Annotation of src/usr.bin/make/job.c, Revision 1.7
1.7 ! millert 1: /* $OpenBSD: job.c,v 1.6 1996/11/30 21:08:56 millert Exp $ */
1.6 millert 2: /* $NetBSD: job.c,v 1.16 1996/11/06 17:59:08 christos Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
6: * Copyright (c) 1988, 1989 by Adam de Boor
7: * Copyright (c) 1989 by Berkeley Softworks
8: * All rights reserved.
9: *
10: * This code is derived from software contributed to Berkeley by
11: * Adam de Boor.
12: *
13: * Redistribution and use in source and binary forms, with or without
14: * modification, are permitted provided that the following conditions
15: * are met:
16: * 1. Redistributions of source code must retain the above copyright
17: * notice, this list of conditions and the following disclaimer.
18: * 2. Redistributions in binary form must reproduce the above copyright
19: * notice, this list of conditions and the following disclaimer in the
20: * documentation and/or other materials provided with the distribution.
21: * 3. All advertising materials mentioning features or use of this software
22: * must display the following acknowledgement:
23: * This product includes software developed by the University of
24: * California, Berkeley and its contributors.
25: * 4. Neither the name of the University nor the names of its contributors
26: * may be used to endorse or promote products derived from this software
27: * without specific prior written permission.
28: *
29: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39: * SUCH DAMAGE.
40: */
41:
42: #ifndef lint
43: #if 0
1.6 millert 44: static char sccsid[] = "@(#)job.c 8.2 (Berkeley) 3/19/94";
1.1 deraadt 45: #else
1.7 ! millert 46: static char rcsid[] = "$OpenBSD: job.c,v 1.6 1996/11/30 21:08:56 millert Exp $";
1.1 deraadt 47: #endif
48: #endif /* not lint */
49:
50: /*-
51: * job.c --
52: * handle the creation etc. of our child processes.
53: *
54: * Interface:
55: * Job_Make Start the creation of the given target.
56: *
57: * Job_CatchChildren Check for and handle the termination of any
58: * children. This must be called reasonably
59: * frequently to keep the whole make going at
60: * a decent clip, since job table entries aren't
61: * removed until their process is caught this way.
62: * Its single argument is TRUE if the function
63: * should block waiting for a child to terminate.
64: *
65: * Job_CatchOutput Print any output our children have produced.
66: * Should also be called fairly frequently to
67: * keep the user informed of what's going on.
68: * If no output is waiting, it will block for
69: * a time given by the SEL_* constants, below,
70: * or until output is ready.
71: *
72: * Job_Init Called to intialize this module. in addition,
73: * any commands attached to the .BEGIN target
74: * are executed before this function returns.
75: * Hence, the makefile must have been parsed
76: * before this function is called.
77: *
78: * Job_Full Return TRUE if the job table is filled.
79: *
80: * Job_Empty Return TRUE if the job table is completely
81: * empty.
82: *
83: * Job_ParseShell Given the line following a .SHELL target, parse
84: * the line as a shell specification. Returns
85: * FAILURE if the spec was incorrect.
86: *
87: * Job_End Perform any final processing which needs doing.
88: * This includes the execution of any commands
89: * which have been/were attached to the .END
90: * target. It should only be called when the
91: * job table is empty.
92: *
93: * Job_AbortAll Abort all currently running jobs. It doesn't
94: * handle output or do anything for the jobs,
95: * just kills them. It should only be called in
96: * an emergency, as it were.
97: *
98: * Job_CheckCommands Verify that the commands for a target are
99: * ok. Provide them if necessary and possible.
100: *
101: * Job_Touch Update a target without really updating it.
102: *
103: * Job_Wait Wait for all currently-running jobs to finish.
104: */
105:
106: #include <sys/types.h>
107: #include <sys/stat.h>
108: #include <sys/file.h>
109: #include <sys/time.h>
110: #include <sys/wait.h>
111: #include <fcntl.h>
112: #include <errno.h>
1.3 niklas 113: #include <utime.h>
1.1 deraadt 114: #include <stdio.h>
115: #include <string.h>
116: #include <signal.h>
117: #include "make.h"
118: #include "hash.h"
119: #include "dir.h"
120: #include "job.h"
121: #include "pathnames.h"
1.2 deraadt 122: #ifdef REMOTE
123: #include "rmt.h"
1.6 millert 124: # define STATIC
1.2 deraadt 125: #else
126: # define STATIC static
127: #endif
1.1 deraadt 128:
129: extern int errno;
130:
131: /*
1.6 millert 132: * error handling variables
1.1 deraadt 133: */
134: static int errors = 0; /* number of errors reported */
135: static int aborting = 0; /* why is the make aborting? */
136: #define ABORT_ERROR 1 /* Because of an error */
137: #define ABORT_INTERRUPT 2 /* Because it was interrupted */
138: #define ABORT_WAIT 3 /* Waiting for jobs to finish */
139:
1.6 millert 140: /*
1.2 deraadt 141: * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
142: * is a char! So when we go above 127 we turn negative!
143: */
144: #define FILENO(a) ((unsigned) fileno(a))
1.1 deraadt 145:
146: /*
147: * post-make command processing. The node postCommands is really just the
148: * .END target but we keep it around to avoid having to search for it
149: * all the time.
150: */
151: static GNode *postCommands; /* node containing commands to execute when
152: * everything else is done */
153: static int numCommands; /* The number of commands actually printed
154: * for a target. Should this number be
155: * 0, no shell will be executed. */
156:
157: /*
158: * Return values from JobStart.
159: */
160: #define JOB_RUNNING 0 /* Job is running */
161: #define JOB_ERROR 1 /* Error in starting the job */
162: #define JOB_FINISHED 2 /* The job is already finished */
163: #define JOB_STOPPED 3 /* The job is stopped */
164:
165: /*
166: * tfile is the name of a file into which all shell commands are put. It is
1.7 ! millert 167: * used over by removing it before the child shell is executed. The XXXXXXXXXX
! 168: * in the string are replaced by mkstemp(3).
1.1 deraadt 169: */
1.7 ! millert 170: static char tfile[sizeof(TMPPAT)];
1.1 deraadt 171:
172:
173: /*
174: * Descriptions for various shells.
175: */
176: static Shell shells[] = {
177: /*
178: * CSH description. The csh can do echo control by playing
179: * with the setting of the 'echo' shell variable. Sadly,
180: * however, it is unable to do error control nicely.
181: */
182: {
183: "csh",
184: TRUE, "unset verbose", "set verbose", "unset verbose", 10,
185: FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"",
186: "v", "e",
187: },
188: /*
189: * SH description. Echo control is also possible and, under
190: * sun UNIX anyway, one can even control error checking.
191: */
192: {
193: "sh",
194: TRUE, "set -", "set -v", "set -", 5,
1.2 deraadt 195: TRUE, "set -e", "set +e",
196: #ifdef OLDBOURNESHELL
1.1 deraadt 197: FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
1.2 deraadt 198: #endif
1.1 deraadt 199: "v", "e",
200: },
201: /*
202: * UNKNOWN.
203: */
204: {
1.2 deraadt 205: (char *) 0,
206: FALSE, (char *) 0, (char *) 0, (char *) 0, 0,
207: FALSE, (char *) 0, (char *) 0,
208: (char *) 0, (char *) 0,
1.1 deraadt 209: }
210: };
211: static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
212: * which we pass all
213: * commands in the Makefile.
214: * It is set by the
215: * Job_ParseShell function */
1.2 deraadt 216: static char *shellPath = NULL, /* full pathname of
1.1 deraadt 217: * executable image */
218: *shellName; /* last component of shell */
219:
220:
221: static int maxJobs; /* The most children we can run at once */
222: static int maxLocal; /* The most local ones we can have */
1.2 deraadt 223: STATIC int nJobs; /* The number of children currently running */
224: STATIC int nLocal; /* The number of local children */
225: STATIC Lst jobs; /* The structures that describe them */
226: STATIC Boolean jobFull; /* Flag to tell when the job table is full. It
1.1 deraadt 227: * is set TRUE when (1) the total number of
228: * running jobs equals the maximum allowed or
229: * (2) a job can only be run locally, but
230: * nLocal equals maxLocal */
231: #ifndef RMT_WILL_WATCH
232: static fd_set outputs; /* Set of descriptors of pipes connected to
233: * the output channels of children */
234: #endif
235:
1.2 deraadt 236: STATIC GNode *lastNode; /* The node for which output was most recently
1.1 deraadt 237: * produced. */
1.2 deraadt 238: STATIC char *targFmt; /* Format string to use to head output from a
1.1 deraadt 239: * job when it's not the most-recent job heard
240: * from */
1.2 deraadt 241:
242: #ifdef REMOTE
243: # define TARG_FMT "--- %s at %s ---\n" /* Default format */
244: # define MESSAGE(fp, gn) \
245: (void) fprintf(fp, targFmt, gn->name, gn->rem.hname);
246: #else
247: # define TARG_FMT "--- %s ---\n" /* Default format */
248: # define MESSAGE(fp, gn) \
249: (void) fprintf(fp, targFmt, gn->name);
250: #endif
1.1 deraadt 251:
252: /*
253: * When JobStart attempts to run a job remotely but can't, and isn't allowed
254: * to run the job locally, or when Job_CatchChildren detects a job that has
255: * been migrated home, the job is placed on the stoppedJobs queue to be run
1.6 millert 256: * when the next job finishes.
1.1 deraadt 257: */
1.2 deraadt 258: STATIC Lst stoppedJobs; /* Lst of Job structures describing
1.1 deraadt 259: * jobs that were stopped due to concurrency
260: * limits or migration home */
261:
262:
263: #if defined(USE_PGRP) && defined(SYSV)
1.2 deraadt 264: # define KILL(pid, sig) killpg(-(pid), (sig))
1.1 deraadt 265: #else
266: # if defined(USE_PGRP)
1.2 deraadt 267: # define KILL(pid, sig) killpg((pid), (sig))
1.1 deraadt 268: # else
1.2 deraadt 269: # define KILL(pid, sig) kill((pid), (sig))
1.1 deraadt 270: # endif
271: #endif
272:
1.6 millert 273: /*
1.2 deraadt 274: * Grmpf... There is no way to set bits of the wait structure
275: * anymore with the stupid W*() macros. I liked the union wait
276: * stuff much more. So, we devise our own macros... This is
277: * really ugly, use dramamine sparingly. You have been warned.
278: */
279: #define W_SETMASKED(st, val, fun) \
280: { \
281: int sh = (int) ~0; \
282: int mask = fun(sh); \
283: \
284: for (sh = 0; ((mask >> sh) & 1) == 0; sh++) \
285: continue; \
286: *(st) = (*(st) & ~mask) | ((val) << sh); \
287: }
288:
289: #define W_SETTERMSIG(st, val) W_SETMASKED(st, val, WTERMSIG)
290: #define W_SETEXITSTATUS(st, val) W_SETMASKED(st, val, WEXITSTATUS)
291:
292:
1.1 deraadt 293: static int JobCondPassSig __P((ClientData, ClientData));
294: static void JobPassSig __P((int));
295: static int JobCmpPid __P((ClientData, ClientData));
296: static int JobPrintCommand __P((ClientData, ClientData));
297: static int JobSaveCommand __P((ClientData, ClientData));
1.2 deraadt 298: static void JobClose __P((Job *));
299: #ifdef REMOTE
300: static int JobCmpRmtID __P((Job *, int));
301: # ifdef RMT_WILL_WATCH
302: static void JobLocalInput __P((int, Job *));
303: # endif
304: #else
305: static void JobFinish __P((Job *, int *));
1.1 deraadt 306: static void JobExec __P((Job *, char **));
1.2 deraadt 307: #endif
1.1 deraadt 308: static void JobMakeArgv __P((Job *, char **));
309: static void JobRestart __P((Job *));
310: static int JobStart __P((GNode *, int, Job *));
1.6 millert 311: static char *JobOutput __P((Job *, char *, char *, int));
1.1 deraadt 312: static void JobDoOutput __P((Job *, Boolean));
313: static Shell *JobMatchShell __P((char *));
1.2 deraadt 314: static void JobInterrupt __P((int, int));
315: static void JobRestartJobs __P((void));
1.1 deraadt 316:
317: /*-
318: *-----------------------------------------------------------------------
319: * JobCondPassSig --
320: * Pass a signal to a job if the job is remote or if USE_PGRP
321: * is defined.
322: *
323: * Results:
324: * === 0
325: *
326: * Side Effects:
327: * None, except the job may bite it.
328: *
329: *-----------------------------------------------------------------------
330: */
331: static int
332: JobCondPassSig(jobp, signop)
333: ClientData jobp; /* Job to biff */
334: ClientData signop; /* Signal to send it */
335: {
336: Job *job = (Job *) jobp;
337: int signo = *(int *) signop;
338: #ifdef RMT_WANTS_SIGNALS
339: if (job->flags & JOB_REMOTE) {
1.2 deraadt 340: (void) Rmt_Signal(job, signo);
1.1 deraadt 341: } else {
342: KILL(job->pid, signo);
343: }
344: #else
345: /*
346: * Assume that sending the signal to job->pid will signal any remote
347: * job as well.
348: */
1.2 deraadt 349: if (DEBUG(JOB)) {
1.6 millert 350: (void) fprintf(stdout,
1.2 deraadt 351: "JobCondPassSig passing signal %d to child %d.\n",
352: signo, job->pid);
353: (void) fflush(stdout);
354: }
1.1 deraadt 355: KILL(job->pid, signo);
356: #endif
1.2 deraadt 357: return 0;
1.1 deraadt 358: }
359:
360: /*-
361: *-----------------------------------------------------------------------
362: * JobPassSig --
363: * Pass a signal on to all remote jobs and to all local jobs if
364: * USE_PGRP is defined, then die ourselves.
365: *
366: * Results:
367: * None.
368: *
369: * Side Effects:
370: * We die by the same signal.
1.6 millert 371: *
1.1 deraadt 372: *-----------------------------------------------------------------------
373: */
374: static void
375: JobPassSig(signo)
376: int signo; /* The signal number we've received */
377: {
1.2 deraadt 378: sigset_t nmask, omask;
1.3 niklas 379: struct sigaction act;
1.6 millert 380:
1.2 deraadt 381: if (DEBUG(JOB)) {
382: (void) fprintf(stdout, "JobPassSig(%d) called.\n", signo);
383: (void) fflush(stdout);
384: }
385: Lst_ForEach(jobs, JobCondPassSig, (ClientData) &signo);
1.1 deraadt 386:
387: /*
388: * Deal with proper cleanup based on the signal received. We only run
389: * the .INTERRUPT target if the signal was in fact an interrupt. The other
390: * three termination signals are more of a "get out *now*" command.
391: */
392: if (signo == SIGINT) {
1.2 deraadt 393: JobInterrupt(TRUE, signo);
1.1 deraadt 394: } else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) {
1.2 deraadt 395: JobInterrupt(FALSE, signo);
1.1 deraadt 396: }
1.6 millert 397:
1.1 deraadt 398: /*
399: * Leave gracefully if SIGQUIT, rather than core dumping.
400: */
401: if (signo == SIGQUIT) {
402: Finish(0);
403: }
1.6 millert 404:
1.1 deraadt 405: /*
406: * Send ourselves the signal now we've given the message to everyone else.
