source: trunk/src/kash/shinstance.c@ 2022

Last change on this file since 2022 was 1785, checked in by bird, 17 years ago

kash: fixed signals. trace all wrapped system calls.
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File size: 20.3 KB
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1/* $Id: shinstance.c 1785 2008-09-14 17:31:16Z bird $ */
2/** @file
3 *
4 * The shell instance methods.
5 *
6 * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
7 *
8 *
9 * This file is part of kBuild.
10 *
11 * kBuild is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * kBuild is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with kBuild; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 *
25 */
26
27/*******************************************************************************
28* Header Files *
29*******************************************************************************/
30#include <string.h>
31#include <stdlib.h>
32#include <assert.h>
33#ifndef _MSC_VER
34# include <unistd.h>
35# include <pwd.h>
36extern char **environ;
37#endif
38#include "shinstance.h"
39
40
41/*******************************************************************************
42* Global Variables *
43*******************************************************************************/
44/** The mutex protecting the the globals and some shell instance members (sigs). */
45static shmtx g_sh_mtx;
46/** The root shell instance. */
47static shinstance *g_sh_root;
48/** The first shell instance. */
49static shinstance *g_sh_head;
50/** The last shell instance. */
51static shinstance *g_sh_tail;
52/** The number of shells. */
53static int g_num_shells;
54/** Per signal state for determining a common denominator.
55 * @remarks defaults and unmasked actions aren't counted. */
56struct shsigstate
57{
58 /** The current signal action. */
59#ifndef _MSC_VER
60 struct sigaction sa;
61#else
62 struct
63 {
64 void (*sa_handler)(int);
65 int sa_flags;
66 shsigset_t sa_mask;
67 } sa;
68#endif
69 /** The number of restarts (siginterrupt / SA_RESTART). */
70 int num_restart;
71 /** The number of ignore handlers. */
72 int num_ignore;
73 /** The number of specific handlers. */
74 int num_specific;
75 /** The number of threads masking it. */
76 int num_masked;
77} g_sig_state[NSIG];
78
79
80
81typedef struct shmtxtmp { int i; } shmtxtmp;
82
83int shmtx_init(shmtx *pmtx)
84{
85 pmtx->b[0] = 0;
86 return 0;
87}
88
89void shmtx_delete(shmtx *pmtx)
90{
91 pmtx->b[0] = 0;
92}
93
94void shmtx_enter(shmtx *pmtx, shmtxtmp *ptmp)
95{
96 pmtx->b[0] = 0;
97 ptmp->i = 0;
98}
99
100void shmtx_leave(shmtx *pmtx, shmtxtmp *ptmp)
101{
102 pmtx->b[0] = 0;
103 ptmp->i = 432;
104}
105
106
107/**
108 * Links the shell instance.
109 *
110 * @param psh The shell.
111 */
112static void sh_int_link(shinstance *psh)
113{
114 shmtxtmp tmp;
115 shmtx_enter(&g_sh_mtx, &tmp);
116
117 if (psh->rootshell)
118 g_sh_root = psh;
119
120 psh->next = NULL;
121 psh->prev = g_sh_tail;
122 if (g_sh_tail)
123 g_sh_tail->next = psh;
124 else
125 g_sh_tail = g_sh_head = psh;
126 g_sh_tail = psh;
127
128 g_num_shells++;
129
130 shmtx_leave(&g_sh_mtx, &tmp);
131}
132
133
134/**
135 * Unlink the shell instance.
136 *
137 * @param psh The shell.
138 */
139static void sh_int_unlink(shinstance *psh)
140{
141 shmtxtmp tmp;
142 shmtx_enter(&g_sh_mtx, &tmp);
143
144 g_num_shells--;
145
146 if (g_sh_tail == psh)
147 g_sh_tail = psh->prev;
148 else
149 psh->next->prev = psh->prev;
150
151 if (g_sh_head == psh)
152 g_sh_head = psh->next;
153 else
154 psh->prev->next = psh->next;
155
156 if (g_sh_root == psh)
157 g_sh_root = 0;
158
159 shmtx_leave(&g_sh_mtx, &tmp);
160}
161
162
163/**
164 * Creates a root shell instance.
