1 /* $Header: /p/tcsh/cvsroot/tcsh/sh.proc.c,v 3.109 2009/06/25 21:15:37 christos Exp $ */
3 * sh.proc.c: Job manipulations
6 * Copyright (c) 1980, 1991 The Regents of the University of California.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 RCSID("$tcsh: sh.proc.c,v 3.109 2009/06/25 21:15:37 christos Exp $")
44 #endif /* WINNT_NATIVE */
50 #if defined(_BSD) || (defined(IRIS4D) && __STDC__) || defined(__lucid) || defined(linux) || defined(__GNU__) || defined(__GLIBC__)
52 #endif /* _BSD || (IRIS4D && __STDC__) || __lucid || glibc */
54 # define WTERMSIG(w) (((union wait *) &(w))->w_termsig)
57 # endif /* !BSDWAIT */
58 #endif /* !WTERMSIG */
60 # define WEXITSTATUS(w) (((union wait *) &(w))->w_retcode)
61 #endif /* !WEXITSTATUS */
63 # define WSTOPSIG(w) (((union wait *) &(w))->w_stopsig)
64 #endif /* !WSTOPSIG */
68 # define WCOREDUMP(x) (_W_INT(x) & WCOREFLAG)
74 # define WCOREDUMP(w) (((union wait *) &(w))->w_coredump)
76 # define WCOREDUMP(w) ((w) & 0200)
77 # endif /* !BSDWAIT */
78 #endif /* !WCOREDUMP */
81 # define jobdebug_xprintf(x) (void)0
82 # define jobdebug_flush() (void)0
84 # define jobdebug_xprintf(s) xprintf s
85 # define jobdebug_flush() flush()
89 * C Shell - functions that manage processes, handling hanging, termination
92 #define BIGINDEX 9 /* largest desirable job index */
96 /* use 'cvxrusage' to get parallel statistics */
97 static struct cvxrusage zru = {{0L, 0L}, {0L, 0L}, 0L, 0L, 0L, 0L,
98 0L, 0L, 0L, 0L, 0L, 0L, 0L, 0L, 0L, 0L,
99 {0L, 0L}, 0LL, 0LL, 0LL, 0LL, 0L, 0L, 0L,
100 0LL, 0LL, {0L, 0L, 0L, 0L, 0L}};
102 static struct rusage zru;
104 #else /* !BSDTIMES */
106 static struct process_stats zru = {{0L, 0L}, {0L, 0L}, 0, 0, 0, 0, 0, 0, 0,
107 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
108 # else /* !_SEQUENT_ */
110 static struct tms zru = {0, 0, 0, 0}, lru = {0, 0, 0, 0};
112 static struct tms zru = {0L, 0L, 0L, 0L}, lru = {0L, 0L, 0L, 0L};
114 # endif /* !_SEQUENT_ */
115 #endif /* !BSDTIMES */
118 static int timesdone; /* shtimes buffer full ? */
119 #endif /* BSDTIMES */
121 #ifndef RUSAGE_CHILDREN
122 # define RUSAGE_CHILDREN -1
123 #endif /* RUSAGE_CHILDREN */
125 static void pflushall (void);
126 static void pflush (struct process *);
127 static void pfree (struct process *);
128 static void pclrcurr (struct process *);
129 static void morecommand (size_t);
130 static void padd (struct command *);
131 static int pprint (struct process *, int);
132 static void ptprint (struct process *);
133 static void pads (Char *);
134 static void pkill (Char **, int);
135 static struct process *pgetcurr (struct process *);
136 static void okpcntl (void);
137 static void setttypgrp (int);
140 * pchild - call queued by the SIGCHLD signal
141 * indicating that at least one child has terminated or stopped
142 * thus at least one wait system call will definitely return a
143 * childs status. Top level routines (like pwait) must be sure
144 * to mask interrupts when playing with the proclist data structures!
156 #endif /* !BSDWAIT */
160 #else /* !BSDTIMES */
162 struct process_stats ru;
163 struct process_stats cpst1, cpst2;
165 # else /* !_SEQUENT_ */
166 struct tms proctimes;
170 (void) times(&shtimes);
172 # endif /* !_SEQUENT_ */
173 #endif /* !BSDTIMES */
175 jobdebug_xprintf(("pchild()\n"));
178 jobdebug_xprintf(("Waiting...\n"));
180 errno = 0; /* reset, just in case */
186 /* use 'cvxwait' to get parallel statistics */
188 (setintr && (intty || insource) ? WNOHANG | WUNTRACED : WNOHANG), &ru);
190 /* both a wait3 and rusage */
191 # if !defined(BSDWAIT) || defined(NeXT) || defined(MACH) || defined(linux) || defined(__GNU__) || defined(__GLIBC__) || (defined(IRIS4D) && SYSVREL <= 3) || defined(__lucid) || defined(__osf__)
193 (setintr && (intty || insource) ? WNOHANG | WUNTRACED : WNOHANG), &ru);
195 pid = wait3(&w.w_status,
196 (setintr && (intty || insource) ? WNOHANG | WUNTRACED : WNOHANG), &ru);
197 # endif /* BSDWAIT */
199 # else /* !BSDTIMES */
201 (void) get_process_stats(&tv, PS_SELF, 0, &cpst1);
202 pid = waitpid(-1, &w,
203 (setintr && (intty || insource) ? WNOHANG | WUNTRACED : WNOHANG));
204 (void) get_process_stats(&tv, PS_SELF, 0, &cpst2);
205 pr_stat_sub(&cpst2, &cpst1, &ru);
206 # else /* !_SEQUENT_ */
208 /* we have a wait3, but no rusage stuff */
209 pid = wait3(&w.w_status,
210 (setintr && (intty || insource) ? WNOHANG | WUNTRACED : WNOHANG), 0);
212 pid = waitpid(-1, &w,
213 (setintr && (intty || insource) ? WNOHANG | WUNTRACED : WNOHANG));
215 # endif /* !_SEQUENT_ */
216 # endif /* !BSDTIMES */
217 # else /* !BSDJOBS */
220 /* both a wait3 and rusage */
222 pid = wait3(&w.w_status, WNOHANG, 0);
224 pid = wait3(&w.w_status, WNOHANG, &ru);
226 # else /* !BSDTIMES */
227 # ifdef ODT /* For Sco Unix 3.2.0 or ODT 1.0 */
229 pid = waitpid(-1, &w,
230 (setintr && (intty || insource) ? WNOHANG | WUNTRACED : WNOHANG));
232 # if defined(aiws) || defined(uts)
234 pid = wait3(&w.w_status,
235 (setintr && (intty || insource) ? WNOHANG | WUNTRACED : WNOHANG), 0);
236 # endif /* aiws || uts */
239 /* no wait3, therefore no rusage */
240 /* on Sys V, this may hang. I hope it's not going to be a problem */
244 * XXX: for greater than 3 we should use waitpid().
