Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* doio.c |
a687059c | 2 | * |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
a687059c | 5 | * |
6e21c824 LW |
6 | * You may distribute under the terms of either the GNU General Public |
7 | * License or the Artistic License, as specified in the README file. | |
a687059c | 8 | * |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
4ac71550 TC |
12 | * Far below them they saw the white waters pour into a foaming bowl, and |
13 | * then swirl darkly about a deep oval basin in the rocks, until they found | |
14 | * their way out again through a narrow gate, and flowed away, fuming and | |
15 | * chattering, into calmer and more level reaches. | |
16 | * | |
17 | * [p.684 of _The Lord of the Rings_, IV/vi: "The Forbidden Pool"] | |
a687059c LW |
18 | */ |
19 | ||
166f8a29 DM |
20 | /* This file contains functions that do the actual I/O on behalf of ops. |
21 | * For example, pp_print() calls the do_print() function in this file for | |
22 | * each argument needing printing. | |
23 | */ | |
24 | ||
a687059c | 25 | #include "EXTERN.h" |
864dbfa3 | 26 | #define PERL_IN_DOIO_C |
a687059c LW |
27 | #include "perl.h" |
28 | ||
fe14fcc3 | 29 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
aec308ec | 30 | #ifndef HAS_SEM |
c2ab57d4 | 31 | #include <sys/ipc.h> |
aec308ec | 32 | #endif |
fe14fcc3 | 33 | #ifdef HAS_MSG |
c2ab57d4 | 34 | #include <sys/msg.h> |
e5d73d77 | 35 | #endif |
fe14fcc3 | 36 | #ifdef HAS_SHM |
c2ab57d4 | 37 | #include <sys/shm.h> |
a0d0e21e | 38 | # ifndef HAS_SHMAT_PROTOTYPE |
20ce7b12 | 39 | extern Shmat_t shmat (int, char *, int); |
a0d0e21e | 40 | # endif |
c2ab57d4 | 41 | #endif |
e5d73d77 | 42 | #endif |
c2ab57d4 | 43 | |
663a0e37 | 44 | #ifdef I_UTIME |
3730b96e | 45 | # if defined(_MSC_VER) || defined(__MINGW32__) |
3fe9a6f1 | 46 | # include <sys/utime.h> |
47 | # else | |
48 | # include <utime.h> | |
49 | # endif | |
663a0e37 | 50 | #endif |
85aff577 | 51 | |
85aff577 CS |
52 | #ifdef O_EXCL |
53 | # define OPEN_EXCL O_EXCL | |
54 | #else | |
55 | # define OPEN_EXCL 0 | |
56 | #endif | |
a687059c | 57 | |
0c19750d SP |
58 | #define PERL_MODE_MAX 8 |
59 | #define PERL_FLAGS_MAX 10 | |
60 | ||
76121258 | 61 | #include <signal.h> |
76121258 | 62 | |
74df577f | 63 | void |
1cdb2692 | 64 | Perl_setfd_cloexec(int fd) |
74df577f Z |
65 | { |
66 | assert(fd >= 0); | |
f9821aff | 67 | #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC) |
74df577f | 68 | (void) fcntl(fd, F_SETFD, FD_CLOEXEC); |
f9821aff | 69 | #endif |
74df577f Z |
70 | } |
71 | ||
72 | void | |
1cdb2692 | 73 | Perl_setfd_inhexec(int fd) |
74df577f Z |
74 | { |
75 | assert(fd >= 0); | |
76 | #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC) | |
77 | (void) fcntl(fd, F_SETFD, 0); | |
78 | #endif | |
79 | } | |
80 | ||
81 | void | |
884fc2d3 Z |
82 | Perl_setfd_cloexec_for_nonsysfd(pTHX_ int fd) |
83 | { | |
84 | assert(fd >= 0); | |
85 | if(fd > PL_maxsysfd) | |
86 | setfd_cloexec(fd); | |
87 | } | |
88 | ||
89 | void | |
74df577f Z |
90 | Perl_setfd_inhexec_for_sysfd(pTHX_ int fd) |
91 | { | |
92 | assert(fd >= 0); | |
93 | if(fd <= PL_maxsysfd) | |
94 | setfd_inhexec(fd); | |
95 | } | |
884fc2d3 Z |
96 | void |
97 | Perl_setfd_cloexec_or_inhexec_by_sysfdness(pTHX_ int fd) | |
98 | { | |
99 | assert(fd >= 0); | |
100 | if(fd <= PL_maxsysfd) | |
101 | setfd_inhexec(fd); | |
102 | else | |
103 | setfd_cloexec(fd); | |
104 | } | |
105 | ||
74df577f Z |
106 | |
107 | #define DO_GENOPEN_THEN_CLOEXEC(GENOPEN_NORMAL, GENSETFD_CLOEXEC) \ | |
f9821aff Z |
108 | do { \ |
109 | int res = (GENOPEN_NORMAL); \ | |
74df577f | 110 | if(LIKELY(res != -1)) GENSETFD_CLOEXEC; \ |
f9821aff Z |
111 | return res; \ |
112 | } while(0) | |
113 | #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC) && \ | |
114 | defined(F_GETFD) | |
115 | enum { CLOEXEC_EXPERIMENT, CLOEXEC_AT_OPEN, CLOEXEC_AFTER_OPEN }; | |
116 | # define DO_GENOPEN_EXPERIMENTING_CLOEXEC(TESTFD, GENOPEN_CLOEXEC, \ | |
74df577f | 117 | GENOPEN_NORMAL, GENSETFD_CLOEXEC) \ |
f9821aff Z |
118 | do { \ |
119 | static int strategy = CLOEXEC_EXPERIMENT; \ | |
120 | switch (strategy) { \ | |
121 | case CLOEXEC_EXPERIMENT: default: { \ | |
122 | int res = (GENOPEN_CLOEXEC), eno; \ | |
123 | if (LIKELY(res != -1)) { \ | |
124 | int fdflags = fcntl((TESTFD), F_GETFD); \ | |
125 | if (LIKELY(fdflags != -1) && \ | |
126 | LIKELY(fdflags & FD_CLOEXEC)) { \ | |
127 | strategy = CLOEXEC_AT_OPEN; \ | |
128 | } else { \ | |
129 | strategy = CLOEXEC_AFTER_OPEN; \ | |
74df577f | 130 | GENSETFD_CLOEXEC; \ |
f9821aff Z |
131 | } \ |
132 | } else if (UNLIKELY((eno = errno) == EINVAL || \ | |
133 | eno == ENOSYS)) { \ | |
134 | res = (GENOPEN_NORMAL); \ | |
135 | if (LIKELY(res != -1)) { \ | |
136 | strategy = CLOEXEC_AFTER_OPEN; \ | |
74df577f | 137 | GENSETFD_CLOEXEC; \ |
f9821aff Z |
138 | } else if (!LIKELY((eno = errno) == EINVAL || \ |
139 | eno == ENOSYS)) { \ | |
140 | strategy = CLOEXEC_AFTER_OPEN; \ | |
141 | } \ | |
142 | } \ | |
143 | return res; \ | |
144 | } \ | |
145 | case CLOEXEC_AT_OPEN: \ | |
146 | return (GENOPEN_CLOEXEC); \ | |
147 | case CLOEXEC_AFTER_OPEN: \ | |
74df577f | 148 | DO_GENOPEN_THEN_CLOEXEC(GENOPEN_NORMAL, GENSETFD_CLOEXEC); \ |
f9821aff Z |
149 | } \ |
150 | } while(0) | |
151 | #else | |
152 | # define DO_GENOPEN_EXPERIMENTING_CLOEXEC(TESTFD, GENOPEN_CLOEXEC, \ | |
74df577f Z |
153 | GENOPEN_NORMAL, GENSETFD_CLOEXEC) \ |
154 | DO_GENOPEN_THEN_CLOEXEC(GENOPEN_NORMAL, GENSETFD_CLOEXEC) | |
f9821aff Z |
155 | #endif |
156 | ||
157 | #define DO_ONEOPEN_THEN_CLOEXEC(ONEOPEN_NORMAL) \ | |
158 | do { \ | |
159 | int fd; \ | |
160 | DO_GENOPEN_THEN_CLOEXEC(fd = (ONEOPEN_NORMAL), \ | |
74df577f | 161 | setfd_cloexec(fd)); \ |
f9821aff Z |
162 | } while(0) |
163 | #define DO_ONEOPEN_EXPERIMENTING_CLOEXEC(ONEOPEN_CLOEXEC, ONEOPEN_NORMAL) \ | |
164 | do { \ | |
165 | int fd; \ | |
166 | DO_GENOPEN_EXPERIMENTING_CLOEXEC(fd, fd = (ONEOPEN_CLOEXEC), \ | |
74df577f | 167 | fd = (ONEOPEN_NORMAL), setfd_cloexec(fd)); \ |
f9821aff Z |
168 | } while(0) |
169 | ||
74df577f | 170 | #define DO_PIPESETFD_CLOEXEC(PIPEFD) \ |
f9821aff | 171 | do { \ |
74df577f Z |
172 | setfd_cloexec((PIPEFD)[0]); \ |
173 | setfd_cloexec((PIPEFD)[1]); \ | |
f9821aff Z |
174 | } while(0) |
175 | #define DO_PIPEOPEN_THEN_CLOEXEC(PIPEFD, PIPEOPEN_NORMAL) \ | |
74df577f | 176 | DO_GENOPEN_THEN_CLOEXEC(PIPEOPEN_NORMAL, DO_PIPESETFD_CLOEXEC(PIPEFD)) |
f9821aff Z |
177 | #define DO_PIPEOPEN_EXPERIMENTING_CLOEXEC(PIPEFD, PIPEOPEN_CLOEXEC, \ |
178 | PIPEOPEN_NORMAL) \ | |
179 | DO_GENOPEN_EXPERIMENTING_CLOEXEC((PIPEFD)[0], PIPEOPEN_CLOEXEC, \ | |
74df577f | 180 | PIPEOPEN_NORMAL, DO_PIPESETFD_CLOEXEC(PIPEFD)) |
f9821aff Z |
181 | |
182 | int | |
183 | Perl_PerlLIO_dup_cloexec(pTHX_ int oldfd) | |
184 | { | |
185 | #if !defined(PERL_IMPLICIT_SYS) && defined(F_DUPFD_CLOEXEC) | |
186 | /* | |
187 | * struct IPerlLIO doesn't cover fcntl(), and there's no clear way | |
188 | * to extend it, so for the time being this just isn't available on | |
189 | * PERL_IMPLICIT_SYS builds. | |
190 | */ | |
191 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
192 | fcntl(oldfd, F_DUPFD_CLOEXEC, 0), | |
193 | PerlLIO_dup(oldfd)); | |
194 | #else | |
195 | DO_ONEOPEN_THEN_CLOEXEC(PerlLIO_dup(oldfd)); | |
196 | #endif | |
197 | } | |
198 | ||
199 | int | |
200 | Perl_PerlLIO_dup2_cloexec(pTHX_ int oldfd, int newfd) | |
201 | { | |
202 | #if !defined(PERL_IMPLICIT_SYS) && defined(HAS_DUP3) && defined(O_CLOEXEC) | |
203 | /* | |
204 | * struct IPerlLIO doesn't cover dup3(), and there's no clear way | |
205 | * to extend it, so for the time being this just isn't available on | |
206 | * PERL_IMPLICIT_SYS builds. | |
207 | */ | |
208 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
209 | dup3(oldfd, newfd, O_CLOEXEC), | |
210 | PerlLIO_dup2(oldfd, newfd)); | |
211 | #else | |
212 | DO_ONEOPEN_THEN_CLOEXEC(PerlLIO_dup2(oldfd, newfd)); | |
213 | #endif | |
214 | } | |
215 | ||
216 | int | |
217 | Perl_PerlLIO_open_cloexec(pTHX_ const char *file, int flag) | |
218 | { | |
219 | PERL_ARGS_ASSERT_PERLLIO_OPEN_CLOEXEC; | |
220 | #if defined(O_CLOEXEC) | |
221 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
222 | PerlLIO_open(file, flag | O_CLOEXEC), | |
223 | PerlLIO_open(file, flag)); | |
224 | #else | |
225 | DO_ONEOPEN_THEN_CLOEXEC(PerlLIO_open(file, flag)); | |
226 | #endif | |
227 | } | |
228 | ||
229 | int | |
230 | Perl_PerlLIO_open3_cloexec(pTHX_ const char *file, int flag, int perm) | |
231 | { | |
232 | PERL_ARGS_ASSERT_PERLLIO_OPEN3_CLOEXEC; | |
233 | #if defined(O_CLOEXEC) | |
234 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
235 | PerlLIO_open3(file, flag | O_CLOEXEC, perm), | |
236 | PerlLIO_open3(file, flag, perm)); | |
237 | #else | |
238 | DO_ONEOPEN_THEN_CLOEXEC(PerlLIO_open3(file, flag, perm)); | |
239 | #endif | |
240 | } | |
241 | ||
1cdb2692 Z |
242 | int |
243 | Perl_my_mkstemp_cloexec(char *templte) | |
244 | { | |
245 | PERL_ARGS_ASSERT_MY_MKSTEMP_CLOEXEC; | |
246 | #if defined(O_CLOEXEC) | |
247 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
248 | Perl_my_mkostemp(templte, O_CLOEXEC), | |
249 | Perl_my_mkstemp(templte)); | |
250 | #else | |
251 | DO_ONEOPEN_THEN_CLOEXEC(Perl_my_mkstemp(templte)); | |
252 | #endif | |
253 | } | |
254 | ||
f9821aff Z |
255 | #ifdef HAS_PIPE |
256 | int | |
257 | Perl_PerlProc_pipe_cloexec(pTHX_ int *pipefd) | |
258 | { | |
259 | PERL_ARGS_ASSERT_PERLPROC_PIPE_CLOEXEC; | |
260 | /* | |
261 | * struct IPerlProc doesn't cover pipe2(), and there's no clear way | |
262 | * to extend it, so for the time being this just isn't available on | |
263 | * PERL_IMPLICIT_SYS builds. | |
264 | */ | |
265 | # if !defined(PERL_IMPLICIT_SYS) && defined(HAS_PIPE2) && defined(O_CLOEXEC) | |
266 | DO_PIPEOPEN_EXPERIMENTING_CLOEXEC(pipefd, | |
267 | pipe2(pipefd, O_CLOEXEC), | |
268 | PerlProc_pipe(pipefd)); | |
269 | # else | |
270 | DO_PIPEOPEN_THEN_CLOEXEC(pipefd, PerlProc_pipe(pipefd)); | |
271 | # endif | |
272 | } | |
273 | #endif | |
274 | ||
275 | #ifdef HAS_SOCKET | |
276 | ||
277 | int | |
278 | Perl_PerlSock_socket_cloexec(pTHX_ int domain, int type, int protocol) | |
279 | { | |
280 | # if defined(SOCK_CLOEXEC) | |
281 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
282 | PerlSock_socket(domain, type | SOCK_CLOEXEC, protocol), | |
283 | PerlSock_socket(domain, type, protocol)); | |
284 | # else | |
285 | DO_ONEOPEN_THEN_CLOEXEC(PerlSock_socket(domain, type, protocol)); | |
286 | # endif | |
287 | } | |
288 | ||
289 | int | |
290 | Perl_PerlSock_accept_cloexec(pTHX_ int listenfd, struct sockaddr *addr, | |
291 | Sock_size_t *addrlen) | |
292 | { | |
293 | # if !defined(PERL_IMPLICIT_SYS) && \ | |
294 | defined(HAS_ACCEPT4) && defined(SOCK_CLOEXEC) | |
295 | /* | |
296 | * struct IPerlSock doesn't cover accept4(), and there's no clear | |
297 | * way to extend it, so for the time being this just isn't available | |
298 | * on PERL_IMPLICIT_SYS builds. | |
299 | */ | |
300 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
301 | accept4(listenfd, addr, addrlen, SOCK_CLOEXEC), | |
302 | PerlSock_accept(listenfd, addr, addrlen)); | |
303 | # else | |
304 | DO_ONEOPEN_THEN_CLOEXEC(PerlSock_accept(listenfd, addr, addrlen)); | |
305 | # endif | |
306 | } | |
307 | ||
308 | #endif | |
309 | ||
310 | #if defined (HAS_SOCKETPAIR) || \ | |
311 | (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && \ | |
312 | defined(AF_INET) && defined(PF_INET)) | |
313 | int | |
314 | Perl_PerlSock_socketpair_cloexec(pTHX_ int domain, int type, int protocol, | |
315 | int *pairfd) | |
316 | { | |
317 | PERL_ARGS_ASSERT_PERLSOCK_SOCKETPAIR_CLOEXEC; | |
318 | # ifdef SOCK_CLOEXEC | |
319 | DO_PIPEOPEN_EXPERIMENTING_CLOEXEC(pairfd, | |
320 | PerlSock_socketpair(domain, type | SOCK_CLOEXEC, protocol, pairfd), | |
321 | PerlSock_socketpair(domain, type, protocol, pairfd)); | |
322 | # else | |
323 | DO_PIPEOPEN_THEN_CLOEXEC(pairfd, | |
324 | PerlSock_socketpair(domain, type, protocol, pairfd)); | |
325 | # endif | |
326 | } | |
327 | #endif | |
328 | ||
a2b41d5c NC |
329 | static IO * |
330 | S_openn_setup(pTHX_ GV *gv, char *mode, PerlIO **saveifp, PerlIO **saveofp, | |
331 | int *savefd, char *savetype) | |
a567e93b | 332 | { |
eb578fdb | 333 | IO * const io = GvIOn(gv); |
a687059c | 334 | |
a2b41d5c NC |
335 | PERL_ARGS_ASSERT_OPENN_SETUP; |
336 | ||
337 | *saveifp = NULL; | |
338 | *saveofp = NULL; | |
339 | *savefd = -1; | |
340 | *savetype = IoTYPE_CLOSED; | |
7918f24d | 341 | |
b931b1d9 | 342 | Zero(mode,sizeof(mode),char); |
3280af22 | 343 | PL_forkprocess = 1; /* assume true if no fork */ |
c07a80fd | 344 | |
b931b1d9 | 345 | /* If currently open - close before we re-open */ |
a0d0e21e | 346 | if (IoIFP(io)) { |
ee518936 NIS |
347 | if (IoTYPE(io) == IoTYPE_STD) { |
348 | /* This is a clone of one of STD* handles */ | |
ee518936 | 349 | } |
26297fe9 NC |
350 | else { |
351 | const int old_fd = PerlIO_fileno(IoIFP(io)); | |
352 | ||
353 | if (old_fd >= 0 && old_fd <= PL_maxsysfd) { | |
354 | /* This is one of the original STD* handles */ | |
a2b41d5c NC |
355 | *saveifp = IoIFP(io); |
356 | *saveofp = IoOFP(io); | |
357 | *savetype = IoTYPE(io); | |
358 | *savefd = old_fd; | |
26297fe9 NC |
359 | } |
360 | else { | |
361 | int result; | |
362 | ||
363 | if (IoTYPE(io) == IoTYPE_PIPE) | |
364 | result = PerlProc_pclose(IoIFP(io)); | |
365 | else if (IoIFP(io) != IoOFP(io)) { | |
366 | if (IoOFP(io)) { | |
367 | result = PerlIO_close(IoOFP(io)); | |
368 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ | |
369 | } | |
370 | else | |
371 | result = PerlIO_close(IoIFP(io)); | |
372 | } | |
373 | else | |
374 | result = PerlIO_close(IoIFP(io)); | |
375 | ||
376 | if (result == EOF && old_fd > PL_maxsysfd) { | |
377 | /* Why is this not Perl_warn*() call ? */ | |
378 | PerlIO_printf(Perl_error_log, | |
147e3846 KW |
379 | "Warning: unable to close filehandle %" HEKf |
380 | " properly.\n", | |
26297fe9 NC |
381 | HEKfARG(GvENAME_HEK(gv)) |
382 | ); | |
383 | } | |
384 | } | |
385 | } | |
4608196e | 386 | IoOFP(io) = IoIFP(io) = NULL; |
a687059c | 387 | } |
a2b41d5c NC |
388 | return io; |
389 | } | |
390 | ||
391 | bool | |
392 | Perl_do_openn(pTHX_ GV *gv, const char *oname, I32 len, int as_raw, | |
393 | int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp, | |
394 | I32 num_svs) | |
395 | { | |
4b451737 NC |
396 | PERL_ARGS_ASSERT_DO_OPENN; |
397 | ||
398 | if (as_raw) { | |
399 | /* sysopen style args, i.e. integer mode and permissions */ | |
400 | ||
401 | if (num_svs != 0) { | |
402 | Perl_croak(aTHX_ "panic: sysopen with multiple args, num_svs=%ld", | |
403 | (long) num_svs); | |
404 | } | |
7e30e49f | 405 | return do_open_raw(gv, oname, len, rawmode, rawperm, NULL); |
4b451737 NC |
406 | } |
407 | return do_open6(gv, oname, len, supplied_fp, svp, num_svs); | |
408 | } | |
409 | ||
410 | bool | |
411 | Perl_do_open_raw(pTHX_ GV *gv, const char *oname, STRLEN len, | |
7e30e49f | 412 | int rawmode, int rawperm, Stat_t *statbufp) |
4b451737 | 413 | { |
a2b41d5c NC |
414 | PerlIO *saveifp; |
415 | PerlIO *saveofp; | |
416 | int savefd; | |
417 | char savetype; | |
418 | char mode[PERL_MODE_MAX]; /* file mode ("r\0", "rb\0", "ab\0" etc.) */ | |
419 | IO * const io = openn_setup(gv, mode, &saveifp, &saveofp, &savefd, &savetype); | |
420 | int writing = 0; | |
421 | PerlIO *fp; | |
a2b41d5c | 422 | |
4b451737 | 423 | PERL_ARGS_ASSERT_DO_OPEN_RAW; |
c07a80fd | 424 | |
4b451737 NC |
425 | /* For ease of blame back to 5.000, keep the existing indenting. */ |
426 | { | |
b931b1d9 | 427 | /* sysopen style args, i.e. integer mode and permissions */ |
ee518936 | 428 | STRLEN ix = 0; |
e1ec3a88 | 429 | const int appendtrunc = |
3dccc55c | 430 | 0 |
