Annotation of src/usr.bin/make/job.c, Revision 1.6
1.6 ! millert 1: /* $OpenBSD: job.c,v 1.5 1996/09/02 16:04:11 briggs Exp $ */
! 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
1.6 ! millert 46: static char rcsid[] = "$OpenBSD: job.c,v 1.5 1996/09/02 16:04:11 briggs 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
167: * used over by removing it before the child shell is executed. The XXXXX in
168: * the string are replaced by the pid of the make process in a 5-character
1.6 ! millert 169: * field with leading zeroes.
1.1 deraadt 170: */
171: static char tfile[] = TMPPAT;
172:
173:
174: /*
175: * Descriptions for various shells.
176: */
177: static Shell shells[] = {
178: /*
179: * CSH description. The csh can do echo control by playing
180: * with the setting of the 'echo' shell variable. Sadly,
181: * however, it is unable to do error control nicely.
182: */
183: {
184: "csh",
185: TRUE, "unset verbose", "set verbose", "unset verbose", 10,
186: FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"",
187: "v", "e",
188: },
189: /*
190: * SH description. Echo control is also possible and, under
191: * sun UNIX anyway, one can even control error checking.
192: */
193: {
194: "sh",
195: TRUE, "set -", "set -v", "set -", 5,
1.2 deraadt 196: TRUE, "set -e", "set +e",
197: #ifdef OLDBOURNESHELL
1.1 deraadt 198: FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
1.2 deraadt 199: #endif
1.1 deraadt 200: "v", "e",
201: },
202: /*
203: * UNKNOWN.
204: */
205: {
1.2 deraadt 206: (char *) 0,
207: FALSE, (char *) 0, (char *) 0, (char *) 0, 0,
208: FALSE, (char *) 0, (char *) 0,
209: (char *) 0, (char *) 0,
1.1 deraadt 210: }
211: };
212: static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
213: * which we pass all
214: * commands in the Makefile.
215: * It is set by the
216: * Job_ParseShell function */
1.2 deraadt 217: static char *shellPath = NULL, /* full pathname of
1.1 deraadt 218: * executable image */
219: *shellName; /* last component of shell */
220:
221:
222: static int maxJobs; /* The most children we can run at once */
223: static int maxLocal; /* The most local ones we can have */
1.2 deraadt 224: STATIC int nJobs; /* The number of children currently running */
225: STATIC int nLocal; /* The number of local children */
226: STATIC Lst jobs; /* The structures that describe them */
227: STATIC Boolean jobFull; /* Flag to tell when the job table is full. It
1.1 deraadt 228: * is set TRUE when (1) the total number of
229: * running jobs equals the maximum allowed or
230: * (2) a job can only be run locally, but
231: * nLocal equals maxLocal */
232: #ifndef RMT_WILL_WATCH
233: static fd_set outputs; /* Set of descriptors of pipes connected to
234: * the output channels of children */
235: #endif
236:
1.2 deraadt 237: STATIC GNode *lastNode; /* The node for which output was most recently
1.1 deraadt 238: * produced. */
1.2 deraadt 239: STATIC char *targFmt; /* Format string to use to head output from a
1.1 deraadt 240: * job when it's not the most-recent job heard
241: * from */
1.2 deraadt 242:
243: #ifdef REMOTE
244: # define TARG_FMT "--- %s at %s ---\n" /* Default format */
245: # define MESSAGE(fp, gn) \
246: (void) fprintf(fp, targFmt, gn->name, gn->rem.hname);
247: #else
248: # define TARG_FMT "--- %s ---\n" /* Default format */
249: # define MESSAGE(fp, gn) \
250: (void) fprintf(fp, targFmt, gn->name);
251: #endif
1.1 deraadt 252:
253: /*
254: * When JobStart attempts to run a job remotely but can't, and isn't allowed
255: * to run the job locally, or when Job_CatchChildren detects a job that has
256: * been migrated home, the job is placed on the stoppedJobs queue to be run
1.6 ! millert 257: * when the next job finishes.
1.1 deraadt 258: */
1.2 deraadt 259: STATIC Lst stoppedJobs; /* Lst of Job structures describing
1.1 deraadt 260: * jobs that were stopped due to concurrency
261: * limits or migration home */
262:
263:
264: #if defined(USE_PGRP) && defined(SYSV)
1.2 deraadt 265: # define KILL(pid, sig) killpg(-(pid), (sig))
1.1 deraadt 266: #else
267: # if defined(USE_PGRP)
1.2 deraadt 268: # define KILL(pid, sig) killpg((pid), (sig))
1.1 deraadt 269: # else
1.2 deraadt 270: # define KILL(pid, sig) kill((pid), (sig))
1.1 deraadt 271: # endif
272: #endif
273:
1.6 ! millert 274: /*
1.2 deraadt 275: * Grmpf... There is no way to set bits of the wait structure
276: * anymore with the stupid W*() macros. I liked the union wait
277: * stuff much more. So, we devise our own macros... This is
278: * really ugly, use dramamine sparingly. You have been warned.
279: */
280: #define W_SETMASKED(st, val, fun) \
281: { \
282: int sh = (int) ~0; \
283: int mask = fun(sh); \
284: \
285: for (sh = 0; ((mask >> sh) & 1) == 0; sh++) \
286: continue; \
287: *(st) = (*(st) & ~mask) | ((val) << sh); \
288: }
289:
290: #define W_SETTERMSIG(st, val) W_SETMASKED(st, val, WTERMSIG)
291: #define W_SETEXITSTATUS(st, val) W_SETMASKED(st, val, WEXITSTATUS)
292:
293:
1.1 deraadt 294: static int JobCondPassSig __P((ClientData, ClientData));
295: static void JobPassSig __P((int));
296: static int JobCmpPid __P((ClientData, ClientData));
297: static int JobPrintCommand __P((ClientData, ClientData));
298: static int JobSaveCommand __P((ClientData, ClientData));
1.2 deraadt 299: static void JobClose __P((Job *));
300: #ifdef REMOTE
301: static int JobCmpRmtID __P((Job *, int));
302: # ifdef RMT_WILL_WATCH
303: static void JobLocalInput __P((int, Job *));
304: # endif
305: #else
306: static void JobFinish __P((Job *, int *));
1.1 deraadt 307: static void JobExec __P((Job *, char **));
1.2 deraadt 308: #endif
1.1 deraadt 309: static void JobMakeArgv __P((Job *, char **));
310: static void JobRestart __P((Job *));
311: static int JobStart __P((GNode *, int, Job *));
1.6 ! millert 312: static char *JobOutput __P((Job *, char *, char *, int));
1.1 deraadt 313: static void JobDoOutput __P((Job *, Boolean));
314: static Shell *JobMatchShell __P((char *));
1.2 deraadt 315: static void JobInterrupt __P((int, int));
316: static void JobRestartJobs __P((void));
1.1 deraadt 317:
318: /*-
319: *-----------------------------------------------------------------------
320: * JobCondPassSig --
321: * Pass a signal to a job if the job is remote or if USE_PGRP
322: * is defined.
323: *
324: * Results:
325: * === 0
326: *
327: * Side Effects:
328: * None, except the job may bite it.
329: *
330: *-----------------------------------------------------------------------
331: */
332: static int
333: JobCondPassSig(jobp, signop)
334: ClientData jobp; /* Job to biff */
335: ClientData signop; /* Signal to send it */
336: {
337: Job *job = (Job *) jobp;
338: int signo = *(int *) signop;
339: #ifdef RMT_WANTS_SIGNALS
340: if (job->flags & JOB_REMOTE) {
1.2 deraadt 341: (void) Rmt_Signal(job, signo);
1.1 deraadt 342: } else {
343: KILL(job->pid, signo);
344: }
345: #else
346: /*
347: * Assume that sending the signal to job->pid will signal any remote
348: * job as well.