407: * Note we block everything else possible while we're getting the signal.
408: * This ensures that all our jobs get continued when we wake up before
409: * we take any other signal.
410: */
1.3 niklas 411: sigemptyset(&nmask);
412: sigaddset(&nmask, signo);
413: sigprocmask(SIG_SETMASK, &nmask, &omask);
414: act.sa_handler = SIG_DFL;
415: sigemptyset(&act.sa_mask);
416: act.sa_flags = 0;
417: sigaction(signo, &act, NULL);
1.2 deraadt 418:
419: if (DEBUG(JOB)) {
420: (void) fprintf(stdout,
421: "JobPassSig passing signal to self, mask = %x.\n",
422: ~0 & ~(1 << (signo-1)));
423: (void) fflush(stdout);
424: }
425: (void) signal(signo, SIG_DFL);
1.1 deraadt 426:
1.2 deraadt 427: (void) KILL(getpid(), signo);
1.1 deraadt 428:
429: signo = SIGCONT;
430: Lst_ForEach(jobs, JobCondPassSig, (ClientData) &signo);
431:
1.2 deraadt 432: (void) sigprocmask(SIG_SETMASK, &omask, NULL);
1.3 niklas 433: sigprocmask(SIG_SETMASK, &omask, NULL);
434: act.sa_handler = JobPassSig;
435: sigaction(signo, &act, NULL);
1.1 deraadt 436: }
437:
438: /*-
439: *-----------------------------------------------------------------------
440: * JobCmpPid --
441: * Compare the pid of the job with the given pid and return 0 if they
442: * are equal. This function is called from Job_CatchChildren via
443: * Lst_Find to find the job descriptor of the finished job.
444: *
445: * Results:
446: * 0 if the pid's match
447: *
448: * Side Effects:
449: * None
450: *-----------------------------------------------------------------------
451: */
452: static int
1.2 deraadt 453: JobCmpPid(job, pid)
1.1 deraadt 454: ClientData job; /* job to examine */
455: ClientData pid; /* process id desired */
456: {
1.6 millert 457: return *(int *) pid - ((Job *) job)->pid;
1.1 deraadt 458: }
459:
1.2 deraadt 460: #ifdef REMOTE
461: /*-
462: *-----------------------------------------------------------------------
463: * JobCmpRmtID --
464: * Compare the rmtID of the job with the given rmtID and return 0 if they
1.6 millert 465: * are equal.
1.2 deraadt 466: *
467: * Results:
468: * 0 if the rmtID's match
469: *
470: * Side Effects:
471: * None.
472: *-----------------------------------------------------------------------
473: */
474: static int
475: JobCmpRmtID(job, rmtID)
476: ClientData job; /* job to examine */
477: ClientData rmtID; /* remote id desired */
478: {
479: return(*(int *) rmtID - *(int *) job->rmtID);
480: }
481: #endif
482:
1.1 deraadt 483: /*-
484: *-----------------------------------------------------------------------
485: * JobPrintCommand --
486: * Put out another command for the given job. If the command starts
487: * with an @ or a - we process it specially. In the former case,
488: * so long as the -s and -n flags weren't given to make, we stick
489: * a shell-specific echoOff command in the script. In the latter,
490: * we ignore errors for the entire job, unless the shell has error
491: * control.
492: * If the command is just "..." we take all future commands for this
493: * job to be commands to be executed once the entire graph has been
494: * made and return non-zero to signal that the end of the commands
495: * was reached. These commands are later attached to the postCommands
496: * node and executed by Job_End when all things are done.
497: * This function is called from JobStart via Lst_ForEach.
498: *
499: * Results:
500: * Always 0, unless the command was "..."
501: *
502: * Side Effects:
503: * If the command begins with a '-' and the shell has no error control,
504: * the JOB_IGNERR flag is set in the job descriptor.
505: * If the command is "..." and we're not ignoring such things,
506: * tailCmds is set to the successor node of the cmd.
507: * numCommands is incremented if the command is actually printed.
508: *-----------------------------------------------------------------------
509: */
510: static int
1.2 deraadt 511: JobPrintCommand(cmdp, jobp)
1.1 deraadt 512: ClientData cmdp; /* command string to print */
513: ClientData jobp; /* job for which to print it */
514: {
515: Boolean noSpecials; /* true if we shouldn't worry about
516: * inserting special commands into
517: * the input stream. */
518: Boolean shutUp = FALSE; /* true if we put a no echo command
519: * into the command file */
520: Boolean errOff = FALSE; /* true if we turned error checking
521: * off before printing the command
522: * and need to turn it back on */
523: char *cmdTemplate; /* Template to use when printing the
524: * command */
525: char *cmdStart; /* Start of expanded command */
526: LstNode cmdNode; /* Node for replacing the command */
527: char *cmd = (char *) cmdp;
1.6 millert 528: Job *job = (Job *) jobp;
1.1 deraadt 529:
1.2 deraadt 530: noSpecials = (noExecute && !(job->node->type & OP_MAKE));
1.1 deraadt 531:
1.2 deraadt 532: if (strcmp(cmd, "...") == 0) {
1.6 millert 533: job->node->type |= OP_SAVE_CMDS;
1.1 deraadt 534: if ((job->flags & JOB_IGNDOTS) == 0) {
1.2 deraadt 535: job->tailCmds = Lst_Succ(Lst_Member(job->node->commands,
536: (ClientData)cmd));
1.6 millert 537: return 1;
1.2 deraadt 538: }
1.6 millert 539: return 0;
1.1 deraadt 540: }
541:
1.2 deraadt 542: #define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \
543: (void) fprintf(stdout, fmt, arg); \
544: (void) fflush(stdout); \
545: } \
546: (void) fprintf(job->cmdFILE, fmt, arg); \
547: (void) fflush(job->cmdFILE);
1.1 deraadt 548:
549: numCommands += 1;
550:
551: /*
552: * For debugging, we replace each command with the result of expanding
553: * the variables in the command.
554: */
1.2 deraadt 555: cmdNode = Lst_Member(job->node->commands, (ClientData)cmd);
556: cmdStart = cmd = Var_Subst(NULL, cmd, job->node, FALSE);
557: Lst_Replace(cmdNode, (ClientData)cmdStart);
1.1 deraadt 558:
559: cmdTemplate = "%s\n";
560:
561: /*
562: * Check for leading @' and -'s to control echoing and error checking.
563: */
564: while (*cmd == '@' || *cmd == '-') {
565: if (*cmd == '@') {
566: shutUp = TRUE;
567: } else {
568: errOff = TRUE;
569: }
570: cmd++;
571: }
572:
573: while (isspace((unsigned char) *cmd))
574: cmd++;
575:
576: if (shutUp) {
1.2 deraadt 577: if (!(job->flags & JOB_SILENT) && !noSpecials &&
1.1 deraadt 578: commandShell->hasEchoCtl) {
1.2 deraadt 579: DBPRINTF("%s\n", commandShell->echoOff);
1.1 deraadt 580: } else {
581: shutUp = FALSE;
582: }
583: }
584:
585: if (errOff) {
1.2 deraadt 586: if ( !(job->flags & JOB_IGNERR) && !noSpecials) {
1.1 deraadt 587: if (commandShell->hasErrCtl) {
588: /*
589: * we don't want the error-control commands showing
590: * up either, so we turn off echoing while executing
591: * them. We could put another field in the shell
592: * structure to tell JobDoOutput to look for this
593: * string too, but why make it any more complex than
594: * it already is?
595: */
1.2 deraadt 596: if (!(job->flags & JOB_SILENT) && !shutUp &&
1.1 deraadt 597: commandShell->hasEchoCtl) {
1.2 deraadt 598: DBPRINTF("%s\n", commandShell->echoOff);
599: DBPRINTF("%s\n", commandShell->ignErr);
600: DBPRINTF("%s\n", commandShell->echoOn);
1.1 deraadt 601: } else {
1.2 deraadt 602: DBPRINTF("%s\n", commandShell->ignErr);
1.1 deraadt 603: }
604: } else if (commandShell->ignErr &&
1.2 deraadt 605: (*commandShell->ignErr != '\0'))
1.1 deraadt 606: {
607: /*
608: * The shell has no error control, so we need to be
609: * weird to get it to ignore any errors from the command.
610: * If echoing is turned on, we turn it off and use the
611: * errCheck template to echo the command. Leave echoing
612: * off so the user doesn't see the weirdness we go through
613: * to ignore errors. Set cmdTemplate to use the weirdness
614: * instead of the simple "%s\n" template.
615: */
1.2 deraadt 616: if (!(job->flags & JOB_SILENT) && !shutUp &&
1.1 deraadt 617: commandShell->hasEchoCtl) {
1.2 deraadt 618: DBPRINTF("%s\n", commandShell->echoOff);
619: DBPRINTF(commandShell->errCheck, cmd);
1.1 deraadt 620: shutUp = TRUE;
621: }
622: cmdTemplate = commandShell->ignErr;
623: /*
1.6 millert 624: * The error ignoration (hee hee) is already taken care
1.1 deraadt 625: * of by the ignErr template, so pretend error checking
626: * is still on.
627: */
628: errOff = FALSE;
629: } else {
630: errOff = FALSE;
631: }
632: } else {
633: errOff = FALSE;
634: }
635: }
1.6 millert 636:
1.2 deraadt 637: DBPRINTF(cmdTemplate, cmd);
1.6 millert 638:
1.1 deraadt 639: if (errOff) {
640: /*
641: * If echoing is already off, there's no point in issuing the
642: * echoOff command. Otherwise we issue it and pretend it was on
643: * for the whole command...
644: */
645: if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
1.2 deraadt 646: DBPRINTF("%s\n", commandShell->echoOff);
1.1 deraadt 647: shutUp = TRUE;
648: }
1.2 deraadt 649: DBPRINTF("%s\n", commandShell->errCheck);
1.1 deraadt 650: }
651: if (shutUp) {
1.2 deraadt 652: DBPRINTF("%s\n", commandShell->echoOn);
1.1 deraadt 653: }
1.2 deraadt 654: return 0;
1.1 deraadt 655: }
656:
657: /*-
658: *-----------------------------------------------------------------------
659: * JobSaveCommand --
660: * Save a command to be executed when everything else is done.
661: * Callback function for JobFinish...
662: *
663: * Results:
664: * Always returns 0
665: *
666: * Side Effects:
667: * The command is tacked onto the end of postCommands's commands list.
668: *
669: *-----------------------------------------------------------------------
670: */
671: static int
1.2 deraadt 672: JobSaveCommand(cmd, gn)
1.1 deraadt 673: ClientData cmd;
674: ClientData gn;
675: {
1.2 deraadt 676: cmd = (ClientData) Var_Subst(NULL, (char *) cmd, (GNode *) gn, FALSE);
677: (void) Lst_AtEnd(postCommands->commands, cmd);
678: return(0);
679: }
680:
681:
682: /*-
683: *-----------------------------------------------------------------------
684: * JobClose --
685: * Called to close both input and output pipes when a job is finished.
686: *
687: * Results:
688: * Nada
689: *
690: * Side Effects:
691: * The file descriptors associated with the job are closed.
692: *
693: *-----------------------------------------------------------------------
694: */
695: static void
696: JobClose(job)
697: Job *job;
698: {
699: if (usePipes) {
700: #ifdef RMT_WILL_WATCH
701: Rmt_Ignore(job->inPipe);
702: #else
703: FD_CLR(job->inPipe, &outputs);
704: #endif
705: if (job->outPipe != job->inPipe) {
706: (void) close(job->outPipe);
707: }
708: JobDoOutput(job, TRUE);
709: (void) close(job->inPipe);
710: } else {
711: (void) close(job->outFd);
712: JobDoOutput(job, TRUE);
713: }
1.1 deraadt 714: }
715:
716: /*-
717: *-----------------------------------------------------------------------
718: * JobFinish --
719: * Do final processing for the given job including updating
720: * parents and starting new jobs as available/necessary. Note
721: * that we pay no attention to the JOB_IGNERR flag here.
722: * This is because when we're called because of a noexecute flag
723: * or something, jstat.w_status is 0 and when called from
724: * Job_CatchChildren, the status is zeroed if it s/b ignored.
725: *
726: * Results:
727: * None
728: *
729: * Side Effects:
730: * Some nodes may be put on the toBeMade queue.
731: * Final commands for the job are placed on postCommands.
732: *
1.6 millert 733: * If we got an error and are aborting (aborting == ABORT_ERROR) and
1.1 deraadt 734: * the job list is now empty, we are done for the day.
1.6 millert 735: * If we recognized an error (errors !=0), we set the aborting flag
1.1 deraadt 736: * to ABORT_ERROR so no more jobs will be started.
737: *-----------------------------------------------------------------------
738: */
739: /*ARGSUSED*/
740: static void
1.2 deraadt 741: JobFinish(job, status)
742: Job *job; /* job to finish */
743: int *status; /* sub-why job went away */
744: {
745: Boolean done;
746:
747: if ((WIFEXITED(*status) &&
748: (((WEXITSTATUS(*status) != 0) && !(job->flags & JOB_IGNERR)))) ||
749: (WIFSIGNALED(*status) && (WTERMSIG(*status) != SIGCONT)))
1.1 deraadt 750: {
751: /*
752: * If it exited non-zero and either we're doing things our
753: * way or we're not ignoring errors, the job is finished.
754: * Similarly, if the shell died because of a signal
755: * the job is also finished. In these
756: * cases, finish out the job's output before printing the exit
757: * status...
758: */
1.2 deraadt 759: #ifdef REMOTE
760: KILL(job->pid, SIGCONT);
761: #endif
762: JobClose(job);
1.1 deraadt 763: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1.2 deraadt 764: (void) fclose(job->cmdFILE);
1.1 deraadt 765: }
766: done = TRUE;
1.2 deraadt 767: #ifdef REMOTE
768: if (job->flags & JOB_REMOTE)
769: Rmt_Done(job->rmtID, job->node);
770: #endif
771: } else if (WIFEXITED(*status)) {
1.1 deraadt 772: /*
773: * Deal with ignored errors in -B mode. We need to print a message
774: * telling of the ignored error as well as setting status.w_status
775: * to 0 so the next command gets run. To do this, we set done to be
1.2 deraadt 776: * TRUE if in -B mode and the job exited non-zero.
777: */
778: done = WEXITSTATUS(*status) != 0;
1.6 millert 779: /*
1.2 deraadt 780: * Old comment said: "Note we don't
1.1 deraadt 781: * want to close down any of the streams until we know we're at the
1.2 deraadt 782: * end."
783: * But we do. Otherwise when are we going to print the rest of the
784: * stuff?
785: */
786: JobClose(job);
787: #ifdef REMOTE
788: if (job->flags & JOB_REMOTE)
789: Rmt_Done(job->rmtID, job->node);
790: #endif /* REMOTE */
1.1 deraadt 791: } else {
792: /*
793: * No need to close things down or anything.
794: */
795: done = FALSE;
796: }
1.6 millert 797:
1.1 deraadt 798: if (done ||
1.2 deraadt 799: WIFSTOPPED(*status) ||
800: (WIFSIGNALED(*status) && (WTERMSIG(*status) == SIGCONT)) ||
1.1 deraadt 801: DEBUG(JOB))
802: {
803: FILE *out;
1.6 millert 804:
1.2 deraadt 805: if (compatMake && !usePipes && (job->flags & JOB_IGNERR)) {
1.1 deraadt 806: /*
807: * If output is going to a file and this job is ignoring
808: * errors, arrange to have the exit status sent to the
809: * output file as well.