d1da7611 | 431 | #ifdef O_APPEND /* Not fully portable. */ |
3dccc55c | 432 | |O_APPEND |
d1da7611 JH |
433 | #endif |
434 | #ifdef O_TRUNC /* Not fully portable. */ | |
3dccc55c | 435 | |O_TRUNC |
d1da7611 | 436 | #endif |
3dccc55c | 437 | ; |
6867be6d | 438 | const int modifyingmode = O_WRONLY|O_RDWR|O_CREAT|appendtrunc; |
3dccc55c | 439 | int ismodifying; |
9229bf8d | 440 | SV *namesv; |
3dccc55c | 441 | |
3dccc55c JH |
442 | /* It's not always |
443 | ||
444 | O_RDONLY 0 | |
445 | O_WRONLY 1 | |
446 | O_RDWR 2 | |
447 | ||
448 | It might be (in OS/390 and Mac OS Classic it is) | |
449 | ||
450 | O_WRONLY 1 | |
451 | O_RDONLY 2 | |
452 | O_RDWR 3 | |
453 | ||
454 | This means that simple & with O_RDWR would look | |
455 | like O_RDONLY is present. Therefore we have to | |
456 | be more careful. | |
457 | */ | |
458 | if ((ismodifying = (rawmode & modifyingmode))) { | |
459 | if ((ismodifying & O_WRONLY) == O_WRONLY || | |
460 | (ismodifying & O_RDWR) == O_RDWR || | |
461 | (ismodifying & (O_CREAT|appendtrunc))) | |
462 | TAINT_PROPER("sysopen"); | |
463 | } | |
3b6c1aba | 464 | mode[ix++] = IoTYPE_NUMERIC; /* Marker to openn to use numeric "sysopen" */ |
b931b1d9 | 465 | |
09458382 | 466 | #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE) |
b94c04ac | 467 | rawmode |= O_LARGEFILE; /* Transparently largefiley. */ |
5ff3f7a4 GS |
468 | #endif |
469 | ||
06c7082d | 470 | IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing); |
ee518936 | 471 | |
59cd0e26 | 472 | namesv = newSVpvn_flags(oname, len, SVs_TEMP); |
4b451737 | 473 | fp = PerlIO_openn(aTHX_ NULL, mode, -1, rawmode, rawperm, NULL, 1, &namesv); |
a687059c | 474 | } |
4b451737 | 475 | return openn_cleanup(gv, io, fp, mode, oname, saveifp, saveofp, savefd, |
7e30e49f | 476 | savetype, writing, 0, NULL, statbufp); |
4b451737 NC |
477 | } |
478 | ||
479 | bool | |
480 | Perl_do_open6(pTHX_ GV *gv, const char *oname, STRLEN len, | |
481 | PerlIO *supplied_fp, SV **svp, U32 num_svs) | |
482 | { | |
4b451737 NC |
483 | PerlIO *saveifp; |
484 | PerlIO *saveofp; | |
485 | int savefd; | |
486 | char savetype; | |
487 | char mode[PERL_MODE_MAX]; /* file mode ("r\0", "rb\0", "ab\0" etc.) */ | |
488 | IO * const io = openn_setup(gv, mode, &saveifp, &saveofp, &savefd, &savetype); | |
489 | int writing = 0; | |
490 | PerlIO *fp; | |
491 | bool was_fdopen = FALSE; | |
492 | char *type = NULL; | |
493 | ||
494 | PERL_ARGS_ASSERT_DO_OPEN6; | |
495 | ||
496 | /* For ease of blame back to 5.000, keep the existing indenting. */ | |
497 | { | |
b931b1d9 | 498 | /* Regular (non-sys) open */ |
2fbb330f | 499 | char *name; |
faecd977 | 500 | STRLEN olen = len; |
b931b1d9 NIS |
501 | char *tend; |
502 | int dodup = 0; | |
c564b489 NC |
503 | bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0; |
504 | ||
505 | /* Collect default raw/crlf info from the op */ | |
506 | if (PL_op && PL_op->op_type == OP_OPEN) { | |
507 | /* set up IO layers */ | |
508 | const U8 flags = PL_op->op_private; | |
509 | in_raw = (flags & OPpOPEN_IN_RAW); | |
510 | in_crlf = (flags & OPpOPEN_IN_CRLF); | |
511 | out_raw = (flags & OPpOPEN_OUT_RAW); | |
512 | out_crlf = (flags & OPpOPEN_OUT_CRLF); | |
513 | } | |
c07a80fd | 514 | |
2fbb330f | 515 | type = savepvn(oname, len); |
b931b1d9 | 516 | tend = type+len; |
faecd977 | 517 | SAVEFREEPV(type); |
eb649f83 AMS |
518 | |
519 | /* Lose leading and trailing white space */ | |
294b3b39 AL |
520 | while (isSPACE(*type)) |
521 | type++; | |
eb649f83 AMS |
522 | while (tend > type && isSPACE(tend[-1])) |
523 | *--tend = '\0'; | |
524 | ||
6170680b | 525 | if (num_svs) { |
41188aa0 TC |
526 | const char *p; |
527 | STRLEN nlen = 0; | |
c2be40b1 | 528 | /* New style explicit name, type is just mode and layer info */ |
9a869a14 | 529 | #ifdef USE_STDIO |
9a73c0b8 | 530 | if (SvROK(*svp) && !memchr(oname, '&', len)) { |
9a869a14 RGS |
531 | if (ckWARN(WARN_IO)) |
532 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
533 | "Can't open a reference"); | |
93189314 | 534 | SETERRNO(EINVAL, LIB_INVARG); |
a6fc70e5 | 535 | fp = NULL; |
9a869a14 RGS |
536 | goto say_false; |
537 | } | |
538 | #endif /* USE_STDIO */ | |
41188aa0 TC |
539 | p = (SvOK(*svp) || SvGMAGICAL(*svp)) ? SvPV(*svp, nlen) : NULL; |
540 | ||
a6fc70e5 NC |
541 | if (p && !IS_SAFE_PATHNAME(p, nlen, "open")) { |
542 | fp = NULL; | |
c8028aa6 | 543 | goto say_false; |
a6fc70e5 | 544 | } |
c8028aa6 | 545 | |
41188aa0 TC |
546 | name = p ? savepvn(p, nlen) : savepvs(""); |
547 | ||
faecd977 | 548 | SAVEFREEPV(name); |
6170680b | 549 | } |
faecd977 | 550 | else { |
faecd977 | 551 | name = type; |
b931b1d9 | 552 | len = tend-type; |
faecd977 | 553 | } |
6170680b | 554 | IoTYPE(io) = *type; |
516a5887 | 555 | if ((*type == IoTYPE_RDWR) && /* scary */ |
01a8ea99 | 556 | (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) && |
516a5887 | 557 | ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) { |
c2be40b1 | 558 | TAINT_PROPER("open"); |
6170680b | 559 | mode[1] = *type++; |
c07a80fd | 560 | writing = 1; |
a687059c | 561 | } |
c07a80fd | 562 | |
9f37169a | 563 | if (*type == IoTYPE_PIPE) { |
b931b1d9 NIS |
564 | if (num_svs) { |
565 | if (type[1] != IoTYPE_STD) { | |
c2be40b1 | 566 | unknown_open_mode: |
b931b1d9 NIS |
567 | Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname); |
568 | } | |
569 | type++; | |
6170680b | 570 | } |
294b3b39 AL |
571 | do { |
572 | type++; | |
573 | } while (isSPACE(*type)); | |
faecd977 | 574 | if (!num_svs) { |
6170680b | 575 | name = type; |
b931b1d9 | 576 | len = tend-type; |
faecd977 | 577 | } |
4a7d1889 NIS |
578 | if (*name == '\0') { |
579 | /* command is missing 19990114 */ | |
06eaf0bc | 580 | if (ckWARN(WARN_PIPE)) |
9014280d | 581 | Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open"); |
06eaf0bc | 582 | errno = EPIPE; |
a6fc70e5 | 583 | fp = NULL; |
06eaf0bc GS |
584 | goto say_false; |
585 | } | |
f27977c3 | 586 | if (!(*name == '-' && name[1] == '\0') || num_svs) |
c07a80fd | 587 | TAINT_ENV(); |
588 | TAINT_PROPER("piped open"); | |
b931b1d9 | 589 | if (!num_svs && name[len-1] == '|') { |
faecd977 | 590 | name[--len] = '\0' ; |
599cee73 | 591 | if (ckWARN(WARN_PIPE)) |
9014280d | 592 | Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe"); |
7b8d334a | 593 | } |
a1d180c4 | 594 | mode[0] = 'w'; |
c07a80fd | 595 | writing = 1; |
0c19750d | 596 | if (out_raw) |
5686ee58 | 597 | mode[1] = 'b'; |
0c19750d | 598 | else if (out_crlf) |
5686ee58 | 599 | mode[1] = 't'; |
4a7d1889 NIS |
600 | if (num_svs > 1) { |
601 | fp = PerlProc_popen_list(mode, num_svs, svp); | |
602 | } | |
603 | else { | |
604 | fp = PerlProc_popen(name,mode); | |
605 | } | |
1771866f NIS |
606 | if (num_svs) { |
607 | if (*type) { | |
608 | if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) { | |
a6fc70e5 | 609 | fp = NULL; |
1771866f NIS |
610 | goto say_false; |
611 | } | |
612 | } | |
613 | } | |
c2be40b1 | 614 | } /* IoTYPE_PIPE */ |
9f37169a | 615 | else if (*type == IoTYPE_WRONLY) { |
c07a80fd | 616 | TAINT_PROPER("open"); |
6170680b | 617 | type++; |
9f37169a JH |
618 | if (*type == IoTYPE_WRONLY) { |
619 | /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */ | |
50952442 | 620 | mode[0] = IoTYPE(io) = IoTYPE_APPEND; |
6170680b | 621 | type++; |
a0d0e21e | 622 | } |
ee518936 | 623 | else { |
c07a80fd | 624 | mode[0] = 'w'; |
ee518936 | 625 | } |
c07a80fd | 626 | writing = 1; |
627 | ||
0c19750d | 628 | if (out_raw) |
5686ee58 | 629 | mode[1] = 'b'; |
0c19750d | 630 | else if (out_crlf) |
5686ee58 | 631 | mode[1] = 't'; |
6170680b | 632 | if (*type == '&') { |
c07a80fd | 633 | duplicity: |
ecdeb87c | 634 | dodup = PERLIO_DUP_FD; |
e620cd72 NIS |
635 | type++; |
636 | if (*type == '=') { | |
c07a80fd | 637 | dodup = 0; |
e620cd72 | 638 | type++; |
4a7d1889 | 639 | } |
ee518936 | 640 | if (!num_svs && !*type && supplied_fp) { |
4a7d1889 | 641 | /* "<+&" etc. is used by typemaps */ |
c07a80fd | 642 | fp = supplied_fp; |
ee518936 | 643 | } |
a0d0e21e | 644 | else { |
35da51f7 | 645 | PerlIO *that_fp = NULL; |
b4464d55 | 646 | int wanted_fd; |
22ff3130 | 647 | UV uv; |
e620cd72 | 648 | if (num_svs > 1) { |
fe13d51d | 649 | /* diag_listed_as: More than one argument to '%s' open */ |
e620cd72 NIS |
650 | Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io)); |
651 | } | |
294b3b39 AL |
652 | while (isSPACE(*type)) |
653 | type++; | |
f90b7232 FC |
654 | if (num_svs && ( |
655 | SvIOK(*svp) | |
656 | || (SvPOKp(*svp) && looks_like_number(*svp)) | |
657 | )) { | |
b4464d55 | 658 | wanted_fd = SvUV(*svp); |
24a7a40d | 659 | num_svs = 0; |
ee518936 | 660 | } |
22ff3130 HS |
661 | else if (isDIGIT(*type) |
662 | && grok_atoUV(type, &uv, NULL) | |
663 | && uv <= INT_MAX | |
664 | ) { | |
665 | wanted_fd = (int)uv; | |
e620cd72 | 666 | } |
c07a80fd | 667 | else { |
e1ec3a88 | 668 | const IO* thatio; |
e620cd72 NIS |
669 | if (num_svs) { |
670 | thatio = sv_2io(*svp); | |
671 | } | |
672 | else { | |
35da51f7 | 673 | GV * const thatgv = gv_fetchpvn_flags(type, tend - type, |
90e5519e | 674 | 0, SVt_PVIO); |
e620cd72 NIS |
675 | thatio = GvIO(thatgv); |
676 | } | |
c07a80fd | 677 | if (!thatio) { |
6e21c824 | 678 | #ifdef EINVAL |
93189314 | 679 | SETERRNO(EINVAL,SS_IVCHAN); |
6e21c824 | 680 | #endif |
a6fc70e5 | 681 | fp = NULL; |
c07a80fd | 682 | goto say_false; |
683 | } | |
f4e789af | 684 | if ((that_fp = IoIFP(thatio))) { |
7211d486 JH |
685 | /* Flush stdio buffer before dup. --mjd |
686 | * Unfortunately SEEK_CURing 0 seems to | |
687 | * be optimized away on most platforms; | |
688 | * only Solaris and Linux seem to flush | |
689 | * on that. --jhi */ | |
7211d486 JH |
690 | /* On the other hand, do all platforms |
691 | * take gracefully to flushing a read-only | |
692 | * filehandle? Perhaps we should do | |
693 | * fsetpos(src)+fgetpos(dst)? --nik */ | |
ecdeb87c | 694 | PerlIO_flush(that_fp); |
b4464d55 | 695 | wanted_fd = PerlIO_fileno(that_fp); |
0759c907 JH |
696 | /* When dup()ing STDIN, STDOUT or STDERR |
697 | * explicitly set appropriate access mode */ | |
f4e789af NC |
698 | if (that_fp == PerlIO_stdout() |
699 | || that_fp == PerlIO_stderr()) | |
0759c907 | 700 | IoTYPE(io) = IoTYPE_WRONLY; |
f4e789af | 701 | else if (that_fp == PerlIO_stdin()) |
0759c907 JH |
702 | IoTYPE(io) = IoTYPE_RDONLY; |
703 | /* When dup()ing a socket, say result is | |
704 | * one as well */ | |
705 | else if (IoTYPE(thatio) == IoTYPE_SOCKET) | |
50952442 | 706 | IoTYPE(io) = IoTYPE_SOCKET; |
c07a80fd | 707 | } |
0c9375a5 TC |
708 | else { |
709 | SETERRNO(EBADF, RMS_IFI); | |
710 | fp = NULL; | |
711 | goto say_false; | |
712 | } | |
a0d0e21e | 713 | } |
ee518936 | 714 | if (!num_svs) |
bd61b366 | 715 | type = NULL; |
ecdeb87c NIS |
716 | if (that_fp) { |
717 | fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup); | |
718 | } | |
719 | else { | |
c07a80fd | 720 | if (dodup) |
884fc2d3 | 721 | wanted_fd = PerlLIO_dup_cloexec(wanted_fd); |
ecdeb87c NIS |
722 | else |
723 | was_fdopen = TRUE; | |
b4464d55 NC |
724 | if (!(fp = PerlIO_openn(aTHX_ type,mode,wanted_fd,0,0,NULL,num_svs,svp))) { |
725 | if (dodup && wanted_fd >= 0) | |
726 | PerlLIO_close(wanted_fd); | |
ecdeb87c | 727 | } |
faecd977 | 728 | } |
c07a80fd | 729 | } |
ee518936 | 730 | } /* & */ |
c07a80fd | 731 | else { |
294b3b39 AL |
732 | while (isSPACE(*type)) |
733 | type++; | |
b931b1d9 | 734 | if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) { |
b931b1d9 | 735 | type++; |
760ac839 | 736 | fp = PerlIO_stdout(); |
50952442 | 737 | IoTYPE(io) = IoTYPE_STD; |
7cf31beb | 738 | if (num_svs > 1) { |
fe13d51d | 739 | /* diag_listed_as: More than one argument to '%s' open */ |
7cf31beb NIS |
740 | Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD); |
741 | } | |
c07a80fd | 742 | } |
743 | else { | |
9229bf8d NC |
744 | if (num_svs) { |
745 | fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp); | |
746 | } | |
747 | else { | |
748 | SV *namesv = newSVpvn_flags(type, tend - type, SVs_TEMP); | |
bd61b366 | 749 | type = NULL; |
9229bf8d | 750 | fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,1,&namesv); |
ee518936 | 751 | } |
c07a80fd | 752 | } |
ee518936 | 753 | } /* !& */ |
7e72d509 JH |
754 | if (!fp && type && *type && *type != ':' && !isIDFIRST(*type)) |
755 | goto unknown_open_mode; | |
c2be40b1 | 756 | } /* IoTYPE_WRONLY */ |
9f37169a | 757 | else if (*type == IoTYPE_RDONLY) { |
294b3b39 AL |
758 | do { |
759 | type++; | |
760 | } while (isSPACE(*type)); | |
bf38876a | 761 | mode[0] = 'r'; |
0c19750d | 762 | if (in_raw) |
5686ee58 | 763 | mode[1] = 'b'; |
0c19750d | 764 | else if (in_crlf) |
5686ee58 | 765 | mode[1] = 't'; |
6170680b | 766 | if (*type == '&') { |
bf38876a | 767 | goto duplicity; |
6170680b | 768 | } |
b931b1d9 | 769 | if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) { |
b931b1d9 | 770 | type++; |
760ac839 | 771 | fp = PerlIO_stdin(); |
50952442 | 772 | IoTYPE(io) = IoTYPE_STD; |
7cf31beb | 773 | if (num_svs > 1) { |
fe13d51d | 774 | /* diag_listed_as: More than one argument to '%s' open */ |
7cf31beb NIS |
775 | Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD); |
776 | } | |
a687059c | 777 | } |
ee518936 | 778 | else { |
9229bf8d NC |
779 | if (num_svs) { |
780 | fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp); | |
781 | } | |
782 | else { | |
783 | SV *namesv = newSVpvn_flags(type, tend - type, SVs_TEMP); | |
bd61b366 | 784 | type = NULL; |
9229bf8d | 785 | fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,1,&namesv); |
ee518936 | 786 | } |
ee518936 | 787 | } |
7e72d509 JH |
788 | if (!fp && type && *type && *type != ':' && !isIDFIRST(*type)) |
789 | goto unknown_open_mode; | |
c2be40b1 JH |
790 | } /* IoTYPE_RDONLY */ |
791 | else if ((num_svs && /* '-|...' or '...|' */ | |
792 | type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) || | |
b931b1d9 | 793 | (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) { |
6170680b | 794 | if (num_svs) { |
b931b1d9 | 795 | type += 2; /* skip over '-|' */ |
6170680b IZ |
796 | } |
797 | else { | |
b931b1d9 NIS |
798 | *--tend = '\0'; |
799 | while (tend > type && isSPACE(tend[-1])) | |
800 | *--tend = '\0'; | |
a6e20a40 AL |
801 | for (; isSPACE(*type); type++) |
802 | ; | |
6170680b | 803 | name = type; |
b931b1d9 | 804 | len = tend-type; |
6170680b | 805 | } |
4a7d1889 NIS |
806 | if (*name == '\0') { |
807 | /* command is missing 19990114 */ | |
06eaf0bc | 808 | if (ckWARN(WARN_PIPE)) |
9014280d | 809 | Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open"); |
06eaf0bc | 810 | errno = EPIPE; |
a6fc70e5 | 811 | fp = NULL; |
06eaf0bc GS |
812 | goto say_false; |
813 | } | |
770526c1 | 814 | if (!(*name == '-' && name[1] == '\0') || num_svs) |
79072805 LW |
815 | TAINT_ENV(); |
816 | TAINT_PROPER("piped open"); | |
a1d180c4 | 817 | mode[0] = 'r'; |
0c19750d | 818 | |
0c19750d | 819 | if (in_raw) |
5686ee58 | 820 | mode[1] = 'b'; |
0c19750d | 821 | else if (in_crlf) |
5686ee58 | 822 | mode[1] = 't'; |
0c19750d | 823 | |
4a7d1889 NIS |
824 | if (num_svs > 1) { |
825 | fp = PerlProc_popen_list(mode,num_svs,svp); | |
826 | } | |
e620cd72 | 827 | else { |
4a7d1889 NIS |
828 | fp = PerlProc_popen(name,mode); |
829 | } | |
50952442 | 830 | IoTYPE(io) = IoTYPE_PIPE; |
1771866f | 831 | if (num_svs) { |
294b3b39 AL |
832 | while (isSPACE(*type)) |
833 | type++; | |
1771866f NIS |
834 | if (*type) { |
835 | if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) { | |
a6fc70e5 | 836 | fp = NULL; |
1771866f NIS |
837 | goto say_false; |
838 | } | |
839 | } | |
840 | } | |
a687059c | 841 | } |
c2be40b1 | 842 | else { /* layer(Args) */ |
6170680b | 843 | if (num_svs) |
c2be40b1 | 844 | goto unknown_open_mode; |
6170680b | 845 | name = type; |
50952442 | 846 | IoTYPE(io) = IoTYPE_RDONLY; |
a6e20a40 AL |
847 | for (; isSPACE(*name); name++) |
848 | ; | |