165 *
166 * @param inherit The shell to inherit from. If NULL inherit from environment and such.
167 * @param argc The argument count.
168 * @param argv The argument vector.
169 *
170 * @returns pointer to root shell on success, NULL on failure.
171 */
172shinstance *sh_create_root_shell(shinstance *inherit, int argc, char **argv)
173{
174 shinstance *psh;
175 int i;
176
177 psh = calloc(sizeof(*psh), 1);
178 if (psh)
179 {
180 /* the special stuff. */
181#ifdef _MSC_VER
182 psh->pid = _getpid();
183#else
184 psh->pid = getpid();
185#endif
186 /*sh_sigemptyset(&psh->sigrestartset);*/
187 for (i = 0; i < NSIG; i++)
188 psh->sigactions[i].sh_handler = SH_SIG_UNK;
189
190 /* memalloc.c */
191 psh->stacknleft = MINSIZE;
192 psh->herefd = -1;
193 psh->stackp = &psh->stackbase;
194 psh->stacknxt = psh->stackbase.space;
195
196 /* input.c */
197 psh->plinno = 1;
198 psh->init_editline = 0;
199 psh->parsefile = &psh->basepf;
200
201 /* output.c */
202 psh->output.bufsize = OUTBUFSIZ;
203 psh->output.fd = 1;
204 psh->output.psh = psh;
205 psh->errout.bufsize = 100;
206 psh->errout.fd = 2;
207 psh->errout.psh = psh;
208 psh->memout.fd = MEM_OUT;
209 psh->memout.psh = psh;
210 psh->out1 = &psh->output;
211 psh->out2 = &psh->errout;
212
213 /* jobs.c */
214 psh->backgndpid = -1;
215#if JOBS
216 psh->curjob = -1;
217#else
218# error asdf
219#endif
220 psh->ttyfd = -1;
221
222 /* link it. */
223 sh_int_link(psh);
224
225 }
226 return psh;
227}
228
229
230char *sh_getenv(shinstance *psh, const char *var)
231{
232#ifdef SH_PURE_STUB_MODE
233 return NULL;
234#elif defined(SH_STUB_MODE)
235 (void)psh;
236 return getenv(var);
237#else
238#endif
239}
240
241char **sh_environ(shinstance *psh)
242{
243#ifdef SH_PURE_STUB_MODE
244 static char *s_null[2] = {0,0};
245 return &s_null[0];
246#elif defined(SH_STUB_MODE)
247 (void)psh;
248 return environ;
249#else
250#endif
251}
252
253const char *sh_gethomedir(shinstance *psh, const char *user)
254{
255#ifdef SH_PURE_STUB_MODE
256 return NULL;
257#elif defined(SH_STUB_MODE)
258 (void)psh;
259# ifdef _MSC_VER
260 return NULL;
261# else
262 struct passwd *pwd = getpwnam(user);
263 return pwd ? pwd->pw_dir : NULL;
264# endif
265#else
266#endif
267}
268
269/**
270 * Lazy initialization of a signal state, globally.
271 *
272 * @param psh The shell doing the lazy work.
273 * @param signo The signal (valid).