349: */
1.2 deraadt 350: if (DEBUG(JOB)) {
1.6 ! millert 351: (void) fprintf(stdout,
1.2 deraadt 352: "JobCondPassSig passing signal %d to child %d.\n",
353: signo, job->pid);
354: (void) fflush(stdout);
355: }
1.1 deraadt 356: KILL(job->pid, signo);
357: #endif
1.2 deraadt 358: return 0;
1.1 deraadt 359: }
360:
361: /*-
362: *-----------------------------------------------------------------------
363: * JobPassSig --
364: * Pass a signal on to all remote jobs and to all local jobs if
365: * USE_PGRP is defined, then die ourselves.
366: *
367: * Results:
368: * None.
369: *
370: * Side Effects:
371: * We die by the same signal.
1.6 ! millert 372: *
1.1 deraadt 373: *-----------------------------------------------------------------------
374: */
375: static void
376: JobPassSig(signo)
377: int signo; /* The signal number we've received */
378: {
1.2 deraadt 379: sigset_t nmask, omask;
1.3 niklas 380: struct sigaction act;
1.6 ! millert 381:
1.2 deraadt 382: if (DEBUG(JOB)) {
383: (void) fprintf(stdout, "JobPassSig(%d) called.\n", signo);
384: (void) fflush(stdout);
385: }
386: Lst_ForEach(jobs, JobCondPassSig, (ClientData) &signo);
1.1 deraadt 387:
388: /*
389: * Deal with proper cleanup based on the signal received. We only run
390: * the .INTERRUPT target if the signal was in fact an interrupt. The other
391: * three termination signals are more of a "get out *now*" command.
392: */
393: if (signo == SIGINT) {
1.2 deraadt 394: JobInterrupt(TRUE, signo);
1.1 deraadt 395: } else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) {
1.2 deraadt 396: JobInterrupt(FALSE, signo);
1.1 deraadt 397: }
1.6 ! millert 398:
1.1 deraadt 399: /*
400: * Leave gracefully if SIGQUIT, rather than core dumping.
401: */
402: if (signo == SIGQUIT) {
403: Finish(0);
404: }
1.6 ! millert 405:
1.1 deraadt 406: /*
407: * Send ourselves the signal now we've given the message to everyone else.
408: * Note we block everything else possible while we're getting the signal.
409: * This ensures that all our jobs get continued when we wake up before
410: * we take any other signal.
411: */
1.3 niklas 412: sigemptyset(&nmask);
413: sigaddset(&nmask, signo);
414: sigprocmask(SIG_SETMASK, &nmask, &omask);
415: act.sa_handler = SIG_DFL;
416: sigemptyset(&act.sa_mask);
417: act.sa_flags = 0;
418: sigaction(signo, &act, NULL);
1.2 deraadt 419:
420: if (DEBUG(JOB)) {
421: (void) fprintf(stdout,
422: "JobPassSig passing signal to self, mask = %x.\n",
423: ~0 & ~(1 << (signo-1)));
424: (void) fflush(stdout);
425: }
426: (void) signal(signo, SIG_DFL);
1.1 deraadt 427:
1.2 deraadt 428: (void) KILL(getpid(), signo);
1.1 deraadt 429:
430: signo = SIGCONT;
431: Lst_ForEach(jobs, JobCondPassSig, (ClientData) &signo);
432:
1.2 deraadt 433: (void) sigprocmask(SIG_SETMASK, &omask, NULL);
1.3 niklas 434: sigprocmask(SIG_SETMASK, &omask, NULL);
435: act.sa_handler = JobPassSig;
436: sigaction(signo, &act, NULL);
1.1 deraadt 437: }
438:
439: /*-
440: *-----------------------------------------------------------------------
441: * JobCmpPid --
442: * Compare the pid of the job with the given pid and return 0 if they
443: * are equal. This function is called from Job_CatchChildren via
444: * Lst_Find to find the job descriptor of the finished job.
445: *
446: * Results:
447: * 0 if the pid's match
448: *
449: * Side Effects:
450: * None
451: *-----------------------------------------------------------------------
452: */
453: static int
1.2 deraadt 454: JobCmpPid(job, pid)
1.1 deraadt 455: ClientData job; /* job to examine */
456: ClientData pid; /* process id desired */
457: {
1.6 ! millert 458: return *(int *) pid - ((Job *) job)->pid;
1.1 deraadt 459: }
460:
1.2 deraadt 461: #ifdef REMOTE
462: /*-
463: *-----------------------------------------------------------------------
464: * JobCmpRmtID --
465: * Compare the rmtID of the job with the given rmtID and return 0 if they
1.6 ! millert 466: * are equal.
1.2 deraadt 467: *
468: * Results:
469: * 0 if the rmtID's match
470: *
471: * Side Effects:
472: * None.
473: *-----------------------------------------------------------------------
474: */
475: static int
476: JobCmpRmtID(job, rmtID)
477: ClientData job; /* job to examine */
478: ClientData rmtID; /* remote id desired */
479: {
480: return(*(int *) rmtID - *(int *) job->rmtID);
481: }
482: #endif
483:
1.1 deraadt 484: /*-
485: *-----------------------------------------------------------------------
486: * JobPrintCommand --
487: * Put out another command for the given job. If the command starts
488: * with an @ or a - we process it specially. In the former case,
489: * so long as the -s and -n flags weren't given to make, we stick
490: * a shell-specific echoOff command in the script. In the latter,
491: * we ignore errors for the entire job, unless the shell has error
492: * control.
493: * If the command is just "..." we take all future commands for this
494: * job to be commands to be executed once the entire graph has been
495: * made and return non-zero to signal that the end of the commands
496: * was reached. These commands are later attached to the postCommands
497: * node and executed by Job_End when all things are done.
498: * This function is called from JobStart via Lst_ForEach.
499: *
500: * Results:
501: * Always 0, unless the command was "..."
502: *
503: * Side Effects:
504: * If the command begins with a '-' and the shell has no error control,
505: * the JOB_IGNERR flag is set in the job descriptor.
506: * If the command is "..." and we're not ignoring such things,
507: * tailCmds is set to the successor node of the cmd.
508: * numCommands is incremented if the command is actually printed.
509: *-----------------------------------------------------------------------
510: */
511: static int
1.2 deraadt 512: JobPrintCommand(cmdp, jobp)
1.1 deraadt 513: ClientData cmdp; /* command string to print */
514: ClientData jobp; /* job for which to print it */
515: {
516: Boolean noSpecials; /* true if we shouldn't worry about
517: * inserting special commands into
518: * the input stream. */
519: Boolean shutUp = FALSE; /* true if we put a no echo command
520: * into the command file */
521: Boolean errOff = FALSE; /* true if we turned error checking
522: * off before printing the command
523: * and need to turn it back on */
524: char *cmdTemplate; /* Template to use when printing the
525: * command */
526: char *cmdStart; /* Start of expanded command */
527: LstNode cmdNode; /* Node for replacing the command */
528: char *cmd = (char *) cmdp;
1.6 ! millert 529: Job *job = (Job *) jobp;
1.1 deraadt 530:
1.2 deraadt 531: noSpecials = (noExecute && !(job->node->type & OP_MAKE));
1.1 deraadt 532:
1.2 deraadt 533: if (strcmp(cmd, "...") == 0) {
1.6 ! millert 534: job->node->type |= OP_SAVE_CMDS;
1.1 deraadt 535: if ((job->flags & JOB_IGNDOTS) == 0) {
1.2 deraadt 536: job->tailCmds = Lst_Succ(Lst_Member(job->node->commands,
537: (ClientData)cmd));
1.6 ! millert 538: return 1;
1.2 deraadt 539: }
1.6 ! millert 540: return 0;
1.1 deraadt 541: }
542:
1.2 deraadt 543: #define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \
544: (void) fprintf(stdout, fmt, arg); \
545: (void) fflush(stdout); \
546: } \
547: (void) fprintf(job->cmdFILE, fmt, arg); \
548: (void) fflush(job->cmdFILE);
1.1 deraadt 549:
550: numCommands += 1;
551:
552: /*
553: * For debugging, we replace each command with the result of expanding
554: * the variables in the command.