88b61e10 | 849 | mode[0] = 'r'; |
0c19750d | 850 | |
0c19750d | 851 | if (in_raw) |
5686ee58 | 852 | mode[1] = 'b'; |
0c19750d | 853 | else if (in_crlf) |
5686ee58 | 854 | mode[1] = 't'; |
0c19750d | 855 | |
770526c1 | 856 | if (*name == '-' && name[1] == '\0') { |
760ac839 | 857 | fp = PerlIO_stdin(); |
50952442 | 858 | IoTYPE(io) = IoTYPE_STD; |
a687059c | 859 | } |
16fe6d59 | 860 | else { |
9229bf8d NC |
861 | if (num_svs) { |
862 | fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp); | |
863 | } | |
864 | else { | |
865 | SV *namesv = newSVpvn_flags(type, tend - type, SVs_TEMP); | |
bd61b366 | 866 | type = NULL; |
9229bf8d | 867 | fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,1,&namesv); |
ee518936 | 868 | } |
16fe6d59 | 869 | } |
a687059c LW |
870 | } |
871 | } | |
a6fc70e5 NC |
872 | |
873 | say_false: | |
874 | return openn_cleanup(gv, io, fp, mode, oname, saveifp, saveofp, savefd, | |
7e30e49f | 875 | savetype, writing, was_fdopen, type, NULL); |
a6fc70e5 NC |
876 | } |
877 | ||
878 | /* Yes, this is ugly, but it's private, and I don't see a cleaner way to | |
879 | simplify the two-headed public interface of do_openn. */ | |
880 | static bool | |
881 | S_openn_cleanup(pTHX_ GV *gv, IO *io, PerlIO *fp, char *mode, const char *oname, | |
882 | PerlIO *saveifp, PerlIO *saveofp, int savefd, char savetype, | |
7e30e49f | 883 | int writing, bool was_fdopen, const char *type, Stat_t *statbufp) |
a6fc70e5 NC |
884 | { |
885 | int fd; | |
7e30e49f | 886 | Stat_t statbuf; |
a6fc70e5 NC |
887 | |
888 | PERL_ARGS_ASSERT_OPENN_CLEANUP; | |
889 | ||
b1234259 JH |
890 | Zero(&statbuf, 1, Stat_t); |
891 | ||
bee1dbe2 | 892 | if (!fp) { |
ce44635a | 893 | if (IoTYPE(io) == IoTYPE_RDONLY && ckWARN(WARN_NEWLINE) |
7cb3f959 | 894 | && should_warn_nl(oname) |
ce44635a | 895 | |
041457d9 | 896 | ) |
5d37acd6 | 897 | { |
7347ee54 | 898 | GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral); /* PL_warn_nl is constant */ |
9014280d | 899 | Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open"); |
7347ee54 | 900 | GCC_DIAG_RESTORE_STMT; |
5d37acd6 | 901 | } |
6e21c824 | 902 | goto say_false; |
bee1dbe2 | 903 | } |
a00b5bd3 NIS |
904 | |
905 | if (ckWARN(WARN_IO)) { | |
906 | if ((IoTYPE(io) == IoTYPE_RDONLY) && | |
907 | (fp == PerlIO_stdout() || fp == PerlIO_stderr())) { | |
9014280d | 908 | Perl_warner(aTHX_ packWARN(WARN_IO), |
147e3846 | 909 | "Filehandle STD%s reopened as %" HEKf |
d0c0e7dd | 910 | " only for input", |
97828cef | 911 | ((fp == PerlIO_stdout()) ? "OUT" : "ERR"), |
d0c0e7dd | 912 | HEKfARG(GvENAME_HEK(gv))); |
a00b5bd3 | 913 | } |
ee518936 | 914 | else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) { |
9014280d | 915 | Perl_warner(aTHX_ packWARN(WARN_IO), |
147e3846 | 916 | "Filehandle STDIN reopened as %" HEKf " only for output", |
d0c0e7dd FC |
917 | HEKfARG(GvENAME_HEK(gv)) |
918 | ); | |
a00b5bd3 NIS |
919 | } |
920 | } | |
921 | ||
e99cca91 | 922 | fd = PerlIO_fileno(fp); |
375ed12a JH |
923 | /* Do NOT do: "if (fd < 0) goto say_false;" here. If there is no |
924 | * fd assume it isn't a socket - this covers PerlIO::scalar - | |
925 | * otherwise unless we "know" the type probe for socket-ness. | |
e99cca91 NIS |
926 | */ |
927 | if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) { | |
7e30e49f | 928 | if (PerlLIO_fstat(fd,&statbuf) < 0) { |
e99cca91 NIS |
929 | /* If PerlIO claims to have fd we had better be able to fstat() it. */ |
930 | (void) PerlIO_close(fp); | |
6e21c824 | 931 | goto say_false; |
a687059c | 932 | } |
7114a2d2 | 933 | #ifndef PERL_MICRO |
7e30e49f | 934 | if (S_ISSOCK(statbuf.st_mode)) |
50952442 | 935 | IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */ |
99b89507 LW |
936 | #ifdef HAS_SOCKET |
937 | else if ( | |
7e30e49f | 938 | !(statbuf.st_mode & S_IFMT) |
0759c907 JH |
939 | && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */ |
940 | && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */ | |
941 | ) { /* on OS's that return 0 on fstat()ed pipe */ | |
e99cca91 NIS |
942 | char tmpbuf[256]; |
943 | Sock_size_t buflen = sizeof tmpbuf; | |
944 | if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0 | |
945 | || errno != ENOTSOCK) | |
946 | IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */ | |
947 | /* but some return 0 for streams too, sigh */ | |
99b89507 | 948 | } |
e99cca91 | 949 | #endif /* HAS_SOCKET */ |
7114a2d2 | 950 | #endif /* !PERL_MICRO */ |
a687059c | 951 | } |
e99cca91 NIS |
952 | |
953 | /* Eeek - FIXME !!! | |
954 | * If this is a standard handle we discard all the layer stuff | |
955 | * and just dup the fd into whatever was on the handle before ! | |
956 | */ | |
957 | ||
6e21c824 | 958 | if (saveifp) { /* must use old fp? */ |
f5b9d040 | 959 | /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR |
24c23ab4 | 960 | then dup the new fileno down |
f5b9d040 | 961 | */ |
6e21c824 | 962 | if (saveofp) { |
f5b9d040 | 963 | PerlIO_flush(saveofp); /* emulate PerlIO_close() */ |
6e21c824 | 964 | if (saveofp != saveifp) { /* was a socket? */ |
760ac839 | 965 | PerlIO_close(saveofp); |
6e21c824 LW |
966 | } |
967 | } | |
6e60e805 | 968 | if (savefd != fd) { |
e934609f | 969 | /* Still a small can-of-worms here if (say) PerlIO::scalar |
ecdeb87c NIS |
970 | is assigned to (say) STDOUT - for now let dup2() fail |
971 | and provide the error | |
972 | */ | |
375ed12a JH |
973 | if (fd < 0) { |
974 | SETERRNO(EBADF,RMS_IFI); | |
975 | goto say_false; | |
976 | } else if (PerlLIO_dup2(fd, savefd) < 0) { | |
bd4a5668 NIS |
977 | (void)PerlIO_close(fp); |
978 | goto say_false; | |
979 | } | |
d082dcd6 | 980 | #ifdef VMS |
6e60e805 | 981 | if (savefd != PerlIO_fileno(PerlIO_stdin())) { |
d0e2cf63 AMS |
982 | char newname[FILENAME_MAX+1]; |
983 | if (PerlIO_getname(fp, newname)) { | |
984 | if (fd == PerlIO_fileno(PerlIO_stdout())) | |
0db50132 | 985 | vmssetuserlnm("SYS$OUTPUT", newname); |
d0e2cf63 | 986 | if (fd == PerlIO_fileno(PerlIO_stderr())) |
0db50132 | 987 | vmssetuserlnm("SYS$ERROR", newname); |
d0e2cf63 | 988 | } |
d082dcd6 JH |
989 | } |
990 | #endif | |
d0e2cf63 AMS |
991 | |
992 | #if !defined(WIN32) | |
993 | /* PL_fdpid isn't used on Windows, so avoid this useless work. | |
994 | * XXX Probably the same for a lot of other places. */ | |
995 | { | |
996 | Pid_t pid; | |
997 | SV *sv; | |
998 | ||
d0e2cf63 | 999 | sv = *av_fetch(PL_fdpid,fd,TRUE); |
862a34c6 | 1000 | SvUPGRADE(sv, SVt_IV); |
d0e2cf63 | 1001 | pid = SvIVX(sv); |
45977657 | 1002 | SvIV_set(sv, 0); |
d0e2cf63 | 1003 | sv = *av_fetch(PL_fdpid,savefd,TRUE); |
862a34c6 | 1004 | SvUPGRADE(sv, SVt_IV); |
45977657 | 1005 | SvIV_set(sv, pid); |
d0e2cf63 AMS |
1006 | } |
1007 | #endif | |
1008 | ||
e212fc47 AMS |
1009 | if (was_fdopen) { |
1010 | /* need to close fp without closing underlying fd */ | |
1011 | int ofd = PerlIO_fileno(fp); | |
884fc2d3 | 1012 | int dupfd = ofd >= 0 ? PerlLIO_dup_cloexec(ofd) : -1; |
375ed12a JH |
1013 | if (ofd < 0 || dupfd < 0) { |
1014 | if (dupfd >= 0) | |
1015 | PerlLIO_close(dupfd); | |
1016 | goto say_false; | |
1017 | } | |
e212fc47 | 1018 | PerlIO_close(fp); |
884fc2d3 Z |
1019 | PerlLIO_dup2_cloexec(dupfd, ofd); |
1020 | setfd_inhexec_for_sysfd(ofd); | |
e212fc47 | 1021 | PerlLIO_close(dupfd); |
ecdeb87c | 1022 | } |
e212fc47 AMS |
1023 | else |
1024 | PerlIO_close(fp); | |
6e21c824 LW |
1025 | } |
1026 | fp = saveifp; | |
760ac839 | 1027 | PerlIO_clearerr(fp); |
e99cca91 | 1028 | fd = PerlIO_fileno(fp); |
6e21c824 | 1029 | } |
8990e307 | 1030 | IoIFP(io) = fp; |
b931b1d9 | 1031 | |
684bef36 | 1032 | IoFLAGS(io) &= ~IOf_NOLINE; |
bf38876a | 1033 | if (writing) { |
50952442 | 1034 | if (IoTYPE(io) == IoTYPE_SOCKET |
7e30e49f | 1035 | || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(statbuf.st_mode)) ) { |
a33cf58c | 1036 | char *s = mode; |
3b6c1aba JH |
1037 | if (*s == IoTYPE_IMPLICIT || *s == IoTYPE_NUMERIC) |
1038 | s++; | |
a33cf58c | 1039 | *s = 'w'; |
7c491510 | 1040 | if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,s,fd,0,0,NULL,0,NULL))) { |
760ac839 | 1041 | PerlIO_close(fp); |
6e21c824 | 1042 | goto say_false; |
fe14fcc3 | 1043 | } |
1462b684 LW |
1044 | } |
1045 | else | |
8990e307 | 1046 | IoOFP(io) = fp; |
bf38876a | 1047 | } |
7e30e49f DIM |
1048 | if (statbufp) |
1049 | *statbufp = statbuf; | |
1050 | ||
a687059c | 1051 | return TRUE; |
6e21c824 | 1052 | |
7b52d656 | 1053 | say_false: |
8990e307 LW |
1054 | IoIFP(io) = saveifp; |
1055 | IoOFP(io) = saveofp; | |
1056 | IoTYPE(io) = savetype; | |
6e21c824 | 1057 | return FALSE; |
a687059c LW |
1058 | } |
1059 | ||
e0d4aead TC |
1060 | /* Open a temp file in the same directory as an original name. |
1061 | */ | |
1062 | ||
1063 | static bool | |
1064 | S_openindirtemp(pTHX_ GV *gv, SV *orig_name, SV *temp_out_name) { | |
1065 | int fd; | |
1066 | PerlIO *fp; | |
1067 | const char *p = SvPV_nolen(orig_name); | |
1068 | const char *sep; | |
1069 | ||
1070 | /* look for the last directory separator */ | |
1071 | sep = strrchr(p, '/'); | |
1072 | ||
1073 | #ifdef DOSISH | |
1074 | { | |
1075 | const char *sep2; | |
1076 | if ((sep2 = strrchr(sep ? sep : p, '\\'))) | |
1077 | sep = sep2; | |
1078 | } | |
1079 | #endif | |
1080 | #ifdef VMS | |
1081 | if (!sep) { | |
1082 | const char *openp = strchr(p, '['); | |
1083 | if (openp) | |
1084 | sep = strchr(openp, ']'); | |
1085 | else { | |
1086 | sep = strchr(p, ':'); | |
1087 | } | |
1088 | } | |
1089 | #endif | |
1090 | if (sep) { | |
1091 | sv_setpvn(temp_out_name, p, sep - p + 1); | |
1092 | sv_catpvs(temp_out_name, "XXXXXXXX"); | |
1093 | } | |
1094 | else | |
1095 | sv_setpvs(temp_out_name, "XXXXXXXX"); | |
1096 | ||
026633c6 JH |
1097 | { |
1098 | int old_umask = umask(0177); | |
884fc2d3 | 1099 | fd = Perl_my_mkstemp_cloexec(SvPVX(temp_out_name)); |
026633c6 JH |
1100 | umask(old_umask); |
1101 | } | |
e0d4aead TC |
1102 | |
1103 | if (fd < 0) | |
1104 | return FALSE; | |
1105 | ||
1106 | fp = PerlIO_fdopen(fd, "w+"); | |
1107 | if (!fp) | |
1108 | return FALSE; | |
1109 | ||
1110 | return do_openn(gv, "+>&", 3, 0, 0, 0, fp, NULL, 0); | |
1111 | } | |
1112 | ||
733612e0 | 1113 | #if defined(HAS_UNLINKAT) && defined(HAS_RENAMEAT) && defined(HAS_FCHMODAT) && \ |
c3fcee07 JK |
1114 | (defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)) && !defined(NO_USE_ATFUNCTIONS) && \ |
1115 | defined(HAS_LINKAT) | |
733612e0 TC |
1116 | # define ARGV_USE_ATFUNCTIONS |
1117 | #endif | |
1118 | ||
1b4d0d79 TC |
1119 | /* Win32 doesn't necessarily return useful information |
1120 | * in st_dev, st_ino. | |
1121 | */ | |
184f90dc TC |
1122 | #ifndef DOSISH |
1123 | # define ARGV_USE_STAT_INO | |
1b4d0d79 TC |
1124 | #endif |
1125 | ||
e0d4aead TC |
1126 | #define ARGVMG_BACKUP_NAME 0 |
1127 | #define ARGVMG_TEMP_NAME 1 | |
1128 | #define ARGVMG_ORIG_NAME 2 | |
1129 | #define ARGVMG_ORIG_MODE 3 | |
05df5c88 | 1130 | #define ARGVMG_ORIG_PID 4 |
bb082417 | 1131 | |
bb082417 TC |
1132 | /* we store the entire stat_t since the ino_t and dev_t values might |
1133 | not fit in an IV. I could have created a new structure and | |
1134 | transferred them across, but this seemed too much effort for very | |
1135 | little win. | |
184f90dc TC |
1136 | |
1137 | We store it even when the *at() functions are available, since | |
1138 | while the C runtime might have definitions for these functions, the | |
1139 | operating system or a specific filesystem might not implement them. | |
1140 | eg. NetBSD 6 implements linkat() but only where the fds are AT_FDCWD. | |
bb082417 | 1141 | */ |
184f90dc TC |
1142 | #ifdef ARGV_USE_STAT_INO |
1143 | # define ARGVMG_ORIG_CWD_STAT 5 | |
1144 | #endif | |
1145 | ||
1146 | #ifdef ARGV_USE_ATFUNCTIONS | |
1147 | # define ARGVMG_ORIG_DIRP 6 | |
1148 | #endif | |
1149 | ||
1150 | #ifdef ENOTSUP | |
1151 | #define NotSupported(e) ((e) == ENOSYS || (e) == ENOTSUP) | |
1152 | #else | |
1153 | #define NotSupported(e) ((e) == ENOSYS) | |
bb082417 | 1154 | #endif |
e0d4aead TC |
1155 | |
1156 | static int | |
d0405818 | 1157 | S_argvout_free(pTHX_ SV *io, MAGIC *mg) { |
d0405818 | 1158 | PERL_UNUSED_ARG(io); |
e0d4aead TC |
1159 | |
1160 | /* note this can be entered once the file has been | |
1161 | successfully deleted too */ | |
d0405818 TC |
1162 | assert(IoTYPE(io) != IoTYPE_PIPE); |
1163 | ||
8ab93df0 TC |
1164 | /* mg_obj can be NULL if a thread is created with the handle open, in which |
1165 | case we leave any clean up to the parent thread */ | |
1166 | if (mg->mg_obj && IoIFP(io)) { | |
1167 | SV **pid_psv; | |
733612e0 TC |
1168 | #ifdef ARGV_USE_ATFUNCTIONS |
1169 | SV **dir_psv; | |
1170 | DIR *dir; | |
1171 | #endif | |
d0405818 | 1172 | PerlIO *iop = IoIFP(io); |
05df5c88 TC |
1173 | |
1174 | assert(SvTYPE(mg->mg_obj) == SVt_PVAV); | |
1175 | ||
1176 | pid_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_PID, FALSE); | |
1177 | ||
1178 | assert(pid_psv && *pid_psv); | |
1179 | ||
1180 | if (SvIV(*pid_psv) == (IV)PerlProc_getpid()) { | |
1181 | /* if we get here the file hasn't been closed explicitly by the | |
1182 | user and hadn't been closed implicitly by nextargv(), so | |
1183 | abandon the edit */ | |
184f90dc TC |
1184 | SV **temp_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_TEMP_NAME, FALSE); |
1185 | const char *temp_pv = SvPVX(*temp_psv); | |
1186 | ||
1187 | assert(temp_psv && *temp_psv && SvPOK(*temp_psv)); | |
05df5c88 TC |
1188 | (void)PerlIO_close(iop); |
1189 | IoIFP(io) = IoOFP(io) = NULL; | |
733612e0 | 1190 | #ifdef ARGV_USE_ATFUNCTIONS |
05df5c88 TC |
1191 | dir_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_DIRP, FALSE); |
1192 | assert(dir_psv && *dir_psv && SvIOK(*dir_psv)); | |
1193 | dir = INT2PTR(DIR *, SvIV(*dir_psv)); | |
1194 | if (dir) { | |
184f90dc TC |
1195 | if (unlinkat(my_dirfd(dir), temp_pv, 0) < 0 && |
1196 | NotSupported(errno)) | |
1197 | (void)UNLINK(temp_pv); | |
05df5c88 TC |
1198 | closedir(dir); |
1199 | } | |
733612e0 | 1200 | #else |
184f90dc | 1201 | (void)UNLINK(temp_pv); |
733612e0 | 1202 | #endif |
05df5c88 | 1203 | } |
e0d4aead TC |
1204 | } |
1205 | ||
1206 | return 0; | |
1207 | } | |
1208 | ||
8ab93df0 TC |
1209 | static int |
1210 | S_argvout_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) { | |
1211 | PERL_UNUSED_ARG(param); | |
1212 | ||
1213 | /* ideally we could just remove the magic from the SV but we don't get the SV here */ | |
1214 | SvREFCNT_dec(mg->mg_obj); | |
1215 | mg->mg_obj = NULL; | |
1216 | ||
1217 | return 0; | |
1218 | } | |
1219 | ||
e0d4aead TC |
1220 | /* Magic of this type has an AV containing the following: |
1221 | 0: name of the backup file (if any) | |
1222 | 1: name of the temp output file | |
1223 | 2: name of the original file | |
1224 | 3: file mode of the original file | |
05df5c88 TC |
1225 | 4: pid of the process we opened at, to prevent doing the renaming |
1226 | etc in both the child and the parent after a fork | |
733612e0 | 1227 | |
184f90dc TC |
1228 | If we have useful inode/device ids in stat_t we also keep: |
1229 | 5: a stat of the original current working directory | |
1230 | ||
733612e0 | 1231 | If we have unlinkat(), renameat(), fchmodat(), dirfd() we also keep: |
184f90dc | 1232 | 6: the DIR * for the current directory when we open the file, stored as an IV |
e0d4aead TC |
1233 | */ |
1234 | ||
1235 | static const MGVTBL argvout_vtbl = | |
1236 | { | |
1237 | NULL, /* svt_get */ | |
1238 | NULL, /* svt_set */ | |
1239 | NULL, /* svt_len */ | |
1240 | NULL, /* svt_clear */ | |
1241 | S_argvout_free, /* svt_free */ | |
1242 | NULL, /* svt_copy */ | |
8ab93df0 TC |
1243 | S_argvout_dup, /* svt_dup */ |
1244 | NULL /* svt_local */ | |
e0d4aead TC |
1245 | }; |
1246 | ||
760ac839 | 1247 | PerlIO * |
157fb5a1 | 1248 | Perl_nextargv(pTHX_ GV *gv, bool nomagicopen) |
a687059c | 1249 | { |
