerlIORaw_pushed(). | |
1352 | */ | |
1353 | return cBOOL(PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_raw), NULL, NULL)); | |
14a5cf38 | 1354 | } |
f5b9d040 NIS |
1355 | } |
1356 | ||
f5b9d040 | 1357 | int |
e87a358a | 1358 | PerlIO__close(pTHX_ PerlIO *f) |
f5b9d040 | 1359 | { |
37725cdc | 1360 | if (PerlIOValid(f)) { |
1604cfb0 MS |
1361 | PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1362 | if (tab && tab->Close) | |
1363 | return (*tab->Close)(aTHX_ f); | |
1364 | else | |
1365 | return PerlIOBase_close(aTHX_ f); | |
37725cdc | 1366 | } |
14a5cf38 | 1367 | else { |
1604cfb0 MS |
1368 | SETERRNO(EBADF, SS_IVCHAN); |
1369 | return -1; | |
14a5cf38 | 1370 | } |
76ced9ad NIS |
1371 | } |
1372 | ||
b931b1d9 | 1373 | int |
e87a358a | 1374 | Perl_PerlIO_close(pTHX_ PerlIO *f) |
b931b1d9 | 1375 | { |
de009b76 | 1376 | const int code = PerlIO__close(aTHX_ f); |
37725cdc | 1377 | while (PerlIOValid(f)) { |
1604cfb0 MS |
1378 | PerlIO_pop(aTHX_ f); |
1379 | if (PerlIO_lockcnt(f)) | |
1380 | /* we're in use; the 'pop' deferred freeing the structure */ | |
1381 | f = PerlIONext(f); | |
f6c77cf1 | 1382 | } |
14a5cf38 | 1383 | return code; |
b931b1d9 NIS |
1384 | } |
1385 | ||
b931b1d9 | 1386 | int |
e87a358a | 1387 | Perl_PerlIO_fileno(pTHX_ PerlIO *f) |
b931b1d9 | 1388 | { |
20b7effb | 1389 | Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f)); |
b931b1d9 NIS |
1390 | } |
1391 | ||
1141d9f8 | 1392 | |
fcf2db38 | 1393 | static PerlIO_funcs * |
2edd7e44 NIS |
1394 | PerlIO_layer_from_ref(pTHX_ SV *sv) |
1395 | { | |
14a5cf38 | 1396 | /* |
71200d45 | 1397 | * For any scalar type load the handler which is bundled with perl |
14a5cf38 | 1398 | */ |
526fd1b4 | 1399 | if (SvTYPE(sv) < SVt_PVAV && (!isGV_with_GP(sv) || SvFAKE(sv))) { |
1604cfb0 MS |
1400 | PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1); |
1401 | /* This isn't supposed to happen, since PerlIO::scalar is core, | |
1402 | * but could happen anyway in smaller installs or with PAR */ | |
1403 | if (!f) | |
1404 | /* diag_listed_as: Unknown PerlIO layer "%s" */ | |
1405 | Perl_ck_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\""); | |
1406 | return f; | |
75208dda | 1407 | } |
14a5cf38 JH |
1408 | |
1409 | /* | |
71200d45 | 1410 | * For other types allow if layer is known but don't try and load it |
14a5cf38 JH |
1411 | */ |
1412 | switch (SvTYPE(sv)) { | |
1413 | case SVt_PVAV: | |
1604cfb0 | 1414 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Array"), 0); |
14a5cf38 | 1415 | case SVt_PVHV: |
1604cfb0 | 1416 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Hash"), 0); |
14a5cf38 | 1417 | case SVt_PVCV: |
1604cfb0 | 1418 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Code"), 0); |
14a5cf38 | 1419 | case SVt_PVGV: |
1604cfb0 | 1420 | return PerlIO_find_layer(aTHX_ STR_WITH_LEN("Glob"), 0); |
42d0e0b7 | 1421 | default: |
1604cfb0 | 1422 | return NULL; |
14a5cf38 | 1423 | } |
2edd7e44 NIS |
1424 | } |
1425 | ||
fcf2db38 | 1426 | PerlIO_list_t * |
14a5cf38 | 1427 | PerlIO_resolve_layers(pTHX_ const char *layers, |
1604cfb0 | 1428 | const char *mode, int narg, SV **args) |
14a5cf38 JH |
1429 | { |
1430 | PerlIO_list_t *def = PerlIO_default_layers(aTHX); | |
1431 | int incdef = 1; | |
a1ea730d | 1432 | if (!PL_perlio) |
1604cfb0 | 1433 | PerlIO_stdstreams(aTHX); |
14a5cf38 | 1434 | if (narg) { |
1604cfb0 MS |
1435 | SV * const arg = *args; |
1436 | /* | |
1437 | * If it is a reference but not an object see if we have a handler | |
1438 | * for it | |
1439 | */ | |
1440 | if (SvROK(arg) && !SvOBJECT(SvRV(arg))) { | |
1441 | PerlIO_funcs * const handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); | |
1442 | if (handler) { | |
1443 | def = PerlIO_list_alloc(aTHX); | |
1444 | PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); | |
1445 | incdef = 0; | |
1446 | } | |
1447 | /* | |
1448 | * Don't fail if handler cannot be found :via(...) etc. may do | |
0c6362ad | 1449 | * something sensible else we will just stringify and open |
1604cfb0 MS |
1450 | * resulting string. |
1451 | */ | |
1452 | } | |
14a5cf38 | 1453 | } |
9fe371da | 1454 | if (!layers || !*layers) |
1604cfb0 | 1455 | layers = Perl_PerlIO_context_layers(aTHX_ mode); |
14a5cf38 | 1456 | if (layers && *layers) { |
1604cfb0 MS |
1457 | PerlIO_list_t *av; |
1458 | if (incdef) { | |
1459 | av = PerlIO_clone_list(aTHX_ def, NULL); | |
1460 | } | |
1461 | else { | |
1462 | av = def; | |
1463 | } | |
1464 | if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { | |
1465 | return av; | |
1466 | } | |
1467 | else { | |
1468 | PerlIO_list_free(aTHX_ av); | |
1469 | return NULL; | |
1470 | } | |
14a5cf38 JH |
1471 | } |
1472 | else { | |
1604cfb0 MS |
1473 | if (incdef) |
1474 | def->refcnt++; | |
1475 | return def; | |
14a5cf38 | 1476 | } |
ee518936 NIS |
1477 | } |
1478 | ||
1479 | PerlIO * | |
14a5cf38 | 1480 | PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, |
1604cfb0 | 1481 | int imode, int perm, PerlIO *f, int narg, SV **args) |
14a5cf38 JH |
1482 | { |
1483 | if (!f && narg == 1 && *args == &PL_sv_undef) { | |
16bac4a4 | 1484 | imode = PerlIOUnix_oflags(mode); |
ae73d7ec | 1485 | |
1604cfb0 MS |
1486 | if (imode != -1 && (f = PerlIO_tmpfile_flags(imode))) { |
1487 | if (!layers || !*layers) | |
1488 | layers = Perl_PerlIO_context_layers(aTHX_ mode); | |
1489 | if (layers && *layers) | |
1490 | PerlIO_apply_layers(aTHX_ f, mode, layers); | |
1491 | } | |
14a5cf38 JH |
1492 | } |
1493 | else { | |
1604cfb0 MS |
1494 | PerlIO_list_t *layera; |
1495 | IV n; | |
1496 | PerlIO_funcs *tab = NULL; | |
1497 | if (PerlIOValid(f)) { | |
1498 | /* | |
1499 | * This is "reopen" - it is not tested as perl does not use it | |
1500 | * yet | |
1501 | */ | |
1502 | PerlIOl *l = *f; | |
1503 | layera = PerlIO_list_alloc(aTHX); | |
1504 | while (l) { | |
1505 | SV *arg = NULL; | |
1506 | if (l->tab && l->tab->Getarg) | |
1507 | arg = (*l->tab->Getarg) (aTHX_ &l, NULL, 0); | |
1508 | PerlIO_list_push(aTHX_ layera, l->tab, | |
1509 | (arg) ? arg : &PL_sv_undef); | |
1510 | SvREFCNT_dec(arg); | |
1511 | l = *PerlIONext(&l); | |
1512 | } | |
1513 | } | |
1514 | else { | |
1515 | layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); | |
1516 | if (!layera) { | |
1517 | return NULL; | |
1518 | } | |
1519 | } | |
1520 | /* | |
1521 | * Start at "top" of layer stack | |
1522 | */ | |
1523 | n = layera->cur - 1; | |
1524 | while (n >= 0) { | |
1525 | PerlIO_funcs * const t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); | |
1526 | if (t && t->Open) { | |
1527 | tab = t; | |
1528 | break; | |
1529 | } | |
1530 | n--; | |
1531 | } | |
1532 | if (tab) { | |
1533 | /* | |
1534 | * Found that layer 'n' can do opens - call it | |
1535 | */ | |
1536 | if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { | |
1537 | Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); | |
1538 | } | |
1539 | DEBUG_i( PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", | |
e17bc05a TC |
1540 | tab->name, layers ? layers : "(Null)", mode, fd, |
1541 | imode, perm, (void*)f, narg, (void*)args) ); | |
1604cfb0 MS |
1542 | if (tab->Open) |
1543 | f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, | |
1544 | f, narg, args); | |
1545 | else { | |
1546 | SETERRNO(EINVAL, LIB_INVARG); | |
1547 | f = NULL; | |
1548 | } | |
1549 | if (f) { | |
1550 | if (n + 1 < layera->cur) { | |
1551 | /* | |
1552 | * More layers above the one that we used to open - | |
1553 | * apply them now | |
1554 | */ | |
1555 | if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { | |
1556 | /* If pushing layers fails close the file */ | |
1557 | PerlIO_close(f); | |
1558 | f = NULL; | |
1559 | } | |
1560 | } | |
1561 | } | |
1562 | } | |
1563 | PerlIO_list_free(aTHX_ layera); | |
14a5cf38 JH |
1564 | } |
1565 | return f; | |
ee518936 | 1566 | } |
b931b1d9 NIS |
1567 | |
1568 | ||
9e353e3b | 1569 | SSize_t |
e87a358a | 1570 | Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 1571 | { |
7918f24d NC |
1572 | PERL_ARGS_ASSERT_PERLIO_READ; |
1573 | ||
b32dd47e | 1574 | Perl_PerlIO_or_Base(f, Read, read, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1575 | } |
1576 | ||
313ca112 | 1577 | SSize_t |
e87a358a | 1578 | Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1579 | { |
7918f24d NC |
1580 | PERL_ARGS_ASSERT_PERLIO_UNREAD; |
1581 | ||
b32dd47e | 1582 | Perl_PerlIO_or_Base(f, Unread, unread, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1583 | } |
1584 | ||
9e353e3b | 1585 | SSize_t |
e87a358a | 1586 | Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 1587 | { |
7918f24d NC |
1588 | PERL_ARGS_ASSERT_PERLIO_WRITE; |
1589 | ||
b32dd47e | 1590 | Perl_PerlIO_or_fail(f, Write, -1, (aTHX_ f, vbuf, count)); |
760ac839 LW |
1591 | } |
1592 | ||
6f9d8c32 | 1593 | int |
e87a358a | 1594 | Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
760ac839 | 1595 | { |
b32dd47e | 1596 | Perl_PerlIO_or_fail(f, Seek, -1, (aTHX_ f, offset, whence)); |
760ac839 LW |
1597 | } |
1598 | ||
9e353e3b | 1599 | Off_t |
e87a358a | 1600 | Perl_PerlIO_tell(pTHX_ PerlIO *f) |
760ac839 | 1601 | { |
b32dd47e | 1602 | Perl_PerlIO_or_fail(f, Tell, -1, (aTHX_ f)); |
760ac839 LW |
1603 | } |
1604 | ||
6f9d8c32 | 1605 | int |
e87a358a | 1606 | Perl_PerlIO_flush(pTHX_ PerlIO *f) |
760ac839 | 1607 | { |
14a5cf38 | 1608 | if (f) { |
1604cfb0 MS |
1609 | if (*f) { |
1610 | const PerlIO_funcs *tab = PerlIOBase(f)->tab; | |
1611 | ||
1612 | if (tab && tab->Flush) | |
1613 | return (*tab->Flush) (aTHX_ f); | |
1614 | else | |
1615 | return 0; /* If no Flush defined, silently succeed. */ | |
1616 | } | |
1617 | else { | |
1618 | DEBUG_i( PerlIO_debug("Cannot flush f=%p\n", (void*)f) ); | |
1619 | SETERRNO(EBADF, SS_IVCHAN); | |
1620 | return -1; | |
1621 | } | |
14a5cf38 JH |
1622 | } |
1623 | else { | |
1604cfb0 MS |
1624 | /* |
1625 | * Is it good API design to do flush-all on NULL, a potentially | |
1626 | * erroneous input? Maybe some magical value (PerlIO* | |
1627 | * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar | |
1628 | * things on fflush(NULL), but should we be bound by their design | |
1629 | * decisions? --jhi | |
1630 | */ | |
1631 | PerlIOl **table = &PL_perlio; | |
1632 | PerlIOl *ff; | |
1633 | int code = 0; | |
1634 | while ((ff = *table)) { | |
1635 | int i; | |
3ae398fb LM |
1636 | table = &ff->next; |
1637 | ff++; | |
1604cfb0 MS |
1638 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
1639 | if (ff->next && PerlIO_flush(&(ff->next)) != 0) | |
1640 | code = -1; | |
1641 | ff++; | |
1642 | } | |
1643 | } | |
1644 | return code; | |
14a5cf38 | 1645 | } |
760ac839 LW |
1646 | } |
1647 | ||
a9c883f6 | 1648 | void |
f62ce20a | 1649 | PerlIOBase_flush_linebuf(pTHX) |
a9c883f6 | 1650 | { |
303f2dc3 DM |
1651 | PerlIOl **table = &PL_perlio; |
1652 | PerlIOl *f; | |
14a5cf38 | 1653 | while ((f = *table)) { |
1604cfb0 | 1654 | int i; |
3ae398fb LM |
1655 | table = &f->next; |
1656 | f++; | |
1604cfb0 MS |
1657 | for (i = 1; i < PERLIO_TABLE_SIZE; i++) { |
1658 | if (f->next | |
1659 | && (PerlIOBase(&(f->next))-> | |
1660 | flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1661 | == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) | |
1662 | PerlIO_flush(&(f->next)); | |
1663 | f++; | |
1664 | } | |
a9c883f6 | 1665 | } |
a9c883f6 NIS |
1666 | } |
1667 | ||
06da4f11 | 1668 | int |
e87a358a | 1669 | Perl_PerlIO_fill(pTHX_ PerlIO *f) |
06da4f11 | 1670 | { |
b32dd47e | 1671 | Perl_PerlIO_or_fail(f, Fill, -1, (aTHX_ f)); |
06da4f11 NIS |
1672 | } |
1673 | ||
f3862f8b NIS |
1674 | int |
1675 | PerlIO_isutf8(PerlIO *f) | |
1676 | { | |
1b7a0411 | 1677 | if (PerlIOValid(f)) |
1604cfb0 | 1678 | return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; |
1b7a0411 | 1679 | else |
1604cfb0 | 1680 | SETERRNO(EBADF, SS_IVCHAN); |
37725cdc | 1681 | |
1b7a0411 | 1682 | return -1; |
f3862f8b NIS |
1683 | } |
1684 | ||
6f9d8c32 | 1685 | int |
e87a358a | 1686 | Perl_PerlIO_eof(pTHX_ PerlIO *f) |
760ac839 | 1687 | { |
b32dd47e | 1688 | Perl_PerlIO_or_Base(f, Eof, eof, -1, (aTHX_ f)); |
9e353e3b NIS |
1689 | } |
1690 | ||
9e353e3b | 1691 | int |
e87a358a | 1692 | Perl_PerlIO_error(pTHX_ PerlIO *f) |
9e353e3b | 1693 | { |
b32dd47e | 1694 | Perl_PerlIO_or_Base(f, Error, error, -1, (aTHX_ f)); |
9e353e3b NIS |
1695 | } |
1696 | ||
9e353e3b | 1697 | void |
e87a358a | 1698 | Perl_PerlIO_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 1699 | { |
b32dd47e | 1700 | Perl_PerlIO_or_Base_void(f, Clearerr, clearerr, (aTHX_ f)); |
9e353e3b NIS |
1701 | } |
1702 | ||
9e353e3b | 1703 | void |
e87a358a | 1704 | Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 1705 | { |
b32dd47e | 1706 | Perl_PerlIO_or_Base_void(f, Setlinebuf, setlinebuf, (aTHX_ f)); |
9e353e3b NIS |
1707 | } |
1708 | ||
9e353e3b NIS |
1709 | int |
1710 | PerlIO_has_base(PerlIO *f) | |
1711 | { | |
1b7a0411 | 1712 | if (PerlIOValid(f)) { |
1604cfb0 | 1713 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 | 1714 | |
1604cfb0 MS |
1715 | if (tab) |
1716 | return (tab->Get_base != NULL); | |
1b7a0411 | 1717 | } |
1b7a0411 JH |
1718 | |
1719 | return 0; | |
760ac839 LW |
1720 | } |
1721 | ||
9e353e3b NIS |
1722 | int |
1723 | PerlIO_fast_gets(PerlIO *f) | |
760ac839 | 1724 | { |
d7dfc388 | 1725 | if (PerlIOValid(f)) { |
1604cfb0 MS |
1726 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { |
1727 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; | |
1b7a0411 | 1728 | |
1604cfb0 MS |
1729 | if (tab) |
1730 | return (tab->Set_ptrcnt != NULL); | |
1731 | } | |
14a5cf38 | 1732 | } |
1b7a0411 | 1733 | |
14a5cf38 | 1734 | return 0; |
9e353e3b NIS |
1735 | } |
1736 | ||
9e353e3b NIS |
1737 | int |
1738 | PerlIO_has_cntptr(PerlIO *f) | |
1739 | { | |
04892f78 | 1740 | if (PerlIOValid(f)) { |
1604cfb0 | 1741 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 | 1742 | |
1604cfb0 MS |
1743 | if (tab) |
1744 | return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); | |
14a5cf38 | 1745 | } |
1b7a0411 | 1746 | |
14a5cf38 | 1747 | return 0; |
9e353e3b NIS |
1748 | } |
1749 | ||
9e353e3b NIS |
1750 | int |
1751 | PerlIO_canset_cnt(PerlIO *f) | |
1752 | { | |
04892f78 | 1753 | if (PerlIOValid(f)) { |
1604cfb0 | 1754 | const PerlIO_funcs * const tab = PerlIOBase(f)->tab; |
1b7a0411 | 1755 | |
1604cfb0 MS |
1756 | if (tab) |
1757 | return (tab->Set_ptrcnt != NULL); | |
14a5cf38 | 1758 | } |
1b7a0411 | 1759 | |
14a5cf38 | 1760 | return 0; |
760ac839 LW |
1761 | } |
1762 | ||
888911fc | 1763 | STDCHAR * |
e87a358a | 1764 | Perl_PerlIO_get_base(pTHX_ PerlIO *f) |
760ac839 | 1765 | { |
b32dd47e | 1766 | Perl_PerlIO_or_fail(f, Get_base, NULL, (aTHX_ f)); |
9e353e3b NIS |
1767 | } |
1768 | ||
b66f3475 | 1769 | SSize_t |
e87a358a | 1770 | Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 1771 | { |
b66f3475 | 1772 | /* Note that Get_bufsiz returns a Size_t */ |
b32dd47e | 1773 | Perl_PerlIO_or_fail(f, Get_bufsiz, -1, (aTHX_ f)); |
9e353e3b NIS |
1774 | } |
1775 | ||
9e353e3b | 1776 | STDCHAR * |
e87a358a | 1777 | Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 1778 | { |
b32dd47e | 1779 | Perl_PerlIO_or_fail(f, Get_ptr, NULL, (aTHX_ f)); |
9e353e3b NIS |
1780 | } |
1781 | ||
b66f3475 | 1782 | SSize_t |
e87a358a | 1783 | Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 1784 | { |
b32dd47e | 1785 | Perl_PerlIO_or_fail(f, Get_cnt, -1, (aTHX_ f)); |
9e353e3b NIS |
1786 | } |
1787 | ||
9e353e3b | 1788 | void |
b66f3475 | 1789 | Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, SSize_t cnt) |
9e353e3b | 1790 | { |
b32dd47e | 1791 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, NULL, cnt)); |
9e353e3b NIS |
1792 | } |
1793 | ||
9e353e3b | 1794 | void |
b66f3475 | 1795 | Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 1796 | { |
b32dd47e | 1797 | Perl_PerlIO_or_fail_void(f, Set_ptrcnt, (aTHX_ f, ptr, cnt)); |
9e353e3b NIS |
1798 | } |
1799 | ||
4ec2216f | 1800 | |
9e353e3b | 1801 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 1802 | /* |
71200d45 | 1803 | * utf8 and raw dummy layers |
14a5cf38 | 1804 | */ |
dfebf958 | 1805 | |
26fb694e | 1806 | IV |
2dc2558e | 1807 | PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
26fb694e | 1808 | { |
96a5add6 | 1809 | PERL_UNUSED_CONTEXT; |
8772537c AL |
1810 | PERL_UNUSED_ARG(mode); |
1811 | PERL_UNUSED_ARG(arg); | |
00f51856 | 1812 | if (PerlIOValid(f)) { |
1604cfb0 MS |
1813 | if (tab && tab->kind & PERLIO_K_UTF8) |
1814 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
1815 | else | |
1816 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; | |
1817 | return 0; | |
14a5cf38 JH |
1818 | } |
1819 | return -1; | |
26fb694e NIS |
1820 | } |
1821 | ||
27da23d5 | 1822 | PERLIO_FUNCS_DECL(PerlIO_utf8) = { |
2dc2558e | 1823 | sizeof(PerlIO_funcs), |
14a5cf38 | 1824 | "utf8", |
2dc2558e | 1825 | 0, |
a778d1f5 | 1826 | PERLIO_K_DUMMY | PERLIO_K_UTF8 | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1827 | PerlIOUtf8_pushed, |
1828 | NULL, | |
c0888ace | 1829 | PerlIOBase_open, |
14a5cf38 JH |
1830 | NULL, |
1831 | NULL, | |
1832 | NULL, | |
1833 | NULL, | |
1834 | NULL, | |
1835 | NULL, | |
1836 | NULL, | |
1837 | NULL, | |
de009b76 AL |
1838 | NULL, |
1839 | NULL, | |
22569500 NIS |
1840 | NULL, /* flush */ |
1841 | NULL, /* fill */ | |
14a5cf38 JH |
1842 | NULL, |
1843 | NULL, | |
1844 | NULL, | |
1845 | NULL, | |
22569500 NIS |
1846 | NULL, /* get_base */ |
1847 | NULL, /* get_bufsiz */ | |
1848 | NULL, /* get_ptr */ | |
1849 | NULL, /* get_cnt */ | |
1850 | NULL, /* set_ptrcnt */ | |
26fb694e NIS |
1851 | }; |
1852 | ||
27da23d5 | 1853 | PERLIO_FUNCS_DECL(PerlIO_byte) = { |
2dc2558e | 1854 | sizeof(PerlIO_funcs), |
14a5cf38 | 1855 | "bytes", |
2dc2558e | 1856 | 0, |