274 */
275static void sh_int_lazy_init_sigaction(shinstance *psh, int signo)
276{
277 if (psh->sigactions[signo].sh_handler == SH_SIG_UNK)
278 {
279 shmtxtmp tmp;
280 shmtx_enter(&g_sh_mtx, &tmp);
281
282 if (psh->sigactions[signo].sh_handler == SH_SIG_UNK)
283 {
284 shsigaction_t shold;
285 shinstance *cur;
286#ifndef _MSC_VER
287 struct sigaction old;
288 if (!sigaction(signo, NULL, &old))
289 {
290 /* convert */
291 shold.sh_flags = old.sa_flags;
292 shold.sh_mask = old.sa_mask;
293 if (old.sa_handler == SIG_DFL)
294 shold.sh_handler = SH_SIG_DFL;
295 else
296 {
297 assert(old.sa_handler == SIG_IGN);
298 shold.sh_handler = SH_SIG_IGN;
299 }
300 }
301 else
302#endif
303 {
304 /* fake */
305#ifndef _MSC_VER
306 assert(0);
307 old.sa_handler = SIG_DFL;
308 old.sa_flags = 0;
309 sigemptyset(&shold.sh_mask);
310 sigaddset(&shold.sh_mask, signo);
311#endif
312 shold.sh_flags = 0;
313 sh_sigemptyset(&shold.sh_mask);
314 sh_sigaddset(&shold.sh_mask, signo);
315 shold.sh_handler = SH_SIG_DFL;
316 }
317
318 /* update globals */
319#ifndef _MSC_VER
320 g_sig_state[signo].sa = old;
321#else
322 g_sig_state[signo].sa.sa_handler = SIG_DFL;
323 g_sig_state[signo].sa.sa_flags = 0;
324 g_sig_state[signo].sa.sa_mask = shold.sh_mask;
325#endif
326 TRACE2((psh, "sh_int_lazy_init_sigaction: signo=%d:%s sa_handler=%p sa_flags=%#x\n",
327 signo, sys_signame[signo], g_sig_state[signo].sa.sa_handler, g_sig_state[signo].sa.sa_flags));
328
329 /* update all shells */
330 for (cur = g_sh_head; cur; cur = cur->next)
331 {
332 assert(cur->sigactions[signo].sh_handler == SH_SIG_UNK);
333 cur->sigactions[signo] = shold;
334 }
335 }
336
337 shmtx_leave(&g_sh_mtx, &tmp);
338 }
339}
340
341
342/**
343 * Handler for external signals.
344 *
345 * @param signo The signal.
346 */
347static void sh_sig_common_handler(int signo)
348{
349 fprintf(stderr, "sh_sig_common_handler: signo=%d:%s\n", signo, sys_signame[signo]);
350}
351
352
353int sh_sigaction(shinstance *psh, int signo, const struct shsigaction *newp, struct shsigaction *oldp)
354{
355 if (newp)
356 TRACE2((psh, "sh_sigaction: signo=%d:%s newp=%p:{.sh_handler=%p, .sh_flags=%#x} oldp=%p\n",
357 signo, sys_signame[signo], newp, newp->sh_handler, newp->sh_flags, oldp));
358 else
359 TRACE2((psh, "sh_sigaction: signo=%d:%s newp=NULL oldp=%p\n", signo, sys_signame[signo], oldp));
360
361 /*
362 * Input validation.
363 */
364 if (signo >= NSIG || signo <= 0)
365 {
366 errno = EINVAL;
367 return -1;
368 }
369
370#ifdef SH_PURE_STUB_MODE
371 return -1;
372#else
373
374 /*
375 * Make sure our data is correct.
376 */
377 sh_int_lazy_init_sigaction(psh, signo);
378
379 /*
380 * Get the old one if requested.
381 */
382 if (oldp)
383 *oldp = psh->sigactions[signo];
384
385 /*
386 * Set the new one if it has changed.
387 *
388 * This will be attempted coordinated with the other signal handlers so
389 * that we can arrive at a common denominator.
390 */
391 if ( newp
392 && memcmp(&psh->sigactions[signo], newp, sizeof(*newp)))
393 {
394 shmtxtmp tmp;
395 shmtx_enter(&g_sh_mtx, &tmp);
396
397 /* Undo the accounting for the current entry. */
398 if (psh->sigactions[signo].sh_handler == SH_SIG_IGN)
399 g_sig_state[signo].num_ignore--;
400 else if (psh->sigactions[signo].sh_handler != SH_SIG_DFL)
401 g_sig_state[signo].num_specific--;
402 if (psh->sigactions[signo].sh_flags & SA_RESTART)
403 g_sig_state[signo].num_restart--;
404
405 /* Set the new entry. */
406 psh->sigactions[signo] = *newp;
407
408 /* Add the bits for the new action entry. */
409 if (psh->sigactions[signo].sh_handler == SH_SIG_IGN)
410 g_sig_state[signo].num_ignore++;
411 else if (psh->sigactions[signo].sh_handler != SH_SIG_DFL)
412 g_sig_state[signo].num_specific++;
413 if (psh->sigactions[signo].sh_flags & SA_RESTART)
414 g_sig_state[signo].num_restart++;
415
416 /*
417 * Calc new common action.