2d03de9c | 1250 | IO * const io = GvIOp(gv); |
502aca56 | 1251 | SV *const old_out_name = PL_inplace ? newSVsv(GvSV(gv)) : NULL; |
fe14fcc3 | 1252 | |
7918f24d NC |
1253 | PERL_ARGS_ASSERT_NEXTARGV; |
1254 | ||
502aca56 TC |
1255 | if (old_out_name) |
1256 | SAVEFREESV(old_out_name); | |
1257 | ||
3280af22 | 1258 | if (!PL_argvoutgv) |
fafc274c | 1259 | PL_argvoutgv = gv_fetchpvs("ARGVOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
5513c2cf | 1260 | if (io && (IoFLAGS(io) & (IOf_ARGV|IOf_START)) == (IOf_ARGV|IOf_START)) { |
18708f5a | 1261 | IoFLAGS(io) &= ~IOf_START; |
7a1c5554 | 1262 | if (PL_inplace) { |
294b3b39 | 1263 | assert(PL_defoutgv); |
29a861e7 NC |
1264 | Perl_av_create_and_push(aTHX_ &PL_argvout_stack, |
1265 | SvREFCNT_inc_simple_NN(PL_defoutgv)); | |
7a1c5554 | 1266 | } |
18708f5a | 1267 | } |
e0d4aead TC |
1268 | |
1269 | { | |
1270 | IO * const io = GvIOp(PL_argvoutgv); | |
1271 | if (io && IoIFP(io) && old_out_name) { | |
1272 | do_close(PL_argvoutgv, FALSE); | |
1273 | } | |
fe14fcc3 | 1274 | } |
e0d4aead | 1275 | |
c797f2d8 | 1276 | PL_lastfd = -1; |
3280af22 | 1277 | PL_filemode = 0; |
5c501b37 | 1278 | if (!GvAV(gv)) |
4608196e | 1279 | return NULL; |
b9f2b683 | 1280 | while (av_tindex(GvAV(gv)) >= 0) { |
85aff577 | 1281 | STRLEN oldlen; |
1fa0529f | 1282 | SV *const sv = av_shift(GvAV(gv)); |
8990e307 | 1283 | SAVEFREESV(sv); |
4bac9ae4 | 1284 | SvTAINTED_off(GvSVn(gv)); /* previous tainting irrelevant */ |
e203899d | 1285 | sv_setsv(GvSVn(gv),sv); |
79072805 | 1286 | SvSETMAGIC(GvSV(gv)); |
3280af22 | 1287 | PL_oldname = SvPVx(GvSV(gv), oldlen); |
d8015975 | 1288 | if (LIKELY(!PL_inplace)) { |
157fb5a1 RGS |
1289 | if (nomagicopen |
1290 | ? do_open6(gv, "<", 1, NULL, &GvSV(gv), 1) | |
1291 | : do_open6(gv, PL_oldname, oldlen, NULL, NULL, 0) | |
1292 | ) { | |
d8015975 NC |
1293 | return IoIFP(GvIOp(gv)); |
1294 | } | |
1295 | } | |
1296 | else { | |
7e30e49f | 1297 | Stat_t statbuf; |
d8015975 NC |
1298 | /* This very long block ends with return IoIFP(GvIOp(gv)); |
1299 | Both this block and the block above fall through on open | |
1300 | failure to the warning code, and then the while loop above tries | |
1301 | the next entry. */ | |
7e30e49f | 1302 | if (do_open_raw(gv, PL_oldname, oldlen, O_RDONLY, 0, &statbuf)) { |
1fa0529f NC |
1303 | #ifndef FLEXFILENAMES |
1304 | int filedev; | |
1305 | int fileino; | |
1306 | #endif | |
733612e0 TC |
1307 | #ifdef ARGV_USE_ATFUNCTIONS |
1308 | DIR *curdir; | |
1309 | #endif | |
1fa0529f NC |
1310 | Uid_t fileuid; |
1311 | Gid_t filegid; | |
e0d4aead TC |
1312 | AV *magic_av = NULL; |
1313 | SV *temp_name_sv = NULL; | |
8ab93df0 | 1314 | MAGIC *mg; |
1fa0529f | 1315 | |
79072805 | 1316 | TAINT_PROPER("inplace open"); |
3280af22 | 1317 | if (oldlen == 1 && *PL_oldname == '-') { |
fafc274c NC |
1318 | setdefout(gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, |
1319 | SVt_PVIO)); | |
a0d0e21e | 1320 | return IoIFP(GvIOp(gv)); |
c623bd54 | 1321 | } |
99b89507 | 1322 | #ifndef FLEXFILENAMES |
7e30e49f DIM |
1323 | filedev = statbuf.st_dev; |
1324 | fileino = statbuf.st_ino; | |
99b89507 | 1325 | #endif |
7e30e49f DIM |
1326 | PL_filemode = statbuf.st_mode; |
1327 | fileuid = statbuf.st_uid; | |
1328 | filegid = statbuf.st_gid; | |
3280af22 | 1329 | if (!S_ISREG(PL_filemode)) { |
9b387841 NC |
1330 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE), |
1331 | "Can't do inplace edit: %s is not a regular file", | |
1332 | PL_oldname ); | |
79072805 | 1333 | do_close(gv,FALSE); |
c623bd54 LW |
1334 | continue; |
1335 | } | |
e0d4aead | 1336 | magic_av = newAV(); |
c9930541 | 1337 | if (*PL_inplace && strNE(PL_inplace, "*")) { |
2d03de9c | 1338 | const char *star = strchr(PL_inplace, '*'); |
2d259d92 | 1339 | if (star) { |
2d03de9c | 1340 | const char *begin = PL_inplace; |
8062ff11 | 1341 | SvPVCLEAR(sv); |
2d259d92 CK |
1342 | do { |
1343 | sv_catpvn(sv, begin, star - begin); | |
3280af22 | 1344 | sv_catpvn(sv, PL_oldname, oldlen); |
2d259d92 CK |
1345 | begin = ++star; |
1346 | } while ((star = strchr(begin, '*'))); | |
3d66d7bb GS |
1347 | if (*begin) |
1348 | sv_catpv(sv,begin); | |
2d259d92 CK |
1349 | } |
1350 | else { | |
3280af22 | 1351 | sv_catpv(sv,PL_inplace); |
2d259d92 | 1352 | } |
c623bd54 | 1353 | #ifndef FLEXFILENAMES |
7e30e49f DIM |
1354 | if ((PerlLIO_stat(SvPVX_const(sv),&statbuf) >= 0 |
1355 | && statbuf.st_dev == filedev | |
1356 | && statbuf.st_ino == fileino) | |
39e571d4 | 1357 | #ifdef DJGPP |
5f74f29c | 1358 | || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0) |
39e571d4 | 1359 | #endif |
f248d071 GS |
1360 | ) |
1361 | { | |
9b387841 | 1362 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE), |
147e3846 KW |
1363 | "Can't do inplace edit: %" |
1364 | SVf " would not be unique", | |
9b387841 | 1365 | SVfARG(sv)); |
e0d4aead | 1366 | goto cleanup_argv; |
c623bd54 | 1367 | } |
ff8e2863 | 1368 | #endif |
e0d4aead | 1369 | av_store(magic_av, ARGVMG_BACKUP_NAME, newSVsv(sv)); |
a687059c LW |
1370 | } |
1371 | ||
30fc4309 | 1372 | sv_setpvn(sv,PL_oldname,oldlen); |
748a9306 | 1373 | SETERRNO(0,0); /* in case sprintf set errno */ |
e0d4aead TC |
1374 | temp_name_sv = newSV(0); |
1375 | if (!S_openindirtemp(aTHX_ PL_argvoutgv, GvSV(gv), temp_name_sv)) { | |
1376 | SvREFCNT_dec(temp_name_sv); | |
1377 | /* diag_listed_as: Can't do inplace edit on %s: %s */ | |
1378 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: Cannot make temp name: %s", | |
9b387841 | 1379 | PL_oldname, Strerror(errno) ); |
e0d4aead TC |
1380 | #ifndef FLEXFILENAMES |
1381 | cleanup_argv: | |
1382 | #endif | |
1383 | do_close(gv,FALSE); | |
1384 | SvREFCNT_dec(magic_av); | |
1385 | continue; | |
fe14fcc3 | 1386 | } |
e0d4aead TC |
1387 | av_store(magic_av, ARGVMG_TEMP_NAME, temp_name_sv); |
1388 | av_store(magic_av, ARGVMG_ORIG_NAME, newSVsv(sv)); | |
1389 | av_store(magic_av, ARGVMG_ORIG_MODE, newSVuv(PL_filemode)); | |
05df5c88 | 1390 | av_store(magic_av, ARGVMG_ORIG_PID, newSViv((IV)PerlProc_getpid())); |
1b4d0d79 | 1391 | #if defined(ARGV_USE_ATFUNCTIONS) |
733612e0 TC |
1392 | curdir = opendir("."); |
1393 | av_store(magic_av, ARGVMG_ORIG_DIRP, newSViv(PTR2IV(curdir))); | |
1b4d0d79 | 1394 | #elif defined(ARGV_USE_STAT_INO) |
bb082417 TC |
1395 | if (PerlLIO_stat(".", &statbuf) >= 0) { |
1396 | av_store(magic_av, ARGVMG_ORIG_CWD_STAT, | |
1397 | newSVpvn((char *)&statbuf, sizeof(statbuf))); | |
1398 | } | |
733612e0 | 1399 | #endif |
3280af22 | 1400 | setdefout(PL_argvoutgv); |
dddabd86 | 1401 | sv_setsv(GvSVn(PL_argvoutgv), temp_name_sv); |
8ab93df0 TC |
1402 | mg = sv_magicext((SV*)GvIOp(PL_argvoutgv), (SV*)magic_av, PERL_MAGIC_uvar, &argvout_vtbl, NULL, 0); |
1403 | mg->mg_flags |= MGf_DUP; | |
e0d4aead | 1404 | SvREFCNT_dec(magic_av); |
3280af22 | 1405 | PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv))); |
375ed12a | 1406 | if (PL_lastfd >= 0) { |
45a23732 | 1407 | (void)PerlLIO_fstat(PL_lastfd,&statbuf); |
fe14fcc3 | 1408 | #ifdef HAS_FCHMOD |
375ed12a | 1409 | (void)fchmod(PL_lastfd,PL_filemode); |
a687059c | 1410 | #else |
375ed12a | 1411 | (void)PerlLIO_chmod(PL_oldname,PL_filemode); |
a687059c | 1412 | #endif |
45a23732 | 1413 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
b469f1e0 | 1414 | /* XXX silently ignore failures */ |
fe14fcc3 | 1415 | #ifdef HAS_FCHOWN |
b469f1e0 | 1416 | PERL_UNUSED_RESULT(fchown(PL_lastfd,fileuid,filegid)); |
4009c3ff | 1417 | #elif defined(HAS_CHOWN) |
b469f1e0 | 1418 | PERL_UNUSED_RESULT(PerlLIO_chown(PL_oldname,fileuid,filegid)); |
a687059c | 1419 | #endif |
375ed12a | 1420 | } |
fe14fcc3 | 1421 | } |
d8015975 | 1422 | return IoIFP(GvIOp(gv)); |
a687059c | 1423 | } |
d8015975 NC |
1424 | } /* successful do_open_raw(), PL_inplace non-NULL */ |
1425 | ||
1426 | if (ckWARN_d(WARN_INPLACE)) { | |
1427 | const int eno = errno; | |
7e30e49f | 1428 | Stat_t statbuf; |
45a23732 DD |
1429 | if (PerlLIO_stat(PL_oldname, &statbuf) >= 0 |
1430 | && !S_ISREG(statbuf.st_mode)) { | |
d8015975 NC |
1431 | Perl_warner(aTHX_ packWARN(WARN_INPLACE), |
1432 | "Can't do inplace edit: %s is not a regular file", | |
1433 | PL_oldname); | |
1434 | } | |
1435 | else { | |
1436 | Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s", | |
1437 | PL_oldname, Strerror(eno)); | |
1438 | } | |
4d61ec05 | 1439 | } |
a687059c | 1440 | } |
18708f5a GS |
1441 | if (io && (IoFLAGS(io) & IOf_ARGV)) |
1442 | IoFLAGS(io) |= IOf_START; | |
3280af22 | 1443 | if (PL_inplace) { |
7a1c5554 GS |
1444 | if (io && (IoFLAGS(io) & IOf_ARGV) |
1445 | && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0) | |
1446 | { | |
159b6efe | 1447 | GV * const oldout = MUTABLE_GV(av_pop(PL_argvout_stack)); |
18708f5a | 1448 | setdefout(oldout); |
8e217d4a | 1449 | SvREFCNT_dec_NN(oldout); |
4608196e | 1450 | return NULL; |
18708f5a | 1451 | } |
fafc274c | 1452 | setdefout(gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO)); |
a687059c | 1453 | } |
4608196e | 1454 | return NULL; |
a687059c LW |
1455 | } |
1456 | ||
84dbe61c TC |
1457 | #ifdef ARGV_USE_ATFUNCTIONS |
1458 | # if defined(__FreeBSD__) | |
1459 | ||
1460 | /* FreeBSD 11 renameat() mis-behaves strangely with absolute paths in cases where the | |
1461 | * equivalent rename() succeeds | |
1462 | */ | |
1463 | static int | |
1464 | S_my_renameat(int olddfd, const char *oldpath, int newdfd, const char *newpath) { | |
1465 | /* this is intended only for use in Perl_do_close() */ | |
1466 | assert(olddfd == newdfd); | |
1467 | assert(PERL_FILE_IS_ABSOLUTE(oldpath) == PERL_FILE_IS_ABSOLUTE(newpath)); | |
1468 | if (PERL_FILE_IS_ABSOLUTE(oldpath)) { | |
1469 | return PerlLIO_rename(oldpath, newpath); | |
1470 | } | |
1471 | else { | |
1472 | return renameat(olddfd, oldpath, newdfd, newpath); | |
1473 | } | |
1474 | } | |
1475 | ||
1476 | # else | |
1477 | # define S_my_renameat(dh1, pv1, dh2, pv2) renameat((dh1), (pv1), (dh2), (pv2)) | |
1478 | # endif /* if defined(__FreeBSD__) */ | |
1479 | #endif | |
1480 | ||
184f90dc | 1481 | static bool |
848643a9 | 1482 | S_dir_unchanged(pTHX_ const char *orig_pv, MAGIC *mg) { |
184f90dc TC |
1483 | Stat_t statbuf; |
1484 | ||
1485 | #ifdef ARGV_USE_STAT_INO | |
1486 | SV **stat_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_CWD_STAT, FALSE); | |
1487 | Stat_t *orig_cwd_stat = stat_psv && *stat_psv ? (Stat_t *)SvPVX(*stat_psv) : NULL; | |
1488 | ||
1489 | /* if the path is absolute the possible moving of cwd (which the file | |
1490 | might be in) isn't our problem. | |
1491 | This code tries to be reasonably balanced about detecting a changed | |
1492 | CWD, if we have the information needed to check that curdir has changed, we | |
1493 | check it | |
1494 | */ | |
1495 | if (!PERL_FILE_IS_ABSOLUTE(orig_pv) | |
1496 | && orig_cwd_stat | |
1497 | && PerlLIO_stat(".", &statbuf) >= 0 | |
1498 | && ( statbuf.st_dev != orig_cwd_stat->st_dev | |
1499 | || statbuf.st_ino != orig_cwd_stat->st_ino)) { | |
1500 | Perl_croak(aTHX_ "Cannot complete in-place edit of %s: %s", | |
1501 | orig_pv, "Current directory has changed"); | |
1502 | } | |
1503 | #else | |
1504 | SV **temp_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_TEMP_NAME, FALSE); | |
1505 | ||
1506 | /* Some platforms don't have useful st_ino etc, so just | |
1507 | check we can see the work file. | |
1508 | */ | |
1509 | if (!PERL_FILE_IS_ABSOLUTE(orig_pv) | |
1510 | && PerlLIO_stat(SvPVX(*temp_psv), &statbuf) < 0) { | |
3c67ad9b | 1511 | Perl_croak(aTHX_ "Cannot complete in-place edit of %s: %s", |
a06de4dc | 1512 | orig_pv, |
184f90dc TC |
1513 | "Work file is missing - did you change directory?"); |
1514 | } | |
1515 | #endif | |
1516 | ||
1517 | return TRUE; | |
1518 | } | |
1519 | ||
848643a9 TC |
1520 | #define dir_unchanged(orig_psv, mg) \ |
1521 | S_dir_unchanged(aTHX_ (orig_psv), (mg)) | |
184f90dc | 1522 | |
517844ec | 1523 | /* explicit renamed to avoid C++ conflict -- kja */ |
a687059c | 1524 | bool |
864dbfa3 | 1525 | Perl_do_close(pTHX_ GV *gv, bool not_implicit) |
a687059c | 1526 | { |
1193dd27 IZ |
1527 | bool retval; |
1528 | IO *io; | |
e0d4aead | 1529 | MAGIC *mg; |
a687059c | 1530 | |
79072805 | 1531 | if (!gv) |
3280af22 | 1532 | gv = PL_argvgv; |
6e592b3a | 1533 | if (!gv || !isGV_with_GP(gv)) { |
1d2dff63 | 1534 | if (not_implicit) |
93189314 | 1535 | SETERRNO(EBADF,SS_IVCHAN); |
c2ab57d4 | 1536 | return FALSE; |
99b89507 | 1537 | } |
79072805 LW |
1538 | io = GvIO(gv); |
1539 | if (!io) { /* never opened */ | |
1d2dff63 | 1540 | if (not_implicit) { |
51087808 | 1541 | report_evil_fh(gv); |
93189314 | 1542 | SETERRNO(EBADF,SS_IVCHAN); |
1d2dff63 | 1543 | } |
a687059c LW |
1544 | return FALSE; |
1545 | } | |
e0d4aead TC |
1546 | if ((mg = mg_findext((SV*)io, PERL_MAGIC_uvar, &argvout_vtbl)) |
1547 | && mg->mg_obj) { | |
1548 | /* handle to an in-place edit work file */ | |
1549 | SV **back_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_BACKUP_NAME, FALSE); | |
1550 | SV **temp_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_TEMP_NAME, FALSE); | |
1551 | /* PL_oldname may have been modified by a nested ARGV use at this point */ | |
1552 | SV **orig_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_NAME, FALSE); | |
1553 | SV **mode_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_MODE, FALSE); | |
05df5c88 | 1554 | SV **pid_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_PID, FALSE); |
1b4d0d79 | 1555 | #if defined(ARGV_USE_ATFUNCTIONS) |
05df5c88 | 1556 | SV **dir_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_DIRP, FALSE); |
733612e0 TC |
1557 | DIR *dir; |
1558 | int dfd; | |
1b4d0d79 | 1559 | #endif |
e0d4aead TC |
1560 | UV mode; |
1561 | int fd; | |
1562 | ||
1563 | const char *orig_pv; | |
1564 | ||
1565 | assert(temp_psv && *temp_psv); | |
1566 | assert(orig_psv && *orig_psv); | |
1567 | assert(mode_psv && *mode_psv); | |
05df5c88 | 1568 | assert(pid_psv && *pid_psv); |
733612e0 TC |
1569 | #ifdef ARGV_USE_ATFUNCTIONS |
1570 | assert(dir_psv && *dir_psv); | |
1571 | dir = INT2PTR(DIR *, SvIVX(*dir_psv)); | |
1572 | dfd = my_dirfd(dir); | |
1573 | #endif | |
e0d4aead TC |
1574 | |
1575 | orig_pv = SvPVX(*orig_psv); | |
e0d4aead TC |
1576 | mode = SvUV(*mode_psv); |
1577 | ||
1578 | if ((mode & (S_ISUID|S_ISGID)) != 0 | |
1579 | && (fd = PerlIO_fileno(IoIFP(io))) >= 0) { | |
1580 | (void)PerlIO_flush(IoIFP(io)); | |
1581 | #ifdef HAS_FCHMOD | |
1582 | (void)fchmod(fd, mode); | |
1583 | #else | |
1584 | (void)PerlLIO_chmod(orig_pv, mode); | |
1585 | #endif | |
1586 | } | |
1587 | ||
1588 | retval = io_close(io, NULL, not_implicit, FALSE); | |
1589 | ||
05df5c88 TC |
1590 | if (SvIV(*pid_psv) != (IV)PerlProc_getpid()) { |
1591 | /* this is a child process, don't duplicate our rename() etc | |
1592 | processing below */ | |
1593 | goto freext; | |
1594 | } | |
1595 | ||
e0d4aead TC |
1596 | if (retval) { |
1597 | #if defined(DOSISH) || defined(__CYGWIN__) | |
1598 | if (PL_argvgv && GvIOp(PL_argvgv) | |
1599 | && IoIFP(GvIOp(PL_argvgv)) | |
1600 | && (IoFLAGS(GvIOp(PL_argvgv)) & (IOf_ARGV|IOf_START)) == IOf_ARGV) { | |
1601 | do_close(PL_argvgv, FALSE); | |
1602 | } | |
1603 | #endif | |
184f90dc | 1604 | #ifndef ARGV_USE_ATFUNCTIONS |
848643a9 | 1605 | if (!dir_unchanged(orig_pv, mg)) |
184f90dc TC |
1606 | goto abort_inplace; |
1607 | #endif | |
e0d4aead TC |
1608 | if (back_psv && *back_psv) { |
1609 | #if defined(HAS_LINK) && !defined(DOSISH) && !defined(__CYGWIN__) && defined(HAS_RENAME) | |
733612e0 TC |
1610 | if ( |
1611 | # ifdef ARGV_USE_ATFUNCTIONS | |
184f90dc TC |
1612 | linkat(dfd, orig_pv, dfd, SvPVX(*back_psv), 0) < 0 && |
1613 | !(UNLIKELY(NotSupported(errno)) && | |
848643a9 | 1614 | dir_unchanged(orig_pv, mg) && |
184f90dc | 1615 | link(orig_pv, SvPVX(*back_psv)) == 0) |
733612e0 TC |
1616 | # else |
1617 | link(orig_pv, SvPVX(*back_psv)) < 0 | |
1618 | # endif | |