245 * but then again, SVR4 falls into the POSIX/BSDJOBS category.
247 pid = wait(&w.w_status);
248 # endif /* BSDWAIT */
249 # endif /* !HAVEwait3 */
250 # endif /* !BSDTIMES */
251 # endif /* !BSDJOBS */
252 #else /* WINNT_NATIVE */
253 pid = waitpid(-1, &w,
254 (setintr && (intty || insource) ? WNOHANG | WUNTRACED : WNOHANG));
255 #endif /* WINNT_NATIVE */
257 jobdebug_xprintf(("parent %d pid %d, retval %x termsig %x retcode %x\n",
258 (int)getpid(), (int)pid, w, WTERMSIG(w),
262 if ((pid == 0) || (pid == -1)) {
263 handle_pending_signals();
264 jobdebug_xprintf(("errno == %d\n", errno));
269 for (pp = proclist.p_next; pp != NULL; pp = pp->p_next)
270 if (pid == pp->p_procid)
272 #if !defined(BSDJOBS) && !defined(WINNT_NATIVE)
273 /* this should never have happened */
274 stderror(ERR_SYNC, pid);
276 #else /* BSDJOBS || WINNT_NATIVE */
278 #endif /* !BSDJOBS && !WINNT_NATIVE */
280 pp->p_flags &= ~(PRUNNING | PSTOPPED | PREPORTED);
282 pp->p_flags |= PSTOPPED;
283 pp->p_reason = WSTOPSIG(w);
286 if (pp->p_flags & (PTIME | PPTIME) || adrof(STRtime))
289 (void) get_process_stats(&pp->p_etime, PS_SELF, NULL, NULL);
290 # else /* !_SEQUENT_ */
291 pp->p_etime = times(&proctimes);
292 # endif /* !_SEQUENT_ */
294 (void) gettimeofday(&pp->p_etime, NULL);
295 #endif /* BSDTIMES */
298 #if defined(BSDTIMES) || defined(_SEQUENT_)
300 #else /* !BSDTIMES && !_SEQUENT_ */
301 (void) times(&proctimes);
302 pp->p_utime = proctimes.tms_cutime - shtimes.tms_cutime;
303 pp->p_stime = proctimes.tms_cstime - shtimes.tms_cstime;
305 #endif /* !BSDTIMES && !_SEQUENT_ */
306 if (WIFSIGNALED(w)) {
307 if (WTERMSIG(w) == SIGINT)
308 pp->p_flags |= PINTERRUPTED;
310 pp->p_flags |= PSIGNALED;
312 pp->p_flags |= PDUMPED;
313 pp->p_reason = WTERMSIG(w);
316 pp->p_reason = WEXITSTATUS(w);
317 if (pp->p_reason != 0)
318 pp->p_flags |= PAEXITED;
320 pp->p_flags |= PNEXITED;
326 if ((fp->p_flags & (PPTIME | PRUNNING | PSTOPPED)) == 0 &&
327 !child && adrof(STRtime) &&
329 fp->p_rusage.ru_utime.tv_sec + fp->p_rusage.ru_stime.tv_sec
330 #else /* !BSDTIMES */
332 fp->p_rusage.ps_utime.tv_sec + fp->p_rusage.ps_stime.tv_sec
333 # else /* !_SEQUENT_ */
335 (fp->p_utime + fp->p_stime) / HZ
337 (fp->p_utime + fp->p_stime) / clk_tck
339 # endif /* !_SEQUENT_ */
340 #endif /* !BSDTIMES */
341 >= atoi(short2str(varval(STRtime))))
342 fp->p_flags |= PTIME;
343 jobflags |= fp->p_flags;
344 } while ((fp = fp->p_friends) != pp);
345 pp->p_flags &= ~PFOREGND;
346 if (pp == pp->p_friends && (pp->p_flags & PPTIME)) {
347 pp->p_flags &= ~PPTIME;
348 pp->p_flags |= PTIME;
350 if ((jobflags & (PRUNNING | PREPORTED)) == 0) {
353 if (fp->p_flags & PSTOPPED)
354 fp->p_flags |= PREPORTED;
355 } while ((fp = fp->p_friends) != pp);
356 while (fp->p_procid != fp->p_jobid)
358 if (jobflags & PSTOPPED) {
359 if (pcurrent && pcurrent != fp)
360 pprevious = pcurrent;
365 if (jobflags & PFOREGND) {
366 if (!(jobflags & (PSIGNALED | PSTOPPED | PPTIME) ||
368 jobflags & PAEXITED ||
370 !eq(dcwd->di_name, fp->p_cwd->di_name))) {
371 /* PWP: print a newline after ^C */
372 if (jobflags & PINTERRUPTED) {
373 xputchar('\r' | QUOTE);
377 else if ((jobflags & (PTIME|PSTOPPED)) == PTIME)
383 if (jobflags & PNOTIFY || adrof(STRnotify)) {
384 xputchar('\r' | QUOTE);
386 (void) pprint(pp, NUMBER | NAME | REASON);
387 if ((jobflags & PSTOPPED) == 0)
394 * don't really want to do that, because it
395 * will erase our message in case of multi-line
405 fp->p_flags |= PNEEDNOTE;
410 #if defined(BSDJOBS) || defined(HAVEwait3) ||defined(WINNT_NATIVE)
412 #endif /* BSDJOBS || HAVEwait3 */
424 for (pp = proclist.p_next; pp != NULL; pp = pp->p_next) {
425 if (pp->p_flags & PNEEDNOTE) {
427 cleanup_push(&pchild_disabled, disabled_cleanup);
428 pp->p_flags &= ~PNEEDNOTE;
429 flags = pprint(pp, NUMBER | NAME | REASON);
430 if ((flags & (PRUNNING | PSTOPPED)) == 0)
432 cleanup_until(&pchild_disabled);
439 pfree(struct process *pp)
441 xfree(pp->p_command);
442 if (pp->p_cwd && --pp->p_cwd->di_count == 0)
443 if (pp->p_cwd->di_next == 0)
450 * pwait - wait for current job to terminate, maintaining integrity
451 * of current and previous job indicators.