810: */
1.2 deraadt 811: out = fdopen(job->outFd, "w");
1.1 deraadt 812: } else {
813: out = stdout;
814: }
815:
1.2 deraadt 816: if (WIFEXITED(*status)) {
817: if (DEBUG(JOB)) {
818: (void) fprintf(stdout, "Process %d exited.\n", job->pid);
819: (void) fflush(stdout);
820: }
821: if (WEXITSTATUS(*status) != 0) {
1.1 deraadt 822: if (usePipes && job->node != lastNode) {
1.2 deraadt 823: MESSAGE(out, job->node);
1.1 deraadt 824: lastNode = job->node;
825: }
1.2 deraadt 826: (void) fprintf(out, "*** Error code %d%s\n",
827: WEXITSTATUS(*status),
828: (job->flags & JOB_IGNERR) ? "(ignored)" : "");
1.1 deraadt 829:
830: if (job->flags & JOB_IGNERR) {
1.2 deraadt 831: *status = 0;
1.1 deraadt 832: }
833: } else if (DEBUG(JOB)) {
834: if (usePipes && job->node != lastNode) {
1.2 deraadt 835: MESSAGE(out, job->node);
1.1 deraadt 836: lastNode = job->node;
837: }
1.2 deraadt 838: (void) fprintf(out, "*** Completed successfully\n");
839: }
840: } else if (WIFSTOPPED(*status)) {
841: if (DEBUG(JOB)) {
842: (void) fprintf(stdout, "Process %d stopped.\n", job->pid);
843: (void) fflush(stdout);
1.1 deraadt 844: }
845: if (usePipes && job->node != lastNode) {
1.2 deraadt 846: MESSAGE(out, job->node);
1.1 deraadt 847: lastNode = job->node;
848: }
1.2 deraadt 849: if (!(job->flags & JOB_REMIGRATE)) {
1.6 millert 850: (void) fprintf(out, "*** Stopped -- signal %d\n",
851: WSTOPSIG(*status));
1.1 deraadt 852: }
853: job->flags |= JOB_RESUME;
854: (void)Lst_AtEnd(stoppedJobs, (ClientData)job);
1.2 deraadt 855: #ifdef REMOTE
856: if (job->flags & JOB_REMIGRATE)
857: JobRestart(job);
858: #endif
859: (void) fflush(out);
1.1 deraadt 860: return;
1.2 deraadt 861: } else if (WTERMSIG(*status) == SIGCONT) {
1.1 deraadt 862: /*
863: * If the beastie has continued, shift the Job from the stopped
1.6 millert 864: * list to the running one (or re-stop it if concurrency is
1.1 deraadt 865: * exceeded) and go and get another child.
866: */
867: if (job->flags & (JOB_RESUME|JOB_REMIGRATE|JOB_RESTART)) {
868: if (usePipes && job->node != lastNode) {
1.2 deraadt 869: MESSAGE(out, job->node);
1.1 deraadt 870: lastNode = job->node;
871: }
1.2 deraadt 872: (void) fprintf(out, "*** Continued\n");
1.1 deraadt 873: }
1.2 deraadt 874: if (!(job->flags & JOB_CONTINUING)) {
875: if (DEBUG(JOB)) {
876: (void) fprintf(stdout,
877: "Warning: process %d was not continuing.\n",
878: job->pid);
879: (void) fflush(stdout);
880: }
881: #ifdef notdef
882: /*
883: * We don't really want to restart a job from scratch just
884: * because it continued, especially not without killing the
885: * continuing process! That's why this is ifdef'ed out.
886: * FD - 9/17/90
887: */
1.1 deraadt 888: JobRestart(job);
1.2 deraadt 889: #endif
890: }
891: job->flags &= ~JOB_CONTINUING;
892: Lst_AtEnd(jobs, (ClientData)job);
893: nJobs += 1;
894: if (!(job->flags & JOB_REMOTE)) {
895: if (DEBUG(JOB)) {
896: (void) fprintf(stdout,
897: "Process %d is continuing locally.\n",
898: job->pid);
899: (void) fflush(stdout);
900: }
901: nLocal += 1;
1.1 deraadt 902: }
1.2 deraadt 903: if (nJobs == maxJobs) {
904: jobFull = TRUE;
905: if (DEBUG(JOB)) {
906: (void) fprintf(stdout, "Job queue is full.\n");
907: (void) fflush(stdout);
908: }
909: }
910: (void) fflush(out);
911: return;
1.1 deraadt 912: } else {
913: if (usePipes && job->node != lastNode) {
1.2 deraadt 914: MESSAGE(out, job->node);
1.1 deraadt 915: lastNode = job->node;
916: }
1.2 deraadt 917: (void) fprintf(out, "*** Signal %d\n", WTERMSIG(*status));
1.1 deraadt 918: }
919:
1.2 deraadt 920: (void) fflush(out);
1.1 deraadt 921: }
922:
923: /*
924: * Now handle the -B-mode stuff. If the beast still isn't finished,
925: * try and restart the job on the next command. If JobStart says it's
926: * ok, it's ok. If there's an error, this puppy is done.
927: */
1.2 deraadt 928: if (compatMake && (WIFEXITED(*status) &&
929: !Lst_IsAtEnd(job->node->commands))) {
930: switch (JobStart(job->node, job->flags & JOB_IGNDOTS, job)) {
931: case JOB_RUNNING:
932: done = FALSE;
933: break;
934: case JOB_ERROR:
935: done = TRUE;
936: W_SETEXITSTATUS(status, 1);
937: break;
938: case JOB_FINISHED:
939: /*
940: * If we got back a JOB_FINISHED code, JobStart has already
941: * called Make_Update and freed the job descriptor. We set
942: * done to false here to avoid fake cycles and double frees.
943: * JobStart needs to do the update so we can proceed up the
944: * graph when given the -n flag..
945: */
946: done = FALSE;
947: break;
1.1 deraadt 948: }
949: } else {
950: done = TRUE;
951: }
1.6 millert 952:
1.1 deraadt 953:
954: if (done &&
955: (aborting != ABORT_ERROR) &&
956: (aborting != ABORT_INTERRUPT) &&
1.2 deraadt 957: (*status == 0))
1.1 deraadt 958: {
959: /*
960: * As long as we aren't aborting and the job didn't return a non-zero
961: * status that we shouldn't ignore, we call Make_Update to update
962: * the parents. In addition, any saved commands for the node are placed
963: * on the .END target.
964: */
965: if (job->tailCmds != NILLNODE) {
1.2 deraadt 966: Lst_ForEachFrom(job->node->commands, job->tailCmds,
1.1 deraadt 967: JobSaveCommand,
1.2 deraadt 968: (ClientData)job->node);
1.1 deraadt 969: }
970: job->node->made = MADE;
1.2 deraadt 971: Make_Update(job->node);
1.1 deraadt 972: free((Address)job);
1.5 briggs 973: } else if (*status != 0) {
1.1 deraadt 974: errors += 1;
975: free((Address)job);
976: }
977:
1.2 deraadt 978: JobRestartJobs();
1.1 deraadt 979:
980: /*
981: * Set aborting if any error.
982: */
983: if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) {
984: /*
985: * If we found any errors in this batch of children and the -k flag
986: * wasn't given, we set the aborting flag so no more jobs get
987: * started.
988: */
989: aborting = ABORT_ERROR;
990: }
1.6 millert 991:
1.1 deraadt 992: if ((aborting == ABORT_ERROR) && Job_Empty()) {
993: /*
994: * If we are aborting and the job table is now empty, we finish.
995: */
1.2 deraadt 996: (void) eunlink(tfile);
997: Finish(errors);
1.1 deraadt 998: }
999: }
1000:
1001: /*-
1002: *-----------------------------------------------------------------------
1003: * Job_Touch --
1004: * Touch the given target. Called by JobStart when the -t flag was
1005: * given
1006: *
1007: * Results:
1008: * None
1009: *
1010: * Side Effects:
1011: * The data modification of the file is changed. In addition, if the
1012: * file did not exist, it is created.
1013: *-----------------------------------------------------------------------
1014: */
1015: void
1.2 deraadt 1016: Job_Touch(gn, silent)
1.1 deraadt 1017: GNode *gn; /* the node of the file to touch */
1018: Boolean silent; /* TRUE if should not print messages */
1019: {
1020: int streamID; /* ID of stream opened to do the touch */
1.3 niklas 1021: struct utimbuf times; /* Times for utime() call */
1.1 deraadt 1022:
1023: if (gn->type & (OP_JOIN|OP_USE|OP_EXEC|OP_OPTIONAL)) {
1024: /*
1025: * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
1026: * and, as such, shouldn't really be created.
1027: */
1028: return;
1029: }
1.6 millert 1030:
1.1 deraadt 1031: if (!silent) {
1.2 deraadt 1032: (void) fprintf(stdout, "touch %s\n", gn->name);
1033: (void) fflush(stdout);
1.1 deraadt 1034: }
1035:
1036: if (noExecute) {
1037: return;
1038: }
1039:
1040: if (gn->type & OP_ARCHV) {
1.2 deraadt 1041: Arch_Touch(gn);
1.1 deraadt 1042: } else if (gn->type & OP_LIB) {
1.2 deraadt 1043: Arch_TouchLib(gn);
1.1 deraadt 1044: } else {
1045: char *file = gn->path ? gn->path : gn->name;
1046:
1.3 niklas 1047: times.actime = times.modtime = now;
1048: if (utime(file, ×) < 0){
1.2 deraadt 1049: streamID = open(file, O_RDWR | O_CREAT, 0666);
1.1 deraadt 1050:
1051: if (streamID >= 0) {
1052: char c;
1053:
1054: /*
1055: * Read and write a byte to the file to change the
1056: * modification time, then close the file.
1057: */
1058: if (read(streamID, &c, 1) == 1) {
1.2 deraadt 1059: (void) lseek(streamID, 0L, L_SET);
1060: (void) write(streamID, &c, 1);
1.1 deraadt 1061: }
1.6 millert 1062:
1.2 deraadt 1063: (void) close(streamID);
1064: } else {
1065: (void) fprintf(stdout, "*** couldn't touch %s: %s",
1066: file, strerror(errno));
1067: (void) fflush(stdout);
1068: }
1.1 deraadt 1069: }
1070: }
1071: }
1072:
1073: /*-
1074: *-----------------------------------------------------------------------
1075: * Job_CheckCommands --
1.6 millert 1076: * Make sure the given node has all the commands it needs.
1.1 deraadt 1077: *
1078: * Results:
1079: * TRUE if the commands list is/was ok.
1080: *
1081: * Side Effects:
1082: * The node will have commands from the .DEFAULT rule added to it
1083: * if it needs them.
1084: *-----------------------------------------------------------------------
1085: */
1086: Boolean
1.2 deraadt 1087: Job_CheckCommands(gn, abortProc)
1.1 deraadt 1088: GNode *gn; /* The target whose commands need
1089: * verifying */
1.6 millert 1090: void (*abortProc) __P((char *, ...));
1.1 deraadt 1091: /* Function to abort with message */
1092: {
1.2 deraadt 1093: if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
1.1 deraadt 1094: (gn->type & OP_LIB) == 0) {
1095: /*
1096: * No commands. Look for .DEFAULT rule from which we might infer
1.6 millert 1097: * commands
1.1 deraadt 1098: */
1099: if ((DEFAULT != NILGNODE) && !Lst_IsEmpty(DEFAULT->commands)) {
1100: char *p1;
1101: /*
1102: * Make only looks for a .DEFAULT if the node was never the
1103: * target of an operator, so that's what we do too. If
1104: * a .DEFAULT was given, we substitute its commands for gn's
1105: * commands and set the IMPSRC variable to be the target's name
1106: * The DEFAULT node acts like a transformation rule, in that
1107: * gn also inherits any attributes or sources attached to
1108: * .DEFAULT itself.
1109: */
1110: Make_HandleUse(DEFAULT, gn);
1.2 deraadt 1111: Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), gn);
1.1 deraadt 1112: if (p1)
1113: free(p1);
1.2 deraadt 1114: } else if (Dir_MTime(gn) == 0) {
1.1 deraadt 1115: /*
1116: * The node wasn't the target of an operator we have no .DEFAULT
1117: * rule to go on and the target doesn't already exist. There's
1118: * nothing more we can do for this branch. If the -k flag wasn't
1119: * given, we stop in our tracks, otherwise we just don't update
1.6 millert 1120: * this node's parents so they never get examined.
1.1 deraadt 1121: */
1.2 deraadt 1122: static const char msg[] = "make: don't know how to make";
1123:
1.1 deraadt 1124: if (gn->type & OP_OPTIONAL) {
1.2 deraadt 1125: (void) fprintf(stdout, "%s %s(ignored)\n", msg, gn->name);
1126: (void) fflush(stdout);
1.1 deraadt 1127: } else if (keepgoing) {
1.2 deraadt 1128: (void) fprintf(stdout, "%s %s(continuing)\n", msg, gn->name);
1129: (void) fflush(stdout);
1130: return FALSE;
1.1 deraadt 1131: } else {
1.2 deraadt 1132: (*abortProc)("%s %s. Stop", msg, gn->name);
1133: return FALSE;
1.1 deraadt 1134: }
1135: }
1136: }
1.2 deraadt 1137: return TRUE;
1.1 deraadt 1138: }
1139: #ifdef RMT_WILL_WATCH
1140: /*-
1141: *-----------------------------------------------------------------------
1142: * JobLocalInput --
1143: * Handle a pipe becoming readable. Callback function for Rmt_Watch
1144: *
1145: * Results:
1146: * None
1147: *
1148: * Side Effects:
1149: * JobDoOutput is called.
1.6 millert 1150: *
1.1 deraadt 1151: *-----------------------------------------------------------------------
1152: */
1153: /*ARGSUSED*/
1154: static void
1155: JobLocalInput(stream, job)
1.6 millert 1156: int stream; /* Stream that's ready (ignored) */
1.1 deraadt 1157: Job *job; /* Job to which the stream belongs */
1158: {
1159: JobDoOutput(job, FALSE);
1160: }
1161: #endif /* RMT_WILL_WATCH */
1162:
1163: /*-
1164: *-----------------------------------------------------------------------
1165: * JobExec --
1166: * Execute the shell for the given job. Called from JobStart and
1167: * JobRestart.
1168: *
1169: * Results:
1170: * None.
1171: *
1172: * Side Effects:
1173: * A shell is executed, outputs is altered and the Job structure added
1174: * to the job table.