a778d1f5 | 1857 | PERLIO_K_DUMMY | PERLIO_K_MULTIARG, |
14a5cf38 JH |
1858 | PerlIOUtf8_pushed, |
1859 | NULL, | |
c0888ace | 1860 | PerlIOBase_open, |
14a5cf38 JH |
1861 | NULL, |
1862 | NULL, | |
1863 | NULL, | |
1864 | NULL, | |
1865 | NULL, | |
1866 | NULL, | |
1867 | NULL, | |
1868 | NULL, | |
de009b76 AL |
1869 | NULL, |
1870 | NULL, | |
22569500 NIS |
1871 | NULL, /* flush */ |
1872 | NULL, /* fill */ | |
14a5cf38 JH |
1873 | NULL, |
1874 | NULL, | |
1875 | NULL, | |
1876 | NULL, | |
22569500 NIS |
1877 | NULL, /* get_base */ |
1878 | NULL, /* get_bufsiz */ | |
1879 | NULL, /* get_ptr */ | |
1880 | NULL, /* get_cnt */ | |
1881 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1882 | }; |
1883 | ||
27da23d5 | 1884 | PERLIO_FUNCS_DECL(PerlIO_raw) = { |
2dc2558e | 1885 | sizeof(PerlIO_funcs), |
14a5cf38 | 1886 | "raw", |
2dc2558e | 1887 | 0, |
14a5cf38 JH |
1888 | PERLIO_K_DUMMY, |
1889 | PerlIORaw_pushed, | |
1890 | PerlIOBase_popped, | |
ecfd0649 | 1891 | PerlIOBase_open, |
14a5cf38 JH |
1892 | NULL, |
1893 | NULL, | |
1894 | NULL, | |
1895 | NULL, | |
1896 | NULL, | |
1897 | NULL, | |
1898 | NULL, | |
1899 | NULL, | |
de009b76 AL |
1900 | NULL, |
1901 | NULL, | |
22569500 NIS |
1902 | NULL, /* flush */ |
1903 | NULL, /* fill */ | |
14a5cf38 JH |
1904 | NULL, |
1905 | NULL, | |
1906 | NULL, | |
1907 | NULL, | |
22569500 NIS |
1908 | NULL, /* get_base */ |
1909 | NULL, /* get_bufsiz */ | |
1910 | NULL, /* get_ptr */ | |
1911 | NULL, /* get_cnt */ | |
1912 | NULL, /* set_ptrcnt */ | |
dfebf958 NIS |
1913 | }; |
1914 | /*--------------------------------------------------------------------------------------*/ | |
1915 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 1916 | /* |
71200d45 | 1917 | * "Methods" of the "base class" |
14a5cf38 | 1918 | */ |
9e353e3b NIS |
1919 | |
1920 | IV | |
f62ce20a | 1921 | PerlIOBase_fileno(pTHX_ PerlIO *f) |
9e353e3b | 1922 | { |
04892f78 | 1923 | return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; |
9e353e3b NIS |
1924 | } |
1925 | ||
f5b9d040 | 1926 | char * |
81428673 | 1927 | PerlIO_modestr(PerlIO * f, char *buf) |
14a5cf38 JH |
1928 | { |
1929 | char *s = buf; | |
81428673 | 1930 | if (PerlIOValid(f)) { |
1604cfb0 MS |
1931 | const IV flags = PerlIOBase(f)->flags; |
1932 | if (flags & PERLIO_F_APPEND) { | |
1933 | *s++ = 'a'; | |
1934 | if (flags & PERLIO_F_CANREAD) { | |
1935 | *s++ = '+'; | |
1936 | } | |
1937 | } | |
1938 | else if (flags & PERLIO_F_CANREAD) { | |
1939 | *s++ = 'r'; | |
1940 | if (flags & PERLIO_F_CANWRITE) | |
1941 | *s++ = '+'; | |
1942 | } | |
1943 | else if (flags & PERLIO_F_CANWRITE) { | |
1944 | *s++ = 'w'; | |
1945 | if (flags & PERLIO_F_CANREAD) { | |
1946 | *s++ = '+'; | |
1947 | } | |
1948 | } | |
35990314 | 1949 | #ifdef PERLIO_USING_CRLF |
1604cfb0 MS |
1950 | if (!(flags & PERLIO_F_CRLF)) |
1951 | *s++ = 'b'; | |
5f1a76d0 | 1952 | #endif |
81428673 | 1953 | } |
14a5cf38 JH |
1954 | *s = '\0'; |
1955 | return buf; | |
f5b9d040 NIS |
1956 | } |
1957 | ||
81428673 | 1958 | |
76ced9ad | 1959 | IV |
2dc2558e | 1960 | PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
9e353e3b | 1961 | { |
de009b76 | 1962 | PerlIOl * const l = PerlIOBase(f); |
96a5add6 | 1963 | PERL_UNUSED_CONTEXT; |
8772537c | 1964 | PERL_UNUSED_ARG(arg); |
de009b76 | 1965 | |
14a5cf38 | 1966 | l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | |
1604cfb0 | 1967 | PERLIO_F_TRUNCATE | PERLIO_F_APPEND); |
cc6623a8 | 1968 | if (tab && tab->Set_ptrcnt != NULL) |
1604cfb0 | 1969 | l->flags |= PERLIO_F_FASTGETS; |
14a5cf38 | 1970 | if (mode) { |
1604cfb0 MS |
1971 | if (*mode == IoTYPE_NUMERIC || *mode == IoTYPE_IMPLICIT) |
1972 | mode++; | |
1973 | switch (*mode++) { | |
1974 | case 'r': | |
1975 | l->flags |= PERLIO_F_CANREAD; | |
1976 | break; | |
1977 | case 'a': | |
1978 | l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; | |
1979 | break; | |
1980 | case 'w': | |
1981 | l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; | |
1982 | break; | |
1983 | default: | |
1984 | SETERRNO(EINVAL, LIB_INVARG); | |
1985 | return -1; | |
1986 | } | |
31e7fc23 | 1987 | #ifdef __MVS__ /* XXX Perhaps should be be OEMVS instead of __MVS__ */ |
1604cfb0 | 1988 | { |
49fc4906 YK |
1989 | /* The mode variable contains one positional parameter followed by |
1990 | * optional keyword parameters. The positional parameters must be | |
1991 | * passed as lowercase characters. The keyword parameters can be | |
1992 | * passed in mixed case. They must be separated by commas. Only one | |
1993 | * instance of a keyword can be specified. */ | |
1604cfb0 MS |
1994 | int comma = 0; |
1995 | while (*mode) { | |
1996 | switch (*mode++) { | |
1997 | case '+': | |
1998 | if(!comma) | |
1999 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2000 | break; | |
2001 | case 'b': | |
2002 | if(!comma) | |
2003 | l->flags &= ~PERLIO_F_CRLF; | |
2004 | break; | |
2005 | case 't': | |
2006 | if(!comma) | |
2007 | l->flags |= PERLIO_F_CRLF; | |
2008 | break; | |
2009 | case ',': | |
2010 | comma = 1; | |
2011 | break; | |
2012 | default: | |
2013 | break; | |
2014 | } | |
2015 | } | |
2016 | } | |
49fc4906 | 2017 | #else |
1604cfb0 MS |
2018 | while (*mode) { |
2019 | switch (*mode++) { | |
2020 | case '+': | |
2021 | l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; | |
2022 | break; | |
2023 | case 'b': | |
2024 | l->flags &= ~PERLIO_F_CRLF; | |
2025 | break; | |
2026 | case 't': | |
2027 | l->flags |= PERLIO_F_CRLF; | |
2028 | break; | |
2029 | default: | |
2030 | SETERRNO(EINVAL, LIB_INVARG); | |
2031 | return -1; | |
2032 | } | |
2033 | } | |
49fc4906 | 2034 | #endif |
14a5cf38 JH |
2035 | } |
2036 | else { | |
1604cfb0 MS |
2037 | if (l->next) { |
2038 | l->flags |= l->next->flags & | |
2039 | (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | | |
2040 | PERLIO_F_APPEND); | |
2041 | } | |
14a5cf38 | 2042 | } |
5e2ab84b | 2043 | #if 0 |
e17bc05a | 2044 | DEBUG_i( |
14a5cf38 | 2045 | PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", |
1604cfb0 MS |
2046 | (void*)f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", |
2047 | l->flags, PerlIO_modestr(f, temp)); | |
e17bc05a | 2048 | ); |
5e2ab84b | 2049 | #endif |
14a5cf38 | 2050 | return 0; |
76ced9ad NIS |
2051 | } |
2052 | ||
2053 | IV | |
f62ce20a | 2054 | PerlIOBase_popped(pTHX_ PerlIO *f) |
76ced9ad | 2055 | { |
96a5add6 | 2056 | PERL_UNUSED_CONTEXT; |
8772537c | 2057 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2058 | return 0; |
760ac839 LW |
2059 | } |
2060 | ||
9e353e3b | 2061 | SSize_t |
f62ce20a | 2062 | PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2063 | { |
14a5cf38 | 2064 | /* |
71200d45 | 2065 | * Save the position as current head considers it |
14a5cf38 | 2066 | */ |
de009b76 | 2067 | const Off_t old = PerlIO_tell(f); |
a0714e2c | 2068 | PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_pending), "r", NULL); |
14a5cf38 | 2069 | PerlIOSelf(f, PerlIOBuf)->posn = old; |
de009b76 | 2070 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
9e353e3b NIS |
2071 | } |
2072 | ||
f6c77cf1 | 2073 | SSize_t |
f62ce20a | 2074 | PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
f6c77cf1 | 2075 | { |
14a5cf38 JH |
2076 | STDCHAR *buf = (STDCHAR *) vbuf; |
2077 | if (f) { | |
263df5f1 | 2078 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) { |
1604cfb0 MS |
2079 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; |
2080 | SETERRNO(EBADF, SS_IVCHAN); | |
2081 | PerlIO_save_errno(f); | |
2082 | return 0; | |
2083 | } | |
2084 | while (count > 0) { | |
2085 | get_cnt: | |
2086 | { | |
2087 | SSize_t avail = PerlIO_get_cnt(f); | |
2088 | SSize_t take = 0; | |
2089 | if (avail > 0) | |
2090 | take = (((SSize_t) count >= 0) && ((SSize_t)count < avail)) ? (SSize_t)count : avail; | |
2091 | if (take > 0) { | |
2092 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
2093 | Copy(ptr, buf, take, STDCHAR); | |
2094 | PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); | |
2095 | count -= take; | |
2096 | buf += take; | |
2097 | if (avail == 0) /* set_ptrcnt could have reset avail */ | |
2098 | goto get_cnt; | |
2099 | } | |
2100 | if (count > 0 && avail <= 0) { | |
2101 | if (PerlIO_fill(f) != 0) | |
2102 | break; | |
2103 | } | |
2104 | } | |
2105 | } | |
2106 | return (buf - (STDCHAR *) vbuf); | |
14a5cf38 | 2107 | } |
f6c77cf1 | 2108 | return 0; |
f6c77cf1 NIS |
2109 | } |
2110 | ||
9e353e3b | 2111 | IV |
f62ce20a | 2112 | PerlIOBase_noop_ok(pTHX_ PerlIO *f) |
9e353e3b | 2113 | { |
96a5add6 | 2114 | PERL_UNUSED_CONTEXT; |
8772537c | 2115 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2116 | return 0; |
9e353e3b NIS |
2117 | } |
2118 | ||
2119 | IV | |
f62ce20a | 2120 | PerlIOBase_noop_fail(pTHX_ PerlIO *f) |
06da4f11 | 2121 | { |
96a5add6 | 2122 | PERL_UNUSED_CONTEXT; |
8772537c | 2123 | PERL_UNUSED_ARG(f); |
14a5cf38 | 2124 | return -1; |
06da4f11 NIS |
2125 | } |
2126 | ||
2127 | IV | |
f62ce20a | 2128 | PerlIOBase_close(pTHX_ PerlIO *f) |
9e353e3b | 2129 | { |
37725cdc NIS |
2130 | IV code = -1; |
2131 | if (PerlIOValid(f)) { | |
1604cfb0 MS |
2132 | PerlIO *n = PerlIONext(f); |
2133 | code = PerlIO_flush(f); | |
2134 | PerlIOBase(f)->flags &= | |
2135 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2136 | while (PerlIOValid(n)) { | |
2137 | const PerlIO_funcs * const tab = PerlIOBase(n)->tab; | |
2138 | if (tab && tab->Close) { | |
2139 | if ((*tab->Close)(aTHX_ n) != 0) | |
2140 | code = -1; | |
2141 | break; | |
2142 | } | |
2143 | else { | |
2144 | PerlIOBase(n)->flags &= | |
2145 | ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); | |
2146 | } | |
2147 | n = PerlIONext(n); | |
2148 | } | |
37725cdc NIS |
2149 | } |
2150 | else { | |
1604cfb0 | 2151 | SETERRNO(EBADF, SS_IVCHAN); |
37725cdc | 2152 | } |
14a5cf38 | 2153 | return code; |
9e353e3b NIS |
2154 | } |
2155 | ||
2156 | IV | |
f62ce20a | 2157 | PerlIOBase_eof(pTHX_ PerlIO *f) |
9e353e3b | 2158 | { |
96a5add6 | 2159 | PERL_UNUSED_CONTEXT; |
04892f78 | 2160 | if (PerlIOValid(f)) { |
1604cfb0 | 2161 | return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; |
14a5cf38 JH |
2162 | } |
2163 | return 1; | |
9e353e3b NIS |
2164 | } |
2165 | ||
2166 | IV | |
f62ce20a | 2167 | PerlIOBase_error(pTHX_ PerlIO *f) |
9e353e3b | 2168 | { |
96a5add6 | 2169 | PERL_UNUSED_CONTEXT; |
04892f78 | 2170 | if (PerlIOValid(f)) { |
1604cfb0 | 2171 | return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; |
14a5cf38 JH |
2172 | } |
2173 | return 1; | |
9e353e3b NIS |
2174 | } |
2175 | ||
2176 | void | |
f62ce20a | 2177 | PerlIOBase_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 2178 | { |
04892f78 | 2179 | if (PerlIOValid(f)) { |
1604cfb0 MS |
2180 | PerlIO * const n = PerlIONext(f); |
2181 | PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); | |
2182 | if (PerlIOValid(n)) | |
2183 | PerlIO_clearerr(n); | |
14a5cf38 | 2184 | } |
9e353e3b NIS |
2185 | } |
2186 | ||
2187 | void | |
f62ce20a | 2188 | PerlIOBase_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 2189 | { |
96a5add6 | 2190 | PERL_UNUSED_CONTEXT; |
04892f78 | 2191 | if (PerlIOValid(f)) { |
1604cfb0 | 2192 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; |
14a5cf38 | 2193 | } |
9e353e3b NIS |
2194 | } |
2195 | ||
93a8090d NIS |
2196 | SV * |
2197 | PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) | |
2198 | { | |
2199 | if (!arg) | |
1604cfb0 | 2200 | return NULL; |
24d147a6 | 2201 | #ifdef USE_ITHREADS |
93a8090d | 2202 | if (param) { |
1604cfb0 MS |
2203 | arg = sv_dup(arg, param); |
2204 | SvREFCNT_inc_simple_void_NN(arg); | |
2205 | return arg; | |
93a8090d NIS |
2206 | } |
2207 | else { | |
1604cfb0 | 2208 | return newSVsv(arg); |
93a8090d NIS |
2209 | } |
2210 | #else | |
1b6737cc | 2211 | PERL_UNUSED_ARG(param); |
93a8090d NIS |
2212 | return newSVsv(arg); |
2213 | #endif | |
2214 | } | |
2215 | ||
2216 | PerlIO * | |
ecdeb87c | 2217 | PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
93a8090d | 2218 | { |
1b6737cc | 2219 | PerlIO * const nexto = PerlIONext(o); |
04892f78 | 2220 | if (PerlIOValid(nexto)) { |
1604cfb0 MS |
2221 | const PerlIO_funcs * const tab = PerlIOBase(nexto)->tab; |
2222 | if (tab && tab->Dup) | |
2223 | f = (*tab->Dup)(aTHX_ f, nexto, param, flags); | |
2224 | else | |
2225 | f = PerlIOBase_dup(aTHX_ f, nexto, param, flags); | |
93a8090d NIS |
2226 | } |
2227 | if (f) { | |
1604cfb0 MS |
2228 | PerlIO_funcs * const self = PerlIOBase(o)->tab; |
2229 | SV *arg = NULL; | |
2230 | char buf[8]; | |
2231 | assert(self); | |
2232 | DEBUG_i(PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", | |
e17bc05a TC |
2233 | self->name, |
2234 | (void*)f, (void*)o, (void*)param) ); | |
1604cfb0 MS |
2235 | if (self->Getarg) |
2236 | arg = (*self->Getarg)(aTHX_ o, param, flags); | |
2237 | f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); | |
2238 | if (f && PerlIOBase(o)->flags & PERLIO_F_UTF8) | |
2239 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
2240 | SvREFCNT_dec(arg); | |
93a8090d NIS |
2241 | } |
2242 | return f; | |
2243 | } | |
2244 | ||
27da23d5 | 2245 | /* PL_perlio_fd_refcnt[] is in intrpvar.h */ |
93a8090d | 2246 | |
8b84d7dd | 2247 | /* Must be called with PL_perlio_mutex locked. */ |
22c96fc1 | 2248 | static void |
ff25d7bc JH |
2249 | S_more_refcounted_fds(pTHX_ const int new_fd) |
2250 | PERL_TSA_REQUIRES(PL_perlio_mutex) | |
2251 | { | |
22c96fc1 | 2252 | const int old_max = PL_perlio_fd_refcnt_size; |
f4ae5be6 | 2253 | const int new_max = 16 + (new_fd & ~15); |
22c96fc1 NC |
2254 | int *new_array; |
2255 | ||
dd791c72 JH |
2256 | #ifndef PERL_IMPLICIT_SYS |
2257 | PERL_UNUSED_CONTEXT; | |
2258 | #endif | |
2259 | ||
e17bc05a TC |
2260 | DEBUG_i( PerlIO_debug("More fds - old=%d, need %d, new=%d\n", |
2261 | old_max, new_fd, new_max) ); | |
22c96fc1 NC |
2262 | |
2263 | if (new_fd < old_max) { | |
1604cfb0 | 2264 | return; |
22c96fc1 NC |
2265 | } |
2266 | ||
f4ae5be6 NC |
2267 | assert (new_max > new_fd); |
2268 | ||
eae082a0 JH |
2269 | /* Use plain realloc() since we need this memory to be really |
2270 | * global and visible to all the interpreters and/or threads. */ | |
2271 | new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int)); | |
22c96fc1 NC |
2272 | |
2273 | if (!new_array) { | |
1604cfb0 MS |
2274 | MUTEX_UNLOCK(&PL_perlio_mutex); |
2275 | croak_no_mem(); | |
22c96fc1 NC |
2276 | } |
2277 | ||
2278 | PL_perlio_fd_refcnt_size = new_max; | |
2279 | PL_perlio_fd_refcnt = new_array; | |
2280 | ||
e17bc05a TC |
2281 | DEBUG_i( PerlIO_debug("Zeroing %p, %d\n", |
2282 | (void*)(new_array + old_max), | |
2283 | new_max - old_max) ); | |
22c96fc1 NC |
2284 | |
2285 | Zero(new_array + old_max, new_max - old_max, int); | |
2286 | } | |
2287 | ||
2288 | ||
93a8090d NIS |
2289 | void |
2290 | PerlIO_init(pTHX) | |
2291 | { | |
8b84d7dd | 2292 | /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */ |
96a5add6 | 2293 | PERL_UNUSED_CONTEXT; |
93a8090d NIS |
2294 | } |
2295 | ||
168d5872 NIS |
2296 | void |
2297 | PerlIOUnix_refcnt_inc(int fd) | |
2298 | { | |
27da23d5 | 2299 | dTHX; |
22c96fc1 | 2300 | if (fd >= 0) { |
22c96fc1 | 2301 | |
1604cfb0 MS |
2302 | MUTEX_LOCK(&PL_perlio_mutex); |
2303 | if (fd >= PL_perlio_fd_refcnt_size) | |
2304 | S_more_refcounted_fds(aTHX_ fd); | |
2305 | ||
2306 | PL_perlio_fd_refcnt[fd]++; | |
2307 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2308 | /* diag_listed_as: refcnt_inc: fd %d%s */ | |
2309 | Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n", | |
2310 | fd, PL_perlio_fd_refcnt[fd]); | |
2311 | } | |
2312 | DEBUG_i( PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n", | |
e17bc05a | 2313 | fd, PL_perlio_fd_refcnt[fd]) ); |
22c96fc1 | 2314 | |
1604cfb0 | 2315 | MUTEX_UNLOCK(&PL_perlio_mutex); |
8b84d7dd | 2316 | } else { |
1604cfb0 MS |
2317 | /* diag_listed_as: refcnt_inc: fd %d%s */ |
2318 | Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd); | |
168d5872 NIS |
2319 | } |
2320 | } | |
2321 | ||
168d5872 NIS |
2322 | int |
2323 | PerlIOUnix_refcnt_dec(int fd) | |
2324 | { | |
2325 | int cnt = 0; | |
22c96fc1 | 2326 | if (fd >= 0) { |
e17bc05a TC |
2327 | #ifdef DEBUGGING |
2328 | dTHX; | |
e17bc05a | 2329 | #endif |
1604cfb0 MS |
2330 | MUTEX_LOCK(&PL_perlio_mutex); |
2331 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2332 | /* diag_listed_as: refcnt_dec: fd %d%s */ | |
2333 | Perl_croak_nocontext("refcnt_dec: fd %d >= refcnt_size %d\n", | |
2334 | fd, PL_perlio_fd_refcnt_size); | |
2335 | } | |
2336 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2337 | /* diag_listed_as: refcnt_dec: fd %d%s */ | |
2338 | Perl_croak_nocontext("refcnt_dec: fd %d: %d <= 0\n", | |
2339 | fd, PL_perlio_fd_refcnt[fd]); | |
2340 | } | |
2341 | cnt = --PL_perlio_fd_refcnt[fd]; | |
2342 | DEBUG_i( PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt) ); | |
2343 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
8b84d7dd | 2344 | } else { |
1604cfb0 MS |
2345 | /* diag_listed_as: refcnt_dec: fd %d%s */ |
2346 | Perl_croak_nocontext("refcnt_dec: fd %d < 0\n", fd); | |
168d5872 NIS |
2347 | } |
2348 | return cnt; | |
2349 | } | |
2350 | ||
2e0cfa16 FC |
2351 | int |
2352 | PerlIOUnix_refcnt(int fd) | |
2353 | { | |
2354 | dTHX; | |
2355 | int cnt = 0; | |
2356 | if (fd >= 0) { | |
1604cfb0 MS |
2357 | MUTEX_LOCK(&PL_perlio_mutex); |
2358 | if (fd >= PL_perlio_fd_refcnt_size) { | |
2359 | /* diag_listed_as: refcnt: fd %d%s */ | |
2360 | Perl_croak(aTHX_ "refcnt: fd %d >= refcnt_size %d\n", | |
2361 | fd, PL_perlio_fd_refcnt_size); | |
2362 | } | |
2363 | if (PL_perlio_fd_refcnt[fd] <= 0) { | |
2364 | /* diag_listed_as: refcnt: fd %d%s */ | |
2365 | Perl_croak(aTHX_ "refcnt: fd %d: %d <= 0\n", | |
2366 | fd, PL_perlio_fd_refcnt[fd]); | |