1619 | ) | |
e0d4aead TC |
1620 | #endif |
1621 | { | |
1622 | #ifdef HAS_RENAME | |
733612e0 TC |
1623 | if ( |
1624 | # ifdef ARGV_USE_ATFUNCTIONS | |
184f90dc TC |
1625 | S_my_renameat(dfd, orig_pv, dfd, SvPVX(*back_psv)) < 0 && |
1626 | !(UNLIKELY(NotSupported(errno)) && | |
848643a9 | 1627 | dir_unchanged(orig_pv, mg) && |
184f90dc | 1628 | PerlLIO_rename(orig_pv, SvPVX(*back_psv)) == 0) |
733612e0 TC |
1629 | # else |
1630 | PerlLIO_rename(orig_pv, SvPVX(*back_psv)) < 0 | |
1631 | # endif | |
1632 | ) { | |
e0d4aead | 1633 | if (!not_implicit) { |
83419aa9 | 1634 | # ifdef ARGV_USE_ATFUNCTIONS |
184f90dc TC |
1635 | if (unlinkat(dfd, SvPVX_const(*temp_psv), 0) < 0 && |
1636 | UNLIKELY(NotSupported(errno)) && | |
848643a9 | 1637 | dir_unchanged(orig_pv, mg)) |
184f90dc | 1638 | (void)UNLINK(SvPVX_const(*temp_psv)); |
83419aa9 TC |
1639 | # else |
1640 | UNLINK(SvPVX(*temp_psv)); | |
1641 | # endif | |
e0d4aead TC |
1642 | Perl_croak(aTHX_ "Can't rename %s to %s: %s, skipping file", |
1643 | SvPVX(*orig_psv), SvPVX(*back_psv), Strerror(errno)); | |
1644 | } | |
1645 | /* should we warn here? */ | |
1646 | goto abort_inplace; | |
1647 | } | |
1648 | #else | |
1649 | (void)UNLINK(SvPVX(*back_psv)); | |
1650 | if (link(orig_pv, SvPVX(*back_psv))) { | |
1651 | if (!not_implicit) { | |
1652 | Perl_croak(aTHX_ "Can't rename %s to %s: %s, skipping file", | |
1653 | SvPVX(*orig_psv), SvPVX(*back_psv), Strerror(errno)); | |
1654 | } | |
1655 | goto abort_inplace; | |
1656 | } | |
1657 | /* we need to use link() to get the temp into place too, and linK() | |
1658 | fails if the new link name exists */ | |
1659 | (void)UNLINK(orig_pv); | |
1660 | #endif | |
1661 | } | |
1662 | } | |
1663 | #if defined(DOSISH) || defined(__CYGWIN__) || !defined(HAS_RENAME) | |
1664 | else { | |
1665 | UNLINK(orig_pv); | |
1666 | } | |
1667 | #endif | |
1668 | if ( | |
4009c3ff AC |
1669 | #if !defined(HAS_RENAME) |
1670 | link(SvPVX(*temp_psv), orig_pv) < 0 | |
1671 | #elif defined(ARGV_USE_ATFUNCTIONS) | |
184f90dc TC |
1672 | S_my_renameat(dfd, SvPVX(*temp_psv), dfd, orig_pv) < 0 && |
1673 | !(UNLIKELY(NotSupported(errno)) && | |
848643a9 | 1674 | dir_unchanged(orig_pv, mg) && |
184f90dc | 1675 | PerlLIO_rename(SvPVX(*temp_psv), orig_pv) == 0) |
e0d4aead | 1676 | #else |
4009c3ff | 1677 | PerlLIO_rename(SvPVX(*temp_psv), orig_pv) < 0 |
e0d4aead TC |
1678 | #endif |
1679 | ) { | |
1680 | if (!not_implicit) { | |
dddabd86 | 1681 | #ifdef ARGV_USE_ATFUNCTIONS |
184f90dc TC |
1682 | if (unlinkat(dfd, SvPVX_const(*temp_psv), 0) < 0 && |
1683 | NotSupported(errno)) | |
1684 | UNLINK(SvPVX(*temp_psv)); | |
dddabd86 TC |
1685 | #else |
1686 | UNLINK(SvPVX(*temp_psv)); | |
1687 | #endif | |
3c67ad9b TC |
1688 | /* diag_listed_as: Cannot complete in-place edit of %s: %s */ |
1689 | Perl_croak(aTHX_ "Cannot complete in-place edit of %s: failed to rename work file '%s' to '%s': %s", | |
1690 | orig_pv, SvPVX(*temp_psv), orig_pv, Strerror(errno)); | |
e0d4aead TC |
1691 | } |
1692 | abort_inplace: | |
1693 | UNLINK(SvPVX_const(*temp_psv)); | |
1694 | retval = FALSE; | |
1695 | } | |
1696 | #ifndef HAS_RENAME | |
1697 | UNLINK(SvPVX(*temp_psv)); | |
1698 | #endif | |
1699 | } | |
1700 | else { | |
733612e0 | 1701 | #ifdef ARGV_USE_ATFUNCTIONS |
184f90dc TC |
1702 | if (unlinkat(dfd, SvPVX_const(*temp_psv), 0) && |
1703 | NotSupported(errno)) | |
1704 | UNLINK(SvPVX_const(*temp_psv)); | |
1705 | ||
733612e0 | 1706 | #else |
e0d4aead | 1707 | UNLINK(SvPVX_const(*temp_psv)); |
733612e0 | 1708 | #endif |
e0d4aead TC |
1709 | if (!not_implicit) { |
1710 | Perl_croak(aTHX_ "Failed to close in-place work file %s: %s", | |
1711 | SvPVX(*temp_psv), Strerror(errno)); | |
1712 | } | |
1713 | } | |
05df5c88 | 1714 | freext: |
e0d4aead TC |
1715 | mg_freeext((SV*)io, PERL_MAGIC_uvar, &argvout_vtbl); |
1716 | } | |
1717 | else { | |
1718 | retval = io_close(io, NULL, not_implicit, FALSE); | |
1719 | } | |
517844ec | 1720 | if (not_implicit) { |
1193dd27 IZ |
1721 | IoLINES(io) = 0; |
1722 | IoPAGE(io) = 0; | |
1723 | IoLINES_LEFT(io) = IoPAGE_LEN(io); | |
1724 | } | |
50952442 | 1725 | IoTYPE(io) = IoTYPE_CLOSED; |
1193dd27 IZ |
1726 | return retval; |
1727 | } | |
1728 | ||
1729 | bool | |
96d7c888 | 1730 | Perl_io_close(pTHX_ IO *io, GV *gv, bool not_implicit, bool warn_on_fail) |
1193dd27 IZ |
1731 | { |
1732 | bool retval = FALSE; | |
1193dd27 | 1733 | |
7918f24d NC |
1734 | PERL_ARGS_ASSERT_IO_CLOSE; |
1735 | ||
8990e307 | 1736 | if (IoIFP(io)) { |
50952442 | 1737 | if (IoTYPE(io) == IoTYPE_PIPE) { |
4373e329 | 1738 | const int status = PerlProc_pclose(IoIFP(io)); |
f2b5be74 | 1739 | if (not_implicit) { |
37038d91 | 1740 | STATUS_NATIVE_CHILD_SET(status); |
e5218da5 | 1741 | retval = (STATUS_UNIX == 0); |
f2b5be74 GS |
1742 | } |
1743 | else { | |
1744 | retval = (status != -1); | |
1745 | } | |
a687059c | 1746 | } |
50952442 | 1747 | else if (IoTYPE(io) == IoTYPE_STD) |
a687059c LW |
1748 | retval = TRUE; |
1749 | else { | |
8990e307 | 1750 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */ |
0bcc34c2 | 1751 | const bool prev_err = PerlIO_error(IoOFP(io)); |
f4725fad FC |
1752 | #ifdef USE_PERLIO |
1753 | if (prev_err) | |
1754 | PerlIO_restore_errno(IoOFP(io)); | |
1755 | #endif | |
e199e3be | 1756 | retval = (PerlIO_close(IoOFP(io)) != EOF && !prev_err); |
760ac839 | 1757 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ |
c2ab57d4 | 1758 | } |
e199e3be | 1759 | else { |
0bcc34c2 | 1760 | const bool prev_err = PerlIO_error(IoIFP(io)); |
f4725fad FC |
1761 | #ifdef USE_PERLIO |
1762 | if (prev_err) | |
1763 | PerlIO_restore_errno(IoIFP(io)); | |
1764 | #endif | |
e199e3be RGS |
1765 | retval = (PerlIO_close(IoIFP(io)) != EOF && !prev_err); |
1766 | } | |
a687059c | 1767 | } |
4608196e | 1768 | IoOFP(io) = IoIFP(io) = NULL; |
96d7c888 FC |
1769 | |
1770 | if (warn_on_fail && !retval) { | |
1771 | if (gv) | |
1772 | Perl_ck_warner_d(aTHX_ packWARN(WARN_IO), | |
1773 | "Warning: unable to close filehandle %" | |
147e3846 | 1774 | HEKf " properly: %" SVf, |
ac892e4a DM |
1775 | HEKfARG(GvNAME_HEK(gv)), |
1776 | SVfARG(get_sv("!",GV_ADD))); | |
96d7c888 FC |
1777 | else |
1778 | Perl_ck_warner_d(aTHX_ packWARN(WARN_IO), | |
1779 | "Warning: unable to close filehandle " | |
147e3846 | 1780 | "properly: %" SVf, |
ac892e4a | 1781 | SVfARG(get_sv("!",GV_ADD))); |
96d7c888 | 1782 | } |
79072805 | 1783 | } |
f2b5be74 | 1784 | else if (not_implicit) { |
93189314 | 1785 | SETERRNO(EBADF,SS_IVCHAN); |
20408e3c | 1786 | } |
1193dd27 | 1787 | |
a687059c LW |
1788 | return retval; |
1789 | } | |
1790 | ||
1791 | bool | |
864dbfa3 | 1792 | Perl_do_eof(pTHX_ GV *gv) |
a687059c | 1793 | { |
eb578fdb | 1794 | IO * const io = GvIO(gv); |
a687059c | 1795 | |
7918f24d NC |
1796 | PERL_ARGS_ASSERT_DO_EOF; |
1797 | ||
79072805 | 1798 | if (!io) |
a687059c | 1799 | return TRUE; |
7716c5c5 | 1800 | else if (IoTYPE(io) == IoTYPE_WRONLY) |
a5390457 | 1801 | report_wrongway_fh(gv, '>'); |
a687059c | 1802 | |
8990e307 | 1803 | while (IoIFP(io)) { |
760ac839 | 1804 | if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */ |
a20bf0c3 | 1805 | if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */ |
760ac839 LW |
1806 | return FALSE; /* this is the most usual case */ |
1807 | } | |
a687059c | 1808 | |
79852593 NC |
1809 | { |
1810 | /* getc and ungetc can stomp on errno */ | |
4ee39169 | 1811 | dSAVE_ERRNO; |
79852593 NC |
1812 | const int ch = PerlIO_getc(IoIFP(io)); |
1813 | if (ch != EOF) { | |
1814 | (void)PerlIO_ungetc(IoIFP(io),ch); | |
4ee39169 | 1815 | RESTORE_ERRNO; |
79852593 NC |
1816 | return FALSE; |
1817 | } | |
4ee39169 | 1818 | RESTORE_ERRNO; |
a687059c | 1819 | } |
fab3f3a7 | 1820 | |
760ac839 | 1821 | if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) { |
a20bf0c3 JH |
1822 | if (PerlIO_get_cnt(IoIFP(io)) < -1) |
1823 | PerlIO_set_cnt(IoIFP(io),-1); | |
760ac839 | 1824 | } |
533c011a | 1825 | if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */ |
157fb5a1 | 1826 | if (gv != PL_argvgv || !nextargv(gv, FALSE)) /* get another fp handy */ |
a687059c LW |
1827 | return TRUE; |
1828 | } | |
1829 | else | |
1830 | return TRUE; /* normal fp, definitely end of file */ | |
1831 | } | |
1832 | return TRUE; | |
1833 | } | |
1834 | ||
5ff3f7a4 | 1835 | Off_t |
864dbfa3 | 1836 | Perl_do_tell(pTHX_ GV *gv) |
a687059c | 1837 | { |
9c9f25b8 | 1838 | IO *const io = GvIO(gv); |
eb578fdb | 1839 | PerlIO *fp; |
a687059c | 1840 | |
7918f24d NC |
1841 | PERL_ARGS_ASSERT_DO_TELL; |
1842 | ||
9c9f25b8 | 1843 | if (io && (fp = IoIFP(io))) { |
8903cb82 | 1844 | return PerlIO_tell(fp); |
96e4d5b1 | 1845 | } |
51087808 | 1846 | report_evil_fh(gv); |
93189314 | 1847 | SETERRNO(EBADF,RMS_IFI); |
5ff3f7a4 | 1848 | return (Off_t)-1; |
a687059c LW |
1849 | } |
1850 | ||
1851 | bool | |
864dbfa3 | 1852 | Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence) |
a687059c | 1853 | { |
9c9f25b8 | 1854 | IO *const io = GvIO(gv); |
eb578fdb | 1855 | PerlIO *fp; |
a687059c | 1856 | |
9c9f25b8 | 1857 | if (io && (fp = IoIFP(io))) { |
8903cb82 | 1858 | return PerlIO_seek(fp, pos, whence) >= 0; |
137443ea | 1859 | } |
51087808 | 1860 | report_evil_fh(gv); |
93189314 | 1861 | SETERRNO(EBADF,RMS_IFI); |
a687059c LW |
1862 | return FALSE; |
1863 | } | |
1864 | ||
97cc44eb | 1865 | Off_t |
864dbfa3 | 1866 | Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence) |
8903cb82 | 1867 | { |
9c9f25b8 | 1868 | IO *const io = GvIO(gv); |
eb578fdb | 1869 | PerlIO *fp; |
8903cb82 | 1870 | |
7918f24d NC |
1871 | PERL_ARGS_ASSERT_DO_SYSSEEK; |
1872 | ||
375ed12a JH |
1873 | if (io && (fp = IoIFP(io))) { |
1874 | int fd = PerlIO_fileno(fp); | |
07bd88da JH |
1875 | if (fd < 0 || (whence == SEEK_SET && pos < 0)) { |
1876 | SETERRNO(EINVAL,LIB_INVARG); | |
1877 | return -1; | |
1878 | } else { | |
375ed12a JH |
1879 | return PerlLIO_lseek(fd, pos, whence); |
1880 | } | |
1881 | } | |
51087808 | 1882 | report_evil_fh(gv); |
93189314 | 1883 | SETERRNO(EBADF,RMS_IFI); |
d9b3e12d | 1884 | return (Off_t)-1; |
8903cb82 | 1885 | } |
1886 | ||
6ff81951 | 1887 | int |
a79b25b7 | 1888 | Perl_mode_from_discipline(pTHX_ const char *s, STRLEN len) |
16fe6d59 GS |
1889 | { |
1890 | int mode = O_BINARY; | |
81611534 | 1891 | PERL_UNUSED_CONTEXT; |
a79b25b7 | 1892 | if (s) { |
16fe6d59 GS |
1893 | while (*s) { |
1894 | if (*s == ':') { | |
1895 | switch (s[1]) { | |
1896 | case 'r': | |
e963d6d2 | 1897 | if (s[2] == 'a' && s[3] == 'w' |
16fe6d59 GS |
1898 | && (!s[4] || s[4] == ':' || isSPACE(s[4]))) |
1899 | { | |
1900 | mode = O_BINARY; | |
1901 | s += 4; | |
1902 | len -= 4; | |
1903 | break; | |
1904 | } | |
924ba076 | 1905 | /* FALLTHROUGH */ |
16fe6d59 | 1906 | case 'c': |
e963d6d2 | 1907 | if (s[2] == 'r' && s[3] == 'l' && s[4] == 'f' |
16fe6d59 GS |
1908 | && (!s[5] || s[5] == ':' || isSPACE(s[5]))) |
1909 | { | |
1910 | mode = O_TEXT; | |
1911 | s += 5; | |
1912 | len -= 5; | |
1913 | break; | |
1914 | } | |
924ba076 | 1915 | /* FALLTHROUGH */ |
16fe6d59 GS |
1916 | default: |
1917 | goto fail_discipline; | |
1918 | } | |
1919 | } | |
1920 | else if (isSPACE(*s)) { | |
1921 | ++s; | |
1922 | --len; | |
1923 | } | |
1924 | else { | |
4373e329 | 1925 | const char *end; |
7b52d656 | 1926 | fail_discipline: |
9a73c0b8 | 1927 | end = (char *) memchr(s+1, ':', len); |
16fe6d59 GS |
1928 | if (!end) |
1929 | end = s+len; | |
60382766 | 1930 | #ifndef PERLIO_LAYERS |
363c40c4 | 1931 | Perl_croak(aTHX_ "IO layers (like '%.*s') unavailable", end-s, s); |
60382766 | 1932 | #else |
18a33fb5 | 1933 | len -= end-s; |
60382766 NIS |
1934 | s = end; |
1935 | #endif | |
16fe6d59 GS |
1936 | } |
1937 | } | |
1938 | } | |
1939 | return mode; | |
1940 | } | |
1941 | ||
58e24eff | 1942 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) |
27da23d5 JH |
1943 | I32 |
1944 | my_chsize(int fd, Off_t length) | |
6eb13c3b | 1945 | { |
58e24eff SH |
1946 | #ifdef F_FREESP |
1947 | /* code courtesy of William Kucharski */ | |
1948 | #define HAS_CHSIZE | |
1949 | ||
c623ac67 | 1950 | Stat_t filebuf; |
6eb13c3b | 1951 | |
3028581b | 1952 | if (PerlLIO_fstat(fd, &filebuf) < 0) |
6eb13c3b LW |
1953 | return -1; |
1954 | ||
1955 | if (filebuf.st_size < length) { | |
1956 | ||
1957 | /* extend file length */ | |
1958 | ||
3028581b | 1959 | if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0) |
6eb13c3b LW |
1960 | return -1; |
1961 | ||
1962 | /* write a "0" byte */ | |
1963 | ||
3028581b | 1964 | if ((PerlLIO_write(fd, "", 1)) != 1) |
6eb13c3b LW |
1965 | return -1; |
1966 | } | |
1967 | else { | |
1968 | /* truncate length */ | |
35da51f7 | 1969 | struct flock fl; |
6eb13c3b LW |
1970 | fl.l_whence = 0; |
1971 | fl.l_len = 0; | |
1972 | fl.l_start = length; | |
a0d0e21e | 1973 | fl.l_type = F_WRLCK; /* write lock on file space */ |
6eb13c3b LW |
1974 | |
1975 | /* | |
a0d0e21e | 1976 | * This relies on the UNDOCUMENTED F_FREESP argument to |
6eb13c3b LW |
1977 | * fcntl(2), which truncates the file so that it ends at the |
1978 | * position indicated by fl.l_start. | |
1979 | * | |
1980 | * Will minor miracles never cease? | |
1981 | */ | |
1982 | ||
a0d0e21e | 1983 | if (fcntl(fd, F_FREESP, &fl) < 0) |
6eb13c3b LW |
1984 | return -1; |
1985 | ||
1986 | } | |
6eb13c3b | 1987 | return 0; |
58e24eff | 1988 | #else |
27da23d5 | 1989 | Perl_croak_nocontext("truncate not implemented"); |
a0d0e21e | 1990 | #endif /* F_FREESP */ |
27da23d5 | 1991 | return -1; |
58e24eff SH |
1992 | } |
1993 | #endif /* !HAS_TRUNCATE && !HAS_CHSIZE */ | |
ff8e2863 | 1994 | |
a687059c | 1995 | bool |
5aaab254 | 1996 | Perl_do_print(pTHX_ SV *sv, PerlIO *fp) |
a687059c | 1997 | { |
7918f24d NC |
1998 | PERL_ARGS_ASSERT_DO_PRINT; |
1999 | ||
79072805 LW |
2000 | /* assuming fp is checked earlier */ |
2001 | if (!sv) | |
2002 | return TRUE; | |
e9950d3b NC |
2003 | if (SvTYPE(sv) == SVt_IV && SvIOK(sv)) { |
2004 | assert(!SvGMAGICAL(sv)); | |
2005 | if (SvIsUV(sv)) | |
147e3846 | 2006 | PerlIO_printf(fp, "%" UVuf, (UV)SvUVX(sv)); |
e9950d3b | 2007 | else |
147e3846 | 2008 | PerlIO_printf(fp, "%" IVdf, (IV)SvIVX(sv)); |
e9950d3b NC |
2009 | return !PerlIO_error(fp); |
2010 | } | |
2011 | else { | |
2012 | STRLEN len; | |
676f44e7 | 2013 | /* Do this first to trigger any overloading. */ |
e9950d3b NC |
2014 | const char *tmps = SvPV_const(sv, len); |
2015 | U8 *tmpbuf = NULL; | |
2016 | bool happy = TRUE; | |
2017 | ||
d791f93f KW |
2018 | if (PerlIO_isutf8(fp)) { /* If the stream is utf8 ... */ |
2019 | if (!SvUTF8(sv)) { /* Convert to utf8 if necessary */ | |
676f44e7 NC |
2020 | /* We don't modify the original scalar. */ |
2021 | tmpbuf = bytes_to_utf8((const U8*) tmps, &len); | |
2022 | tmps = (char *) tmpbuf; | |
2023 | } | |
a099aed4 | 2024 | else if (ckWARN4_d(WARN_UTF8, WARN_SURROGATE, WARN_NON_UNICODE, WARN_NONCHAR)) { |
0876b9a0 KW |
2025 | (void) check_utf8_print((const U8*) tmps, len); |
2026 | } | |
d791f93f KW |
2027 | } /* else stream isn't utf8 */ |
2028 | else if (DO_UTF8(sv)) { /* But if is utf8 internally, attempt to | |
2029 | convert to bytes */ | |
676f44e7 NC |
2030 | STRLEN tmplen = len; |
2031 | bool utf8 = TRUE; | |
35da51f7 | 2032 | U8 * const result = bytes_from_utf8((const U8*) tmps, &tmplen, &utf8); |
676f44e7 | 2033 | if (!utf8) { |
d791f93f KW |
2034 | |
2035 | /* Here, succeeded in downgrading from utf8. Set up to below | |
2036 | * output the converted value */ | |
676f44e7 NC |
2037 | tmpbuf = result; |
2038 | tmps = (char *) tmpbuf; | |
2039 | len = tmplen; | |
2040 | } | |
d791f93f KW |
2041 | else { /* Non-utf8 output stream, but string only representable in |
2042 | utf8 */ | |
676f44e7 | 2043 | assert((char *)result == tmps); |
9b387841 | 2044 | Perl_ck_warner_d(aTHX_ packWARN(WARN_UTF8), |
21630838 FC |
2045 | "Wide character in %s", |
2046 | PL_op ? OP_DESC(PL_op) : "print" | |