555: */
1.2 deraadt 556: cmdNode = Lst_Member(job->node->commands, (ClientData)cmd);
557: cmdStart = cmd = Var_Subst(NULL, cmd, job->node, FALSE);
558: Lst_Replace(cmdNode, (ClientData)cmdStart);
1.1 deraadt 559:
560: cmdTemplate = "%s\n";
561:
562: /*
563: * Check for leading @' and -'s to control echoing and error checking.
564: */
565: while (*cmd == '@' || *cmd == '-') {
566: if (*cmd == '@') {
567: shutUp = TRUE;
568: } else {
569: errOff = TRUE;
570: }
571: cmd++;
572: }
573:
574: while (isspace((unsigned char) *cmd))
575: cmd++;
576:
577: if (shutUp) {
1.2 deraadt 578: if (!(job->flags & JOB_SILENT) && !noSpecials &&
1.1 deraadt 579: commandShell->hasEchoCtl) {
1.2 deraadt 580: DBPRINTF("%s\n", commandShell->echoOff);
1.1 deraadt 581: } else {
582: shutUp = FALSE;
583: }
584: }
585:
586: if (errOff) {
1.2 deraadt 587: if ( !(job->flags & JOB_IGNERR) && !noSpecials) {
1.1 deraadt 588: if (commandShell->hasErrCtl) {
589: /*
590: * we don't want the error-control commands showing
591: * up either, so we turn off echoing while executing
592: * them. We could put another field in the shell
593: * structure to tell JobDoOutput to look for this
594: * string too, but why make it any more complex than
595: * it already is?
596: */
1.2 deraadt 597: if (!(job->flags & JOB_SILENT) && !shutUp &&
1.1 deraadt 598: commandShell->hasEchoCtl) {
1.2 deraadt 599: DBPRINTF("%s\n", commandShell->echoOff);
600: DBPRINTF("%s\n", commandShell->ignErr);
601: DBPRINTF("%s\n", commandShell->echoOn);
1.1 deraadt 602: } else {
1.2 deraadt 603: DBPRINTF("%s\n", commandShell->ignErr);
1.1 deraadt 604: }
605: } else if (commandShell->ignErr &&
1.2 deraadt 606: (*commandShell->ignErr != '\0'))
1.1 deraadt 607: {
608: /*
609: * The shell has no error control, so we need to be
610: * weird to get it to ignore any errors from the command.
611: * If echoing is turned on, we turn it off and use the
612: * errCheck template to echo the command. Leave echoing
613: * off so the user doesn't see the weirdness we go through
614: * to ignore errors. Set cmdTemplate to use the weirdness
615: * instead of the simple "%s\n" template.
616: */
1.2 deraadt 617: if (!(job->flags & JOB_SILENT) && !shutUp &&
1.1 deraadt 618: commandShell->hasEchoCtl) {
1.2 deraadt 619: DBPRINTF("%s\n", commandShell->echoOff);
620: DBPRINTF(commandShell->errCheck, cmd);
1.1 deraadt 621: shutUp = TRUE;
622: }
623: cmdTemplate = commandShell->ignErr;
624: /*
1.6 ! millert 625: * The error ignoration (hee hee) is already taken care
1.1 deraadt 626: * of by the ignErr template, so pretend error checking
627: * is still on.
628: */
629: errOff = FALSE;
630: } else {
631: errOff = FALSE;
632: }
633: } else {
634: errOff = FALSE;
635: }
636: }
1.6 ! millert 637:
1.2 deraadt 638: DBPRINTF(cmdTemplate, cmd);
1.6 ! millert 639:
1.1 deraadt 640: if (errOff) {
641: /*
642: * If echoing is already off, there's no point in issuing the
643: * echoOff command. Otherwise we issue it and pretend it was on
644: * for the whole command...
645: */
646: if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
1.2 deraadt 647: DBPRINTF("%s\n", commandShell->echoOff);
1.1 deraadt 648: shutUp = TRUE;
649: }
1.2 deraadt 650: DBPRINTF("%s\n", commandShell->errCheck);
1.1 deraadt 651: }
652: if (shutUp) {
1.2 deraadt 653: DBPRINTF("%s\n", commandShell->echoOn);
1.1 deraadt 654: }
1.2 deraadt 655: return 0;
1.1 deraadt 656: }
657:
658: /*-
659: *-----------------------------------------------------------------------
660: * JobSaveCommand --
661: * Save a command to be executed when everything else is done.
662: * Callback function for JobFinish...
663: *
664: * Results:
665: * Always returns 0
666: *
667: * Side Effects:
668: * The command is tacked onto the end of postCommands's commands list.
669: *
670: *-----------------------------------------------------------------------
671: */
672: static int
1.2 deraadt 673: JobSaveCommand(cmd, gn)
1.1 deraadt 674: ClientData cmd;
675: ClientData gn;
676: {
1.2 deraadt 677: cmd = (ClientData) Var_Subst(NULL, (char *) cmd, (GNode *) gn, FALSE);
678: (void) Lst_AtEnd(postCommands->commands, cmd);
679: return(0);
680: }
681:
682:
683: /*-
684: *-----------------------------------------------------------------------
685: * JobClose --
686: * Called to close both input and output pipes when a job is finished.
687: *
688: * Results:
689: * Nada
690: *
691: * Side Effects:
692: * The file descriptors associated with the job are closed.
693: *
694: *-----------------------------------------------------------------------
695: */
696: static void
697: JobClose(job)
698: Job *job;
699: {
700: if (usePipes) {
701: #ifdef RMT_WILL_WATCH
702: Rmt_Ignore(job->inPipe);
703: #else
704: FD_CLR(job->inPipe, &outputs);
705: #endif
706: if (job->outPipe != job->inPipe) {
707: (void) close(job->outPipe);
708: }
709: JobDoOutput(job, TRUE);
710: (void) close(job->inPipe);
711: } else {
712: (void) close(job->outFd);
713: JobDoOutput(job, TRUE);
714: }
1.1 deraadt 715: }
716:
717: /*-
718: *-----------------------------------------------------------------------
719: * JobFinish --
720: * Do final processing for the given job including updating
721: * parents and starting new jobs as available/necessary. Note
722: * that we pay no attention to the JOB_IGNERR flag here.
723: * This is because when we're called because of a noexecute flag
724: * or something, jstat.w_status is 0 and when called from
725: * Job_CatchChildren, the status is zeroed if it s/b ignored.
726: *
727: * Results:
728: * None
729: *
730: * Side Effects:
731: * Some nodes may be put on the toBeMade queue.
732: * Final commands for the job are placed on postCommands.
733: *
1.6 ! millert 734: * If we got an error and are aborting (aborting == ABORT_ERROR) and
1.1 deraadt 735: * the job list is now empty, we are done for the day.
1.6 ! millert 736: * If we recognized an error (errors !=0), we set the aborting flag
1.1 deraadt 737: * to ABORT_ERROR so no more jobs will be started.
738: *-----------------------------------------------------------------------
739: */
740: /*ARGSUSED*/
741: static void
1.2 deraadt 742: JobFinish(job, status)
743: Job *job; /* job to finish */
744: int *status; /* sub-why job went away */
745: {
746: Boolean done;
747:
748: if ((WIFEXITED(*status) &&
749: (((WEXITSTATUS(*status) != 0) && !(job->flags & JOB_IGNERR)))) ||
750: (WIFSIGNALED(*status) && (WTERMSIG(*status) != SIGCONT)))
1.1 deraadt 751: {
752: /*
753: * If it exited non-zero and either we're doing things our
754: * way or we're not ignoring errors, the job is finished.
755: * Similarly, if the shell died because of a signal
756: * the job is also finished. In these
757: * cases, finish out the job's output before printing the exit
758: * status...