2367 | } | |
2368 | cnt = PL_perlio_fd_refcnt[fd]; | |
2369 | MUTEX_UNLOCK(&PL_perlio_mutex); | |
2e0cfa16 | 2370 | } else { |
1604cfb0 MS |
2371 | /* diag_listed_as: refcnt: fd %d%s */ |
2372 | Perl_croak(aTHX_ "refcnt: fd %d < 0\n", fd); | |
2e0cfa16 FC |
2373 | } |
2374 | return cnt; | |
2375 | } | |
2376 | ||
694c95cf JH |
2377 | void |
2378 | PerlIO_cleanup(pTHX) | |
2379 | { | |
2380 | int i; | |
2381 | #ifdef USE_ITHREADS | |
e17bc05a | 2382 | DEBUG_i( PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX) ); |
9f4bd222 | 2383 | #else |
e17bc05a | 2384 | DEBUG_i( PerlIO_debug("Cleanup layers\n") ); |
694c95cf | 2385 | #endif |
e47547a8 | 2386 | |
694c95cf JH |
2387 | /* Raise STDIN..STDERR refcount so we don't close them */ |
2388 | for (i=0; i < 3; i++) | |
1604cfb0 | 2389 | PerlIOUnix_refcnt_inc(i); |
694c95cf JH |
2390 | PerlIO_cleantable(aTHX_ &PL_perlio); |
2391 | /* Restore STDIN..STDERR refcount */ | |
2392 | for (i=0; i < 3; i++) | |
1604cfb0 | 2393 | PerlIOUnix_refcnt_dec(i); |
9f4bd222 NIS |
2394 | |
2395 | if (PL_known_layers) { | |
1604cfb0 MS |
2396 | PerlIO_list_free(aTHX_ PL_known_layers); |
2397 | PL_known_layers = NULL; | |
9f4bd222 | 2398 | } |
27da23d5 | 2399 | if (PL_def_layerlist) { |
1604cfb0 MS |
2400 | PerlIO_list_free(aTHX_ PL_def_layerlist); |
2401 | PL_def_layerlist = NULL; | |
9f4bd222 | 2402 | } |
6cb8cb21 RGS |
2403 | } |
2404 | ||
0934c9d9 | 2405 | void PerlIO_teardown(void) /* Call only from PERL_SYS_TERM(). */ |
6cb8cb21 | 2406 | { |
4f3da17a DM |
2407 | #if 0 |
2408 | /* XXX we can't rely on an interpreter being present at this late stage, | |
2409 | XXX so we can't use a function like PerlLIO_write that relies on one | |
2410 | being present (at least in win32) :-(. | |
2411 | Disable for now. | |
2412 | */ | |
d0e4ea4d | 2413 | # ifdef DEBUGGING |
6cb8cb21 | 2414 | { |
1604cfb0 MS |
2415 | /* By now all filehandles should have been closed, so any |
2416 | * stray (non-STD-)filehandles indicate *possible* (PerlIO) | |
2417 | * errors. */ | |
77db880c JH |
2418 | #define PERLIO_TEARDOWN_MESSAGE_BUF_SIZE 64 |
2419 | #define PERLIO_TEARDOWN_MESSAGE_FD 2 | |
1604cfb0 MS |
2420 | char buf[PERLIO_TEARDOWN_MESSAGE_BUF_SIZE]; |
2421 | int i; | |
2422 | for (i = 3; i < PL_perlio_fd_refcnt_size; i++) { | |
2423 | if (PL_perlio_fd_refcnt[i]) { | |
2424 | const STRLEN len = | |
2425 | my_snprintf(buf, sizeof(buf), | |
2426 | "PerlIO_teardown: fd %d refcnt=%d\n", | |
2427 | i, PL_perlio_fd_refcnt[i]); | |
2428 | PerlLIO_write(PERLIO_TEARDOWN_MESSAGE_FD, buf, len); | |
2429 | } | |
2430 | } | |
6cb8cb21 | 2431 | } |
d0e4ea4d | 2432 | # endif |
4f3da17a | 2433 | #endif |
eae082a0 JH |
2434 | /* Not bothering with PL_perlio_mutex since by now |
2435 | * all the interpreters are gone. */ | |
1cd82952 RGS |
2436 | if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */ |
2437 | && PL_perlio_fd_refcnt) { | |
1604cfb0 MS |
2438 | free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */ |
2439 | PL_perlio_fd_refcnt = NULL; | |
2440 | PL_perlio_fd_refcnt_size = 0; | |
1cd82952 | 2441 | } |
694c95cf JH |
2442 | } |
2443 | ||
9e353e3b | 2444 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 2445 | /* |
71200d45 | 2446 | * Bottom-most level for UNIX-like case |
14a5cf38 | 2447 | */ |
9e353e3b | 2448 | |
14a5cf38 | 2449 | typedef struct { |
22569500 NIS |
2450 | struct _PerlIO base; /* The generic part */ |
2451 | int fd; /* UNIX like file descriptor */ | |
2452 | int oflags; /* open/fcntl flags */ | |
9e353e3b NIS |
2453 | } PerlIOUnix; |
2454 | ||
abf9167d DM |
2455 | static void |
2456 | S_lockcnt_dec(pTHX_ const void* f) | |
2457 | { | |
dd791c72 JH |
2458 | #ifndef PERL_IMPLICIT_SYS |
2459 | PERL_UNUSED_CONTEXT; | |
2460 | #endif | |
abf9167d DM |
2461 | PerlIO_lockcnt((PerlIO*)f)--; |
2462 | } | |
2463 | ||
2464 | ||
2465 | /* call the signal handler, and if that handler happens to clear | |
2466 | * this handle, free what we can and return true */ | |
2467 | ||
2468 | static bool | |
2469 | S_perlio_async_run(pTHX_ PerlIO* f) { | |
2470 | ENTER; | |
2471 | SAVEDESTRUCTOR_X(S_lockcnt_dec, (void*)f); | |
2472 | PerlIO_lockcnt(f)++; | |
2473 | PERL_ASYNC_CHECK(); | |
be48bbe8 | 2474 | if ( !(PerlIOBase(f)->flags & PERLIO_F_CLEARED) ) { |
1604cfb0 MS |
2475 | LEAVE; |
2476 | return 0; | |
be48bbe8 | 2477 | } |
abf9167d DM |
2478 | /* we've just run some perl-level code that could have done |
2479 | * anything, including closing the file or clearing this layer. | |
2480 | * If so, free any lower layers that have already been | |
2481 | * cleared, then return an error. */ | |
2482 | while (PerlIOValid(f) && | |
1604cfb0 | 2483 | (PerlIOBase(f)->flags & PERLIO_F_CLEARED)) |
abf9167d | 2484 | { |
1604cfb0 MS |
2485 | const PerlIOl *l = *f; |
2486 | *f = l->next; | |
2487 | Safefree(l); | |
abf9167d | 2488 | } |
be48bbe8 | 2489 | LEAVE; |
abf9167d DM |
2490 | return 1; |
2491 | } | |
2492 | ||
6f9d8c32 | 2493 | int |
9e353e3b | 2494 | PerlIOUnix_oflags(const char *mode) |
760ac839 | 2495 | { |
14a5cf38 | 2496 | int oflags = -1; |
3b6c1aba | 2497 | if (*mode == IoTYPE_IMPLICIT || *mode == IoTYPE_NUMERIC) |
1604cfb0 | 2498 | mode++; |
14a5cf38 JH |
2499 | switch (*mode) { |
2500 | case 'r': | |
1604cfb0 MS |
2501 | oflags = O_RDONLY; |
2502 | if (*++mode == '+') { | |
2503 | oflags = O_RDWR; | |
2504 | mode++; | |
2505 | } | |
2506 | break; | |
14a5cf38 JH |
2507 | |
2508 | case 'w': | |
1604cfb0 MS |
2509 | oflags = O_CREAT | O_TRUNC; |
2510 | if (*++mode == '+') { | |
2511 | oflags |= O_RDWR; | |
2512 | mode++; | |
2513 | } | |
2514 | else | |
2515 | oflags |= O_WRONLY; | |
2516 | break; | |
14a5cf38 JH |
2517 | |
2518 | case 'a': | |
1604cfb0 MS |
2519 | oflags = O_CREAT | O_APPEND; |
2520 | if (*++mode == '+') { | |
2521 | oflags |= O_RDWR; | |
2522 | mode++; | |
2523 | } | |
2524 | else | |
2525 | oflags |= O_WRONLY; | |
2526 | break; | |
14a5cf38 | 2527 | } |
43e5477e JH |
2528 | |
2529 | /* XXX TODO: PerlIO_open() test that exercises 'rb' and 'rt'. */ | |
2530 | ||
2531 | /* Unless O_BINARY is different from O_TEXT, first bit-or:ing one | |
2532 | * of them in, and then bit-and-masking the other them away, won't | |
2533 | * have much of an effect. */ | |
2534 | switch (*mode) { | |
2535 | case 'b': | |
2536 | #if O_TEXT != O_BINARY | |
2537 | oflags |= O_BINARY; | |
1604cfb0 | 2538 | oflags &= ~O_TEXT; |
43e5477e JH |
2539 | #endif |
2540 | mode++; | |
2541 | break; | |
2542 | case 't': | |
2543 | #if O_TEXT != O_BINARY | |
1604cfb0 MS |
2544 | oflags |= O_TEXT; |
2545 | oflags &= ~O_BINARY; | |
43e5477e JH |
2546 | #endif |
2547 | mode++; | |
2548 | break; | |
2549 | default: | |
d0e4ea4d | 2550 | #if O_BINARY != 0 |
43e5477e | 2551 | /* bit-or:ing with zero O_BINARY would be useless. */ |
1604cfb0 MS |
2552 | /* |
2553 | * If neither "t" nor "b" was specified, open the file | |
2554 | * in O_BINARY mode. | |
43e5477e JH |
2555 | * |
2556 | * Note that if something else than the zero byte was seen | |
2557 | * here (e.g. bogus mode "rx"), just few lines later we will | |
2558 | * set the errno and invalidate the flags. | |
1604cfb0 MS |
2559 | */ |
2560 | oflags |= O_BINARY; | |
d0e4ea4d | 2561 | #endif |
43e5477e | 2562 | break; |
93f31ee9 | 2563 | } |
14a5cf38 | 2564 | if (*mode || oflags == -1) { |
1604cfb0 MS |
2565 | SETERRNO(EINVAL, LIB_INVARG); |
2566 | oflags = -1; | |
14a5cf38 JH |
2567 | } |
2568 | return oflags; | |
9e353e3b NIS |
2569 | } |
2570 | ||
2571 | IV | |
f62ce20a | 2572 | PerlIOUnix_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2573 | { |
96a5add6 | 2574 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 2575 | return PerlIOSelf(f, PerlIOUnix)->fd; |
9e353e3b NIS |
2576 | } |
2577 | ||
aa063c35 NIS |
2578 | static void |
2579 | PerlIOUnix_setfd(pTHX_ PerlIO *f, int fd, int imode) | |
4b803d04 | 2580 | { |
de009b76 | 2581 | PerlIOUnix * const s = PerlIOSelf(f, PerlIOUnix); |
6caa5a9c | 2582 | #if defined(WIN32) |
aa063c35 NIS |
2583 | Stat_t st; |
2584 | if (PerlLIO_fstat(fd, &st) == 0) { | |
1604cfb0 MS |
2585 | if (!S_ISREG(st.st_mode)) { |
2586 | DEBUG_i( PerlIO_debug("%d is not regular file\n",fd) ); | |
2587 | PerlIOBase(f)->flags |= PERLIO_F_NOTREG; | |
2588 | } | |
2589 | else { | |
2590 | DEBUG_i( PerlIO_debug("%d _is_ a regular file\n",fd) ); | |
2591 | } | |
6caa5a9c NIS |
2592 | } |
2593 | #endif | |
aa063c35 NIS |
2594 | s->fd = fd; |
2595 | s->oflags = imode; | |
2596 | PerlIOUnix_refcnt_inc(fd); | |
96a5add6 | 2597 | PERL_UNUSED_CONTEXT; |
aa063c35 NIS |
2598 | } |
2599 | ||
2600 | IV | |
2601 | PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) | |
2602 | { | |
2603 | IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); | |
14a5cf38 | 2604 | if (*PerlIONext(f)) { |
1604cfb0 MS |
2605 | /* We never call down so do any pending stuff now */ |
2606 | PerlIO_flush(PerlIONext(f)); | |
2607 | /* | |
2608 | * XXX could (or should) we retrieve the oflags from the open file | |
2609 | * handle rather than believing the "mode" we are passed in? XXX | |
2610 | * Should the value on NULL mode be 0 or -1? | |
2611 | */ | |
acbd16bf | 2612 | PerlIOUnix_setfd(aTHX_ f, PerlIO_fileno(PerlIONext(f)), |
aa063c35 | 2613 | mode ? PerlIOUnix_oflags(mode) : -1); |
14a5cf38 JH |
2614 | } |
2615 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; | |
6caa5a9c | 2616 | |
14a5cf38 | 2617 | return code; |
4b803d04 NIS |
2618 | } |
2619 | ||
c2fcde81 JH |
2620 | IV |
2621 | PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) | |
2622 | { | |
de009b76 | 2623 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
0723351e | 2624 | Off_t new_loc; |
96a5add6 | 2625 | PERL_UNUSED_CONTEXT; |
c2fcde81 JH |
2626 | if (PerlIOBase(f)->flags & PERLIO_F_NOTREG) { |
2627 | #ifdef ESPIPE | |
1604cfb0 | 2628 | SETERRNO(ESPIPE, LIB_INVARG); |
c2fcde81 | 2629 | #else |
1604cfb0 | 2630 | SETERRNO(EINVAL, LIB_INVARG); |
c2fcde81 | 2631 | #endif |
1604cfb0 | 2632 | return -1; |
c2fcde81 | 2633 | } |
0723351e NC |
2634 | new_loc = PerlLIO_lseek(fd, offset, whence); |
2635 | if (new_loc == (Off_t) - 1) | |
1604cfb0 | 2636 | return -1; |
c2fcde81 JH |
2637 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
2638 | return 0; | |
2639 | } | |
2640 | ||
9e353e3b | 2641 | PerlIO * |
14a5cf38 | 2642 | PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1604cfb0 MS |
2643 | IV n, const char *mode, int fd, int imode, |
2644 | int perm, PerlIO *f, int narg, SV **args) | |
14a5cf38 | 2645 | { |
884fc2d3 | 2646 | bool known_cloexec = 0; |
d9dac8cd | 2647 | if (PerlIOValid(f)) { |
1604cfb0 MS |
2648 | if (PerlIOBase(f)->tab && PerlIOBase(f)->flags & PERLIO_F_OPEN) |
2649 | (*PerlIOBase(f)->tab->Close)(aTHX_ f); | |
14a5cf38 JH |
2650 | } |
2651 | if (narg > 0) { | |
1604cfb0 MS |
2652 | if (*mode == IoTYPE_NUMERIC) |
2653 | mode++; | |
2654 | else { | |
2655 | imode = PerlIOUnix_oflags(mode); | |
5e2ce0f3 | 2656 | #ifdef VMS |
1604cfb0 | 2657 | perm = 0777; /* preserve RMS defaults, ACL inheritance, etc. */ |
5e2ce0f3 | 2658 | #else |
1604cfb0 | 2659 | perm = 0666; |
5e2ce0f3 | 2660 | #endif |
1604cfb0 MS |
2661 | } |
2662 | if (imode != -1) { | |
41188aa0 | 2663 | STRLEN len; |
1604cfb0 MS |
2664 | const char *path = SvPV_const(*args, len); |
2665 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 2666 | return NULL; |
1604cfb0 MS |
2667 | fd = PerlLIO_open3_cloexec(path, imode, perm); |
2668 | known_cloexec = 1; | |
2669 | } | |
14a5cf38 JH |
2670 | } |
2671 | if (fd >= 0) { | |
1604cfb0 MS |
2672 | if (known_cloexec) |
2673 | setfd_inhexec_for_sysfd(fd); | |
2674 | else | |
2675 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
2676 | if (*mode == IoTYPE_IMPLICIT) | |
2677 | mode++; | |
2678 | if (!f) { | |
2679 | f = PerlIO_allocate(aTHX); | |
2680 | } | |
2681 | if (!PerlIOValid(f)) { | |
2682 | if (!(f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { | |
2683 | PerlLIO_close(fd); | |
2684 | return NULL; | |
2685 | } | |
2686 | } | |
aa063c35 | 2687 | PerlIOUnix_setfd(aTHX_ f, fd, imode); |
1604cfb0 MS |
2688 | PerlIOBase(f)->flags |= PERLIO_F_OPEN; |
2689 | if (*mode == IoTYPE_APPEND) | |
2690 | PerlIOUnix_seek(aTHX_ f, 0, SEEK_END); | |
2691 | return f; | |
14a5cf38 JH |
2692 | } |
2693 | else { | |
1604cfb0 MS |
2694 | if (f) { |
2695 | NOOP; | |
2696 | /* | |
2697 | * FIXME: pop layers ??? | |
2698 | */ | |
2699 | } | |
2700 | return NULL; | |
14a5cf38 | 2701 | } |
9e353e3b NIS |
2702 | } |
2703 | ||
71200d45 | 2704 | PerlIO * |
ecdeb87c | 2705 | PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 2706 | { |
dcda55fc | 2707 | const PerlIOUnix * const os = PerlIOSelf(o, PerlIOUnix); |
93a8090d | 2708 | int fd = os->fd; |
ecdeb87c | 2709 | if (flags & PERLIO_DUP_FD) { |
1604cfb0 MS |
2710 | fd = PerlLIO_dup_cloexec(fd); |
2711 | if (fd >= 0) | |
2712 | setfd_inhexec_for_sysfd(fd); | |
ecdeb87c | 2713 | } |
22c96fc1 | 2714 | if (fd >= 0) { |
1604cfb0 MS |
2715 | f = PerlIOBase_dup(aTHX_ f, o, param, flags); |
2716 | if (f) { | |
2717 | /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ | |
2718 | PerlIOUnix_setfd(aTHX_ f, fd, os->oflags); | |
2719 | return f; | |
2720 | } | |
0a20f69b | 2721 | PerlLIO_close(fd); |
71200d45 NIS |
2722 | } |
2723 | return NULL; | |
2724 | } | |
2725 | ||
2726 | ||
9e353e3b | 2727 | SSize_t |
f62ce20a | 2728 | PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 2729 | { |
abf9167d DM |
2730 | int fd; |
2731 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
1604cfb0 | 2732 | return -1; |
abf9167d | 2733 | fd = PerlIOSelf(f, PerlIOUnix)->fd; |
81428673 | 2734 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD) || |
1fd8f4ce | 2735 | PerlIOBase(f)->flags & (PERLIO_F_EOF|PERLIO_F_ERROR)) { |
1604cfb0 | 2736 | return 0; |
1fd8f4ce | 2737 | } |
14a5cf38 | 2738 | while (1) { |
1604cfb0 MS |
2739 | const SSize_t len = PerlLIO_read(fd, vbuf, count); |
2740 | if (len >= 0 || errno != EINTR) { | |
2741 | if (len < 0) { | |
2742 | if (errno != EAGAIN) { | |
2743 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2744 | PerlIO_save_errno(f); | |
2745 | } | |
2746 | } | |
2747 | else if (len == 0 && count != 0) { | |
2748 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
2749 | SETERRNO(0,0); | |
2750 | } | |
2751 | return len; | |
2752 | } | |
2753 | /* EINTR */ | |
2754 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2755 | return -1; | |
14a5cf38 | 2756 | } |
e5964223 | 2757 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2758 | } |
2759 | ||
2760 | SSize_t | |
f62ce20a | 2761 | PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 2762 | { |
abf9167d DM |
2763 | int fd; |
2764 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ | |
1604cfb0 | 2765 | return -1; |
abf9167d | 2766 | fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2767 | while (1) { |
1604cfb0 MS |
2768 | const SSize_t len = PerlLIO_write(fd, vbuf, count); |
2769 | if (len >= 0 || errno != EINTR) { | |
2770 | if (len < 0) { | |
2771 | if (errno != EAGAIN) { | |
2772 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
2773 | PerlIO_save_errno(f); | |
2774 | } | |
2775 | } | |
2776 | return len; | |
2777 | } | |
2778 | /* EINTR */ | |
2779 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2780 | return -1; | |
06da4f11 | 2781 | } |
e5964223 | 2782 | NOT_REACHED; /*NOTREACHED*/ |
9e353e3b NIS |
2783 | } |
2784 | ||
9e353e3b | 2785 | Off_t |
f62ce20a | 2786 | PerlIOUnix_tell(pTHX_ PerlIO *f) |
9e353e3b | 2787 | { |
96a5add6 AL |
2788 | PERL_UNUSED_CONTEXT; |
2789 | ||
14a5cf38 | 2790 | return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); |
9e353e3b NIS |
2791 | } |
2792 | ||
2556f95e GF |
2793 | |
2794 | IV | |
2376d97d | 2795 | PerlIOUnix_close(pTHX_ PerlIO *f) |
2556f95e | 2796 | { |
de009b76 | 2797 | const int fd = PerlIOSelf(f, PerlIOUnix)->fd; |
14a5cf38 | 2798 | int code = 0; |
168d5872 | 2799 | if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { |
d55a1461 | 2800 | code = PerlIOBase_close(aTHX_ f); |
1604cfb0 MS |
2801 | if (PerlIOUnix_refcnt_dec(fd) > 0) { |
2802 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; | |
2803 | return 0; | |
2804 | } | |
93a8090d NIS |
2805 | } |
2806 | else { | |
1604cfb0 MS |
2807 | SETERRNO(EBADF,SS_IVCHAN); |
2808 | return -1; | |
93a8090d | 2809 | } |
14a5cf38 | 2810 | while (PerlLIO_close(fd) != 0) { |
1604cfb0 MS |
2811 | if (errno != EINTR) { |
2812 | code = -1; | |
2813 | break; | |
2814 | } | |
2815 | /* EINTR */ | |
2816 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
2817 | return -1; | |
14a5cf38 JH |
2818 | } |
2819 | if (code == 0) { | |
1604cfb0 | 2820 | PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; |
14a5cf38 JH |
2821 | } |
2822 | return code; | |
9e353e3b NIS |
2823 | } |
2824 | ||
27da23d5 | 2825 | PERLIO_FUNCS_DECL(PerlIO_unix) = { |
2dc2558e | 2826 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
2827 | "unix", |
2828 | sizeof(PerlIOUnix), | |
2829 | PERLIO_K_RAW, | |
2830 | PerlIOUnix_pushed, | |
2376d97d | 2831 | PerlIOBase_popped, |
14a5cf38 | 2832 | PerlIOUnix_open, |
86e05cf2 | 2833 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
2834 | NULL, |
2835 | PerlIOUnix_fileno, | |
71200d45 | 2836 | PerlIOUnix_dup, |
14a5cf38 JH |
2837 | PerlIOUnix_read, |
2838 | PerlIOBase_unread, | |
2839 | PerlIOUnix_write, | |
2840 | PerlIOUnix_seek, | |
2841 | PerlIOUnix_tell, | |
2842 | PerlIOUnix_close, | |
22569500 NIS |
2843 | PerlIOBase_noop_ok, /* flush */ |
2844 | PerlIOBase_noop_fail, /* fill */ | |
14a5cf38 JH |
2845 | PerlIOBase_eof, |
2846 | PerlIOBase_error, | |
2847 | PerlIOBase_clearerr, | |
2848 | PerlIOBase_setlinebuf, | |
22569500 NIS |
2849 | NULL, /* get_base */ |
2850 | NULL, /* get_bufsiz */ | |
