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) | |
999d65ed DM |
115 | enum { CLOEXEC_EXPERIMENT = 0, CLOEXEC_AT_OPEN, CLOEXEC_AFTER_OPEN }; |
116 | # define DO_GENOPEN_EXPERIMENTING_CLOEXEC(strategy, TESTFD, GENOPEN_CLOEXEC, \ | |
74df577f | 117 | GENOPEN_NORMAL, GENSETFD_CLOEXEC) \ |
f9821aff | 118 | do { \ |
f9821aff Z |
119 | switch (strategy) { \ |
120 | case CLOEXEC_EXPERIMENT: default: { \ | |
121 | int res = (GENOPEN_CLOEXEC), eno; \ | |
122 | if (LIKELY(res != -1)) { \ | |
123 | int fdflags = fcntl((TESTFD), F_GETFD); \ | |
124 | if (LIKELY(fdflags != -1) && \ | |
125 | LIKELY(fdflags & FD_CLOEXEC)) { \ | |
126 | strategy = CLOEXEC_AT_OPEN; \ | |
127 | } else { \ | |
128 | strategy = CLOEXEC_AFTER_OPEN; \ | |
74df577f | 129 | GENSETFD_CLOEXEC; \ |
f9821aff Z |
130 | } \ |
131 | } else if (UNLIKELY((eno = errno) == EINVAL || \ | |
132 | eno == ENOSYS)) { \ | |
133 | res = (GENOPEN_NORMAL); \ | |
134 | if (LIKELY(res != -1)) { \ | |
135 | strategy = CLOEXEC_AFTER_OPEN; \ | |
74df577f | 136 | GENSETFD_CLOEXEC; \ |
f9821aff Z |
137 | } else if (!LIKELY((eno = errno) == EINVAL || \ |
138 | eno == ENOSYS)) { \ | |
139 | strategy = CLOEXEC_AFTER_OPEN; \ | |
140 | } \ | |
141 | } \ | |
142 | return res; \ | |
143 | } \ | |
144 | case CLOEXEC_AT_OPEN: \ | |
145 | return (GENOPEN_CLOEXEC); \ | |
146 | case CLOEXEC_AFTER_OPEN: \ | |
74df577f | 147 | DO_GENOPEN_THEN_CLOEXEC(GENOPEN_NORMAL, GENSETFD_CLOEXEC); \ |
f9821aff Z |
148 | } \ |
149 | } while(0) | |
150 | #else | |
999d65ed | 151 | # define DO_GENOPEN_EXPERIMENTING_CLOEXEC(strategy, TESTFD, GENOPEN_CLOEXEC, \ |
74df577f Z |
152 | GENOPEN_NORMAL, GENSETFD_CLOEXEC) \ |
153 | DO_GENOPEN_THEN_CLOEXEC(GENOPEN_NORMAL, GENSETFD_CLOEXEC) | |
f9821aff Z |
154 | #endif |
155 | ||
156 | #define DO_ONEOPEN_THEN_CLOEXEC(ONEOPEN_NORMAL) \ | |
157 | do { \ | |
158 | int fd; \ | |
159 | DO_GENOPEN_THEN_CLOEXEC(fd = (ONEOPEN_NORMAL), \ | |
74df577f | 160 | setfd_cloexec(fd)); \ |
f9821aff | 161 | } while(0) |
999d65ed DM |
162 | #define DO_ONEOPEN_EXPERIMENTING_CLOEXEC(strategy, \ |
163 | ONEOPEN_CLOEXEC, ONEOPEN_NORMAL) \ | |
f9821aff Z |
164 | do { \ |
165 | int fd; \ | |
999d65ed DM |
166 | DO_GENOPEN_EXPERIMENTING_CLOEXEC(strategy, \ |
167 | fd, \ | |
168 | fd = (ONEOPEN_CLOEXEC), \ | |
74df577f | 169 | fd = (ONEOPEN_NORMAL), setfd_cloexec(fd)); \ |
f9821aff Z |
170 | } while(0) |
171 | ||
74df577f | 172 | #define DO_PIPESETFD_CLOEXEC(PIPEFD) \ |
f9821aff | 173 | do { \ |
74df577f Z |
174 | setfd_cloexec((PIPEFD)[0]); \ |
175 | setfd_cloexec((PIPEFD)[1]); \ | |
f9821aff Z |
176 | } while(0) |
177 | #define DO_PIPEOPEN_THEN_CLOEXEC(PIPEFD, PIPEOPEN_NORMAL) \ | |
74df577f | 178 | DO_GENOPEN_THEN_CLOEXEC(PIPEOPEN_NORMAL, DO_PIPESETFD_CLOEXEC(PIPEFD)) |
999d65ed | 179 | #define DO_PIPEOPEN_EXPERIMENTING_CLOEXEC(strategy, PIPEFD, PIPEOPEN_CLOEXEC, \ |
f9821aff | 180 | PIPEOPEN_NORMAL) \ |
999d65ed DM |
181 | DO_GENOPEN_EXPERIMENTING_CLOEXEC(strategy, \ |
182 | (PIPEFD)[0], PIPEOPEN_CLOEXEC, \ | |
74df577f | 183 | PIPEOPEN_NORMAL, DO_PIPESETFD_CLOEXEC(PIPEFD)) |
f9821aff Z |
184 | |
185 | int | |
186 | Perl_PerlLIO_dup_cloexec(pTHX_ int oldfd) | |
187 | { | |
188 | #if !defined(PERL_IMPLICIT_SYS) && defined(F_DUPFD_CLOEXEC) | |
189 | /* | |
190 | * struct IPerlLIO doesn't cover fcntl(), and there's no clear way | |
191 | * to extend it, so for the time being this just isn't available on | |
192 | * PERL_IMPLICIT_SYS builds. | |
193 | */ | |
194 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
999d65ed | 195 | PL_strategy_dup, |
f9821aff Z |
196 | fcntl(oldfd, F_DUPFD_CLOEXEC, 0), |
197 | PerlLIO_dup(oldfd)); | |
198 | #else | |
199 | DO_ONEOPEN_THEN_CLOEXEC(PerlLIO_dup(oldfd)); | |
200 | #endif | |
201 | } | |
202 | ||
203 | int | |
204 | Perl_PerlLIO_dup2_cloexec(pTHX_ int oldfd, int newfd) | |
205 | { | |
206 | #if !defined(PERL_IMPLICIT_SYS) && defined(HAS_DUP3) && defined(O_CLOEXEC) | |
207 | /* | |
208 | * struct IPerlLIO doesn't cover dup3(), and there's no clear way | |
209 | * to extend it, so for the time being this just isn't available on | |
210 | * PERL_IMPLICIT_SYS builds. | |
211 | */ | |
212 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
999d65ed | 213 | PL_strategy_dup2, |
f9821aff Z |
214 | dup3(oldfd, newfd, O_CLOEXEC), |
215 | PerlLIO_dup2(oldfd, newfd)); | |
216 | #else | |
217 | DO_ONEOPEN_THEN_CLOEXEC(PerlLIO_dup2(oldfd, newfd)); | |
218 | #endif | |
219 | } | |
220 | ||
221 | int | |
222 | Perl_PerlLIO_open_cloexec(pTHX_ const char *file, int flag) | |
223 | { | |
224 | PERL_ARGS_ASSERT_PERLLIO_OPEN_CLOEXEC; | |
225 | #if defined(O_CLOEXEC) | |
226 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
999d65ed | 227 | PL_strategy_open, |
f9821aff Z |
228 | PerlLIO_open(file, flag | O_CLOEXEC), |
229 | PerlLIO_open(file, flag)); | |
230 | #else | |
231 | DO_ONEOPEN_THEN_CLOEXEC(PerlLIO_open(file, flag)); | |
232 | #endif | |
233 | } | |
234 | ||
235 | int | |
236 | Perl_PerlLIO_open3_cloexec(pTHX_ const char *file, int flag, int perm) | |
237 | { | |
238 | PERL_ARGS_ASSERT_PERLLIO_OPEN3_CLOEXEC; | |
239 | #if defined(O_CLOEXEC) | |
240 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
999d65ed | 241 | PL_strategy_open3, |
f9821aff Z |
242 | PerlLIO_open3(file, flag | O_CLOEXEC, perm), |
243 | PerlLIO_open3(file, flag, perm)); | |
244 | #else | |
245 | DO_ONEOPEN_THEN_CLOEXEC(PerlLIO_open3(file, flag, perm)); | |
246 | #endif | |
247 | } | |
248 | ||
1cdb2692 Z |
249 | int |
250 | Perl_my_mkstemp_cloexec(char *templte) | |
251 | { | |
252 | PERL_ARGS_ASSERT_MY_MKSTEMP_CLOEXEC; | |
253 | #if defined(O_CLOEXEC) | |
254 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
999d65ed | 255 | PL_strategy_mkstemp, |
1cdb2692 Z |
256 | Perl_my_mkostemp(templte, O_CLOEXEC), |
257 | Perl_my_mkstemp(templte)); | |
258 | #else | |
259 | DO_ONEOPEN_THEN_CLOEXEC(Perl_my_mkstemp(templte)); | |
260 | #endif | |
261 | } | |
262 | ||
ae73d7ec TC |
263 | int |
264 | Perl_my_mkostemp_cloexec(char *templte, int flags) | |
265 | { | |
ae73d7ec TC |
266 | PERL_ARGS_ASSERT_MY_MKOSTEMP_CLOEXEC; |
267 | #if defined(O_CLOEXEC) | |
268 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
269 | PL_strategy_mkstemp, | |
270 | Perl_my_mkostemp(templte, flags | O_CLOEXEC), | |
271 | Perl_my_mkostemp(templte, flags)); | |
272 | #else | |
273 | DO_ONEOPEN_THEN_CLOEXEC(Perl_my_mkostemp(templte, flags)); | |
274 | #endif | |
275 | } | |
276 | ||
f9821aff Z |
277 | #ifdef HAS_PIPE |
278 | int | |
279 | Perl_PerlProc_pipe_cloexec(pTHX_ int *pipefd) | |
280 | { | |
281 | PERL_ARGS_ASSERT_PERLPROC_PIPE_CLOEXEC; | |
282 | /* | |
283 | * struct IPerlProc doesn't cover pipe2(), and there's no clear way | |
284 | * to extend it, so for the time being this just isn't available on | |
285 | * PERL_IMPLICIT_SYS builds. | |
286 | */ | |
287 | # if !defined(PERL_IMPLICIT_SYS) && defined(HAS_PIPE2) && defined(O_CLOEXEC) | |
999d65ed | 288 | DO_PIPEOPEN_EXPERIMENTING_CLOEXEC(PL_strategy_pipe, pipefd, |
f9821aff Z |
289 | pipe2(pipefd, O_CLOEXEC), |
290 | PerlProc_pipe(pipefd)); | |
291 | # else | |
292 | DO_PIPEOPEN_THEN_CLOEXEC(pipefd, PerlProc_pipe(pipefd)); | |
293 | # endif | |
294 | } | |
295 | #endif | |
296 | ||
297 | #ifdef HAS_SOCKET | |
298 | ||
299 | int | |
300 | Perl_PerlSock_socket_cloexec(pTHX_ int domain, int type, int protocol) | |
301 | { | |
302 | # if defined(SOCK_CLOEXEC) | |
303 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
999d65ed | 304 | PL_strategy_socket, |
f9821aff Z |
305 | PerlSock_socket(domain, type | SOCK_CLOEXEC, protocol), |
306 | PerlSock_socket(domain, type, protocol)); | |
307 | # else | |
308 | DO_ONEOPEN_THEN_CLOEXEC(PerlSock_socket(domain, type, protocol)); | |
309 | # endif | |
310 | } | |
311 | ||
312 | int | |
313 | Perl_PerlSock_accept_cloexec(pTHX_ int listenfd, struct sockaddr *addr, | |
314 | Sock_size_t *addrlen) | |
315 | { | |
316 | # if !defined(PERL_IMPLICIT_SYS) && \ | |
317 | defined(HAS_ACCEPT4) && defined(SOCK_CLOEXEC) | |
318 | /* | |
319 | * struct IPerlSock doesn't cover accept4(), and there's no clear | |
320 | * way to extend it, so for the time being this just isn't available | |
321 | * on PERL_IMPLICIT_SYS builds. | |
322 | */ | |
323 | DO_ONEOPEN_EXPERIMENTING_CLOEXEC( | |
999d65ed | 324 | PL_strategy_accept, |
f9821aff Z |
325 | accept4(listenfd, addr, addrlen, SOCK_CLOEXEC), |
326 | PerlSock_accept(listenfd, addr, addrlen)); | |
327 | # else | |
328 | DO_ONEOPEN_THEN_CLOEXEC(PerlSock_accept(listenfd, addr, addrlen)); | |
329 | # endif | |
330 | } | |
331 | ||
332 | #endif | |
333 | ||
334 | #if defined (HAS_SOCKETPAIR) || \ | |
335 | (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && \ | |
336 | defined(AF_INET) && defined(PF_INET)) | |
337 | int | |
338 | Perl_PerlSock_socketpair_cloexec(pTHX_ int domain, int type, int protocol, | |
339 | int *pairfd) | |
340 | { | |
341 | PERL_ARGS_ASSERT_PERLSOCK_SOCKETPAIR_CLOEXEC; | |
342 | # ifdef SOCK_CLOEXEC | |
999d65ed | 343 | DO_PIPEOPEN_EXPERIMENTING_CLOEXEC(PL_strategy_socketpair, pairfd, |
f9821aff Z |
344 | PerlSock_socketpair(domain, type | SOCK_CLOEXEC, protocol, pairfd), |
345 | PerlSock_socketpair(domain, type, protocol, pairfd)); | |
346 | # else | |
347 | DO_PIPEOPEN_THEN_CLOEXEC(pairfd, | |
348 | PerlSock_socketpair(domain, type, protocol, pairfd)); | |
349 | # endif | |
350 | } | |
351 | #endif | |
352 | ||
a2b41d5c NC |
353 | static IO * |
354 | S_openn_setup(pTHX_ GV *gv, char *mode, PerlIO **saveifp, PerlIO **saveofp, | |
355 | int *savefd, char *savetype) | |
a567e93b | 356 | { |
eb578fdb | 357 | IO * const io = GvIOn(gv); |
a687059c | 358 | |
a2b41d5c NC |
359 | PERL_ARGS_ASSERT_OPENN_SETUP; |
360 | ||
361 | *saveifp = NULL; | |
362 | *saveofp = NULL; | |
363 | *savefd = -1; | |
364 | *savetype = IoTYPE_CLOSED; | |
7918f24d | 365 | |
b931b1d9 | 366 | Zero(mode,sizeof(mode),char); |
3280af22 | 367 | PL_forkprocess = 1; /* assume true if no fork */ |
c07a80fd | 368 | |
b931b1d9 | 369 | /* If currently open - close before we re-open */ |
a0d0e21e | 370 | if (IoIFP(io)) { |
ee518936 NIS |
371 | if (IoTYPE(io) == IoTYPE_STD) { |
372 | /* This is a clone of one of STD* handles */ | |
ee518936 | 373 | } |
26297fe9 NC |
374 | else { |
375 | const int old_fd = PerlIO_fileno(IoIFP(io)); | |
376 | ||
25faa0d3 | 377 | if (inRANGE(old_fd, 0, PL_maxsysfd)) { |
26297fe9 | 378 | /* This is one of the original STD* handles */ |
a2b41d5c NC |
379 | *saveifp = IoIFP(io); |
380 | *saveofp = IoOFP(io); | |
381 | *savetype = IoTYPE(io); | |
382 | *savefd = old_fd; | |
26297fe9 NC |
383 | } |
384 | else { | |
385 | int result; | |
386 | ||
387 | if (IoTYPE(io) == IoTYPE_PIPE) | |
388 | result = PerlProc_pclose(IoIFP(io)); | |
389 | else if (IoIFP(io) != IoOFP(io)) { | |
390 | if (IoOFP(io)) { | |
391 | result = PerlIO_close(IoOFP(io)); | |
392 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ | |
393 | } | |
394 | else | |
395 | result = PerlIO_close(IoIFP(io)); | |
396 | } | |
397 | else | |
398 | result = PerlIO_close(IoIFP(io)); | |
399 | ||
400 | if (result == EOF && old_fd > PL_maxsysfd) { | |
401 | /* Why is this not Perl_warn*() call ? */ | |
402 | PerlIO_printf(Perl_error_log, | |
147e3846 KW |
403 | "Warning: unable to close filehandle %" HEKf |
404 | " properly.\n", | |
26297fe9 NC |
405 | HEKfARG(GvENAME_HEK(gv)) |
406 | ); | |
407 | } | |
408 | } | |
409 | } | |
4608196e | 410 | IoOFP(io) = IoIFP(io) = NULL; |
a687059c | 411 | } |
a2b41d5c NC |
412 | return io; |
413 | } | |
414 | ||
415 | bool | |
416 | Perl_do_openn(pTHX_ GV *gv, const char *oname, I32 len, int as_raw, | |
417 | int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp, | |
418 | I32 num_svs) | |
419 | { | |
4b451737 NC |
420 | PERL_ARGS_ASSERT_DO_OPENN; |
421 | ||
422 | if (as_raw) { | |
423 | /* sysopen style args, i.e. integer mode and permissions */ | |
424 | ||
425 | if (num_svs != 0) { | |
426 | Perl_croak(aTHX_ "panic: sysopen with multiple args, num_svs=%ld", | |
427 | (long) num_svs); | |
428 | } | |
7e30e49f | 429 | return do_open_raw(gv, oname, len, rawmode, rawperm, NULL); |
4b451737 NC |
430 | } |
431 | return do_open6(gv, oname, len, supplied_fp, svp, num_svs); | |
432 | } | |
433 | ||
434 | bool | |
435 | Perl_do_open_raw(pTHX_ GV *gv, const char *oname, STRLEN len, | |
7e30e49f | 436 | int rawmode, int rawperm, Stat_t *statbufp) |
4b451737 | 437 | { |
a2b41d5c NC |
438 | PerlIO *saveifp; |
439 | PerlIO *saveofp; | |
440 | int savefd; | |
441 | char savetype; | |
442 | char mode[PERL_MODE_MAX]; /* file mode ("r\0", "rb\0", "ab\0" etc.) */ | |
443 | IO * const io = openn_setup(gv, mode, &saveifp, &saveofp, &savefd, &savetype); | |
444 | int writing = 0; | |
445 | PerlIO *fp; | |
a2b41d5c | 446 | |
4b451737 | 447 | PERL_ARGS_ASSERT_DO_OPEN_RAW; |
c07a80fd | 448 | |
4b451737 NC |
449 | /* For ease of blame back to 5.000, keep the existing indenting. */ |
450 | { | |
b931b1d9 | 451 | /* sysopen style args, i.e. integer mode and permissions */ |
ee518936 | 452 | STRLEN ix = 0; |
e1ec3a88 | 453 | const int appendtrunc = |
3dccc55c | 454 | 0 |
d1da7611 | 455 | #ifdef O_APPEND /* Not fully portable. */ |
3dccc55c | 456 | |O_APPEND |
d1da7611 JH |
457 | #endif |
458 | #ifdef O_TRUNC /* Not fully portable. */ | |
3dccc55c | 459 | |O_TRUNC |
d1da7611 | 460 | #endif |
3dccc55c | 461 | ; |
6867be6d | 462 | const int modifyingmode = O_WRONLY|O_RDWR|O_CREAT|appendtrunc; |
3dccc55c | 463 | int ismodifying; |
9229bf8d | 464 | SV *namesv; |
3dccc55c | 465 | |
3dccc55c JH |
466 | /* It's not always |
467 | ||
468 | O_RDONLY 0 | |
469 | O_WRONLY 1 | |
470 | O_RDWR 2 | |
471 | ||
472 | It might be (in OS/390 and Mac OS Classic it is) | |
473 | ||
474 | O_WRONLY 1 | |
475 | O_RDONLY 2 | |
476 | O_RDWR 3 | |
477 | ||
478 | This means that simple & with O_RDWR would look | |
479 | like O_RDONLY is present. Therefore we have to | |
480 | be more careful. | |
481 | */ | |
482 | if ((ismodifying = (rawmode & modifyingmode))) { | |
483 | if ((ismodifying & O_WRONLY) == O_WRONLY || | |
484 | (ismodifying & O_RDWR) == O_RDWR || | |
485 | (ismodifying & (O_CREAT|appendtrunc))) | |
486 | TAINT_PROPER("sysopen"); | |
487 | } | |
3b6c1aba | 488 | mode[ix++] = IoTYPE_NUMERIC; /* Marker to openn to use numeric "sysopen" */ |
b931b1d9 | 489 | |
09458382 | 490 | #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE) |
b94c04ac | 491 | rawmode |= O_LARGEFILE; /* Transparently largefiley. */ |
5ff3f7a4 GS |
492 | #endif |
493 | ||
06c7082d | 494 | IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing); |
ee518936 | 495 | |
59cd0e26 | 496 | namesv = newSVpvn_flags(oname, len, SVs_TEMP); |
4b451737 | 497 | fp = PerlIO_openn(aTHX_ NULL, mode, -1, rawmode, rawperm, NULL, 1, &namesv); |
a687059c | 498 | } |
4b451737 | 499 | return openn_cleanup(gv, io, fp, mode, oname, saveifp, saveofp, savefd, |
7e30e49f | 500 | savetype, writing, 0, NULL, statbufp); |
4b451737 NC |
501 | } |
502 | ||
503 | bool | |
504 | Perl_do_open6(pTHX_ GV *gv, const char *oname, STRLEN len, | |
505 | PerlIO *supplied_fp, SV **svp, U32 num_svs) | |
506 | { | |
4b451737 NC |
507 | PerlIO *saveifp; |
508 | PerlIO *saveofp; | |
509 | int savefd; | |
510 | char savetype; | |
511 | char mode[PERL_MODE_MAX]; /* file mode ("r\0", "rb\0", "ab\0" etc.) */ | |
512 | IO * const io = openn_setup(gv, mode, &saveifp, &saveofp, &savefd, &savetype); | |
513 | int writing = 0; | |
514 | PerlIO *fp; | |
515 | bool was_fdopen = FALSE; | |
516 | char *type = NULL; | |
517 | ||
518 | PERL_ARGS_ASSERT_DO_OPEN6; | |
519 | ||
520 | /* For ease of blame back to 5.000, keep the existing indenting. */ | |
521 | { | |
b931b1d9 | 522 | /* Regular (non-sys) open */ |
2fbb330f | 523 | char *name; |