456 struct process *fp, *pp;
459 * Here's where dead procs get flushed.
461 for (pp = (fp = &proclist)->p_next; pp != NULL; pp = (fp = pp)->p_next)
462 if (pp->p_procid == 0) {
463 fp->p_next = pp->p_next;
472 * pjwait - wait for a job to finish or become stopped
473 * It is assumed to be in the foreground state (PFOREGND)
476 pjwait(struct process *pp)
479 int jobflags, reason;
480 sigset_t oset, set, pause_mask;
483 while (pp->p_procid != pp->p_jobid)
488 if ((fp->p_flags & (PFOREGND | PRUNNING)) == PRUNNING)
489 xprintf("%s", CGETS(17, 1, "BUG: waiting for background job!\n"));
490 } while ((fp = fp->p_friends) != pp);
492 * Now keep pausing as long as we are not interrupted (SIGINT), and the
493 * target process, or any of its friends, are running
497 sigaddset(&set, SIGINT);
498 sigaddset(&set, SIGCHLD);
499 (void)sigprocmask(SIG_BLOCK, &set, &oset);
500 cleanup_push(&oset, sigprocmask_cleanup);
502 sigdelset(&pause_mask, SIGCHLD);
504 handle_pending_signals();
507 jobflags |= fp->p_flags;
508 while ((fp = (fp->p_friends)) != pp);
509 if ((jobflags & PRUNNING) == 0)
511 jobdebug_xprintf(("%d starting to sigsuspend for SIGCHLD on %d\n",
512 getpid(), fp->p_procid));
513 sigsuspend(&pause_mask);
515 cleanup_until(&oset);
516 jobdebug_xprintf(("%d returned from sigsuspend loop\n", getpid()));
518 if (tpgrp > 0) /* get tty back */
519 (void) tcsetpgrp(FSHTTY, tpgrp);
521 if ((jobflags & (PSIGNALED | PSTOPPED | PTIME)) ||
522 fp->p_cwd == NULL || !eq(dcwd->di_name, fp->p_cwd->di_name)) {
523 if (jobflags & PSTOPPED) {
525 if (adrof(STRlistjobs)) {
528 jobcommand[0] = STRjobs;
529 if (eq(varval(STRlistjobs), STRlong))
530 jobcommand[1] = STRml;
532 jobcommand[1] = NULL;
533 jobcommand[2] = NULL;
535 dojobs(jobcommand, NULL);
536 (void) pprint(pp, SHELLDIR);
539 (void) pprint(pp, AREASON | SHELLDIR);
542 (void) pprint(pp, AREASON | SHELLDIR);
544 if ((jobflags & (PINTERRUPTED | PSTOPPED)) && setintr &&
545 (!gointr || !eq(gointr, STRminus))) {
546 if ((jobflags & PSTOPPED) == 0)
555 reason = fp->p_flags & (PSIGNALED | PINTERRUPTED) ?
556 fp->p_reason | META : fp->p_reason;
557 } while ((fp = fp->p_friends) != pp);
559 * Don't report on backquoted jobs, cause it will mess up
562 if ((reason != 0) && (adrof(STRprintexitvalue)) &&
563 (pp->p_flags & PBACKQ) == 0)
564 xprintf(CGETS(17, 2, "Exit %d\n"), reason);
565 reason_str = putn(reason);
566 cleanup_push(reason_str, xfree);
567 setv(STRstatus, reason_str, VAR_READWRITE);
568 cleanup_ignore(reason_str);
569 cleanup_until(reason_str);
570 if (reason && exiterr)
576 * dowait - wait for all processes to finish
581 dowait(Char **v, struct command *c)
589 sigprocmask(SIG_BLOCK, NULL, &pause_mask);
590 sigdelset(&pause_mask, SIGCHLD);
592 sigdelset(&pause_mask, SIGINT);
594 for (pp = proclist.p_next; pp; pp = pp->p_next)
595 if (pp->p_procid && /* pp->p_procid == pp->p_jobid && */
596 pp->p_flags & PRUNNING) {
597 handle_pending_signals();
598 sigsuspend(&pause_mask);
599 handle_pending_signals();
606 * pflushall - flush all jobs from list (e.g. at fork())
613 for (pp = proclist.p_next; pp != NULL; pp = pp->p_next)
619 * pflush - flag all process structures in the same job as the
620 * the argument process for deletion. The actual free of the
621 * space is not done here since pflush is called at interrupt level.
624 pflush(struct process *pp)
629 if (pp->p_procid == 0) {
630 xprintf("%s", CGETS(17, 3, "BUG: process flushed twice"));
633 while (pp->p_procid != pp->p_jobid)
641 np->p_index = np->p_procid = 0;
642 np->p_flags &= ~PNEEDNOTE;
643 } while ((np = np->p_friends) != pp);
644 if (idx == pmaxindex) {
645 for (np = proclist.p_next, idx = 0; np; np = np->p_next)
646 if (np->p_index > idx)
653 * pclrcurr - make sure the given job is not the current or previous job;
654 * pp MUST be the job leader
657 pclrcurr(struct process *pp)
659 if (pp == pcurrent) {
660 if (pprevious != NULL) {
661 pcurrent = pprevious;
662 pprevious = pgetcurr(pp);
665 pcurrent = pgetcurr(pp);
666 pprevious = pgetcurr(pp);
669 else if (pp == pprevious)
670 pprevious = pgetcurr(pp);
673 /* +4 here is 1 for '\0', 1 ea for << >& >> */
675 static size_t cmdmax;
676 static size_t cmdlen;
678 #define CMD_INIT 1024
682 morecommand(size_t s)
688 ncmdstr = xrealloc(cmdstr, cmdmax * sizeof(*cmdstr));
689 d = ncmdstr - cmdstr;
695 * unparse - Export padd() functionality
698 unparse(struct command *t)
701 morecommand(CMD_INIT);
706 return Strsave(cmdstr);
711 * palloc - allocate a process structure and fill it up.