2851 | NULL, /* get_ptr */ | |
2852 | NULL, /* get_cnt */ | |
2853 | NULL, /* set_ptrcnt */ | |
9e353e3b NIS |
2854 | }; |
2855 | ||
2856 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 2857 | /* |
71200d45 | 2858 | * stdio as a layer |
14a5cf38 | 2859 | */ |
9e353e3b | 2860 | |
313e59c8 NIS |
2861 | #if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) |
2862 | /* perl5.8 - This ensures the last minute VMS ungetc fix is not | |
2863 | broken by the last second glibc 2.3 fix | |
2864 | */ | |
d0e4ea4d | 2865 | # define STDIO_BUFFER_WRITABLE |
313e59c8 NIS |
2866 | #endif |
2867 | ||
2868 | ||
14a5cf38 JH |
2869 | typedef struct { |
2870 | struct _PerlIO base; | |
22569500 | 2871 | FILE *stdio; /* The stream */ |
9e353e3b NIS |
2872 | } PerlIOStdio; |
2873 | ||
2874 | IV | |
f62ce20a | 2875 | PerlIOStdio_fileno(pTHX_ PerlIO *f) |
9e353e3b | 2876 | { |
96a5add6 AL |
2877 | PERL_UNUSED_CONTEXT; |
2878 | ||
c4420975 | 2879 | if (PerlIOValid(f)) { |
1604cfb0 MS |
2880 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
2881 | if (s) | |
2882 | return PerlSIO_fileno(s); | |
439ba545 NIS |
2883 | } |
2884 | errno = EBADF; | |
2885 | return -1; | |
9e353e3b NIS |
2886 | } |
2887 | ||
766a733e | 2888 | char * |
14a5cf38 JH |
2889 | PerlIOStdio_mode(const char *mode, char *tmode) |
2890 | { | |
de009b76 | 2891 | char * const ret = tmode; |
a0625d38 | 2892 | if (mode) { |
1604cfb0 MS |
2893 | while (*mode) { |
2894 | *tmode++ = *mode++; | |
2895 | } | |
14a5cf38 | 2896 | } |
95005ad8 | 2897 | #if defined(PERLIO_USING_CRLF) || defined(__CYGWIN__) |
6ce75a77 JH |
2898 | *tmode++ = 'b'; |
2899 | #endif | |
14a5cf38 JH |
2900 | *tmode = '\0'; |
2901 | return ret; | |
2902 | } | |
2903 | ||
4b803d04 | 2904 | IV |
2dc2558e | 2905 | PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
4b803d04 | 2906 | { |
1fd8f4ce NIS |
2907 | PerlIO *n; |
2908 | if (PerlIOValid(f) && PerlIOValid(n = PerlIONext(f))) { | |
1604cfb0 | 2909 | PerlIO_funcs * const toptab = PerlIOBase(n)->tab; |
1fd8f4ce | 2910 | if (toptab == tab) { |
1604cfb0 MS |
2911 | /* Top is already stdio - pop self (duplicate) and use original */ |
2912 | PerlIO_pop(aTHX_ f); | |
2913 | return 0; | |
2914 | } else { | |
2915 | const int fd = PerlIO_fileno(n); | |
2916 | char tmode[8]; | |
2917 | FILE *stdio; | |
2918 | if (fd >= 0 && (stdio = PerlSIO_fdopen(fd, | |
2919 | mode = PerlIOStdio_mode(mode, tmode)))) { | |
2920 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
2921 | /* We never call down so do any pending stuff now */ | |
2922 | PerlIO_flush(PerlIONext(f)); | |
2a600bb8 | 2923 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
1604cfb0 MS |
2924 | } |
2925 | else { | |
2926 | return -1; | |
2927 | } | |
1fd8f4ce | 2928 | } |
14a5cf38 | 2929 | } |
2dc2558e | 2930 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
4b803d04 NIS |
2931 | } |
2932 | ||
22569500 | 2933 | |
9e353e3b | 2934 | PerlIO * |
4b069b44 | 2935 | PerlIO_importFILE(FILE *stdio, const char *mode) |
9e353e3b | 2936 | { |
14a5cf38 JH |
2937 | dTHX; |
2938 | PerlIO *f = NULL; | |
31e7fc23 | 2939 | #ifdef __MVS__ |
1604cfb0 MS |
2940 | int rc; |
2941 | char filename[FILENAME_MAX]; | |
2942 | fldata_t fileinfo; | |
ea5bc90f | 2943 | #endif |
14a5cf38 | 2944 | if (stdio) { |
1604cfb0 | 2945 | PerlIOStdio *s; |
375ed12a JH |
2946 | int fd0 = fileno(stdio); |
2947 | if (fd0 < 0) { | |
31e7fc23 | 2948 | #ifdef __MVS__ |
1604cfb0 MS |
2949 | rc = fldata(stdio,filename,&fileinfo); |
2950 | if(rc != 0){ | |
2951 | return NULL; | |
2952 | } | |
2953 | if(fileinfo.__dsorgHFS){ | |
ea5bc90f YK |
2954 | return NULL; |
2955 | } | |
1604cfb0 | 2956 | /*This MVS dataset , OK!*/ |
ea5bc90f | 2957 | #else |
375ed12a | 2958 | return NULL; |
ea5bc90f | 2959 | #endif |
375ed12a | 2960 | } |
1604cfb0 MS |
2961 | if (!mode || !*mode) { |
2962 | /* We need to probe to see how we can open the stream | |
2963 | so start with read/write and then try write and read | |
2964 | we dup() so that we can fclose without loosing the fd. | |
2965 | ||
2966 | Note that the errno value set by a failing fdopen | |
2967 | varies between stdio implementations. | |
2968 | */ | |
884fc2d3 | 2969 | const int fd = PerlLIO_dup_cloexec(fd0); |
1604cfb0 | 2970 | FILE *f2; |
375ed12a JH |
2971 | if (fd < 0) { |
2972 | return f; | |
2973 | } | |
1604cfb0 MS |
2974 | f2 = PerlSIO_fdopen(fd, (mode = "r+")); |
2975 | if (!f2) { | |
2976 | f2 = PerlSIO_fdopen(fd, (mode = "w")); | |
2977 | } | |
2978 | if (!f2) { | |
2979 | f2 = PerlSIO_fdopen(fd, (mode = "r")); | |
2980 | } | |
2981 | if (!f2) { | |
2982 | /* Don't seem to be able to open */ | |
2983 | PerlLIO_close(fd); | |
2984 | return f; | |
2985 | } | |
2986 | fclose(f2); | |
2987 | } | |
2988 | if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) { | |
2989 | s = PerlIOSelf(f, PerlIOStdio); | |
2990 | s->stdio = stdio; | |
2991 | fd0 = fileno(stdio); | |
2992 | if(fd0 != -1){ | |
2993 | PerlIOUnix_refcnt_inc(fd0); | |
2994 | setfd_cloexec_or_inhexec_by_sysfdness(fd0); | |
2995 | } | |
31e7fc23 | 2996 | #ifdef __MVS__ |
1604cfb0 MS |
2997 | else{ |
2998 | rc = fldata(stdio,filename,&fileinfo); | |
2999 | if(rc != 0){ | |
3000 | PerlIOUnix_refcnt_inc(fd0); | |
3001 | } | |
3002 | if(fileinfo.__dsorgHFS){ | |
3003 | PerlIOUnix_refcnt_inc(fd0); | |
3004 | } | |
3005 | /*This MVS dataset , OK!*/ | |
3006 | } | |
ea5bc90f | 3007 | #endif |
1604cfb0 | 3008 | } |
14a5cf38 JH |
3009 | } |
3010 | return f; | |
9e353e3b NIS |
3011 | } |
3012 | ||
3013 | PerlIO * | |
14a5cf38 | 3014 | PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1604cfb0 MS |
3015 | IV n, const char *mode, int fd, int imode, |
3016 | int perm, PerlIO *f, int narg, SV **args) | |
14a5cf38 JH |
3017 | { |
3018 | char tmode[8]; | |
d9dac8cd | 3019 | if (PerlIOValid(f)) { |
41188aa0 | 3020 | STRLEN len; |
1604cfb0 MS |
3021 | const char * const path = SvPV_const(*args, len); |
3022 | PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio); | |
3023 | FILE *stdio; | |
3024 | if (!IS_SAFE_PATHNAME(path, len, "open")) | |
c8028aa6 | 3025 | return NULL; |
1604cfb0 MS |
3026 | PerlIOUnix_refcnt_dec(fileno(s->stdio)); |
3027 | stdio = PerlSIO_freopen(path, PerlIOStdio_mode(mode, tmode), | |
de092133 | 3028 | s->stdio); |
1604cfb0 MS |
3029 | if (!s->stdio) |
3030 | return NULL; | |
3031 | s->stdio = stdio; | |
3032 | fd = fileno(stdio); | |
3033 | PerlIOUnix_refcnt_inc(fd); | |
3034 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
3035 | return f; | |
14a5cf38 JH |
3036 | } |
3037 | else { | |
1604cfb0 | 3038 | if (narg > 0) { |
41188aa0 | 3039 | STRLEN len; |
1604cfb0 | 3040 | const char * const path = SvPV_const(*args, len); |
41188aa0 | 3041 | if (!IS_SAFE_PATHNAME(path, len, "open")) |
c8028aa6 | 3042 | return NULL; |
1604cfb0 MS |
3043 | if (*mode == IoTYPE_NUMERIC) { |
3044 | mode++; | |
3045 | fd = PerlLIO_open3_cloexec(path, imode, perm); | |
3046 | } | |
3047 | else { | |
3048 | FILE *stdio; | |
3049 | bool appended = FALSE; | |
95005ad8 | 3050 | #ifdef __CYGWIN__ |
1604cfb0 MS |
3051 | /* Cygwin wants its 'b' early. */ |
3052 | appended = TRUE; | |
3053 | mode = PerlIOStdio_mode(mode, tmode); | |
95005ad8 | 3054 | #endif |
1604cfb0 MS |
3055 | stdio = PerlSIO_fopen(path, mode); |
3056 | if (stdio) { | |
3057 | if (!f) { | |
3058 | f = PerlIO_allocate(aTHX); | |
3059 | } | |
3060 | if (!appended) | |
3061 | mode = PerlIOStdio_mode(mode, tmode); | |
3062 | f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg); | |
3063 | if (f) { | |
3064 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
3065 | fd = fileno(stdio); | |
3066 | PerlIOUnix_refcnt_inc(fd); | |
3067 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
3068 | } else { | |
3069 | PerlSIO_fclose(stdio); | |
3070 | } | |
3071 | return f; | |
3072 | } | |
3073 | else { | |
3074 | return NULL; | |
3075 | } | |
3076 | } | |
3077 | } | |
3078 | if (fd >= 0) { | |
3079 | FILE *stdio = NULL; | |
3080 | int init = 0; | |
3081 | if (*mode == IoTYPE_IMPLICIT) { | |
3082 | init = 1; | |
3083 | mode++; | |
3084 | } | |
3085 | if (init) { | |
3086 | switch (fd) { | |
3087 | case 0: | |
3088 | stdio = PerlSIO_stdin; | |
3089 | break; | |
3090 | case 1: | |
3091 | stdio = PerlSIO_stdout; | |
3092 | break; | |
3093 | case 2: | |
3094 | stdio = PerlSIO_stderr; | |
3095 | break; | |
3096 | } | |
3097 | } | |
3098 | else { | |
3099 | stdio = PerlSIO_fdopen(fd, mode = | |
3100 | PerlIOStdio_mode(mode, tmode)); | |
3101 | } | |
3102 | if (stdio) { | |
3103 | if (!f) { | |
3104 | f = PerlIO_allocate(aTHX); | |
3105 | } | |
3106 | if ((f = PerlIO_push(aTHX_ f, self, mode, PerlIOArg))) { | |
3107 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; | |
3108 | fd = fileno(stdio); | |
3109 | PerlIOUnix_refcnt_inc(fd); | |
3110 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
3111 | } | |
3112 | return f; | |
3113 | } | |
0a20f69b | 3114 | PerlLIO_close(fd); |
1604cfb0 | 3115 | } |
14a5cf38 | 3116 | } |
ee518936 | 3117 | return NULL; |
9e353e3b NIS |
3118 | } |
3119 | ||
1751d015 | 3120 | PerlIO * |
ecdeb87c | 3121 | PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
1751d015 NIS |
3122 | { |
3123 | /* This assumes no layers underneath - which is what | |
3124 | happens, but is not how I remember it. NI-S 2001/10/16 | |
3125 | */ | |
ecdeb87c | 3126 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
1604cfb0 MS |
3127 | FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; |
3128 | const int fd = fileno(stdio); | |
3129 | char mode[8]; | |
3130 | if (flags & PERLIO_DUP_FD) { | |
3131 | const int dfd = PerlLIO_dup_cloexec(fileno(stdio)); | |
3132 | if (dfd >= 0) { | |
3133 | stdio = PerlSIO_fdopen(dfd, PerlIO_modestr(o,mode)); | |
3134 | goto set_this; | |
3135 | } | |
3136 | else { | |
3137 | NOOP; | |
3138 | /* FIXME: To avoid messy error recovery if dup fails | |
3139 | re-use the existing stdio as though flag was not set | |
3140 | */ | |
3141 | } | |
3142 | } | |
3143 | stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o,mode)); | |
9217ff3f | 3144 | set_this: |
1604cfb0 | 3145 | PerlIOSelf(f, PerlIOStdio)->stdio = stdio; |
40596bc5 | 3146 | if(stdio) { |
1604cfb0 MS |
3147 | int fd = fileno(stdio); |
3148 | PerlIOUnix_refcnt_inc(fd); | |
3149 | setfd_cloexec_or_inhexec_by_sysfdness(fd); | |
40596bc5 | 3150 | } |
1751d015 NIS |
3151 | } |
3152 | return f; | |
3153 | } | |
3154 | ||
0d7a5398 NIS |
3155 | static int |
3156 | PerlIOStdio_invalidate_fileno(pTHX_ FILE *f) | |
3157 | { | |
96a5add6 AL |
3158 | PERL_UNUSED_CONTEXT; |
3159 | ||
0d7a5398 | 3160 | /* XXX this could use PerlIO_canset_fileno() and |
37725cdc | 3161 | * PerlIO_set_fileno() support from Configure |
0d7a5398 | 3162 | */ |
d0e4ea4d | 3163 | #if defined(HAS_FDCLOSE) |
36b1c892 | 3164 | return fdclose(f, NULL) == 0 ? 1 : 0; |
d0e4ea4d | 3165 | #elif defined(__UCLIBC__) |
ef8eacb8 AT |
3166 | /* uClibc must come before glibc because it defines __GLIBC__ as well. */ |
3167 | f->__filedes = -1; | |
3168 | return 1; | |
d0e4ea4d | 3169 | #elif defined(__GLIBC__) |
0d7a5398 | 3170 | /* There may be a better way for GLIBC: |
1604cfb0 | 3171 | - libio.h defines a flag to not close() on cleanup |
0d7a5398 NIS |
3172 | */ |
3173 | f->_fileno = -1; | |
3174 | return 1; | |
d0e4ea4d | 3175 | #elif defined(__sun) |
f5992bc4 | 3176 | PERL_UNUSED_ARG(f); |
cfedb851 | 3177 | return 0; |
d0e4ea4d | 3178 | #elif defined(__hpux) |
0d7a5398 NIS |
3179 | f->__fileH = 0xff; |
3180 | f->__fileL = 0xff; | |
3181 | return 1; | |
9837d373 | 3182 | /* Next one ->_file seems to be a reasonable fallback, i.e. if |
37725cdc | 3183 | your platform does not have special entry try this one. |
9837d373 NIS |
3184 | [For OSF only have confirmation for Tru64 (alpha) |
3185 | but assume other OSFs will be similar.] | |
37725cdc | 3186 | */ |
d0e4ea4d | 3187 | #elif defined(_AIX) || defined(__osf__) || defined(__irix__) |
0d7a5398 NIS |
3188 | f->_file = -1; |
3189 | return 1; | |
d0e4ea4d | 3190 | #elif defined(__FreeBSD__) |
0d7a5398 | 3191 | /* There may be a better way on FreeBSD: |
37725cdc | 3192 | - we could insert a dummy func in the _close function entry |
1604cfb0 | 3193 | f->_close = (int (*)(void *)) dummy_close; |
0d7a5398 NIS |
3194 | */ |
3195 | f->_file = -1; | |
0c49ea6a | 3196 | return 1; |
d0e4ea4d | 3197 | #elif defined(__OpenBSD__) |
0c49ea6a SU |
3198 | /* There may be a better way on OpenBSD: |
3199 | - we could insert a dummy func in the _close function entry | |
1604cfb0 | 3200 | f->_close = (int (*)(void *)) dummy_close; |
0c49ea6a SU |
3201 | */ |
3202 | f->_file = -1; | |
0d7a5398 | 3203 | return 1; |
d0e4ea4d | 3204 | #elif defined(__EMX__) |
59ad941d IZ |
3205 | /* f->_flags &= ~_IOOPEN; */ /* Will leak stream->_buffer */ |
3206 | f->_handle = -1; | |
3207 | return 1; | |
d0e4ea4d | 3208 | #elif defined(__CYGWIN__) |
0d7a5398 | 3209 | /* There may be a better way on CYGWIN: |
37725cdc | 3210 | - we could insert a dummy func in the _close function entry |
1604cfb0 | 3211 | f->_close = (int (*)(void *)) dummy_close; |
0d7a5398 NIS |
3212 | */ |
3213 | f->_file = -1; | |
3214 | return 1; | |
d0e4ea4d | 3215 | #elif defined(WIN32) |
1f664ef5 | 3216 | PERLIO_FILE_file(f) = -1; |
0d7a5398 | 3217 | return 1; |
d0e4ea4d KW |
3218 | #else |
3219 | # if 0 | |
37725cdc | 3220 | /* Sarathy's code did this - we fall back to a dup/dup2 hack |
0d7a5398 | 3221 | (which isn't thread safe) instead |
37725cdc | 3222 | */ |
0d7a5398 | 3223 | # error "Don't know how to set FILE.fileno on your platform" |
d0e4ea4d | 3224 | # endif |
8772537c | 3225 | PERL_UNUSED_ARG(f); |
0d7a5398 | 3226 | return 0; |
d0e4ea4d | 3227 | #endif |
0d7a5398 NIS |
3228 | } |
3229 | ||
1751d015 | 3230 | IV |
f62ce20a | 3231 | PerlIOStdio_close(pTHX_ PerlIO *f) |
1751d015 | 3232 | { |
c4420975 | 3233 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
439ba545 | 3234 | if (!stdio) { |
1604cfb0 MS |
3235 | errno = EBADF; |
3236 | return -1; | |
439ba545 | 3237 | } |
9217ff3f | 3238 | else { |
de009b76 | 3239 | const int fd = fileno(stdio); |
1604cfb0 MS |
3240 | int invalidate = 0; |
3241 | IV result = 0; | |
3242 | int dupfd = -1; | |
3243 | dSAVEDERRNO; | |
0d7a5398 | 3244 | #ifdef SOCKS5_VERSION_NAME |
1604cfb0 MS |
3245 | /* Socks lib overrides close() but stdio isn't linked to |
3246 | that library (though we are) - so we must call close() | |
3247 | on sockets on stdio's behalf. | |
3248 | */ | |
3249 | int optval; | |
3250 | Sock_size_t optlen = sizeof(int); | |
3251 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (void *) &optval, &optlen) == 0) | |
3252 | invalidate = 1; | |
0d7a5398 | 3253 | #endif |
1604cfb0 MS |
3254 | /* Test for -1, as *BSD stdio (at least) on fclose sets the FILE* such |
3255 | that a subsequent fileno() on it returns -1. Don't want to croak() | |
3256 | from within PerlIOUnix_refcnt_dec() if some buggy caller code is | |
3257 | trying to close an already closed handle which somehow it still has | |
3258 | a reference to. (via.xs, I'm looking at you). */ | |
3259 | if (fd != -1 && PerlIOUnix_refcnt_dec(fd) > 0) { | |
3260 | /* File descriptor still in use */ | |
3261 | invalidate = 1; | |
3262 | } | |
3263 | if (invalidate) { | |
3264 | /* For STD* handles, don't close stdio, since we shared the FILE *, too. */ | |
3265 | if (stdio == stdin) /* Some stdios are buggy fflush-ing inputs */ | |
3266 | return 0; | |
3267 | if (stdio == stdout || stdio == stderr) | |
3268 | return PerlIO_flush(f); | |
d88f7f65 | 3269 | } |
d88f7f65 JH |
3270 | MUTEX_LOCK(&PL_perlio_mutex); |
3271 | /* Right. We need a mutex here because for a brief while we | |
3272 | will have the situation that fd is actually closed. Hence if | |
3273 | a second thread were to get into this block, its dup() would | |
3274 | likely return our fd as its dupfd. (after all, it is closed) | |
3275 | Then if we get to the dup2() first, we blat the fd back | |
3276 | (messing up its temporary as a side effect) only for it to | |
3277 | then close its dupfd (== our fd) in its close(dupfd) */ | |
3278 | ||
3279 | /* There is, of course, a race condition, that any other thread | |
3280 | trying to input/output/whatever on this fd will be stuffed | |
3281 | for the duration of this little manoeuvrer. Perhaps we | |
3282 | should hold an IO mutex for the duration of every IO | |
3283 | operation if we know that invalidate doesn't work on this | |
3284 | platform, but that would suck, and could kill performance. | |
3285 | ||
3286 | Except that correctness trumps speed. | |
3287 | Advice from klortho #11912. */ | |
1604cfb0 | 3288 | if (invalidate) { |
37725cdc | 3289 | /* Tricky - must fclose(stdio) to free memory but not close(fd) |
1604cfb0 MS |
3290 | Use Sarathy's trick from maint-5.6 to invalidate the |
3291 | fileno slot of the FILE * | |
3292 | */ | |
3293 | result = PerlIO_flush(f); | |
3294 | SAVE_ERRNO; | |
3295 | invalidate = PerlIOStdio_invalidate_fileno(aTHX_ stdio); | |
3296 | if (!invalidate) { | |
3297 | dupfd = PerlLIO_dup_cloexec(fd); | |
711e8db2 | 3298 | #ifdef USE_ITHREADS |
1604cfb0 MS |
3299 | if (dupfd < 0) { |
3300 | /* Oh cXap. This isn't going to go well. Not sure if we can | |
3301 | recover from here, or if closing this particular FILE * | |
3302 | is a good idea now. */ | |
3303 | } | |
711e8db2 | 3304 | #endif |
1604cfb0 MS |
3305 | } |
3306 | } else { | |
3307 | SAVE_ERRNO; /* This is here only to silence compiler warnings */ | |
3308 | } | |
0d7a5398 | 3309 | result = PerlSIO_fclose(stdio); |
1604cfb0 MS |
3310 | /* We treat error from stdio as success if we invalidated |
3311 | errno may NOT be expected EBADF | |
3312 | */ | |
3313 | if (invalidate && result != 0) { | |
3314 | RESTORE_ERRNO; | |