faecd977 | 524 | STRLEN olen = len; |
b931b1d9 NIS |
525 | char *tend; |
526 | int dodup = 0; | |
c564b489 NC |
527 | bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0; |
528 | ||
529 | /* Collect default raw/crlf info from the op */ | |
530 | if (PL_op && PL_op->op_type == OP_OPEN) { | |
531 | /* set up IO layers */ | |
532 | const U8 flags = PL_op->op_private; | |
533 | in_raw = (flags & OPpOPEN_IN_RAW); | |
534 | in_crlf = (flags & OPpOPEN_IN_CRLF); | |
535 | out_raw = (flags & OPpOPEN_OUT_RAW); | |
536 | out_crlf = (flags & OPpOPEN_OUT_CRLF); | |
537 | } | |
c07a80fd | 538 | |
2fbb330f | 539 | type = savepvn(oname, len); |
b931b1d9 | 540 | tend = type+len; |
faecd977 | 541 | SAVEFREEPV(type); |
eb649f83 AMS |
542 | |
543 | /* Lose leading and trailing white space */ | |
294b3b39 AL |
544 | while (isSPACE(*type)) |
545 | type++; | |
eb649f83 AMS |
546 | while (tend > type && isSPACE(tend[-1])) |
547 | *--tend = '\0'; | |
548 | ||
6170680b | 549 | if (num_svs) { |
41188aa0 TC |
550 | const char *p; |
551 | STRLEN nlen = 0; | |
c2be40b1 | 552 | /* New style explicit name, type is just mode and layer info */ |
9a869a14 | 553 | #ifdef USE_STDIO |
9a73c0b8 | 554 | if (SvROK(*svp) && !memchr(oname, '&', len)) { |
9a869a14 RGS |
555 | if (ckWARN(WARN_IO)) |
556 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
557 | "Can't open a reference"); | |
93189314 | 558 | SETERRNO(EINVAL, LIB_INVARG); |
a6fc70e5 | 559 | fp = NULL; |
9a869a14 RGS |
560 | goto say_false; |
561 | } | |
562 | #endif /* USE_STDIO */ | |
41188aa0 TC |
563 | p = (SvOK(*svp) || SvGMAGICAL(*svp)) ? SvPV(*svp, nlen) : NULL; |
564 | ||
a6fc70e5 NC |
565 | if (p && !IS_SAFE_PATHNAME(p, nlen, "open")) { |
566 | fp = NULL; | |
c8028aa6 | 567 | goto say_false; |
a6fc70e5 | 568 | } |
c8028aa6 | 569 | |
41188aa0 TC |
570 | name = p ? savepvn(p, nlen) : savepvs(""); |
571 | ||
faecd977 | 572 | SAVEFREEPV(name); |
6170680b | 573 | } |
faecd977 | 574 | else { |
faecd977 | 575 | name = type; |
b931b1d9 | 576 | len = tend-type; |
faecd977 | 577 | } |
6170680b | 578 | IoTYPE(io) = *type; |
516a5887 | 579 | if ((*type == IoTYPE_RDWR) && /* scary */ |
01a8ea99 | 580 | (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) && |
516a5887 | 581 | ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) { |
c2be40b1 | 582 | TAINT_PROPER("open"); |
6170680b | 583 | mode[1] = *type++; |
c07a80fd | 584 | writing = 1; |
a687059c | 585 | } |
c07a80fd | 586 | |
9f37169a | 587 | if (*type == IoTYPE_PIPE) { |
b931b1d9 NIS |
588 | if (num_svs) { |
589 | if (type[1] != IoTYPE_STD) { | |
c2be40b1 | 590 | unknown_open_mode: |
b931b1d9 NIS |
591 | Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname); |
592 | } | |
593 | type++; | |
6170680b | 594 | } |
294b3b39 AL |
595 | do { |
596 | type++; | |
597 | } while (isSPACE(*type)); | |
faecd977 | 598 | if (!num_svs) { |
6170680b | 599 | name = type; |
b931b1d9 | 600 | len = tend-type; |
faecd977 | 601 | } |
4a7d1889 NIS |
602 | if (*name == '\0') { |
603 | /* command is missing 19990114 */ | |
06eaf0bc | 604 | if (ckWARN(WARN_PIPE)) |
9014280d | 605 | Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open"); |
06eaf0bc | 606 | errno = EPIPE; |
a6fc70e5 | 607 | fp = NULL; |
06eaf0bc GS |
608 | goto say_false; |
609 | } | |
f27977c3 | 610 | if (!(*name == '-' && name[1] == '\0') || num_svs) |
c07a80fd | 611 | TAINT_ENV(); |
612 | TAINT_PROPER("piped open"); | |
b931b1d9 | 613 | if (!num_svs && name[len-1] == '|') { |
faecd977 | 614 | name[--len] = '\0' ; |
599cee73 | 615 | if (ckWARN(WARN_PIPE)) |
9014280d | 616 | Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe"); |
7b8d334a | 617 | } |
a1d180c4 | 618 | mode[0] = 'w'; |
c07a80fd | 619 | writing = 1; |
0c19750d | 620 | if (out_raw) |
5686ee58 | 621 | mode[1] = 'b'; |
0c19750d | 622 | else if (out_crlf) |
5686ee58 | 623 | mode[1] = 't'; |
4a7d1889 NIS |
624 | if (num_svs > 1) { |
625 | fp = PerlProc_popen_list(mode, num_svs, svp); | |
626 | } | |
627 | else { | |
628 | fp = PerlProc_popen(name,mode); | |
629 | } | |
1771866f NIS |
630 | if (num_svs) { |
631 | if (*type) { | |
632 | if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) { | |
a6fc70e5 | 633 | fp = NULL; |
1771866f NIS |
634 | goto say_false; |
635 | } | |
636 | } | |
637 | } | |
c2be40b1 | 638 | } /* IoTYPE_PIPE */ |
9f37169a | 639 | else if (*type == IoTYPE_WRONLY) { |
c07a80fd | 640 | TAINT_PROPER("open"); |
6170680b | 641 | type++; |
9f37169a JH |
642 | if (*type == IoTYPE_WRONLY) { |
643 | /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */ | |
50952442 | 644 | mode[0] = IoTYPE(io) = IoTYPE_APPEND; |
6170680b | 645 | type++; |
a0d0e21e | 646 | } |
ee518936 | 647 | else { |
c07a80fd | 648 | mode[0] = 'w'; |
ee518936 | 649 | } |
c07a80fd | 650 | writing = 1; |
651 | ||
0c19750d | 652 | if (out_raw) |
5686ee58 | 653 | mode[1] = 'b'; |
0c19750d | 654 | else if (out_crlf) |
5686ee58 | 655 | mode[1] = 't'; |
6170680b | 656 | if (*type == '&') { |
c07a80fd | 657 | duplicity: |
ecdeb87c | 658 | dodup = PERLIO_DUP_FD; |
e620cd72 NIS |
659 | type++; |
660 | if (*type == '=') { | |
c07a80fd | 661 | dodup = 0; |
e620cd72 | 662 | type++; |
4a7d1889 | 663 | } |
ee518936 | 664 | if (!num_svs && !*type && supplied_fp) { |
4a7d1889 | 665 | /* "<+&" etc. is used by typemaps */ |
c07a80fd | 666 | fp = supplied_fp; |
ee518936 | 667 | } |
a0d0e21e | 668 | else { |
35da51f7 | 669 | PerlIO *that_fp = NULL; |
b4464d55 | 670 | int wanted_fd; |
22ff3130 | 671 | UV uv; |
e620cd72 | 672 | if (num_svs > 1) { |
fe13d51d | 673 | /* diag_listed_as: More than one argument to '%s' open */ |
e620cd72 NIS |
674 | Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io)); |
675 | } | |
294b3b39 AL |
676 | while (isSPACE(*type)) |
677 | type++; | |
f90b7232 FC |
678 | if (num_svs && ( |
679 | SvIOK(*svp) | |
680 | || (SvPOKp(*svp) && looks_like_number(*svp)) | |
681 | )) { | |
b4464d55 | 682 | wanted_fd = SvUV(*svp); |
24a7a40d | 683 | num_svs = 0; |
ee518936 | 684 | } |
22ff3130 HS |
685 | else if (isDIGIT(*type) |
686 | && grok_atoUV(type, &uv, NULL) | |
687 | && uv <= INT_MAX | |
688 | ) { | |
689 | wanted_fd = (int)uv; | |
e620cd72 | 690 | } |
c07a80fd | 691 | else { |
e1ec3a88 | 692 | const IO* thatio; |
e620cd72 NIS |
693 | if (num_svs) { |
694 | thatio = sv_2io(*svp); | |
695 | } | |
696 | else { | |
35da51f7 | 697 | GV * const thatgv = gv_fetchpvn_flags(type, tend - type, |
90e5519e | 698 | 0, SVt_PVIO); |
e620cd72 NIS |
699 | thatio = GvIO(thatgv); |
700 | } | |
c07a80fd | 701 | if (!thatio) { |
6e21c824 | 702 | #ifdef EINVAL |
93189314 | 703 | SETERRNO(EINVAL,SS_IVCHAN); |
6e21c824 | 704 | #endif |
a6fc70e5 | 705 | fp = NULL; |
c07a80fd | 706 | goto say_false; |
707 | } | |
f4e789af | 708 | if ((that_fp = IoIFP(thatio))) { |
7211d486 JH |
709 | /* Flush stdio buffer before dup. --mjd |
710 | * Unfortunately SEEK_CURing 0 seems to | |
711 | * be optimized away on most platforms; | |
712 | * only Solaris and Linux seem to flush | |
713 | * on that. --jhi */ | |
7211d486 JH |
714 | /* On the other hand, do all platforms |
715 | * take gracefully to flushing a read-only | |
716 | * filehandle? Perhaps we should do | |
717 | * fsetpos(src)+fgetpos(dst)? --nik */ | |
ecdeb87c | 718 | PerlIO_flush(that_fp); |
b4464d55 | 719 | wanted_fd = PerlIO_fileno(that_fp); |
0759c907 JH |
720 | /* When dup()ing STDIN, STDOUT or STDERR |
721 | * explicitly set appropriate access mode */ | |
f4e789af NC |
722 | if (that_fp == PerlIO_stdout() |
723 | || that_fp == PerlIO_stderr()) | |
0759c907 | 724 | IoTYPE(io) = IoTYPE_WRONLY; |
f4e789af | 725 | else if (that_fp == PerlIO_stdin()) |
0759c907 JH |
726 | IoTYPE(io) = IoTYPE_RDONLY; |
727 | /* When dup()ing a socket, say result is | |
728 | * one as well */ | |
729 | else if (IoTYPE(thatio) == IoTYPE_SOCKET) | |
50952442 | 730 | IoTYPE(io) = IoTYPE_SOCKET; |
c07a80fd | 731 | } |
0c9375a5 TC |
732 | else { |
733 | SETERRNO(EBADF, RMS_IFI); | |
734 | fp = NULL; | |
735 | goto say_false; | |
736 | } | |
a0d0e21e | 737 | } |
ee518936 | 738 | if (!num_svs) |
bd61b366 | 739 | type = NULL; |
ecdeb87c NIS |
740 | if (that_fp) { |
741 | fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup); | |
742 | } | |
743 | else { | |
c07a80fd | 744 | if (dodup) |
884fc2d3 | 745 | wanted_fd = PerlLIO_dup_cloexec(wanted_fd); |
ecdeb87c NIS |
746 | else |
747 | was_fdopen = TRUE; | |
b4464d55 NC |
748 | if (!(fp = PerlIO_openn(aTHX_ type,mode,wanted_fd,0,0,NULL,num_svs,svp))) { |
749 | if (dodup && wanted_fd >= 0) | |
750 | PerlLIO_close(wanted_fd); | |
ecdeb87c | 751 | } |
faecd977 | 752 | } |
c07a80fd | 753 | } |
ee518936 | 754 | } /* & */ |
c07a80fd | 755 | else { |
294b3b39 AL |
756 | while (isSPACE(*type)) |
757 | type++; | |
b931b1d9 | 758 | if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) { |
b931b1d9 | 759 | type++; |
760ac839 | 760 | fp = PerlIO_stdout(); |
50952442 | 761 | IoTYPE(io) = IoTYPE_STD; |
7cf31beb | 762 | if (num_svs > 1) { |
fe13d51d | 763 | /* diag_listed_as: More than one argument to '%s' open */ |
7cf31beb NIS |
764 | Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD); |
765 | } | |
c07a80fd | 766 | } |
c0443cc0 | 767 | else { |
9229bf8d NC |
768 | if (num_svs) { |
769 | fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp); | |
770 | } | |
771 | else { | |
772 | SV *namesv = newSVpvn_flags(type, tend - type, SVs_TEMP); | |
bd61b366 | 773 | type = NULL; |
9229bf8d | 774 | fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,1,&namesv); |
ee518936 | 775 | } |
c07a80fd | 776 | } |
ee518936 | 777 | } /* !& */ |
7e72d509 JH |
778 | if (!fp && type && *type && *type != ':' && !isIDFIRST(*type)) |
779 | goto unknown_open_mode; | |
c2be40b1 | 780 | } /* IoTYPE_WRONLY */ |
9f37169a | 781 | else if (*type == IoTYPE_RDONLY) { |
294b3b39 AL |
782 | do { |
783 | type++; | |
784 | } while (isSPACE(*type)); | |
bf38876a | 785 | mode[0] = 'r'; |
0c19750d | 786 | if (in_raw) |
5686ee58 | 787 | mode[1] = 'b'; |
0c19750d | 788 | else if (in_crlf) |
5686ee58 | 789 | mode[1] = 't'; |
6170680b | 790 | if (*type == '&') { |
bf38876a | 791 | goto duplicity; |
6170680b | 792 | } |
b931b1d9 | 793 | if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) { |
b931b1d9 | 794 | type++; |
760ac839 | 795 | fp = PerlIO_stdin(); |
50952442 | 796 | IoTYPE(io) = IoTYPE_STD; |
7cf31beb | 797 | if (num_svs > 1) { |
fe13d51d | 798 | /* diag_listed_as: More than one argument to '%s' open */ |
7cf31beb NIS |
799 | Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD); |
800 | } | |
a687059c | 801 | } |
ee518936 | 802 | else { |
9229bf8d NC |
803 | if (num_svs) { |
804 | fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp); | |
805 | } | |
806 | else { | |
807 | SV *namesv = newSVpvn_flags(type, tend - type, SVs_TEMP); | |
bd61b366 | 808 | type = NULL; |
9229bf8d | 809 | fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,1,&namesv); |
ee518936 | 810 | } |
ee518936 | 811 | } |
7e72d509 JH |
812 | if (!fp && type && *type && *type != ':' && !isIDFIRST(*type)) |
813 | goto unknown_open_mode; | |
c2be40b1 JH |
814 | } /* IoTYPE_RDONLY */ |
815 | else if ((num_svs && /* '-|...' or '...|' */ | |
816 | type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) || | |
b931b1d9 | 817 | (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) { |
6170680b | 818 | if (num_svs) { |
b931b1d9 | 819 | type += 2; /* skip over '-|' */ |
6170680b IZ |
820 | } |
821 | else { | |
b931b1d9 NIS |
822 | *--tend = '\0'; |
823 | while (tend > type && isSPACE(tend[-1])) | |
824 | *--tend = '\0'; | |
a6e20a40 AL |
825 | for (; isSPACE(*type); type++) |
826 | ; | |
6170680b | 827 | name = type; |
b931b1d9 | 828 | len = tend-type; |
6170680b | 829 | } |
4a7d1889 NIS |
830 | if (*name == '\0') { |
831 | /* command is missing 19990114 */ | |
06eaf0bc | 832 | if (ckWARN(WARN_PIPE)) |
9014280d | 833 | Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open"); |
06eaf0bc | 834 | errno = EPIPE; |
a6fc70e5 | 835 | fp = NULL; |
06eaf0bc GS |
836 | goto say_false; |
837 | } | |
770526c1 | 838 | if (!(*name == '-' && name[1] == '\0') || num_svs) |
79072805 LW |
839 | TAINT_ENV(); |
840 | TAINT_PROPER("piped open"); | |
a1d180c4 | 841 | mode[0] = 'r'; |
0c19750d | 842 | |
0c19750d | 843 | if (in_raw) |
5686ee58 | 844 | mode[1] = 'b'; |
0c19750d | 845 | else if (in_crlf) |
5686ee58 | 846 | mode[1] = 't'; |
0c19750d | 847 | |
4a7d1889 NIS |
848 | if (num_svs > 1) { |
849 | fp = PerlProc_popen_list(mode,num_svs,svp); | |
850 | } | |
e620cd72 | 851 | else { |
4a7d1889 NIS |
852 | fp = PerlProc_popen(name,mode); |
853 | } | |
50952442 | 854 | IoTYPE(io) = IoTYPE_PIPE; |
1771866f | 855 | if (num_svs) { |
294b3b39 AL |
856 | while (isSPACE(*type)) |
857 | type++; | |
1771866f NIS |
858 | if (*type) { |
859 | if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) { | |
a6fc70e5 | 860 | fp = NULL; |
1771866f NIS |
861 | goto say_false; |
862 | } | |
863 | } | |
864 | } | |
a687059c | 865 | } |
c2be40b1 | 866 | else { /* layer(Args) */ |
6170680b | 867 | if (num_svs) |
c2be40b1 | 868 | goto unknown_open_mode; |
6170680b | 869 | name = type; |
50952442 | 870 | IoTYPE(io) = IoTYPE_RDONLY; |
a6e20a40 AL |
871 | for (; isSPACE(*name); name++) |
872 | ; | |
88b61e10 | 873 | mode[0] = 'r'; |
0c19750d | 874 | |
0c19750d | 875 | if (in_raw) |
5686ee58 | 876 | mode[1] = 'b'; |
0c19750d | 877 | else if (in_crlf) |
5686ee58 | 878 | mode[1] = 't'; |
0c19750d | 879 | |
770526c1 | 880 | if (*name == '-' && name[1] == '\0') { |
760ac839 | 881 | fp = PerlIO_stdin(); |
50952442 | 882 | IoTYPE(io) = IoTYPE_STD; |
a687059c | 883 | } |
16fe6d59 | 884 | else { |
9229bf8d NC |
885 | if (num_svs) { |
886 | fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp); | |
887 | } | |
888 | else { | |
889 | SV *namesv = newSVpvn_flags(type, tend - type, SVs_TEMP); | |
bd61b366 | 890 | type = NULL; |
9229bf8d | 891 | fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,1,&namesv); |
ee518936 | 892 | } |
16fe6d59 | 893 | } |
a687059c LW |
894 | } |
895 | } | |
a6fc70e5 NC |
896 | |
897 | say_false: | |
898 | return openn_cleanup(gv, io, fp, mode, oname, saveifp, saveofp, savefd, | |
7e30e49f | 899 | savetype, writing, was_fdopen, type, NULL); |
a6fc70e5 NC |
900 | } |
901 | ||
902 | /* Yes, this is ugly, but it's private, and I don't see a cleaner way to | |
903 | simplify the two-headed public interface of do_openn. */ | |
904 | static bool | |
905 | S_openn_cleanup(pTHX_ GV *gv, IO *io, PerlIO *fp, char *mode, const char *oname, | |
906 | PerlIO *saveifp, PerlIO *saveofp, int savefd, char savetype, | |
7e30e49f | 907 | int writing, bool was_fdopen, const char *type, Stat_t *statbufp) |
a6fc70e5 NC |
908 | { |
909 | int fd; | |
7e30e49f | 910 | Stat_t statbuf; |
a6fc70e5 NC |
911 | |
912 | PERL_ARGS_ASSERT_OPENN_CLEANUP; | |
913 | ||
b1234259 JH |
914 | Zero(&statbuf, 1, Stat_t); |
915 | ||
bee1dbe2 | 916 | if (!fp) { |
ce44635a | 917 | if (IoTYPE(io) == IoTYPE_RDONLY && ckWARN(WARN_NEWLINE) |
7cb3f959 | 918 | && should_warn_nl(oname) |
ce44635a | 919 | |
041457d9 | 920 | ) |
5d37acd6 | 921 | { |
7347ee54 | 922 | GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral); /* PL_warn_nl is constant */ |
9014280d | 923 | Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open"); |
7347ee54 | 924 | GCC_DIAG_RESTORE_STMT; |
5d37acd6 | 925 | } |
6e21c824 | 926 | goto say_false; |
bee1dbe2 | 927 | } |
a00b5bd3 NIS |
928 | |
929 | if (ckWARN(WARN_IO)) { | |
930 | if ((IoTYPE(io) == IoTYPE_RDONLY) && | |
931 | (fp == PerlIO_stdout() || fp == PerlIO_stderr())) { | |
9014280d | 932 | Perl_warner(aTHX_ packWARN(WARN_IO), |
147e3846 | 933 | "Filehandle STD%s reopened as %" HEKf |
d0c0e7dd | 934 | " only for input", |