1175: *
1176: *-----------------------------------------------------------------------
1177: */
1178: static void
1179: JobExec(job, argv)
1180: Job *job; /* Job to execute */
1181: char **argv;
1182: {
1183: int cpid; /* ID of new child */
1.6 millert 1184:
1.1 deraadt 1185: if (DEBUG(JOB)) {
1186: int i;
1.6 millert 1187:
1.2 deraadt 1188: (void) fprintf(stdout, "Running %s %sly\n", job->node->name,
1189: job->flags&JOB_REMOTE?"remote":"local");
1190: (void) fprintf(stdout, "\tCommand: ");
1191: for (i = 0; argv[i] != NULL; i++) {
1192: (void) fprintf(stdout, "%s ", argv[i]);
1.1 deraadt 1193: }
1.2 deraadt 1194: (void) fprintf(stdout, "\n");
1195: (void) fflush(stdout);
1.1 deraadt 1196: }
1.6 millert 1197:
1.1 deraadt 1198: /*
1199: * Some jobs produce no output and it's disconcerting to have
1.6 millert 1200: * no feedback of their running (since they produce no output, the
1.1 deraadt 1201: * banner with their name in it never appears). This is an attempt to
1202: * provide that feedback, even if nothing follows it.
1203: */
1204: if ((lastNode != job->node) && (job->flags & JOB_FIRST) &&
1.2 deraadt 1205: !(job->flags & JOB_SILENT)) {
1206: MESSAGE(stdout, job->node);
1.1 deraadt 1207: lastNode = job->node;
1208: }
1.6 millert 1209:
1.1 deraadt 1210: #ifdef RMT_NO_EXEC
1211: if (job->flags & JOB_REMOTE) {
1212: goto jobExecFinish;
1213: }
1214: #endif /* RMT_NO_EXEC */
1215:
1.2 deraadt 1216: if ((cpid = vfork()) == -1) {
1217: Punt("Cannot fork");
1.1 deraadt 1218: } else if (cpid == 0) {
1219:
1220: /*
1221: * Must duplicate the input stream down to the child's input and
1.6 millert 1222: * reset it to the beginning (again). Since the stream was marked
1.1 deraadt 1223: * close-on-exec, we must clear that bit in the new input.
1224: */
1.2 deraadt 1225: if (dup2(FILENO(job->cmdFILE), 0) == -1)
1226: Punt("Cannot dup2: %s", strerror(errno));
1227: (void) fcntl(0, F_SETFD, 0);
1228: (void) lseek(0, 0, L_SET);
1.6 millert 1229:
1.1 deraadt 1230: if (usePipes) {
1231: /*
1232: * Set up the child's output to be routed through the pipe
1233: * we've created for it.
1234: */
1.2 deraadt 1235: if (dup2(job->outPipe, 1) == -1)
1236: Punt("Cannot dup2: %s", strerror(errno));
1.1 deraadt 1237: } else {
1238: /*
1239: * We're capturing output in a file, so we duplicate the
1240: * descriptor to the temporary file into the standard
1241: * output.
1242: */
1.2 deraadt 1243: if (dup2(job->outFd, 1) == -1)
1244: Punt("Cannot dup2: %s", strerror(errno));
1.1 deraadt 1245: }
1246: /*
1247: * The output channels are marked close on exec. This bit was
1.6 millert 1248: * duplicated by the dup2 (on some systems), so we have to clear
1.1 deraadt 1249: * it before routing the shell's error output to the same place as
1250: * its standard output.
1251: */
1.2 deraadt 1252: (void) fcntl(1, F_SETFD, 0);
1253: if (dup2(1, 2) == -1)
1254: Punt("Cannot dup2: %s", strerror(errno));
1.1 deraadt 1255:
1256: #ifdef USE_PGRP
1257: /*
1258: * We want to switch the child into a different process family so
1259: * we can kill it and all its descendants in one fell swoop,
1260: * by killing its process family, but not commit suicide.
1261: */
1.2 deraadt 1262: # if defined(SYSV)
1263: (void) setsid();
1264: # else
1265: (void) setpgid(0, getpid());
1266: # endif
1267: #endif /* USE_PGRP */
1.1 deraadt 1268:
1.2 deraadt 1269: #ifdef REMOTE
1270: if (job->flags & JOB_REMOTE) {
1271: Rmt_Exec(shellPath, argv, FALSE);
1.6 millert 1272: } else
1.2 deraadt 1273: #endif /* REMOTE */
1274: (void) execv(shellPath, argv);
1275:
1276: (void) write(2, "Could not execute shell\n",
1277: sizeof("Could not execute shell"));
1278: _exit(1);
1.1 deraadt 1279: } else {
1.2 deraadt 1280: #ifdef REMOTE
1281: long omask = sigblock(sigmask(SIGCHLD));
1282: #endif
1.1 deraadt 1283: job->pid = cpid;
1284:
1285: if (usePipes && (job->flags & JOB_FIRST) ) {
1286: /*
1287: * The first time a job is run for a node, we set the current
1288: * position in the buffer to the beginning and mark another
1289: * stream to watch in the outputs mask
1290: */
1291: job->curPos = 0;
1.6 millert 1292:
1.1 deraadt 1293: #ifdef RMT_WILL_WATCH
1294: Rmt_Watch(job->inPipe, JobLocalInput, job);
1295: #else
1296: FD_SET(job->inPipe, &outputs);
1297: #endif /* RMT_WILL_WATCH */
1298: }
1299:
1300: if (job->flags & JOB_REMOTE) {
1.2 deraadt 1301: #ifndef REMOTE
1.1 deraadt 1302: job->rmtID = 0;
1.2 deraadt 1303: #else
1304: job->rmtID = Rmt_LastID(job->pid);
1305: #endif /* REMOTE */
1.1 deraadt 1306: } else {
1307: nLocal += 1;
1308: /*
1.2 deraadt 1309: * XXX: Used to not happen if REMOTE. Why?
1.1 deraadt 1310: */
1.2 deraadt 1311: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1312: (void) fclose(job->cmdFILE);
1.1 deraadt 1313: job->cmdFILE = NULL;
1314: }
1315: }
1.2 deraadt 1316: #ifdef REMOTE
1317: (void) sigsetmask(omask);
1318: #endif
1.1 deraadt 1319: }
1320:
1321: #ifdef RMT_NO_EXEC
1.6 millert 1322: jobExecFinish:
1.1 deraadt 1323: #endif
1324: /*
1325: * Now the job is actually running, add it to the table.
1326: */
1327: nJobs += 1;
1.2 deraadt 1328: (void) Lst_AtEnd(jobs, (ClientData)job);
1.1 deraadt 1329: if (nJobs == maxJobs) {
1330: jobFull = TRUE;
1331: }
1332: }
1333:
1334: /*-
1335: *-----------------------------------------------------------------------
1336: * JobMakeArgv --
1337: * Create the argv needed to execute the shell for a given job.
1.6 millert 1338: *
1.1 deraadt 1339: *
1340: * Results:
1341: *
1342: * Side Effects:
1343: *
1344: *-----------------------------------------------------------------------
1345: */
1346: static void
1347: JobMakeArgv(job, argv)
1348: Job *job;
1349: char **argv;
1350: {
1351: int argc;
1352: static char args[10]; /* For merged arguments */
1.6 millert 1353:
1.1 deraadt 1354: argv[0] = shellName;
1355: argc = 1;
1356:
1357: if ((commandShell->exit && (*commandShell->exit != '-')) ||
1358: (commandShell->echo && (*commandShell->echo != '-')))
1359: {
1360: /*
1361: * At least one of the flags doesn't have a minus before it, so
1362: * merge them together. Have to do this because the *(&(@*#*&#$#
1363: * Bourne shell thinks its second argument is a file to source.
1364: * Grrrr. Note the ten-character limitation on the combined arguments.
1365: */
1366: (void)sprintf(args, "-%s%s",
1367: ((job->flags & JOB_IGNERR) ? "" :
1368: (commandShell->exit ? commandShell->exit : "")),
1369: ((job->flags & JOB_SILENT) ? "" :
1370: (commandShell->echo ? commandShell->echo : "")));
1371:
1372: if (args[1]) {
1373: argv[argc] = args;
1374: argc++;
1375: }
1376: } else {
1377: if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
1378: argv[argc] = commandShell->exit;
1379: argc++;
1380: }
1381: if (!(job->flags & JOB_SILENT) && commandShell->echo) {
1382: argv[argc] = commandShell->echo;
1383: argc++;
1384: }
1385: }
1.2 deraadt 1386: argv[argc] = NULL;
1.1 deraadt 1387: }
1388:
1389: /*-
1390: *-----------------------------------------------------------------------
1391: * JobRestart --
1.6 millert 1392: * Restart a job that stopped for some reason.
1.1 deraadt 1393: *
1394: * Results:
1395: * None.
1396: *
1397: * Side Effects:
1398: * jobFull will be set if the job couldn't be run.
1399: *
1400: *-----------------------------------------------------------------------
1401: */
1402: static void
1403: JobRestart(job)
1404: Job *job; /* Job to restart */
1405: {
1.2 deraadt 1406: #ifdef REMOTE
1407: int host;
1408: #endif
1.6 millert 1409:
1.1 deraadt 1410: if (job->flags & JOB_REMIGRATE) {
1.2 deraadt 1411: if (
1412: #ifdef REMOTE
1413: verboseRemigrates ||
1414: #endif
1415: DEBUG(JOB)) {
1416: (void) fprintf(stdout, "*** remigrating %x(%s)\n",
1417: job->pid, job->node->name);
1418: (void) fflush(stdout);
1.1 deraadt 1419: }
1.2 deraadt 1420:
1421: #ifdef REMOTE
1422: if (!Rmt_ReExport(job->pid, job->node, &host)) {
1423: if (verboseRemigrates || DEBUG(JOB)) {
1424: (void) fprintf(stdout, "*** couldn't migrate...\n");
1425: (void) fflush(stdout);
1426: }
1427: #endif
1428: if (nLocal != maxLocal) {
1.1 deraadt 1429: /*
1430: * Job cannot be remigrated, but there's room on the local
1431: * machine, so resume the job and note that another
1432: * local job has started.
1433: */
1.2 deraadt 1434: if (
1435: #ifdef REMOTE
1436: verboseRemigrates ||
1437: #endif
1438: DEBUG(JOB)) {
1439: (void) fprintf(stdout, "*** resuming on local machine\n");
1440: (void) fflush(stdout);
1441: }
1.1 deraadt 1442: KILL(job->pid, SIGCONT);
1443: nLocal +=1;
1.2 deraadt 1444: #ifdef REMOTE
1445: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME|JOB_REMOTE);
1446: job->flags |= JOB_CONTINUING;
1447: #else
1.1 deraadt 1448: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1.2 deraadt 1449: #endif
1.1 deraadt 1450: } else {
1451: /*
1452: * Job cannot be restarted. Mark the table as full and
1453: * place the job back on the list of stopped jobs.
1454: */
1.2 deraadt 1455: if (
1456: #ifdef REMOTE
1457: verboseRemigrates ||
1458: #endif
1459: DEBUG(JOB)) {
1460: (void) fprintf(stdout, "*** holding\n");
1461: (void) fflush(stdout);
1462: }
1.1 deraadt 1463: (void)Lst_AtFront(stoppedJobs, (ClientData)job);
1464: jobFull = TRUE;
1465: if (DEBUG(JOB)) {
1.2 deraadt 1466: (void) fprintf(stdout, "Job queue is full.\n");
1467: (void) fflush(stdout);
1.1 deraadt 1468: }
1469: return;
1.2 deraadt 1470: }
1471: #ifdef REMOTE
1472: } else {
1473: /*
1474: * Clear out the remigrate and resume flags. Set the continuing
1475: * flag so we know later on that the process isn't exiting just
1476: * because of a signal.
1477: */
1478: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1479: job->flags |= JOB_CONTINUING;
1480: job->rmtID = host;
1.1 deraadt 1481: }
1.2 deraadt 1482: #endif
1.6 millert 1483:
1.1 deraadt 1484: (void)Lst_AtEnd(jobs, (ClientData)job);
1485: nJobs += 1;
1486: if (nJobs == maxJobs) {
1487: jobFull = TRUE;
1488: if (DEBUG(JOB)) {
1.2 deraadt 1489: (void) fprintf(stdout, "Job queue is full.\n");
1490: (void) fflush(stdout);
1.1 deraadt 1491: }
1492: }
1493: } else if (job->flags & JOB_RESTART) {
1494: /*
1495: * Set up the control arguments to the shell. This is based on the
1496: * flags set earlier for this job. If the JOB_IGNERR flag is clear,
1497: * the 'exit' flag of the commandShell is used to cause it to exit
1498: * upon receiving an error. If the JOB_SILENT flag is clear, the
1499: * 'echo' flag of the commandShell is used to get it to start echoing
1.6 millert 1500: * as soon as it starts processing commands.
1.1 deraadt 1501: */
1502: char *argv[4];
1.6 millert 1503:
1.1 deraadt 1504: JobMakeArgv(job, argv);
1.2 deraadt 1505:
1.1 deraadt 1506: if (DEBUG(JOB)) {
1.2 deraadt 1507: (void) fprintf(stdout, "Restarting %s...", job->node->name);
1508: (void) fflush(stdout);
1.1 deraadt 1509: }
1.2 deraadt 1510: #ifdef REMOTE
1511: if ((job->node->type&OP_NOEXPORT) ||
1.6 millert 1512: (nLocal < maxLocal && runLocalFirst)
1.2 deraadt 1513: # ifdef RMT_NO_EXEC
1514: || !Rmt_Export(shellPath, argv, job)
1515: # else
1516: || !Rmt_Begin(shellPath, argv, job->node)
1517: # endif
1518: #endif
1519: {
1520: if (((nLocal >= maxLocal) && !(job->flags & JOB_SPECIAL))) {
1.1 deraadt 1521: /*
1522: * Can't be exported and not allowed to run locally -- put it
1523: * back on the hold queue and mark the table full
1524: */
1525: if (DEBUG(JOB)) {
1.2 deraadt 1526: (void) fprintf(stdout, "holding\n");
1527: (void) fflush(stdout);
1.1 deraadt 1528: }
1529: (void)Lst_AtFront(stoppedJobs, (ClientData)job);
1530: jobFull = TRUE;
1531: if (DEBUG(JOB)) {
1.2 deraadt 1532: (void) fprintf(stdout, "Job queue is full.\n");
1533: (void) fflush(stdout);
1.1 deraadt 1534: }
1535: return;
1.2 deraadt 1536: } else {
1.1 deraadt 1537: /*
1538: * Job may be run locally.
1539: */
1540: if (DEBUG(JOB)) {
1.2 deraadt 1541: (void) fprintf(stdout, "running locally\n");
1542: (void) fflush(stdout);
1.1 deraadt 1543: }
1544: job->flags &= ~JOB_REMOTE;
1.2 deraadt 1545: }
1546: }
1547: #ifdef REMOTE
1548: else {
1549: /*
1550: * Can be exported. Hooray!
1551: */
1552: if (DEBUG(JOB)) {
1553: (void) fprintf(stdout, "exporting\n");
1554: (void) fflush(stdout);
1555: }
1556: job->flags |= JOB_REMOTE;
1.1 deraadt 1557: }
1.2 deraadt 1558: #endif
1.1 deraadt 1559: JobExec(job, argv);
1560: } else {
1561: /*
1562: * The job has stopped and needs to be restarted. Why it stopped,
1563: * we don't know...