418 *
419 * This is quit a bit ASSUMPTIVE about the limited use. We will not
420 * bother synching the mask, and we pretend to care about SA_RESTART.
421 * The only thing we really actually care about is the sh_handler.
422 *
423 * On second though, it's possible we should just tie this to the root
424 * shell since it only really applies to external signal ...
425 */
426 if ( g_sig_state[signo].num_specific
427 || g_sig_state[signo].num_ignore != g_num_shells)
428 g_sig_state[signo].sa.sa_handler = sh_sig_common_handler;
429 else if (g_sig_state[signo].num_ignore)
430 g_sig_state[signo].sa.sa_handler = SIG_IGN;
431 else
432 g_sig_state[signo].sa.sa_handler = SIG_DFL;
433 g_sig_state[signo].sa.sa_flags = psh->sigactions[signo].sh_flags & SA_RESTART;
434
435 TRACE2((psh, "sh_sigaction: setting signo=%d:%s to {.sa_handler=%p, .sa_flags=%#x}\n",
436 signo, sys_signame[signo], g_sig_state[signo].sa.sa_handler, g_sig_state[signo].sa.sa_flags));
437# ifdef _MSC_VER
438 if (signal(signo, g_sig_state[signo].sa.sa_handler) == SIG_ERR)
439# else
440 if (sigaction(signo, &g_sig_state[signo].sa, NULL))
441# endif
442 assert(0);
443
444 shmtx_leave(&g_sh_mtx, &tmp);
445 }
446
447 return 0;
448#endif
449}
450
451shsig_t sh_signal(shinstance *psh, int signo, shsig_t handler)
452{
453 shsigaction_t sa;
454 shsig_t ret;
455
456 /*
457 * Implementation using sh_sigaction.
458 */
459 if (sh_sigaction(psh, signo, NULL, &sa))
460 return SH_SIG_ERR;
461
462 ret = sa.sh_handler;
463 sa.sh_flags &= SA_RESTART;
464 sa.sh_handler = handler;
465 sh_sigemptyset(&sa.sh_mask);
466 sh_sigaddset(&sa.sh_mask, signo); /* ?? */
467 if (sh_sigaction(psh, signo, &sa, NULL))
468 return SH_SIG_ERR;
469
470 return ret;
471}
472
473int sh_siginterrupt(shinstance *psh, int signo, int interrupt)
474{
475 shsigaction_t sa;
476 int oldflags = 0;
477
478 /*
479 * Implementation using sh_sigaction.
480 */
481 if (sh_sigaction(psh, signo, NULL, &sa))
482 return -1;
483 oldflags = sa.sh_flags;
484 if (interrupt)
485 sa.sh_flags &= ~SA_RESTART;
486 else
487 sa.sh_flags |= ~SA_RESTART;
488 if (!((oldflags ^ sa.sh_flags) & SA_RESTART))
489 return 0; /* unchanged. */
490
491 return sh_sigaction(psh, signo, &sa, NULL);
492}
493
494void sh_sigemptyset(shsigset_t *setp)
495{
496 memset(setp, 0, sizeof(*setp));
497}
498
499void sh_sigaddset(shsigset_t *setp, int signo)
500{
501#ifdef _MSC_VER
502 *setp |= 1U << signo;
503#else
504 sigaddset(setp, signo);
505#endif
506}
507
508void sh_sigdelset(shsigset_t *setp, int signo)
509{
510#ifdef _MSC_VER
511 *setp &= ~(1U << signo);
512#else
513 sigdelset(setp, signo);
514#endif
515}
516
517int sh_sigismember(shsigset_t *setp, int signo)
518{
519#ifdef _MSC_VER
520 return !!(*setp & (1U << signo));
521#else
522 return !!sigismember(setp, signo);