759: */
1.2 deraadt 760: #ifdef REMOTE
761: KILL(job->pid, SIGCONT);
762: #endif
763: JobClose(job);
1.1 deraadt 764: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1.2 deraadt 765: (void) fclose(job->cmdFILE);
1.1 deraadt 766: }
767: done = TRUE;
1.2 deraadt 768: #ifdef REMOTE
769: if (job->flags & JOB_REMOTE)
770: Rmt_Done(job->rmtID, job->node);
771: #endif
772: } else if (WIFEXITED(*status)) {
1.1 deraadt 773: /*
774: * Deal with ignored errors in -B mode. We need to print a message
775: * telling of the ignored error as well as setting status.w_status
776: * to 0 so the next command gets run. To do this, we set done to be
1.2 deraadt 777: * TRUE if in -B mode and the job exited non-zero.
778: */
779: done = WEXITSTATUS(*status) != 0;
1.6 ! millert 780: /*
1.2 deraadt 781: * Old comment said: "Note we don't
1.1 deraadt 782: * want to close down any of the streams until we know we're at the
1.2 deraadt 783: * end."
784: * But we do. Otherwise when are we going to print the rest of the
785: * stuff?
786: */
787: JobClose(job);
788: #ifdef REMOTE
789: if (job->flags & JOB_REMOTE)
790: Rmt_Done(job->rmtID, job->node);
791: #endif /* REMOTE */
1.1 deraadt 792: } else {
793: /*
794: * No need to close things down or anything.
795: */
796: done = FALSE;
797: }
1.6 ! millert 798:
1.1 deraadt 799: if (done ||
1.2 deraadt 800: WIFSTOPPED(*status) ||
801: (WIFSIGNALED(*status) && (WTERMSIG(*status) == SIGCONT)) ||
1.1 deraadt 802: DEBUG(JOB))
803: {
804: FILE *out;
1.6 ! millert 805:
1.2 deraadt 806: if (compatMake && !usePipes && (job->flags & JOB_IGNERR)) {
1.1 deraadt 807: /*
808: * If output is going to a file and this job is ignoring
809: * errors, arrange to have the exit status sent to the
810: * output file as well.
811: */
1.2 deraadt 812: out = fdopen(job->outFd, "w");
1.1 deraadt 813: } else {
814: out = stdout;
815: }
816:
1.2 deraadt 817: if (WIFEXITED(*status)) {
818: if (DEBUG(JOB)) {
819: (void) fprintf(stdout, "Process %d exited.\n", job->pid);
820: (void) fflush(stdout);
821: }
822: if (WEXITSTATUS(*status) != 0) {
1.1 deraadt 823: if (usePipes && job->node != lastNode) {
1.2 deraadt 824: MESSAGE(out, job->node);
1.1 deraadt 825: lastNode = job->node;
826: }
1.2 deraadt 827: (void) fprintf(out, "*** Error code %d%s\n",
828: WEXITSTATUS(*status),
829: (job->flags & JOB_IGNERR) ? "(ignored)" : "");
1.1 deraadt 830:
831: if (job->flags & JOB_IGNERR) {
1.2 deraadt 832: *status = 0;
1.1 deraadt 833: }
834: } else if (DEBUG(JOB)) {
835: if (usePipes && job->node != lastNode) {
1.2 deraadt 836: MESSAGE(out, job->node);
1.1 deraadt 837: lastNode = job->node;
838: }
1.2 deraadt 839: (void) fprintf(out, "*** Completed successfully\n");
840: }
841: } else if (WIFSTOPPED(*status)) {
842: if (DEBUG(JOB)) {
843: (void) fprintf(stdout, "Process %d stopped.\n", job->pid);
844: (void) fflush(stdout);
1.1 deraadt 845: }
846: if (usePipes && job->node != lastNode) {
1.2 deraadt 847: MESSAGE(out, job->node);
1.1 deraadt 848: lastNode = job->node;
849: }
1.2 deraadt 850: if (!(job->flags & JOB_REMIGRATE)) {
1.6 ! millert 851: (void) fprintf(out, "*** Stopped -- signal %d\n",
! 852: WSTOPSIG(*status));
1.1 deraadt 853: }
854: job->flags |= JOB_RESUME;
855: (void)Lst_AtEnd(stoppedJobs, (ClientData)job);
1.2 deraadt 856: #ifdef REMOTE
857: if (job->flags & JOB_REMIGRATE)
858: JobRestart(job);
859: #endif
860: (void) fflush(out);
1.1 deraadt 861: return;
1.2 deraadt 862: } else if (WTERMSIG(*status) == SIGCONT) {
1.1 deraadt 863: /*
864: * If the beastie has continued, shift the Job from the stopped
1.6 ! millert 865: * list to the running one (or re-stop it if concurrency is
1.1 deraadt 866: * exceeded) and go and get another child.
867: */
868: if (job->flags & (JOB_RESUME|JOB_REMIGRATE|JOB_RESTART)) {
869: if (usePipes && job->node != lastNode) {
1.2 deraadt 870: MESSAGE(out, job->node);
1.1 deraadt 871: lastNode = job->node;
872: }
1.2 deraadt 873: (void) fprintf(out, "*** Continued\n");
1.1 deraadt 874: }
1.2 deraadt 875: if (!(job->flags & JOB_CONTINUING)) {
876: if (DEBUG(JOB)) {
877: (void) fprintf(stdout,
878: "Warning: process %d was not continuing.\n",
879: job->pid);
880: (void) fflush(stdout);
881: }
882: #ifdef notdef
883: /*
884: * We don't really want to restart a job from scratch just
885: * because it continued, especially not without killing the
886: * continuing process! That's why this is ifdef'ed out.
887: * FD - 9/17/90
888: */
1.1 deraadt 889: JobRestart(job);
1.2 deraadt 890: #endif
891: }
892: job->flags &= ~JOB_CONTINUING;
893: Lst_AtEnd(jobs, (ClientData)job);
894: nJobs += 1;
895: if (!(job->flags & JOB_REMOTE)) {
896: if (DEBUG(JOB)) {
897: (void) fprintf(stdout,
898: "Process %d is continuing locally.\n",
899: job->pid);
900: (void) fflush(stdout);
901: }
902: nLocal += 1;
1.1 deraadt 903: }
1.2 deraadt 904: if (nJobs == maxJobs) {
905: jobFull = TRUE;
906: if (DEBUG(JOB)) {
907: (void) fprintf(stdout, "Job queue is full.\n");
908: (void) fflush(stdout);
909: }
910: }
911: (void) fflush(out);
912: return;
1.1 deraadt 913: } else {
914: if (usePipes && job->node != lastNode) {
1.2 deraadt 915: MESSAGE(out, job->node);
1.1 deraadt 916: lastNode = job->node;
917: }
1.2 deraadt 918: (void) fprintf(out, "*** Signal %d\n", WTERMSIG(*status));
1.1 deraadt 919: }
920:
1.2 deraadt 921: (void) fflush(out);
1.1 deraadt 922: }
923:
924: /*
925: * Now handle the -B-mode stuff. If the beast still isn't finished,
926: * try and restart the job on the next command. If JobStart says it's
927: * ok, it's ok. If there's an error, this puppy is done.
928: */
1.2 deraadt 929: if (compatMake && (WIFEXITED(*status) &&
930: !Lst_IsAtEnd(job->node->commands))) {
931: switch (JobStart(job->node, job->flags & JOB_IGNDOTS, job)) {
932: case JOB_RUNNING:
933: done = FALSE;
934: break;
935: case JOB_ERROR:
936: done = TRUE;
937: W_SETEXITSTATUS(status, 1);
938: break;
939: case JOB_FINISHED:
940: /*
941: * If we got back a JOB_FINISHED code, JobStart has already
942: * called Make_Update and freed the job descriptor. We set
943: * done to false here to avoid fake cycles and double frees.
944: * JobStart needs to do the update so we can proceed up the
945: * graph when given the -n flag..