1564: */
1565: if (DEBUG(JOB)) {
1.2 deraadt 1566: (void) fprintf(stdout, "Resuming %s...", job->node->name);
1567: (void) fflush(stdout);
1.1 deraadt 1568: }
1569: if (((job->flags & JOB_REMOTE) ||
1.2 deraadt 1570: (nLocal < maxLocal) ||
1571: #ifdef REMOTE
1572: (((job->flags & JOB_SPECIAL) &&
1573: (job->node->type & OP_NOEXPORT)) &&
1574: (maxLocal == 0))) &&
1575: #else
1576: ((job->flags & JOB_SPECIAL) &&
1577: (maxLocal == 0))) &&
1578: #endif
1579: (nJobs != maxJobs))
1.1 deraadt 1580: {
1581: /*
1582: * If the job is remote, it's ok to resume it as long as the
1583: * maximum concurrency won't be exceeded. If it's local and
1.6 millert 1584: * we haven't reached the local concurrency limit already (or the
1.1 deraadt 1585: * job must be run locally and maxLocal is 0), it's also ok to
1586: * resume it.
1587: */
1588: Boolean error;
1589: extern int errno;
1.2 deraadt 1590: int status;
1.6 millert 1591:
1.1 deraadt 1592: #ifdef RMT_WANTS_SIGNALS
1593: if (job->flags & JOB_REMOTE) {
1594: error = !Rmt_Signal(job, SIGCONT);
1595: } else
1596: #endif /* RMT_WANTS_SIGNALS */
1597: error = (KILL(job->pid, SIGCONT) != 0);
1598:
1599: if (!error) {
1600: /*
1601: * Make sure the user knows we've continued the beast and
1602: * actually put the thing in the job table.
1603: */
1604: job->flags |= JOB_CONTINUING;
1.2 deraadt 1605: W_SETTERMSIG(&status, SIGCONT);
1606: JobFinish(job, &status);
1.6 millert 1607:
1.1 deraadt 1608: job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
1609: if (DEBUG(JOB)) {
1.2 deraadt 1610: (void) fprintf(stdout, "done\n");
1611: (void) fflush(stdout);
1.1 deraadt 1612: }
1613: } else {
1614: Error("couldn't resume %s: %s",
1615: job->node->name, strerror(errno));
1.2 deraadt 1616: status = 0;
1617: W_SETEXITSTATUS(&status, 1);
1618: JobFinish(job, &status);
1.1 deraadt 1619: }
1620: } else {
1621: /*
1622: * Job cannot be restarted. Mark the table as full and
1623: * place the job back on the list of stopped jobs.
1624: */
1625: if (DEBUG(JOB)) {
1.2 deraadt 1626: (void) fprintf(stdout, "table full\n");
1627: (void) fflush(stdout);
1.1 deraadt 1628: }
1.2 deraadt 1629: (void) Lst_AtFront(stoppedJobs, (ClientData)job);
1.1 deraadt 1630: jobFull = TRUE;
1631: if (DEBUG(JOB)) {
1.2 deraadt 1632: (void) fprintf(stdout, "Job queue is full.\n");
1633: (void) fflush(stdout);
1.1 deraadt 1634: }
1635: }
1636: }
1637: }
1638:
1639: /*-
1640: *-----------------------------------------------------------------------
1641: * JobStart --
1642: * Start a target-creation process going for the target described
1.6 millert 1643: * by the graph node gn.
1.1 deraadt 1644: *
1645: * Results:
1646: * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1647: * if there isn't actually anything left to do for the job and
1648: * JOB_RUNNING if the job has been started.
1649: *
1650: * Side Effects:
1651: * A new Job node is created and added to the list of running
1652: * jobs. PMake is forked and a child shell created.
1653: *-----------------------------------------------------------------------
1654: */
1655: static int
1.2 deraadt 1656: JobStart(gn, flags, previous)
1.1 deraadt 1657: GNode *gn; /* target to create */
1658: int flags; /* flags for the job to override normal ones.
1659: * e.g. JOB_SPECIAL or JOB_IGNDOTS */
1660: Job *previous; /* The previous Job structure for this node,
1661: * if any. */
1662: {
1663: register Job *job; /* new job descriptor */
1664: char *argv[4]; /* Argument vector to shell */
1665: Boolean cmdsOK; /* true if the nodes commands were all right */
1666: Boolean local; /* Set true if the job was run locally */
1667: Boolean noExec; /* Set true if we decide not to run the job */
1668:
1.2 deraadt 1669: if (previous != NULL) {
1670: previous->flags &= ~(JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
1.1 deraadt 1671: job = previous;
1672: } else {
1.2 deraadt 1673: job = (Job *) emalloc(sizeof(Job));
1674: if (job == NULL) {
1.1 deraadt 1675: Punt("JobStart out of memory");
1676: }
1677: flags |= JOB_FIRST;
1678: }
1679:
1680: job->node = gn;
1681: job->tailCmds = NILLNODE;
1682:
1683: /*
1684: * Set the initial value of the flags for this job based on the global
1685: * ones and the node's attributes... Any flags supplied by the caller
1686: * are also added to the field.
1687: */
1688: job->flags = 0;
1.2 deraadt 1689: if (Targ_Ignore(gn)) {
1.1 deraadt 1690: job->flags |= JOB_IGNERR;
1691: }
1.2 deraadt 1692: if (Targ_Silent(gn)) {
1.1 deraadt 1693: job->flags |= JOB_SILENT;
1694: }
1695: job->flags |= flags;
1696:
1697: /*
1698: * Check the commands now so any attributes from .DEFAULT have a chance
1699: * to migrate to the node
1700: */
1.2 deraadt 1701: if (!compatMake && job->flags & JOB_FIRST) {
1.1 deraadt 1702: cmdsOK = Job_CheckCommands(gn, Error);
1703: } else {
1704: cmdsOK = TRUE;
1705: }
1.6 millert 1706:
1.1 deraadt 1707: /*
1.6 millert 1708: * If the -n flag wasn't given, we open up OUR (not the child's)
1.1 deraadt 1709: * temporary file to stuff commands in it. The thing is rd/wr so we don't
1710: * need to reopen it to feed it to the shell. If the -n flag *was* given,
1711: * we just set the file to be stdout. Cute, huh?
1712: */
1713: if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) {
1714: /*
1715: * We're serious here, but if the commands were bogus, we're
1716: * also dead...
1717: */
1718: if (!cmdsOK) {
1719: DieHorribly();
1720: }
1.6 millert 1721:
1.2 deraadt 1722: job->cmdFILE = fopen(tfile, "w+");
1723: if (job->cmdFILE == NULL) {
1724: Punt("Could not open %s", tfile);
1.1 deraadt 1725: }
1.2 deraadt 1726: (void) fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
1.1 deraadt 1727: /*
1728: * Send the commands to the command file, flush all its buffers then
1729: * rewind and remove the thing.
1730: */
1731: noExec = FALSE;
1732:
1733: /*
1734: * used to be backwards; replace when start doing multiple commands
1735: * per shell.
1736: */
1737: if (compatMake) {
1738: /*
1739: * Be compatible: If this is the first time for this node,
1740: * verify its commands are ok and open the commands list for
1741: * sequential access by later invocations of JobStart.
1742: * Once that is done, we take the next command off the list
1743: * and print it to the command file. If the command was an
1744: * ellipsis, note that there's nothing more to execute.
1745: */
1746: if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){
1747: cmdsOK = FALSE;
1748: } else {
1.2 deraadt 1749: LstNode ln = Lst_Next(gn->commands);
1.6 millert 1750:
1.1 deraadt 1751: if ((ln == NILLNODE) ||
1.2 deraadt 1752: JobPrintCommand((ClientData) Lst_Datum(ln),
1753: (ClientData) job))
1.1 deraadt 1754: {
1755: noExec = TRUE;
1.2 deraadt 1756: Lst_Close(gn->commands);
1.1 deraadt 1757: }
1758: if (noExec && !(job->flags & JOB_FIRST)) {
1759: /*
1760: * If we're not going to execute anything, the job
1761: * is done and we need to close down the various
1762: * file descriptors we've opened for output, then
1763: * call JobDoOutput to catch the final characters or
1764: * send the file to the screen... Note that the i/o streams
1765: * are only open if this isn't the first job.
1766: * Note also that this could not be done in
1767: * Job_CatchChildren b/c it wasn't clear if there were
1768: * more commands to execute or not...
1769: */
1.2 deraadt 1770: JobClose(job);
1.1 deraadt 1771: }
1772: }
1773: } else {
1774: /*
1775: * We can do all the commands at once. hooray for sanity
1776: */
1777: numCommands = 0;
1.2 deraadt 1778: Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
1.6 millert 1779:
1.1 deraadt 1780: /*
1781: * If we didn't print out any commands to the shell script,
1782: * there's not much point in executing the shell, is there?
1783: */
1784: if (numCommands == 0) {
1785: noExec = TRUE;
1786: }
1787: }
1788: } else if (noExecute) {
1789: /*
1790: * Not executing anything -- just print all the commands to stdout
1791: * in one fell swoop. This will still set up job->tailCmds correctly.
1792: */
1793: if (lastNode != gn) {
1.2 deraadt 1794: MESSAGE(stdout, gn);
1.1 deraadt 1795: lastNode = gn;
1796: }
1797: job->cmdFILE = stdout;
1798: /*
1799: * Only print the commands if they're ok, but don't die if they're
1800: * not -- just let the user know they're bad and keep going. It
1801: * doesn't do any harm in this case and may do some good.
1802: */
1803: if (cmdsOK) {
1804: Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
1805: }
1806: /*
1807: * Don't execute the shell, thank you.
1808: */
1809: noExec = TRUE;
1810: } else {
1811: /*
1812: * Just touch the target and note that no shell should be executed.
1813: * Set cmdFILE to stdout to make life easier. Check the commands, too,
1814: * but don't die if they're no good -- it does no harm to keep working
1815: * up the graph.
1816: */
1817: job->cmdFILE = stdout;
1.2 deraadt 1818: Job_Touch(gn, job->flags&JOB_SILENT);
1.1 deraadt 1819: noExec = TRUE;
1820: }
1821:
1822: /*
1.6 millert 1823: * If we're not supposed to execute a shell, don't.
1.1 deraadt 1824: */
1825: if (noExec) {
1826: /*
1827: * Unlink and close the command file if we opened one
1828: */
1829: if (job->cmdFILE != stdout) {
1.2 deraadt 1830: (void) eunlink(tfile);
1831: if (job->cmdFILE != NULL)
1832: (void) fclose(job->cmdFILE);
1.1 deraadt 1833: } else {
1.2 deraadt 1834: (void) fflush(stdout);
1.1 deraadt 1835: }
1836:
1837: /*
1838: * We only want to work our way up the graph if we aren't here because
1839: * the commands for the job were no good.
1840: */
1841: if (cmdsOK) {
1842: if (aborting == 0) {
1843: if (job->tailCmds != NILLNODE) {
1844: Lst_ForEachFrom(job->node->commands, job->tailCmds,
1845: JobSaveCommand,
1.2 deraadt 1846: (ClientData)job->node);
1.1 deraadt 1847: }
1848: Make_Update(job->node);
1849: }
1850: free((Address)job);
1851: return(JOB_FINISHED);
1852: } else {
1853: free((Address)job);
1854: return(JOB_ERROR);
1855: }
1856: } else {
1.2 deraadt 1857: (void) fflush(job->cmdFILE);
1858: (void) eunlink(tfile);
1.1 deraadt 1859: }
1860:
1861: /*
1862: * Set up the control arguments to the shell. This is based on the flags
1863: * set earlier for this job.
1864: */
1865: JobMakeArgv(job, argv);
1866:
1867: /*
1868: * If we're using pipes to catch output, create the pipe by which we'll
1869: * get the shell's output. If we're using files, print out that we're
1.7 ! millert 1870: * starting a job and then set up its temporary-file name.
1.1 deraadt 1871: */
1.2 deraadt 1872: if (!compatMake || (job->flags & JOB_FIRST)) {
1.1 deraadt 1873: if (usePipes) {
1874: int fd[2];
1.2 deraadt 1875: if (pipe(fd) == -1)
1876: Punt("Cannot create pipe: %s", strerror(errno));
1.1 deraadt 1877: job->inPipe = fd[0];
1878: job->outPipe = fd[1];
1.2 deraadt 1879: (void) fcntl(job->inPipe, F_SETFD, 1);
1880: (void) fcntl(job->outPipe, F_SETFD, 1);
1.1 deraadt 1881: } else {
1.2 deraadt 1882: (void) fprintf(stdout, "Remaking `%s'\n", gn->name);
1883: (void) fflush(stdout);
1.7 ! millert 1884: (void) strcpy(job->outFile, TMPPAT);
! 1885: if ((job->outFd = mkstemp(job->outFile)) == -1)
! 1886: Punt("Cannot create temp file: %s", strerror(errno));
1.2 deraadt 1887: (void) fcntl(job->outFd, F_SETFD, 1);
1.1 deraadt 1888: }
1889: }
1890:
1.2 deraadt 1891: #ifdef REMOTE
1892: if (!(gn->type & OP_NOEXPORT) && !(runLocalFirst && nLocal < maxLocal)) {
1893: #ifdef RMT_NO_EXEC
1894: local = !Rmt_Export(shellPath, argv, job);
1895: #else
1896: local = !Rmt_Begin(shellPath, argv, job->node);
1897: #endif /* RMT_NO_EXEC */
1898: if (!local) {
1899: job->flags |= JOB_REMOTE;
1900: }
1901: } else
1902: #endif
1903: local = TRUE;
1.1 deraadt 1904:
1905: if (local && (((nLocal >= maxLocal) &&
1.2 deraadt 1906: !(job->flags & JOB_SPECIAL) &&
1907: #ifdef REMOTE
1908: (!(gn->type & OP_NOEXPORT) || (maxLocal != 0))
1909: #else
1910: (maxLocal != 0)
1911: #endif
1912: )))
1.1 deraadt 1913: {
1914: /*
1915: * The job can only be run locally, but we've hit the limit of
1916: * local concurrency, so put the job on hold until some other job
1.6 millert 1917: * finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
1.1 deraadt 1918: * may be run locally even when the local limit has been reached
1.6 millert 1919: * (e.g. when maxLocal == 0), though they will be exported if at
1.2 deraadt 1920: * all possible. In addition, any target marked with .NOEXPORT will
1921: * be run locally if maxLocal is 0.
1.1 deraadt 1922: */
1923: jobFull = TRUE;
1.6 millert 1924:
1.1 deraadt 1925: if (DEBUG(JOB)) {
1.2 deraadt 1926: (void) fprintf(stdout, "Can only run job locally.\n");
1927: (void) fflush(stdout);
1.1 deraadt 1928: }
1929: job->flags |= JOB_RESTART;
1.2 deraadt 1930: (void) Lst_AtEnd(stoppedJobs, (ClientData)job);
1.1 deraadt 1931: } else {
1932: if ((nLocal >= maxLocal) && local) {
1933: /*
1.6 millert 1934: * If we're running this job locally as a special case (see above),
1.1 deraadt 1935: * at least say the table is full.