712 * an important assumption is made that the process is running.
715 palloc(pid_t pid, struct command *t)
720 pp = xcalloc(1, sizeof(struct process));
722 pp->p_flags = ((t->t_dflg & F_AMPERSAND) ? 0 : PFOREGND) | PRUNNING;
723 if (t->t_dflg & F_TIME)
724 pp->p_flags |= PPTIME;
725 if (t->t_dflg & F_BACKQ)
726 pp->p_flags |= PBACKQ;
727 if (t->t_dflg & F_HUP)
730 morecommand(CMD_INIT);
735 if (t->t_dflg & F_PIPEOUT) {
737 if (t->t_dflg & F_STDERR)
738 pp->p_flags |= PDIAG;
740 pp->p_command = Strsave(cmdstr);
744 /* careful here with interrupt level */
746 pp->p_index = pcurrjob->p_index;
747 pp->p_friends = pcurrjob;
748 pp->p_jobid = pcurrjob->p_procid;
749 for (fp = pcurrjob; fp->p_friends != pcurrjob; fp = fp->p_friends)
759 if (pmaxindex < BIGINDEX)
760 pp->p_index = ++pmaxindex;
765 for (np = proclist.p_next; np; np = np->p_next)
766 if (np->p_index == i)
775 if (pcurrent == NULL)
777 else if (pprevious == NULL)
780 pp->p_next = proclist.p_next;
781 proclist.p_next = pp;
783 (void) gettimeofday(&pp->p_btime, NULL);
784 #else /* !BSDTIMES */
786 (void) get_process_stats(&pp->p_btime, PS_SELF, NULL, NULL);
787 # else /* !_SEQUENT_ */
791 pp->p_btime = times(&tmptimes);
793 # endif /* !_SEQUENT_ */
794 #endif /* !BSDTIMES */
798 padd(struct command *t)
813 for (argp = t->t_dcom; *argp; argp++) {
847 if ((t->t_dflg & F_PIPEIN) == 0 && t->t_dlef) {
848 pads((t->t_dflg & F_READ) ? STRspLarrow2sp : STRspLarrowsp);
851 if ((t->t_dflg & F_PIPEOUT) == 0 && t->t_drit) {
852 pads((t->t_dflg & F_APPEND) ? STRspRarrow2 : STRspRarrow);
853 if (t->t_dflg & F_STDERR)
866 * Avoid the Quoted Space alias hack! Reported by:
867 * sam@john-bigboote.ICS.UCI.EDU (Sam Horrocks)
869 if (cp[0] == STRQNULL[0])
874 len = cmdlen + i + CMD_INCR;
877 (void) Strcpy(cmdp, cp);
883 * psavejob - temporarily save the current job on a one level stack
884 * so another job can be created. Used for { } in exp6
885 * and `` in globbing.
895 psavejob_cleanup(void *dummy)
903 * pendjob - indicate that a job (set of commands) has been completed
904 * or is about to begin.
909 struct process *pp, *tp;
911 if (pcurrjob && (pcurrjob->p_flags & (PFOREGND | PSTOPPED)) == 0) {
913 while (pp->p_procid != pp->p_jobid)
915 xprintf("[%d]", pp->p_index);
918 xprintf(" %d", pp->p_procid);
923 pholdjob = pcurrjob = 0;
927 * pprint - print a job
931 * Hacks have been added for SVR4 to deal with pipe's being spawned in
934 * David Dawes (dawes@physics.su.oz.au) Oct 1991
938 pprint(struct process *pp, int flag)
942 int jobflags, pstatus, pcond;
946 struct process *pipehead = NULL, *pipetail = NULL, *pmarker = NULL;
948 #endif /* BACKPIPE */
950 while (pp->p_procid != pp->p_jobid)
952 if (pp == pp->p_friends && (pp->p_flags & PPTIME)) {
953 pp->p_flags &= ~PPTIME;
954 pp->p_flags |= PTIME;
957 status = reason = -1;
962 * The pipeline is reversed, so locate the real head of the pipeline
963 * if pp is at the tail of a pipe (and not already in a pipeline)
965 if ((pp->p_friends->p_flags & PPOU) && !inpipe && (flag & NAME)) {
970 while (pp->p_friends->p_flags & PPOU);
974 * pmarker is used to hold the place of the proc being processed, so
975 * we can search for the next one downstream later.