97828cef | 935 | ((fp == PerlIO_stdout()) ? "OUT" : "ERR"), |
d0c0e7dd | 936 | HEKfARG(GvENAME_HEK(gv))); |
a00b5bd3 | 937 | } |
ee518936 | 938 | else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) { |
9014280d | 939 | Perl_warner(aTHX_ packWARN(WARN_IO), |
147e3846 | 940 | "Filehandle STDIN reopened as %" HEKf " only for output", |
d0c0e7dd FC |
941 | HEKfARG(GvENAME_HEK(gv)) |
942 | ); | |
a00b5bd3 NIS |
943 | } |
944 | } | |
945 | ||
e99cca91 | 946 | fd = PerlIO_fileno(fp); |
375ed12a JH |
947 | /* Do NOT do: "if (fd < 0) goto say_false;" here. If there is no |
948 | * fd assume it isn't a socket - this covers PerlIO::scalar - | |
949 | * otherwise unless we "know" the type probe for socket-ness. | |
e99cca91 NIS |
950 | */ |
951 | if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) { | |
7e30e49f | 952 | if (PerlLIO_fstat(fd,&statbuf) < 0) { |
e99cca91 NIS |
953 | /* If PerlIO claims to have fd we had better be able to fstat() it. */ |
954 | (void) PerlIO_close(fp); | |
6e21c824 | 955 | goto say_false; |
a687059c | 956 | } |
7114a2d2 | 957 | #ifndef PERL_MICRO |
7e30e49f | 958 | if (S_ISSOCK(statbuf.st_mode)) |
50952442 | 959 | IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */ |
99b89507 LW |
960 | #ifdef HAS_SOCKET |
961 | else if ( | |
7e30e49f | 962 | !(statbuf.st_mode & S_IFMT) |
0759c907 JH |
963 | && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */ |
964 | && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */ | |
965 | ) { /* on OS's that return 0 on fstat()ed pipe */ | |
e99cca91 NIS |
966 | char tmpbuf[256]; |
967 | Sock_size_t buflen = sizeof tmpbuf; | |
968 | if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0 | |
969 | || errno != ENOTSOCK) | |
970 | IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */ | |
971 | /* but some return 0 for streams too, sigh */ | |
99b89507 | 972 | } |
e99cca91 | 973 | #endif /* HAS_SOCKET */ |
7114a2d2 | 974 | #endif /* !PERL_MICRO */ |
a687059c | 975 | } |
e99cca91 NIS |
976 | |
977 | /* Eeek - FIXME !!! | |
978 | * If this is a standard handle we discard all the layer stuff | |
979 | * and just dup the fd into whatever was on the handle before ! | |
980 | */ | |
981 | ||
6e21c824 | 982 | if (saveifp) { /* must use old fp? */ |
f5b9d040 | 983 | /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR |
24c23ab4 | 984 | then dup the new fileno down |
f5b9d040 | 985 | */ |
6e21c824 | 986 | if (saveofp) { |
f5b9d040 | 987 | PerlIO_flush(saveofp); /* emulate PerlIO_close() */ |
6e21c824 | 988 | if (saveofp != saveifp) { /* was a socket? */ |
760ac839 | 989 | PerlIO_close(saveofp); |
6e21c824 LW |
990 | } |
991 | } | |
6e60e805 | 992 | if (savefd != fd) { |
e934609f | 993 | /* Still a small can-of-worms here if (say) PerlIO::scalar |
ecdeb87c NIS |
994 | is assigned to (say) STDOUT - for now let dup2() fail |
995 | and provide the error | |
996 | */ | |
375ed12a JH |
997 | if (fd < 0) { |
998 | SETERRNO(EBADF,RMS_IFI); | |
999 | goto say_false; | |
1000 | } else if (PerlLIO_dup2(fd, savefd) < 0) { | |
bd4a5668 NIS |
1001 | (void)PerlIO_close(fp); |
1002 | goto say_false; | |
1003 | } | |
d082dcd6 | 1004 | #ifdef VMS |
6e60e805 | 1005 | if (savefd != PerlIO_fileno(PerlIO_stdin())) { |
d0e2cf63 AMS |
1006 | char newname[FILENAME_MAX+1]; |
1007 | if (PerlIO_getname(fp, newname)) { | |
1008 | if (fd == PerlIO_fileno(PerlIO_stdout())) | |
0db50132 | 1009 | vmssetuserlnm("SYS$OUTPUT", newname); |
d0e2cf63 | 1010 | if (fd == PerlIO_fileno(PerlIO_stderr())) |
0db50132 | 1011 | vmssetuserlnm("SYS$ERROR", newname); |
d0e2cf63 | 1012 | } |
d082dcd6 JH |
1013 | } |
1014 | #endif | |
d0e2cf63 AMS |
1015 | |
1016 | #if !defined(WIN32) | |
1017 | /* PL_fdpid isn't used on Windows, so avoid this useless work. | |
1018 | * XXX Probably the same for a lot of other places. */ | |
1019 | { | |
1020 | Pid_t pid; | |
1021 | SV *sv; | |
1022 | ||
d0e2cf63 | 1023 | sv = *av_fetch(PL_fdpid,fd,TRUE); |
862a34c6 | 1024 | SvUPGRADE(sv, SVt_IV); |
d0e2cf63 | 1025 | pid = SvIVX(sv); |
45977657 | 1026 | SvIV_set(sv, 0); |
d0e2cf63 | 1027 | sv = *av_fetch(PL_fdpid,savefd,TRUE); |
862a34c6 | 1028 | SvUPGRADE(sv, SVt_IV); |
45977657 | 1029 | SvIV_set(sv, pid); |
d0e2cf63 AMS |
1030 | } |
1031 | #endif | |
1032 | ||
e212fc47 AMS |
1033 | if (was_fdopen) { |
1034 | /* need to close fp without closing underlying fd */ | |
1035 | int ofd = PerlIO_fileno(fp); | |
884fc2d3 | 1036 | int dupfd = ofd >= 0 ? PerlLIO_dup_cloexec(ofd) : -1; |
375ed12a JH |
1037 | if (ofd < 0 || dupfd < 0) { |
1038 | if (dupfd >= 0) | |
1039 | PerlLIO_close(dupfd); | |
1040 | goto say_false; | |
1041 | } | |
e212fc47 | 1042 | PerlIO_close(fp); |
884fc2d3 Z |
1043 | PerlLIO_dup2_cloexec(dupfd, ofd); |
1044 | setfd_inhexec_for_sysfd(ofd); | |
e212fc47 | 1045 | PerlLIO_close(dupfd); |
ecdeb87c | 1046 | } |
e212fc47 AMS |
1047 | else |
1048 | PerlIO_close(fp); | |
6e21c824 LW |
1049 | } |
1050 | fp = saveifp; | |
760ac839 | 1051 | PerlIO_clearerr(fp); |
e99cca91 | 1052 | fd = PerlIO_fileno(fp); |
6e21c824 | 1053 | } |
8990e307 | 1054 | IoIFP(io) = fp; |
b931b1d9 | 1055 | |
684bef36 | 1056 | IoFLAGS(io) &= ~IOf_NOLINE; |
bf38876a | 1057 | if (writing) { |
50952442 | 1058 | if (IoTYPE(io) == IoTYPE_SOCKET |
7e30e49f | 1059 | || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(statbuf.st_mode)) ) { |
a33cf58c | 1060 | char *s = mode; |
3b6c1aba JH |
1061 | if (*s == IoTYPE_IMPLICIT || *s == IoTYPE_NUMERIC) |
1062 | s++; | |
a33cf58c | 1063 | *s = 'w'; |
7c491510 | 1064 | if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,s,fd,0,0,NULL,0,NULL))) { |
760ac839 | 1065 | PerlIO_close(fp); |
6e21c824 | 1066 | goto say_false; |
fe14fcc3 | 1067 | } |
1462b684 LW |
1068 | } |
1069 | else | |
8990e307 | 1070 | IoOFP(io) = fp; |
bf38876a | 1071 | } |
7e30e49f DIM |
1072 | if (statbufp) |
1073 | *statbufp = statbuf; | |
1074 | ||
a687059c | 1075 | return TRUE; |
6e21c824 | 1076 | |
7b52d656 | 1077 | say_false: |
8990e307 LW |
1078 | IoIFP(io) = saveifp; |
1079 | IoOFP(io) = saveofp; | |
1080 | IoTYPE(io) = savetype; | |
6e21c824 | 1081 | return FALSE; |
a687059c LW |
1082 | } |
1083 | ||
e0d4aead TC |
1084 | /* Open a temp file in the same directory as an original name. |
1085 | */ | |
1086 | ||
1087 | static bool | |
1088 | S_openindirtemp(pTHX_ GV *gv, SV *orig_name, SV *temp_out_name) { | |
1089 | int fd; | |
1090 | PerlIO *fp; | |
1091 | const char *p = SvPV_nolen(orig_name); | |
1092 | const char *sep; | |
1093 | ||
1094 | /* look for the last directory separator */ | |
1095 | sep = strrchr(p, '/'); | |
1096 | ||
1097 | #ifdef DOSISH | |
1098 | { | |
1099 | const char *sep2; | |
1100 | if ((sep2 = strrchr(sep ? sep : p, '\\'))) | |
1101 | sep = sep2; | |
1102 | } | |
1103 | #endif | |
1104 | #ifdef VMS | |
1105 | if (!sep) { | |
1106 | const char *openp = strchr(p, '['); | |
1107 | if (openp) | |
1108 | sep = strchr(openp, ']'); | |
1109 | else { | |
1110 | sep = strchr(p, ':'); | |
1111 | } | |
1112 | } | |
1113 | #endif | |
1114 | if (sep) { | |
1115 | sv_setpvn(temp_out_name, p, sep - p + 1); | |
1116 | sv_catpvs(temp_out_name, "XXXXXXXX"); | |
1117 | } | |
1118 | else | |
1119 | sv_setpvs(temp_out_name, "XXXXXXXX"); | |
1120 | ||
026633c6 JH |
1121 | { |
1122 | int old_umask = umask(0177); | |
884fc2d3 | 1123 | fd = Perl_my_mkstemp_cloexec(SvPVX(temp_out_name)); |
026633c6 JH |
1124 | umask(old_umask); |
1125 | } | |
e0d4aead TC |
1126 | |
1127 | if (fd < 0) | |
1128 | return FALSE; | |
1129 | ||
1130 | fp = PerlIO_fdopen(fd, "w+"); | |
1131 | if (!fp) | |
1132 | return FALSE; | |
1133 | ||
1134 | return do_openn(gv, "+>&", 3, 0, 0, 0, fp, NULL, 0); | |
1135 | } | |
1136 | ||
733612e0 | 1137 | #if defined(HAS_UNLINKAT) && defined(HAS_RENAMEAT) && defined(HAS_FCHMODAT) && \ |
c3fcee07 JK |
1138 | (defined(HAS_DIRFD) || defined(HAS_DIR_DD_FD)) && !defined(NO_USE_ATFUNCTIONS) && \ |
1139 | defined(HAS_LINKAT) | |
733612e0 TC |
1140 | # define ARGV_USE_ATFUNCTIONS |
1141 | #endif | |
1142 | ||
1b4d0d79 TC |
1143 | /* Win32 doesn't necessarily return useful information |
1144 | * in st_dev, st_ino. | |
1145 | */ | |
184f90dc TC |
1146 | #ifndef DOSISH |
1147 | # define ARGV_USE_STAT_INO | |
1b4d0d79 TC |
1148 | #endif |
1149 | ||
e0d4aead TC |
1150 | #define ARGVMG_BACKUP_NAME 0 |
1151 | #define ARGVMG_TEMP_NAME 1 | |
1152 | #define ARGVMG_ORIG_NAME 2 | |
1153 | #define ARGVMG_ORIG_MODE 3 | |
05df5c88 | 1154 | #define ARGVMG_ORIG_PID 4 |
bb082417 | 1155 | |
bb082417 TC |
1156 | /* we store the entire stat_t since the ino_t and dev_t values might |
1157 | not fit in an IV. I could have created a new structure and | |
1158 | transferred them across, but this seemed too much effort for very | |
1159 | little win. | |
184f90dc TC |
1160 | |
1161 | We store it even when the *at() functions are available, since | |
1162 | while the C runtime might have definitions for these functions, the | |
1163 | operating system or a specific filesystem might not implement them. | |
1164 | eg. NetBSD 6 implements linkat() but only where the fds are AT_FDCWD. | |
bb082417 | 1165 | */ |
184f90dc TC |
1166 | #ifdef ARGV_USE_STAT_INO |
1167 | # define ARGVMG_ORIG_CWD_STAT 5 | |
1168 | #endif | |
1169 | ||
1170 | #ifdef ARGV_USE_ATFUNCTIONS | |
1171 | # define ARGVMG_ORIG_DIRP 6 | |
1172 | #endif | |
1173 | ||
1174 | #ifdef ENOTSUP | |
1175 | #define NotSupported(e) ((e) == ENOSYS || (e) == ENOTSUP) | |
1176 | #else | |
1177 | #define NotSupported(e) ((e) == ENOSYS) | |
bb082417 | 1178 | #endif |
e0d4aead TC |
1179 | |
1180 | static int | |
d0405818 | 1181 | S_argvout_free(pTHX_ SV *io, MAGIC *mg) { |
d0405818 | 1182 | PERL_UNUSED_ARG(io); |
e0d4aead TC |
1183 | |
1184 | /* note this can be entered once the file has been | |
1185 | successfully deleted too */ | |
d0405818 TC |
1186 | assert(IoTYPE(io) != IoTYPE_PIPE); |
1187 | ||
8ab93df0 TC |
1188 | /* mg_obj can be NULL if a thread is created with the handle open, in which |
1189 | case we leave any clean up to the parent thread */ | |
3d5e9c11 | 1190 | if (mg->mg_obj) { |
733612e0 TC |
1191 | #ifdef ARGV_USE_ATFUNCTIONS |
1192 | SV **dir_psv; | |
1193 | DIR *dir; | |
3d5e9c11 TC |
1194 | |
1195 | dir_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_DIRP, FALSE); | |
1196 | assert(dir_psv && *dir_psv && SvIOK(*dir_psv)); | |
1197 | dir = INT2PTR(DIR *, SvIV(*dir_psv)); | |
733612e0 | 1198 | #endif |
3d5e9c11 | 1199 | if (IoIFP(io)) { |
85d2f7ca TC |
1200 | if (PL_phase == PERL_PHASE_DESTRUCT && PL_statusvalue == 0) { |
1201 | (void)argvout_final(mg, (IO*)io, FALSE); | |
1202 | } | |
1203 | else { | |
1204 | SV **pid_psv; | |
1205 | PerlIO *iop = IoIFP(io); | |
05df5c88 | 1206 | |
85d2f7ca | 1207 | assert(SvTYPE(mg->mg_obj) == SVt_PVAV); |
05df5c88 | 1208 | |
85d2f7ca | 1209 | pid_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_PID, FALSE); |
05df5c88 | 1210 | |
85d2f7ca | 1211 | assert(pid_psv && *pid_psv); |
05df5c88 | 1212 | |
85d2f7ca TC |
1213 | if (SvIV(*pid_psv) == (IV)PerlProc_getpid()) { |
1214 | /* if we get here the file hasn't been closed explicitly by the | |
1215 | user and hadn't been closed implicitly by nextargv(), so | |
1216 | abandon the edit */ | |
1217 | SV **temp_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_TEMP_NAME, FALSE); | |
1218 | const char *temp_pv = SvPVX(*temp_psv); | |
184f90dc | 1219 | |
85d2f7ca TC |
1220 | assert(temp_psv && *temp_psv && SvPOK(*temp_psv)); |
1221 | (void)PerlIO_close(iop); | |
1222 | IoIFP(io) = IoOFP(io) = NULL; | |
733612e0 | 1223 | #ifdef ARGV_USE_ATFUNCTIONS |
85d2f7ca TC |
1224 | if (dir) { |
1225 | if (unlinkat(my_dirfd(dir), temp_pv, 0) < 0 && | |
1226 | NotSupported(errno)) | |
1227 | (void)UNLINK(temp_pv); | |
1228 | } | |
733612e0 | 1229 | #else |
85d2f7ca | 1230 | (void)UNLINK(temp_pv); |
733612e0 | 1231 | #endif |
85d2f7ca | 1232 | } |
3d5e9c11 | 1233 | } |
05df5c88 | 1234 | } |
3d5e9c11 TC |
1235 | #ifdef ARGV_USE_ATFUNCTIONS |
1236 | if (dir) | |
1237 | closedir(dir); | |
1238 | #endif | |
e0d4aead TC |
1239 | } |
1240 | ||
1241 | return 0; | |
1242 | } | |
1243 | ||
8ab93df0 TC |
1244 | static int |
1245 | S_argvout_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) { | |
1246 | PERL_UNUSED_ARG(param); | |
1247 | ||
1248 | /* ideally we could just remove the magic from the SV but we don't get the SV here */ | |
1249 | SvREFCNT_dec(mg->mg_obj); | |
1250 | mg->mg_obj = NULL; | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
e0d4aead TC |
1255 | /* Magic of this type has an AV containing the following: |
1256 | 0: name of the backup file (if any) | |
1257 | 1: name of the temp output file | |
1258 | 2: name of the original file | |
1259 | 3: file mode of the original file | |
05df5c88 TC |
1260 | 4: pid of the process we opened at, to prevent doing the renaming |
1261 | etc in both the child and the parent after a fork | |
733612e0 | 1262 | |
184f90dc TC |
1263 | If we have useful inode/device ids in stat_t we also keep: |
1264 | 5: a stat of the original current working directory | |
1265 | ||
733612e0 | 1266 | If we have unlinkat(), renameat(), fchmodat(), dirfd() we also keep: |
184f90dc | 1267 | 6: the DIR * for the current directory when we open the file, stored as an IV |
e0d4aead TC |
1268 | */ |
1269 | ||
1270 | static const MGVTBL argvout_vtbl = | |
1271 | { | |
1272 | NULL, /* svt_get */ | |
1273 | NULL, /* svt_set */ | |
1274 | NULL, /* svt_len */ | |
1275 | NULL, /* svt_clear */ | |
1276 | S_argvout_free, /* svt_free */ | |
1277 | NULL, /* svt_copy */ | |
8ab93df0 TC |
1278 | S_argvout_dup, /* svt_dup */ |
1279 | NULL /* svt_local */ | |
e0d4aead TC |
1280 | }; |
1281 | ||
760ac839 | 1282 | PerlIO * |
157fb5a1 | 1283 | Perl_nextargv(pTHX_ GV *gv, bool nomagicopen) |
a687059c | 1284 | { |
2d03de9c | 1285 | IO * const io = GvIOp(gv); |
502aca56 | 1286 | SV *const old_out_name = PL_inplace ? newSVsv(GvSV(gv)) : NULL; |
fe14fcc3 | 1287 | |
7918f24d NC |
1288 | PERL_ARGS_ASSERT_NEXTARGV; |
1289 | ||
502aca56 TC |
1290 | if (old_out_name) |
1291 | SAVEFREESV(old_out_name); | |
1292 | ||
3280af22 | 1293 | if (!PL_argvoutgv) |
fafc274c | 1294 | PL_argvoutgv = gv_fetchpvs("ARGVOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
5513c2cf | 1295 | if (io && (IoFLAGS(io) & (IOf_ARGV|IOf_START)) == (IOf_ARGV|IOf_START)) { |
18708f5a | 1296 | IoFLAGS(io) &= ~IOf_START; |
7a1c5554 | 1297 | if (PL_inplace) { |
294b3b39 | 1298 | assert(PL_defoutgv); |
29a861e7 NC |
1299 | Perl_av_create_and_push(aTHX_ &PL_argvout_stack, |
1300 | SvREFCNT_inc_simple_NN(PL_defoutgv)); | |
7a1c5554 | 1301 | } |
18708f5a | 1302 | } |
e0d4aead TC |
1303 | |
1304 | { | |
1305 | IO * const io = GvIOp(PL_argvoutgv); | |
1306 | if (io && IoIFP(io) && old_out_name) { | |
1307 | do_close(PL_argvoutgv, FALSE); | |
1308 | } | |
fe14fcc3 | 1309 | } |
e0d4aead | 1310 | |
c797f2d8 | 1311 | PL_lastfd = -1; |
3280af22 | 1312 | PL_filemode = 0; |
5c501b37 | 1313 | if (!GvAV(gv)) |
4608196e | 1314 | return NULL; |
698ac381 | 1315 | while (av_count(GvAV(gv)) > 0) { |
85aff577 | 1316 | STRLEN oldlen; |
1fa0529f | 1317 | SV *const sv = av_shift(GvAV(gv)); |
8990e307 | 1318 | SAVEFREESV(sv); |
4bac9ae4 | 1319 | SvTAINTED_off(GvSVn(gv)); /* previous tainting irrelevant */ |
e203899d | 1320 | sv_setsv(GvSVn(gv),sv); |
79072805 | 1321 | SvSETMAGIC(GvSV(gv)); |
3280af22 | 1322 | PL_oldname = SvPVx(GvSV(gv), oldlen); |
d8015975 | 1323 | if (LIKELY(!PL_inplace)) { |
157fb5a1 RGS |
1324 | if (nomagicopen |
1325 | ? do_open6(gv, "<", 1, NULL, &GvSV(gv), 1) | |
1326 | : do_open6(gv, PL_oldname, oldlen, NULL, NULL, 0) | |
1327 | ) { | |
d8015975 NC |
1328 | return IoIFP(GvIOp(gv)); |
1329 | } | |
1330 | } | |
1331 | else { | |
7e30e49f | 1332 | Stat_t statbuf; |
d8015975 NC |