2047 | ); | |
0876b9a0 KW |
2048 | /* Could also check that isn't one of the things to avoid |
2049 | * in utf8 by using check_utf8_print(), but not doing so, | |
2050 | * since the stream isn't a UTF8 stream */ | |
ae798467 NIS |
2051 | } |
2052 | } | |
e9950d3b NC |
2053 | /* To detect whether the process is about to overstep its |
2054 | * filesize limit we would need getrlimit(). We could then | |
2055 | * also transparently raise the limit with setrlimit() -- | |
2056 | * but only until the system hard limit/the filesystem limit, | |
2057 | * at which we would get EPERM. Note that when using buffered | |
2058 | * io the write failure can be delayed until the flush/close. --jhi */ | |
2059 | if (len && (PerlIO_write(fp,tmps,len) == 0)) | |
2060 | happy = FALSE; | |
2061 | Safefree(tmpbuf); | |
2062 | return happy ? !PerlIO_error(fp) : FALSE; | |
ff8e2863 | 2063 | } |
a687059c LW |
2064 | } |
2065 | ||
79072805 | 2066 | I32 |
0d7d409d | 2067 | Perl_my_stat_flags(pTHX_ const U32 flags) |
a687059c | 2068 | { |
39644a26 | 2069 | dSP; |
79072805 | 2070 | IO *io; |
2dd78f96 | 2071 | GV* gv; |
79072805 | 2072 | |
533c011a | 2073 | if (PL_op->op_flags & OPf_REF) { |
2dd78f96 | 2074 | gv = cGVOP_gv; |
748a9306 | 2075 | do_fstat: |
97c8f3e6 Z |
2076 | if (gv == PL_defgv) { |
2077 | if (PL_laststatval < 0) | |
2078 | SETERRNO(EBADF,RMS_IFI); | |
5228a96c | 2079 | return PL_laststatval; |
97c8f3e6 | 2080 | } |
2dd78f96 | 2081 | io = GvIO(gv); |
ad02613c | 2082 | do_fstat_have_io: |
5228a96c | 2083 | PL_laststype = OP_STAT; |
bd5f6c01 | 2084 | PL_statgv = gv ? gv : (GV *)io; |
8062ff11 | 2085 | SvPVCLEAR(PL_statname); |
77616968 | 2086 | if (io) { |
5228a96c | 2087 | if (IoIFP(io)) { |
375ed12a | 2088 | int fd = PerlIO_fileno(IoIFP(io)); |
77616968 JH |
2089 | if (fd < 0) { |
2090 | /* E.g. PerlIO::scalar has no real fd. */ | |
97c8f3e6 | 2091 | SETERRNO(EBADF,RMS_IFI); |
77616968 JH |
2092 | return (PL_laststatval = -1); |
2093 | } else { | |
375ed12a JH |
2094 | return (PL_laststatval = PerlLIO_fstat(fd, &PL_statcache)); |
2095 | } | |
5228a96c | 2096 | } else if (IoDIRP(io)) { |
3497a01f | 2097 | return (PL_laststatval = PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache)); |
5228a96c | 2098 | } |
5228a96c | 2099 | } |
3888144c FC |
2100 | PL_laststatval = -1; |
2101 | report_evil_fh(gv); | |
97c8f3e6 | 2102 | SETERRNO(EBADF,RMS_IFI); |
3888144c | 2103 | return -1; |
a687059c | 2104 | } |
d2c4d2d1 | 2105 | else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t)) |
8db8f6b6 FC |
2106 | == OPpFT_STACKED) |
2107 | return PL_laststatval; | |
d2c4d2d1 FC |
2108 | else { |
2109 | SV* const sv = TOPs; | |
a155eb05 | 2110 | const char *s, *d; |
4ecd490c | 2111 | STRLEN len; |
094a3eec | 2112 | if ((gv = MAYBE_DEREF_GV_flags(sv,flags))) { |
748a9306 LW |
2113 | goto do_fstat; |
2114 | } | |
ad02613c | 2115 | else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) { |
a45c7426 | 2116 | io = MUTABLE_IO(SvRV(sv)); |
7f39519f | 2117 | gv = NULL; |
ad02613c SP |
2118 | goto do_fstat_have_io; |
2119 | } | |
748a9306 | 2120 | |
0d7d409d | 2121 | s = SvPV_flags_const(sv, len, flags); |
a0714e2c | 2122 | PL_statgv = NULL; |
4ecd490c | 2123 | sv_setpvn(PL_statname, s, len); |
a155eb05 | 2124 | d = SvPVX_const(PL_statname); /* s now NUL-terminated */ |
3280af22 | 2125 | PL_laststype = OP_STAT; |
a155eb05 TC |
2126 | if (!IS_SAFE_PATHNAME(s, len, OP_NAME(PL_op))) { |
2127 | PL_laststatval = -1; | |
2128 | } | |
2129 | else { | |
2130 | PL_laststatval = PerlLIO_stat(d, &PL_statcache); | |
2131 | } | |
7cb3f959 | 2132 | if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && should_warn_nl(s)) { |
7347ee54 | 2133 | GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral); /* PL_warn_nl is constant */ |
9014280d | 2134 | Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat"); |
7347ee54 | 2135 | GCC_DIAG_RESTORE_STMT; |
5d37acd6 | 2136 | } |
3280af22 | 2137 | return PL_laststatval; |
a687059c LW |
2138 | } |
2139 | } | |
2140 | ||
fbb0b3b3 | 2141 | |
79072805 | 2142 | I32 |
0d7d409d | 2143 | Perl_my_lstat_flags(pTHX_ const U32 flags) |
c623bd54 | 2144 | { |
a1894d81 | 2145 | static const char* const no_prev_lstat = "The stat preceding -l _ wasn't an lstat"; |
39644a26 | 2146 | dSP; |
b16276bb | 2147 | const char *file; |
a155eb05 | 2148 | STRLEN len; |
cd22fad3 | 2149 | SV* const sv = TOPs; |
5840701a | 2150 | bool isio = FALSE; |
533c011a | 2151 | if (PL_op->op_flags & OPf_REF) { |
638eceb6 | 2152 | if (cGVOP_gv == PL_defgv) { |
3280af22 | 2153 | if (PL_laststype != OP_LSTAT) |
0157ef98 | 2154 | Perl_croak(aTHX_ "%s", no_prev_lstat); |
97c8f3e6 Z |
2155 | if (PL_laststatval < 0) |
2156 | SETERRNO(EBADF,RMS_IFI); | |
3280af22 | 2157 | return PL_laststatval; |
fe14fcc3 | 2158 | } |
31b139ba | 2159 | PL_laststatval = -1; |
5d3e98de | 2160 | if (ckWARN(WARN_IO)) { |
5840701a | 2161 | /* diag_listed_as: Use of -l on filehandle%s */ |
d0c0e7dd | 2162 | Perl_warner(aTHX_ packWARN(WARN_IO), |
147e3846 | 2163 | "Use of -l on filehandle %" HEKf, |
d0c0e7dd | 2164 | HEKfARG(GvENAME_HEK(cGVOP_gv))); |
5d3e98de | 2165 | } |
97c8f3e6 | 2166 | SETERRNO(EBADF,RMS_IFI); |
31b139ba | 2167 | return -1; |
fe14fcc3 | 2168 | } |
8db8f6b6 FC |
2169 | if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t)) |
2170 | == OPpFT_STACKED) { | |
1f26655e | 2171 | if (PL_laststype != OP_LSTAT) |
0157ef98 | 2172 | Perl_croak(aTHX_ "%s", no_prev_lstat); |
1f26655e | 2173 | return PL_laststatval; |
cd22fad3 | 2174 | } |
c623bd54 | 2175 | |
3280af22 | 2176 | PL_laststype = OP_LSTAT; |
a0714e2c | 2177 | PL_statgv = NULL; |
5840701a FC |
2178 | if ( ( (SvROK(sv) && ( isGV_with_GP(SvRV(sv)) |
2179 | || (isio = SvTYPE(SvRV(sv)) == SVt_PVIO) ) | |
2180 | ) | |
2181 | || isGV_with_GP(sv) | |
2182 | ) | |
2183 | && ckWARN(WARN_IO)) { | |
2184 | if (isio) | |
2185 | /* diag_listed_as: Use of -l on filehandle%s */ | |
2186 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
2187 | "Use of -l on filehandle"); | |
2188 | else | |
2189 | /* diag_listed_as: Use of -l on filehandle%s */ | |
2190 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
147e3846 | 2191 | "Use of -l on filehandle %" HEKf, |
10bafe90 BF |
2192 | HEKfARG(GvENAME_HEK((const GV *) |
2193 | (SvROK(sv) ? SvRV(sv) : sv)))); | |
cd22fad3 | 2194 | } |
a155eb05 | 2195 | file = SvPV_flags_const(sv, len, flags); |
b16276bb | 2196 | sv_setpv(PL_statname,file); |
a155eb05 TC |
2197 | if (!IS_SAFE_PATHNAME(file, len, OP_NAME(PL_op))) { |
2198 | PL_laststatval = -1; | |
2199 | } | |
2200 | else { | |
2201 | PL_laststatval = PerlLIO_lstat(file,&PL_statcache); | |
2202 | } | |
7cb3f959 | 2203 | if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && should_warn_nl(file)) { |
7347ee54 | 2204 | GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral); /* PL_warn_nl is constant */ |
5d37acd6 | 2205 | Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat"); |
7347ee54 | 2206 | GCC_DIAG_RESTORE_STMT; |
5d37acd6 | 2207 | } |
3280af22 | 2208 | return PL_laststatval; |
c623bd54 LW |
2209 | } |
2210 | ||
a0f2c8ec JD |
2211 | static void |
2212 | S_exec_failed(pTHX_ const char *cmd, int fd, int do_report) | |
2213 | { | |
2214 | const int e = errno; | |
7918f24d | 2215 | PERL_ARGS_ASSERT_EXEC_FAILED; |
738ab09f AB |
2216 | |
2217 | if (ckWARN(WARN_EXEC)) | |
2218 | Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s", | |
2219 | cmd, Strerror(e)); | |
a0f2c8ec | 2220 | if (do_report) { |
b469f1e0 JH |
2221 | /* XXX silently ignore failures */ |
2222 | PERL_UNUSED_RESULT(PerlLIO_write(fd, (void*)&e, sizeof(int))); | |
a0f2c8ec JD |
2223 | PerlLIO_close(fd); |
2224 | } | |
2225 | } | |
2226 | ||
738ab09f | 2227 | bool |
5aaab254 | 2228 | Perl_do_aexec5(pTHX_ SV *really, SV **mark, SV **sp, |
2aa1486d | 2229 | int fd, int do_report) |
d5a9bfb0 | 2230 | { |
27da23d5 | 2231 | dVAR; |
7918f24d | 2232 | PERL_ARGS_ASSERT_DO_AEXEC5; |
e37778c2 | 2233 | #if defined(__SYMBIAN32__) || defined(__LIBCATAMOUNT__) |
cd39f2b6 JH |
2234 | Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system"); |
2235 | #else | |
2fcab330 | 2236 | assert(sp >= mark); |
282fc0b3 | 2237 | ENTER; |
2fcab330 | 2238 | { |
282fc0b3 | 2239 | const char **argv, **a; |
6136c704 | 2240 | const char *tmps = NULL; |
282fc0b3 Z |
2241 | Newx(argv, sp - mark + 1, const char*); |
2242 | SAVEFREEPV(argv); | |
2243 | a = argv; | |
890ce7af | 2244 | |
79072805 | 2245 | while (++mark <= sp) { |
282fc0b3 Z |
2246 | if (*mark) { |
2247 | char *arg = savepv(SvPV_nolen_const(*mark)); | |
2248 | SAVEFREEPV(arg); | |
2249 | *a++ = arg; | |
2250 | } else | |
a687059c LW |
2251 | *a++ = ""; |
2252 | } | |
6136c704 | 2253 | *a = NULL; |
282fc0b3 Z |
2254 | if (really) { |
2255 | tmps = savepv(SvPV_nolen_const(really)); | |
2256 | SAVEFREEPV(tmps); | |
2257 | } | |
2258 | if ((!really && argv[0] && *argv[0] != '/') || | |
91b2752f | 2259 | (really && *tmps != '/')) /* will execvp use PATH? */ |
79072805 | 2260 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
b35112e7 | 2261 | PERL_FPU_PRE_EXEC |
839a9f02 | 2262 | if (really && *tmps) { |
282fc0b3 Z |
2263 | PerlProc_execvp(tmps,EXEC_ARGV_CAST(argv)); |
2264 | } else if (argv[0]) { | |
2265 | PerlProc_execvp(argv[0],EXEC_ARGV_CAST(argv)); | |
2fcab330 DIM |
2266 | } else { |
2267 | SETERRNO(ENOENT,RMS_FNF); | |
2268 | } | |
b35112e7 | 2269 | PERL_FPU_POST_EXEC |
282fc0b3 | 2270 | S_exec_failed(aTHX_ (really ? tmps : argv[0] ? argv[0] : ""), fd, do_report); |
a687059c | 2271 | } |
282fc0b3 | 2272 | LEAVE; |
cd39f2b6 | 2273 | #endif |
738ab09f | 2274 | return FALSE; |
a687059c LW |
2275 | } |
2276 | ||
9555a685 | 2277 | #ifdef PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION |
e446cec8 | 2278 | |
738ab09f | 2279 | bool |
2fbb330f | 2280 | Perl_do_exec3(pTHX_ const char *incmd, int fd, int do_report) |
e446cec8 | 2281 | { |
27da23d5 | 2282 | dVAR; |
282fc0b3 | 2283 | const char **argv, **a; |
eb578fdb | 2284 | char *s; |
15db3ae2 | 2285 | char *buf; |
2fbb330f | 2286 | char *cmd; |
2fbb330f | 2287 | /* Make a copy so we can change it */ |
6fca0082 | 2288 | const Size_t cmdlen = strlen(incmd) + 1; |
7918f24d NC |
2289 | |
2290 | PERL_ARGS_ASSERT_DO_EXEC3; | |
2291 | ||
282fc0b3 | 2292 | ENTER; |
15db3ae2 | 2293 | Newx(buf, cmdlen, char); |
282fc0b3 | 2294 | SAVEFREEPV(buf); |
15db3ae2 | 2295 | cmd = buf; |
cfff9797 | 2296 | memcpy(cmd, incmd, cmdlen); |
a687059c | 2297 | |
748a9306 LW |
2298 | while (*cmd && isSPACE(*cmd)) |
2299 | cmd++; | |
2300 | ||
a687059c LW |
2301 | /* save an extra exec if possible */ |
2302 | ||
bf38876a | 2303 | #ifdef CSH |
d05c1ba0 | 2304 | { |
0c19750d | 2305 | char flags[PERL_FLAGS_MAX]; |
d05c1ba0 | 2306 | if (strnEQ(cmd,PL_cshname,PL_cshlen) && |
c8b388b0 | 2307 | strBEGINs(cmd+PL_cshlen," -c")) { |
28f0d0ec | 2308 | my_strlcpy(flags, "-c", PERL_FLAGS_MAX); |
d05c1ba0 JH |
2309 | s = cmd+PL_cshlen+3; |
2310 | if (*s == 'f') { | |
2311 | s++; | |
28f0d0ec | 2312 | my_strlcat(flags, "f", PERL_FLAGS_MAX - 2); |
d05c1ba0 JH |
2313 | } |
2314 | if (*s == ' ') | |
2315 | s++; | |
2316 | if (*s++ == '\'') { | |
0bcc34c2 | 2317 | char * const ncmd = s; |
d05c1ba0 JH |
2318 | |
2319 | while (*s) | |
2320 | s++; | |
2321 | if (s[-1] == '\n') | |
2322 | *--s = '\0'; | |
2323 | if (s[-1] == '\'') { | |
2324 | *--s = '\0'; | |
b35112e7 | 2325 | PERL_FPU_PRE_EXEC |
738ab09f | 2326 | PerlProc_execl(PL_cshname, "csh", flags, ncmd, (char*)NULL); |
b35112e7 | 2327 | PERL_FPU_POST_EXEC |
d05c1ba0 | 2328 | *s = '\''; |
a0f2c8ec | 2329 | S_exec_failed(aTHX_ PL_cshname, fd, do_report); |
282fc0b3 | 2330 | goto leave; |
d05c1ba0 JH |
2331 | } |
2332 | } | |
a687059c LW |
2333 | } |
2334 | } | |
bf38876a | 2335 | #endif /* CSH */ |
a687059c LW |
2336 | |
2337 | /* see if there are shell metacharacters in it */ | |
2338 | ||
748a9306 LW |
2339 | if (*cmd == '.' && isSPACE(cmd[1])) |
2340 | goto doshell; | |
2341 | ||
c8b388b0 | 2342 | if (strBEGINs(cmd,"exec") && isSPACE(cmd[4])) |
748a9306 LW |
2343 | goto doshell; |
2344 | ||
294b3b39 | 2345 | s = cmd; |
0eb30aeb | 2346 | while (isWORDCHAR(*s)) |
294b3b39 | 2347 | s++; /* catch VAR=val gizmo */ |
63f2c1e1 LW |
2348 | if (*s == '=') |
2349 | goto doshell; | |
748a9306 | 2350 | |
a687059c | 2351 | for (s = cmd; *s; s++) { |
d05c1ba0 JH |
2352 | if (*s != ' ' && !isALPHA(*s) && |
2353 | strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) { | |
a687059c LW |
2354 | if (*s == '\n' && !s[1]) { |
2355 | *s = '\0'; | |
2356 | break; | |
2357 | } | |
603a98b0 IZ |
2358 | /* handle the 2>&1 construct at the end */ |
2359 | if (*s == '>' && s[1] == '&' && s[2] == '1' | |
2360 | && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2]) | |
2361 | && (!s[3] || isSPACE(s[3]))) | |
2362 | { | |
6867be6d | 2363 | const char *t = s + 3; |
603a98b0 IZ |
2364 | |
2365 | while (*t && isSPACE(*t)) | |
2366 | ++t; | |
943bbd07 | 2367 | if (!*t && (PerlLIO_dup2(1,2) != -1)) { |
603a98b0 IZ |
2368 | s[-2] = '\0'; |
2369 | break; | |
2370 | } | |
2371 | } | |
a687059c | 2372 | doshell: |
b35112e7 | 2373 | PERL_FPU_PRE_EXEC |
738ab09f | 2374 | PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char *)NULL); |
b35112e7 | 2375 | PERL_FPU_POST_EXEC |
a0f2c8ec | 2376 | S_exec_failed(aTHX_ PL_sh_path, fd, do_report); |
282fc0b3 | 2377 | goto leave; |
a687059c LW |
2378 | } |
2379 | } | |
748a9306 | 2380 | |
282fc0b3 Z |
2381 | Newx(argv, (s - cmd) / 2 + 2, const char*); |
2382 | SAVEFREEPV(argv); | |
2383 | cmd = savepvn(cmd, s-cmd); | |
2384 | SAVEFREEPV(cmd); | |
2385 | a = argv; | |
2386 | for (s = cmd; *s;) { | |
294b3b39 AL |
2387 | while (isSPACE(*s)) |
2388 | s++; | |
a687059c LW |
2389 | if (*s) |
2390 | *(a++) = s; | |
294b3b39 AL |
2391 | while (*s && !isSPACE(*s)) |
2392 | s++; | |
a687059c LW |
2393 | if (*s) |
2394 | *s++ = '\0'; | |
2395 | } | |
6136c704 | 2396 | *a = NULL; |
282fc0b3 | 2397 | if (argv[0]) { |
b35112e7 | 2398 | PERL_FPU_PRE_EXEC |
282fc0b3 | 2399 | PerlProc_execvp(argv[0],EXEC_ARGV_CAST(argv)); |
b35112e7 | 2400 | PERL_FPU_POST_EXEC |
282fc0b3 | 2401 | if (errno == ENOEXEC) /* for system V NIH syndrome */ |
a687059c | 2402 | goto doshell; |
282fc0b3 | 2403 | S_exec_failed(aTHX_ argv[0], fd, do_report); |
a687059c | 2404 | } |
282fc0b3 Z |
2405 | leave: |
2406 | LEAVE; | |
738ab09f | 2407 | return FALSE; |
a687059c LW |
2408 | } |
2409 | ||
6890e559 | 2410 | #endif /* OS2 || WIN32 */ |
760ac839 | 2411 | |
79072805 | 2412 | I32 |
5aaab254 | 2413 | Perl_apply(pTHX_ I32 type, SV **mark, SV **sp) |
a687059c | 2414 | { |
eb578fdb KW |
2415 | I32 val; |
2416 | I32 tot = 0; | |
4634a855 | 2417 | const char *const what = PL_op_name[type]; |
5c144d81 | 2418 | const char *s; |
84c7b88c | 2419 | STRLEN len; |
890ce7af | 2420 | SV ** const oldmark = mark; |
885b4b39 | 2421 | bool killgp = FALSE; |
a687059c | 2422 | |
7918f24d NC |
2423 | PERL_ARGS_ASSERT_APPLY; |
2424 | ||
9a9b5ec9 DM |
2425 | PERL_UNUSED_VAR(what); /* may not be used depending on compile options */ |
2426 | ||
1444765e NC |
2427 | /* Doing this ahead of the switch statement preserves the old behaviour, |
2428 | where attempting to use kill as a taint test test would fail on | |
2429 | platforms where kill was not defined. */ | |
2430 | #ifndef HAS_KILL | |
2431 | if (type == OP_KILL) | |
4634a855 | 2432 | Perl_die(aTHX_ PL_no_func, what); |
1444765e NC |
2433 | #endif |
2434 | #ifndef HAS_CHOWN | |
2435 | if (type == OP_CHOWN) | |
4634a855 | 2436 | Perl_die(aTHX_ PL_no_func, what); |
1444765e NC |
2437 | #endif |
2438 | ||
2439 | ||
20408e3c | 2440 | #define APPLY_TAINT_PROPER() \ |
3280af22 | 2441 | STMT_START { \ |
284167a5 | 2442 | if (TAINT_get) { TAINT_PROPER(what); } \ |
873ef191 | 2443 | } STMT_END |
20408e3c GS |
2444 | |
2445 | /* This is a first heuristic; it doesn't catch tainting magic. */ | |
284167a5 | 2446 | if (TAINTING_get) { |