978 pcond = (tp != pp || (inpipe && tp == pp));
979 #else /* !BACKPIPE */
981 #endif /* BACKPIPE */
983 jobflags |= pp->p_flags;
984 pstatus = (int) (pp->p_flags & PALLSTATES);
985 if (pcond && linp != linbuf && !(flag & FANCY) &&
986 ((pstatus == status && pp->p_reason == reason) ||
990 if (pcond && linp != linbuf)
994 pcond = ((pp == tp && !inpipe) ||
995 (inpipe && pipetail == tp && pp == pipehead));
998 #endif /* BACKPIPE */
1000 xprintf("[%d]%s %c ", pp->p_index,
1001 pp->p_index < 10 ? " " : "",
1002 pp == pcurrent ? '+' :
1003 (pp == pprevious ? '-' : ' '));
1008 xprintf("%5d ", pp->p_procid);
1010 xprintf("%11s ", sitename(pp->p_procid));
1013 if (flag & (REASON | AREASON)) {
1018 if (pstatus == status) {
1019 if (pp->p_reason == reason) {
1020 xprintf(format, "");
1024 reason = (int) pp->p_reason;
1028 reason = (int) pp->p_reason;
1033 xprintf(format, CGETS(17, 4, "Running "));
1040 * tell what happened to the background job
1041 * From: Michael Schroeder
1042 * <mlschroe@immd4.informatik.uni-erlangen.de>
1045 || ((flag & AREASON)
1047 && (reason != SIGPIPE
1048 || (pp->p_flags & PPOU) == 0))) {
1053 ptr = (char *)(intptr_t)mesg[pp->p_reason & 0177].pname;
1055 ptr = xasprintf("%s %d", CGETS(17, 5, "Signal"),
1056 pp->p_reason & 0177);
1057 cleanup_push(ptr, xfree);
1060 xprintf(format, ptr);
1070 if (flag & REASON) {
1072 xprintf(CGETS(17, 6, "Exit %-25d"), pp->p_reason);
1074 xprintf(format, CGETS(17, 7, "Done"));
1079 xprintf(CGETS(17, 8, "BUG: status=%-9o"),
1086 xprintf("%S", pp->p_command);
1087 if (pp->p_flags & PPOU)
1089 if (pp->p_flags & PDIAG)
1092 if (flag & (REASON | AREASON) && pp->p_flags & PDUMPED)
1093 xprintf("%s", CGETS(17, 9, " (core dumped)"));
1094 if (tp == pp->p_friends) {
1095 if (flag & AMPERSAND)
1097 if (flag & JOBDIR &&
1098 !eq(tp->p_cwd->di_name, dcwd->di_name)) {
1099 xprintf("%s", CGETS(17, 10, " (wd: "));
1100 dtildepr(tp->p_cwd->di_name);
1104 if (pp->p_flags & PPTIME && !(status & (PSTOPPED | PRUNNING))) {
1107 #if defined(BSDTIMES) || defined(_SEQUENT_)
1108 prusage(&zru, &pp->p_rusage, &pp->p_etime,
1110 #else /* !BSDTIMES && !SEQUENT */
1111 lru.tms_utime = pp->p_utime;
1112 lru.tms_stime = pp->p_stime;
1115 prusage(&zru, &lru, pp->p_etime,
1117 #endif /* !BSDTIMES && !SEQUENT */
1121 pcond = ((tp == pp->p_friends && !inpipe) ||
1122 (inpipe && pipehead->p_friends == tp && pp == pipetail));
1123 #else /* !BACKPIPE */
1124 pcond = (tp == pp->p_friends);
1125 #endif /* BACKPIPE */
1129 if (flag & SHELLDIR && !eq(tp->p_cwd->di_name, dcwd->di_name)) {
1130 xprintf("%s", CGETS(17, 11, "(wd now: "));
1131 dtildepr(dcwd->di_name);
1138 * if pmaker == pipetail, we are finished that pipeline, and
1139 * can now skip to past the head
1141 if (pmarker == pipetail) {
1147 * set pp to one before the one we want next, so the while below
1148 * increments to the correct spot.
1152 while (pp->p_friends->p_friends != pmarker);
1153 pmarker = pp->p_friends;
1156 pcond = ((pp = pp->p_friends) != tp || inpipe);
1157 #else /* !BACKPIPE */
1158 pcond = ((pp = pp->p_friends) != tp);
1159 #endif /* BACKPIPE */
1162 if (jobflags & PTIME && (jobflags & (PSTOPPED | PRUNNING)) == 0) {
1163 if (jobflags & NUMBER)
1171 * All 4.3 BSD derived implementations are buggy and I've had enough.
1172 * The following implementation produces similar code and works in all
1173 * cases. The 4.3BSD one works only for <, >, !=
1176 # define timercmp(tvp, uvp, cmp) \
1177 (((tvp)->tv_sec == (uvp)->tv_sec) ? \
1178 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
1179 ((tvp)->tv_sec cmp (uvp)->tv_sec))
1182 ptprint(struct process *tp)
1185 struct timeval tetime, diff;
1186 static struct timeval ztime;
1187 struct sysrusage ru;
1188 struct process *pp = tp;
1193 ruadd(&ru, &pp->p_rusage);
1194 tvsub(&diff, &pp->p_etime, &pp->p_btime);
1195 if (timercmp(&diff, &tetime, >))
1197 } while ((pp = pp->p_friends) != tp);
1198 prusage(&zru, &ru, &tetime, &ztime);
1199 #else /* !BSDTIMES */
1201 timeval_t tetime, diff;
1202 static timeval_t ztime;
1203 struct process_stats ru;
1204 struct process *pp = tp;
1209 ruadd(&ru, &pp->p_rusage);
1210 tvsub(&diff, &pp->p_etime, &pp->p_btime);
1211 if (timercmp(&diff, &tetime, >))
1213 } while ((pp = pp->p_friends) != tp);
1214 prusage(&zru, &ru, &tetime, &ztime);
1215 # else /* !_SEQUENT_ */
1217 static time_t ztime = 0;
1218 static time_t zu_time = 0;
1219 static time_t zs_time = 0;
1220 time_t tetime, diff;
1221 time_t u_time, s_time;
1224 static clock_t ztime = 0;
1225 static clock_t zu_time = 0;
1226 static clock_t zs_time = 0;
1227 clock_t tetime, diff;
1228 clock_t u_time, s_time;
1231 struct tms zts, rts;
1232 struct process *pp = tp;
1238 u_time += pp->p_utime;
1239 s_time += pp->p_stime;
1240 diff = pp->p_etime - pp->p_btime;
1243 } while ((pp = pp->p_friends) != tp);
1244 zts.tms_utime = zu_time;
1245 zts.tms_stime = zs_time;
1248 rts.tms_utime = u_time;
1249 rts.tms_stime = s_time;
1252 prusage(&zts, &rts, tetime, ztime);
1253 # endif /* !_SEQUENT_ */
1254 #endif /* !BSDTIMES */
1258 * dojobs - print all jobs