1333 | /* This very long block ends with return IoIFP(GvIOp(gv)); |
1334 | Both this block and the block above fall through on open | |
1335 | failure to the warning code, and then the while loop above tries | |
1336 | the next entry. */ | |
7e30e49f | 1337 | if (do_open_raw(gv, PL_oldname, oldlen, O_RDONLY, 0, &statbuf)) { |
1fa0529f NC |
1338 | #ifndef FLEXFILENAMES |
1339 | int filedev; | |
1340 | int fileino; | |
1341 | #endif | |
733612e0 TC |
1342 | #ifdef ARGV_USE_ATFUNCTIONS |
1343 | DIR *curdir; | |
1344 | #endif | |
1fa0529f NC |
1345 | Uid_t fileuid; |
1346 | Gid_t filegid; | |
e0d4aead TC |
1347 | AV *magic_av = NULL; |
1348 | SV *temp_name_sv = NULL; | |
8ab93df0 | 1349 | MAGIC *mg; |
1fa0529f | 1350 | |
79072805 | 1351 | TAINT_PROPER("inplace open"); |
3280af22 | 1352 | if (oldlen == 1 && *PL_oldname == '-') { |
fafc274c NC |
1353 | setdefout(gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, |
1354 | SVt_PVIO)); | |
a0d0e21e | 1355 | return IoIFP(GvIOp(gv)); |
c623bd54 | 1356 | } |
99b89507 | 1357 | #ifndef FLEXFILENAMES |
7e30e49f DIM |
1358 | filedev = statbuf.st_dev; |
1359 | fileino = statbuf.st_ino; | |
99b89507 | 1360 | #endif |
7e30e49f DIM |
1361 | PL_filemode = statbuf.st_mode; |
1362 | fileuid = statbuf.st_uid; | |
1363 | filegid = statbuf.st_gid; | |
3280af22 | 1364 | if (!S_ISREG(PL_filemode)) { |
9b387841 NC |
1365 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE), |
1366 | "Can't do inplace edit: %s is not a regular file", | |
1367 | PL_oldname ); | |
79072805 | 1368 | do_close(gv,FALSE); |
c623bd54 LW |
1369 | continue; |
1370 | } | |
e0d4aead | 1371 | magic_av = newAV(); |
c9930541 | 1372 | if (*PL_inplace && strNE(PL_inplace, "*")) { |
2d03de9c | 1373 | const char *star = strchr(PL_inplace, '*'); |
2d259d92 | 1374 | if (star) { |
2d03de9c | 1375 | const char *begin = PL_inplace; |
8062ff11 | 1376 | SvPVCLEAR(sv); |
2d259d92 CK |
1377 | do { |
1378 | sv_catpvn(sv, begin, star - begin); | |
3280af22 | 1379 | sv_catpvn(sv, PL_oldname, oldlen); |
2d259d92 CK |
1380 | begin = ++star; |
1381 | } while ((star = strchr(begin, '*'))); | |
3d66d7bb GS |
1382 | if (*begin) |
1383 | sv_catpv(sv,begin); | |
2d259d92 CK |
1384 | } |
1385 | else { | |
3280af22 | 1386 | sv_catpv(sv,PL_inplace); |
2d259d92 | 1387 | } |
c623bd54 | 1388 | #ifndef FLEXFILENAMES |
7e30e49f DIM |
1389 | if ((PerlLIO_stat(SvPVX_const(sv),&statbuf) >= 0 |
1390 | && statbuf.st_dev == filedev | |
1391 | && statbuf.st_ino == fileino) | |
39e571d4 | 1392 | #ifdef DJGPP |
5f74f29c | 1393 | || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0) |
39e571d4 | 1394 | #endif |
f248d071 GS |
1395 | ) |
1396 | { | |
9b387841 | 1397 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE), |
147e3846 KW |
1398 | "Can't do inplace edit: %" |
1399 | SVf " would not be unique", | |
9b387841 | 1400 | SVfARG(sv)); |
e0d4aead | 1401 | goto cleanup_argv; |
c623bd54 | 1402 | } |
ff8e2863 | 1403 | #endif |
e0d4aead | 1404 | av_store(magic_av, ARGVMG_BACKUP_NAME, newSVsv(sv)); |
a687059c LW |
1405 | } |
1406 | ||
30fc4309 | 1407 | sv_setpvn(sv,PL_oldname,oldlen); |
748a9306 | 1408 | SETERRNO(0,0); /* in case sprintf set errno */ |
e0d4aead TC |
1409 | temp_name_sv = newSV(0); |
1410 | if (!S_openindirtemp(aTHX_ PL_argvoutgv, GvSV(gv), temp_name_sv)) { | |
1411 | SvREFCNT_dec(temp_name_sv); | |
1412 | /* diag_listed_as: Can't do inplace edit on %s: %s */ | |
1413 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: Cannot make temp name: %s", | |
9b387841 | 1414 | PL_oldname, Strerror(errno) ); |
e0d4aead TC |
1415 | #ifndef FLEXFILENAMES |
1416 | cleanup_argv: | |
1417 | #endif | |
1418 | do_close(gv,FALSE); | |
1419 | SvREFCNT_dec(magic_av); | |
1420 | continue; | |
fe14fcc3 | 1421 | } |
e0d4aead TC |
1422 | av_store(magic_av, ARGVMG_TEMP_NAME, temp_name_sv); |
1423 | av_store(magic_av, ARGVMG_ORIG_NAME, newSVsv(sv)); | |
1424 | av_store(magic_av, ARGVMG_ORIG_MODE, newSVuv(PL_filemode)); | |
05df5c88 | 1425 | av_store(magic_av, ARGVMG_ORIG_PID, newSViv((IV)PerlProc_getpid())); |
1b4d0d79 | 1426 | #if defined(ARGV_USE_ATFUNCTIONS) |
733612e0 TC |
1427 | curdir = opendir("."); |
1428 | av_store(magic_av, ARGVMG_ORIG_DIRP, newSViv(PTR2IV(curdir))); | |
1b4d0d79 | 1429 | #elif defined(ARGV_USE_STAT_INO) |
bb082417 TC |
1430 | if (PerlLIO_stat(".", &statbuf) >= 0) { |
1431 | av_store(magic_av, ARGVMG_ORIG_CWD_STAT, | |
1432 | newSVpvn((char *)&statbuf, sizeof(statbuf))); | |
1433 | } | |
733612e0 | 1434 | #endif |
3280af22 | 1435 | setdefout(PL_argvoutgv); |
dddabd86 | 1436 | sv_setsv(GvSVn(PL_argvoutgv), temp_name_sv); |
8ab93df0 TC |
1437 | mg = sv_magicext((SV*)GvIOp(PL_argvoutgv), (SV*)magic_av, PERL_MAGIC_uvar, &argvout_vtbl, NULL, 0); |
1438 | mg->mg_flags |= MGf_DUP; | |
e0d4aead | 1439 | SvREFCNT_dec(magic_av); |
3280af22 | 1440 | PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv))); |
375ed12a | 1441 | if (PL_lastfd >= 0) { |
45a23732 | 1442 | (void)PerlLIO_fstat(PL_lastfd,&statbuf); |
fe14fcc3 | 1443 | #ifdef HAS_FCHMOD |
375ed12a | 1444 | (void)fchmod(PL_lastfd,PL_filemode); |
a687059c | 1445 | #else |
375ed12a | 1446 | (void)PerlLIO_chmod(PL_oldname,PL_filemode); |
a687059c | 1447 | #endif |
45a23732 | 1448 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
b469f1e0 | 1449 | /* XXX silently ignore failures */ |
fe14fcc3 | 1450 | #ifdef HAS_FCHOWN |
b469f1e0 | 1451 | PERL_UNUSED_RESULT(fchown(PL_lastfd,fileuid,filegid)); |
4009c3ff | 1452 | #elif defined(HAS_CHOWN) |
b469f1e0 | 1453 | PERL_UNUSED_RESULT(PerlLIO_chown(PL_oldname,fileuid,filegid)); |
a687059c | 1454 | #endif |
375ed12a | 1455 | } |
fe14fcc3 | 1456 | } |
d8015975 | 1457 | return IoIFP(GvIOp(gv)); |
a687059c | 1458 | } |
d8015975 NC |
1459 | } /* successful do_open_raw(), PL_inplace non-NULL */ |
1460 | ||
1461 | if (ckWARN_d(WARN_INPLACE)) { | |
1462 | const int eno = errno; | |
7e30e49f | 1463 | Stat_t statbuf; |
45a23732 DD |
1464 | if (PerlLIO_stat(PL_oldname, &statbuf) >= 0 |
1465 | && !S_ISREG(statbuf.st_mode)) { | |
d8015975 NC |
1466 | Perl_warner(aTHX_ packWARN(WARN_INPLACE), |
1467 | "Can't do inplace edit: %s is not a regular file", | |
1468 | PL_oldname); | |
1469 | } | |
1470 | else { | |
1471 | Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s", | |
1472 | PL_oldname, Strerror(eno)); | |
1473 | } | |
4d61ec05 | 1474 | } |
a687059c | 1475 | } |
18708f5a GS |
1476 | if (io && (IoFLAGS(io) & IOf_ARGV)) |
1477 | IoFLAGS(io) |= IOf_START; | |
3280af22 | 1478 | if (PL_inplace) { |
7a1c5554 GS |
1479 | if (io && (IoFLAGS(io) & IOf_ARGV) |
1480 | && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0) | |
1481 | { | |
159b6efe | 1482 | GV * const oldout = MUTABLE_GV(av_pop(PL_argvout_stack)); |
18708f5a | 1483 | setdefout(oldout); |
8e217d4a | 1484 | SvREFCNT_dec_NN(oldout); |
4608196e | 1485 | return NULL; |
18708f5a | 1486 | } |
fafc274c | 1487 | setdefout(gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO)); |
a687059c | 1488 | } |
4608196e | 1489 | return NULL; |
a687059c LW |
1490 | } |
1491 | ||
84dbe61c | 1492 | #ifdef ARGV_USE_ATFUNCTIONS |
a3c63a94 | 1493 | # if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
84dbe61c TC |
1494 | |
1495 | /* FreeBSD 11 renameat() mis-behaves strangely with absolute paths in cases where the | |
1496 | * equivalent rename() succeeds | |
1497 | */ | |
1498 | static int | |
1499 | S_my_renameat(int olddfd, const char *oldpath, int newdfd, const char *newpath) { | |
1500 | /* this is intended only for use in Perl_do_close() */ | |
1501 | assert(olddfd == newdfd); | |
1502 | assert(PERL_FILE_IS_ABSOLUTE(oldpath) == PERL_FILE_IS_ABSOLUTE(newpath)); | |
1503 | if (PERL_FILE_IS_ABSOLUTE(oldpath)) { | |
1504 | return PerlLIO_rename(oldpath, newpath); | |
1505 | } | |
1506 | else { | |
1507 | return renameat(olddfd, oldpath, newdfd, newpath); | |
1508 | } | |
1509 | } | |
1510 | ||
1511 | # else | |
1512 | # define S_my_renameat(dh1, pv1, dh2, pv2) renameat((dh1), (pv1), (dh2), (pv2)) | |
a3c63a94 | 1513 | # endif /* if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) */ |
84dbe61c TC |
1514 | #endif |
1515 | ||
184f90dc | 1516 | static bool |
848643a9 | 1517 | S_dir_unchanged(pTHX_ const char *orig_pv, MAGIC *mg) { |
184f90dc TC |
1518 | Stat_t statbuf; |
1519 | ||
1520 | #ifdef ARGV_USE_STAT_INO | |
1521 | SV **stat_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_CWD_STAT, FALSE); | |
1522 | Stat_t *orig_cwd_stat = stat_psv && *stat_psv ? (Stat_t *)SvPVX(*stat_psv) : NULL; | |
1523 | ||
1524 | /* if the path is absolute the possible moving of cwd (which the file | |
1525 | might be in) isn't our problem. | |
1526 | This code tries to be reasonably balanced about detecting a changed | |
1527 | CWD, if we have the information needed to check that curdir has changed, we | |
1528 | check it | |
1529 | */ | |
1530 | if (!PERL_FILE_IS_ABSOLUTE(orig_pv) | |
1531 | && orig_cwd_stat | |
1532 | && PerlLIO_stat(".", &statbuf) >= 0 | |
1533 | && ( statbuf.st_dev != orig_cwd_stat->st_dev | |
1534 | || statbuf.st_ino != orig_cwd_stat->st_ino)) { | |
1535 | Perl_croak(aTHX_ "Cannot complete in-place edit of %s: %s", | |
1536 | orig_pv, "Current directory has changed"); | |
1537 | } | |
1538 | #else | |
1539 | SV **temp_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_TEMP_NAME, FALSE); | |
1540 | ||
1541 | /* Some platforms don't have useful st_ino etc, so just | |
1542 | check we can see the work file. | |
1543 | */ | |
1544 | if (!PERL_FILE_IS_ABSOLUTE(orig_pv) | |
1545 | && PerlLIO_stat(SvPVX(*temp_psv), &statbuf) < 0) { | |
3c67ad9b | 1546 | Perl_croak(aTHX_ "Cannot complete in-place edit of %s: %s", |
a06de4dc | 1547 | orig_pv, |
184f90dc TC |
1548 | "Work file is missing - did you change directory?"); |
1549 | } | |
1550 | #endif | |
1551 | ||
1552 | return TRUE; | |
1553 | } | |
1554 | ||
848643a9 TC |
1555 | #define dir_unchanged(orig_psv, mg) \ |
1556 | S_dir_unchanged(aTHX_ (orig_psv), (mg)) | |
184f90dc | 1557 | |
404395d2 TC |
1558 | STATIC bool |
1559 | S_argvout_final(pTHX_ MAGIC *mg, IO *io, bool not_implicit) { | |
1193dd27 | 1560 | bool retval; |
a687059c | 1561 | |
404395d2 TC |
1562 | /* ensure args are checked before we start using them */ |
1563 | PERL_ARGS_ASSERT_ARGVOUT_FINAL; | |
1564 | ||
1565 | { | |
e0d4aead TC |
1566 | /* handle to an in-place edit work file */ |
1567 | SV **back_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_BACKUP_NAME, FALSE); | |
1568 | SV **temp_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_TEMP_NAME, FALSE); | |
1569 | /* PL_oldname may have been modified by a nested ARGV use at this point */ | |
1570 | SV **orig_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_NAME, FALSE); | |
1571 | SV **mode_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_MODE, FALSE); | |
05df5c88 | 1572 | SV **pid_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_PID, FALSE); |
1b4d0d79 | 1573 | #if defined(ARGV_USE_ATFUNCTIONS) |
05df5c88 | 1574 | SV **dir_psv = av_fetch((AV*)mg->mg_obj, ARGVMG_ORIG_DIRP, FALSE); |
733612e0 TC |
1575 | DIR *dir; |
1576 | int dfd; | |
1b4d0d79 | 1577 | #endif |
e0d4aead TC |
1578 | UV mode; |
1579 | int fd; | |
1580 | ||
1581 | const char *orig_pv; | |
1582 | ||
1583 | assert(temp_psv && *temp_psv); | |
1584 | assert(orig_psv && *orig_psv); | |
1585 | assert(mode_psv && *mode_psv); | |
05df5c88 | 1586 | assert(pid_psv && *pid_psv); |
733612e0 TC |
1587 | #ifdef ARGV_USE_ATFUNCTIONS |
1588 | assert(dir_psv && *dir_psv); | |
1589 | dir = INT2PTR(DIR *, SvIVX(*dir_psv)); | |
1590 | dfd = my_dirfd(dir); | |
1591 | #endif | |
e0d4aead TC |
1592 | |
1593 | orig_pv = SvPVX(*orig_psv); | |
e0d4aead TC |
1594 | mode = SvUV(*mode_psv); |
1595 | ||
1596 | if ((mode & (S_ISUID|S_ISGID)) != 0 | |
1597 | && (fd = PerlIO_fileno(IoIFP(io))) >= 0) { | |
1598 | (void)PerlIO_flush(IoIFP(io)); | |
1599 | #ifdef HAS_FCHMOD | |
1600 | (void)fchmod(fd, mode); | |
1601 | #else | |
1602 | (void)PerlLIO_chmod(orig_pv, mode); | |
1603 | #endif | |
1604 | } | |
1605 | ||
1606 | retval = io_close(io, NULL, not_implicit, FALSE); | |
1607 | ||
05df5c88 TC |
1608 | if (SvIV(*pid_psv) != (IV)PerlProc_getpid()) { |
1609 | /* this is a child process, don't duplicate our rename() etc | |
1610 | processing below */ | |
1611 | goto freext; | |
1612 | } | |
1613 | ||
e0d4aead TC |
1614 | if (retval) { |
1615 | #if defined(DOSISH) || defined(__CYGWIN__) | |
1616 | if (PL_argvgv && GvIOp(PL_argvgv) | |
1617 | && IoIFP(GvIOp(PL_argvgv)) | |
1618 | && (IoFLAGS(GvIOp(PL_argvgv)) & (IOf_ARGV|IOf_START)) == IOf_ARGV) { | |
1619 | do_close(PL_argvgv, FALSE); | |
1620 | } | |
1621 | #endif | |
184f90dc | 1622 | #ifndef ARGV_USE_ATFUNCTIONS |
848643a9 | 1623 | if (!dir_unchanged(orig_pv, mg)) |
184f90dc TC |
1624 | goto abort_inplace; |
1625 | #endif | |
e0d4aead TC |
1626 | if (back_psv && *back_psv) { |
1627 | #if defined(HAS_LINK) && !defined(DOSISH) && !defined(__CYGWIN__) && defined(HAS_RENAME) | |
733612e0 TC |
1628 | if ( |
1629 | # ifdef ARGV_USE_ATFUNCTIONS | |
184f90dc TC |
1630 | linkat(dfd, orig_pv, dfd, SvPVX(*back_psv), 0) < 0 && |
1631 | !(UNLIKELY(NotSupported(errno)) && | |
848643a9 | 1632 | dir_unchanged(orig_pv, mg) && |
184f90dc | 1633 | link(orig_pv, SvPVX(*back_psv)) == 0) |
733612e0 TC |
1634 | # else |
1635 | link(orig_pv, SvPVX(*back_psv)) < 0 | |
1636 | # endif | |
1637 | ) | |
e0d4aead TC |
1638 | #endif |
1639 | { | |
1640 | #ifdef HAS_RENAME | |
733612e0 TC |
1641 | if ( |
1642 | # ifdef ARGV_USE_ATFUNCTIONS | |
184f90dc TC |
1643 | S_my_renameat(dfd, orig_pv, dfd, SvPVX(*back_psv)) < 0 && |
1644 | !(UNLIKELY(NotSupported(errno)) && | |
848643a9 | 1645 | dir_unchanged(orig_pv, mg) && |
184f90dc | 1646 | PerlLIO_rename(orig_pv, SvPVX(*back_psv)) == 0) |
733612e0 TC |
1647 | # else |
1648 | PerlLIO_rename(orig_pv, SvPVX(*back_psv)) < 0 | |
1649 | # endif | |
1650 | ) { | |
e0d4aead | 1651 | if (!not_implicit) { |
83419aa9 | 1652 | # ifdef ARGV_USE_ATFUNCTIONS |
184f90dc TC |
1653 | if (unlinkat(dfd, SvPVX_const(*temp_psv), 0) < 0 && |
1654 | UNLIKELY(NotSupported(errno)) && | |
848643a9 | 1655 | dir_unchanged(orig_pv, mg)) |
184f90dc | 1656 | (void)UNLINK(SvPVX_const(*temp_psv)); |
83419aa9 TC |
1657 | # else |
1658 | UNLINK(SvPVX(*temp_psv)); | |
1659 | # endif | |
e0d4aead TC |
1660 | Perl_croak(aTHX_ "Can't rename %s to %s: %s, skipping file", |
1661 | SvPVX(*orig_psv), SvPVX(*back_psv), Strerror(errno)); | |
1662 | } | |
1663 | /* should we warn here? */ | |
1664 | goto abort_inplace; | |
1665 | } | |
1666 | #else | |
1667 | (void)UNLINK(SvPVX(*back_psv)); | |
1668 | if (link(orig_pv, SvPVX(*back_psv))) { | |
1669 | if (!not_implicit) { | |
1670 | Perl_croak(aTHX_ "Can't rename %s to %s: %s, skipping file", | |
1671 | SvPVX(*orig_psv), SvPVX(*back_psv), Strerror(errno)); | |
1672 | } | |
1673 | goto abort_inplace; | |
1674 | } | |
1675 | /* we need to use link() to get the temp into place too, and linK() | |
1676 | fails if the new link name exists */ | |
1677 | (void)UNLINK(orig_pv); | |
1678 | #endif | |
1679 | } | |
1680 | } | |
1681 | #if defined(DOSISH) || defined(__CYGWIN__) || !defined(HAS_RENAME) | |
1682 | else { | |
1683 | UNLINK(orig_pv); | |
1684 | } | |
1685 | #endif | |
1686 | if ( | |
4009c3ff AC |
1687 | #if !defined(HAS_RENAME) |
1688 | link(SvPVX(*temp_psv), orig_pv) < 0 | |
1689 | #elif defined(ARGV_USE_ATFUNCTIONS) | |
184f90dc TC |
1690 | S_my_renameat(dfd, SvPVX(*temp_psv), dfd, orig_pv) < 0 && |
1691 | !(UNLIKELY(NotSupported(errno)) && | |
848643a9 | 1692 | dir_unchanged(orig_pv, mg) && |
184f90dc | 1693 | PerlLIO_rename(SvPVX(*temp_psv), orig_pv) == 0) |
e0d4aead | 1694 | #else |
4009c3ff | 1695 | PerlLIO_rename(SvPVX(*temp_psv), orig_pv) < 0 |