463ee0b2 | 2447 | while (++mark <= sp) { |
bbce6d69 | 2448 | if (SvTAINTED(*mark)) { |
2449 | TAINT; | |
2450 | break; | |
2451 | } | |
463ee0b2 LW |
2452 | } |
2453 | mark = oldmark; | |
2454 | } | |
a687059c | 2455 | switch (type) { |
79072805 | 2456 | case OP_CHMOD: |
20408e3c | 2457 | APPLY_TAINT_PROPER(); |
79072805 | 2458 | if (++mark <= sp) { |
4ea561bc | 2459 | val = SvIV(*mark); |
20408e3c GS |
2460 | APPLY_TAINT_PROPER(); |
2461 | tot = sp - mark; | |
79072805 | 2462 | while (++mark <= sp) { |
c4aca7d0 | 2463 | GV* gv; |
2ea1cce7 | 2464 | if ((gv = MAYBE_DEREF_GV(*mark))) { |
c4aca7d0 GA |
2465 | if (GvIO(gv) && IoIFP(GvIOp(gv))) { |
2466 | #ifdef HAS_FCHMOD | |
375ed12a | 2467 | int fd = PerlIO_fileno(IoIFP(GvIOn(gv))); |
c4aca7d0 | 2468 | APPLY_TAINT_PROPER(); |
375ed12a JH |
2469 | if (fd < 0) { |
2470 | SETERRNO(EBADF,RMS_IFI); | |
2471 | tot--; | |
2472 | } else if (fchmod(fd, val)) | |
2473 | tot--; | |
c4aca7d0 | 2474 | #else |
b9c6780e | 2475 | Perl_die(aTHX_ PL_no_func, "fchmod"); |
c4aca7d0 GA |
2476 | #endif |
2477 | } | |
2478 | else { | |
8334cae6 | 2479 | SETERRNO(EBADF,RMS_IFI); |
c4aca7d0 GA |
2480 | tot--; |
2481 | } | |
2482 | } | |
c4aca7d0 | 2483 | else { |
41188aa0 | 2484 | const char *name = SvPV_nomg_const(*mark, len); |
c4aca7d0 | 2485 | APPLY_TAINT_PROPER(); |
41188aa0 | 2486 | if (!IS_SAFE_PATHNAME(name, len, "chmod") || |
c8028aa6 TC |
2487 | PerlLIO_chmod(name, val)) { |
2488 | tot--; | |
2489 | } | |
c4aca7d0 | 2490 | } |
a687059c LW |
2491 | } |
2492 | } | |
2493 | break; | |
fe14fcc3 | 2494 | #ifdef HAS_CHOWN |
79072805 | 2495 | case OP_CHOWN: |
20408e3c | 2496 | APPLY_TAINT_PROPER(); |
79072805 | 2497 | if (sp - mark > 2) { |
eb578fdb | 2498 | I32 val2; |
463ee0b2 LW |
2499 | val = SvIVx(*++mark); |
2500 | val2 = SvIVx(*++mark); | |
20408e3c | 2501 | APPLY_TAINT_PROPER(); |
a0d0e21e | 2502 | tot = sp - mark; |
79072805 | 2503 | while (++mark <= sp) { |
c4aca7d0 | 2504 | GV* gv; |
2ea1cce7 | 2505 | if ((gv = MAYBE_DEREF_GV(*mark))) { |
c4aca7d0 GA |
2506 | if (GvIO(gv) && IoIFP(GvIOp(gv))) { |
2507 | #ifdef HAS_FCHOWN | |
375ed12a | 2508 | int fd = PerlIO_fileno(IoIFP(GvIOn(gv))); |
c4aca7d0 | 2509 | APPLY_TAINT_PROPER(); |
375ed12a | 2510 | if (fd < 0) { |
dd1dbff0 | 2511 | SETERRNO(EBADF,RMS_IFI); |
f95ba548 | 2512 | tot--; |
375ed12a | 2513 | } else if (fchown(fd, val, val2)) |
c4aca7d0 GA |
2514 | tot--; |
2515 | #else | |
b9c6780e | 2516 | Perl_die(aTHX_ PL_no_func, "fchown"); |
c4aca7d0 GA |
2517 | #endif |
2518 | } | |
2519 | else { | |
8334cae6 | 2520 | SETERRNO(EBADF,RMS_IFI); |
c4aca7d0 GA |
2521 | tot--; |
2522 | } | |
2523 | } | |
c4aca7d0 | 2524 | else { |
41188aa0 | 2525 | const char *name = SvPV_nomg_const(*mark, len); |
c4aca7d0 | 2526 | APPLY_TAINT_PROPER(); |
41188aa0 | 2527 | if (!IS_SAFE_PATHNAME(name, len, "chown") || |
c8028aa6 | 2528 | PerlLIO_chown(name, val, val2)) { |
c4aca7d0 | 2529 | tot--; |
c8028aa6 | 2530 | } |
c4aca7d0 | 2531 | } |
a687059c LW |
2532 | } |
2533 | } | |
2534 | break; | |
b1248f16 | 2535 | #endif |
a1d180c4 | 2536 | /* |
dd64f1c3 AD |
2537 | XXX Should we make lchown() directly available from perl? |
2538 | For now, we'll let Configure test for HAS_LCHOWN, but do | |
2539 | nothing in the core. | |
2540 | --AD 5/1998 | |
2541 | */ | |
fe14fcc3 | 2542 | #ifdef HAS_KILL |
79072805 | 2543 | case OP_KILL: |
20408e3c | 2544 | APPLY_TAINT_PROPER(); |
55497cff | 2545 | if (mark == sp) |
2546 | break; | |
84c7b88c | 2547 | s = SvPVx_const(*++mark, len); |
c2fd40cb DM |
2548 | if (*s == '-' && isALPHA(s[1])) |
2549 | { | |
2550 | s++; | |
2551 | len--; | |
885b4b39 | 2552 | killgp = TRUE; |
c2fd40cb | 2553 | } |
e02bfb16 | 2554 | if (isALPHA(*s)) { |
84c7b88c | 2555 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') { |
79072805 | 2556 | s += 3; |
84c7b88c BF |
2557 | len -= 3; |
2558 | } | |
2559 | if ((val = whichsig_pvn(s, len)) < 0) | |
147e3846 KW |
2560 | Perl_croak(aTHX_ "Unrecognized signal name \"%" SVf "\"", |
2561 | SVfARG(*mark)); | |
79072805 LW |
2562 | } |
2563 | else | |
c2fd40cb | 2564 | { |
4ea561bc | 2565 | val = SvIV(*mark); |
c2fd40cb DM |
2566 | if (val < 0) |
2567 | { | |
885b4b39 | 2568 | killgp = TRUE; |
c2fd40cb DM |
2569 | val = -val; |
2570 | } | |
2571 | } | |
20408e3c GS |
2572 | APPLY_TAINT_PROPER(); |
2573 | tot = sp - mark; | |
fbcd93f0 | 2574 | |
c2fd40cb | 2575 | while (++mark <= sp) { |
60082291 | 2576 | Pid_t proc; |
c2fd40cb | 2577 | SvGETMAGIC(*mark); |
60082291 | 2578 | if (!(SvNIOK(*mark) || looks_like_number(*mark))) |
c2fd40cb DM |
2579 | Perl_croak(aTHX_ "Can't kill a non-numeric process ID"); |
2580 | proc = SvIV_nomg(*mark); | |
c2fd40cb | 2581 | APPLY_TAINT_PROPER(); |
111f73b5 DM |
2582 | #ifdef HAS_KILLPG |
2583 | /* use killpg in preference, as the killpg() wrapper for Win32 | |
2584 | * understands process groups, but the kill() wrapper doesn't */ | |
2585 | if (killgp ? PerlProc_killpg(proc, val) | |
2586 | : PerlProc_kill(proc, val)) | |
2587 | #else | |
2588 | if (PerlProc_kill(killgp ? -proc: proc, val)) | |
2589 | #endif | |
c2fd40cb | 2590 | tot--; |
a687059c | 2591 | } |
8165faea | 2592 | PERL_ASYNC_CHECK(); |
a687059c | 2593 | break; |
b1248f16 | 2594 | #endif |
79072805 | 2595 | case OP_UNLINK: |
20408e3c | 2596 | APPLY_TAINT_PROPER(); |
79072805 LW |
2597 | tot = sp - mark; |
2598 | while (++mark <= sp) { | |
41188aa0 | 2599 | s = SvPV_const(*mark, len); |
20408e3c | 2600 | APPLY_TAINT_PROPER(); |
41188aa0 | 2601 | if (!IS_SAFE_PATHNAME(s, len, "unlink")) { |
c8028aa6 TC |
2602 | tot--; |
2603 | } | |
f0d85c30 | 2604 | else if (PL_unsafe) { |
b8ffc8df | 2605 | if (UNLINK(s)) |
5cdd1fc2 | 2606 | { |
a687059c | 2607 | tot--; |
5cdd1fc2 AB |
2608 | } |
2609 | #if defined(__amigaos4__) && defined(NEWLIB) | |
2610 | else | |
2611 | { | |
2612 | /* Under AmigaOS4 unlink only 'fails' if the | |
2613 | * filename is invalid. It may not remove the file | |
2614 | * if it's locked, so check if it's still around. */ | |
2615 | if ((access(s,F_OK) != -1)) | |
2616 | { | |
2617 | tot--; | |
2618 | } | |
2619 | } | |
2620 | #endif | |
a687059c LW |
2621 | } |
2622 | else { /* don't let root wipe out directories without -U */ | |
45a23732 DD |
2623 | Stat_t statbuf; |
2624 | if (PerlLIO_lstat(s, &statbuf) < 0) | |
1dcae8b8 | 2625 | tot--; |
45a23732 | 2626 | else if (S_ISDIR(statbuf.st_mode)) { |
cd52bc19 | 2627 | SETERRNO(EISDIR, SS_NOPRIV); |
45a23732 | 2628 | tot--; |
1dcae8b8 | 2629 | } |
a687059c | 2630 | else { |
b8ffc8df | 2631 | if (UNLINK(s)) |
5cdd1fc2 AB |
2632 | { |
2633 | tot--; | |
2634 | } | |
2635 | #if defined(__amigaos4__) && defined(NEWLIB) | |
2636 | else | |
2637 | { | |
2638 | /* Under AmigaOS4 unlink only 'fails' if the filename is invalid */ | |
2639 | /* It may not remove the file if it's Locked, so check if it's still */ | |
2640 | /* arround */ | |
2641 | if((access(s,F_OK) != -1)) | |
2642 | { | |
2643 | tot--; | |
2644 | } | |
2645 | } | |
2646 | #endif | |
a687059c LW |
2647 | } |
2648 | } | |
2649 | } | |
2650 | break; | |
e96b369d | 2651 | #if defined(HAS_UTIME) || defined(HAS_FUTIMES) |
79072805 | 2652 | case OP_UTIME: |
20408e3c | 2653 | APPLY_TAINT_PROPER(); |
79072805 | 2654 | if (sp - mark > 2) { |
e96b369d GA |
2655 | #if defined(HAS_FUTIMES) |
2656 | struct timeval utbuf[2]; | |
2657 | void *utbufp = utbuf; | |
2658 | #elif defined(I_UTIME) || defined(VMS) | |
663a0e37 | 2659 | struct utimbuf utbuf; |
07409e01 | 2660 | struct utimbuf *utbufp = &utbuf; |
663a0e37 | 2661 | #else |
a687059c | 2662 | struct { |
dd2821f6 GS |
2663 | Time_t actime; |
2664 | Time_t modtime; | |
a687059c | 2665 | } utbuf; |
07409e01 | 2666 | void *utbufp = &utbuf; |
663a0e37 | 2667 | #endif |
a687059c | 2668 | |
0bcc34c2 AL |
2669 | SV* const accessed = *++mark; |
2670 | SV* const modified = *++mark; | |
c6f7b413 | 2671 | |
6ec06612 SB |
2672 | /* Be like C, and if both times are undefined, let the C |
2673 | * library figure out what to do. This usually means | |
2674 | * "current time". */ | |
c6f7b413 RS |
2675 | |
2676 | if ( accessed == &PL_sv_undef && modified == &PL_sv_undef ) | |
6ec06612 SB |
2677 | utbufp = NULL; |
2678 | else { | |
2679 | Zero(&utbuf, sizeof utbuf, char); | |
e96b369d | 2680 | #ifdef HAS_FUTIMES |
4ea561bc | 2681 | utbuf[0].tv_sec = (long)SvIV(accessed); /* time accessed */ |
e96b369d | 2682 | utbuf[0].tv_usec = 0; |
4ea561bc | 2683 | utbuf[1].tv_sec = (long)SvIV(modified); /* time modified */ |
e96b369d GA |
2684 | utbuf[1].tv_usec = 0; |
2685 | #elif defined(BIG_TIME) | |
4ea561bc NC |
2686 | utbuf.actime = (Time_t)SvNV(accessed); /* time accessed */ |
2687 | utbuf.modtime = (Time_t)SvNV(modified); /* time modified */ | |
517844ec | 2688 | #else |
4ea561bc NC |
2689 | utbuf.actime = (Time_t)SvIV(accessed); /* time accessed */ |
2690 | utbuf.modtime = (Time_t)SvIV(modified); /* time modified */ | |
517844ec | 2691 | #endif |
6ec06612 | 2692 | } |
4373e329 | 2693 | APPLY_TAINT_PROPER(); |
79072805 LW |
2694 | tot = sp - mark; |
2695 | while (++mark <= sp) { | |
e96b369d | 2696 | GV* gv; |
64617da9 | 2697 | if ((gv = MAYBE_DEREF_GV(*mark))) { |
e96b369d GA |
2698 | if (GvIO(gv) && IoIFP(GvIOp(gv))) { |
2699 | #ifdef HAS_FUTIMES | |
375ed12a | 2700 | int fd = PerlIO_fileno(IoIFP(GvIOn(gv))); |
e96b369d | 2701 | APPLY_TAINT_PROPER(); |
375ed12a JH |
2702 | if (fd < 0) { |
2703 | SETERRNO(EBADF,RMS_IFI); | |
2704 | tot--; | |
2705 | } else if (futimes(fd, (struct timeval *) utbufp)) | |
e96b369d GA |
2706 | tot--; |
2707 | #else | |
2708 | Perl_die(aTHX_ PL_no_func, "futimes"); | |
2709 | #endif | |
2710 | } | |
2711 | else { | |
2712 | tot--; | |
2713 | } | |
2714 | } | |
e96b369d | 2715 | else { |
41188aa0 | 2716 | const char * const name = SvPV_nomg_const(*mark, len); |
e96b369d | 2717 | APPLY_TAINT_PROPER(); |
41188aa0 | 2718 | if (!IS_SAFE_PATHNAME(name, len, "utime")) { |
c8028aa6 TC |
2719 | tot--; |
2720 | } | |
2721 | else | |
e96b369d | 2722 | #ifdef HAS_FUTIMES |
8b7231d9 | 2723 | if (utimes(name, (struct timeval *)utbufp)) |
e96b369d GA |
2724 | #else |
2725 | if (PerlLIO_utime(name, utbufp)) | |
2726 | #endif | |
2727 | tot--; | |
2728 | } | |
2729 | ||
a687059c | 2730 | } |
a687059c LW |
2731 | } |
2732 | else | |
79072805 | 2733 | tot = 0; |
a687059c | 2734 | break; |
a0d0e21e | 2735 | #endif |
a687059c LW |
2736 | } |
2737 | return tot; | |
20408e3c | 2738 | |
20408e3c | 2739 | #undef APPLY_TAINT_PROPER |
a687059c LW |
2740 | } |
2741 | ||
bd93adf5 | 2742 | /* Do the permissions in *statbufp allow some operation? */ |
a0d0e21e | 2743 | #ifndef VMS /* VMS' cando is in vms.c */ |
7f4774ae | 2744 | bool |
5aaab254 | 2745 | Perl_cando(pTHX_ Mode_t mode, bool effective, const Stat_t *statbufp) |
ae1951c1 NC |
2746 | /* effective is a flag, true for EUID, or for checking if the effective gid |
2747 | * is in the list of groups returned from getgroups(). | |
2748 | */ | |
a687059c | 2749 | { |
7918f24d | 2750 | PERL_ARGS_ASSERT_CANDO; |
81611534 | 2751 | PERL_UNUSED_CONTEXT; |
7918f24d | 2752 | |
bee1dbe2 | 2753 | #ifdef DOSISH |
fe14fcc3 LW |
2754 | /* [Comments and code from Len Reed] |
2755 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write | |
2756 | * to write-protected files. The execute permission bit is set | |
486ec47a | 2757 | * by the Microsoft C library stat() function for the following: |
fe14fcc3 LW |
2758 | * .exe files |
2759 | * .com files | |
2760 | * .bat files | |
2761 | * directories | |
2762 | * All files and directories are readable. | |
2763 | * Directories and special files, e.g. "CON", cannot be | |
2764 | * write-protected. | |
2765 | * [Comment by Tom Dinger -- a directory can have the write-protect | |
2766 | * bit set in the file system, but DOS permits changes to | |
2767 | * the directory anyway. In addition, all bets are off | |
2768 | * here for networked software, such as Novell and | |
2769 | * Sun's PC-NFS.] | |
2770 | */ | |
2771 | ||
bee1dbe2 LW |
2772 | /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat |
2773 | * too so it will actually look into the files for magic numbers | |
2774 | */ | |
8298454c | 2775 | return cBOOL(mode & statbufp->st_mode); |
fe14fcc3 | 2776 | |
55497cff | 2777 | #else /* ! DOSISH */ |
b595cd4b RU |
2778 | # ifdef __CYGWIN__ |
2779 | if (ingroup(544,effective)) { /* member of Administrators */ | |
2780 | # else | |
985213f2 | 2781 | if ((effective ? PerlProc_geteuid() : PerlProc_getuid()) == 0) { /* root is special */ |
b595cd4b | 2782 | # endif |
7f4774ae | 2783 | if (mode == S_IXUSR) { |
c623bd54 | 2784 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) |
a687059c LW |
2785 | return TRUE; |
2786 | } | |
2787 | else | |
2788 | return TRUE; /* root reads and writes anything */ | |
2789 | return FALSE; | |
2790 | } | |
985213f2 | 2791 | if (statbufp->st_uid == (effective ? PerlProc_geteuid() : PerlProc_getuid()) ) { |
7f4774ae | 2792 | if (statbufp->st_mode & mode) |
a687059c LW |
2793 | return TRUE; /* ok as "user" */ |
2794 | } | |
d8eceb89 | 2795 | else if (ingroup(statbufp->st_gid,effective)) { |
7f4774ae | 2796 | if (statbufp->st_mode & mode >> 3) |
a687059c LW |
2797 | return TRUE; /* ok as "group" */ |
2798 | } | |
7f4774ae | 2799 | else if (statbufp->st_mode & mode >> 6) |
a687059c LW |
2800 | return TRUE; /* ok as "other" */ |
2801 | return FALSE; | |
55497cff | 2802 | #endif /* ! DOSISH */ |
a687059c | 2803 | } |
a0d0e21e | 2804 | #endif /* ! VMS */ |
a687059c | 2805 | |
1f676739 | 2806 | static bool |
0da8eb3a | 2807 | S_ingroup(pTHX_ Gid_t testgid, bool effective) |
a687059c | 2808 | { |
81611534 JH |
2809 | #ifndef PERL_IMPLICIT_SYS |
2810 | /* PERL_IMPLICIT_SYS like Win32: getegid() etc. require the context. */ | |
2811 | PERL_UNUSED_CONTEXT; | |
2812 | #endif | |
985213f2 | 2813 | if (testgid == (effective ? PerlProc_getegid() : PerlProc_getgid())) |
a687059c | 2814 | return TRUE; |
fe14fcc3 | 2815 | #ifdef HAS_GETGROUPS |
a687059c | 2816 | { |
331b57bc | 2817 | Groups_t *gary = NULL; |
79072805 | 2818 | I32 anum; |
331b57bc | 2819 | bool rc = FALSE; |
a687059c | 2820 | |
331b57bc | 2821 | anum = getgroups(0, gary); |
375ed12a JH |
2822 | if (anum > 0) { |
2823 | Newx(gary, anum, Groups_t); | |
2824 | anum = getgroups(anum, gary); | |
2825 | while (--anum >= 0) | |
2826 | if (gary[anum] == testgid) { | |
2827 | rc = TRUE; | |
2828 | break; | |
2829 | } | |
331b57bc | 2830 | |
375ed12a JH |
2831 | Safefree(gary); |
2832 | } | |
331b57bc | 2833 | return rc; |
a687059c | 2834 | } |
c685562b | 2835 | #else |
a687059c | 2836 | return FALSE; |
cd39f2b6 | 2837 | #endif |
a687059c | 2838 | } |
c2ab57d4 | 2839 | |
fe14fcc3 | 2840 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 | 2841 | |
79072805 | 2842 | I32 |
864dbfa3 | 2843 | Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp) |
c2ab57d4 | 2844 | { |
0bcc34c2 | 2845 | const key_t key = (key_t)SvNVx(*++mark); |
c3312966 | 2846 | SV *nsv = optype == OP_MSGGET ? NULL : *++mark; |
6867be6d | 2847 | const I32 flags = SvIVx(*++mark); |
294a48e9 | 2848 | |
7918f24d | 2849 | PERL_ARGS_ASSERT_DO_IPCGET; |
294a48e9 | 2850 | PERL_UNUSED_ARG(sp); |
c2ab57d4 | 2851 | |
748a9306 | 2852 | SETERRNO(0,0); |
c2ab57d4 LW |
2853 | switch (optype) |
2854 | { | |
fe14fcc3 | 2855 | #ifdef HAS_MSG |
79072805 | 2856 | case OP_MSGGET: |
c2ab57d4 | 2857 | return msgget(key, flags); |
e5d73d77 | 2858 | #endif |
fe14fcc3 | 2859 | #ifdef HAS_SEM |
79072805 | 2860 | case OP_SEMGET: |
c3312966 | 2861 | return semget(key, (int) SvIV(nsv), flags); |
e5d73d77 | 2862 | #endif |
fe14fcc3 | 2863 | #ifdef HAS_SHM |
79072805 | 2864 | case OP_SHMGET: |
c3312966 | 2865 | return shmget(key, (size_t) SvUV(nsv), flags); |
e5d73d77 | 2866 | #endif |
fe14fcc3 | 2867 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 2868 | default: |
fe13d51d | 2869 | /* diag_listed_as: msg%s not implemented */ |