1262 dojobs(Char **v, struct command *c)
1265 int flag = NUMBER | NAME | REASON;
1272 if (v[1] || !eq(*v, STRml))
1274 flag |= FANCY | JOBDIR;
1276 for (i = 1; i <= pmaxindex; i++)
1277 for (pp = proclist.p_next; pp; pp = pp->p_next)
1278 if (pp->p_index == i && pp->p_procid == pp->p_jobid) {
1279 pp->p_flags &= ~PNEEDNOTE;
1280 if (!(pprint(pp, flag) & (PRUNNING | PSTOPPED)))
1287 * dofg - builtin - put the job into the foreground
1291 dofg(Char **v, struct command *c)
1300 if (!pstart(pp, 1)) {
1302 stderror(ERR_NAME|ERR_BADJOB, pp->p_command, strerror(errno));
1306 } while (*v && *++v);
1310 * %... - builtin - put the job into the foreground
1314 dofg1(Char **v, struct command *c)
1321 if (!pstart(pp, 1)) {
1323 stderror(ERR_NAME|ERR_BADJOB, pp->p_command, strerror(errno));
1330 * dobg - builtin - put the job into the background
1334 dobg(Char **v, struct command *c)
1343 if (!pstart(pp, 0)) {
1345 stderror(ERR_NAME|ERR_BADJOB, pp->p_command, strerror(errno));
1347 } while (*v && *++v);
1351 * %... & - builtin - put the job into the background
1355 dobg1(Char **v, struct command *c)
1361 if (!pstart(pp, 0)) {
1363 stderror(ERR_NAME|ERR_BADJOB, pp->p_command, strerror(errno));
1368 * dostop - builtin - stop the job
1372 dostop(Char **v, struct command *c)
1376 pkill(++v, SIGSTOP);
1377 #endif /* BSDJOBS */
1381 * dokill - builtin - superset of kill (1)
1385 dokill(Char **v, struct command *c)
1387 int signum, len = 0;
1393 if (v[0] && v[0][0] == '-') {
1394 if (v[0][1] == 'l') {
1395 for (signum = 0; signum <= nsig; signum++) {
1396 if ((name = mesg[signum].iname) != NULL) {
1397 len += strlen(name) + 1;
1398 if (len >= TermH - 1) {
1400 len = strlen(name) + 1;
1402 xprintf("%s ", name);
1409 if (v[0][1] == 's') {
1414 stderror(ERR_NAME | ERR_TOOFEW);
1417 if (Isdigit(*sigptr)) {
1419 signum = strtoul(short2str(sigptr), &ep, 0);
1420 if (*ep || signum < 0 || signum > (MAXSIG-1))
1421 stderror(ERR_NAME | ERR_BADSIG);
1424 for (signum = 0; signum <= nsig; signum++)
1425 if (mesg[signum].iname &&
1426 eq(sigptr, str2short(mesg[signum].iname)))
1428 setname(short2str(sigptr));
1429 stderror(ERR_NAME | ERR_UNKSIG);
1440 pkill(Char **v, int signum)
1442 struct process *pp, *np;
1443 int jobflags = 0, err1 = 0;
1445 Char *cp, **vp, **globbed;
1447 /* Avoid globbing %?x patterns */
1448 for (vp = v; vp && *vp; vp++)
1452 v = glob_all_or_error(v);
1454 cleanup_push(globbed, blk_cleanup);
1457 cleanup_push(&pchild_disabled, disabled_cleanup);
1460 cleanup_push(&pintr_disabled, disabled_cleanup);
1463 while (v && (cp = *v)) {
1465 np = pp = pfind(cp);
1467 jobflags |= np->p_flags;
1468 while ((np = np->p_friends) != pp);
1476 if ((jobflags & PRUNNING) == 0) {
1478 xprintf(CGETS(17, 12, "%S: Already suspended\n"), cp);
1479 # else /* !SUSPENDED */
1480 xprintf(CGETS(17, 13, "%S: Already stopped\n"), cp);
1481 # endif /* !SUSPENDED */
1487 * suspend a process, kill -CONT %, then type jobs; the shell
1488 * says it is suspended, but it is running; thanks jaap..
1491 if (!pstart(pp, 0)) {
1493 stderror(ERR_NAME|ERR_BADJOB, pp->p_command,
1500 #endif /* BSDJOBS */
1501 if (killpg(pp->p_jobid, signum) < 0) {
1502 xprintf("%S: %s\n", cp, strerror(errno));
1506 if (signum == SIGTERM || signum == SIGHUP)
1507 (void) killpg(pp->p_jobid, SIGCONT);
1508 #endif /* BSDJOBS */
1510 else if (!(Isdigit(*cp) || *cp == '-'))
1511 stderror(ERR_NAME | ERR_JOBARGS);
1514 #ifndef WINNT_NATIVE
1515 pid = strtol(short2str(cp), &ep, 10);
1517 pid = strtoul(short2str(cp), &ep, 0);
1518 #endif /* WINNT_NATIVE */
1520 stderror(ERR_NAME | ERR_JOBARGS);
1521 else if (kill(pid, signum) < 0) {
1522 xprintf("%d: %s\n", pid, strerror(errno));
1527 if (signum == SIGTERM || signum == SIGHUP)
1528 (void) kill(pid, SIGCONT);
1529 #endif /* BSDJOBS */
1534 cleanup_until(&pchild_disabled);
1536 stderror(ERR_SILENT);
1540 * pstart - start the job in foreground/background
1543 pstart(struct process *pp, int foregnd)
1547 /* We don't use jobflags in this function right now (see below) */
1548 /* long jobflags = 0; */
1551 cleanup_push(&pchild_disabled, disabled_cleanup);
1554 /* We don't use jobflags in this function right now (see below) */
1555 /* jobflags |= np->p_flags; */
1556 if (np->p_flags & (PRUNNING | PSTOPPED)) {
1557 np->p_flags |= PRUNNING;
1558 np->p_flags &= ~PSTOPPED;
1560 np->p_flags |= PFOREGND;
1562 np->p_flags &= ~PFOREGND;
1564 } while ((np = np->p_friends) != pp);
1567 (void) pprint(pp, foregnd ? NAME | JOBDIR : NUMBER | NAME | AMPERSAND);
1569 /* GrP run jobcmd hook if foregrounding */
1571 job_cmd(pp->p_command);
1576 rv = tcsetpgrp(FSHTTY, pp->p_jobid);
1579 * 1. child process of csh (shell script) receives SIGTTIN/SIGTTOU
1580 * 2. parent process (csh) receives SIGCHLD
1581 * 3. The "csh" signal handling function pchild() is invoked
1582 * with a SIGCHLD signal.
1583 * 4. pchild() calls wait3(WNOHANG) which returns 0.
1584 * The child process is NOT ready to be waited for at this time.
1585 * pchild() returns without picking-up the correct status
1586 * for the child process which generated the SIGCHLD.