946: */
947: done = FALSE;
948: break;
1.1 deraadt 949: }
950: } else {
951: done = TRUE;
952: }
1.6 ! millert 953:
1.1 deraadt 954:
955: if (done &&
956: (aborting != ABORT_ERROR) &&
957: (aborting != ABORT_INTERRUPT) &&
1.2 deraadt 958: (*status == 0))
1.1 deraadt 959: {
960: /*
961: * As long as we aren't aborting and the job didn't return a non-zero
962: * status that we shouldn't ignore, we call Make_Update to update
963: * the parents. In addition, any saved commands for the node are placed
964: * on the .END target.
965: */
966: if (job->tailCmds != NILLNODE) {
1.2 deraadt 967: Lst_ForEachFrom(job->node->commands, job->tailCmds,
1.1 deraadt 968: JobSaveCommand,
1.2 deraadt 969: (ClientData)job->node);
1.1 deraadt 970: }
971: job->node->made = MADE;
1.2 deraadt 972: Make_Update(job->node);
1.1 deraadt 973: free((Address)job);
1.5 briggs 974: } else if (*status != 0) {
1.1 deraadt 975: errors += 1;
976: free((Address)job);
977: }
978:
1.2 deraadt 979: JobRestartJobs();
1.1 deraadt 980:
981: /*
982: * Set aborting if any error.
983: */
984: if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) {
985: /*
986: * If we found any errors in this batch of children and the -k flag
987: * wasn't given, we set the aborting flag so no more jobs get
988: * started.
989: */
990: aborting = ABORT_ERROR;
991: }
1.6 ! millert 992:
1.1 deraadt 993: if ((aborting == ABORT_ERROR) && Job_Empty()) {
994: /*
995: * If we are aborting and the job table is now empty, we finish.
996: */
1.2 deraadt 997: (void) eunlink(tfile);
998: Finish(errors);
1.1 deraadt 999: }
1000: }
1001:
1002: /*-
1003: *-----------------------------------------------------------------------
1004: * Job_Touch --
1005: * Touch the given target. Called by JobStart when the -t flag was
1006: * given
1007: *
1008: * Results:
1009: * None
1010: *
1011: * Side Effects:
1012: * The data modification of the file is changed. In addition, if the
1013: * file did not exist, it is created.
1014: *-----------------------------------------------------------------------
1015: */
1016: void
1.2 deraadt 1017: Job_Touch(gn, silent)
1.1 deraadt 1018: GNode *gn; /* the node of the file to touch */
1019: Boolean silent; /* TRUE if should not print messages */
1020: {
1021: int streamID; /* ID of stream opened to do the touch */
1.3 niklas 1022: struct utimbuf times; /* Times for utime() call */
1.1 deraadt 1023:
1024: if (gn->type & (OP_JOIN|OP_USE|OP_EXEC|OP_OPTIONAL)) {
1025: /*
1026: * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
1027: * and, as such, shouldn't really be created.
1028: */
1029: return;
1030: }
1.6 ! millert 1031:
1.1 deraadt 1032: if (!silent) {
1.2 deraadt 1033: (void) fprintf(stdout, "touch %s\n", gn->name);
1034: (void) fflush(stdout);
1.1 deraadt 1035: }
1036:
1037: if (noExecute) {
1038: return;
1039: }
1040:
1041: if (gn->type & OP_ARCHV) {
1.2 deraadt 1042: Arch_Touch(gn);
1.1 deraadt 1043: } else if (gn->type & OP_LIB) {
1.2 deraadt 1044: Arch_TouchLib(gn);
1.1 deraadt 1045: } else {
1046: char *file = gn->path ? gn->path : gn->name;
1047:
1.3 niklas 1048: times.actime = times.modtime = now;
1049: if (utime(file, ×) < 0){
1.2 deraadt 1050: streamID = open(file, O_RDWR | O_CREAT, 0666);
1.1 deraadt 1051:
1052: if (streamID >= 0) {
1053: char c;
1054:
1055: /*
1056: * Read and write a byte to the file to change the
1057: * modification time, then close the file.
1058: */
1059: if (read(streamID, &c, 1) == 1) {
1.2 deraadt 1060: (void) lseek(streamID, 0L, L_SET);
1061: (void) write(streamID, &c, 1);
1.1 deraadt 1062: }
1.6 ! millert 1063:
1.2 deraadt 1064: (void) close(streamID);
1065: } else {
1066: (void) fprintf(stdout, "*** couldn't touch %s: %s",
1067: file, strerror(errno));
1068: (void) fflush(stdout);
1069: }
1.1 deraadt 1070: }
1071: }
1072: }
1073:
1074: /*-
1075: *-----------------------------------------------------------------------
1076: * Job_CheckCommands --
1.6 ! millert 1077: * Make sure the given node has all the commands it needs.
1.1 deraadt 1078: *
1079: * Results:
1080: * TRUE if the commands list is/was ok.
1081: *
1082: * Side Effects:
1083: * The node will have commands from the .DEFAULT rule added to it
1084: * if it needs them.
1085: *-----------------------------------------------------------------------
1086: */
1087: Boolean
1.2 deraadt 1088: Job_CheckCommands(gn, abortProc)
1.1 deraadt 1089: GNode *gn; /* The target whose commands need
1090: * verifying */
1.6 ! millert 1091: void (*abortProc) __P((char *, ...));
1.1 deraadt 1092: /* Function to abort with message */
1093: {
1.2 deraadt 1094: if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
1.1 deraadt 1095: (gn->type & OP_LIB) == 0) {
1096: /*
1097: * No commands. Look for .DEFAULT rule from which we might infer
1.6 ! millert 1098: * commands
1.1 deraadt 1099: */
1100: if ((DEFAULT != NILGNODE) && !Lst_IsEmpty(DEFAULT->commands)) {
1101: char *p1;
1102: /*
1103: * Make only looks for a .DEFAULT if the node was never the
1104: * target of an operator, so that's what we do too. If
1105: * a .DEFAULT was given, we substitute its commands for gn's
1106: * commands and set the IMPSRC variable to be the target's name
1107: * The DEFAULT node acts like a transformation rule, in that
1108: * gn also inherits any attributes or sources attached to
1109: * .DEFAULT itself.
1110: */
1111: Make_HandleUse(DEFAULT, gn);
1.2 deraadt 1112: Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), gn);
1.1 deraadt 1113: if (p1)
1114: free(p1);
1.2 deraadt 1115: } else if (Dir_MTime(gn) == 0) {
1.1 deraadt 1116: /*
1117: * The node wasn't the target of an operator we have no .DEFAULT
1118: * rule to go on and the target doesn't already exist. There's
1119: * nothing more we can do for this branch. If the -k flag wasn't
1120: * given, we stop in our tracks, otherwise we just don't update
1.6 ! millert 1121: * this node's parents so they never get examined.
1.1 deraadt 1122: */
1.2 deraadt 1123: static const char msg[] = "make: don't know how to make";
1124:
1.1 deraadt 1125: if (gn->type & OP_OPTIONAL) {
1.2 deraadt 1126: (void) fprintf(stdout, "%s %s(ignored)\n", msg, gn->name);
1127: (void) fflush(stdout);
1.1 deraadt 1128: } else if (keepgoing) {
1.2 deraadt 1129: (void) fprintf(stdout, "%s %s(continuing)\n", msg, gn->name);
1130: (void) fflush(stdout);
1131: return FALSE;
1.1 deraadt 1132: } else {
1.2 deraadt 1133: (*abortProc)("%s %s. Stop", msg, gn->name);
1134: return FALSE;
1.1 deraadt 1135: }
1136: }
1137: }
1.2 deraadt 1138: return TRUE;
1.1 deraadt 1139: }
1140: #ifdef RMT_WILL_WATCH
1141: /*-
1142: *-----------------------------------------------------------------------
1143: * JobLocalInput --
1144: * Handle a pipe becoming readable. Callback function for Rmt_Watch
1145: *
1146: * Results:
1147: * None
1148: *
1149: * Side Effects:
1150: * JobDoOutput is called.