3315 | result = 0; | |
3316 | } | |
6b4ce6c8 | 3317 | #ifdef SOCKS5_VERSION_NAME |
1604cfb0 MS |
3318 | /* in SOCKS' case, let close() determine return value */ |
3319 | result = close(fd); | |
6b4ce6c8 | 3320 | #endif |
1604cfb0 MS |
3321 | if (dupfd >= 0) { |
3322 | PerlLIO_dup2_cloexec(dupfd, fd); | |
3323 | setfd_inhexec_for_sysfd(fd); | |
3324 | PerlLIO_close(dupfd); | |
3325 | } | |
d88f7f65 | 3326 | MUTEX_UNLOCK(&PL_perlio_mutex); |
1604cfb0 | 3327 | return result; |
37725cdc | 3328 | } |
1751d015 NIS |
3329 | } |
3330 | ||
9e353e3b | 3331 | SSize_t |
f62ce20a | 3332 | PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
9e353e3b | 3333 | { |
abf9167d | 3334 | FILE * s; |
14a5cf38 | 3335 | SSize_t got = 0; |
abf9167d | 3336 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
1604cfb0 | 3337 | return -1; |
abf9167d | 3338 | s = PerlIOSelf(f, PerlIOStdio)->stdio; |
4d948241 | 3339 | for (;;) { |
1604cfb0 MS |
3340 | if (count == 1) { |
3341 | STDCHAR *buf = (STDCHAR *) vbuf; | |
3342 | /* | |
3343 | * Perl is expecting PerlIO_getc() to fill the buffer Linux's | |
3344 | * stdio does not do that for fread() | |
3345 | */ | |
3346 | const int ch = PerlSIO_fgetc(s); | |
3347 | if (ch != EOF) { | |
3348 | *buf = ch; | |
3349 | got = 1; | |
3350 | } | |
3351 | } | |
3352 | else | |
3353 | got = PerlSIO_fread(vbuf, 1, count, s); | |
3354 | if (got == 0 && PerlSIO_ferror(s)) | |
3355 | got = -1; | |
3356 | if (got >= 0 || errno != EINTR) | |
3357 | break; | |
3358 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
3359 | return -1; | |
3360 | SETERRNO(0,0); /* just in case */ | |
14a5cf38 | 3361 | } |
bdae4172 JH |
3362 | #ifdef __sgi |
3363 | /* Under some circumstances IRIX stdio fgetc() and fread() | |
3364 | * set the errno to ENOENT, which makes no sense according | |
3365 | * to either IRIX or POSIX. [rt.perl.org #123977] */ | |
3366 | if (errno == ENOENT) SETERRNO(0,0); | |
3367 | #endif | |
14a5cf38 | 3368 | return got; |
9e353e3b NIS |
3369 | } |
3370 | ||
3371 | SSize_t | |
f62ce20a | 3372 | PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3373 | { |
14a5cf38 | 3374 | SSize_t unread = 0; |
c4420975 | 3375 | FILE * const s = PerlIOSelf(f, PerlIOStdio)->stdio; |
93679785 | 3376 | |
313e59c8 | 3377 | #ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3378 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
1604cfb0 MS |
3379 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; |
3380 | STDCHAR *base = PerlIO_get_base(f); | |
3381 | SSize_t cnt = PerlIO_get_cnt(f); | |
3382 | STDCHAR *ptr = PerlIO_get_ptr(f); | |
3383 | SSize_t avail = ptr - base; | |
3384 | if (avail > 0) { | |
3385 | if (avail > count) { | |
3386 | avail = count; | |
3387 | } | |
3388 | ptr -= avail; | |
3389 | Move(buf-avail,ptr,avail,STDCHAR); | |
3390 | count -= avail; | |
3391 | unread += avail; | |
3392 | PerlIO_set_ptrcnt(f,ptr,cnt+avail); | |
3393 | if (PerlSIO_feof(s) && unread >= 0) | |
3394 | PerlSIO_clearerr(s); | |
3395 | } | |
9f7cd136 | 3396 | } |
313e59c8 NIS |
3397 | else |
3398 | #endif | |
3399 | if (PerlIO_has_cntptr(f)) { | |
1604cfb0 MS |
3400 | /* We can get pointer to buffer but not its base |
3401 | Do ungetc() but check chars are ending up in the | |
3402 | buffer | |
3403 | */ | |
3404 | STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); | |
3405 | STDCHAR *buf = ((STDCHAR *) vbuf) + count; | |
3406 | while (count > 0) { | |
8fec2c71 | 3407 | const int ch = (U8) *--buf; |
1604cfb0 MS |
3408 | if (ungetc(ch,s) != ch) { |
3409 | /* ungetc did not work */ | |
3410 | break; | |
3411 | } | |
8fec2c71 | 3412 | if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || (((U8) *eptr) != ch)) { |
1604cfb0 MS |
3413 | /* Did not change pointer as expected */ |
3414 | if (fgetc(s) != EOF) /* get char back again */ | |
375ed12a | 3415 | break; |
1604cfb0 MS |
3416 | } |
3417 | /* It worked ! */ | |
3418 | count--; | |
3419 | unread++; | |
3420 | } | |
93679785 NIS |
3421 | } |
3422 | ||
3423 | if (count > 0) { | |
1604cfb0 | 3424 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); |
14a5cf38 JH |
3425 | } |
3426 | return unread; | |
9e353e3b NIS |
3427 | } |
3428 | ||
3429 | SSize_t | |
f62ce20a | 3430 | PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
9e353e3b | 3431 | { |
4d948241 | 3432 | SSize_t got; |
abf9167d | 3433 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
1604cfb0 | 3434 | return -1; |
4d948241 | 3435 | for (;;) { |
1604cfb0 MS |
3436 | got = PerlSIO_fwrite(vbuf, 1, count, |
3437 | PerlIOSelf(f, PerlIOStdio)->stdio); | |
3438 | if (got >= 0 || errno != EINTR) | |
3439 | break; | |
3440 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
3441 | return -1; | |
3442 | SETERRNO(0,0); /* just in case */ | |
4d948241 NIS |
3443 | } |
3444 | return got; | |
9e353e3b NIS |
3445 | } |
3446 | ||
94a175e1 | 3447 | IV |
f62ce20a | 3448 | PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 3449 | { |
c4420975 | 3450 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3451 | PERL_UNUSED_CONTEXT; |
3452 | ||
94a175e1 | 3453 | return PerlSIO_fseek(stdio, offset, whence); |
9e353e3b NIS |
3454 | } |
3455 | ||
3456 | Off_t | |
f62ce20a | 3457 | PerlIOStdio_tell(pTHX_ PerlIO *f) |
9e353e3b | 3458 | { |
c4420975 | 3459 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3460 | PERL_UNUSED_CONTEXT; |
3461 | ||
94a175e1 | 3462 | return PerlSIO_ftell(stdio); |
9e353e3b NIS |
3463 | } |
3464 | ||
3465 | IV | |
f62ce20a | 3466 | PerlIOStdio_flush(pTHX_ PerlIO *f) |
9e353e3b | 3467 | { |
c4420975 | 3468 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 AL |
3469 | PERL_UNUSED_CONTEXT; |
3470 | ||
14a5cf38 | 3471 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
1604cfb0 | 3472 | return PerlSIO_fflush(stdio); |
14a5cf38 JH |
3473 | } |
3474 | else { | |
1604cfb0 | 3475 | NOOP; |
88b61e10 | 3476 | #if 0 |
1604cfb0 MS |
3477 | /* |
3478 | * FIXME: This discards ungetc() and pre-read stuff which is not | |
3479 | * right if this is just a "sync" from a layer above Suspect right | |
3480 | * design is to do _this_ but not have layer above flush this | |
3481 | * layer read-to-read | |
3482 | */ | |
3483 | /* | |
3484 | * Not writeable - sync by attempting a seek | |
3485 | */ | |
3486 | dSAVE_ERRNO; | |
3487 | if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) | |
3488 | RESTORE_ERRNO; | |
88b61e10 | 3489 | #endif |
14a5cf38 JH |
3490 | } |
3491 | return 0; | |
9e353e3b NIS |
3492 | } |
3493 | ||
3494 | IV | |
f62ce20a | 3495 | PerlIOStdio_eof(pTHX_ PerlIO *f) |
9e353e3b | 3496 | { |
96a5add6 AL |
3497 | PERL_UNUSED_CONTEXT; |
3498 | ||
14a5cf38 | 3499 | return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3500 | } |
3501 | ||
3502 | IV | |
f62ce20a | 3503 | PerlIOStdio_error(pTHX_ PerlIO *f) |
9e353e3b | 3504 | { |
96a5add6 AL |
3505 | PERL_UNUSED_CONTEXT; |
3506 | ||
263df5f1 | 3507 | return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3508 | } |
3509 | ||
3510 | void | |
f62ce20a | 3511 | PerlIOStdio_clearerr(pTHX_ PerlIO *f) |
9e353e3b | 3512 | { |
96a5add6 AL |
3513 | PERL_UNUSED_CONTEXT; |
3514 | ||
14a5cf38 | 3515 | PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b NIS |
3516 | } |
3517 | ||
3518 | void | |
f62ce20a | 3519 | PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) |
9e353e3b | 3520 | { |
96a5add6 AL |
3521 | PERL_UNUSED_CONTEXT; |
3522 | ||
9e353e3b | 3523 | #ifdef HAS_SETLINEBUF |
14a5cf38 | 3524 | PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); |
9e353e3b | 3525 | #else |
bd61b366 | 3526 | PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, NULL, _IOLBF, 0); |
9e353e3b NIS |
3527 | #endif |
3528 | } | |
3529 | ||
3530 | #ifdef FILE_base | |
3531 | STDCHAR * | |
f62ce20a | 3532 | PerlIOStdio_get_base(pTHX_ PerlIO *f) |
9e353e3b | 3533 | { |
c4420975 | 3534 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3535 | PERL_UNUSED_CONTEXT; |
cc00df79 | 3536 | return (STDCHAR*)PerlSIO_get_base(stdio); |
9e353e3b NIS |
3537 | } |
3538 | ||
3539 | Size_t | |
f62ce20a | 3540 | PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 3541 | { |
c4420975 | 3542 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3543 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 3544 | return PerlSIO_get_bufsiz(stdio); |
9e353e3b NIS |
3545 | } |
3546 | #endif | |
3547 | ||
3548 | #ifdef USE_STDIO_PTR | |
3549 | STDCHAR * | |
f62ce20a | 3550 | PerlIOStdio_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 3551 | { |
c4420975 | 3552 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3553 | PERL_UNUSED_CONTEXT; |
cc00df79 | 3554 | return (STDCHAR*)PerlSIO_get_ptr(stdio); |
9e353e3b NIS |
3555 | } |
3556 | ||
3557 | SSize_t | |
f62ce20a | 3558 | PerlIOStdio_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 3559 | { |
c4420975 | 3560 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3561 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 3562 | return PerlSIO_get_cnt(stdio); |
9e353e3b NIS |
3563 | } |
3564 | ||
3565 | void | |
f62ce20a | 3566 | PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 3567 | { |
c4420975 | 3568 | FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
e9b8343f | 3569 | PERL_UNUSED_CONTEXT; |
14a5cf38 | 3570 | if (ptr != NULL) { |
d0e4ea4d | 3571 | # ifdef STDIO_PTR_LVALUE |
46f05249 JH |
3572 | /* This is a long-standing infamous mess. The root of the |
3573 | * problem is that one cannot know the signedness of char, and | |
3574 | * more precisely the signedness of FILE._ptr. The following | |
3575 | * things have been tried, and they have all failed (across | |
3576 | * different compilers (remember that core needs to to build | |
3577 | * also with c++) and compiler options: | |
3578 | * | |
3579 | * - casting the RHS to (void*) -- works in *some* places | |
3580 | * - casting the LHS to (void*) -- totally unportable | |
3581 | * | |
3582 | * So let's try silencing the warning at least for gcc. */ | |
7347ee54 | 3583 | GCC_DIAG_IGNORE_STMT(-Wpointer-sign); |
1604cfb0 | 3584 | PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */ |
7347ee54 | 3585 | GCC_DIAG_RESTORE_STMT; |
d0e4ea4d | 3586 | # ifdef STDIO_PTR_LVAL_SETS_CNT |
1604cfb0 | 3587 | assert(PerlSIO_get_cnt(stdio) == (cnt)); |
d0e4ea4d KW |
3588 | # endif |
3589 | # if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) | |
1604cfb0 MS |
3590 | /* |
3591 | * Setting ptr _does_ change cnt - we are done | |
3592 | */ | |
3593 | return; | |
d0e4ea4d KW |
3594 | # endif |
3595 | # else /* STDIO_PTR_LVALUE */ | |
1604cfb0 | 3596 | PerlProc_abort(); |
d0e4ea4d | 3597 | # endif /* STDIO_PTR_LVALUE */ |
14a5cf38 JH |
3598 | } |
3599 | /* | |
71200d45 | 3600 | * Now (or only) set cnt |
14a5cf38 | 3601 | */ |
d0e4ea4d | 3602 | # ifdef STDIO_CNT_LVALUE |
14a5cf38 | 3603 | PerlSIO_set_cnt(stdio, cnt); |
d0e4ea4d | 3604 | # elif (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) |
14a5cf38 | 3605 | PerlSIO_set_ptr(stdio, |
1604cfb0 MS |
3606 | PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - |
3607 | cnt)); | |
d0e4ea4d | 3608 | # else /* STDIO_PTR_LVAL_SETS_CNT */ |
14a5cf38 | 3609 | PerlProc_abort(); |
d0e4ea4d | 3610 | # endif /* STDIO_CNT_LVALUE */ |
9e353e3b NIS |
3611 | } |
3612 | ||
93679785 | 3613 | |
9e353e3b NIS |
3614 | #endif |
3615 | ||
93679785 NIS |
3616 | IV |
3617 | PerlIOStdio_fill(pTHX_ PerlIO *f) | |
3618 | { | |
abf9167d | 3619 | FILE * stdio; |
93679785 | 3620 | int c; |
96a5add6 | 3621 | PERL_UNUSED_CONTEXT; |
abf9167d | 3622 | if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */ |
1604cfb0 | 3623 | return -1; |
abf9167d | 3624 | stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
96a5add6 | 3625 | |
93679785 NIS |
3626 | /* |
3627 | * fflush()ing read-only streams can cause trouble on some stdio-s | |
3628 | */ | |
3629 | if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { | |
1604cfb0 MS |
3630 | if (PerlSIO_fflush(stdio) != 0) |
3631 | return EOF; | |
93679785 | 3632 | } |
f3be3723 | 3633 | for (;;) { |
1604cfb0 MS |
3634 | c = PerlSIO_fgetc(stdio); |
3635 | if (c != EOF) | |
3636 | break; | |
3637 | if (! PerlSIO_ferror(stdio) || errno != EINTR) | |
3638 | return EOF; | |
3639 | if (PL_sig_pending && S_perlio_async_run(aTHX_ f)) | |
3640 | return -1; | |
3641 | SETERRNO(0,0); | |
f3be3723 | 3642 | } |
93679785 NIS |
3643 | |
3644 | #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) | |
313e59c8 | 3645 | |
d0e4ea4d | 3646 | # ifdef STDIO_BUFFER_WRITABLE |
9f7cd136 | 3647 | if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { |
1604cfb0 MS |
3648 | /* Fake ungetc() to the real buffer in case system's ungetc |
3649 | goes elsewhere | |
3650 | */ | |
3651 | STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); | |
3652 | SSize_t cnt = PerlSIO_get_cnt(stdio); | |
3653 | STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); | |
3654 | if (ptr == base+1) { | |
3655 | *--ptr = (STDCHAR) c; | |
3656 | PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); | |
3657 | if (PerlSIO_feof(stdio)) | |
3658 | PerlSIO_clearerr(stdio); | |
3659 | return 0; | |
3660 | } | |
93679785 | 3661 | } |
313e59c8 | 3662 | else |
d0e4ea4d | 3663 | # endif |
313e59c8 | 3664 | if (PerlIO_has_cntptr(f)) { |
1604cfb0 MS |
3665 | STDCHAR ch = c; |
3666 | if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { | |
3667 | return 0; | |
3668 | } | |
9f7cd136 | 3669 | } |
93679785 NIS |
3670 | #endif |
3671 | ||
93679785 | 3672 | /* If buffer snoop scheme above fails fall back to |
9f7cd136 | 3673 | using ungetc(). |
93679785 NIS |
3674 | */ |
3675 | if (PerlSIO_ungetc(c, stdio) != c) | |
1604cfb0 | 3676 | return EOF; |
5876737a | 3677 | |
93679785 NIS |
3678 | return 0; |
3679 | } | |
3680 | ||
3681 | ||
3682 | ||
27da23d5 | 3683 | PERLIO_FUNCS_DECL(PerlIO_stdio) = { |
2dc2558e | 3684 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
3685 | "stdio", |
3686 | sizeof(PerlIOStdio), | |
86e05cf2 | 3687 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
1fd8f4ce | 3688 | PerlIOStdio_pushed, |
2376d97d | 3689 | PerlIOBase_popped, |
14a5cf38 | 3690 | PerlIOStdio_open, |
86e05cf2 | 3691 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
3692 | NULL, |
3693 | PerlIOStdio_fileno, | |
71200d45 | 3694 | PerlIOStdio_dup, |
14a5cf38 JH |
3695 | PerlIOStdio_read, |
3696 | PerlIOStdio_unread, | |
3697 | PerlIOStdio_write, | |
3698 | PerlIOStdio_seek, | |
3699 | PerlIOStdio_tell, | |
3700 | PerlIOStdio_close, | |
3701 | PerlIOStdio_flush, | |
3702 | PerlIOStdio_fill, | |
3703 | PerlIOStdio_eof, | |
3704 | PerlIOStdio_error, | |
3705 | PerlIOStdio_clearerr, | |
3706 | PerlIOStdio_setlinebuf, | |
9e353e3b | 3707 | #ifdef FILE_base |
14a5cf38 JH |
3708 | PerlIOStdio_get_base, |
3709 | PerlIOStdio_get_bufsiz, | |
9e353e3b | 3710 | #else |
14a5cf38 JH |
3711 | NULL, |
3712 | NULL, | |
9e353e3b NIS |
3713 | #endif |
3714 | #ifdef USE_STDIO_PTR | |
14a5cf38 JH |
3715 | PerlIOStdio_get_ptr, |
3716 | PerlIOStdio_get_cnt, | |
15b61c98 | 3717 | # if defined(HAS_FAST_STDIO) && defined(USE_FAST_STDIO) |
79ed0f43 | 3718 | PerlIOStdio_set_ptrcnt, |
15b61c98 JH |
3719 | # else |
3720 | NULL, | |
3721 | # endif /* HAS_FAST_STDIO && USE_FAST_STDIO */ | |
3722 | #else | |
3723 | NULL, | |
14a5cf38 JH |
3724 | NULL, |
3725 | NULL, | |
15b61c98 | 3726 | #endif /* USE_STDIO_PTR */ |
9e353e3b NIS |
3727 | }; |
3728 | ||
b9d6bf13 JH |
3729 | /* Note that calls to PerlIO_exportFILE() are reversed using |
3730 | * PerlIO_releaseFILE(), not importFILE. */ | |
9e353e3b | 3731 | FILE * |
81428673 | 3732 | PerlIO_exportFILE(PerlIO * f, const char *mode) |
9e353e3b | 3733 | { |
e87a358a | 3734 | dTHX; |
81428673 NIS |
3735 | FILE *stdio = NULL; |
3736 | if (PerlIOValid(f)) { | |
1604cfb0 | 3737 | char buf[8]; |
375ed12a JH |
3738 | int fd = PerlIO_fileno(f); |
3739 | if (fd < 0) { | |
3740 | return NULL; | |
3741 | } | |
1604cfb0 MS |
3742 | PerlIO_flush(f); |
3743 | if (!mode || !*mode) { | |
3744 | mode = PerlIO_modestr(f, buf); | |
3745 | } | |
3746 | stdio = PerlSIO_fdopen(PerlIO_fileno(f), mode); | |
3747 | if (stdio) { | |
3748 | PerlIOl *l = *f; | |
3749 | PerlIO *f2; | |
3750 | /* De-link any lower layers so new :stdio sticks */ | |
3751 | *f = NULL; | |
3752 | if ((f2 = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_stdio), buf, NULL))) { | |
3753 | PerlIOStdio *s = PerlIOSelf((f = f2), PerlIOStdio); | |
3754 | s->stdio = stdio; | |
3755 | PerlIOUnix_refcnt_inc(fileno(stdio)); | |
3756 | /* Link previous lower layers under new one */ | |
3757 | *PerlIONext(f) = l; | |
3758 | } | |
3759 | else { | |
3760 | /* restore layers list */ | |
3761 | *f = l; | |
3762 | } | |
3763 | } | |
14a5cf38 JH |
3764 | } |
3765 | return stdio; | |
9e353e3b NIS |
3766 | } |
3767 | ||
81428673 | 3768 | |
9e353e3b NIS |
3769 | FILE * |
3770 | PerlIO_findFILE(PerlIO *f) | |
3771 | { | |
14a5cf38 | 3772 | PerlIOl *l = *f; |
bbbc33d0 | 3773 | FILE *stdio; |
14a5cf38 | 3774 | while (l) { |
1604cfb0 MS |
3775 | if (l->tab == &PerlIO_stdio) { |
3776 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3777 | return s->stdio; | |
3778 | } | |
3779 | l = *PerlIONext(&l); | |
f7e7eb72 | 3780 | } |
4b069b44 | 3781 | /* Uses fallback "mode" via PerlIO_modestr() in PerlIO_exportFILE */ |
bbbc33d0 NC |
3782 | /* However, we're not really exporting a FILE * to someone else (who |
3783 | becomes responsible for closing it, or calling PerlIO_releaseFILE()) | |
486ec47a | 3784 | So we need to undo its reference count increase on the underlying file |
bbbc33d0 NC |
3785 | descriptor. We have to do this, because if the loop above returns you |
3786 | the FILE *, then *it* didn't increase any reference count. So there's | |
3787 | only one way to be consistent. */ | |