523#endif
524}
525
526int sh_sigprocmask(shinstance *psh, int operation, shsigset_t const *newp, shsigset_t *oldp)
527{
528#ifdef SH_PURE_STUB_MODE
529 return -1;
530#elif defined(SH_STUB_MODE)
531 (void)psh;
532# ifdef _MSC_VER
533 return -1;
534# else
535 return sigprocmask(operation, newp, oldp);
536# endif
537#else
538#endif
539}
540
541void sh_abort(shinstance *psh)
542{
543 TRACE2((psh, "sh_abort\n"));
544
545#ifdef SH_PURE_STUB_MODE
546#elif defined(SH_STUB_MODE)
547 abort();
548#else
549#endif
550
551 TRACE2((psh, "sh_abort returns!\n"));
552 (void)psh;
553}
554
555void sh_raise_sigint(shinstance *psh)
556{
557 TRACE2((psh, "sh_raise(SIGINT)\n"));
558
559#ifdef SH_PURE_STUB_MODE
560#elif defined(SH_STUB_MODE)
561 (void)psh;
562 raise(SIGINT);
563#else
564#endif
565
566 TRACE2((psh, "sh_raise(SIGINT) returns\n"));
567 (void)psh;
568}
569
570int sh_kill(shinstance *psh, pid_t pid, int signo)
571{
572 int rc;
573
574#ifdef SH_PURE_STUB_MODE
575 rc = -1;
576#elif defined(SH_STUB_MODE)
577# ifdef _MSC_VER
578 rc = -1;
579# else
580 //fprintf(stderr, "kill(%d, %d)\n", pid, signo);
581 rc = kill(pid, signo);
582# endif
583#else
584#endif
585
586 TRACE2((psh, "sh_kill(%d, %d) -> %d [%d]\n", pid, signo, rc, errno));
587 (void)psh;
588 return rc;
589}
590
591int sh_killpg(shinstance *psh, pid_t pgid, int signo)
592{
593 int rc;
594
595#ifdef SH_PURE_STUB_MODE
596 rc = -1;
597#elif defined(SH_STUB_MODE)
598# ifdef _MSC_VER
599 rc = -1;
600# else
601 //fprintf(stderr, "killpg(%d, %d)\n", pgid, signo);
602 rc = killpg(pgid, signo);
603# endif
604#else
605#endif
606
607 TRACE2((psh, "sh_killpg(%d, %d) -> %d [%d]\n", pgid, signo, rc, errno));
608 (void)psh;
609 return rc;
610}
611
612clock_t sh_times(shinstance *psh, shtms *tmsp)
613{
614#ifdef SH_PURE_STUB_MODE
615 return 0;
616#elif defined(SH_STUB_MODE)
617 (void)psh;
618# ifdef _MSC_VER
619 return 0;
620# else
621 return times(tmsp);
622# endif
623#else
624#endif
625}
626
627int sh_sysconf_clk_tck(void)
628{
629#ifdef SH_PURE_STUB_MODE
630 return 1;
631#else
632# ifdef _MSC_VER
633 return CLK_TCK;
634# else
635 return sysconf(_SC_CLK_TCK);
636# endif
637#endif
638}
639
640pid_t sh_fork(shinstance *psh)
641{
642 pid_t pid;
643 TRACE2((psh, "sh_fork\n"));
644
645#ifdef SH_PURE_STUB_MODE
646 pid = -1;
647#elif defined(SH_STUB_MODE)
648# ifdef _MSC_VER
649 pid = -1;
650# else
651 pid = fork();
652# endif
653#else
654#endif
655
656 TRACE2((psh, "sh_fork -> %d [%d]\n", pid, errno));
657 (void)psh;
658 return pid;
659}
660
661pid_t sh_waitpid(shinstance *psh, pid_t pid, int *statusp, int flags)
662{
663 pid_t pidret;
664
665 *statusp = 0;
666#ifdef SH_PURE_STUB_MODE
667 pidret = -1;
668#elif defined(SH_STUB_MODE)
669# ifdef _MSC_VER
670 pidret = -1;
671# else