1.6 ! millert 1151: *
1.1 deraadt 1152: *-----------------------------------------------------------------------
1153: */
1154: /*ARGSUSED*/
1155: static void
1156: JobLocalInput(stream, job)
1.6 ! millert 1157: int stream; /* Stream that's ready (ignored) */
1.1 deraadt 1158: Job *job; /* Job to which the stream belongs */
1159: {
1160: JobDoOutput(job, FALSE);
1161: }
1162: #endif /* RMT_WILL_WATCH */
1163:
1164: /*-
1165: *-----------------------------------------------------------------------
1166: * JobExec --
1167: * Execute the shell for the given job. Called from JobStart and
1168: * JobRestart.
1169: *
1170: * Results:
1171: * None.
1172: *
1173: * Side Effects:
1174: * A shell is executed, outputs is altered and the Job structure added
1175: * to the job table.
1176: *
1177: *-----------------------------------------------------------------------
1178: */
1179: static void
1180: JobExec(job, argv)
1181: Job *job; /* Job to execute */
1182: char **argv;
1183: {
1184: int cpid; /* ID of new child */
1.6 ! millert 1185:
1.1 deraadt 1186: if (DEBUG(JOB)) {
1187: int i;
1.6 ! millert 1188:
1.2 deraadt 1189: (void) fprintf(stdout, "Running %s %sly\n", job->node->name,
1190: job->flags&JOB_REMOTE?"remote":"local");
1191: (void) fprintf(stdout, "\tCommand: ");
1192: for (i = 0; argv[i] != NULL; i++) {
1193: (void) fprintf(stdout, "%s ", argv[i]);
1.1 deraadt 1194: }
1.2 deraadt 1195: (void) fprintf(stdout, "\n");
1196: (void) fflush(stdout);
1.1 deraadt 1197: }
1.6 ! millert 1198:
1.1 deraadt 1199: /*
1200: * Some jobs produce no output and it's disconcerting to have
1.6 ! millert 1201: * no feedback of their running (since they produce no output, the
1.1 deraadt 1202: * banner with their name in it never appears). This is an attempt to
1203: * provide that feedback, even if nothing follows it.
1204: */
1205: if ((lastNode != job->node) && (job->flags & JOB_FIRST) &&
1.2 deraadt 1206: !(job->flags & JOB_SILENT)) {
1207: MESSAGE(stdout, job->node);
1.1 deraadt 1208: lastNode = job->node;
1209: }
1.6 ! millert 1210:
1.1 deraadt 1211: #ifdef RMT_NO_EXEC
1212: if (job->flags & JOB_REMOTE) {
1213: goto jobExecFinish;
1214: }
1215: #endif /* RMT_NO_EXEC */
1216:
1.2 deraadt 1217: if ((cpid = vfork()) == -1) {
1218: Punt("Cannot fork");
1.1 deraadt 1219: } else if (cpid == 0) {
1220:
1221: /*
1222: * Must duplicate the input stream down to the child's input and
1.6 ! millert 1223: * reset it to the beginning (again). Since the stream was marked
1.1 deraadt 1224: * close-on-exec, we must clear that bit in the new input.
1225: */
1.2 deraadt 1226: if (dup2(FILENO(job->cmdFILE), 0) == -1)
1227: Punt("Cannot dup2: %s", strerror(errno));
1228: (void) fcntl(0, F_SETFD, 0);
1229: (void) lseek(0, 0, L_SET);
1.6 ! millert 1230:
1.1 deraadt 1231: if (usePipes) {
1232: /*
1233: * Set up the child's output to be routed through the pipe
1234: * we've created for it.
1235: */
1.2 deraadt 1236: if (dup2(job->outPipe, 1) == -1)
1237: Punt("Cannot dup2: %s", strerror(errno));
1.1 deraadt 1238: } else {
1239: /*
1240: * We're capturing output in a file, so we duplicate the
1241: * descriptor to the temporary file into the standard
1242: * output.
1243: */
1.2 deraadt 1244: if (dup2(job->outFd, 1) == -1)
1245: Punt("Cannot dup2: %s", strerror(errno));
1.1 deraadt 1246: }
1247: /*
1248: * The output channels are marked close on exec. This bit was
1.6 ! millert 1249: * duplicated by the dup2 (on some systems), so we have to clear
1.1 deraadt 1250: * it before routing the shell's error output to the same place as
1251: * its standard output.
1252: */
1.2 deraadt 1253: (void) fcntl(1, F_SETFD, 0);
1254: if (dup2(1, 2) == -1)
1255: Punt("Cannot dup2: %s", strerror(errno));
1.1 deraadt 1256:
1257: #ifdef USE_PGRP
1258: /*
1259: * We want to switch the child into a different process family so
1260: * we can kill it and all its descendants in one fell swoop,
1261: * by killing its process family, but not commit suicide.
1262: */
1.2 deraadt 1263: # if defined(SYSV)
1264: (void) setsid();
1265: # else
1266: (void) setpgid(0, getpid());
1267: # endif
1268: #endif /* USE_PGRP */
1.1 deraadt 1269:
1.2 deraadt 1270: #ifdef REMOTE
1271: if (job->flags & JOB_REMOTE) {
1272: Rmt_Exec(shellPath, argv, FALSE);
1.6 ! millert 1273: } else
1.2 deraadt 1274: #endif /* REMOTE */
1275: (void) execv(shellPath, argv);
1276:
1277: (void) write(2, "Could not execute shell\n",
1278: sizeof("Could not execute shell"));
1279: _exit(1);
1.1 deraadt 1280: } else {
1.2 deraadt 1281: #ifdef REMOTE
1282: long omask = sigblock(sigmask(SIGCHLD));
1283: #endif
1.1 deraadt 1284: job->pid = cpid;
1285:
1286: if (usePipes && (job->flags & JOB_FIRST) ) {
1287: /*
1288: * The first time a job is run for a node, we set the current
1289: * position in the buffer to the beginning and mark another
1290: * stream to watch in the outputs mask
1291: */
1292: job->curPos = 0;
1.6 ! millert 1293:
1.1 deraadt 1294: #ifdef RMT_WILL_WATCH
1295: Rmt_Watch(job->inPipe, JobLocalInput, job);
1296: #else
1297: FD_SET(job->inPipe, &outputs);
1298: #endif /* RMT_WILL_WATCH */
1299: }
1300:
1301: if (job->flags & JOB_REMOTE) {
1.2 deraadt 1302: #ifndef REMOTE
1.1 deraadt 1303: job->rmtID = 0;
1.2 deraadt 1304: #else
1305: job->rmtID = Rmt_LastID(job->pid);
1306: #endif /* REMOTE */
1.1 deraadt 1307: } else {
1308: nLocal += 1;
1309: /*
1.2 deraadt 1310: * XXX: Used to not happen if REMOTE. Why?
1.1 deraadt 1311: */
1.2 deraadt 1312: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1313: (void) fclose(job->cmdFILE);
1.1 deraadt 1314: job->cmdFILE = NULL;
1315: }
1316: }
1.2 deraadt 1317: #ifdef REMOTE
1318: (void) sigsetmask(omask);
1319: #endif
1.1 deraadt 1320: }
1321:
1322: #ifdef RMT_NO_EXEC
1.6 ! millert 1323: jobExecFinish:
1.1 deraadt 1324: #endif
1325: /*
1326: * Now the job is actually running, add it to the table.
1327: */
1328: nJobs += 1;
1.2 deraadt 1329: (void) Lst_AtEnd(jobs, (ClientData)job);
1.1 deraadt 1330: if (nJobs == maxJobs) {
1331: jobFull = TRUE;
1332: }
1333: }
1334:
1335: /*-
1336: *-----------------------------------------------------------------------
1337: * JobMakeArgv --
1338: * Create the argv needed to execute the shell for a given job.