1936: */
1937: jobFull = TRUE;
1938: if (DEBUG(JOB)) {
1.2 deraadt 1939: (void) fprintf(stdout, "Local job queue is full.\n");
1940: (void) fflush(stdout);
1.1 deraadt 1941: }
1942: }
1943: JobExec(job, argv);
1944: }
1945: return(JOB_RUNNING);
1946: }
1947:
1.6 millert 1948: static char *
1.2 deraadt 1949: JobOutput(job, cp, endp, msg)
1950: register Job *job;
1951: register char *cp, *endp;
1952: int msg;
1953: {
1954: register char *ecp;
1955:
1956: if (commandShell->noPrint) {
1957: ecp = Str_FindSubstring(cp, commandShell->noPrint);
1958: while (ecp != NULL) {
1959: if (cp != ecp) {
1960: *ecp = '\0';
1961: if (msg && job->node != lastNode) {
1962: MESSAGE(stdout, job->node);
1963: lastNode = job->node;
1964: }
1965: /*
1966: * The only way there wouldn't be a newline after
1967: * this line is if it were the last in the buffer.
1968: * however, since the non-printable comes after it,
1969: * there must be a newline, so we don't print one.
1970: */
1971: (void) fprintf(stdout, "%s", cp);
1972: (void) fflush(stdout);
1973: }
1974: cp = ecp + commandShell->noPLen;
1975: if (cp != endp) {
1976: /*
1977: * Still more to print, look again after skipping
1978: * the whitespace following the non-printable
1979: * command....
1980: */
1981: cp++;
1982: while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
1983: cp++;
1984: }
1985: ecp = Str_FindSubstring(cp, commandShell->noPrint);
1986: } else {
1987: return cp;
1988: }
1989: }
1990: }
1991: return cp;
1992: }
1993:
1.1 deraadt 1994: /*-
1995: *-----------------------------------------------------------------------
1996: * JobDoOutput --
1997: * This function is called at different times depending on
1998: * whether the user has specified that output is to be collected
1999: * via pipes or temporary files. In the former case, we are called
2000: * whenever there is something to read on the pipe. We collect more
2001: * output from the given job and store it in the job's outBuf. If
2002: * this makes up a line, we print it tagged by the job's identifier,
2003: * as necessary.
2004: * If output has been collected in a temporary file, we open the
2005: * file and read it line by line, transfering it to our own
2006: * output channel until the file is empty. At which point we
2007: * remove the temporary file.
2008: * In both cases, however, we keep our figurative eye out for the
2009: * 'noPrint' line for the shell from which the output came. If
2010: * we recognize a line, we don't print it. If the command is not
1.6 millert 2011: * alone on the line (the character after it is not \0 or \n), we
1.1 deraadt 2012: * do print whatever follows it.
2013: *
2014: * Results:
2015: * None
2016: *
2017: * Side Effects:
2018: * curPos may be shifted as may the contents of outBuf.
2019: *-----------------------------------------------------------------------
2020: */
1.2 deraadt 2021: STATIC void
2022: JobDoOutput(job, finish)
1.1 deraadt 2023: register Job *job; /* the job whose output needs printing */
2024: Boolean finish; /* TRUE if this is the last time we'll be
2025: * called for this job */
2026: {
2027: Boolean gotNL = FALSE; /* true if got a newline */
1.2 deraadt 2028: Boolean fbuf; /* true if our buffer filled up */
1.1 deraadt 2029: register int nr; /* number of bytes read */
2030: register int i; /* auxiliary index into outBuf */
1.6 millert 2031: register int max; /* limit for i (end of current data) */
2032: int nRead; /* (Temporary) number of bytes read */
1.1 deraadt 2033:
2034: FILE *oFILE; /* Stream pointer to shell's output file */
2035: char inLine[132];
2036:
1.6 millert 2037:
1.1 deraadt 2038: if (usePipes) {
2039: /*
2040: * Read as many bytes as will fit in the buffer.
2041: */
2042: end_loop:
1.2 deraadt 2043: gotNL = FALSE;
2044: fbuf = FALSE;
1.6 millert 2045:
1.2 deraadt 2046: nRead = read(job->inPipe, &job->outBuf[job->curPos],
1.1 deraadt 2047: JOB_BUFSIZE - job->curPos);
2048: if (nRead < 0) {
2049: if (DEBUG(JOB)) {
2050: perror("JobDoOutput(piperead)");
2051: }
2052: nr = 0;
2053: } else {
2054: nr = nRead;
2055: }
2056:
2057: /*
1.6 millert 2058: * If we hit the end-of-file (the job is dead), we must flush its
1.1 deraadt 2059: * remaining output, so pretend we read a newline if there's any
2060: * output remaining in the buffer.
2061: * Also clear the 'finish' flag so we stop looping.
2062: */
2063: if ((nr == 0) && (job->curPos != 0)) {
2064: job->outBuf[job->curPos] = '\n';
2065: nr = 1;
2066: finish = FALSE;
2067: } else if (nr == 0) {
2068: finish = FALSE;
2069: }
1.6 millert 2070:
1.1 deraadt 2071: /*
2072: * Look for the last newline in the bytes we just got. If there is
2073: * one, break out of the loop with 'i' as its index and gotNL set
1.6 millert 2074: * TRUE.
1.1 deraadt 2075: */
2076: max = job->curPos + nr;
2077: for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
2078: if (job->outBuf[i] == '\n') {
2079: gotNL = TRUE;
2080: break;
2081: } else if (job->outBuf[i] == '\0') {
2082: /*
2083: * Why?
2084: */
2085: job->outBuf[i] = ' ';
2086: }
2087: }
1.6 millert 2088:
1.1 deraadt 2089: if (!gotNL) {
2090: job->curPos += nr;
2091: if (job->curPos == JOB_BUFSIZE) {
2092: /*
2093: * If we've run out of buffer space, we have no choice
1.6 millert 2094: * but to print the stuff. sigh.
1.1 deraadt 2095: */
1.2 deraadt 2096: fbuf = TRUE;
1.1 deraadt 2097: i = job->curPos;
2098: }
2099: }
1.2 deraadt 2100: if (gotNL || fbuf) {
1.1 deraadt 2101: /*
2102: * Need to send the output to the screen. Null terminate it
2103: * first, overwriting the newline character if there was one.
1.6 millert 2104: * So long as the line isn't one we should filter (according
1.1 deraadt 2105: * to the shell description), we print the line, preceeded
2106: * by a target banner if this target isn't the same as the
2107: * one for which we last printed something.
2108: * The rest of the data in the buffer are then shifted down
1.6 millert 2109: * to the start of the buffer and curPos is set accordingly.
1.1 deraadt 2110: */
2111: job->outBuf[i] = '\0';
2112: if (i >= job->curPos) {
1.2 deraadt 2113: char *cp;
1.6 millert 2114:
2115: cp = JobOutput(job, job->outBuf, &job->outBuf[i], FALSE);
1.1 deraadt 2116:
2117: /*
2118: * There's still more in that thar buffer. This time, though,
2119: * we know there's no newline at the end, so we add one of
2120: * our own free will.
2121: */
2122: if (*cp != '\0') {
2123: if (job->node != lastNode) {
1.2 deraadt 2124: MESSAGE(stdout, job->node);
1.1 deraadt 2125: lastNode = job->node;
2126: }
1.2 deraadt 2127: (void) fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
2128: (void) fflush(stdout);
1.1 deraadt 2129: }
2130: }
2131: if (i < max - 1) {
2132: /* shift the remaining characters down */
1.6 millert 2133: (void) memcpy(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
2134: job->curPos = max - (i + 1);
2135:
1.1 deraadt 2136: } else {
2137: /*
2138: * We have written everything out, so we just start over
2139: * from the start of the buffer. No copying. No nothing.
2140: */
2141: job->curPos = 0;
2142: }
2143: }
2144: if (finish) {
2145: /*
2146: * If the finish flag is true, we must loop until we hit
1.6 millert 2147: * end-of-file on the pipe. This is guaranteed to happen
2148: * eventually since the other end of the pipe is now closed
2149: * (we closed it explicitly and the child has exited). When
2150: * we do get an EOF, finish will be set FALSE and we'll fall
2151: * through and out.
1.1 deraadt 2152: */
2153: goto end_loop;
2154: }
2155: } else {
2156: /*
2157: * We've been called to retrieve the output of the job from the
2158: * temporary file where it's been squirreled away. This consists of
2159: * opening the file, reading the output line by line, being sure not
2160: * to print the noPrint line for the shell we used, then close and
2161: * remove the temporary file. Very simple.
2162: *
2163: * Change to read in blocks and do FindSubString type things as for
2164: * pipes? That would allow for "@echo -n..."
2165: */
1.2 deraadt 2166: oFILE = fopen(job->outFile, "r");
2167: if (oFILE != NULL) {
2168: (void) fprintf(stdout, "Results of making %s:\n", job->node->name);
2169: (void) fflush(stdout);
2170: while (fgets(inLine, sizeof(inLine), oFILE) != NULL) {
2171: register char *cp, *endp, *oendp;
1.1 deraadt 2172:
2173: cp = inLine;
1.2 deraadt 2174: oendp = endp = inLine + strlen(inLine);
1.1 deraadt 2175: if (endp[-1] == '\n') {
2176: *--endp = '\0';
2177: }
1.2 deraadt 2178: cp = JobOutput(job, inLine, endp, FALSE);
1.1 deraadt 2179:
2180: /*
2181: * There's still more in that thar buffer. This time, though,
2182: * we know there's no newline at the end, so we add one of
2183: * our own free will.
2184: */
1.2 deraadt 2185: (void) fprintf(stdout, "%s", cp);
2186: (void) fflush(stdout);
2187: if (endp != oendp) {
2188: (void) fprintf(stdout, "\n");
2189: (void) fflush(stdout);
1.1 deraadt 2190: }
2191: }
1.2 deraadt 2192: (void) fclose(oFILE);
2193: (void) eunlink(job->outFile);
1.1 deraadt 2194: }
2195: }
2196: }
2197:
2198: /*-
2199: *-----------------------------------------------------------------------
2200: * Job_CatchChildren --
2201: * Handle the exit of a child. Called from Make_Make.
2202: *
2203: * Results:
2204: * none.
2205: *
2206: * Side Effects:
2207: * The job descriptor is removed from the list of children.
2208: *
2209: * Notes:
2210: * We do waits, blocking or not, according to the wisdom of our
2211: * caller, until there are no more children to report. For each
2212: * job, call JobFinish to finish things off. This will take care of
2213: * putting jobs on the stoppedJobs queue.
2214: *
2215: *-----------------------------------------------------------------------
2216: */
2217: void
1.2 deraadt 2218: Job_CatchChildren(block)
1.1 deraadt 2219: Boolean block; /* TRUE if should block on the wait. */
2220: {
2221: int pid; /* pid of dead child */
2222: register Job *job; /* job descriptor for dead child */
2223: LstNode jnode; /* list element for finding job */
1.2 deraadt 2224: int status; /* Exit/termination status */
1.1 deraadt 2225:
2226: /*
2227: * Don't even bother if we know there's no one around.
2228: */
2229: if (nLocal == 0) {
2230: return;
2231: }
1.6 millert 2232:
1.2 deraadt 2233: while ((pid = waitpid((pid_t) -1, &status,
2234: (block?0:WNOHANG)|WUNTRACED)) > 0)
1.1 deraadt 2235: {
1.2 deraadt 2236: if (DEBUG(JOB)) {
2237: (void) fprintf(stdout, "Process %d exited or stopped.\n", pid);
2238: (void) fflush(stdout);
2239: }
1.6 millert 2240:
1.1 deraadt 2241:
1.2 deraadt 2242: jnode = Lst_Find(jobs, (ClientData)&pid, JobCmpPid);
1.1 deraadt 2243:
2244: if (jnode == NILLNODE) {
1.2 deraadt 2245: if (WIFSIGNALED(status) && (WTERMSIG(status) == SIGCONT)) {
1.1 deraadt 2246: jnode = Lst_Find(stoppedJobs, (ClientData) &pid, JobCmpPid);
2247: if (jnode == NILLNODE) {
1.6 millert 2248: Error("Resumed child (%d) not in table", pid);
1.1 deraadt 2249: continue;
2250: }
2251: job = (Job *)Lst_Datum(jnode);
1.2 deraadt 2252: (void) Lst_Remove(stoppedJobs, jnode);
1.1 deraadt 2253: } else {
1.6 millert 2254: Error("Child (%d) not in table?", pid);
1.1 deraadt 2255: continue;
2256: }
2257: } else {
1.2 deraadt 2258: job = (Job *) Lst_Datum(jnode);
2259: (void) Lst_Remove(jobs, jnode);
1.1 deraadt 2260: nJobs -= 1;
2261: if (jobFull && DEBUG(JOB)) {
1.2 deraadt 2262: (void) fprintf(stdout, "Job queue is no longer full.\n");
2263: (void) fflush(stdout);
1.1 deraadt 2264: }
2265: jobFull = FALSE;
1.2 deraadt 2266: #ifdef REMOTE
2267: if (!(job->flags & JOB_REMOTE)) {
2268: if (DEBUG(JOB)) {
2269: (void) fprintf(stdout,
2270: "Job queue has one fewer local process.\n");
2271: (void) fflush(stdout);
2272: }
2273: nLocal -= 1;
2274: }
2275: #else
1.1 deraadt 2276: nLocal -= 1;
1.2 deraadt 2277: #endif
1.1 deraadt 2278: }
2279:
1.2 deraadt 2280: JobFinish(job, &status);
1.1 deraadt 2281: }
2282: }
2283:
2284: /*-
2285: *-----------------------------------------------------------------------
2286: * Job_CatchOutput --
2287: * Catch the output from our children, if we're using
2288: * pipes do so. Otherwise just block time until we get a
1.6 millert 2289: * signal (most likely a SIGCHLD) since there's no point in
1.1 deraadt 2290: * just spinning when there's nothing to do and the reaping
1.6 millert 2291: * of a child can wait for a while.
1.1 deraadt 2292: *
2293: * Results:
1.6 millert 2294: * None
1.1 deraadt 2295: *
2296: * Side Effects:
2297: * Output is read from pipes if we're piping.
2298: * -----------------------------------------------------------------------
2299: */
2300: void
1.2 deraadt 2301: Job_CatchOutput()
1.1 deraadt 2302: {
2303: int nfds;
2304: struct timeval timeout;
2305: fd_set readfds;
2306: register LstNode ln;
2307: register Job *job;
2308: #ifdef RMT_WILL_WATCH
2309: int pnJobs; /* Previous nJobs */
2310: #endif
2311:
1.2 deraadt 2312: (void) fflush(stdout);
1.1 deraadt 2313: #ifdef RMT_WILL_WATCH
2314: pnJobs = nJobs;
2315:
2316: /*
2317: * It is possible for us to be called with nJobs equal to 0. This happens
2318: * if all the jobs finish and a job that is stopped cannot be run
2319: * locally (eg if maxLocal is 0) and cannot be exported. The job will
2320: * be placed back on the stoppedJobs queue, Job_Empty() will return false,
2321: * Make_Run will call us again when there's nothing for which to wait.
2322: * nJobs never changes, so we loop forever. Hence the check. It could
2323: * be argued that we should sleep for a bit so as not to swamp the
2324: * exportation system with requests. Perhaps we should.
2325: *
2326: * NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren
2327: * IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT.
2328: * It may use the variable nLocal to determine if it needs to call
1.6 millert 2329: * Job_CatchChildren (if nLocal is 0, there's nothing for which to
1.1 deraadt 2330: * wait...)