3788 | stdio = PerlIO_exportFILE(f, NULL); | |
3789 | if (stdio) { | |
1604cfb0 MS |
3790 | const int fd = fileno(stdio); |
3791 | if (fd >= 0) | |
3792 | PerlIOUnix_refcnt_dec(fd); | |
bbbc33d0 NC |
3793 | } |
3794 | return stdio; | |
9e353e3b NIS |
3795 | } |
3796 | ||
b9d6bf13 | 3797 | /* Use this to reverse PerlIO_exportFILE calls. */ |
9e353e3b NIS |
3798 | void |
3799 | PerlIO_releaseFILE(PerlIO *p, FILE *f) | |
3800 | { | |
22569500 NIS |
3801 | PerlIOl *l; |
3802 | while ((l = *p)) { | |
1604cfb0 MS |
3803 | if (l->tab == &PerlIO_stdio) { |
3804 | PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); | |
3805 | if (s->stdio == f) { /* not in a loop */ | |
3806 | const int fd = fileno(f); | |
3807 | if (fd >= 0) | |
3808 | PerlIOUnix_refcnt_dec(fd); | |
3809 | { | |
3810 | dTHX; | |
3811 | PerlIO_pop(aTHX_ p); | |
3812 | } | |
3813 | return; | |
3814 | } | |
3815 | } | |
3816 | p = PerlIONext(p); | |
22569500 NIS |
3817 | } |
3818 | return; | |
9e353e3b NIS |
3819 | } |
3820 | ||
3821 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 | 3822 | /* |
71200d45 | 3823 | * perlio buffer layer |
14a5cf38 | 3824 | */ |
9e353e3b | 3825 | |
5e2ab84b | 3826 | IV |
2dc2558e | 3827 | PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 3828 | { |
14a5cf38 | 3829 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); |
de009b76 | 3830 | const int fd = PerlIO_fileno(f); |
14a5cf38 | 3831 | if (fd >= 0 && PerlLIO_isatty(fd)) { |
1604cfb0 | 3832 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; |
14a5cf38 | 3833 | } |
4b069b44 | 3834 | if (*PerlIONext(f)) { |
1604cfb0 MS |
3835 | const Off_t posn = PerlIO_tell(PerlIONext(f)); |
3836 | if (posn != (Off_t) - 1) { | |
3837 | b->posn = posn; | |
3838 | } | |
14a5cf38 | 3839 | } |
2dc2558e | 3840 | return PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b NIS |
3841 | } |
3842 | ||
9e353e3b | 3843 | PerlIO * |
14a5cf38 | 3844 | PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, |
1604cfb0 MS |
3845 | IV n, const char *mode, int fd, int imode, int perm, |
3846 | PerlIO *f, int narg, SV **args) | |
14a5cf38 | 3847 | { |
04892f78 | 3848 | if (PerlIOValid(f)) { |
1604cfb0 MS |
3849 | PerlIO *next = PerlIONext(f); |
3850 | PerlIO_funcs *tab = | |
3851 | PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); | |
3852 | if (tab && tab->Open) | |
3853 | next = | |
3854 | (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3855 | next, narg, args); | |
3856 | if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg, self) != 0) { | |
3857 | return NULL; | |
3858 | } | |
14a5cf38 JH |
3859 | } |
3860 | else { | |
1604cfb0 MS |
3861 | PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); |
3862 | int init = 0; | |
3863 | if (*mode == IoTYPE_IMPLICIT) { | |
3864 | init = 1; | |
3865 | /* | |
3866 | * mode++; | |
3867 | */ | |
3868 | } | |
3869 | if (tab && tab->Open) | |
3870 | f = (*tab->Open)(aTHX_ tab, layers, n - 1, mode, fd, imode, perm, | |
3871 | f, narg, args); | |
3872 | else | |
3873 | SETERRNO(EINVAL, LIB_INVARG); | |
3874 | if (f) { | |
3875 | if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { | |
3876 | /* | |
3877 | * if push fails during open, open fails. close will pop us. | |
3878 | */ | |
3879 | PerlIO_close (f); | |
3880 | return NULL; | |
3881 | } else { | |
3882 | fd = PerlIO_fileno(f); | |
3883 | if (init && fd == 2) { | |
3884 | /* | |
3885 | * Initial stderr is unbuffered | |
3886 | */ | |
3887 | PerlIOBase(f)->flags |= PERLIO_F_UNBUF; | |
3888 | } | |
23b84778 IZ |
3889 | #ifdef PERLIO_USING_CRLF |
3890 | # ifdef PERLIO_IS_BINMODE_FD | |
1604cfb0 MS |
3891 | if (PERLIO_IS_BINMODE_FD(fd)) |
3892 | PerlIO_binmode(aTHX_ f, '<'/*not used*/, O_BINARY, NULL); | |
3893 | else | |
23b84778 | 3894 | # endif |
1604cfb0 MS |
3895 | /* |
3896 | * do something about failing setmode()? --jhi | |
3897 | */ | |
3898 | PerlLIO_setmode(fd, O_BINARY); | |
23b84778 | 3899 | #endif |
8c8488cd | 3900 | #ifdef VMS |
1604cfb0 MS |
3901 | /* Enable line buffering with record-oriented regular files |
3902 | * so we don't introduce an extraneous record boundary when | |
3903 | * the buffer fills up. | |
3904 | */ | |
3905 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { | |
3906 | Stat_t st; | |
3907 | if (PerlLIO_fstat(fd, &st) == 0 | |
3908 | && S_ISREG(st.st_mode) | |
3909 | && (st.st_fab_rfm == FAB$C_VAR | |
3910 | || st.st_fab_rfm == FAB$C_VFC)) { | |
3911 | PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; | |
3912 | } | |
3913 | } | |
8c8488cd | 3914 | #endif |
1604cfb0 MS |
3915 | } |
3916 | } | |
ee518936 | 3917 | } |
14a5cf38 | 3918 | return f; |
9e353e3b NIS |
3919 | } |
3920 | ||
14a5cf38 JH |
3921 | /* |
3922 | * This "flush" is akin to sfio's sync in that it handles files in either | |
93c2c2ec IZ |
3923 | * read or write state. For write state, we put the postponed data through |
3924 | * the next layers. For read state, we seek() the next layers to the | |
3925 | * offset given by current position in the buffer, and discard the buffer | |
3926 | * state (XXXX supposed to be for seek()able buffers only, but now it is done | |
3927 | * in any case?). Then the pass the stick further in chain. | |
14a5cf38 | 3928 | */ |
9e353e3b | 3929 | IV |
f62ce20a | 3930 | PerlIOBuf_flush(pTHX_ PerlIO *f) |
6f9d8c32 | 3931 | { |
dcda55fc | 3932 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 3933 | int code = 0; |
04892f78 | 3934 | PerlIO *n = PerlIONext(f); |
14a5cf38 | 3935 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { |
1604cfb0 MS |
3936 | /* |
3937 | * write() the buffer | |
3938 | */ | |
3939 | const STDCHAR *buf = b->buf; | |
3940 | const STDCHAR *p = buf; | |
3941 | while (p < b->ptr) { | |
3942 | SSize_t count = PerlIO_write(n, p, b->ptr - p); | |
3943 | if (count > 0) { | |
3944 | p += count; | |
3945 | } | |
3946 | else if (count < 0 || PerlIO_error(n)) { | |
3947 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
3948 | PerlIO_save_errno(f); | |
3949 | code = -1; | |
3950 | break; | |
3951 | } | |
3952 | } | |
3953 | b->posn += (p - buf); | |
14a5cf38 JH |
3954 | } |
3955 | else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { | |
1604cfb0 MS |
3956 | STDCHAR *buf = PerlIO_get_base(f); |
3957 | /* | |
3958 | * Note position change | |
3959 | */ | |
3960 | b->posn += (b->ptr - buf); | |
3961 | if (b->ptr < b->end) { | |
3962 | /* We did not consume all of it - try and seek downstream to | |
3963 | our logical position | |
3964 | */ | |
3965 | if (PerlIOValid(n) && PerlIO_seek(n, b->posn, SEEK_SET) == 0) { | |
3966 | /* Reload n as some layers may pop themselves on seek */ | |
3967 | b->posn = PerlIO_tell(n = PerlIONext(f)); | |
3968 | } | |
3969 | else { | |
3970 | /* Seek failed (e.g. pipe or tty). Do NOT clear buffer or pre-read | |
3971 | data is lost for good - so return saying "ok" having undone | |
3972 | the position adjust | |
3973 | */ | |
3974 | b->posn -= (b->ptr - buf); | |
3975 | return code; | |
3976 | } | |
3977 | } | |
14a5cf38 JH |
3978 | } |
3979 | b->ptr = b->end = b->buf; | |
3980 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); | |
04892f78 | 3981 | /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ |
04892f78 | 3982 | if (PerlIOValid(n) && PerlIO_flush(n) != 0) |
1604cfb0 | 3983 | code = -1; |
14a5cf38 | 3984 | return code; |
6f9d8c32 NIS |
3985 | } |
3986 | ||
93c2c2ec IZ |
3987 | /* This discards the content of the buffer after b->ptr, and rereads |
3988 | * the buffer from the position off in the layer downstream; here off | |
3989 | * is at offset corresponding to b->ptr - b->buf. | |
3990 | */ | |
06da4f11 | 3991 | IV |
f62ce20a | 3992 | PerlIOBuf_fill(pTHX_ PerlIO *f) |
06da4f11 | 3993 | { |
dcda55fc | 3994 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
3995 | PerlIO *n = PerlIONext(f); |
3996 | SSize_t avail; | |
3997 | /* | |
4b069b44 NIS |
3998 | * Down-stream flush is defined not to loose read data so is harmless. |
3999 | * we would not normally be fill'ing if there was data left in anycase. | |
14a5cf38 | 4000 | */ |
93c2c2ec | 4001 | if (PerlIO_flush(f) != 0) /* XXXX Check that its seek() succeeded?! */ |
1604cfb0 | 4002 | return -1; |
14a5cf38 | 4003 | if (PerlIOBase(f)->flags & PERLIO_F_TTY) |
1604cfb0 | 4004 | PerlIOBase_flush_linebuf(aTHX); |
14a5cf38 JH |
4005 | |
4006 | if (!b->buf) | |
1604cfb0 | 4007 | PerlIO_get_base(f); /* allocate via vtable */ |
14a5cf38 | 4008 | |
0f0eef27 | 4009 | assert(b->buf); /* The b->buf does get allocated via the vtable system. */ |
ec6fa4f0 | 4010 | |
14a5cf38 | 4011 | b->ptr = b->end = b->buf; |
4b069b44 NIS |
4012 | |
4013 | if (!PerlIOValid(n)) { | |
1604cfb0 MS |
4014 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
4015 | return -1; | |
4b069b44 NIS |
4016 | } |
4017 | ||
14a5cf38 | 4018 | if (PerlIO_fast_gets(n)) { |
1604cfb0 MS |
4019 | /* |
4020 | * Layer below is also buffered. We do _NOT_ want to call its | |
4021 | * ->Read() because that will loop till it gets what we asked for | |
4022 | * which may hang on a pipe etc. Instead take anything it has to | |
4023 | * hand, or ask it to fill _once_. | |
4024 | */ | |
4025 | avail = PerlIO_get_cnt(n); | |
4026 | if (avail <= 0) { | |
4027 | avail = PerlIO_fill(n); | |
4028 | if (avail == 0) | |
4029 | avail = PerlIO_get_cnt(n); | |
4030 | else { | |
4031 | if (!PerlIO_error(n) && PerlIO_eof(n)) | |
4032 | avail = 0; | |
4033 | } | |
4034 | } | |
4035 | if (avail > 0) { | |
4036 | STDCHAR *ptr = PerlIO_get_ptr(n); | |
4037 | const SSize_t cnt = avail; | |
4038 | if (avail > (SSize_t)b->bufsiz) | |
4039 | avail = b->bufsiz; | |
4040 | Copy(ptr, b->buf, avail, STDCHAR); | |
4041 | PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); | |
4042 | } | |
14a5cf38 JH |
4043 | } |
4044 | else { | |
1604cfb0 | 4045 | avail = PerlIO_read(n, b->ptr, b->bufsiz); |
14a5cf38 JH |
4046 | } |
4047 | if (avail <= 0) { | |
1604cfb0 MS |
4048 | if (avail == 0) |
4049 | PerlIOBase(f)->flags |= PERLIO_F_EOF; | |
4050 | else | |
4051 | { | |
4052 | PerlIOBase(f)->flags |= PERLIO_F_ERROR; | |
4053 | PerlIO_save_errno(f); | |
4054 | } | |
4055 | return -1; | |
14a5cf38 JH |
4056 | } |
4057 | b->end = b->buf + avail; | |
4058 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4059 | return 0; | |
06da4f11 NIS |
4060 | } |
4061 | ||
6f9d8c32 | 4062 | SSize_t |
f62ce20a | 4063 | PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
6f9d8c32 | 4064 | { |
04892f78 | 4065 | if (PerlIOValid(f)) { |
dcda55fc | 4066 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
1604cfb0 MS |
4067 | if (!b->ptr) |
4068 | PerlIO_get_base(f); | |
4069 | return PerlIOBase_read(aTHX_ f, vbuf, count); | |
14a5cf38 JH |
4070 | } |
4071 | return 0; | |
6f9d8c32 NIS |
4072 | } |
4073 | ||
9e353e3b | 4074 | SSize_t |
f62ce20a | 4075 | PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4076 | { |
14a5cf38 | 4077 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
dcda55fc | 4078 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 JH |
4079 | SSize_t unread = 0; |
4080 | SSize_t avail; | |
4081 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
1604cfb0 | 4082 | PerlIO_flush(f); |
14a5cf38 | 4083 | if (!b->buf) |
1604cfb0 | 4084 | PerlIO_get_base(f); |
14a5cf38 | 4085 | if (b->buf) { |
1604cfb0 MS |
4086 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
4087 | /* | |
4088 | * Buffer is already a read buffer, we can overwrite any chars | |
4089 | * which have been read back to buffer start | |
4090 | */ | |
4091 | avail = (b->ptr - b->buf); | |
4092 | } | |
4093 | else { | |
4094 | /* | |
4095 | * Buffer is idle, set it up so whole buffer is available for | |
4096 | * unread | |
4097 | */ | |
4098 | avail = b->bufsiz; | |
4099 | b->end = b->buf + avail; | |
4100 | b->ptr = b->end; | |
4101 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4102 | /* | |
4103 | * Buffer extends _back_ from where we are now | |
4104 | */ | |
4105 | b->posn -= b->bufsiz; | |
4106 | } | |
4107 | if ((SSize_t) count >= 0 && avail > (SSize_t) count) { | |
4108 | /* | |
4109 | * If we have space for more than count, just move count | |
4110 | */ | |
4111 | avail = count; | |
4112 | } | |
4113 | if (avail > 0) { | |
4114 | b->ptr -= avail; | |
4115 | buf -= avail; | |
4116 | /* | |
4117 | * In simple stdio-like ungetc() case chars will be already | |
4118 | * there | |
4119 | */ | |
4120 | if (buf != b->ptr) { | |
4121 | Copy(buf, b->ptr, avail, STDCHAR); | |
4122 | } | |
4123 | count -= avail; | |
4124 | unread += avail; | |
4125 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; | |
4126 | } | |
14a5cf38 | 4127 | } |
93679785 | 4128 | if (count > 0) { |
1604cfb0 | 4129 | unread += PerlIOBase_unread(aTHX_ f, vbuf, count); |
93679785 | 4130 | } |
14a5cf38 | 4131 | return unread; |
760ac839 LW |
4132 | } |
4133 | ||
9e353e3b | 4134 | SSize_t |
f62ce20a | 4135 | PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
760ac839 | 4136 | { |
de009b76 | 4137 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4138 | const STDCHAR *buf = (const STDCHAR *) vbuf; |
ee56a6b9 | 4139 | const STDCHAR *flushptr = buf; |
14a5cf38 JH |
4140 | Size_t written = 0; |
4141 | if (!b->buf) | |
1604cfb0 | 4142 | PerlIO_get_base(f); |
14a5cf38 | 4143 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) |
1604cfb0 | 4144 | return 0; |
0678cb22 | 4145 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
1604cfb0 MS |
4146 | if (PerlIO_flush(f) != 0) { |
4147 | return 0; | |
4148 | } | |
0678cb22 | 4149 | } |
ee56a6b9 | 4150 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { |
1604cfb0 MS |
4151 | flushptr = buf + count; |
4152 | while (flushptr > buf && *(flushptr - 1) != '\n') | |
4153 | --flushptr; | |
ee56a6b9 | 4154 | } |
14a5cf38 | 4155 | while (count > 0) { |
1604cfb0 MS |
4156 | SSize_t avail = b->bufsiz - (b->ptr - b->buf); |
4157 | if ((SSize_t) count >= 0 && (SSize_t) count < avail) | |
4158 | avail = count; | |
4159 | if (flushptr > buf && flushptr <= buf + avail) | |
4160 | avail = flushptr - buf; | |
4161 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; | |
4162 | if (avail) { | |
4163 | Copy(buf, b->ptr, avail, STDCHAR); | |
4164 | count -= avail; | |
4165 | buf += avail; | |
4166 | written += avail; | |
4167 | b->ptr += avail; | |
4168 | if (buf == flushptr) | |
4169 | PerlIO_flush(f); | |
4170 | } | |
4171 | if (b->ptr >= (b->buf + b->bufsiz)) | |
4172 | if (PerlIO_flush(f) == -1) | |
4173 | return -1; | |
14a5cf38 JH |
4174 | } |
4175 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
1604cfb0 | 4176 | PerlIO_flush(f); |
14a5cf38 | 4177 | return written; |
9e353e3b NIS |
4178 | } |
4179 | ||
94a175e1 | 4180 | IV |
f62ce20a | 4181 | PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
9e353e3b | 4182 | { |
14a5cf38 JH |
4183 | IV code; |
4184 | if ((code = PerlIO_flush(f)) == 0) { | |
1604cfb0 MS |
4185 | PerlIOBase(f)->flags &= ~PERLIO_F_EOF; |
4186 | code = PerlIO_seek(PerlIONext(f), offset, whence); | |
4187 | if (code == 0) { | |
4188 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4189 | b->posn = PerlIO_tell(PerlIONext(f)); | |
4190 | } | |
9e353e3b | 4191 | } |
14a5cf38 | 4192 | return code; |
9e353e3b NIS |
4193 | } |
4194 | ||
4195 | Off_t | |
f62ce20a | 4196 | PerlIOBuf_tell(pTHX_ PerlIO *f) |
9e353e3b | 4197 | { |
dcda55fc | 4198 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4199 | /* |
71200d45 | 4200 | * b->posn is file position where b->buf was read, or will be written |
14a5cf38 JH |
4201 | */ |
4202 | Off_t posn = b->posn; | |
37725cdc | 4203 | if ((PerlIOBase(f)->flags & PERLIO_F_APPEND) && |
0678cb22 NIS |
4204 | (PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { |
4205 | #if 1 | |
1604cfb0 MS |
4206 | /* As O_APPEND files are normally shared in some sense it is better |
4207 | to flush : | |
4208 | */ | |
4209 | PerlIO_flush(f); | |
0678cb22 | 4210 | #else |
37725cdc | 4211 | /* when file is NOT shared then this is sufficient */ |
1604cfb0 | 4212 | PerlIO_seek(PerlIONext(f),0, SEEK_END); |
0678cb22 | 4213 | #endif |
1604cfb0 | 4214 | posn = b->posn = PerlIO_tell(PerlIONext(f)); |
0678cb22 | 4215 | } |
14a5cf38 | 4216 | if (b->buf) { |
1604cfb0 MS |
4217 | /* |
4218 | * If buffer is valid adjust position by amount in buffer | |
4219 | */ | |
4220 | posn += (b->ptr - b->buf); | |
14a5cf38 JH |
4221 | } |
4222 | return posn; | |
9e353e3b NIS |
4223 | } |
4224 | ||
4225 | IV | |
44798d05 NIS |
4226 | PerlIOBuf_popped(pTHX_ PerlIO *f) |
4227 | { | |
de009b76 AL |
4228 | const IV code = PerlIOBase_popped(aTHX_ f); |
4229 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
44798d05 | 4230 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
1604cfb0 | 4231 | Safefree(b->buf); |
44798d05 | 4232 | } |
dcda55fc | 4233 | b->ptr = b->end = b->buf = NULL; |
44798d05 NIS |
4234 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4235 | return code; | |
4236 | } | |
4237 | ||
4238 | IV | |
f62ce20a | 4239 | PerlIOBuf_close(pTHX_ PerlIO *f) |
9e353e3b | 4240 | { |
de009b76 AL |
4241 | const IV code = PerlIOBase_close(aTHX_ f); |
4242 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); | |
14a5cf38 | 4243 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
1604cfb0 | 4244 | Safefree(b->buf); |
14a5cf38 | 4245 | } |
dcda55fc | 4246 | b->ptr = b->end = b->buf = NULL; |
14a5cf38 JH |
4247 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
4248 | return code; | |
760ac839 LW |
4249 | } |
4250 | ||
9e353e3b | 4251 | STDCHAR * |
f62ce20a | 4252 | PerlIOBuf_get_ptr(pTHX_ PerlIO *f) |
9e353e3b | 4253 | { |
dcda55fc | 4254 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4255 | if (!b->buf) |
1604cfb0 | 4256 | PerlIO_get_base(f); |
14a5cf38 | 4257 | return b->ptr; |
9e353e3b NIS |
4258 | } |