672 pidret = waitpid(pid, statusp, flags);
673# endif
674#else
675#endif
676
677 TRACE2((psh, "waitpid(%d, %p, %#x) -> %d [%d] *statusp=%#x (rc=%d)\n", pid, statusp, flags,
678 pidret, errno, *statusp, WEXITSTATUS(*statusp)));
679 (void)psh;
680 return pidret;
681}
682
683void sh__exit(shinstance *psh, int rc)
684{
685 TRACE2((psh, "sh__exit(%d)\n", rc));
686 (void)psh;
687
688#ifdef SH_PURE_STUB_MODE
689 return -1;
690#elif defined(SH_STUB_MODE)
691 _exit(rc);
692#else
693#endif
694}
695
696int sh_execve(shinstance *psh, const char *exe, const char * const *argv, const char * const *envp)
697{
698 int rc;
699
700#ifdef DEBUG
701 /* log it all */
702 TRACE2((psh, "sh_execve(%p:{%s}, %p, %p}\n", exe, exe, argv, envp));
703 for (rc = 0; argv[rc]; rc++)
704 TRACE2((psh, " argv[%d]=%p:{%s}\n", rc, argv[rc], argv[rc]));
705#endif
706
707#ifdef SH_PURE_STUB_MODE
708 rc = -1;
709#elif defined(SH_STUB_MODE)
710# ifdef _MSC_VER
711 rc = -1;
712# else
713 rc = execve(exe, (char **)argv, (char **)envp);
714# endif
715#else
716#endif
717
718 TRACE2((psh, "sh_execve -> %d [%d]\n", rc, errno));
719 (void)psh;
720 return rc;
721}
722
723uid_t sh_getuid(shinstance *psh)
724{
725#ifdef SH_PURE_STUB_MODE
726 uid_t uid = 0;
727#elif defined(SH_STUB_MODE)
728# ifdef _MSC_VER
729 uid_t uid = 0;
730# else
731 uid_t uid = getuid();
732# endif
733#else
734#endif
735
736 TRACE2((psh, "sh_getuid() -> %d [%d]\n", uid, errno));
737 (void)psh;
738 return uid;
739}
740
741uid_t sh_geteuid(shinstance *psh)
742{
743#ifdef SH_PURE_STUB_MODE
744 uid_t euid = 0;
745#elif defined(SH_STUB_MODE)
746# ifdef _MSC_VER
747 uid_t euid = 0;
748# else
749 uid_t euid = geteuid();
750# endif
751#else
752#endif
753
754 TRACE2((psh, "sh_geteuid() -> %d [%d]\n", euid, errno));
755 (void)psh;
756 return euid;
757}
758
759gid_t sh_getgid(shinstance *psh)
760{
761#ifdef SH_PURE_STUB_MODE
762 gid_t gid = 0;
763#elif defined(SH_STUB_MODE)
764# ifdef _MSC_VER
765 gid_t gid = 0;
766# else
767 gid_t gid = getgid();
768# endif
769#else
770#endif
771
772 TRACE2((psh, "sh_getgid() -> %d [%d]\n", gid, errno));
773 (void)psh;
774 return gid;
775}
776
777gid_t sh_getegid(shinstance *psh)
778{
779#ifdef SH_PURE_STUB_MODE
780 gid_t egid = 0;
781#elif defined(SH_STUB_MODE)
782# ifdef _MSC_VER
783 gid_t egid = 0;
784# else
785 gid_t egid = getegid();
786# endif
787#else
788#endif
789
790 TRACE2((psh, "sh_getegid() -> %d [%d]\n", egid, errno));
791 (void)psh;
792 return egid;
793}
794
795pid_t sh_getpid(shinstance *psh)
796{
797 pid_t pid;
798
799#ifdef SH_PURE_STUB_MODE
800 pid = 0;
801#elif defined(SH_STUB_MODE)
802# ifdef _MSC_VER
803 pid = _getpid();
804# else
805 pid = getpid();
806# endif
807#else
808#endif
809
810 (void)psh;
811 return pid;
812}
813
814pid_t sh_getpgrp(shinstance *psh)