2331: */
2332: while (nJobs != 0 && pnJobs == nJobs) {
2333: Rmt_Wait();
2334: }
2335: #else
2336: if (usePipes) {
2337: readfds = outputs;
2338: timeout.tv_sec = SEL_SEC;
2339: timeout.tv_usec = SEL_USEC;
2340:
1.2 deraadt 2341: if ((nfds = select(FD_SETSIZE, &readfds, (fd_set *) 0,
2342: (fd_set *) 0, &timeout)) <= 0)
1.1 deraadt 2343: return;
1.2 deraadt 2344: else {
2345: if (Lst_Open(jobs) == FAILURE) {
2346: Punt("Cannot open job table");
1.1 deraadt 2347: }
1.2 deraadt 2348: while (nfds && (ln = Lst_Next(jobs)) != NILLNODE) {
2349: job = (Job *) Lst_Datum(ln);
1.1 deraadt 2350: if (FD_ISSET(job->inPipe, &readfds)) {
1.2 deraadt 2351: JobDoOutput(job, FALSE);
1.1 deraadt 2352: nfds -= 1;
2353: }
2354: }
1.2 deraadt 2355: Lst_Close(jobs);
1.1 deraadt 2356: }
2357: }
2358: #endif /* RMT_WILL_WATCH */
2359: }
2360:
2361: /*-
2362: *-----------------------------------------------------------------------
2363: * Job_Make --
2364: * Start the creation of a target. Basically a front-end for
2365: * JobStart used by the Make module.
2366: *
2367: * Results:
2368: * None.
2369: *
2370: * Side Effects:
2371: * Another job is started.
2372: *
2373: *-----------------------------------------------------------------------
2374: */
2375: void
1.2 deraadt 2376: Job_Make(gn)
1.1 deraadt 2377: GNode *gn;
2378: {
1.2 deraadt 2379: (void) JobStart(gn, 0, NULL);
1.1 deraadt 2380: }
2381:
2382: /*-
2383: *-----------------------------------------------------------------------
2384: * Job_Init --
2385: * Initialize the process module
2386: *
2387: * Results:
2388: * none
2389: *
2390: * Side Effects:
2391: * lists and counters are initialized
2392: *-----------------------------------------------------------------------
2393: */
2394: void
1.2 deraadt 2395: Job_Init(maxproc, maxlocal)
1.1 deraadt 2396: int maxproc; /* the greatest number of jobs which may be
2397: * running at one time */
2398: int maxlocal; /* the greatest number of local jobs which may
2399: * be running at once. */
2400: {
2401: GNode *begin; /* node for commands to do at the very start */
1.7 ! millert 2402: int tfd;
1.1 deraadt 2403:
1.7 ! millert 2404: (void) strcpy(tfile, TMPPAT);
! 2405: if ((tfd = mkstemp(tfile)) == -1)
! 2406: Punt("Cannot create temp file: %s", strerror(errno));
! 2407: else
! 2408: (void) close(tfd);
1.1 deraadt 2409:
1.2 deraadt 2410: jobs = Lst_Init(FALSE);
1.1 deraadt 2411: stoppedJobs = Lst_Init(FALSE);
2412: maxJobs = maxproc;
2413: maxLocal = maxlocal;
2414: nJobs = 0;
2415: nLocal = 0;
2416: jobFull = FALSE;
2417:
2418: aborting = 0;
2419: errors = 0;
2420:
2421: lastNode = NILGNODE;
2422:
1.2 deraadt 2423: if (maxJobs == 1
2424: #ifdef REMOTE
2425: || noMessages
2426: #endif
2427: ) {
1.1 deraadt 2428: /*
2429: * If only one job can run at a time, there's no need for a banner,
2430: * no is there?
2431: */
2432: targFmt = "";
2433: } else {
2434: targFmt = TARG_FMT;
2435: }
1.6 millert 2436:
1.2 deraadt 2437: if (shellPath == NULL) {
1.1 deraadt 2438: /*
2439: * The user didn't specify a shell to use, so we are using the
2440: * default one... Both the absolute path and the last component
2441: * must be set. The last component is taken from the 'name' field
2442: * of the default shell description pointed-to by commandShell.
2443: * All default shells are located in _PATH_DEFSHELLDIR.
2444: */
2445: shellName = commandShell->name;
1.2 deraadt 2446: shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
1.1 deraadt 2447: }
2448:
1.2 deraadt 2449: if (commandShell->exit == NULL) {
1.1 deraadt 2450: commandShell->exit = "";
2451: }
1.2 deraadt 2452: if (commandShell->echo == NULL) {
1.1 deraadt 2453: commandShell->echo = "";
2454: }
2455:
2456: /*
2457: * Catch the four signals that POSIX specifies if they aren't ignored.
2458: * JobPassSig will take care of calling JobInterrupt if appropriate.
2459: */
1.2 deraadt 2460: if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
2461: (void) signal(SIGINT, JobPassSig);
1.1 deraadt 2462: }
1.2 deraadt 2463: if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
2464: (void) signal(SIGHUP, JobPassSig);
1.1 deraadt 2465: }
1.2 deraadt 2466: if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
2467: (void) signal(SIGQUIT, JobPassSig);
1.1 deraadt 2468: }
1.2 deraadt 2469: if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
2470: (void) signal(SIGTERM, JobPassSig);
1.1 deraadt 2471: }
2472: /*
2473: * There are additional signals that need to be caught and passed if
2474: * either the export system wants to be told directly of signals or if
1.6 millert 2475: * we're giving each job its own process group (since then it won't get
1.1 deraadt 2476: * signals from the terminal driver as we own the terminal)
2477: */
2478: #if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
1.2 deraadt 2479: if (signal(SIGTSTP, SIG_IGN) != SIG_IGN) {
2480: (void) signal(SIGTSTP, JobPassSig);
1.1 deraadt 2481: }
1.2 deraadt 2482: if (signal(SIGTTOU, SIG_IGN) != SIG_IGN) {
2483: (void) signal(SIGTTOU, JobPassSig);
1.1 deraadt 2484: }
1.2 deraadt 2485: if (signal(SIGTTIN, SIG_IGN) != SIG_IGN) {
2486: (void) signal(SIGTTIN, JobPassSig);
1.1 deraadt 2487: }
1.2 deraadt 2488: if (signal(SIGWINCH, SIG_IGN) != SIG_IGN) {
2489: (void) signal(SIGWINCH, JobPassSig);
1.1 deraadt 2490: }
2491: #endif
1.6 millert 2492:
1.2 deraadt 2493: begin = Targ_FindNode(".BEGIN", TARG_NOCREATE);
1.1 deraadt 2494:
2495: if (begin != NILGNODE) {
1.2 deraadt 2496: JobStart(begin, JOB_SPECIAL, (Job *)0);
1.1 deraadt 2497: while (nJobs) {
2498: Job_CatchOutput();
2499: #ifndef RMT_WILL_WATCH
1.2 deraadt 2500: Job_CatchChildren(!usePipes);
1.1 deraadt 2501: #endif /* RMT_WILL_WATCH */
2502: }
2503: }
1.2 deraadt 2504: postCommands = Targ_FindNode(".END", TARG_CREATE);
1.1 deraadt 2505: }
2506:
2507: /*-
2508: *-----------------------------------------------------------------------
2509: * Job_Full --
2510: * See if the job table is full. It is considered full if it is OR
2511: * if we are in the process of aborting OR if we have
2512: * reached/exceeded our local quota. This prevents any more jobs
2513: * from starting up.
2514: *
2515: * Results:
2516: * TRUE if the job table is full, FALSE otherwise
2517: * Side Effects:
2518: * None.
2519: *-----------------------------------------------------------------------
2520: */
2521: Boolean
1.2 deraadt 2522: Job_Full()
1.1 deraadt 2523: {
1.2 deraadt 2524: return(aborting || jobFull);
1.1 deraadt 2525: }
2526:
2527: /*-
2528: *-----------------------------------------------------------------------
2529: * Job_Empty --
2530: * See if the job table is empty. Because the local concurrency may
2531: * be set to 0, it is possible for the job table to become empty,
2532: * while the list of stoppedJobs remains non-empty. In such a case,
2533: * we want to restart as many jobs as we can.
2534: *
2535: * Results:
2536: * TRUE if it is. FALSE if it ain't.
2537: *
2538: * Side Effects:
2539: * None.
2540: *
2541: * -----------------------------------------------------------------------
2542: */
2543: Boolean
1.2 deraadt 2544: Job_Empty()
1.1 deraadt 2545: {
2546: if (nJobs == 0) {
2547: if (!Lst_IsEmpty(stoppedJobs) && !aborting) {
2548: /*
2549: * The job table is obviously not full if it has no jobs in
2550: * it...Try and restart the stopped jobs.
2551: */
2552: jobFull = FALSE;
1.2 deraadt 2553: JobRestartJobs();
1.1 deraadt 2554: return(FALSE);
2555: } else {
2556: return(TRUE);
2557: }
2558: } else {
2559: return(FALSE);
2560: }
2561: }
2562:
2563: /*-
2564: *-----------------------------------------------------------------------
2565: * JobMatchShell --
2566: * Find a matching shell in 'shells' given its final component.
2567: *
2568: * Results:
2569: * A pointer to the Shell structure.
2570: *
2571: * Side Effects:
2572: * None.
2573: *
2574: *-----------------------------------------------------------------------
2575: */
2576: static Shell *
1.2 deraadt 2577: JobMatchShell(name)
1.1 deraadt 2578: char *name; /* Final component of shell path */
2579: {
2580: register Shell *sh; /* Pointer into shells table */
2581: Shell *match; /* Longest-matching shell */
2582: register char *cp1,
2583: *cp2;
2584: char *eoname;
2585:
1.2 deraadt 2586: eoname = name + strlen(name);
1.1 deraadt 2587:
1.2 deraadt 2588: match = NULL;
1.1 deraadt 2589:
2590: for (sh = shells; sh->name != NULL; sh++) {
1.2 deraadt 2591: for (cp1 = eoname - strlen(sh->name), cp2 = sh->name;
1.1 deraadt 2592: *cp1 != '\0' && *cp1 == *cp2;
2593: cp1++, cp2++) {
2594: continue;
2595: }
2596: if (*cp1 != *cp2) {
2597: continue;
1.2 deraadt 2598: } else if (match == NULL || strlen(match->name) < strlen(sh->name)) {
2599: match = sh;
1.1 deraadt 2600: }
2601: }
1.2 deraadt 2602: return(match == NULL ? sh : match);
1.1 deraadt 2603: }
2604:
2605: /*-
2606: *-----------------------------------------------------------------------
2607: * Job_ParseShell --
2608: * Parse a shell specification and set up commandShell, shellPath
2609: * and shellName appropriately.
2610: *
2611: * Results:
2612: * FAILURE if the specification was incorrect.
2613: *
2614: * Side Effects:
2615: * commandShell points to a Shell structure (either predefined or
2616: * created from the shell spec), shellPath is the full path of the
2617: * shell described by commandShell, while shellName is just the
2618: * final component of shellPath.
2619: *
2620: * Notes:
2621: * A shell specification consists of a .SHELL target, with dependency
2622: * operator, followed by a series of blank-separated words. Double
2623: * quotes can be used to use blanks in words. A backslash escapes
2624: * anything (most notably a double-quote and a space) and
2625: * provides the functionality it does in C. Each word consists of
2626: * keyword and value separated by an equal sign. There should be no
2627: * unnecessary spaces in the word. The keywords are as follows:
2628: * name Name of shell.
2629: * path Location of shell. Overrides "name" if given
2630: * quiet Command to turn off echoing.
2631: * echo Command to turn echoing on
2632: * filter Result of turning off echoing that shouldn't be
2633: * printed.
2634: * echoFlag Flag to turn echoing on at the start
2635: * errFlag Flag to turn error checking on at the start
2636: * hasErrCtl True if shell has error checking control
2637: * check Command to turn on error checking if hasErrCtl
2638: * is TRUE or template of command to echo a command
2639: * for which error checking is off if hasErrCtl is
2640: * FALSE.
2641: * ignore Command to turn off error checking if hasErrCtl
2642: * is TRUE or template of command to execute a
2643: * command so as to ignore any errors it returns if
2644: * hasErrCtl is FALSE.
2645: *
2646: *-----------------------------------------------------------------------
2647: */
2648: ReturnStatus
1.2 deraadt 2649: Job_ParseShell(line)
1.1 deraadt 2650: char *line; /* The shell spec */
2651: {
2652: char **words;
2653: int wordCount;
2654: register char **argv;
2655: register int argc;
2656: char *path;
2657: Shell newShell;
2658: Boolean fullSpec = FALSE;
2659:
1.2 deraadt 2660: while (isspace(*line)) {
1.1 deraadt 2661: line++;
2662: }
1.2 deraadt 2663: words = brk_string(line, &wordCount, TRUE);
1.1 deraadt 2664:
1.2 deraadt 2665: memset((Address)&newShell, 0, sizeof(newShell));
1.6 millert 2666:
1.1 deraadt 2667: /*
2668: * Parse the specification by keyword
2669: */
1.2 deraadt 2670: for (path = NULL, argc = wordCount - 1, argv = words + 1;
1.1 deraadt 2671: argc != 0;
2672: argc--, argv++) {
1.2 deraadt 2673: if (strncmp(*argv, "path=", 5) == 0) {
1.1 deraadt 2674: path = &argv[0][5];
1.2 deraadt 2675: } else if (strncmp(*argv, "name=", 5) == 0) {
1.1 deraadt 2676: newShell.name = &argv[0][5];
2677: } else {
1.2 deraadt 2678: if (strncmp(*argv, "quiet=", 6) == 0) {
1.1 deraadt 2679: newShell.echoOff = &argv[0][6];
1.2 deraadt 2680: } else if (strncmp(*argv, "echo=", 5) == 0) {
1.1 deraadt 2681: newShell.echoOn = &argv[0][5];
1.2 deraadt 2682: } else if (strncmp(*argv, "filter=", 7) == 0) {
1.1 deraadt 2683: newShell.noPrint = &argv[0][7];
2684: newShell.noPLen = strlen(newShell.noPrint);
1.2 deraadt 2685: } else if (strncmp(*argv, "echoFlag=", 9) == 0) {
1.1 deraadt 2686: newShell.echo = &argv[0][9];
1.2 deraadt 2687: } else if (strncmp(*argv, "errFlag=", 8) == 0) {
1.1 deraadt 2688: newShell.exit = &argv[0][8];
1.2 deraadt 2689: } else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
1.1 deraadt 2690: char c = argv[0][10];
2691: newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
1.2 deraadt 2692: (c != 'T') && (c != 't'));
2693: } else if (strncmp(*argv, "check=", 6) == 0) {
1.1 deraadt 2694: newShell.errCheck = &argv[0][6];
1.2 deraadt 2695: } else if (strncmp(*argv, "ignore=", 7) == 0) {
1.1 deraadt 2696: newShell.ignErr = &argv[0][7];
2697: } else {
1.2 deraadt 2698: Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
1.1 deraadt 2699: *argv);
1.2 deraadt 2700: return(FAILURE);
1.1 deraadt 2701: }
2702: fullSpec = TRUE;
2703: }
2704: }
2705:
1.2 deraadt 2706: if (path == NULL) {
1.1 deraadt 2707: /*
2708: * If no path was given, the user wants one of the pre-defined shells,
2709: * yes? So we find the one s/he wants with the help of JobMatchShell
2710: * and set things up the right way. shellPath will be set up by
2711: * Job_Init.