1.6 ! millert 1339: *
1.1 deraadt 1340: *
1341: * Results:
1342: *
1343: * Side Effects:
1344: *
1345: *-----------------------------------------------------------------------
1346: */
1347: static void
1348: JobMakeArgv(job, argv)
1349: Job *job;
1350: char **argv;
1351: {
1352: int argc;
1353: static char args[10]; /* For merged arguments */
1.6 ! millert 1354:
1.1 deraadt 1355: argv[0] = shellName;
1356: argc = 1;
1357:
1358: if ((commandShell->exit && (*commandShell->exit != '-')) ||
1359: (commandShell->echo && (*commandShell->echo != '-')))
1360: {
1361: /*
1362: * At least one of the flags doesn't have a minus before it, so
1363: * merge them together. Have to do this because the *(&(@*#*&#$#
1364: * Bourne shell thinks its second argument is a file to source.
1365: * Grrrr. Note the ten-character limitation on the combined arguments.
1366: */
1367: (void)sprintf(args, "-%s%s",
1368: ((job->flags & JOB_IGNERR) ? "" :
1369: (commandShell->exit ? commandShell->exit : "")),
1370: ((job->flags & JOB_SILENT) ? "" :
1371: (commandShell->echo ? commandShell->echo : "")));
1372:
1373: if (args[1]) {
1374: argv[argc] = args;
1375: argc++;
1376: }
1377: } else {
1378: if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
1379: argv[argc] = commandShell->exit;
1380: argc++;
1381: }
1382: if (!(job->flags & JOB_SILENT) && commandShell->echo) {
1383: argv[argc] = commandShell->echo;
1384: argc++;
1385: }
1386: }
1.2 deraadt 1387: argv[argc] = NULL;
1.1 deraadt 1388: }
1389:
1390: /*-
1391: *-----------------------------------------------------------------------
1392: * JobRestart --
1.6 ! millert 1393: * Restart a job that stopped for some reason.
1.1 deraadt 1394: *
1395: * Results:
1396: * None.
1397: *
1398: * Side Effects:
1399: * jobFull will be set if the job couldn't be run.
1400: *
1401: *-----------------------------------------------------------------------
1402: */
1403: static void
1404: JobRestart(job)
1405: Job *job; /* Job to restart */
1406: {
1.2 deraadt 1407: #ifdef REMOTE
1408: int host;
1409: #endif
1.6 ! millert 1410:
1.1 deraadt 1411: if (job->flags & JOB_REMIGRATE) {
1.2 deraadt 1412: if (
1413: #ifdef REMOTE
1414: verboseRemigrates ||
1415: #endif
1416: DEBUG(JOB)) {
1417: (void) fprintf(stdout, "*** remigrating %x(%s)\n",
1418: job->pid, job->node->name);
1419: (void) fflush(stdout);
1.1 deraadt 1420: }
1.2 deraadt 1421:
1422: #ifdef REMOTE
1423: if (!Rmt_ReExport(job->pid, job->node, &host)) {
1424: if (verboseRemigrates || DEBUG(JOB)) {
1425: (void) fprintf(stdout, "*** couldn't migrate...\n");
1426: (void) fflush(stdout);
1427: }
1428: #endif
1429: if (nLocal != maxLocal) {
1.1 deraadt 1430: /*
1431: * Job cannot be remigrated, but there's room on the local
1432: * machine, so resume the job and note that another
1433: * local job has started.
1434: */
1.2 deraadt 1435: if (
1436: #ifdef REMOTE
1437: verboseRemigrates ||
1438: #endif
1439: DEBUG(JOB)) {
1440: (void) fprintf(stdout, "*** resuming on local machine\n");
1441: (void) fflush(stdout);
1442: }
1.1 deraadt 1443: KILL(job->pid, SIGCONT);
1444: nLocal +=1;
1.2 deraadt 1445: #ifdef REMOTE
1446: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME|JOB_REMOTE);
1447: job->flags |= JOB_CONTINUING;
1448: #else
1.1 deraadt 1449: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1.2 deraadt 1450: #endif
1.1 deraadt 1451: } else {
1452: /*
1453: * Job cannot be restarted. Mark the table as full and
1454: * place the job back on the list of stopped jobs.
1455: */
1.2 deraadt 1456: if (
1457: #ifdef REMOTE
1458: verboseRemigrates ||
1459: #endif
1460: DEBUG(JOB)) {
1461: (void) fprintf(stdout, "*** holding\n");
1462: (void) fflush(stdout);
1463: }
1.1 deraadt 1464: (void)Lst_AtFront(stoppedJobs, (ClientData)job);
1465: jobFull = TRUE;
1466: if (DEBUG(JOB)) {
1.2 deraadt 1467: (void) fprintf(stdout, "Job queue is full.\n");
1468: (void) fflush(stdout);
1.1 deraadt 1469: }
1470: return;
1.2 deraadt 1471: }
1472: #ifdef REMOTE
1473: } else {
1474: /*
1475: * Clear out the remigrate and resume flags. Set the continuing
1476: * flag so we know later on that the process isn't exiting just
1477: * because of a signal.
1478: */
1479: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1480: job->flags |= JOB_CONTINUING;
1481: job->rmtID = host;
1.1 deraadt 1482: }
1.2 deraadt 1483: #endif
1.6 ! millert 1484:
1.1 deraadt 1485: (void)Lst_AtEnd(jobs, (ClientData)job);
1486: nJobs += 1;
1487: if (nJobs == maxJobs) {
1488: jobFull = TRUE;
1489: if (DEBUG(JOB)) {
1.2 deraadt 1490: (void) fprintf(stdout, "Job queue is full.\n");
1491: (void) fflush(stdout);
1.1 deraadt 1492: }
1493: }
1494: } else if (job->flags & JOB_RESTART) {
1495: /*
1496: * Set up the control arguments to the shell. This is based on the
1497: * flags set earlier for this job. If the JOB_IGNERR flag is clear,
1498: * the 'exit' flag of the commandShell is used to cause it to exit
1499: * upon receiving an error. If the JOB_SILENT flag is clear, the
1500: * 'echo' flag of the commandShell is used to get it to start echoing
1.6 ! millert 1501: * as soon as it starts processing commands.
1.1 deraadt 1502: */
1503: char *argv[4];
1.6 ! millert 1504:
1.1 deraadt 1505: JobMakeArgv(job, argv);
1.2 deraadt 1506:
1.1 deraadt 1507: if (DEBUG(JOB)) {
1.2 deraadt 1508: (void) fprintf(stdout, "Restarting %s...", job->node->name);
1509: (void) fflush(stdout);
1.1 deraadt 1510: }
1.2 deraadt 1511: #ifdef REMOTE
1512: if ((job->node->type&OP_NOEXPORT) ||
1.6 ! millert 1513: (nLocal < maxLocal && runLocalFirst)
1.2 deraadt 1514: # ifdef RMT_NO_EXEC
1515: || !Rmt_Export(shellPath, argv, job)
1516: # else
1517: || !Rmt_Begin(shellPath, argv, job->node)
1518: # endif
1519: #endif
1520: {
1521: if (((nLocal >= maxLocal) && !(job->flags & JOB_SPECIAL))) {
1.1 deraadt 1522: /*
1523: * Can't be exported and not allowed to run locally -- put it
1524: * back on the hold queue and mark the table full
1525: */
1526: if (DEBUG(JOB)) {
1.2 deraadt 1527: (void) fprintf(stdout, "holding\n");
1528: (void) fflush(stdout);
1.1 deraadt 1529: }
1530: (void)Lst_AtFront(stoppedJobs, (ClientData)job);
1531: jobFull = TRUE;
1532: if (DEBUG(JOB)) {
1.2 deraadt 1533: (void) fprintf(stdout, "Job queue is full.\n");
1534: (void) fflush(stdout);
1.1 deraadt 1535: }
1536: return;
1.2 deraadt 1537: } else {
1.1 deraadt 1538: /*
1539: * Job may be run locally.