e0d4aead TC |
1696 | #endif |
1697 | ) { | |
1698 | if (!not_implicit) { | |
dddabd86 | 1699 | #ifdef ARGV_USE_ATFUNCTIONS |
184f90dc TC |
1700 | if (unlinkat(dfd, SvPVX_const(*temp_psv), 0) < 0 && |
1701 | NotSupported(errno)) | |
1702 | UNLINK(SvPVX(*temp_psv)); | |
dddabd86 TC |
1703 | #else |
1704 | UNLINK(SvPVX(*temp_psv)); | |
1705 | #endif | |
3c67ad9b TC |
1706 | /* diag_listed_as: Cannot complete in-place edit of %s: %s */ |
1707 | Perl_croak(aTHX_ "Cannot complete in-place edit of %s: failed to rename work file '%s' to '%s': %s", | |
1708 | orig_pv, SvPVX(*temp_psv), orig_pv, Strerror(errno)); | |
e0d4aead TC |
1709 | } |
1710 | abort_inplace: | |
1711 | UNLINK(SvPVX_const(*temp_psv)); | |
1712 | retval = FALSE; | |
1713 | } | |
1714 | #ifndef HAS_RENAME | |
1715 | UNLINK(SvPVX(*temp_psv)); | |
1716 | #endif | |
1717 | } | |
1718 | else { | |
733612e0 | 1719 | #ifdef ARGV_USE_ATFUNCTIONS |
184f90dc TC |
1720 | if (unlinkat(dfd, SvPVX_const(*temp_psv), 0) && |
1721 | NotSupported(errno)) | |
1722 | UNLINK(SvPVX_const(*temp_psv)); | |
1723 | ||
733612e0 | 1724 | #else |
e0d4aead | 1725 | UNLINK(SvPVX_const(*temp_psv)); |
733612e0 | 1726 | #endif |
e0d4aead TC |
1727 | if (!not_implicit) { |
1728 | Perl_croak(aTHX_ "Failed to close in-place work file %s: %s", | |
1729 | SvPVX(*temp_psv), Strerror(errno)); | |
1730 | } | |
1731 | } | |
404395d2 TC |
1732 | freext: |
1733 | ; | |
1734 | } | |
1735 | return retval; | |
1736 | } | |
1737 | ||
1738 | /* explicit renamed to avoid C++ conflict -- kja */ | |
1739 | bool | |
1740 | Perl_do_close(pTHX_ GV *gv, bool not_implicit) | |
1741 | { | |
1742 | bool retval; | |
1743 | IO *io; | |
1744 | MAGIC *mg; | |
1745 | ||
1746 | if (!gv) | |
1747 | gv = PL_argvgv; | |
1748 | if (!gv || !isGV_with_GP(gv)) { | |
1749 | if (not_implicit) | |
1750 | SETERRNO(EBADF,SS_IVCHAN); | |
1751 | return FALSE; | |
1752 | } | |
1753 | io = GvIO(gv); | |
1754 | if (!io) { /* never opened */ | |
1755 | if (not_implicit) { | |
1756 | report_evil_fh(gv); | |
1757 | SETERRNO(EBADF,SS_IVCHAN); | |
1758 | } | |
1759 | return FALSE; | |
1760 | } | |
1761 | if ((mg = mg_findext((SV*)io, PERL_MAGIC_uvar, &argvout_vtbl)) | |
1762 | && mg->mg_obj) { | |
1763 | retval = argvout_final(mg, io, not_implicit); | |
e0d4aead TC |
1764 | mg_freeext((SV*)io, PERL_MAGIC_uvar, &argvout_vtbl); |
1765 | } | |
1766 | else { | |
1767 | retval = io_close(io, NULL, not_implicit, FALSE); | |
1768 | } | |
517844ec | 1769 | if (not_implicit) { |
1193dd27 IZ |
1770 | IoLINES(io) = 0; |
1771 | IoPAGE(io) = 0; | |
1772 | IoLINES_LEFT(io) = IoPAGE_LEN(io); | |
1773 | } | |
50952442 | 1774 | IoTYPE(io) = IoTYPE_CLOSED; |
1193dd27 IZ |
1775 | return retval; |
1776 | } | |
1777 | ||
1778 | bool | |
96d7c888 | 1779 | Perl_io_close(pTHX_ IO *io, GV *gv, bool not_implicit, bool warn_on_fail) |
1193dd27 IZ |
1780 | { |
1781 | bool retval = FALSE; | |
1193dd27 | 1782 | |
7918f24d NC |
1783 | PERL_ARGS_ASSERT_IO_CLOSE; |
1784 | ||
8990e307 | 1785 | if (IoIFP(io)) { |
50952442 | 1786 | if (IoTYPE(io) == IoTYPE_PIPE) { |
35608a16 TC |
1787 | PerlIO *fh = IoIFP(io); |
1788 | int status; | |
1789 | ||
1790 | /* my_pclose() can propagate signals which might bypass any code | |
1791 | after the call here if the signal handler throws an exception. | |
1792 | This would leave the handle in the IO object and try to close it again | |
1793 | when the SV is destroyed on unwind or global destruction. | |
1794 | So NULL it early. | |
1795 | */ | |
1796 | IoOFP(io) = IoIFP(io) = NULL; | |
1797 | status = PerlProc_pclose(fh); | |
f2b5be74 | 1798 | if (not_implicit) { |
37038d91 | 1799 | STATUS_NATIVE_CHILD_SET(status); |
e5218da5 | 1800 | retval = (STATUS_UNIX == 0); |
f2b5be74 GS |
1801 | } |
1802 | else { | |
1803 | retval = (status != -1); | |
1804 | } | |
a687059c | 1805 | } |
50952442 | 1806 | else if (IoTYPE(io) == IoTYPE_STD) |
a687059c LW |
1807 | retval = TRUE; |
1808 | else { | |
8990e307 | 1809 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */ |
0bcc34c2 | 1810 | const bool prev_err = PerlIO_error(IoOFP(io)); |
f4725fad FC |
1811 | #ifdef USE_PERLIO |
1812 | if (prev_err) | |
1813 | PerlIO_restore_errno(IoOFP(io)); | |
1814 | #endif | |
e199e3be | 1815 | retval = (PerlIO_close(IoOFP(io)) != EOF && !prev_err); |
760ac839 | 1816 | PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ |
c2ab57d4 | 1817 | } |
e199e3be | 1818 | else { |
0bcc34c2 | 1819 | const bool prev_err = PerlIO_error(IoIFP(io)); |
f4725fad FC |
1820 | #ifdef USE_PERLIO |
1821 | if (prev_err) | |
1822 | PerlIO_restore_errno(IoIFP(io)); | |
1823 | #endif | |
e199e3be RGS |
1824 | retval = (PerlIO_close(IoIFP(io)) != EOF && !prev_err); |
1825 | } | |
a687059c | 1826 | } |
4608196e | 1827 | IoOFP(io) = IoIFP(io) = NULL; |
96d7c888 FC |
1828 | |
1829 | if (warn_on_fail && !retval) { | |
1830 | if (gv) | |
1831 | Perl_ck_warner_d(aTHX_ packWARN(WARN_IO), | |
1832 | "Warning: unable to close filehandle %" | |
147e3846 | 1833 | HEKf " properly: %" SVf, |
ac892e4a DM |
1834 | HEKfARG(GvNAME_HEK(gv)), |
1835 | SVfARG(get_sv("!",GV_ADD))); | |
96d7c888 FC |
1836 | else |
1837 | Perl_ck_warner_d(aTHX_ packWARN(WARN_IO), | |
1838 | "Warning: unable to close filehandle " | |
147e3846 | 1839 | "properly: %" SVf, |
ac892e4a | 1840 | SVfARG(get_sv("!",GV_ADD))); |
96d7c888 | 1841 | } |
79072805 | 1842 | } |
f2b5be74 | 1843 | else if (not_implicit) { |
93189314 | 1844 | SETERRNO(EBADF,SS_IVCHAN); |
20408e3c | 1845 | } |
1193dd27 | 1846 | |
a687059c LW |
1847 | return retval; |
1848 | } | |
1849 | ||
1850 | bool | |
864dbfa3 | 1851 | Perl_do_eof(pTHX_ GV *gv) |
a687059c | 1852 | { |
eb578fdb | 1853 | IO * const io = GvIO(gv); |
a687059c | 1854 | |
7918f24d NC |
1855 | PERL_ARGS_ASSERT_DO_EOF; |
1856 | ||
79072805 | 1857 | if (!io) |
a687059c | 1858 | return TRUE; |
7716c5c5 | 1859 | else if (IoTYPE(io) == IoTYPE_WRONLY) |
a5390457 | 1860 | report_wrongway_fh(gv, '>'); |
a687059c | 1861 | |
8990e307 | 1862 | while (IoIFP(io)) { |
760ac839 | 1863 | if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */ |
a20bf0c3 | 1864 | if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */ |
760ac839 LW |
1865 | return FALSE; /* this is the most usual case */ |
1866 | } | |
a687059c | 1867 | |
79852593 NC |
1868 | { |
1869 | /* getc and ungetc can stomp on errno */ | |
4ee39169 | 1870 | dSAVE_ERRNO; |
79852593 NC |
1871 | const int ch = PerlIO_getc(IoIFP(io)); |
1872 | if (ch != EOF) { | |
1873 | (void)PerlIO_ungetc(IoIFP(io),ch); | |
4ee39169 | 1874 | RESTORE_ERRNO; |
79852593 NC |
1875 | return FALSE; |
1876 | } | |
4ee39169 | 1877 | RESTORE_ERRNO; |
a687059c | 1878 | } |
fab3f3a7 | 1879 | |
760ac839 | 1880 | if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) { |
a20bf0c3 JH |
1881 | if (PerlIO_get_cnt(IoIFP(io)) < -1) |
1882 | PerlIO_set_cnt(IoIFP(io),-1); | |
760ac839 | 1883 | } |
533c011a | 1884 | if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */ |
157fb5a1 | 1885 | if (gv != PL_argvgv || !nextargv(gv, FALSE)) /* get another fp handy */ |
a687059c LW |
1886 | return TRUE; |
1887 | } | |
1888 | else | |
1889 | return TRUE; /* normal fp, definitely end of file */ | |
1890 | } | |
1891 | return TRUE; | |
1892 | } | |
1893 | ||
5ff3f7a4 | 1894 | Off_t |
864dbfa3 | 1895 | Perl_do_tell(pTHX_ GV *gv) |
a687059c | 1896 | { |
9c9f25b8 | 1897 | IO *const io = GvIO(gv); |
eb578fdb | 1898 | PerlIO *fp; |
a687059c | 1899 | |
7918f24d NC |
1900 | PERL_ARGS_ASSERT_DO_TELL; |
1901 | ||
9c9f25b8 | 1902 | if (io && (fp = IoIFP(io))) { |
8903cb82 | 1903 | return PerlIO_tell(fp); |
96e4d5b1 | 1904 | } |
51087808 | 1905 | report_evil_fh(gv); |
93189314 | 1906 | SETERRNO(EBADF,RMS_IFI); |
5ff3f7a4 | 1907 | return (Off_t)-1; |
a687059c LW |
1908 | } |
1909 | ||
1910 | bool | |
864dbfa3 | 1911 | Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence) |
a687059c | 1912 | { |
9c9f25b8 | 1913 | IO *const io = GvIO(gv); |
eb578fdb | 1914 | PerlIO *fp; |
a687059c | 1915 | |
9c9f25b8 | 1916 | if (io && (fp = IoIFP(io))) { |
8903cb82 | 1917 | return PerlIO_seek(fp, pos, whence) >= 0; |
137443ea | 1918 | } |
51087808 | 1919 | report_evil_fh(gv); |
93189314 | 1920 | SETERRNO(EBADF,RMS_IFI); |
a687059c LW |
1921 | return FALSE; |
1922 | } | |
1923 | ||
97cc44eb | 1924 | Off_t |
864dbfa3 | 1925 | Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence) |
8903cb82 | 1926 | { |
9c9f25b8 | 1927 | IO *const io = GvIO(gv); |
eb578fdb | 1928 | PerlIO *fp; |
8903cb82 | 1929 | |
7918f24d NC |
1930 | PERL_ARGS_ASSERT_DO_SYSSEEK; |
1931 | ||
375ed12a JH |
1932 | if (io && (fp = IoIFP(io))) { |
1933 | int fd = PerlIO_fileno(fp); | |
07bd88da JH |
1934 | if (fd < 0 || (whence == SEEK_SET && pos < 0)) { |
1935 | SETERRNO(EINVAL,LIB_INVARG); | |
1936 | return -1; | |
1937 | } else { | |
375ed12a JH |
1938 | return PerlLIO_lseek(fd, pos, whence); |
1939 | } | |
1940 | } | |
51087808 | 1941 | report_evil_fh(gv); |
93189314 | 1942 | SETERRNO(EBADF,RMS_IFI); |
d9b3e12d | 1943 | return (Off_t)-1; |
8903cb82 | 1944 | } |
1945 | ||
6ff81951 | 1946 | int |
a79b25b7 | 1947 | Perl_mode_from_discipline(pTHX_ const char *s, STRLEN len) |
16fe6d59 GS |
1948 | { |
1949 | int mode = O_BINARY; | |
81611534 | 1950 | PERL_UNUSED_CONTEXT; |
a79b25b7 | 1951 | if (s) { |
16fe6d59 GS |
1952 | while (*s) { |
1953 | if (*s == ':') { | |
1954 | switch (s[1]) { | |
1955 | case 'r': | |
e963d6d2 | 1956 | if (s[2] == 'a' && s[3] == 'w' |
16fe6d59 GS |
1957 | && (!s[4] || s[4] == ':' || isSPACE(s[4]))) |
1958 | { | |
1959 | mode = O_BINARY; | |
1960 | s += 4; | |
1961 | len -= 4; | |
1962 | break; | |
1963 | } | |
924ba076 | 1964 | /* FALLTHROUGH */ |
16fe6d59 | 1965 | case 'c': |
e963d6d2 | 1966 | if (s[2] == 'r' && s[3] == 'l' && s[4] == 'f' |
16fe6d59 GS |
1967 | && (!s[5] || s[5] == ':' || isSPACE(s[5]))) |
1968 | { | |
1969 | mode = O_TEXT; | |
1970 | s += 5; | |
1971 | len -= 5; | |
1972 | break; | |
1973 | } | |
924ba076 | 1974 | /* FALLTHROUGH */ |
16fe6d59 GS |
1975 | default: |
1976 | goto fail_discipline; | |
1977 | } | |
1978 | } | |
1979 | else if (isSPACE(*s)) { | |
1980 | ++s; | |
1981 | --len; | |
1982 | } | |
1983 | else { | |
4373e329 | 1984 | const char *end; |
7b52d656 | 1985 | fail_discipline: |
9a73c0b8 | 1986 | end = (char *) memchr(s+1, ':', len); |
16fe6d59 GS |
1987 | if (!end) |
1988 | end = s+len; | |
60382766 | 1989 | #ifndef PERLIO_LAYERS |
363c40c4 | 1990 | Perl_croak(aTHX_ "IO layers (like '%.*s') unavailable", end-s, s); |
60382766 | 1991 | #else |
18a33fb5 | 1992 | len -= end-s; |
60382766 NIS |
1993 | s = end; |
1994 | #endif | |
16fe6d59 GS |
1995 | } |
1996 | } | |
1997 | } | |
1998 | return mode; | |
1999 | } | |
2000 | ||
58e24eff | 2001 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) |
27da23d5 JH |
2002 | I32 |
2003 | my_chsize(int fd, Off_t length) | |
6eb13c3b | 2004 | { |
58e24eff SH |
2005 | #ifdef F_FREESP |
2006 | /* code courtesy of William Kucharski */ | |
2007 | #define HAS_CHSIZE | |
2008 | ||
c623ac67 | 2009 | Stat_t filebuf; |
6eb13c3b | 2010 | |
3028581b | 2011 | if (PerlLIO_fstat(fd, &filebuf) < 0) |
6eb13c3b LW |
2012 | return -1; |
2013 | ||
2014 | if (filebuf.st_size < length) { | |
2015 | ||
2016 | /* extend file length */ | |
2017 | ||
3028581b | 2018 | if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0) |
6eb13c3b LW |
2019 | return -1; |
2020 | ||
2021 | /* write a "0" byte */ | |
2022 | ||
3028581b | 2023 | if ((PerlLIO_write(fd, "", 1)) != 1) |
6eb13c3b LW |
2024 | return -1; |
2025 | } | |
2026 | else { | |
2027 | /* truncate length */ | |
35da51f7 | 2028 | struct flock fl; |
6eb13c3b LW |
2029 | fl.l_whence = 0; |
2030 | fl.l_len = 0; | |
2031 | fl.l_start = length; | |
a0d0e21e | 2032 | fl.l_type = F_WRLCK; /* write lock on file space */ |
6eb13c3b LW |
2033 | |
2034 | /* | |
a0d0e21e | 2035 | * This relies on the UNDOCUMENTED F_FREESP argument to |
6eb13c3b LW |
2036 | * fcntl(2), which truncates the file so that it ends at the |
2037 | * position indicated by fl.l_start. | |
2038 | * | |
2039 | * Will minor miracles never cease? | |
2040 | */ | |
2041 | ||
a0d0e21e | 2042 | if (fcntl(fd, F_FREESP, &fl) < 0) |
6eb13c3b LW |
2043 | return -1; |
2044 | ||
2045 | } | |
6eb13c3b | 2046 | return 0; |
58e24eff | 2047 | #else |
27da23d5 | 2048 | Perl_croak_nocontext("truncate not implemented"); |
a0d0e21e | 2049 | #endif /* F_FREESP */ |
27da23d5 | 2050 | return -1; |
58e24eff SH |
2051 | } |
2052 | #endif /* !HAS_TRUNCATE && !HAS_CHSIZE */ | |
ff8e2863 | 2053 | |
a687059c | 2054 | bool |
5aaab254 | 2055 | Perl_do_print(pTHX_ SV *sv, PerlIO *fp) |
a687059c | 2056 | { |
7918f24d NC |
2057 | PERL_ARGS_ASSERT_DO_PRINT; |
2058 | ||
79072805 LW |
2059 | /* assuming fp is checked earlier */ |
2060 | if (!sv) | |
2061 | return TRUE; | |
e9950d3b NC |
2062 | if (SvTYPE(sv) == SVt_IV && SvIOK(sv)) { |
2063 | assert(!SvGMAGICAL(sv)); | |
2064 | if (SvIsUV(sv)) | |
147e3846 | 2065 | PerlIO_printf(fp, "%" UVuf, (UV)SvUVX(sv)); |
e9950d3b | 2066 | else |
147e3846 | 2067 | PerlIO_printf(fp, "%" IVdf, (IV)SvIVX(sv)); |
e9950d3b NC |
2068 | return !PerlIO_error(fp); |
2069 | } | |
2070 | else { | |
2071 | STRLEN len; | |
676f44e7 | 2072 | /* Do this first to trigger any overloading. */ |
e9950d3b NC |
2073 | const char *tmps = SvPV_const(sv, len); |
2074 | U8 *tmpbuf = NULL; | |
2075 | bool happy = TRUE; | |
2076 | ||
d791f93f KW |
2077 | if (PerlIO_isutf8(fp)) { /* If the stream is utf8 ... */ |
2078 | if (!SvUTF8(sv)) { /* Convert to utf8 if necessary */ | |
676f44e7 NC |
2079 | /* We don't modify the original scalar. */ |
2080 | tmpbuf = bytes_to_utf8((const U8*) tmps, &len); | |
2081 | tmps = (char *) tmpbuf; | |
2082 | } | |
a099aed4 | 2083 | else if (ckWARN4_d(WARN_UTF8, WARN_SURROGATE, WARN_NON_UNICODE, WARN_NONCHAR)) { |
0876b9a0 KW |
2084 | (void) check_utf8_print((const U8*) tmps, len); |
2085 | } | |
d791f93f KW |
2086 | } /* else stream isn't utf8 */ |
2087 | else if (DO_UTF8(sv)) { /* But if is utf8 internally, attempt to | |
2088 | convert to bytes */ | |
676f44e7 NC |
2089 | STRLEN tmplen = len; |
2090 | bool utf8 = TRUE; | |
35da51f7 | 2091 | U8 * const result = bytes_from_utf8((const U8*) tmps, &tmplen, &utf8); |
676f44e7 | 2092 | if (!utf8) { |
d791f93f KW |
2093 | |
2094 | /* Here, succeeded in downgrading from utf8. Set up to below | |
2095 | * output the converted value */ | |
676f44e7 NC |
2096 | tmpbuf = result; |
2097 | tmps = (char *) tmpbuf; | |
2098 | len = tmplen; | |
2099 | } | |
d791f93f KW |
2100 | else { /* Non-utf8 output stream, but string only representable in |
2101 | utf8 */ | |
676f44e7 | 2102 | assert((char *)result == tmps); |
9b387841 | 2103 | Perl_ck_warner_d(aTHX_ packWARN(WARN_UTF8), |
21630838 FC |
2104 | "Wide character in %s", |
2105 | PL_op ? OP_DESC(PL_op) : "print" | |
2106 | ); | |
0876b9a0 KW |
2107 | /* Could also check that isn't one of the things to avoid |
2108 | * in utf8 by using check_utf8_print(), but not doing so, | |
2109 | * since the stream isn't a UTF8 stream */ | |
ae798467 NIS |
2110 | } |
2111 | } | |
e9950d3b NC |
2112 | /* To detect whether the process is about to overstep its |
2113 | * filesize limit we would need getrlimit(). We could then | |
2114 | * also transparently raise the limit with setrlimit() -- | |
2115 | * but only until the system hard limit/the filesystem limit, | |
2116 | * at which we would get EPERM. Note that when using buffered | |
2117 | * io the write failure can be delayed until the flush/close. --jhi */ | |
2118 | if (len && (PerlIO_write(fp,tmps,len) == 0)) | |
2119 | happy = FALSE; | |
2120 | Safefree(tmpbuf); | |
2121 | return happy ? !PerlIO_error(fp) : FALSE; | |
ff8e2863 | 2122 | } |
a687059c LW |
2123 | } |