cea2e8a9 | 2870 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
e5d73d77 | 2871 | #endif |
c2ab57d4 LW |
2872 | } |
2873 | return -1; /* should never happen */ | |
2874 | } | |
2875 | ||
79072805 | 2876 | I32 |
864dbfa3 | 2877 | Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp) |
c2ab57d4 | 2878 | { |
c2ab57d4 | 2879 | char *a; |
a0d0e21e | 2880 | I32 ret = -1; |
6867be6d | 2881 | const I32 id = SvIVx(*++mark); |
95b63a38 | 2882 | #ifdef Semctl |
6867be6d | 2883 | const I32 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0; |
95b63a38 | 2884 | #endif |
6867be6d | 2885 | const I32 cmd = SvIVx(*++mark); |
0bcc34c2 AL |
2886 | SV * const astr = *++mark; |
2887 | STRLEN infosize = 0; | |
2888 | I32 getinfo = (cmd == IPC_STAT); | |
c2ab57d4 | 2889 | |
7918f24d | 2890 | PERL_ARGS_ASSERT_DO_IPCCTL; |
0bcc34c2 | 2891 | PERL_UNUSED_ARG(sp); |
c2ab57d4 LW |
2892 | |
2893 | switch (optype) | |
2894 | { | |
fe14fcc3 | 2895 | #ifdef HAS_MSG |
79072805 | 2896 | case OP_MSGCTL: |
c2ab57d4 LW |
2897 | if (cmd == IPC_STAT || cmd == IPC_SET) |
2898 | infosize = sizeof(struct msqid_ds); | |
2899 | break; | |
e5d73d77 | 2900 | #endif |
fe14fcc3 | 2901 | #ifdef HAS_SHM |
79072805 | 2902 | case OP_SHMCTL: |
c2ab57d4 LW |
2903 | if (cmd == IPC_STAT || cmd == IPC_SET) |
2904 | infosize = sizeof(struct shmid_ds); | |
2905 | break; | |
e5d73d77 | 2906 | #endif |
fe14fcc3 | 2907 | #ifdef HAS_SEM |
79072805 | 2908 | case OP_SEMCTL: |
39398f3f | 2909 | #ifdef Semctl |
c2ab57d4 LW |
2910 | if (cmd == IPC_STAT || cmd == IPC_SET) |
2911 | infosize = sizeof(struct semid_ds); | |
2912 | else if (cmd == GETALL || cmd == SETALL) | |
2913 | { | |
8e591e46 | 2914 | struct semid_ds semds; |
bd89102f | 2915 | union semun semun; |
e6f0bdd6 GS |
2916 | #ifdef EXTRA_F_IN_SEMUN_BUF |
2917 | semun.buff = &semds; | |
2918 | #else | |
84902520 | 2919 | semun.buf = &semds; |
e6f0bdd6 | 2920 | #endif |
c2ab57d4 | 2921 | getinfo = (cmd == GETALL); |
9b89d93d GB |
2922 | if (Semctl(id, 0, IPC_STAT, semun) == -1) |
2923 | return -1; | |
6e21c824 LW |
2924 | infosize = semds.sem_nsems * sizeof(short); |
2925 | /* "short" is technically wrong but much more portable | |
2926 | than guessing about u_?short(_t)? */ | |
c2ab57d4 | 2927 | } |
39398f3f | 2928 | #else |
fe13d51d | 2929 | /* diag_listed_as: sem%s not implemented */ |
cea2e8a9 | 2930 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
39398f3f | 2931 | #endif |
c2ab57d4 | 2932 | break; |
e5d73d77 | 2933 | #endif |
fe14fcc3 | 2934 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 2935 | default: |
fe13d51d | 2936 | /* diag_listed_as: shm%s not implemented */ |
cea2e8a9 | 2937 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
e5d73d77 | 2938 | #endif |
c2ab57d4 LW |
2939 | } |
2940 | ||
2941 | if (infosize) | |
2942 | { | |
2943 | if (getinfo) | |
2944 | { | |
93524f2b | 2945 | SvPV_force_nolen(astr); |
a0d0e21e | 2946 | a = SvGROW(astr, infosize+1); |
c2ab57d4 LW |
2947 | } |
2948 | else | |
2949 | { | |
93524f2b | 2950 | STRLEN len; |
463ee0b2 LW |
2951 | a = SvPV(astr, len); |
2952 | if (len != infosize) | |
cea2e8a9 | 2953 | Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld", |
4ec43091 JH |
2954 | PL_op_desc[optype], |
2955 | (unsigned long)len, | |
2956 | (long)infosize); | |
c2ab57d4 LW |
2957 | } |
2958 | } | |
2959 | else | |
2960 | { | |
0bcc34c2 | 2961 | const IV i = SvIV(astr); |
56431972 | 2962 | a = INT2PTR(char *,i); /* ouch */ |
c2ab57d4 | 2963 | } |
748a9306 | 2964 | SETERRNO(0,0); |
c2ab57d4 LW |
2965 | switch (optype) |
2966 | { | |
fe14fcc3 | 2967 | #ifdef HAS_MSG |
79072805 | 2968 | case OP_MSGCTL: |
bee1dbe2 | 2969 | ret = msgctl(id, cmd, (struct msqid_ds *)a); |
c2ab57d4 | 2970 | break; |
e5d73d77 | 2971 | #endif |
fe14fcc3 | 2972 | #ifdef HAS_SEM |
bd89102f | 2973 | case OP_SEMCTL: { |
39398f3f | 2974 | #ifdef Semctl |
bd89102f AD |
2975 | union semun unsemds; |
2976 | ||
64d76282 BC |
2977 | if(cmd == SETVAL) { |
2978 | unsemds.val = PTR2nat(a); | |
2979 | } | |
2980 | else { | |
e6f0bdd6 | 2981 | #ifdef EXTRA_F_IN_SEMUN_BUF |
64d76282 | 2982 | unsemds.buff = (struct semid_ds *)a; |
e6f0bdd6 | 2983 | #else |
64d76282 | 2984 | unsemds.buf = (struct semid_ds *)a; |
e6f0bdd6 | 2985 | #endif |
64d76282 | 2986 | } |
bd89102f | 2987 | ret = Semctl(id, n, cmd, unsemds); |
39398f3f | 2988 | #else |
fe13d51d | 2989 | /* diag_listed_as: sem%s not implemented */ |
cea2e8a9 | 2990 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
39398f3f | 2991 | #endif |
bd89102f | 2992 | } |
c2ab57d4 | 2993 | break; |
e5d73d77 | 2994 | #endif |
fe14fcc3 | 2995 | #ifdef HAS_SHM |
79072805 | 2996 | case OP_SHMCTL: |
bee1dbe2 | 2997 | ret = shmctl(id, cmd, (struct shmid_ds *)a); |
c2ab57d4 | 2998 | break; |
e5d73d77 | 2999 | #endif |
c2ab57d4 LW |
3000 | } |
3001 | if (getinfo && ret >= 0) { | |
79072805 LW |
3002 | SvCUR_set(astr, infosize); |
3003 | *SvEND(astr) = '\0'; | |
a0d0e21e | 3004 | SvSETMAGIC(astr); |
c2ab57d4 LW |
3005 | } |
3006 | return ret; | |
3007 | } | |
3008 | ||
79072805 | 3009 | I32 |
864dbfa3 | 3010 | Perl_do_msgsnd(pTHX_ SV **mark, SV **sp) |
c2ab57d4 | 3011 | { |
fe14fcc3 | 3012 | #ifdef HAS_MSG |
463ee0b2 | 3013 | STRLEN len; |
6867be6d | 3014 | const I32 id = SvIVx(*++mark); |
0bcc34c2 AL |
3015 | SV * const mstr = *++mark; |
3016 | const I32 flags = SvIVx(*++mark); | |
3017 | const char * const mbuf = SvPV_const(mstr, len); | |
3018 | const I32 msize = len - sizeof(long); | |
3019 | ||
7918f24d | 3020 | PERL_ARGS_ASSERT_DO_MSGSND; |
890ce7af | 3021 | PERL_UNUSED_ARG(sp); |
c2ab57d4 | 3022 | |
0bcc34c2 | 3023 | if (msize < 0) |
cea2e8a9 | 3024 | Perl_croak(aTHX_ "Arg too short for msgsnd"); |
748a9306 | 3025 | SETERRNO(0,0); |
681fb693 JH |
3026 | if (id >= 0 && flags >= 0) { |
3027 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); | |
3028 | } else { | |
3029 | SETERRNO(EINVAL,LIB_INVARG); | |
3030 | return -1; | |
3031 | } | |
e5d73d77 | 3032 | #else |
2d51fa4d RGS |
3033 | PERL_UNUSED_ARG(sp); |
3034 | PERL_UNUSED_ARG(mark); | |
fe13d51d | 3035 | /* diag_listed_as: msg%s not implemented */ |
cea2e8a9 | 3036 | Perl_croak(aTHX_ "msgsnd not implemented"); |
7c522378 | 3037 | return -1; |
e5d73d77 | 3038 | #endif |
c2ab57d4 LW |
3039 | } |
3040 | ||
79072805 | 3041 | I32 |
864dbfa3 | 3042 | Perl_do_msgrcv(pTHX_ SV **mark, SV **sp) |
c2ab57d4 | 3043 | { |
fe14fcc3 | 3044 | #ifdef HAS_MSG |
c2ab57d4 LW |
3045 | char *mbuf; |
3046 | long mtype; | |
6867be6d | 3047 | I32 msize, flags, ret; |
6867be6d | 3048 | const I32 id = SvIVx(*++mark); |
0bcc34c2 | 3049 | SV * const mstr = *++mark; |
7918f24d NC |
3050 | |
3051 | PERL_ARGS_ASSERT_DO_MSGRCV; | |
890ce7af | 3052 | PERL_UNUSED_ARG(sp); |
79072805 | 3053 | |
c2e66d9e GS |
3054 | /* suppress warning when reading into undef var --jhi */ |
3055 | if (! SvOK(mstr)) | |
8062ff11 | 3056 | SvPVCLEAR(mstr); |
463ee0b2 LW |
3057 | msize = SvIVx(*++mark); |
3058 | mtype = (long)SvIVx(*++mark); | |
3059 | flags = SvIVx(*++mark); | |
93524f2b | 3060 | SvPV_force_nolen(mstr); |
a0d0e21e | 3061 | mbuf = SvGROW(mstr, sizeof(long)+msize+1); |
a1d180c4 | 3062 | |
748a9306 | 3063 | SETERRNO(0,0); |
d2607e1e JH |
3064 | if (id >= 0 && msize >= 0 && flags >= 0) { |
3065 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); | |
3066 | } else { | |
3067 | SETERRNO(EINVAL,LIB_INVARG); | |
3068 | ret = -1; | |
3069 | } | |
c2ab57d4 | 3070 | if (ret >= 0) { |
79072805 LW |
3071 | SvCUR_set(mstr, sizeof(long)+ret); |
3072 | *SvEND(mstr) = '\0'; | |
41d6edb2 JH |
3073 | /* who knows who has been playing with this message? */ |
3074 | SvTAINTED_on(mstr); | |
c2ab57d4 LW |
3075 | } |
3076 | return ret; | |
e5d73d77 | 3077 | #else |
2d51fa4d RGS |
3078 | PERL_UNUSED_ARG(sp); |
3079 | PERL_UNUSED_ARG(mark); | |
fe13d51d | 3080 | /* diag_listed_as: msg%s not implemented */ |
cea2e8a9 | 3081 | Perl_croak(aTHX_ "msgrcv not implemented"); |
7c522378 | 3082 | return -1; |
e5d73d77 | 3083 | #endif |
c2ab57d4 LW |
3084 | } |
3085 | ||
79072805 | 3086 | I32 |
864dbfa3 | 3087 | Perl_do_semop(pTHX_ SV **mark, SV **sp) |
c2ab57d4 | 3088 | { |
fe14fcc3 | 3089 | #ifdef HAS_SEM |
463ee0b2 | 3090 | STRLEN opsize; |
6867be6d | 3091 | const I32 id = SvIVx(*++mark); |
0bcc34c2 AL |
3092 | SV * const opstr = *++mark; |
3093 | const char * const opbuf = SvPV_const(opstr, opsize); | |
7918f24d NC |
3094 | |
3095 | PERL_ARGS_ASSERT_DO_SEMOP; | |
890ce7af | 3096 | PERL_UNUSED_ARG(sp); |
c2ab57d4 | 3097 | |
248ff010 NC |
3098 | if (opsize < 3 * SHORTSIZE |
3099 | || (opsize % (3 * SHORTSIZE))) { | |
93189314 | 3100 | SETERRNO(EINVAL,LIB_INVARG); |
c2ab57d4 LW |
3101 | return -1; |
3102 | } | |
748a9306 | 3103 | SETERRNO(0,0); |
248ff010 NC |
3104 | /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */ |
3105 | { | |
6867be6d | 3106 | const int nsops = opsize / (3 * sizeof (short)); |
248ff010 | 3107 | int i = nsops; |
0bcc34c2 | 3108 | short * const ops = (short *) opbuf; |
248ff010 NC |
3109 | short *o = ops; |
3110 | struct sembuf *temps, *t; | |
3111 | I32 result; | |
3112 | ||
a02a5408 | 3113 | Newx (temps, nsops, struct sembuf); |
248ff010 NC |
3114 | t = temps; |
3115 | while (i--) { | |
3116 | t->sem_num = *o++; | |
3117 | t->sem_op = *o++; | |
3118 | t->sem_flg = *o++; | |
3119 | t++; | |
3120 | } | |
3121 | result = semop(id, temps, nsops); | |
248ff010 NC |
3122 | Safefree(temps); |
3123 | return result; | |
3124 | } | |
e5d73d77 | 3125 | #else |
fe13d51d | 3126 | /* diag_listed_as: sem%s not implemented */ |
cea2e8a9 | 3127 | Perl_croak(aTHX_ "semop not implemented"); |
e5d73d77 | 3128 | #endif |
c2ab57d4 LW |
3129 | } |
3130 | ||
79072805 | 3131 | I32 |
864dbfa3 | 3132 | Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp) |
c2ab57d4 | 3133 | { |
fe14fcc3 | 3134 | #ifdef HAS_SHM |
4373e329 | 3135 | char *shm; |
c2ab57d4 | 3136 | struct shmid_ds shmds; |
6867be6d | 3137 | const I32 id = SvIVx(*++mark); |
0bcc34c2 AL |
3138 | SV * const mstr = *++mark; |
3139 | const I32 mpos = SvIVx(*++mark); | |
3140 | const I32 msize = SvIVx(*++mark); | |
7918f24d NC |
3141 | |
3142 | PERL_ARGS_ASSERT_DO_SHMIO; | |
890ce7af | 3143 | PERL_UNUSED_ARG(sp); |
c2ab57d4 | 3144 | |
748a9306 | 3145 | SETERRNO(0,0); |
c2ab57d4 LW |
3146 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
3147 | return -1; | |
7f39519f NC |
3148 | if (mpos < 0 || msize < 0 |
3149 | || (size_t)mpos + msize > (size_t)shmds.shm_segsz) { | |
93189314 | 3150 | SETERRNO(EFAULT,SS_ACCVIO); /* can't do as caller requested */ |
c2ab57d4 LW |
3151 | return -1; |
3152 | } | |
568fc267 JH |
3153 | if (id >= 0) { |
3154 | shm = (char *)shmat(id, NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0); | |
3155 | } else { | |
3156 | SETERRNO(EINVAL,LIB_INVARG); | |
3157 | return -1; | |
3158 | } | |
c2ab57d4 LW |
3159 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
3160 | return -1; | |
79072805 | 3161 | if (optype == OP_SHMREAD) { |
c8ae91a8 | 3162 | char *mbuf; |
9f538c04 | 3163 | /* suppress warning when reading into undef var (tchrist 3/Mar/00) */ |
b399897d CS |
3164 | SvGETMAGIC(mstr); |
3165 | SvUPGRADE(mstr, SVt_PV); | |
9f538c04 | 3166 | if (! SvOK(mstr)) |
8062ff11 | 3167 | SvPVCLEAR(mstr); |
af8ff727 | 3168 | SvPOK_only(mstr); |
bb7a0f54 | 3169 | mbuf = SvGROW(mstr, (STRLEN)msize+1); |
a0d0e21e | 3170 | |
bee1dbe2 | 3171 | Copy(shm + mpos, mbuf, msize, char); |
79072805 LW |
3172 | SvCUR_set(mstr, msize); |
3173 | *SvEND(mstr) = '\0'; | |
a0d0e21e | 3174 | SvSETMAGIC(mstr); |
d929ce6f JH |
3175 | /* who knows who has been playing with this shared memory? */ |
3176 | SvTAINTED_on(mstr); | |
c2ab57d4 LW |
3177 | } |
3178 | else { | |
93524f2b | 3179 | STRLEN len; |
c2ab57d4 | 3180 | |
93524f2b | 3181 | const char *mbuf = SvPV_const(mstr, len); |
027aa12d | 3182 | const I32 n = ((I32)len > msize) ? msize : (I32)len; |
bee1dbe2 | 3183 | Copy(mbuf, shm + mpos, n, char); |
c2ab57d4 | 3184 | if (n < msize) |
bee1dbe2 | 3185 | memzero(shm + mpos + n, msize - n); |
c2ab57d4 LW |
3186 | } |
3187 | return shmdt(shm); | |
e5d73d77 | 3188 | #else |
fe13d51d | 3189 | /* diag_listed_as: shm%s not implemented */ |
cea2e8a9 | 3190 | Perl_croak(aTHX_ "shm I/O not implemented"); |
7c522378 | 3191 | return -1; |
e5d73d77 | 3192 | #endif |
c2ab57d4 LW |
3193 | } |
3194 | ||
fe14fcc3 | 3195 | #endif /* SYSV IPC */ |
4e35701f | 3196 | |
0d44d22b | 3197 | /* |
ccfc67b7 JH |
3198 | =head1 IO Functions |
3199 | ||
0d44d22b NC |
3200 | =for apidoc start_glob |
3201 | ||
3202 | Function called by C<do_readline> to spawn a glob (or do the glob inside | |
154e47c8 | 3203 | perl on VMS). This code used to be inline, but now perl uses C<File::Glob> |
25047fde KW |
3204 | this glob starter is only used by miniperl during the build process, |
3205 | or when PERL_EXTERNAL_GLOB is defined. | |
75af9d73 | 3206 | Moving it away shrinks F<pp_hot.c>; shrinking F<pp_hot.c> helps speed perl up. |
fab3f3a7 | 3207 | |
0d44d22b NC |
3208 | =cut |
3209 | */ | |
3210 | ||
3211 | PerlIO * | |
3212 | Perl_start_glob (pTHX_ SV *tmpglob, IO *io) | |
3213 | { | |
561b68a9 | 3214 | SV * const tmpcmd = newSV(0); |
0d44d22b | 3215 | PerlIO *fp; |
41188aa0 TC |
3216 | STRLEN len; |
3217 | const char *s = SvPV(tmpglob, len); | |
7918f24d NC |
3218 | |
3219 | PERL_ARGS_ASSERT_START_GLOB; | |
3220 | ||
41188aa0 | 3221 | if (!IS_SAFE_SYSCALL(s, len, "pattern", "glob")) |
c8028aa6 TC |
3222 | return NULL; |
3223 | ||
0d44d22b NC |
3224 | ENTER; |
3225 | SAVEFREESV(tmpcmd); | |
3226 | #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */ | |
3227 | /* since spawning off a process is a real performance hit */ | |
dca5a913 | 3228 | |
1cc9774b CB |
3229 | PerlIO * |
3230 | Perl_vms_start_glob | |
3231 | (pTHX_ SV *tmpglob, | |
3232 | IO *io); | |
3233 | ||
49a7a762 | 3234 | fp = Perl_vms_start_glob(aTHX_ tmpglob, io); |
dca5a913 | 3235 | |
0d44d22b | 3236 | #else /* !VMS */ |
4009c3ff AC |
3237 | # ifdef DOSISH |
3238 | # if defined(OS2) | |
0d44d22b NC |
3239 | sv_setpv(tmpcmd, "for a in "); |
3240 | sv_catsv(tmpcmd, tmpglob); | |
3241 | sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |"); | |
4009c3ff | 3242 | # elif defined(DJGPP) |
0d44d22b NC |
3243 | sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */ |
3244 | sv_catsv(tmpcmd, tmpglob); | |
4009c3ff | 3245 | # else |
0d44d22b NC |
3246 | sv_setpv(tmpcmd, "perlglob "); |
3247 | sv_catsv(tmpcmd, tmpglob); | |
3248 | sv_catpv(tmpcmd, " |"); | |
4009c3ff AC |
3249 | # endif |
3250 | # elif defined(CSH) | |
0d44d22b NC |
3251 | sv_setpvn(tmpcmd, PL_cshname, PL_cshlen); |
3252 | sv_catpv(tmpcmd, " -cf 'set nonomatch; glob "); | |
3253 | sv_catsv(tmpcmd, tmpglob); | |
3254 | sv_catpv(tmpcmd, "' 2>/dev/null |"); | |
4009c3ff | 3255 | # else |
0d44d22b NC |
3256 | sv_setpv(tmpcmd, "echo "); |
3257 | sv_catsv(tmpcmd, tmpglob); | |
0d44d22b | 3258 | sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|"); |
4009c3ff | 3259 | # endif /* !DOSISH && !CSH */ |
93b2dae1 | 3260 | { |
acffc8af FC |
3261 | SV ** const svp = hv_fetchs(GvHVn(PL_envgv), "LS_COLORS", 0); |
3262 | if (svp && *svp) | |
3263 | save_helem_flags(GvHV(PL_envgv), | |
3264 | newSVpvs_flags("LS_COLORS", SVs_TEMP), svp, | |
3265 | SAVEf_SETMAGIC); | |
93b2dae1 | 3266 | } |
d5eb9a46 NC |
3267 | (void)do_open6(PL_last_in_gv, SvPVX_const(tmpcmd), SvCUR(tmpcmd), |
3268 | NULL, NULL, 0); | |
0d44d22b NC |
3269 | fp = IoIFP(io); |
3270 | #endif /* !VMS */ | |
3271 | LEAVE; | |
de7dabb6 TC |
3272 | |
3273 | if (!fp && ckWARN(WARN_GLOB)) { | |
3274 | Perl_warner(aTHX_ packWARN(WARN_GLOB), "glob failed (can't start child: %s)", | |
3275 | Strerror(errno)); | |
3276 | } | |
3277 | ||
0d44d22b NC |
3278 | return fp; |
3279 | } | |
66610fdd RGS |
3280 | |
3281 | /* | |
14d04a33 | 3282 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3283 | */ |