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