815{
816#ifdef SH_PURE_STUB_MODE
817 pid_t pgrp = 0;
818#elif defined(SH_STUB_MODE)
819# ifdef _MSC_VER
820 pid_t pgrp _getpid();
821# else
822 pid_t pgrp = getpgrp();
823# endif
824#else
825#endif
826
827 TRACE2((psh, "sh_getpgrp() -> %d [%d]\n", pgrp, errno));
828 (void)psh;
829 return pgrp;
830}
831
832pid_t sh_getpgid(shinstance *psh, pid_t pid)
833{
834#ifdef SH_PURE_STUB_MODE
835 pid_t pgid = pid;
836#elif defined(SH_STUB_MODE)
837# ifdef _MSC_VER
838 pid_t pgid = pid;
839# else
840 pid_t pgid = getpgid(pid);
841# endif
842#else
843#endif
844
845 TRACE2((psh, "sh_getpgid(%d) -> %d [%d]\n", pid, pgid, errno));
846 (void)psh;
847 return pgid;
848}
849
850int sh_setpgid(shinstance *psh, pid_t pid, pid_t pgid)
851{
852#ifdef SH_PURE_STUB_MODE
853 int rc = -1;
854#elif defined(SH_STUB_MODE)
855# ifdef _MSC_VER
856 int rc = -1;
857# else
858 int rc = setpgid(pid, pgid);
859# endif
860#else
861#endif
862
863 TRACE2((psh, "sh_setpgid(%d, %d) -> %d [%d]\n", pid, pgid, rc, errno));
864 (void)psh;
865 return rc;
866}
867
868pid_t sh_tcgetpgrp(shinstance *psh, int fd)
869{
870 pid_t pgrp;
871
872#ifdef SH_PURE_STUB_MODE
873 pgrp = -1;
874#elif defined(SH_STUB_MODE)
875# ifdef _MSC_VER
876 pgrp = -1;
877# else
878 pgrp = tcgetpgrp(fd);
879# endif
880#else
881#endif
882
883 TRACE2((psh, "sh_tcgetpgrp(%d) -> %d [%d]\n", fd, pgrp, errno));
884 (void)psh;
885 return pgrp;
886}
887
888int sh_tcsetpgrp(shinstance *psh, int fd, pid_t pgrp)
889{
890 int rc;
891 TRACE2((psh, "sh_tcsetpgrp(%d, %d)\n", fd, pgrp));
892
893#ifdef SH_PURE_STUB_MODE
894 rc = -1;
895#elif defined(SH_STUB_MODE)
896# ifdef _MSC_VER
897 rc = -1;
898# else
899 rc = tcsetpgrp(fd, pgrp);
900# endif
901#else
902#endif
903
904 TRACE2((psh, "sh_tcsetpgrp(%d, %d) -> %d [%d]\n", fd, pgrp, rc, errno));
905 (void)psh;
906 return rc;
907}
908
909int sh_getrlimit(shinstance *psh, int resid, shrlimit *limp)
910{
911#ifdef SH_PURE_STUB_MODE
912 int rc = -1;
913#elif defined(SH_STUB_MODE)
914# ifdef _MSC_VER
915 int rc = -1;
916# else
917 int rc = getrlimit(resid, limp);
918# endif
919#else
920#endif
921
922 TRACE2((psh, "sh_getrlimit(%d, %p) -> %d [%d] {%ld,%ld}\n",
923 resid, limp, rc, errno, (long)limp->rlim_cur, (long)limp->rlim_max));
924 (void)psh;
925 return rc;
926}
927
928int sh_setrlimit(shinstance *psh, int resid, const shrlimit *limp)
929{
930#ifdef SH_PURE_STUB_MODE
931 int rc = -1;
932#elif defined(SH_STUB_MODE)
933# ifdef _MSC_VER
934 int rc = -1;
935# else
936 int rc = setrlimit(resid, limp);
937# endif
938#else
939#endif
940
941 TRACE2((psh, "sh_setrlimit(%d, %p:{%ld,%ld}) -> %d [%d]\n",
942 resid, limp, (long)limp->rlim_cur, (long)limp->rlim_max, rc, errno));
943 (void)psh;
944 return rc;
945}
946
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