2712: */
1.2 deraadt 2713: if (newShell.name == NULL) {
2714: Parse_Error(PARSE_FATAL, "Neither path nor name specified");
2715: return(FAILURE);
1.1 deraadt 2716: } else {
1.2 deraadt 2717: commandShell = JobMatchShell(newShell.name);
1.1 deraadt 2718: shellName = newShell.name;
2719: }
2720: } else {
2721: /*
1.6 millert 2722: * The user provided a path. If s/he gave nothing else (fullSpec is
1.1 deraadt 2723: * FALSE), try and find a matching shell in the ones we know of.
2724: * Else we just take the specification at its word and copy it
2725: * to a new location. In either case, we need to record the
2726: * path the user gave for the shell.
2727: */
2728: shellPath = path;
1.2 deraadt 2729: path = strrchr(path, '/');
2730: if (path == NULL) {
1.1 deraadt 2731: path = shellPath;
2732: } else {
2733: path += 1;
2734: }
1.2 deraadt 2735: if (newShell.name != NULL) {
1.1 deraadt 2736: shellName = newShell.name;
2737: } else {
2738: shellName = path;
2739: }
2740: if (!fullSpec) {
1.2 deraadt 2741: commandShell = JobMatchShell(shellName);
1.1 deraadt 2742: } else {
2743: commandShell = (Shell *) emalloc(sizeof(Shell));
2744: *commandShell = newShell;
2745: }
2746: }
2747:
2748: if (commandShell->echoOn && commandShell->echoOff) {
2749: commandShell->hasEchoCtl = TRUE;
2750: }
1.6 millert 2751:
1.1 deraadt 2752: if (!commandShell->hasErrCtl) {
1.2 deraadt 2753: if (commandShell->errCheck == NULL) {
1.1 deraadt 2754: commandShell->errCheck = "";
2755: }
1.2 deraadt 2756: if (commandShell->ignErr == NULL) {
1.1 deraadt 2757: commandShell->ignErr = "%s\n";
2758: }
2759: }
1.6 millert 2760:
1.1 deraadt 2761: /*
2762: * Do not free up the words themselves, since they might be in use by the
2763: * shell specification...
2764: */
1.2 deraadt 2765: free(words);
1.1 deraadt 2766: return SUCCESS;
2767: }
2768:
2769: /*-
2770: *-----------------------------------------------------------------------
2771: * JobInterrupt --
2772: * Handle the receipt of an interrupt.
2773: *
2774: * Results:
2775: * None
2776: *
2777: * Side Effects:
2778: * All children are killed. Another job will be started if the
2779: * .INTERRUPT target was given.
2780: *-----------------------------------------------------------------------
2781: */
2782: static void
1.2 deraadt 2783: JobInterrupt(runINTERRUPT, signo)
1.1 deraadt 2784: int runINTERRUPT; /* Non-zero if commands for the .INTERRUPT
2785: * target should be executed */
1.2 deraadt 2786: int signo; /* signal received */
1.1 deraadt 2787: {
2788: LstNode ln; /* element in job table */
2789: Job *job; /* job descriptor in that element */
2790: GNode *interrupt; /* the node describing the .INTERRUPT target */
1.6 millert 2791:
1.1 deraadt 2792: aborting = ABORT_INTERRUPT;
2793:
1.2 deraadt 2794: (void) Lst_Open(jobs);
2795: while ((ln = Lst_Next(jobs)) != NILLNODE) {
2796: job = (Job *) Lst_Datum(ln);
1.1 deraadt 2797:
1.2 deraadt 2798: if (!Targ_Precious(job->node)) {
2799: char *file = (job->node->path == NULL ?
1.1 deraadt 2800: job->node->name :
2801: job->node->path);
1.2 deraadt 2802: if (!noExecute && eunlink(file) != -1) {
2803: Error("*** %s removed", file);
1.1 deraadt 2804: }
2805: }
2806: #ifdef RMT_WANTS_SIGNALS
2807: if (job->flags & JOB_REMOTE) {
2808: /*
2809: * If job is remote, let the Rmt module do the killing.
2810: */
1.2 deraadt 2811: if (!Rmt_Signal(job, signo)) {
1.1 deraadt 2812: /*
2813: * If couldn't kill the thing, finish it out now with an
2814: * error code, since no exit report will come in likely.
2815: */
1.2 deraadt 2816: int status;
1.1 deraadt 2817:
2818: status.w_status = 0;
2819: status.w_retcode = 1;
1.2 deraadt 2820: JobFinish(job, &status);
1.1 deraadt 2821: }
2822: } else if (job->pid) {
1.2 deraadt 2823: KILL(job->pid, signo);
1.1 deraadt 2824: }
2825: #else
2826: if (job->pid) {
1.2 deraadt 2827: if (DEBUG(JOB)) {
2828: (void) fprintf(stdout,
1.6 millert 2829: "JobInterrupt passing signal to child %d.\n",
1.2 deraadt 2830: job->pid);
2831: (void) fflush(stdout);
2832: }
2833: KILL(job->pid, signo);
2834: }
2835: #endif /* RMT_WANTS_SIGNALS */
2836: }
2837:
2838: #ifdef REMOTE
2839: (void)Lst_Open(stoppedJobs);
2840: while ((ln = Lst_Next(stoppedJobs)) != NILLNODE) {
2841: job = (Job *) Lst_Datum(ln);
2842:
2843: if (job->flags & JOB_RESTART) {
2844: if (DEBUG(JOB)) {
2845: (void) fprintf(stdout, "%s%s",
2846: "JobInterrupt skipping job on stopped queue",
2847: "-- it was waiting to be restarted.\n");
2848: (void) fflush(stdout);
2849: }
2850: continue;
2851: }
2852: if (!Targ_Precious(job->node)) {
2853: char *file = (job->node->path == NULL ?
2854: job->node->name :
2855: job->node->path);
2856: if (eunlink(file) == 0) {
2857: Error("*** %s removed", file);
2858: }
2859: }
2860: /*
2861: * Resume the thing so it will take the signal.
2862: */
2863: if (DEBUG(JOB)) {
2864: (void) fprintf(stdout,
1.6 millert 2865: "JobInterrupt passing CONT to stopped child %d.\n",
1.2 deraadt 2866: job->pid);
2867: (void) fflush(stdout);
2868: }
2869: KILL(job->pid, SIGCONT);
2870: #ifdef RMT_WANTS_SIGNALS
2871: if (job->flags & JOB_REMOTE) {
2872: /*
2873: * If job is remote, let the Rmt module do the killing.
2874: */
2875: if (!Rmt_Signal(job, SIGINT)) {
2876: /*
2877: * If couldn't kill the thing, finish it out now with an
2878: * error code, since no exit report will come in likely.
2879: */
2880: int status;
2881: status.w_status = 0;
2882: status.w_retcode = 1;
2883: JobFinish(job, &status);
2884: }
2885: } else if (job->pid) {
2886: if (DEBUG(JOB)) {
2887: (void) fprintf(stdout,
2888: "JobInterrupt passing interrupt to stopped child %d.\n",
2889: job->pid);
2890: (void) fflush(stdout);
2891: }
1.1 deraadt 2892: KILL(job->pid, SIGINT);
2893: }
2894: #endif /* RMT_WANTS_SIGNALS */
2895: }
1.2 deraadt 2896: #endif
2897: Lst_Close(stoppedJobs);
1.1 deraadt 2898:
2899: if (runINTERRUPT && !touchFlag) {
1.2 deraadt 2900: interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
1.1 deraadt 2901: if (interrupt != NILGNODE) {
2902: ignoreErrors = FALSE;
2903:
1.2 deraadt 2904: JobStart(interrupt, JOB_IGNDOTS, (Job *)0);
1.1 deraadt 2905: while (nJobs) {
2906: Job_CatchOutput();
2907: #ifndef RMT_WILL_WATCH
1.2 deraadt 2908: Job_CatchChildren(!usePipes);
1.1 deraadt 2909: #endif /* RMT_WILL_WATCH */
2910: }
2911: }
2912: }
1.2 deraadt 2913: (void) eunlink(tfile);
2914: exit(signo);
1.1 deraadt 2915: }
2916:
2917: /*
2918: *-----------------------------------------------------------------------
2919: * Job_End --
2920: * Do final processing such as the running of the commands
1.6 millert 2921: * attached to the .END target.
1.1 deraadt 2922: *
2923: * Results:
2924: * Number of errors reported.
2925: *
2926: * Side Effects:
1.6 millert 2927: * The process' temporary file (tfile) is removed if it still
1.1 deraadt 2928: * existed.
2929: *-----------------------------------------------------------------------
2930: */
2931: int
1.2 deraadt 2932: Job_End()
1.1 deraadt 2933: {
1.2 deraadt 2934: if (postCommands != NILGNODE && !Lst_IsEmpty(postCommands->commands)) {
1.1 deraadt 2935: if (errors) {
1.2 deraadt 2936: Error("Errors reported so .END ignored");
1.1 deraadt 2937: } else {
1.2 deraadt 2938: JobStart(postCommands, JOB_SPECIAL | JOB_IGNDOTS, NULL);
1.1 deraadt 2939:
2940: while (nJobs) {
2941: Job_CatchOutput();
2942: #ifndef RMT_WILL_WATCH
1.2 deraadt 2943: Job_CatchChildren(!usePipes);
1.1 deraadt 2944: #endif /* RMT_WILL_WATCH */
2945: }
2946: }
2947: }
1.2 deraadt 2948: (void) eunlink(tfile);
1.1 deraadt 2949: return(errors);
2950: }
2951:
2952: /*-
2953: *-----------------------------------------------------------------------
2954: * Job_Wait --
2955: * Waits for all running jobs to finish and returns. Sets 'aborting'
2956: * to ABORT_WAIT to prevent other jobs from starting.
2957: *
2958: * Results:
2959: * None.
2960: *
2961: * Side Effects:
2962: * Currently running jobs finish.
2963: *
2964: *-----------------------------------------------------------------------
2965: */
2966: void
2967: Job_Wait()
2968: {
2969: aborting = ABORT_WAIT;
2970: while (nJobs != 0) {
2971: Job_CatchOutput();
2972: #ifndef RMT_WILL_WATCH
2973: Job_CatchChildren(!usePipes);
2974: #endif /* RMT_WILL_WATCH */
2975: }
2976: aborting = 0;
2977: }
2978:
2979: /*-
2980: *-----------------------------------------------------------------------
2981: * Job_AbortAll --
2982: * Abort all currently running jobs without handling output or anything.
2983: * This function is to be called only in the event of a major
2984: * error. Most definitely NOT to be called from JobInterrupt.
2985: *
2986: * Results:
2987: * None
2988: *
2989: * Side Effects:
2990: * All children are killed, not just the firstborn
2991: *-----------------------------------------------------------------------
2992: */
2993: void
1.2 deraadt 2994: Job_AbortAll()
1.1 deraadt 2995: {
1.2 deraadt 2996: LstNode ln; /* element in job table */
1.1 deraadt 2997: Job *job; /* the job descriptor in that element */
2998: int foo;
1.6 millert 2999:
1.1 deraadt 3000: aborting = ABORT_ERROR;
1.6 millert 3001:
1.1 deraadt 3002: if (nJobs) {
3003:
1.2 deraadt 3004: (void) Lst_Open(jobs);
3005: while ((ln = Lst_Next(jobs)) != NILLNODE) {
3006: job = (Job *) Lst_Datum(ln);
1.1 deraadt 3007:
3008: /*
3009: * kill the child process with increasingly drastic signals to make
1.6 millert 3010: * darn sure it's dead.
1.1 deraadt 3011: */
3012: #ifdef RMT_WANTS_SIGNALS
3013: if (job->flags & JOB_REMOTE) {
3014: Rmt_Signal(job, SIGINT);
3015: Rmt_Signal(job, SIGKILL);
3016: } else {
3017: KILL(job->pid, SIGINT);
3018: KILL(job->pid, SIGKILL);
3019: }
3020: #else
3021: KILL(job->pid, SIGINT);
3022: KILL(job->pid, SIGKILL);
3023: #endif /* RMT_WANTS_SIGNALS */
3024: }
3025: }
1.6 millert 3026:
1.1 deraadt 3027: /*
3028: * Catch as many children as want to report in at first, then give up
3029: */
1.2 deraadt 3030: while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
1.1 deraadt 3031: continue;
1.2 deraadt 3032: (void) eunlink(tfile);
3033: }
3034:
3035: #ifdef REMOTE
3036: /*-
3037: *-----------------------------------------------------------------------
3038: * JobFlagForMigration --
3039: * Handle the eviction of a child. Called from RmtStatusChange.
3040: * Flags the child as remigratable and then suspends it.
3041: *
3042: * Results:
3043: * none.
3044: *
3045: * Side Effects:
3046: * The job descriptor is flagged for remigration.
3047: *
3048: *-----------------------------------------------------------------------
3049: */
3050: void
3051: JobFlagForMigration(hostID)
3052: int hostID; /* ID of host we used, for matching children. */
3053: {
3054: register Job *job; /* job descriptor for dead child */
3055: LstNode jnode; /* list element for finding job */
3056:
3057: if (DEBUG(JOB)) {
3058: (void) fprintf(stdout, "JobFlagForMigration(%d) called.\n", hostID);
3059: (void) fflush(stdout);
3060: }
3061: jnode = Lst_Find(jobs, (ClientData)hostID, JobCmpRmtID);
3062:
3063: if (jnode == NILLNODE) {
3064: jnode = Lst_Find(stoppedJobs, (ClientData)hostID, JobCmpRmtID);
3065: if (jnode == NILLNODE) {
3066: if (DEBUG(JOB)) {
3067: Error("Evicting host(%d) not in table", hostID);
3068: }
3069: return;
3070: }
3071: }
3072: job = (Job *) Lst_Datum(jnode);
3073:
3074: if (DEBUG(JOB)) {
3075: (void) fprintf(stdout,
3076: "JobFlagForMigration(%d) found job '%s'.\n", hostID,
3077: job->node->name);
3078: (void) fflush(stdout);
3079: }
3080:
3081: KILL(job->pid, SIGSTOP);
3082:
3083: job->flags |= JOB_REMIGRATE;
3084: }
3085:
3086: #endif
3087:
3088: /*-
3089: *-----------------------------------------------------------------------
3090: * JobRestartJobs --
3091: * Tries to restart stopped jobs if there are slots available.
3092: * Note that this tries to restart them regardless of pending errors.
3093: * It's not good to leave stopped jobs lying around!
3094: *
3095: * Results:
3096: * None.
3097: *
3098: * Side Effects:
3099: * Resumes(and possibly migrates) jobs.
3100: *
3101: *-----------------------------------------------------------------------
3102: */
3103: static void
3104: JobRestartJobs()
3105: {
3106: while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
3107: if (DEBUG(JOB)) {
3108: (void) fprintf(stdout,
3109: "Job queue is not full. Restarting a stopped job.\n");
3110: (void) fflush(stdout);
3111: }
3112: JobRestart((Job *)Lst_DeQueue(stoppedJobs));
3113: }
1.1 deraadt 3114: }
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