2124 | ||
79072805 | 2125 | I32 |
0d7d409d | 2126 | Perl_my_stat_flags(pTHX_ const U32 flags) |
a687059c | 2127 | { |
39644a26 | 2128 | dSP; |
79072805 | 2129 | IO *io; |
2dd78f96 | 2130 | GV* gv; |
79072805 | 2131 | |
533c011a | 2132 | if (PL_op->op_flags & OPf_REF) { |
2dd78f96 | 2133 | gv = cGVOP_gv; |
748a9306 | 2134 | do_fstat: |
97c8f3e6 Z |
2135 | if (gv == PL_defgv) { |
2136 | if (PL_laststatval < 0) | |
2137 | SETERRNO(EBADF,RMS_IFI); | |
5228a96c | 2138 | return PL_laststatval; |
97c8f3e6 | 2139 | } |
2dd78f96 | 2140 | io = GvIO(gv); |
ad02613c | 2141 | do_fstat_have_io: |
5228a96c | 2142 | PL_laststype = OP_STAT; |
bd5f6c01 | 2143 | PL_statgv = gv ? gv : (GV *)io; |
8062ff11 | 2144 | SvPVCLEAR(PL_statname); |
77616968 | 2145 | if (io) { |
5228a96c | 2146 | if (IoIFP(io)) { |
375ed12a | 2147 | int fd = PerlIO_fileno(IoIFP(io)); |
77616968 JH |
2148 | if (fd < 0) { |
2149 | /* E.g. PerlIO::scalar has no real fd. */ | |
97c8f3e6 | 2150 | SETERRNO(EBADF,RMS_IFI); |
77616968 JH |
2151 | return (PL_laststatval = -1); |
2152 | } else { | |
375ed12a JH |
2153 | return (PL_laststatval = PerlLIO_fstat(fd, &PL_statcache)); |
2154 | } | |
5228a96c | 2155 | } else if (IoDIRP(io)) { |
3497a01f | 2156 | return (PL_laststatval = PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache)); |
5228a96c | 2157 | } |
5228a96c | 2158 | } |
3888144c FC |
2159 | PL_laststatval = -1; |
2160 | report_evil_fh(gv); | |
97c8f3e6 | 2161 | SETERRNO(EBADF,RMS_IFI); |
3888144c | 2162 | return -1; |
a687059c | 2163 | } |
d2c4d2d1 | 2164 | else if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t)) |
8db8f6b6 FC |
2165 | == OPpFT_STACKED) |
2166 | return PL_laststatval; | |
d2c4d2d1 FC |
2167 | else { |
2168 | SV* const sv = TOPs; | |
a155eb05 | 2169 | const char *s, *d; |
4ecd490c | 2170 | STRLEN len; |
094a3eec | 2171 | if ((gv = MAYBE_DEREF_GV_flags(sv,flags))) { |
748a9306 LW |
2172 | goto do_fstat; |
2173 | } | |
ad02613c | 2174 | else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) { |
a45c7426 | 2175 | io = MUTABLE_IO(SvRV(sv)); |
7f39519f | 2176 | gv = NULL; |
ad02613c SP |
2177 | goto do_fstat_have_io; |
2178 | } | |
748a9306 | 2179 | |
0d7d409d | 2180 | s = SvPV_flags_const(sv, len, flags); |
a0714e2c | 2181 | PL_statgv = NULL; |
4ecd490c | 2182 | sv_setpvn(PL_statname, s, len); |
a155eb05 | 2183 | d = SvPVX_const(PL_statname); /* s now NUL-terminated */ |
3280af22 | 2184 | PL_laststype = OP_STAT; |
a155eb05 TC |
2185 | if (!IS_SAFE_PATHNAME(s, len, OP_NAME(PL_op))) { |
2186 | PL_laststatval = -1; | |
2187 | } | |
2188 | else { | |
2189 | PL_laststatval = PerlLIO_stat(d, &PL_statcache); | |
2190 | } | |
7cb3f959 | 2191 | if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && should_warn_nl(s)) { |
7347ee54 | 2192 | GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral); /* PL_warn_nl is constant */ |
9014280d | 2193 | Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat"); |
7347ee54 | 2194 | GCC_DIAG_RESTORE_STMT; |
5d37acd6 | 2195 | } |
3280af22 | 2196 | return PL_laststatval; |
a687059c LW |
2197 | } |
2198 | } | |
2199 | ||
fbb0b3b3 | 2200 | |
79072805 | 2201 | I32 |
0d7d409d | 2202 | Perl_my_lstat_flags(pTHX_ const U32 flags) |
c623bd54 | 2203 | { |
a1894d81 | 2204 | static const char* const no_prev_lstat = "The stat preceding -l _ wasn't an lstat"; |
39644a26 | 2205 | dSP; |
b16276bb | 2206 | const char *file; |
a155eb05 | 2207 | STRLEN len; |
cd22fad3 | 2208 | SV* const sv = TOPs; |
5840701a | 2209 | bool isio = FALSE; |
533c011a | 2210 | if (PL_op->op_flags & OPf_REF) { |
638eceb6 | 2211 | if (cGVOP_gv == PL_defgv) { |
3280af22 | 2212 | if (PL_laststype != OP_LSTAT) |
0157ef98 | 2213 | Perl_croak(aTHX_ "%s", no_prev_lstat); |
97c8f3e6 Z |
2214 | if (PL_laststatval < 0) |
2215 | SETERRNO(EBADF,RMS_IFI); | |
3280af22 | 2216 | return PL_laststatval; |
fe14fcc3 | 2217 | } |
31b139ba | 2218 | PL_laststatval = -1; |
5d3e98de | 2219 | if (ckWARN(WARN_IO)) { |
5840701a | 2220 | /* diag_listed_as: Use of -l on filehandle%s */ |
d0c0e7dd | 2221 | Perl_warner(aTHX_ packWARN(WARN_IO), |
147e3846 | 2222 | "Use of -l on filehandle %" HEKf, |
d0c0e7dd | 2223 | HEKfARG(GvENAME_HEK(cGVOP_gv))); |
5d3e98de | 2224 | } |
97c8f3e6 | 2225 | SETERRNO(EBADF,RMS_IFI); |
31b139ba | 2226 | return -1; |
fe14fcc3 | 2227 | } |
8db8f6b6 FC |
2228 | if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t)) |
2229 | == OPpFT_STACKED) { | |
1f26655e | 2230 | if (PL_laststype != OP_LSTAT) |
0157ef98 | 2231 | Perl_croak(aTHX_ "%s", no_prev_lstat); |
1f26655e | 2232 | return PL_laststatval; |
cd22fad3 | 2233 | } |
c623bd54 | 2234 | |
3280af22 | 2235 | PL_laststype = OP_LSTAT; |
a0714e2c | 2236 | PL_statgv = NULL; |
5840701a FC |
2237 | if ( ( (SvROK(sv) && ( isGV_with_GP(SvRV(sv)) |
2238 | || (isio = SvTYPE(SvRV(sv)) == SVt_PVIO) ) | |
2239 | ) | |
2240 | || isGV_with_GP(sv) | |
2241 | ) | |
2242 | && ckWARN(WARN_IO)) { | |
2243 | if (isio) | |
2244 | /* diag_listed_as: Use of -l on filehandle%s */ | |
2245 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
2246 | "Use of -l on filehandle"); | |
2247 | else | |
2248 | /* diag_listed_as: Use of -l on filehandle%s */ | |
2249 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
147e3846 | 2250 | "Use of -l on filehandle %" HEKf, |
10bafe90 BF |
2251 | HEKfARG(GvENAME_HEK((const GV *) |
2252 | (SvROK(sv) ? SvRV(sv) : sv)))); | |
cd22fad3 | 2253 | } |
a155eb05 | 2254 | file = SvPV_flags_const(sv, len, flags); |
b16276bb | 2255 | sv_setpv(PL_statname,file); |
a155eb05 TC |
2256 | if (!IS_SAFE_PATHNAME(file, len, OP_NAME(PL_op))) { |
2257 | PL_laststatval = -1; | |
2258 | } | |
2259 | else { | |
2260 | PL_laststatval = PerlLIO_lstat(file,&PL_statcache); | |
2261 | } | |
7cb3f959 | 2262 | if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && should_warn_nl(file)) { |
7347ee54 | 2263 | GCC_DIAG_IGNORE_STMT(-Wformat-nonliteral); /* PL_warn_nl is constant */ |
5d37acd6 | 2264 | Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat"); |
7347ee54 | 2265 | GCC_DIAG_RESTORE_STMT; |
5d37acd6 | 2266 | } |
3280af22 | 2267 | return PL_laststatval; |
c623bd54 LW |
2268 | } |
2269 | ||
a0f2c8ec JD |
2270 | static void |
2271 | S_exec_failed(pTHX_ const char *cmd, int fd, int do_report) | |
2272 | { | |
2273 | const int e = errno; | |
7918f24d | 2274 | PERL_ARGS_ASSERT_EXEC_FAILED; |
738ab09f AB |
2275 | |
2276 | if (ckWARN(WARN_EXEC)) | |
2277 | Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s", | |
2278 | cmd, Strerror(e)); | |
a0f2c8ec | 2279 | if (do_report) { |
b469f1e0 JH |
2280 | /* XXX silently ignore failures */ |
2281 | PERL_UNUSED_RESULT(PerlLIO_write(fd, (void*)&e, sizeof(int))); | |
a0f2c8ec JD |
2282 | PerlLIO_close(fd); |
2283 | } | |
2284 | } | |
2285 | ||
738ab09f | 2286 | bool |
5aaab254 | 2287 | Perl_do_aexec5(pTHX_ SV *really, SV **mark, SV **sp, |
2aa1486d | 2288 | int fd, int do_report) |
d5a9bfb0 | 2289 | { |
7918f24d | 2290 | PERL_ARGS_ASSERT_DO_AEXEC5; |
822c8b4d | 2291 | #if defined(__LIBCATAMOUNT__) |
cd39f2b6 JH |
2292 | Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system"); |
2293 | #else | |
2fcab330 | 2294 | assert(sp >= mark); |
282fc0b3 | 2295 | ENTER; |
2fcab330 | 2296 | { |
282fc0b3 | 2297 | const char **argv, **a; |
6136c704 | 2298 | const char *tmps = NULL; |
282fc0b3 Z |
2299 | Newx(argv, sp - mark + 1, const char*); |
2300 | SAVEFREEPV(argv); | |
2301 | a = argv; | |
890ce7af | 2302 | |
79072805 | 2303 | while (++mark <= sp) { |
282fc0b3 Z |
2304 | if (*mark) { |
2305 | char *arg = savepv(SvPV_nolen_const(*mark)); | |
2306 | SAVEFREEPV(arg); | |
2307 | *a++ = arg; | |
2308 | } else | |
a687059c LW |
2309 | *a++ = ""; |
2310 | } | |
6136c704 | 2311 | *a = NULL; |
282fc0b3 Z |
2312 | if (really) { |
2313 | tmps = savepv(SvPV_nolen_const(really)); | |
2314 | SAVEFREEPV(tmps); | |
2315 | } | |
2316 | if ((!really && argv[0] && *argv[0] != '/') || | |
91b2752f | 2317 | (really && *tmps != '/')) /* will execvp use PATH? */ |
79072805 | 2318 | TAINT_ENV(); /* testing IFS here is overkill, probably */ |
b35112e7 | 2319 | PERL_FPU_PRE_EXEC |
839a9f02 | 2320 | if (really && *tmps) { |
282fc0b3 Z |
2321 | PerlProc_execvp(tmps,EXEC_ARGV_CAST(argv)); |
2322 | } else if (argv[0]) { | |
2323 | PerlProc_execvp(argv[0],EXEC_ARGV_CAST(argv)); | |
2fcab330 DIM |
2324 | } else { |
2325 | SETERRNO(ENOENT,RMS_FNF); | |
2326 | } | |
b35112e7 | 2327 | PERL_FPU_POST_EXEC |
282fc0b3 | 2328 | S_exec_failed(aTHX_ (really ? tmps : argv[0] ? argv[0] : ""), fd, do_report); |
a687059c | 2329 | } |
282fc0b3 | 2330 | LEAVE; |
cd39f2b6 | 2331 | #endif |
738ab09f | 2332 | return FALSE; |
a687059c LW |
2333 | } |
2334 | ||
9555a685 | 2335 | #ifdef PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION |
e446cec8 | 2336 | |
738ab09f | 2337 | bool |
2fbb330f | 2338 | Perl_do_exec3(pTHX_ const char *incmd, int fd, int do_report) |
e446cec8 | 2339 | { |
282fc0b3 | 2340 | const char **argv, **a; |
eb578fdb | 2341 | char *s; |
15db3ae2 | 2342 | char *buf; |
2fbb330f | 2343 | char *cmd; |
2fbb330f | 2344 | /* Make a copy so we can change it */ |
6fca0082 | 2345 | const Size_t cmdlen = strlen(incmd) + 1; |
7918f24d NC |
2346 | |
2347 | PERL_ARGS_ASSERT_DO_EXEC3; | |
2348 | ||
282fc0b3 | 2349 | ENTER; |
15db3ae2 | 2350 | Newx(buf, cmdlen, char); |
282fc0b3 | 2351 | SAVEFREEPV(buf); |
15db3ae2 | 2352 | cmd = buf; |
cfff9797 | 2353 | memcpy(cmd, incmd, cmdlen); |
a687059c | 2354 | |
748a9306 LW |
2355 | while (*cmd && isSPACE(*cmd)) |
2356 | cmd++; | |
2357 | ||
a687059c LW |
2358 | /* save an extra exec if possible */ |
2359 | ||
bf38876a | 2360 | #ifdef CSH |
d05c1ba0 | 2361 | { |
0c19750d | 2362 | char flags[PERL_FLAGS_MAX]; |
d05c1ba0 | 2363 | if (strnEQ(cmd,PL_cshname,PL_cshlen) && |
c8b388b0 | 2364 | strBEGINs(cmd+PL_cshlen," -c")) { |
28f0d0ec | 2365 | my_strlcpy(flags, "-c", PERL_FLAGS_MAX); |
d05c1ba0 JH |
2366 | s = cmd+PL_cshlen+3; |
2367 | if (*s == 'f') { | |
2368 | s++; | |
28f0d0ec | 2369 | my_strlcat(flags, "f", PERL_FLAGS_MAX - 2); |
d05c1ba0 JH |
2370 | } |
2371 | if (*s == ' ') | |
2372 | s++; | |
2373 | if (*s++ == '\'') { | |
0bcc34c2 | 2374 | char * const ncmd = s; |
d05c1ba0 JH |
2375 | |
2376 | while (*s) | |
2377 | s++; | |
2378 | if (s[-1] == '\n') | |
2379 | *--s = '\0'; | |
2380 | if (s[-1] == '\'') { | |
2381 | *--s = '\0'; | |
b35112e7 | 2382 | PERL_FPU_PRE_EXEC |
738ab09f | 2383 | PerlProc_execl(PL_cshname, "csh", flags, ncmd, (char*)NULL); |
b35112e7 | 2384 | PERL_FPU_POST_EXEC |
d05c1ba0 | 2385 | *s = '\''; |
a0f2c8ec | 2386 | S_exec_failed(aTHX_ PL_cshname, fd, do_report); |
282fc0b3 | 2387 | goto leave; |
d05c1ba0 JH |
2388 | } |
2389 | } | |
a687059c LW |
2390 | } |
2391 | } | |
bf38876a | 2392 | #endif /* CSH */ |
a687059c LW |
2393 | |
2394 | /* see if there are shell metacharacters in it */ | |
2395 | ||
748a9306 LW |
2396 | if (*cmd == '.' && isSPACE(cmd[1])) |
2397 | goto doshell; | |
2398 | ||
c8b388b0 | 2399 | if (strBEGINs(cmd,"exec") && isSPACE(cmd[4])) |
748a9306 LW |
2400 | goto doshell; |
2401 | ||
294b3b39 | 2402 | s = cmd; |
0eb30aeb | 2403 | while (isWORDCHAR(*s)) |
294b3b39 | 2404 | s++; /* catch VAR=val gizmo */ |
63f2c1e1 LW |
2405 | if (*s == '=') |
2406 | goto doshell; | |
748a9306 | 2407 | |
a687059c | 2408 | for (s = cmd; *s; s++) { |
d05c1ba0 | 2409 | if (*s != ' ' && !isALPHA(*s) && |
4aada8b9 | 2410 | memCHRs("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c LW |
2411 | if (*s == '\n' && !s[1]) { |
2412 | *s = '\0'; | |
2413 | break; | |
2414 | } | |
603a98b0 IZ |
2415 | /* handle the 2>&1 construct at the end */ |
2416 | if (*s == '>' && s[1] == '&' && s[2] == '1' | |
2417 | && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2]) | |
2418 | && (!s[3] || isSPACE(s[3]))) | |
2419 | { | |
6867be6d | 2420 | const char *t = s + 3; |
603a98b0 IZ |
2421 | |
2422 | while (*t && isSPACE(*t)) | |
2423 | ++t; | |
943bbd07 | 2424 | if (!*t && (PerlLIO_dup2(1,2) != -1)) { |
603a98b0 IZ |
2425 | s[-2] = '\0'; |
2426 | break; | |
2427 | } | |
2428 | } | |
a687059c | 2429 | doshell: |
b35112e7 | 2430 | PERL_FPU_PRE_EXEC |
738ab09f | 2431 | PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char *)NULL); |
b35112e7 | 2432 | PERL_FPU_POST_EXEC |
a0f2c8ec | 2433 | S_exec_failed(aTHX_ PL_sh_path, fd, do_report); |
282fc0b3 | 2434 | goto leave; |
a687059c LW |
2435 | } |
2436 | } | |
748a9306 | 2437 | |
282fc0b3 Z |
2438 | Newx(argv, (s - cmd) / 2 + 2, const char*); |
2439 | SAVEFREEPV(argv); | |
2440 | cmd = savepvn(cmd, s-cmd); | |
2441 | SAVEFREEPV(cmd); | |
2442 | a = argv; | |
2443 | for (s = cmd; *s;) { | |
294b3b39 AL |
2444 | while (isSPACE(*s)) |
2445 | s++; | |
a687059c LW |
2446 | if (*s) |
2447 | *(a++) = s; | |
294b3b39 AL |
2448 | while (*s && !isSPACE(*s)) |
2449 | s++; | |
a687059c LW |
2450 | if (*s) |
2451 | *s++ = '\0'; | |
2452 | } | |
6136c704 | 2453 | *a = NULL; |
282fc0b3 | 2454 | if (argv[0]) { |
b35112e7 | 2455 | PERL_FPU_PRE_EXEC |
282fc0b3 | 2456 | PerlProc_execvp(argv[0],EXEC_ARGV_CAST(argv)); |
b35112e7 | 2457 | PERL_FPU_POST_EXEC |
282fc0b3 | 2458 | if (errno == ENOEXEC) /* for system V NIH syndrome */ |
a687059c | 2459 | goto doshell; |
282fc0b3 | 2460 | S_exec_failed(aTHX_ argv[0], fd, do_report); |
a687059c | 2461 | } |
282fc0b3 Z |
2462 | leave: |
2463 | LEAVE; | |
738ab09f | 2464 | return FALSE; |
a687059c LW |
2465 | } |
2466 | ||
6890e559 | 2467 | #endif /* OS2 || WIN32 */ |
760ac839 | 2468 | |
79072805 | 2469 | I32 |
5aaab254 | 2470 | Perl_apply(pTHX_ I32 type, SV **mark, SV **sp) |
a687059c | 2471 | { |
eb578fdb KW |
2472 | I32 val; |
2473 | I32 tot = 0; | |
4634a855 | 2474 | const char *const what = PL_op_name[type]; |
5c144d81 | 2475 | const char *s; |
84c7b88c | 2476 | STRLEN len; |
890ce7af | 2477 | SV ** const oldmark = mark; |
885b4b39 | 2478 | bool killgp = FALSE; |
a687059c | 2479 | |
7918f24d NC |
2480 | PERL_ARGS_ASSERT_APPLY; |
2481 | ||
9a9b5ec9 DM |
2482 | PERL_UNUSED_VAR(what); /* may not be used depending on compile options */ |
2483 | ||
1444765e | 2484 | /* Doing this ahead of the switch statement preserves the old behaviour, |
a3815e44 | 2485 | where attempting to use kill as a taint test would fail on |
1444765e NC |
2486 | platforms where kill was not defined. */ |
2487 | #ifndef HAS_KILL | |
2488 | if (type == OP_KILL) | |
4634a855 | 2489 | Perl_die(aTHX_ PL_no_func, what); |
1444765e NC |
2490 | #endif |
2491 | #ifndef HAS_CHOWN | |
2492 | if (type == OP_CHOWN) | |
4634a855 | 2493 | Perl_die(aTHX_ PL_no_func, what); |
1444765e NC |
2494 | #endif |
2495 | ||
2496 | ||
20408e3c | 2497 | #define APPLY_TAINT_PROPER() \ |
3280af22 | 2498 | STMT_START { \ |
284167a5 | 2499 | if (TAINT_get) { TAINT_PROPER(what); } \ |
873ef191 | 2500 | } STMT_END |
20408e3c GS |
2501 | |
2502 | /* This is a first heuristic; it doesn't catch tainting magic. */ | |
284167a5 | 2503 | if (TAINTING_get) { |
463ee0b2 | 2504 | while (++mark <= sp) { |
bbce6d69 | 2505 | if (SvTAINTED(*mark)) { |
2506 | TAINT; | |
2507 | break; | |
2508 | } | |
463ee0b2 LW |
2509 | } |
2510 | mark = oldmark; | |
2511 | } | |
a687059c | 2512 | switch (type) { |
79072805 | 2513 | case OP_CHMOD: |
20408e3c | 2514 | APPLY_TAINT_PROPER(); |
79072805 | 2515 | if (++mark <= sp) { |
4ea561bc | 2516 | val = SvIV(*mark); |
20408e3c GS |
2517 | APPLY_TAINT_PROPER(); |
2518 | tot = sp - mark; | |
79072805 | 2519 | while (++mark <= sp) { |
c4aca7d0 | 2520 | GV* gv; |
2ea1cce7 | 2521 | if ((gv = MAYBE_DEREF_GV(*mark))) { |
c4aca7d0 GA |
2522 | if (GvIO(gv) && IoIFP(GvIOp(gv))) { |
2523 | #ifdef HAS_FCHMOD | |
375ed12a | 2524 | int fd = PerlIO_fileno(IoIFP(GvIOn(gv))); |
c4aca7d0 | 2525 | APPLY_TAINT_PROPER(); |
375ed12a JH |
2526 | if (fd < 0) { |
2527 | SETERRNO(EBADF,RMS_IFI); | |