1587 * 5. CONSEQUENCE : csh is UNaware that the process is stopped
1588 * 6. THIS LINE HAS BEEN COMMENTED OUT : if (jobflags&PSTOPPED)
1589 * (beto@aixwiz.austin.ibm.com - aug/03/91)
1590 * 7. I removed the line completely and added extra checks for
1591 * pstart, so that if a job gets attached to and dies inside
1592 * a debugger it does not confuse the shell. [christos]
1593 * 8. on the nec sx-4 there seems to be a problem, which requires
1594 * a syscall(151, getpid(), getpid()) in osinit. Don't ask me
1595 * what this is doing. [schott@rzg.mpg.de]
1599 rv = killpg(pp->p_jobid, SIGCONT);
1600 #endif /* BSDJOBS */
1601 cleanup_until(&pchild_disabled);
1606 panystop(int neednl)
1611 for (pp = proclist.p_next; pp; pp = pp->p_next)
1612 if (pp->p_flags & PSTOPPED)
1613 stderror(ERR_STOPPED, neednl ? "\n" : "");
1619 struct process *pp, *np;
1621 if (cp == 0 || cp[1] == 0 || eq(cp, STRcent2) || eq(cp, STRcentplus)) {
1622 if (pcurrent == NULL)
1623 stderror(ERR_NAME | ERR_JOBCUR);
1626 if (eq(cp, STRcentminus) || eq(cp, STRcenthash)) {
1627 if (pprevious == NULL)
1628 stderror(ERR_NAME | ERR_JOBPREV);
1631 if (Isdigit(cp[1])) {
1632 int idx = atoi(short2str(cp + 1));
1634 for (pp = proclist.p_next; pp; pp = pp->p_next)
1635 if (pp->p_index == idx && pp->p_procid == pp->p_jobid)
1637 stderror(ERR_NAME | ERR_NOSUCHJOB);
1640 for (pp = proclist.p_next; pp; pp = pp->p_next)
1641 if (pp->p_procid == pp->p_jobid) {
1645 for (dp = pp->p_command; *dp; dp++) {
1648 if (prefix(cp + 2, dp))
1652 else if (prefix(cp + 1, pp->p_command)) {
1655 stderror(ERR_NAME | ERR_AMBIG);
1661 stderror(ERR_NAME | (cp[1] == '?' ? ERR_JOBPAT : ERR_NOSUCHJOB));
1668 * pgetcurr - find most recent job that is not pp, preferably stopped
1670 static struct process *
1671 pgetcurr(struct process *pp)
1674 struct process *xp = NULL;
1676 for (np = proclist.p_next; np; np = np->p_next)
1677 if (np != pcurrent && np != pp && np->p_procid &&
1678 np->p_procid == np->p_jobid) {
1679 if (np->p_flags & PSTOPPED)
1688 * donotify - flag the job so as to report termination asynchronously
1692 donotify(Char **v, struct command *c)
1698 pp->p_flags |= PNOTIFY;
1703 synch_handler(int sno)
1707 #endif /* SIGSYNCH */
1710 * Do the fork and whatever should be done in the child side that
1711 * should not be done if we are not forking at all (like for simple builtin's)
1712 * Also do everything that needs any signals fiddled with in the parent side
1714 * Wanttty tells whether process and/or tty pgrps are to be manipulated:
1715 * -1: leave tty alone; inherit pgrp from parent
1716 * 0: already have tty; manipulate process pgrps only
1717 * 1: want to claim tty; manipulate process and tty pgrps
1718 * It is usually just the value of tpgrp.
1722 pfork(struct command *t, int wanttty)
1728 struct sigaction osa, nsa;
1729 #endif /* SIGSYNCH */
1732 * A child will be uninterruptible only under very special conditions.
1733 * Remember that the semantics of '&' is implemented by disconnecting the
1734 * process from the tty so signals do not need to ignored just for '&'.
1735 * Thus signals are set to default action for children unless: we have had
1736 * an "onintr -" (then specifically ignored) we are not playing with
1737 * signals (inherit action)
1740 ignint = (tpgrp == -1 && (t->t_dflg & F_NOINTERRUPT))
1741 || (gointr && eq(gointr, STRminus));
1744 * Check for maximum nesting of 16 processes to avoid Forking loops
1747 stderror(ERR_NESTING, 16);
1749 nsa.sa_handler = synch_handler;
1750 sigfillset(&nsa.sa_mask);
1751 nsa.sa_flags = SA_RESTART;
1752 if (sigaction(SIGSYNCH, &nsa, &osa))
1753 stderror(ERR_SYSTEM, "pfork: sigaction set", strerror(errno));
1754 #endif /* SIGSYNCH */
1756 * Hold pchild() until we have the process installed in our table.
1760 cleanup_push(&pchild_disabled, disabled_cleanup);
1762 while ((pid = fork()) == -1)
1764 (void) sleep(FORKSLEEP);
1766 stderror(ERR_NOPROC);
1768 (void)cleanup_push_mark(); /* Never to be popped */
1769 pchild_disabled = 0;
1771 pgrp = pcurrjob ? pcurrjob->p_jobid : getpid();
1774 #if !defined(BSDTIMES) && !defined(_SEQUENT_)
1776 #endif /* !defined(BSDTIMES) && !defined(_SEQUENT_) */
1779 setintr = 0; /* until I think otherwise */
1781 * Children just get blown away on SIGINT, SIGQUIT unless "onintr
1784 (void) signal(SIGINT, ignint ? SIG_IGN : SIG_DFL);
1785 (void) signal(SIGQUIT, ignint ? SIG_IGN : SIG_DFL);
1788 /* make stoppable */
1789 (void) signal(SIGTSTP, SIG_DFL);
1790 (void) signal(SIGTTIN, SIG_DFL);
1791 (void) signal(SIGTTOU, SIG_DFL);
1793 #endif /* BSDJOBS */
1794 sigaction(SIGTERM, &parterm, NULL);
1796 else if (tpgrp == -1 && (t->t_dflg & F_NOINTERRUPT)) {
1797 (void) signal(SIGINT, SIG_IGN);
1798 (void) signal(SIGQUIT, SIG_IGN);
1801 signal(SIGIO, SIG_IGN); /* ignore SIGIO in child too */
1804 pgetty(wanttty, pgrp);
1806 * Nohup and nice apply only to NODE_COMMAND's but it would be nice
1807 * (?!?) if you could say "nohup (foo;bar)" Then the parser would have
1808 * to know about nice/nohup/time
1810 if (t->t_dflg & F_NOHUP)
1811 (void) signal(SIGHUP, SIG_IGN);
1812 if (t->t_dflg & F_NICE) {
1813 int nval = SIGN_EXTEND_CHAR(t->t_nice);
1814 #ifdef HAVE_SETPRIORITY
1815 if (setpriority(PRIO_PROCESS, 0, nval) == -1 && errno)
1816 stderror(ERR_SYSTEM, "setpriority", strerror(errno));
1817 #else /* !HAVE_SETPRIORITY */
1819 #endif /* !HAVE_SETPRIORITY */
1822 if (t->t_dflg & F_VER) {
1823 tsetenv(STRSYSTYPE, t->t_systype ? STRbsd43 : STRsys53);
1828 /* rfw 8/89 now parent can continue */
1829 if (kill(getppid(), SIGSYNCH))
1830 stderror(ERR_SYSTEM, "pfork child: kill", strerror(errno));
1831 #endif /* SIGSYNCH */
1838 * `Walking' process group fix from Beto Appleton.