4259 | ||
05d1247b | 4260 | SSize_t |
f62ce20a | 4261 | PerlIOBuf_get_cnt(pTHX_ PerlIO *f) |
9e353e3b | 4262 | { |
dcda55fc | 4263 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4264 | if (!b->buf) |
1604cfb0 | 4265 | PerlIO_get_base(f); |
14a5cf38 | 4266 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) |
1604cfb0 | 4267 | return (b->end - b->ptr); |
14a5cf38 | 4268 | return 0; |
9e353e3b NIS |
4269 | } |
4270 | ||
4271 | STDCHAR * | |
f62ce20a | 4272 | PerlIOBuf_get_base(pTHX_ PerlIO *f) |
9e353e3b | 4273 | { |
dcda55fc | 4274 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
96a5add6 AL |
4275 | PERL_UNUSED_CONTEXT; |
4276 | ||
14a5cf38 | 4277 | if (!b->buf) { |
1604cfb0 MS |
4278 | if (!b->bufsiz) |
4279 | b->bufsiz = PERLIOBUF_DEFAULT_BUFSIZ; | |
4280 | Newx(b->buf,b->bufsiz, STDCHAR); | |
4281 | if (!b->buf) { | |
4282 | b->buf = (STDCHAR *) & b->oneword; | |
4283 | b->bufsiz = sizeof(b->oneword); | |
4284 | } | |
4285 | b->end = b->ptr = b->buf; | |
06da4f11 | 4286 | } |
14a5cf38 | 4287 | return b->buf; |
9e353e3b NIS |
4288 | } |
4289 | ||
4290 | Size_t | |
f62ce20a | 4291 | PerlIOBuf_bufsiz(pTHX_ PerlIO *f) |
9e353e3b | 4292 | { |
dcda55fc | 4293 | const PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4294 | if (!b->buf) |
1604cfb0 | 4295 | PerlIO_get_base(f); |
14a5cf38 | 4296 | return (b->end - b->buf); |
9e353e3b NIS |
4297 | } |
4298 | ||
4299 | void | |
f62ce20a | 4300 | PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
9e353e3b | 4301 | { |
dcda55fc | 4302 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
babfacb9 JH |
4303 | #ifndef DEBUGGING |
4304 | PERL_UNUSED_ARG(cnt); | |
4305 | #endif | |
14a5cf38 | 4306 | if (!b->buf) |
1604cfb0 | 4307 | PerlIO_get_base(f); |
14a5cf38 | 4308 | b->ptr = ptr; |
b727803b RGS |
4309 | assert(PerlIO_get_cnt(f) == cnt); |
4310 | assert(b->ptr >= b->buf); | |
14a5cf38 | 4311 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; |
760ac839 LW |
4312 | } |
4313 | ||
71200d45 | 4314 | PerlIO * |
ecdeb87c | 4315 | PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
71200d45 | 4316 | { |
ecdeb87c | 4317 | return PerlIOBase_dup(aTHX_ f, o, param, flags); |
71200d45 NIS |
4318 | } |
4319 | ||
4320 | ||
4321 | ||
27da23d5 | 4322 | PERLIO_FUNCS_DECL(PerlIO_perlio) = { |
2dc2558e | 4323 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4324 | "perlio", |
4325 | sizeof(PerlIOBuf), | |
86e05cf2 | 4326 | PERLIO_K_BUFFERED|PERLIO_K_RAW, |
14a5cf38 | 4327 | PerlIOBuf_pushed, |
44798d05 | 4328 | PerlIOBuf_popped, |
14a5cf38 | 4329 | PerlIOBuf_open, |
86e05cf2 | 4330 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4331 | NULL, |
4332 | PerlIOBase_fileno, | |
71200d45 | 4333 | PerlIOBuf_dup, |
14a5cf38 JH |
4334 | PerlIOBuf_read, |
4335 | PerlIOBuf_unread, | |
4336 | PerlIOBuf_write, | |
4337 | PerlIOBuf_seek, | |
4338 | PerlIOBuf_tell, | |
4339 | PerlIOBuf_close, | |
4340 | PerlIOBuf_flush, | |
4341 | PerlIOBuf_fill, | |
4342 | PerlIOBase_eof, | |
4343 | PerlIOBase_error, | |
4344 | PerlIOBase_clearerr, | |
4345 | PerlIOBase_setlinebuf, | |
4346 | PerlIOBuf_get_base, | |
4347 | PerlIOBuf_bufsiz, | |
4348 | PerlIOBuf_get_ptr, | |
4349 | PerlIOBuf_get_cnt, | |
4350 | PerlIOBuf_set_ptrcnt, | |
9e353e3b NIS |
4351 | }; |
4352 | ||
66ecd56b | 4353 | /*--------------------------------------------------------------------------------------*/ |
14a5cf38 | 4354 | /* |
71200d45 | 4355 | * Temp layer to hold unread chars when cannot do it any other way |
14a5cf38 | 4356 | */ |
5e2ab84b NIS |
4357 | |
4358 | IV | |
f62ce20a | 4359 | PerlIOPending_fill(pTHX_ PerlIO *f) |
5e2ab84b | 4360 | { |
14a5cf38 | 4361 | /* |
71200d45 | 4362 | * Should never happen |
14a5cf38 JH |
4363 | */ |
4364 | PerlIO_flush(f); | |
4365 | return 0; | |
5e2ab84b NIS |
4366 | } |
4367 | ||
4368 | IV | |
f62ce20a | 4369 | PerlIOPending_close(pTHX_ PerlIO *f) |
5e2ab84b | 4370 | { |
14a5cf38 | 4371 | /* |
71200d45 | 4372 | * A tad tricky - flush pops us, then we close new top |
14a5cf38 JH |
4373 | */ |
4374 | PerlIO_flush(f); | |
4375 | return PerlIO_close(f); | |
5e2ab84b NIS |
4376 | } |
4377 | ||
94a175e1 | 4378 | IV |
f62ce20a | 4379 | PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
5e2ab84b | 4380 | { |
14a5cf38 | 4381 | /* |
71200d45 | 4382 | * A tad tricky - flush pops us, then we seek new top |
14a5cf38 JH |
4383 | */ |
4384 | PerlIO_flush(f); | |
4385 | return PerlIO_seek(f, offset, whence); | |
5e2ab84b NIS |
4386 | } |
4387 | ||
4388 | ||
4389 | IV | |
f62ce20a | 4390 | PerlIOPending_flush(pTHX_ PerlIO *f) |
5e2ab84b | 4391 | { |
dcda55fc | 4392 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4393 | if (b->buf && b->buf != (STDCHAR *) & b->oneword) { |
1604cfb0 MS |
4394 | Safefree(b->buf); |
4395 | b->buf = NULL; | |
14a5cf38 JH |
4396 | } |
4397 | PerlIO_pop(aTHX_ f); | |
4398 | return 0; | |
5e2ab84b NIS |
4399 | } |
4400 | ||
4401 | void | |
f62ce20a | 4402 | PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
5e2ab84b | 4403 | { |
14a5cf38 | 4404 | if (cnt <= 0) { |
1604cfb0 | 4405 | PerlIO_flush(f); |
14a5cf38 JH |
4406 | } |
4407 | else { | |
1604cfb0 | 4408 | PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); |
14a5cf38 | 4409 | } |
5e2ab84b NIS |
4410 | } |
4411 | ||
4412 | IV | |
2dc2558e | 4413 | PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
5e2ab84b | 4414 | { |
de009b76 | 4415 | const IV code = PerlIOBase_pushed(aTHX_ f, mode, arg, tab); |
dcda55fc | 4416 | PerlIOl * const l = PerlIOBase(f); |
14a5cf38 | 4417 | /* |
71200d45 NIS |
4418 | * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() |
4419 | * etc. get muddled when it changes mid-string when we auto-pop. | |
14a5cf38 JH |
4420 | */ |
4421 | l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | | |
1604cfb0 MS |
4422 | (PerlIOBase(PerlIONext(f))-> |
4423 | flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); | |
14a5cf38 | 4424 | return code; |
5e2ab84b NIS |
4425 | } |
4426 | ||
4427 | SSize_t | |
f62ce20a | 4428 | PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
5e2ab84b | 4429 | { |
14a5cf38 JH |
4430 | SSize_t avail = PerlIO_get_cnt(f); |
4431 | SSize_t got = 0; | |
94e529cc | 4432 | if ((SSize_t) count >= 0 && (SSize_t)count < avail) |
1604cfb0 | 4433 | avail = count; |
14a5cf38 | 4434 | if (avail > 0) |
1604cfb0 | 4435 | got = PerlIOBuf_read(aTHX_ f, vbuf, avail); |
eb160463 | 4436 | if (got >= 0 && got < (SSize_t)count) { |
1604cfb0 MS |
4437 | const SSize_t more = |
4438 | PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); | |
4439 | if (more >= 0 || got == 0) | |
4440 | got += more; | |
14a5cf38 JH |
4441 | } |
4442 | return got; | |
5e2ab84b NIS |
4443 | } |
4444 | ||
27da23d5 | 4445 | PERLIO_FUNCS_DECL(PerlIO_pending) = { |
2dc2558e | 4446 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4447 | "pending", |
4448 | sizeof(PerlIOBuf), | |
86e05cf2 | 4449 | PERLIO_K_BUFFERED|PERLIO_K_RAW, /* not sure about RAW here */ |
14a5cf38 | 4450 | PerlIOPending_pushed, |
44798d05 | 4451 | PerlIOBuf_popped, |
14a5cf38 | 4452 | NULL, |
86e05cf2 | 4453 | PerlIOBase_binmode, /* binmode */ |
14a5cf38 JH |
4454 | NULL, |
4455 | PerlIOBase_fileno, | |
71200d45 | 4456 | PerlIOBuf_dup, |
14a5cf38 JH |
4457 | PerlIOPending_read, |
4458 | PerlIOBuf_unread, | |
4459 | PerlIOBuf_write, | |
4460 | PerlIOPending_seek, | |
4461 | PerlIOBuf_tell, | |
4462 | PerlIOPending_close, | |
4463 | PerlIOPending_flush, | |
4464 | PerlIOPending_fill, | |
4465 | PerlIOBase_eof, | |
4466 | PerlIOBase_error, | |
4467 | PerlIOBase_clearerr, | |
4468 | PerlIOBase_setlinebuf, | |
4469 | PerlIOBuf_get_base, | |
4470 | PerlIOBuf_bufsiz, | |
4471 | PerlIOBuf_get_ptr, | |
4472 | PerlIOBuf_get_cnt, | |
4473 | PerlIOPending_set_ptrcnt, | |
5e2ab84b NIS |
4474 | }; |
4475 | ||
4476 | ||
4477 | ||
4478 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4479 | /* |
4480 | * crlf - translation On read translate CR,LF to "\n" we do this by | |
4481 | * overriding ptr/cnt entries to hand back a line at a time and keeping a | |
71200d45 | 4482 | * record of which nl we "lied" about. On write translate "\n" to CR,LF |
93c2c2ec IZ |
4483 | * |
4484 | * c->nl points on the first byte of CR LF pair when it is temporarily | |
4485 | * replaced by LF, or to the last CR of the buffer. In the former case | |
4486 | * the caller thinks that the buffer ends at c->nl + 1, in the latter | |
4487 | * that it ends at c->nl; these two cases can be distinguished by | |
4488 | * *c->nl. c->nl is set during _getcnt() call, and unset during | |
4489 | * _unread() and _flush() calls. | |
4490 | * It only matters for read operations. | |
66ecd56b NIS |
4491 | */ |
4492 | ||
14a5cf38 | 4493 | typedef struct { |
22569500 NIS |
4494 | PerlIOBuf base; /* PerlIOBuf stuff */ |
4495 | STDCHAR *nl; /* Position of crlf we "lied" about in the | |
1604cfb0 | 4496 | * buffer */ |
99efab12 NIS |
4497 | } PerlIOCrlf; |
4498 | ||
ff1e3883 JD |
4499 | /* Inherit the PERLIO_F_UTF8 flag from previous layer. |
4500 | * Otherwise the :crlf layer would always revert back to | |
4501 | * raw mode. | |
4502 | */ | |
4503 | static void | |
4504 | S_inherit_utf8_flag(PerlIO *f) | |
4505 | { | |
4506 | PerlIO *g = PerlIONext(f); | |
4507 | if (PerlIOValid(g)) { | |
1604cfb0 MS |
4508 | if (PerlIOBase(g)->flags & PERLIO_F_UTF8) { |
4509 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; | |
4510 | } | |
ff1e3883 JD |
4511 | } |
4512 | } | |
4513 | ||
f5b9d040 | 4514 | IV |
2dc2558e | 4515 | PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
f5b9d040 | 4516 | { |
14a5cf38 JH |
4517 | IV code; |
4518 | PerlIOBase(f)->flags |= PERLIO_F_CRLF; | |
2dc2558e | 4519 | code = PerlIOBuf_pushed(aTHX_ f, mode, arg, tab); |
5e2ab84b | 4520 | #if 0 |
e17bc05a | 4521 | DEBUG_i( |
14a5cf38 | 4522 | PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", |
1604cfb0 MS |
4523 | (void*)f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", |
4524 | PerlIOBase(f)->flags); | |
e17bc05a | 4525 | ); |
5e2ab84b | 4526 | #endif |
8229d19f | 4527 | { |
5da08ab0 LT |
4528 | /* If the old top layer is a CRLF layer, reactivate it (if |
4529 | * necessary) and remove this new layer from the stack */ | |
1604cfb0 MS |
4530 | PerlIO *g = PerlIONext(f); |
4531 | if (PerlIOValid(g)) { | |
4532 | PerlIOl *b = PerlIOBase(g); | |
4533 | if (b && b->tab == &PerlIO_crlf) { | |
4534 | if (!(b->flags & PERLIO_F_CRLF)) | |
4535 | b->flags |= PERLIO_F_CRLF; | |
4536 | S_inherit_utf8_flag(g); | |
4537 | PerlIO_pop(aTHX_ f); | |
4538 | return code; | |
4539 | } | |
4540 | } | |
8229d19f | 4541 | } |
ff1e3883 | 4542 | S_inherit_utf8_flag(f); |
14a5cf38 | 4543 | return code; |
f5b9d040 NIS |
4544 | } |
4545 | ||
4546 | ||
99efab12 | 4547 | SSize_t |
f62ce20a | 4548 | PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4549 | { |
dcda55fc | 4550 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
93c2c2ec | 4551 | if (c->nl) { /* XXXX Shouldn't it be done only if b->ptr > c->nl? */ |
1604cfb0 MS |
4552 | *(c->nl) = NATIVE_0xd; |
4553 | c->nl = NULL; | |
14a5cf38 JH |
4554 | } |
4555 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) | |
1604cfb0 | 4556 | return PerlIOBuf_unread(aTHX_ f, vbuf, count); |
14a5cf38 | 4557 | else { |
1604cfb0 MS |
4558 | const STDCHAR *buf = (const STDCHAR *) vbuf + count; |
4559 | PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); | |
4560 | SSize_t unread = 0; | |
4561 | if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) | |
4562 | PerlIO_flush(f); | |
4563 | if (!b->buf) | |
4564 | PerlIO_get_base(f); | |
4565 | if (b->buf) { | |
4566 | if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { | |
4567 | b->end = b->ptr = b->buf + b->bufsiz; | |
4568 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
4569 | b->posn -= b->bufsiz; | |
4570 | } | |
4571 | while (count > 0 && b->ptr > b->buf) { | |
4572 | const int ch = *--buf; | |
4573 | if (ch == '\n') { | |
4574 | if (b->ptr - 2 >= b->buf) { | |
4575 | *--(b->ptr) = NATIVE_0xa; | |
4576 | *--(b->ptr) = NATIVE_0xd; | |
4577 | unread++; | |
4578 | count--; | |
4579 | } | |
4580 | else { | |
4581 | /* If b->ptr - 1 == b->buf, we are undoing reading 0xa */ | |
76e6dc3a KW |
4582 | *--(b->ptr) = NATIVE_0xa; /* Works even if 0xa == |
4583 | '\r' */ | |
1604cfb0 MS |
4584 | unread++; |
4585 | count--; | |
4586 | } | |
4587 | } | |
4588 | else { | |
4589 | *--(b->ptr) = ch; | |
4590 | unread++; | |
4591 | count--; | |
4592 | } | |
4593 | } | |
4594 | } | |
ec1da995 LT |
4595 | if (count > 0) |
4596 | unread += PerlIOBase_unread(aTHX_ f, (const STDCHAR *) vbuf + unread, count); | |
1604cfb0 | 4597 | return unread; |
14a5cf38 | 4598 | } |
99efab12 NIS |
4599 | } |
4600 | ||
93c2c2ec | 4601 | /* XXXX This code assumes that buffer size >=2, but does not check it... */ |
99efab12 | 4602 | SSize_t |
f62ce20a | 4603 | PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) |
99efab12 | 4604 | { |
dcda55fc | 4605 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
14a5cf38 | 4606 | if (!b->buf) |
1604cfb0 | 4607 | PerlIO_get_base(f); |
14a5cf38 | 4608 | if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { |
1604cfb0 MS |
4609 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
4610 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == NATIVE_0xd)) { | |
4611 | STDCHAR *nl = (c->nl) ? c->nl : b->ptr; | |
4612 | scan: | |
4613 | while (nl < b->end && *nl != NATIVE_0xd) | |
4614 | nl++; | |
4615 | if (nl < b->end && *nl == NATIVE_0xd) { | |
4616 | test: | |
4617 | if (nl + 1 < b->end) { | |
4618 | if (nl[1] == NATIVE_0xa) { | |
4619 | *nl = '\n'; | |
4620 | c->nl = nl; | |
4621 | } | |
4622 | else { | |
4623 | /* | |
4624 | * Not CR,LF but just CR | |
4625 | */ | |
4626 | nl++; | |
4627 | goto scan; | |
4628 | } | |
4629 | } | |
4630 | else { | |
4631 | /* | |
4632 | * Blast - found CR as last char in buffer | |
4633 | */ | |
4634 | ||
4635 | if (b->ptr < nl) { | |
4636 | /* | |
4637 | * They may not care, defer work as long as | |
4638 | * possible | |
4639 | */ | |
4640 | c->nl = nl; | |
4641 | return (nl - b->ptr); | |
4642 | } | |
4643 | else { | |
4644 | int code; | |
4645 | b->ptr++; /* say we have read it as far as | |
4646 | * flush() is concerned */ | |
4647 | b->buf++; /* Leave space in front of buffer */ | |
4648 | /* Note as we have moved buf up flush's | |
4649 | posn += ptr-buf | |
4650 | will naturally make posn point at CR | |
4651 | */ | |
4652 | b->bufsiz--; /* Buffer is thus smaller */ | |
4653 | code = PerlIO_fill(f); /* Fetch some more */ | |
4654 | b->bufsiz++; /* Restore size for next time */ | |
4655 | b->buf--; /* Point at space */ | |
4656 | b->ptr = nl = b->buf; /* Which is what we hand | |
4657 | * off */ | |
4658 | *nl = NATIVE_0xd; /* Fill in the CR */ | |
4659 | if (code == 0) | |
4660 | goto test; /* fill() call worked */ | |
4661 | /* | |
4662 | * CR at EOF - just fall through | |
4663 | */ | |
4664 | /* Should we clear EOF though ??? */ | |
4665 | } | |
4666 | } | |
4667 | } | |
4668 | } | |
4669 | return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); | |
14a5cf38 JH |
4670 | } |
4671 | return 0; | |
99efab12 NIS |
4672 | } |
4673 | ||
4674 | void | |
f62ce20a | 4675 | PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) |
14a5cf38 | 4676 | { |
dcda55fc AL |
4677 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4678 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); | |
14a5cf38 | 4679 | if (!b->buf) |
1604cfb0 | 4680 | PerlIO_get_base(f); |
14a5cf38 | 4681 | if (!ptr) { |
1604cfb0 MS |
4682 | if (c->nl) { |
4683 | ptr = c->nl + 1; | |
4684 | if (ptr == b->end && *c->nl == NATIVE_0xd) { | |
4685 | /* Deferred CR at end of buffer case - we lied about count */ | |
4686 | ptr--; | |
4687 | } | |
4688 | } | |
4689 | else { | |
4690 | ptr = b->end; | |
4691 | } | |
4692 | ptr -= cnt; | |
14a5cf38 JH |
4693 | } |
4694 | else { | |
1604cfb0 | 4695 | NOOP; |
3b4bd3fd | 4696 | #if 0 |
1604cfb0 MS |
4697 | /* |
4698 | * Test code - delete when it works ... | |
4699 | */ | |
4700 | IV flags = PerlIOBase(f)->flags; | |
4701 | STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; | |
4702 | if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == NATIVE_0xd) { | |
4703 | /* Deferred CR at end of buffer case - we lied about count */ | |
4704 | chk--; | |
4705 | } | |
4706 | chk -= cnt; | |
4707 | ||
4708 | if (ptr != chk ) { | |
4709 | Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf | |
4710 | " nl=%p e=%p for %d", (void*)ptr, (void*)chk, | |
4711 | flags, c->nl, b->end, cnt); | |
4712 | } | |
99ef548b | 4713 | #endif |
14a5cf38 JH |
4714 | } |
4715 | if (c->nl) { | |
1604cfb0 MS |
4716 | if (ptr > c->nl) { |
4717 | /* | |
4718 | * They have taken what we lied about | |
4719 | */ | |
4720 | *(c->nl) = NATIVE_0xd; | |
4721 | c->nl = NULL; | |
4722 | ptr++; | |
4723 | } | |
14a5cf38 JH |
4724 | } |
4725 | b->ptr = ptr; | |
4726 | PerlIOBase(f)->flags |= PERLIO_F_RDBUF; | |
99efab12 NIS |
4727 | } |
4728 | ||
4729 | SSize_t | |
f62ce20a | 4730 | PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
99efab12 | 4731 | { |
14a5cf38 | 4732 | if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) |
1604cfb0 | 4733 | return PerlIOBuf_write(aTHX_ f, vbuf, count); |
14a5cf38 | 4734 | else { |
1604cfb0 MS |
4735 | PerlIOBuf * const b = PerlIOSelf(f, PerlIOBuf); |
4736 | const STDCHAR *buf = (const STDCHAR *) vbuf; | |
4737 | const STDCHAR * const ebuf = buf + count; | |
4738 | if (!b->buf) | |
4739 | PerlIO_get_base(f); | |
4740 | if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) | |
4741 | return 0; | |
4742 | while (buf < ebuf) { | |
4743 | const STDCHAR * const eptr = b->buf + b->bufsiz; | |
4744 | PerlIOBase(f)->flags |= PERLIO_F_WRBUF; | |