2528 | tot--; | |
2529 | } else if (fchmod(fd, val)) | |
2530 | tot--; | |
c4aca7d0 | 2531 | #else |
b9c6780e | 2532 | Perl_die(aTHX_ PL_no_func, "fchmod"); |
c4aca7d0 GA |
2533 | #endif |
2534 | } | |
2535 | else { | |
8334cae6 | 2536 | SETERRNO(EBADF,RMS_IFI); |
c4aca7d0 GA |
2537 | tot--; |
2538 | } | |
2539 | } | |
c4aca7d0 | 2540 | else { |
41188aa0 | 2541 | const char *name = SvPV_nomg_const(*mark, len); |
c4aca7d0 | 2542 | APPLY_TAINT_PROPER(); |
41188aa0 | 2543 | if (!IS_SAFE_PATHNAME(name, len, "chmod") || |
c8028aa6 TC |
2544 | PerlLIO_chmod(name, val)) { |
2545 | tot--; | |
2546 | } | |
c4aca7d0 | 2547 | } |
a687059c LW |
2548 | } |
2549 | } | |
2550 | break; | |
fe14fcc3 | 2551 | #ifdef HAS_CHOWN |
79072805 | 2552 | case OP_CHOWN: |
20408e3c | 2553 | APPLY_TAINT_PROPER(); |
79072805 | 2554 | if (sp - mark > 2) { |
eb578fdb | 2555 | I32 val2; |
463ee0b2 LW |
2556 | val = SvIVx(*++mark); |
2557 | val2 = SvIVx(*++mark); | |
20408e3c | 2558 | APPLY_TAINT_PROPER(); |
a0d0e21e | 2559 | tot = sp - mark; |
79072805 | 2560 | while (++mark <= sp) { |
c4aca7d0 | 2561 | GV* gv; |
2ea1cce7 | 2562 | if ((gv = MAYBE_DEREF_GV(*mark))) { |
c4aca7d0 GA |
2563 | if (GvIO(gv) && IoIFP(GvIOp(gv))) { |
2564 | #ifdef HAS_FCHOWN | |
375ed12a | 2565 | int fd = PerlIO_fileno(IoIFP(GvIOn(gv))); |
c4aca7d0 | 2566 | APPLY_TAINT_PROPER(); |
375ed12a | 2567 | if (fd < 0) { |
dd1dbff0 | 2568 | SETERRNO(EBADF,RMS_IFI); |
f95ba548 | 2569 | tot--; |
375ed12a | 2570 | } else if (fchown(fd, val, val2)) |
c4aca7d0 GA |
2571 | tot--; |
2572 | #else | |
b9c6780e | 2573 | Perl_die(aTHX_ PL_no_func, "fchown"); |
c4aca7d0 GA |
2574 | #endif |
2575 | } | |
2576 | else { | |
8334cae6 | 2577 | SETERRNO(EBADF,RMS_IFI); |
c4aca7d0 GA |
2578 | tot--; |
2579 | } | |
2580 | } | |
c4aca7d0 | 2581 | else { |
41188aa0 | 2582 | const char *name = SvPV_nomg_const(*mark, len); |
c4aca7d0 | 2583 | APPLY_TAINT_PROPER(); |
41188aa0 | 2584 | if (!IS_SAFE_PATHNAME(name, len, "chown") || |
c8028aa6 | 2585 | PerlLIO_chown(name, val, val2)) { |
c4aca7d0 | 2586 | tot--; |
c8028aa6 | 2587 | } |
c4aca7d0 | 2588 | } |
a687059c LW |
2589 | } |
2590 | } | |
2591 | break; | |
b1248f16 | 2592 | #endif |
a1d180c4 | 2593 | /* |
dd64f1c3 AD |
2594 | XXX Should we make lchown() directly available from perl? |
2595 | For now, we'll let Configure test for HAS_LCHOWN, but do | |
2596 | nothing in the core. | |
2597 | --AD 5/1998 | |
2598 | */ | |
fe14fcc3 | 2599 | #ifdef HAS_KILL |
79072805 | 2600 | case OP_KILL: |
20408e3c | 2601 | APPLY_TAINT_PROPER(); |
55497cff | 2602 | if (mark == sp) |
2603 | break; | |
84c7b88c | 2604 | s = SvPVx_const(*++mark, len); |
c2fd40cb DM |
2605 | if (*s == '-' && isALPHA(s[1])) |
2606 | { | |
2607 | s++; | |
2608 | len--; | |
885b4b39 | 2609 | killgp = TRUE; |
c2fd40cb | 2610 | } |
e02bfb16 | 2611 | if (isALPHA(*s)) { |
84c7b88c | 2612 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') { |
79072805 | 2613 | s += 3; |
84c7b88c BF |
2614 | len -= 3; |
2615 | } | |
2616 | if ((val = whichsig_pvn(s, len)) < 0) | |
147e3846 KW |
2617 | Perl_croak(aTHX_ "Unrecognized signal name \"%" SVf "\"", |
2618 | SVfARG(*mark)); | |
79072805 LW |
2619 | } |
2620 | else | |
c2fd40cb | 2621 | { |
4ea561bc | 2622 | val = SvIV(*mark); |
c2fd40cb DM |
2623 | if (val < 0) |
2624 | { | |
885b4b39 | 2625 | killgp = TRUE; |
c2fd40cb DM |
2626 | val = -val; |
2627 | } | |
2628 | } | |
20408e3c GS |
2629 | APPLY_TAINT_PROPER(); |
2630 | tot = sp - mark; | |
fbcd93f0 | 2631 | |
c2fd40cb | 2632 | while (++mark <= sp) { |
60082291 | 2633 | Pid_t proc; |
c2fd40cb | 2634 | SvGETMAGIC(*mark); |
60082291 | 2635 | if (!(SvNIOK(*mark) || looks_like_number(*mark))) |
c2fd40cb DM |
2636 | Perl_croak(aTHX_ "Can't kill a non-numeric process ID"); |
2637 | proc = SvIV_nomg(*mark); | |
c2fd40cb | 2638 | APPLY_TAINT_PROPER(); |
111f73b5 DM |
2639 | #ifdef HAS_KILLPG |
2640 | /* use killpg in preference, as the killpg() wrapper for Win32 | |
2641 | * understands process groups, but the kill() wrapper doesn't */ | |
2642 | if (killgp ? PerlProc_killpg(proc, val) | |
2643 | : PerlProc_kill(proc, val)) | |
2644 | #else | |
2645 | if (PerlProc_kill(killgp ? -proc: proc, val)) | |
2646 | #endif | |
c2fd40cb | 2647 | tot--; |
a687059c | 2648 | } |
8165faea | 2649 | PERL_ASYNC_CHECK(); |
a687059c | 2650 | break; |
b1248f16 | 2651 | #endif |
79072805 | 2652 | case OP_UNLINK: |
20408e3c | 2653 | APPLY_TAINT_PROPER(); |
79072805 LW |
2654 | tot = sp - mark; |
2655 | while (++mark <= sp) { | |
41188aa0 | 2656 | s = SvPV_const(*mark, len); |
20408e3c | 2657 | APPLY_TAINT_PROPER(); |
41188aa0 | 2658 | if (!IS_SAFE_PATHNAME(s, len, "unlink")) { |
c8028aa6 TC |
2659 | tot--; |
2660 | } | |
f0d85c30 | 2661 | else if (PL_unsafe) { |
b8ffc8df | 2662 | if (UNLINK(s)) |
5cdd1fc2 | 2663 | { |
a687059c | 2664 | tot--; |
5cdd1fc2 AB |
2665 | } |
2666 | #if defined(__amigaos4__) && defined(NEWLIB) | |
2667 | else | |
2668 | { | |
2669 | /* Under AmigaOS4 unlink only 'fails' if the | |
2670 | * filename is invalid. It may not remove the file | |
2671 | * if it's locked, so check if it's still around. */ | |
2672 | if ((access(s,F_OK) != -1)) | |
2673 | { | |
2674 | tot--; | |
2675 | } | |
2676 | } | |
2677 | #endif | |
a687059c LW |
2678 | } |
2679 | else { /* don't let root wipe out directories without -U */ | |
45a23732 DD |
2680 | Stat_t statbuf; |
2681 | if (PerlLIO_lstat(s, &statbuf) < 0) | |
1dcae8b8 | 2682 | tot--; |
45a23732 | 2683 | else if (S_ISDIR(statbuf.st_mode)) { |
cd52bc19 | 2684 | SETERRNO(EISDIR, SS_NOPRIV); |
45a23732 | 2685 | tot--; |
1dcae8b8 | 2686 | } |
a687059c | 2687 | else { |
b8ffc8df | 2688 | if (UNLINK(s)) |
5cdd1fc2 AB |
2689 | { |
2690 | tot--; | |
2691 | } | |
2692 | #if defined(__amigaos4__) && defined(NEWLIB) | |
2693 | else | |
2694 | { | |
2695 | /* Under AmigaOS4 unlink only 'fails' if the filename is invalid */ | |
2696 | /* It may not remove the file if it's Locked, so check if it's still */ | |
2697 | /* arround */ | |
2698 | if((access(s,F_OK) != -1)) | |
2699 | { | |
2700 | tot--; | |
2701 | } | |
2702 | } | |
2703 | #endif | |
a687059c LW |
2704 | } |
2705 | } | |
2706 | } | |
2707 | break; | |
e96b369d | 2708 | #if defined(HAS_UTIME) || defined(HAS_FUTIMES) |
79072805 | 2709 | case OP_UTIME: |
20408e3c | 2710 | APPLY_TAINT_PROPER(); |
79072805 | 2711 | if (sp - mark > 2) { |
e96b369d GA |
2712 | #if defined(HAS_FUTIMES) |
2713 | struct timeval utbuf[2]; | |
2714 | void *utbufp = utbuf; | |
2715 | #elif defined(I_UTIME) || defined(VMS) | |
663a0e37 | 2716 | struct utimbuf utbuf; |
07409e01 | 2717 | struct utimbuf *utbufp = &utbuf; |
663a0e37 | 2718 | #else |
a687059c | 2719 | struct { |
dd2821f6 GS |
2720 | Time_t actime; |
2721 | Time_t modtime; | |
a687059c | 2722 | } utbuf; |
07409e01 | 2723 | void *utbufp = &utbuf; |
663a0e37 | 2724 | #endif |
a687059c | 2725 | |
0bcc34c2 AL |
2726 | SV* const accessed = *++mark; |
2727 | SV* const modified = *++mark; | |
c6f7b413 | 2728 | |
6ec06612 SB |
2729 | /* Be like C, and if both times are undefined, let the C |
2730 | * library figure out what to do. This usually means | |
2731 | * "current time". */ | |
c6f7b413 RS |
2732 | |
2733 | if ( accessed == &PL_sv_undef && modified == &PL_sv_undef ) | |
6ec06612 SB |
2734 | utbufp = NULL; |
2735 | else { | |
2736 | Zero(&utbuf, sizeof utbuf, char); | |
e96b369d | 2737 | #ifdef HAS_FUTIMES |
4ea561bc | 2738 | utbuf[0].tv_sec = (long)SvIV(accessed); /* time accessed */ |
e96b369d | 2739 | utbuf[0].tv_usec = 0; |
4ea561bc | 2740 | utbuf[1].tv_sec = (long)SvIV(modified); /* time modified */ |
e96b369d GA |
2741 | utbuf[1].tv_usec = 0; |
2742 | #elif defined(BIG_TIME) | |
4ea561bc NC |
2743 | utbuf.actime = (Time_t)SvNV(accessed); /* time accessed */ |
2744 | utbuf.modtime = (Time_t)SvNV(modified); /* time modified */ | |
517844ec | 2745 | #else |
4ea561bc NC |
2746 | utbuf.actime = (Time_t)SvIV(accessed); /* time accessed */ |
2747 | utbuf.modtime = (Time_t)SvIV(modified); /* time modified */ | |
517844ec | 2748 | #endif |
6ec06612 | 2749 | } |
4373e329 | 2750 | APPLY_TAINT_PROPER(); |
79072805 LW |
2751 | tot = sp - mark; |
2752 | while (++mark <= sp) { | |
e96b369d | 2753 | GV* gv; |
64617da9 | 2754 | if ((gv = MAYBE_DEREF_GV(*mark))) { |
e96b369d GA |
2755 | if (GvIO(gv) && IoIFP(GvIOp(gv))) { |
2756 | #ifdef HAS_FUTIMES | |
375ed12a | 2757 | int fd = PerlIO_fileno(IoIFP(GvIOn(gv))); |
e96b369d | 2758 | APPLY_TAINT_PROPER(); |
375ed12a JH |
2759 | if (fd < 0) { |
2760 | SETERRNO(EBADF,RMS_IFI); | |
2761 | tot--; | |
2762 | } else if (futimes(fd, (struct timeval *) utbufp)) | |
e96b369d GA |
2763 | tot--; |
2764 | #else | |
2765 | Perl_die(aTHX_ PL_no_func, "futimes"); | |
2766 | #endif | |
2767 | } | |
2768 | else { | |
2769 | tot--; | |
2770 | } | |
2771 | } | |
e96b369d | 2772 | else { |
41188aa0 | 2773 | const char * const name = SvPV_nomg_const(*mark, len); |
e96b369d | 2774 | APPLY_TAINT_PROPER(); |
41188aa0 | 2775 | if (!IS_SAFE_PATHNAME(name, len, "utime")) { |
c8028aa6 TC |
2776 | tot--; |
2777 | } | |
2778 | else | |
e96b369d | 2779 | #ifdef HAS_FUTIMES |
8b7231d9 | 2780 | if (utimes(name, (struct timeval *)utbufp)) |
e96b369d GA |
2781 | #else |
2782 | if (PerlLIO_utime(name, utbufp)) | |
2783 | #endif | |
2784 | tot--; | |
2785 | } | |
2786 | ||
a687059c | 2787 | } |
a687059c LW |
2788 | } |
2789 | else | |
79072805 | 2790 | tot = 0; |
a687059c | 2791 | break; |
a0d0e21e | 2792 | #endif |
a687059c LW |
2793 | } |
2794 | return tot; | |
20408e3c | 2795 | |
20408e3c | 2796 | #undef APPLY_TAINT_PROPER |
a687059c LW |
2797 | } |
2798 | ||
bd93adf5 | 2799 | /* Do the permissions in *statbufp allow some operation? */ |
a0d0e21e | 2800 | #ifndef VMS /* VMS' cando is in vms.c */ |
7f4774ae | 2801 | bool |
5aaab254 | 2802 | Perl_cando(pTHX_ Mode_t mode, bool effective, const Stat_t *statbufp) |
ae1951c1 NC |
2803 | /* effective is a flag, true for EUID, or for checking if the effective gid |
2804 | * is in the list of groups returned from getgroups(). | |
2805 | */ | |
a687059c | 2806 | { |
7918f24d | 2807 | PERL_ARGS_ASSERT_CANDO; |
81611534 | 2808 | PERL_UNUSED_CONTEXT; |
7918f24d | 2809 | |
bee1dbe2 | 2810 | #ifdef DOSISH |
fe14fcc3 LW |
2811 | /* [Comments and code from Len Reed] |
2812 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write | |
2813 | * to write-protected files. The execute permission bit is set | |
486ec47a | 2814 | * by the Microsoft C library stat() function for the following: |
fe14fcc3 LW |
2815 | * .exe files |
2816 | * .com files | |
2817 | * .bat files | |
2818 | * directories | |
2819 | * All files and directories are readable. | |
2820 | * Directories and special files, e.g. "CON", cannot be | |
2821 | * write-protected. | |
2822 | * [Comment by Tom Dinger -- a directory can have the write-protect | |
2823 | * bit set in the file system, but DOS permits changes to | |
2824 | * the directory anyway. In addition, all bets are off | |
2825 | * here for networked software, such as Novell and | |
2826 | * Sun's PC-NFS.] | |
2827 | */ | |
2828 | ||
bee1dbe2 LW |
2829 | /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat |
2830 | * too so it will actually look into the files for magic numbers | |
2831 | */ | |
8298454c | 2832 | return cBOOL(mode & statbufp->st_mode); |
fe14fcc3 | 2833 | |
55497cff | 2834 | #else /* ! DOSISH */ |
b595cd4b RU |
2835 | # ifdef __CYGWIN__ |
2836 | if (ingroup(544,effective)) { /* member of Administrators */ | |
2837 | # else | |
985213f2 | 2838 | if ((effective ? PerlProc_geteuid() : PerlProc_getuid()) == 0) { /* root is special */ |
b595cd4b | 2839 | # endif |
7f4774ae | 2840 | if (mode == S_IXUSR) { |
c623bd54 | 2841 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) |
a687059c LW |
2842 | return TRUE; |
2843 | } | |
2844 | else | |
2845 | return TRUE; /* root reads and writes anything */ | |
2846 | return FALSE; | |
2847 | } | |
985213f2 | 2848 | if (statbufp->st_uid == (effective ? PerlProc_geteuid() : PerlProc_getuid()) ) { |
7f4774ae | 2849 | if (statbufp->st_mode & mode) |
a687059c LW |
2850 | return TRUE; /* ok as "user" */ |
2851 | } | |
d8eceb89 | 2852 | else if (ingroup(statbufp->st_gid,effective)) { |
7f4774ae | 2853 | if (statbufp->st_mode & mode >> 3) |
a687059c LW |
2854 | return TRUE; /* ok as "group" */ |
2855 | } | |
7f4774ae | 2856 | else if (statbufp->st_mode & mode >> 6) |
a687059c LW |
2857 | return TRUE; /* ok as "other" */ |
2858 | return FALSE; | |
55497cff | 2859 | #endif /* ! DOSISH */ |
a687059c | 2860 | } |
a0d0e21e | 2861 | #endif /* ! VMS */ |
a687059c | 2862 | |
1f676739 | 2863 | static bool |
0da8eb3a | 2864 | S_ingroup(pTHX_ Gid_t testgid, bool effective) |
a687059c | 2865 | { |
81611534 JH |
2866 | #ifndef PERL_IMPLICIT_SYS |
2867 | /* PERL_IMPLICIT_SYS like Win32: getegid() etc. require the context. */ | |
2868 | PERL_UNUSED_CONTEXT; | |
2869 | #endif | |
985213f2 | 2870 | if (testgid == (effective ? PerlProc_getegid() : PerlProc_getgid())) |
a687059c | 2871 | return TRUE; |
fe14fcc3 | 2872 | #ifdef HAS_GETGROUPS |
a687059c | 2873 | { |
331b57bc | 2874 | Groups_t *gary = NULL; |
79072805 | 2875 | I32 anum; |
331b57bc | 2876 | bool rc = FALSE; |
a687059c | 2877 | |
331b57bc | 2878 | anum = getgroups(0, gary); |
375ed12a JH |
2879 | if (anum > 0) { |
2880 | Newx(gary, anum, Groups_t); | |
2881 | anum = getgroups(anum, gary); | |
2882 | while (--anum >= 0) | |
2883 | if (gary[anum] == testgid) { | |
2884 | rc = TRUE; | |
2885 | break; | |
2886 | } | |
331b57bc | 2887 | |
375ed12a JH |
2888 | Safefree(gary); |
2889 | } | |
331b57bc | 2890 | return rc; |
a687059c | 2891 | } |
c685562b | 2892 | #else |
a687059c | 2893 | return FALSE; |
cd39f2b6 | 2894 | #endif |
a687059c | 2895 | } |
c2ab57d4 | 2896 | |
fe14fcc3 | 2897 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 | 2898 | |
79072805 | 2899 | I32 |
864dbfa3 | 2900 | Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp) |
c2ab57d4 | 2901 | { |
0bcc34c2 | 2902 | const key_t key = (key_t)SvNVx(*++mark); |
c3312966 | 2903 | SV *nsv = optype == OP_MSGGET ? NULL : *++mark; |
6867be6d | 2904 | const I32 flags = SvIVx(*++mark); |
294a48e9 | 2905 | |
7918f24d | 2906 | PERL_ARGS_ASSERT_DO_IPCGET; |
294a48e9 | 2907 | PERL_UNUSED_ARG(sp); |
c2ab57d4 | 2908 | |
748a9306 | 2909 | SETERRNO(0,0); |
c2ab57d4 LW |
2910 | switch (optype) |
2911 | { | |
fe14fcc3 | 2912 | #ifdef HAS_MSG |
79072805 | 2913 | case OP_MSGGET: |
c2ab57d4 | 2914 | return msgget(key, flags); |
e5d73d77 | 2915 | #endif |
fe14fcc3 | 2916 | #ifdef HAS_SEM |
79072805 | 2917 | case OP_SEMGET: |
c3312966 | 2918 | return semget(key, (int) SvIV(nsv), flags); |
e5d73d77 | 2919 | #endif |
fe14fcc3 | 2920 | #ifdef HAS_SHM |
79072805 | 2921 | case OP_SHMGET: |
c3312966 | 2922 | return shmget(key, (size_t) SvUV(nsv), flags); |
e5d73d77 | 2923 | #endif |
fe14fcc3 | 2924 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 2925 | default: |
fe13d51d | 2926 | /* diag_listed_as: msg%s not implemented */ |
cea2e8a9 | 2927 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
e5d73d77 | 2928 | #endif |
c2ab57d4 LW |
2929 | } |
2930 | return -1; /* should never happen */ | |
2931 | } | |
2932 | ||
79072805 | 2933 | I32 |
864dbfa3 | 2934 | Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp) |
c2ab57d4 | 2935 | { |
c2ab57d4 | 2936 | char *a; |
a0d0e21e | 2937 | I32 ret = -1; |
6867be6d | 2938 | const I32 id = SvIVx(*++mark); |
95b63a38 | 2939 | #ifdef Semctl |
6867be6d | 2940 | const I32 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0; |
95b63a38 | 2941 | #endif |
6867be6d | 2942 | const I32 cmd = SvIVx(*++mark); |
0bcc34c2 AL |
2943 | SV * const astr = *++mark; |
2944 | STRLEN infosize = 0; | |