1839 * (beto@aixwiz.austin.ibm.com)
1840 * If setpgid fails at this point that means that
1841 * our process leader has died. We flush the current
1842 * job and become the process leader ourselves.
1843 * The parent will figure that out later.
1845 pgrp = pcurrjob ? pcurrjob->p_jobid : pid;
1846 if (setpgid(pid, pgrp) == -1 && errno == EPERM) {
1849 * We don't care if this causes an error here;
1850 * then we are already in the right process group
1852 (void) setpgid(pid, pgrp = pid);
1855 #endif /* POSIXJOBS */
1859 sigset_t pause_mask;
1862 * rfw 8/89 Wait for child to own terminal. Solves half of ugly
1863 * synchronization problem. With this change, we know that the only
1864 * reason setpgrp to a previous process in a pipeline can fail is that
1865 * the previous process has already exited. Without this hack, he may
1866 * either have exited or not yet started to run. Two uglies become
1869 sigprocmask(SIG_BLOCK, NULL, &pause);
1870 sigdelset(&pause_mask, SIGCHLD);
1871 sigdelset(&pause_mask, SIGSYNCH);
1872 sigsuspend(&pause_mask);
1873 handle_pending_signals();
1874 if (sigaction(SIGSYNCH, &osa, NULL))
1875 stderror(ERR_SYSTEM, "pfork parent: sigaction restore",
1878 #endif /* SIGSYNCH */
1881 cleanup_until(&pchild_disabled);
1890 stderror(ERR_JOBCONTROL);
1892 stderror(ERR_JOBCTRLSUB);
1897 setttypgrp(int pgrp)
1900 * If we are piping out a builtin, eg. 'echo | more' things can go
1901 * out of sequence, i.e. the more can run before the echo. This
1902 * can happen even if we have vfork, since the echo will be forked
1903 * with the regular fork. In this case, we need to set the tty
1904 * pgrp ourselves. If that happens, then the process will be still
1905 * alive. And the tty process group will already be set.
1906 * This should fix the famous sequent problem as a side effect:
1907 * The controlling terminal is lost if all processes in the
1908 * terminal process group are zombies. In this case tcgetpgrp()
1909 * returns 0. If this happens we must set the terminal process
1912 if (tcgetpgrp(FSHTTY) != pgrp) {
1914 struct sigaction old;
1917 * tcsetpgrp will set SIGTTOU to all the the processes in
1918 * the background according to POSIX... We ignore this here.
1920 sigaction(SIGTTOU, NULL, &old);
1921 signal(SIGTTOU, SIG_IGN);
1923 (void) tcsetpgrp(FSHTTY, pgrp);
1925 sigaction(SIGTTOU, &old, NULL);
1933 * if we don't have vfork(), things can still go in the wrong order
1934 * resulting in the famous 'Stopped (tty output)'. But some systems
1935 * don't permit the setpgid() call, (these are more recent secure
1936 * systems such as ibm's aix), when they do. Then we'd rather print
1937 * an error message than hang the shell!
1938 * I am open to suggestions how to fix that.
1941 pgetty(int wanttty, pid_t pgrp)
1946 # endif /* POSIXJOBS */
1948 jobdebug_xprintf(("wanttty %d pid %d opgrp%d pgrp %d tpgrp %d\n",
1949 wanttty, (int)getpid(), (int)pgrp, (int)mygetpgrp(),
1950 (int)tcgetpgrp(FSHTTY)));
1953 * christos: I am blocking the tty signals till I've set things
1958 sigaddset(&set, SIGTSTP);
1959 sigaddset(&set, SIGTTIN);
1960 (void)sigprocmask(SIG_BLOCK, &set, &oset);
1961 cleanup_push(&oset, sigprocmask_cleanup);
1963 # endif /* POSIXJOBS */
1968 # endif /* !POSIXJOBS */
1971 * From: Michael Schroeder <mlschroe@immd4.informatik.uni-erlangen.de>
1972 * Don't check for tpgrp >= 0 so even non-interactive shells give
1973 * background jobs process groups Same for the comparison in the other part
1977 if (setpgid(0, pgrp) == -1) {
1979 /* Walking process group fix; see above */
1980 if (setpgid(0, pgrp = getpid()) == -1) {
1981 # endif /* POSIXJOBS */
1982 stderror(ERR_SYSTEM, "setpgid child:\n", strerror(errno));
1986 wanttty = pgrp; /* Now we really want the tty, since we became the
1987 * the process group leader
1989 # endif /* POSIXJOBS */
1996 cleanup_until(&oset);
1998 # endif /* POSIXJOBS */
2000 jobdebug_xprintf(("wanttty %d pid %d pgrp %d tpgrp %d\n",
2001 wanttty, getpid(), mygetpgrp(), tcgetpgrp(FSHTTY)));
2004 tpgrp = 0; /* gave tty away */
2005 #endif /* BSDJOBS */