4745 | while (buf < ebuf && b->ptr < eptr) { | |
4746 | if (*buf == '\n') { | |
4747 | if ((b->ptr + 2) > eptr) { | |
4748 | /* | |
4749 | * Not room for both | |
4750 | */ | |
4751 | PerlIO_flush(f); | |
4752 | break; | |
4753 | } | |
4754 | else { | |
4755 | *(b->ptr)++ = NATIVE_0xd; /* CR */ | |
4756 | *(b->ptr)++ = NATIVE_0xa; /* LF */ | |
4757 | buf++; | |
4758 | if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { | |
4759 | PerlIO_flush(f); | |
4760 | break; | |
4761 | } | |
4762 | } | |
4763 | } | |
4764 | else { | |
4765 | *(b->ptr)++ = *buf++; | |
4766 | } | |
4767 | if (b->ptr >= eptr) { | |
4768 | PerlIO_flush(f); | |
4769 | break; | |
4770 | } | |
4771 | } | |
4772 | } | |
4773 | if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) | |
4774 | PerlIO_flush(f); | |
4775 | return (buf - (STDCHAR *) vbuf); | |
14a5cf38 | 4776 | } |
99efab12 NIS |
4777 | } |
4778 | ||
4779 | IV | |
f62ce20a | 4780 | PerlIOCrlf_flush(pTHX_ PerlIO *f) |
99efab12 | 4781 | { |
dcda55fc | 4782 | PerlIOCrlf * const c = PerlIOSelf(f, PerlIOCrlf); |
14a5cf38 | 4783 | if (c->nl) { |
1604cfb0 MS |
4784 | *(c->nl) = NATIVE_0xd; |
4785 | c->nl = NULL; | |
14a5cf38 | 4786 | } |
f62ce20a | 4787 | return PerlIOBuf_flush(aTHX_ f); |
99efab12 NIS |
4788 | } |
4789 | ||
86e05cf2 NIS |
4790 | IV |
4791 | PerlIOCrlf_binmode(pTHX_ PerlIO *f) | |
4792 | { | |
4793 | if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { | |
1604cfb0 MS |
4794 | /* In text mode - flush any pending stuff and flip it */ |
4795 | PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; | |
86e05cf2 | 4796 | #ifndef PERLIO_USING_CRLF |
1604cfb0 MS |
4797 | /* CRLF is unusual case - if this is just the :crlf layer pop it */ |
4798 | PerlIO_pop(aTHX_ f); | |
86e05cf2 NIS |
4799 | #endif |
4800 | } | |
dda4a477 | 4801 | return PerlIOBase_binmode(aTHX_ f); |
86e05cf2 NIS |
4802 | } |
4803 | ||
27da23d5 | 4804 | PERLIO_FUNCS_DECL(PerlIO_crlf) = { |
2dc2558e | 4805 | sizeof(PerlIO_funcs), |
14a5cf38 JH |
4806 | "crlf", |
4807 | sizeof(PerlIOCrlf), | |
86e05cf2 | 4808 | PERLIO_K_BUFFERED | PERLIO_K_CANCRLF | PERLIO_K_RAW, |
14a5cf38 | 4809 | PerlIOCrlf_pushed, |
44798d05 | 4810 | PerlIOBuf_popped, /* popped */ |
14a5cf38 | 4811 | PerlIOBuf_open, |
86e05cf2 | 4812 | PerlIOCrlf_binmode, /* binmode */ |
14a5cf38 JH |
4813 | NULL, |
4814 | PerlIOBase_fileno, | |
71200d45 | 4815 | PerlIOBuf_dup, |
de009b76 | 4816 | PerlIOBuf_read, /* generic read works with ptr/cnt lies */ |
22569500 NIS |
4817 | PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ |
4818 | PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ | |
14a5cf38 JH |
4819 | PerlIOBuf_seek, |
4820 | PerlIOBuf_tell, | |
4821 | PerlIOBuf_close, | |
4822 | PerlIOCrlf_flush, | |
4823 | PerlIOBuf_fill, | |
4824 | PerlIOBase_eof, | |
4825 | PerlIOBase_error, | |
4826 | PerlIOBase_clearerr, | |
4827 | PerlIOBase_setlinebuf, | |
4828 | PerlIOBuf_get_base, | |
4829 | PerlIOBuf_bufsiz, | |
4830 | PerlIOBuf_get_ptr, | |
4831 | PerlIOCrlf_get_cnt, | |
4832 | PerlIOCrlf_set_ptrcnt, | |
66ecd56b NIS |
4833 | }; |
4834 | ||
9e353e3b | 4835 | PerlIO * |
e87a358a | 4836 | Perl_PerlIO_stdin(pTHX) |
9e353e3b | 4837 | { |
a1ea730d | 4838 | if (!PL_perlio) { |
1604cfb0 | 4839 | PerlIO_stdstreams(aTHX); |
14a5cf38 | 4840 | } |
3ae398fb | 4841 | return &PL_perlio[1].next; |
9e353e3b NIS |
4842 | } |
4843 | ||
9e353e3b | 4844 | PerlIO * |
e87a358a | 4845 | Perl_PerlIO_stdout(pTHX) |
9e353e3b | 4846 | { |
a1ea730d | 4847 | if (!PL_perlio) { |
1604cfb0 | 4848 | PerlIO_stdstreams(aTHX); |
14a5cf38 | 4849 | } |
3ae398fb | 4850 | return &PL_perlio[2].next; |
9e353e3b NIS |
4851 | } |
4852 | ||
9e353e3b | 4853 | PerlIO * |
e87a358a | 4854 | Perl_PerlIO_stderr(pTHX) |
9e353e3b | 4855 | { |
a1ea730d | 4856 | if (!PL_perlio) { |
1604cfb0 | 4857 | PerlIO_stdstreams(aTHX); |
14a5cf38 | 4858 | } |
3ae398fb | 4859 | return &PL_perlio[3].next; |
9e353e3b NIS |
4860 | } |
4861 | ||
4862 | /*--------------------------------------------------------------------------------------*/ | |
4863 | ||
9e353e3b NIS |
4864 | char * |
4865 | PerlIO_getname(PerlIO *f, char *buf) | |
4866 | { | |
a15cef0c | 4867 | #ifdef VMS |
dbf7dff6 | 4868 | dTHX; |
73d840c0 | 4869 | char *name = NULL; |
7659f319 | 4870 | bool exported = FALSE; |
14a5cf38 | 4871 | FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; |
7659f319 | 4872 | if (!stdio) { |
1604cfb0 MS |
4873 | stdio = PerlIO_exportFILE(f,0); |
4874 | exported = TRUE; | |
7659f319 CB |
4875 | } |
4876 | if (stdio) { | |
1604cfb0 MS |
4877 | name = fgetname(stdio, buf); |
4878 | if (exported) PerlIO_releaseFILE(f,stdio); | |
7659f319 | 4879 | } |
73d840c0 | 4880 | return name; |
a15cef0c | 4881 | #else |
8772537c AL |
4882 | PERL_UNUSED_ARG(f); |
4883 | PERL_UNUSED_ARG(buf); | |
dbf7dff6 | 4884 | Perl_croak_nocontext("Don't know how to get file name"); |
bd61b366 | 4885 | return NULL; |
a15cef0c | 4886 | #endif |
9e353e3b NIS |
4887 | } |
4888 | ||
4889 | ||
4890 | /*--------------------------------------------------------------------------------------*/ | |
14a5cf38 JH |
4891 | /* |
4892 | * Functions which can be called on any kind of PerlIO implemented in | |
71200d45 | 4893 | * terms of above |
14a5cf38 | 4894 | */ |
9e353e3b | 4895 | |
e87a358a NIS |
4896 | #undef PerlIO_fdopen |
4897 | PerlIO * | |
4898 | PerlIO_fdopen(int fd, const char *mode) | |
4899 | { | |
4900 | dTHX; | |
bd61b366 | 4901 | return PerlIO_openn(aTHX_ NULL, mode, fd, 0, 0, NULL, 0, NULL); |
e87a358a NIS |
4902 | } |
4903 | ||
4904 | #undef PerlIO_open | |
4905 | PerlIO * | |
4906 | PerlIO_open(const char *path, const char *mode) | |
4907 | { | |
4908 | dTHX; | |
c80a8618 | 4909 | SV *name = newSVpvn_flags(path, path == NULL ? 0 : strlen(path), SVs_TEMP); |
bd61b366 | 4910 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, NULL, 1, &name); |
e87a358a NIS |
4911 | } |
4912 | ||
4913 | #undef Perlio_reopen | |
4914 | PerlIO * | |
4915 | PerlIO_reopen(const char *path, const char *mode, PerlIO *f) | |
4916 | { | |
4917 | dTHX; | |
c80a8618 | 4918 | SV *name = newSVpvn_flags(path, path == NULL ? 0 : strlen(path), SVs_TEMP); |
bd61b366 | 4919 | return PerlIO_openn(aTHX_ NULL, mode, -1, 0, 0, f, 1, &name); |
e87a358a NIS |
4920 | } |
4921 | ||
9e353e3b | 4922 | #undef PerlIO_getc |
6f9d8c32 | 4923 | int |
9e353e3b | 4924 | PerlIO_getc(PerlIO *f) |
760ac839 | 4925 | { |
e87a358a | 4926 | dTHX; |
14a5cf38 | 4927 | STDCHAR buf[1]; |
de009b76 | 4928 | if ( 1 == PerlIO_read(f, buf, 1) ) { |
1604cfb0 | 4929 | return (unsigned char) buf[0]; |
14a5cf38 JH |
4930 | } |
4931 | return EOF; | |
313ca112 NIS |
4932 | } |
4933 | ||
4934 | #undef PerlIO_ungetc | |
4935 | int | |
4936 | PerlIO_ungetc(PerlIO *f, int ch) | |
4937 | { | |
e87a358a | 4938 | dTHX; |
14a5cf38 | 4939 | if (ch != EOF) { |
1604cfb0 MS |
4940 | STDCHAR buf = ch; |
4941 | if (PerlIO_unread(f, &buf, 1) == 1) | |
4942 | return ch; | |
14a5cf38 JH |
4943 | } |
4944 | return EOF; | |
760ac839 LW |
4945 | } |
4946 | ||
9e353e3b NIS |
4947 | #undef PerlIO_putc |
4948 | int | |
4949 | PerlIO_putc(PerlIO *f, int ch) | |
760ac839 | 4950 | { |
e87a358a | 4951 | dTHX; |
14a5cf38 JH |
4952 | STDCHAR buf = ch; |
4953 | return PerlIO_write(f, &buf, 1); | |
760ac839 LW |
4954 | } |
4955 | ||
9e353e3b | 4956 | #undef PerlIO_puts |
760ac839 | 4957 | int |
9e353e3b | 4958 | PerlIO_puts(PerlIO *f, const char *s) |
760ac839 | 4959 | { |
e87a358a | 4960 | dTHX; |
dcda55fc | 4961 | return PerlIO_write(f, s, strlen(s)); |
760ac839 LW |
4962 | } |
4963 | ||
4964 | #undef PerlIO_rewind | |
4965 | void | |
c78749f2 | 4966 | PerlIO_rewind(PerlIO *f) |
760ac839 | 4967 | { |
e87a358a | 4968 | dTHX; |
14a5cf38 JH |
4969 | PerlIO_seek(f, (Off_t) 0, SEEK_SET); |
4970 | PerlIO_clearerr(f); | |
6f9d8c32 NIS |
4971 | } |
4972 | ||
4973 | #undef PerlIO_vprintf | |
4974 | int | |
4975 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) | |
4976 | { | |
14a5cf38 | 4977 | dTHX; |
53ce71d3 | 4978 | SV * sv; |
b83604b4 | 4979 | const char *s; |
14a5cf38 JH |
4980 | STRLEN len; |
4981 | SSize_t wrote; | |
2cc61e15 | 4982 | #ifdef NEED_VA_COPY |
14a5cf38 JH |
4983 | va_list apc; |
4984 | Perl_va_copy(ap, apc); | |
53ce71d3 | 4985 | sv = vnewSVpvf(fmt, &apc); |
d4825b27 | 4986 | va_end(apc); |
2cc61e15 | 4987 | #else |
53ce71d3 | 4988 | sv = vnewSVpvf(fmt, &ap); |
2cc61e15 | 4989 | #endif |
b83604b4 | 4990 | s = SvPV_const(sv, len); |
14a5cf38 JH |
4991 | wrote = PerlIO_write(f, s, len); |
4992 | SvREFCNT_dec(sv); | |
4993 | return wrote; | |
760ac839 LW |
4994 | } |
4995 | ||
4996 | #undef PerlIO_printf | |
6f9d8c32 | 4997 | int |
14a5cf38 | 4998 | PerlIO_printf(PerlIO *f, const char *fmt, ...) |
760ac839 | 4999 | { |
14a5cf38 JH |
5000 | va_list ap; |
5001 | int result; | |
5002 | va_start(ap, fmt); | |
5003 | result = PerlIO_vprintf(f, fmt, ap); | |
5004 | va_end(ap); | |
5005 | return result; | |
760ac839 LW |
5006 | } |
5007 | ||
5008 | #undef PerlIO_stdoutf | |
6f9d8c32 | 5009 | int |
14a5cf38 | 5010 | PerlIO_stdoutf(const char *fmt, ...) |
760ac839 | 5011 | { |
e87a358a | 5012 | dTHX; |
14a5cf38 JH |
5013 | va_list ap; |
5014 | int result; | |
5015 | va_start(ap, fmt); | |
5016 | result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); | |
5017 | va_end(ap); | |
5018 | return result; | |
760ac839 LW |
5019 | } |
5020 | ||
5021 | #undef PerlIO_tmpfile | |
5022 | PerlIO * | |
c78749f2 | 5023 | PerlIO_tmpfile(void) |
760ac839 | 5024 | { |
ae73d7ec TC |
5025 | return PerlIO_tmpfile_flags(0); |
5026 | } | |
5027 | ||
5028 | #define MKOSTEMP_MODES ( O_RDWR | O_CREAT | O_EXCL ) | |
5029 | #define MKOSTEMP_MODE_MASK ( O_ACCMODE | O_CREAT | O_EXCL | O_TRUNC ) | |
5030 | ||
5031 | PerlIO * | |
5032 | PerlIO_tmpfile_flags(int imode) | |
5033 | { | |
dbf7dff6 | 5034 | #ifndef WIN32 |
2941a2e1 | 5035 | dTHX; |
dbf7dff6 | 5036 | #endif |
2941a2e1 | 5037 | PerlIO *f = NULL; |
2941a2e1 | 5038 | #ifdef WIN32 |
04247234 | 5039 | const int fd = win32_tmpfd_mode(imode); |
2941a2e1 | 5040 | if (fd >= 0) |
1604cfb0 | 5041 | f = PerlIO_fdopen(fd, "w+b"); |
74b421cc | 5042 | #elif ! defined(OS2) |
0b99e986 RGS |
5043 | int fd = -1; |
5044 | char tempname[] = "/tmp/PerlIO_XXXXXX"; | |
284167a5 | 5045 | const char * const tmpdir = TAINTING_get ? NULL : PerlEnv_getenv("TMPDIR"); |
525f6fe9 | 5046 | SV * sv = NULL; |
e57270be | 5047 | int old_umask = umask(0177); |
ae73d7ec | 5048 | imode &= ~MKOSTEMP_MODE_MASK; |
7299ca58 | 5049 | if (tmpdir && *tmpdir) { |
1604cfb0 MS |
5050 | /* if TMPDIR is set and not empty, we try that first */ |
5051 | sv = newSVpv(tmpdir, 0); | |
5052 | sv_catpv(sv, tempname + 4); | |
5053 | fd = Perl_my_mkostemp_cloexec(SvPVX(sv), imode | O_VMS_DELETEONCLOSE); | |
0b99e986 RGS |
5054 | } |
5055 | if (fd < 0) { | |
1604cfb0 MS |
5056 | SvREFCNT_dec(sv); |
5057 | sv = NULL; | |
5058 | /* else we try /tmp */ | |
5059 | fd = Perl_my_mkostemp_cloexec(tempname, imode | O_VMS_DELETEONCLOSE); | |
0b99e986 | 5060 | } |
b7561fc9 BF |
5061 | if (fd < 0) { |
5062 | /* Try cwd */ | |
5063 | sv = newSVpvs("."); | |
5064 | sv_catpv(sv, tempname + 4); | |
74b421cc | 5065 | fd = Perl_my_mkostemp_cloexec(SvPVX(sv), imode | O_VMS_DELETEONCLOSE); |
b7561fc9 | 5066 | } |
60f7fc1e | 5067 | umask(old_umask); |
2941a2e1 | 5068 | if (fd >= 0) { |
ae73d7ec TC |
5069 | /* fdopen() with a numeric mode */ |
5070 | char mode[8]; | |
5071 | int writing = 1; | |
5072 | (void)PerlIO_intmode2str(imode | MKOSTEMP_MODES, mode, &writing); | |
5073 | f = PerlIO_fdopen(fd, mode); | |
1604cfb0 MS |
5074 | if (f) |
5075 | PerlIOBase(f)->flags |= PERLIO_F_TEMP; | |
d0e4ea4d | 5076 | # ifndef VMS |
1604cfb0 | 5077 | PerlLIO_unlink(sv ? SvPVX_const(sv) : tempname); |
d0e4ea4d | 5078 | # endif |
2941a2e1 | 5079 | } |
ef8d46e8 | 5080 | SvREFCNT_dec(sv); |
faf55891 | 5081 | #else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */ |
c4420975 | 5082 | FILE * const stdio = PerlSIO_tmpfile(); |
2941a2e1 | 5083 | |
085e731f | 5084 | if (stdio) |
1604cfb0 | 5085 | f = PerlIO_fdopen(fileno(stdio), "w+"); |
085e731f | 5086 | |
2941a2e1 JH |
5087 | #endif /* else WIN32 */ |
5088 | return f; | |
760ac839 LW |
5089 | } |
5090 | ||
0ea86a10 FC |
5091 | void |
5092 | Perl_PerlIO_save_errno(pTHX_ PerlIO *f) | |
5093 | { | |
e9b8343f | 5094 | PERL_UNUSED_CONTEXT; |
0ea86a10 | 5095 | if (!PerlIOValid(f)) |
1604cfb0 | 5096 | return; |
0ea86a10 FC |
5097 | PerlIOBase(f)->err = errno; |
5098 | #ifdef VMS | |
5099 | PerlIOBase(f)->os_err = vaxc$errno; | |
5100 | #elif defined(OS2) | |
5101 | PerlIOBase(f)->os_err = Perl_rc; | |
5102 | #elif defined(WIN32) | |
5103 | PerlIOBase(f)->os_err = GetLastError(); | |
5104 | #endif | |
5105 | } | |
5106 | ||
5107 | void | |
5108 | Perl_PerlIO_restore_errno(pTHX_ PerlIO *f) | |
5109 | { | |
e9b8343f | 5110 | PERL_UNUSED_CONTEXT; |
0ea86a10 | 5111 | if (!PerlIOValid(f)) |
1604cfb0 | 5112 | return; |
0ea86a10 FC |
5113 | SETERRNO(PerlIOBase(f)->err, PerlIOBase(f)->os_err); |
5114 | #ifdef OS2 | |
5115 | Perl_rc = PerlIOBase(f)->os_err); | |
5116 | #elif defined(WIN32) | |
5117 | SetLastError(PerlIOBase(f)->os_err); | |
5118 | #endif | |
5119 | } | |
5120 | ||
6f9d8c32 NIS |
5121 | #undef HAS_FSETPOS |
5122 | #undef HAS_FGETPOS | |
5123 | ||
760ac839 | 5124 | |
9e353e3b | 5125 | /*======================================================================================*/ |
14a5cf38 | 5126 | /* |
71200d45 NIS |
5127 | * Now some functions in terms of above which may be needed even if we are |
5128 | * not in true PerlIO mode | |
9e353e3b | 5129 | */ |
188f0c84 YO |
5130 | const char * |
5131 | Perl_PerlIO_context_layers(pTHX_ const char *mode) | |
5132 | { | |
4ce49cf5 KW |
5133 | /* Returns the layers set by "use open" */ |
5134 | ||
8b850bd5 NC |
5135 | const char *direction = NULL; |
5136 | SV *layers; | |
188f0c84 YO |
5137 | /* |
5138 | * Need to supply default layer info from open.pm | |
5139 | */ | |
8b850bd5 NC |
5140 | |
5141 | if (!PL_curcop) | |
1604cfb0 | 5142 | return NULL; |
8b850bd5 NC |
5143 | |
5144 | if (mode && mode[0] != 'r') { | |
1604cfb0 MS |
5145 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_OUT) |
5146 | direction = "open>"; | |
8b850bd5 | 5147 | } else { |
1604cfb0 MS |
5148 | if (PL_curcop->cop_hints & HINT_LEXICAL_IO_IN) |
5149 | direction = "open<"; | |
188f0c84 | 5150 | } |
8b850bd5 | 5151 | if (!direction) |
1604cfb0 | 5152 | return NULL; |
8b850bd5 | 5153 | |
20439bc7 | 5154 | layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0); |
8b850bd5 NC |
5155 | |
5156 | assert(layers); | |
5157 | return SvOK(layers) ? SvPV_nolen_const(layers) : NULL; | |
188f0c84 YO |
5158 | } |
5159 | ||
9e353e3b | 5160 | |
760ac839 | 5161 | #ifndef HAS_FSETPOS |
d0e4ea4d | 5162 | # undef PerlIO_setpos |
760ac839 | 5163 | int |
766a733e | 5164 | PerlIO_setpos(PerlIO *f, SV *pos) |
760ac839 | 5165 | { |
14a5cf38 | 5166 | if (SvOK(pos)) { |
1604cfb0 MS |
5167 | if (f) { |
5168 | dTHX; | |
5169 | STRLEN len; | |
5170 | const Off_t * const posn = (Off_t *) SvPV(pos, len); | |
5171 | if(len == sizeof(Off_t)) | |
5172 | return PerlIO_seek(f, *posn, SEEK_SET); | |
5173 | } | |
14a5cf38 | 5174 | } |
93189314 | 5175 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5176 | return -1; |
760ac839 | 5177 | } |
c411622e | 5178 | #else |
d0e4ea4d | 5179 | # undef PerlIO_setpos |
c411622e | 5180 | int |
766a733e | 5181 | PerlIO_setpos(PerlIO *f, SV *pos) |
c411622e | 5182 | { |
14a5cf38 | 5183 | if (SvOK(pos)) { |
1604cfb0 MS |
5184 | if (f) { |
5185 | dTHX; | |
5186 | STRLEN len; | |
5187 | Fpos_t * const fpos = (Fpos_t *) SvPV(pos, len); | |
5188 | if(len == sizeof(Fpos_t)) | |
d0e4ea4d | 5189 | # if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
1604cfb0 | 5190 | return fsetpos64(f, fpos); |
d0e4ea4d | 5191 | # else |
1604cfb0 | 5192 | return fsetpos(f, fpos); |
d0e4ea4d | 5193 | # endif |
1604cfb0 | 5194 | } |
766a733e | 5195 | } |
93189314 | 5196 | SETERRNO(EINVAL, SS_IVCHAN); |
14a5cf38 | 5197 | return -1; |
c411622e | 5198 | } |
5199 | #endif | |
760ac839 LW |
5200 | |
5201 | #ifndef HAS_FGETPOS | |
d0e4ea4d | 5202 | # undef PerlIO_getpos |
760ac839 | 5203 | int |
766a733e | 5204 | PerlIO_getpos(PerlIO *f, SV *pos) |
760ac839 | 5205 | { |
14a5cf38 JH |
5206 | dTHX; |
5207 | Off_t posn = PerlIO_tell(f); | |
5208 | sv_setpvn(pos, (char *) &posn, sizeof(posn)); | |
5209 | return (posn == (Off_t) - 1) ? -1 : 0; | |
760ac839 | 5210 | } |
c411622e | 5211 | #else |
d0e4ea4d | 5212 | # undef PerlIO_getpos |
c411622e | 5213 | int |
766a733e | 5214 | PerlIO_getpos(PerlIO *f, SV *pos) |
c411622e | 5215 | { |
14a5cf38 JH |
5216 | dTHX; |
5217 | Fpos_t fpos; | |
5218 | int code; | |
d0e4ea4d | 5219 | # if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) |
14a5cf38 | 5220 | code = fgetpos64(f, &fpos); |
d0e4ea4d | 5221 | # else |
14a5cf38 | 5222 | code = fgetpos(f, &fpos); |
d0e4ea4d | 5223 | # endif |
14a5cf38 JH |
5224 | sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); |
5225 | return code; | |
c411622e | 5226 | } |
5227 | #endif | |
760ac839 | 5228 | |
db6e00bd DD |
5229 | /* print a failure format string message to stderr and fail exit the process |
5230 | using only libc without depending on any perl data structures being | |
5231 | initialized. | |
5232 | */ | |
5233 | ||
5234 | void | |
5235 | Perl_noperl_die(const char* pat, ...) | |
5236 | { | |
fc917fff | 5237 | va_list arglist; |
db6e00bd DD |
5238 | PERL_ARGS_ASSERT_NOPERL_DIE; |
5239 | va_start(arglist, pat); | |
5240 | vfprintf(stderr, pat, arglist); | |
5241 | va_end(arglist); | |
5242 | exit(1); | |
5243 | } | |
5244 | ||
9cfa90c0 | 5245 | /* |
14d04a33 | 5246 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 5247 | */ |