2945 | I32 getinfo = (cmd == IPC_STAT); | |
c2ab57d4 | 2946 | |
7918f24d | 2947 | PERL_ARGS_ASSERT_DO_IPCCTL; |
0bcc34c2 | 2948 | PERL_UNUSED_ARG(sp); |
c2ab57d4 LW |
2949 | |
2950 | switch (optype) | |
2951 | { | |
fe14fcc3 | 2952 | #ifdef HAS_MSG |
79072805 | 2953 | case OP_MSGCTL: |
c2ab57d4 LW |
2954 | if (cmd == IPC_STAT || cmd == IPC_SET) |
2955 | infosize = sizeof(struct msqid_ds); | |
2956 | break; | |
e5d73d77 | 2957 | #endif |
fe14fcc3 | 2958 | #ifdef HAS_SHM |
79072805 | 2959 | case OP_SHMCTL: |
c2ab57d4 LW |
2960 | if (cmd == IPC_STAT || cmd == IPC_SET) |
2961 | infosize = sizeof(struct shmid_ds); | |
2962 | break; | |
e5d73d77 | 2963 | #endif |
fe14fcc3 | 2964 | #ifdef HAS_SEM |
79072805 | 2965 | case OP_SEMCTL: |
39398f3f | 2966 | #ifdef Semctl |
c2ab57d4 LW |
2967 | if (cmd == IPC_STAT || cmd == IPC_SET) |
2968 | infosize = sizeof(struct semid_ds); | |
2969 | else if (cmd == GETALL || cmd == SETALL) | |
2970 | { | |
8e591e46 | 2971 | struct semid_ds semds; |
bd89102f | 2972 | union semun semun; |
e6f0bdd6 GS |
2973 | #ifdef EXTRA_F_IN_SEMUN_BUF |
2974 | semun.buff = &semds; | |
2975 | #else | |
84902520 | 2976 | semun.buf = &semds; |
e6f0bdd6 | 2977 | #endif |
c2ab57d4 | 2978 | getinfo = (cmd == GETALL); |
9b89d93d GB |
2979 | if (Semctl(id, 0, IPC_STAT, semun) == -1) |
2980 | return -1; | |
6e21c824 LW |
2981 | infosize = semds.sem_nsems * sizeof(short); |
2982 | /* "short" is technically wrong but much more portable | |
2983 | than guessing about u_?short(_t)? */ | |
c2ab57d4 | 2984 | } |
39398f3f | 2985 | #else |
fe13d51d | 2986 | /* diag_listed_as: sem%s not implemented */ |
cea2e8a9 | 2987 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
39398f3f | 2988 | #endif |
c2ab57d4 | 2989 | break; |
e5d73d77 | 2990 | #endif |
fe14fcc3 | 2991 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 | 2992 | default: |
fe13d51d | 2993 | /* diag_listed_as: shm%s not implemented */ |
cea2e8a9 | 2994 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
e5d73d77 | 2995 | #endif |
c2ab57d4 LW |
2996 | } |
2997 | ||
2998 | if (infosize) | |
2999 | { | |
3000 | if (getinfo) | |
3001 | { | |
d43c116b TC |
3002 | /* we're not using the value here, so don't SvPVanything */ |
3003 | SvUPGRADE(astr, SVt_PV); | |
3004 | SvGETMAGIC(astr); | |
3005 | if (SvTHINKFIRST(astr)) | |
3006 | sv_force_normal_flags(astr, 0); | |
a0d0e21e | 3007 | a = SvGROW(astr, infosize+1); |
c2ab57d4 LW |
3008 | } |
3009 | else | |
3010 | { | |
93524f2b | 3011 | STRLEN len; |
7274dea4 | 3012 | a = SvPVbyte(astr, len); |
463ee0b2 | 3013 | if (len != infosize) |
cea2e8a9 | 3014 | Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld", |
4ec43091 JH |
3015 | PL_op_desc[optype], |
3016 | (unsigned long)len, | |
3017 | (long)infosize); | |
c2ab57d4 LW |
3018 | } |
3019 | } | |
3020 | else | |
3021 | { | |
d43c116b TC |
3022 | /* We historically treat this as a pointer if we don't otherwise recognize |
3023 | the op, but for many ops the value is simply ignored anyway, so | |
3024 | don't warn on undef. | |
3025 | */ | |
3026 | SvGETMAGIC(astr); | |
3027 | if (SvOK(astr)) { | |
3028 | const IV i = SvIV_nomg(astr); | |
3029 | a = INT2PTR(char *,i); /* ouch */ | |
3030 | } | |
3031 | else { | |
3032 | a = NULL; | |
3033 | } | |
c2ab57d4 | 3034 | } |
748a9306 | 3035 | SETERRNO(0,0); |
c2ab57d4 LW |
3036 | switch (optype) |
3037 | { | |
fe14fcc3 | 3038 | #ifdef HAS_MSG |
79072805 | 3039 | case OP_MSGCTL: |
bee1dbe2 | 3040 | ret = msgctl(id, cmd, (struct msqid_ds *)a); |
c2ab57d4 | 3041 | break; |
e5d73d77 | 3042 | #endif |
fe14fcc3 | 3043 | #ifdef HAS_SEM |
bd89102f | 3044 | case OP_SEMCTL: { |
39398f3f | 3045 | #ifdef Semctl |
bd89102f AD |
3046 | union semun unsemds; |
3047 | ||
64d76282 BC |
3048 | if(cmd == SETVAL) { |
3049 | unsemds.val = PTR2nat(a); | |
3050 | } | |
3051 | else { | |
e6f0bdd6 | 3052 | #ifdef EXTRA_F_IN_SEMUN_BUF |
64d76282 | 3053 | unsemds.buff = (struct semid_ds *)a; |
e6f0bdd6 | 3054 | #else |
64d76282 | 3055 | unsemds.buf = (struct semid_ds *)a; |
e6f0bdd6 | 3056 | #endif |
64d76282 | 3057 | } |
bd89102f | 3058 | ret = Semctl(id, n, cmd, unsemds); |
39398f3f | 3059 | #else |
fe13d51d | 3060 | /* diag_listed_as: sem%s not implemented */ |
cea2e8a9 | 3061 | Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
39398f3f | 3062 | #endif |
bd89102f | 3063 | } |
c2ab57d4 | 3064 | break; |
e5d73d77 | 3065 | #endif |
fe14fcc3 | 3066 | #ifdef HAS_SHM |
79072805 | 3067 | case OP_SHMCTL: |
bee1dbe2 | 3068 | ret = shmctl(id, cmd, (struct shmid_ds *)a); |
c2ab57d4 | 3069 | break; |
e5d73d77 | 3070 | #endif |
c2ab57d4 LW |
3071 | } |
3072 | if (getinfo && ret >= 0) { | |
79072805 LW |
3073 | SvCUR_set(astr, infosize); |
3074 | *SvEND(astr) = '\0'; | |
d43c116b | 3075 | SvPOK_only(astr); |
a0d0e21e | 3076 | SvSETMAGIC(astr); |
c2ab57d4 LW |
3077 | } |
3078 | return ret; | |
3079 | } | |
3080 | ||
79072805 | 3081 | I32 |
864dbfa3 | 3082 | Perl_do_msgsnd(pTHX_ SV **mark, SV **sp) |
c2ab57d4 | 3083 | { |
fe14fcc3 | 3084 | #ifdef HAS_MSG |
463ee0b2 | 3085 | STRLEN len; |
6867be6d | 3086 | const I32 id = SvIVx(*++mark); |
0bcc34c2 AL |
3087 | SV * const mstr = *++mark; |
3088 | const I32 flags = SvIVx(*++mark); | |
aa058ea4 | 3089 | const char * const mbuf = SvPVbyte(mstr, len); |
0bcc34c2 AL |
3090 | const I32 msize = len - sizeof(long); |
3091 | ||
7918f24d | 3092 | PERL_ARGS_ASSERT_DO_MSGSND; |
890ce7af | 3093 | PERL_UNUSED_ARG(sp); |
c2ab57d4 | 3094 | |
0bcc34c2 | 3095 | if (msize < 0) |
cea2e8a9 | 3096 | Perl_croak(aTHX_ "Arg too short for msgsnd"); |
748a9306 | 3097 | SETERRNO(0,0); |
681fb693 JH |
3098 | if (id >= 0 && flags >= 0) { |
3099 | return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); | |
3100 | } else { | |
3101 | SETERRNO(EINVAL,LIB_INVARG); | |
3102 | return -1; | |
3103 | } | |
e5d73d77 | 3104 | #else |
2d51fa4d RGS |
3105 | PERL_UNUSED_ARG(sp); |
3106 | PERL_UNUSED_ARG(mark); | |
fe13d51d | 3107 | /* diag_listed_as: msg%s not implemented */ |
cea2e8a9 | 3108 | Perl_croak(aTHX_ "msgsnd not implemented"); |
7c522378 | 3109 | return -1; |
e5d73d77 | 3110 | #endif |
c2ab57d4 LW |
3111 | } |
3112 | ||
79072805 | 3113 | I32 |
864dbfa3 | 3114 | Perl_do_msgrcv(pTHX_ SV **mark, SV **sp) |
c2ab57d4 | 3115 | { |
fe14fcc3 | 3116 | #ifdef HAS_MSG |
c2ab57d4 LW |
3117 | char *mbuf; |
3118 | long mtype; | |
6867be6d | 3119 | I32 msize, flags, ret; |
6867be6d | 3120 | const I32 id = SvIVx(*++mark); |
0bcc34c2 | 3121 | SV * const mstr = *++mark; |
7918f24d NC |
3122 | |
3123 | PERL_ARGS_ASSERT_DO_MSGRCV; | |
890ce7af | 3124 | PERL_UNUSED_ARG(sp); |
79072805 | 3125 | |
c2e66d9e GS |
3126 | /* suppress warning when reading into undef var --jhi */ |
3127 | if (! SvOK(mstr)) | |
8062ff11 | 3128 | SvPVCLEAR(mstr); |
463ee0b2 LW |
3129 | msize = SvIVx(*++mark); |
3130 | mtype = (long)SvIVx(*++mark); | |
3131 | flags = SvIVx(*++mark); | |
93524f2b | 3132 | SvPV_force_nolen(mstr); |
a0d0e21e | 3133 | mbuf = SvGROW(mstr, sizeof(long)+msize+1); |
a1d180c4 | 3134 | |
748a9306 | 3135 | SETERRNO(0,0); |
d2607e1e JH |
3136 | if (id >= 0 && msize >= 0 && flags >= 0) { |
3137 | ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags); | |
3138 | } else { | |
3139 | SETERRNO(EINVAL,LIB_INVARG); | |
3140 | ret = -1; | |
3141 | } | |
c2ab57d4 | 3142 | if (ret >= 0) { |
79072805 | 3143 | SvCUR_set(mstr, sizeof(long)+ret); |
6987f443 | 3144 | SvPOK_only(mstr); |
79072805 | 3145 | *SvEND(mstr) = '\0'; |
41d6edb2 JH |
3146 | /* who knows who has been playing with this message? */ |
3147 | SvTAINTED_on(mstr); | |
c2ab57d4 LW |
3148 | } |
3149 | return ret; | |
e5d73d77 | 3150 | #else |
2d51fa4d RGS |
3151 | PERL_UNUSED_ARG(sp); |
3152 | PERL_UNUSED_ARG(mark); | |
fe13d51d | 3153 | /* diag_listed_as: msg%s not implemented */ |
cea2e8a9 | 3154 | Perl_croak(aTHX_ "msgrcv not implemented"); |
7c522378 | 3155 | return -1; |
e5d73d77 | 3156 | #endif |
c2ab57d4 LW |
3157 | } |
3158 | ||
79072805 | 3159 | I32 |
864dbfa3 | 3160 | Perl_do_semop(pTHX_ SV **mark, SV **sp) |
c2ab57d4 | 3161 | { |
fe14fcc3 | 3162 | #ifdef HAS_SEM |
463ee0b2 | 3163 | STRLEN opsize; |
6867be6d | 3164 | const I32 id = SvIVx(*++mark); |
0bcc34c2 | 3165 | SV * const opstr = *++mark; |
61f05872 | 3166 | const char * const opbuf = SvPVbyte(opstr, opsize); |
7918f24d NC |
3167 | |
3168 | PERL_ARGS_ASSERT_DO_SEMOP; | |
890ce7af | 3169 | PERL_UNUSED_ARG(sp); |
c2ab57d4 | 3170 | |
248ff010 NC |
3171 | if (opsize < 3 * SHORTSIZE |
3172 | || (opsize % (3 * SHORTSIZE))) { | |
93189314 | 3173 | SETERRNO(EINVAL,LIB_INVARG); |
c2ab57d4 LW |
3174 | return -1; |
3175 | } | |
748a9306 | 3176 | SETERRNO(0,0); |
248ff010 NC |
3177 | /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */ |
3178 | { | |
6867be6d | 3179 | const int nsops = opsize / (3 * sizeof (short)); |
248ff010 | 3180 | int i = nsops; |
0bcc34c2 | 3181 | short * const ops = (short *) opbuf; |
248ff010 NC |
3182 | short *o = ops; |
3183 | struct sembuf *temps, *t; | |
3184 | I32 result; | |
3185 | ||
a02a5408 | 3186 | Newx (temps, nsops, struct sembuf); |
248ff010 NC |
3187 | t = temps; |
3188 | while (i--) { | |
3189 | t->sem_num = *o++; | |
3190 | t->sem_op = *o++; | |
3191 | t->sem_flg = *o++; | |
3192 | t++; | |
3193 | } | |
3194 | result = semop(id, temps, nsops); | |
248ff010 NC |
3195 | Safefree(temps); |
3196 | return result; | |
3197 | } | |
e5d73d77 | 3198 | #else |
fe13d51d | 3199 | /* diag_listed_as: sem%s not implemented */ |
cea2e8a9 | 3200 | Perl_croak(aTHX_ "semop not implemented"); |
e5d73d77 | 3201 | #endif |
c2ab57d4 LW |
3202 | } |
3203 | ||
79072805 | 3204 | I32 |
864dbfa3 | 3205 | Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp) |
c2ab57d4 | 3206 | { |
fe14fcc3 | 3207 | #ifdef HAS_SHM |
4373e329 | 3208 | char *shm; |
c2ab57d4 | 3209 | struct shmid_ds shmds; |
6867be6d | 3210 | const I32 id = SvIVx(*++mark); |
0bcc34c2 AL |
3211 | SV * const mstr = *++mark; |
3212 | const I32 mpos = SvIVx(*++mark); | |
3213 | const I32 msize = SvIVx(*++mark); | |
7918f24d NC |
3214 | |
3215 | PERL_ARGS_ASSERT_DO_SHMIO; | |
890ce7af | 3216 | PERL_UNUSED_ARG(sp); |
c2ab57d4 | 3217 | |
748a9306 | 3218 | SETERRNO(0,0); |
c2ab57d4 LW |
3219 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
3220 | return -1; | |
7f39519f NC |
3221 | if (mpos < 0 || msize < 0 |
3222 | || (size_t)mpos + msize > (size_t)shmds.shm_segsz) { | |
93189314 | 3223 | SETERRNO(EFAULT,SS_ACCVIO); /* can't do as caller requested */ |
c2ab57d4 LW |
3224 | return -1; |
3225 | } | |
568fc267 JH |
3226 | if (id >= 0) { |
3227 | shm = (char *)shmat(id, NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0); | |
3228 | } else { | |
3229 | SETERRNO(EINVAL,LIB_INVARG); | |
3230 | return -1; | |
3231 | } | |
c2ab57d4 LW |
3232 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
3233 | return -1; | |
79072805 | 3234 | if (optype == OP_SHMREAD) { |
c8ae91a8 | 3235 | char *mbuf; |
9f538c04 | 3236 | /* suppress warning when reading into undef var (tchrist 3/Mar/00) */ |
b399897d CS |
3237 | SvGETMAGIC(mstr); |
3238 | SvUPGRADE(mstr, SVt_PV); | |
9f538c04 | 3239 | if (! SvOK(mstr)) |
8062ff11 | 3240 | SvPVCLEAR(mstr); |
af8ff727 | 3241 | SvPOK_only(mstr); |
bb7a0f54 | 3242 | mbuf = SvGROW(mstr, (STRLEN)msize+1); |
a0d0e21e | 3243 | |
bee1dbe2 | 3244 | Copy(shm + mpos, mbuf, msize, char); |
79072805 LW |
3245 | SvCUR_set(mstr, msize); |
3246 | *SvEND(mstr) = '\0'; | |
a0d0e21e | 3247 | SvSETMAGIC(mstr); |
d929ce6f JH |
3248 | /* who knows who has been playing with this shared memory? */ |
3249 | SvTAINTED_on(mstr); | |
c2ab57d4 LW |
3250 | } |
3251 | else { | |
93524f2b | 3252 | STRLEN len; |
c2ab57d4 | 3253 | |
0bcc9249 | 3254 | const char *mbuf = SvPVbyte(mstr, len); |
027aa12d | 3255 | const I32 n = ((I32)len > msize) ? msize : (I32)len; |
bee1dbe2 | 3256 | Copy(mbuf, shm + mpos, n, char); |
c2ab57d4 | 3257 | if (n < msize) |
bee1dbe2 | 3258 | memzero(shm + mpos + n, msize - n); |
c2ab57d4 LW |
3259 | } |
3260 | return shmdt(shm); | |
e5d73d77 | 3261 | #else |
fe13d51d | 3262 | /* diag_listed_as: shm%s not implemented */ |
cea2e8a9 | 3263 | Perl_croak(aTHX_ "shm I/O not implemented"); |
7c522378 | 3264 | return -1; |
e5d73d77 | 3265 | #endif |
c2ab57d4 LW |
3266 | } |
3267 | ||
fe14fcc3 | 3268 | #endif /* SYSV IPC */ |
4e35701f | 3269 | |
0d44d22b NC |
3270 | /* |
3271 | =for apidoc start_glob | |
3272 | ||
3273 | Function called by C<do_readline> to spawn a glob (or do the glob inside | |
154e47c8 | 3274 | perl on VMS). This code used to be inline, but now perl uses C<File::Glob> |
25047fde KW |
3275 | this glob starter is only used by miniperl during the build process, |
3276 | or when PERL_EXTERNAL_GLOB is defined. | |
75af9d73 | 3277 | Moving it away shrinks F<pp_hot.c>; shrinking F<pp_hot.c> helps speed perl up. |
fab3f3a7 | 3278 | |
0d44d22b NC |
3279 | =cut |
3280 | */ | |
3281 | ||
3282 | PerlIO * | |
3283 | Perl_start_glob (pTHX_ SV *tmpglob, IO *io) | |
3284 | { | |
561b68a9 | 3285 | SV * const tmpcmd = newSV(0); |
0d44d22b | 3286 | PerlIO *fp; |
41188aa0 TC |
3287 | STRLEN len; |
3288 | const char *s = SvPV(tmpglob, len); | |
7918f24d NC |
3289 | |
3290 | PERL_ARGS_ASSERT_START_GLOB; | |
3291 | ||
41188aa0 | 3292 | if (!IS_SAFE_SYSCALL(s, len, "pattern", "glob")) |
c8028aa6 TC |
3293 | return NULL; |
3294 | ||
0d44d22b NC |
3295 | ENTER; |
3296 | SAVEFREESV(tmpcmd); | |
3297 | #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */ | |
3298 | /* since spawning off a process is a real performance hit */ | |
dca5a913 | 3299 | |
1cc9774b CB |
3300 | PerlIO * |
3301 | Perl_vms_start_glob | |
3302 | (pTHX_ SV *tmpglob, | |
3303 | IO *io); | |
3304 | ||
49a7a762 | 3305 | fp = Perl_vms_start_glob(aTHX_ tmpglob, io); |
dca5a913 | 3306 | |
0d44d22b | 3307 | #else /* !VMS */ |
4009c3ff AC |
3308 | # ifdef DOSISH |
3309 | # if defined(OS2) | |
0d44d22b NC |
3310 | sv_setpv(tmpcmd, "for a in "); |
3311 | sv_catsv(tmpcmd, tmpglob); | |
f8db7d5b | 3312 | sv_catpvs(tmpcmd, "; do echo \"$a\\0\\c\"; done |"); |
4009c3ff | 3313 | # elif defined(DJGPP) |
0d44d22b NC |
3314 | sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */ |
3315 | sv_catsv(tmpcmd, tmpglob); | |
4009c3ff | 3316 | # else |
0d44d22b NC |
3317 | sv_setpv(tmpcmd, "perlglob "); |
3318 | sv_catsv(tmpcmd, tmpglob); | |
f8db7d5b | 3319 | sv_catpvs(tmpcmd, " |"); |
4009c3ff AC |
3320 | # endif |
3321 | # elif defined(CSH) | |
0d44d22b | 3322 | sv_setpvn(tmpcmd, PL_cshname, PL_cshlen); |
f8db7d5b | 3323 | sv_catpvs(tmpcmd, " -cf 'set nonomatch; glob "); |
0d44d22b | 3324 | sv_catsv(tmpcmd, tmpglob); |
f8db7d5b | 3325 | sv_catpvs(tmpcmd, "' 2>/dev/null |"); |
4009c3ff | 3326 | # else |
0d44d22b NC |
3327 | sv_setpv(tmpcmd, "echo "); |
3328 | sv_catsv(tmpcmd, tmpglob); | |
f8db7d5b | 3329 | sv_catpvs(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|"); |
4009c3ff | 3330 | # endif /* !DOSISH && !CSH */ |
93b2dae1 | 3331 | { |
acffc8af FC |
3332 | SV ** const svp = hv_fetchs(GvHVn(PL_envgv), "LS_COLORS", 0); |
3333 | if (svp && *svp) | |
3334 | save_helem_flags(GvHV(PL_envgv), | |
3335 | newSVpvs_flags("LS_COLORS", SVs_TEMP), svp, | |
3336 | SAVEf_SETMAGIC); | |
93b2dae1 | 3337 | } |
d5eb9a46 NC |
3338 | (void)do_open6(PL_last_in_gv, SvPVX_const(tmpcmd), SvCUR(tmpcmd), |
3339 | NULL, NULL, 0); | |
0d44d22b NC |
3340 | fp = IoIFP(io); |
3341 | #endif /* !VMS */ | |
3342 | LEAVE; | |
de7dabb6 TC |
3343 | |
3344 | if (!fp && ckWARN(WARN_GLOB)) { | |
3345 | Perl_warner(aTHX_ packWARN(WARN_GLOB), "glob failed (can't start child: %s)", | |
3346 | Strerror(errno)); | |
3347 | } | |
3348 | ||
0d44d22b NC |
3349 | return fp; |
3350 | } | |
66610fdd RGS |
3351 | |
3352 | /* | |
14d04a33 | 3353 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3354 | */ |