1540: */
1541: if (DEBUG(JOB)) {
1.2 deraadt 1542: (void) fprintf(stdout, "running locally\n");
1543: (void) fflush(stdout);
1.1 deraadt 1544: }
1545: job->flags &= ~JOB_REMOTE;
1.2 deraadt 1546: }
1547: }
1548: #ifdef REMOTE
1549: else {
1550: /*
1551: * Can be exported. Hooray!
1552: */
1553: if (DEBUG(JOB)) {
1554: (void) fprintf(stdout, "exporting\n");
1555: (void) fflush(stdout);
1556: }
1557: job->flags |= JOB_REMOTE;
1.1 deraadt 1558: }
1.2 deraadt 1559: #endif
1.1 deraadt 1560: JobExec(job, argv);
1561: } else {
1562: /*
1563: * The job has stopped and needs to be restarted. Why it stopped,
1564: * we don't know...
1565: */
1566: if (DEBUG(JOB)) {
1.2 deraadt 1567: (void) fprintf(stdout, "Resuming %s...", job->node->name);
1568: (void) fflush(stdout);
1.1 deraadt 1569: }
1570: if (((job->flags & JOB_REMOTE) ||
1.2 deraadt 1571: (nLocal < maxLocal) ||
1572: #ifdef REMOTE
1573: (((job->flags & JOB_SPECIAL) &&
1574: (job->node->type & OP_NOEXPORT)) &&
1575: (maxLocal == 0))) &&
1576: #else
1577: ((job->flags & JOB_SPECIAL) &&
1578: (maxLocal == 0))) &&
1579: #endif
1580: (nJobs != maxJobs))
1.1 deraadt 1581: {
1582: /*
1583: * If the job is remote, it's ok to resume it as long as the
1584: * maximum concurrency won't be exceeded. If it's local and
1.6 ! millert 1585: * we haven't reached the local concurrency limit already (or the
1.1 deraadt 1586: * job must be run locally and maxLocal is 0), it's also ok to
1587: * resume it.
1588: */
1589: Boolean error;
1590: extern int errno;
1.2 deraadt 1591: int status;
1.6 ! millert 1592:
1.1 deraadt 1593: #ifdef RMT_WANTS_SIGNALS
1594: if (job->flags & JOB_REMOTE) {
1595: error = !Rmt_Signal(job, SIGCONT);
1596: } else
1597: #endif /* RMT_WANTS_SIGNALS */
1598: error = (KILL(job->pid, SIGCONT) != 0);
1599:
1600: if (!error) {
1601: /*
1602: * Make sure the user knows we've continued the beast and
1603: * actually put the thing in the job table.
1604: */
1605: job->flags |= JOB_CONTINUING;
1.2 deraadt 1606: W_SETTERMSIG(&status, SIGCONT);
1607: JobFinish(job, &status);
1.6 ! millert 1608:
1.1 deraadt 1609: job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
1610: if (DEBUG(JOB)) {
1.2 deraadt 1611: (void) fprintf(stdout, "done\n");
1612: (void) fflush(stdout);
1.1 deraadt 1613: }
1614: } else {
1615: Error("couldn't resume %s: %s",
1616: job->node->name, strerror(errno));
1.2 deraadt 1617: status = 0;
1618: W_SETEXITSTATUS(&status, 1);
1619: JobFinish(job, &status);
1.1 deraadt 1620: }
1621: } else {
1622: /*
1623: * Job cannot be restarted. Mark the table as full and
1624: * place the job back on the list of stopped jobs.
1625: */
1626: if (DEBUG(JOB)) {
1.2 deraadt 1627: (void) fprintf(stdout, "table full\n");
1628: (void) fflush(stdout);
1.1 deraadt 1629: }
1.2 deraadt 1630: (void) Lst_AtFront(stoppedJobs, (ClientData)job);
1.1 deraadt 1631: jobFull = TRUE;
1632: if (DEBUG(JOB)) {
1.2 deraadt 1633: (void) fprintf(stdout, "Job queue is full.\n");
1634: (void) fflush(stdout);
1.1 deraadt 1635: }
1636: }
1637: }
1638: }
1639:
1640: /*-
1641: *-----------------------------------------------------------------------
1642: * JobStart --
1643: * Start a target-creation process going for the target described
1.6 ! millert 1644: * by the graph node gn.
1.1 deraadt 1645: *
1646: * Results:
1647: * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1648: * if there isn't actually anything left to do for the job and
1649: * JOB_RUNNING if the job has been started.
1650: *
1651: * Side Effects:
1652: * A new Job node is created and added to the list of running
1653: * jobs. PMake is forked and a child shell created.
1654: *-----------------------------------------------------------------------
1655: */
1656: static int
1.2 deraadt 1657: JobStart(gn, flags, previous)
1.1 deraadt 1658: GNode *gn; /* target to create */
1659: int flags; /* flags for the job to override normal ones.
1660: * e.g. JOB_SPECIAL or JOB_IGNDOTS */
1661: Job *previous; /* The previous Job structure for this node,
1662: * if any. */
1663: {
1664: register Job *job; /* new job descriptor */
1665: char *argv[4]; /* Argument vector to shell */
1666: static int jobno = 0; /* job number of catching output in a file */
1667: Boolean cmdsOK; /* true if the nodes commands were all right */
1668: Boolean local; /* Set true if the job was run locally */
1669: Boolean noExec; /* Set true if we decide not to run the job */
1670:
1.2 deraadt 1671: if (previous != NULL) {
1672: previous->flags &= ~(JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
1.1 deraadt 1673: job = previous;
1674: } else {
1.2 deraadt 1675: job = (Job *) emalloc(sizeof(Job));
1676: if (job == NULL) {
1.1 deraadt 1677: Punt("JobStart out of memory");
1678: }
1679: flags |= JOB_FIRST;
1680: }
1681:
1682: job->node = gn;
1683: job->tailCmds = NILLNODE;
1684:
1685: /*
1686: * Set the initial value of the flags for this job based on the global
1687: * ones and the node's attributes... Any flags supplied by the caller
1688: * are also added to the field.
1689: */
1690: job->flags = 0;
1.2 deraadt 1691: if (Targ_Ignore(gn)) {
1.1 deraadt 1692: job->flags |= JOB_IGNERR;
1693: }
1.2 deraadt 1694: if (Targ_Silent(gn)) {
1.1 deraadt 1695: job->flags |= JOB_SILENT;
1696: }
1697: job->flags |= flags;
1698:
1699: /*
1700: * Check the commands now so any attributes from .DEFAULT have a chance
1701: * to migrate to the node
1702: */
1.2 deraadt 1703: if (!compatMake && job->flags & JOB_FIRST) {
1.1 deraadt 1704: cmdsOK = Job_CheckCommands(gn, Error);
1705: } else {
1706: cmdsOK = TRUE;
1707: }
1.6 ! millert 1708:
1.1 deraadt 1709: /*
1.6 ! millert 1710: * If the -n flag wasn't given, we open up OUR (not the child's)
1.1 deraadt 1711: * temporary file to stuff commands in it. The thing is rd/wr so we don't
1712: * need to reopen it to feed it to the shell. If the -n flag *was* given,
1713: * we just set the file to be stdout. Cute, huh?
1714: */
1715: if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) {
1716: /*
1717: * We're serious here, but if the commands were bogus, we're
1718: * also dead...
1719: */
1720: if (!cmdsOK) {
1721: DieHorribly();
1722: }
1.6 ! millert 1723:
1.2 deraadt 1724: job->cmdFILE = fopen(tfile, "w+");
1725: if (job->cmdFILE == NULL) {
1726: Punt("Could not open %s", tfile);
1.1 deraadt 1727: }
1.2 deraadt 1728: (void) fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
1.1 deraadt 1729: /*
1730: * Send the commands to the command file, flush all its buffers then
1731: * rewind and remove the thing.
1732: */
1733: noExec = FALSE;
1734:
1735: /*
1736: * used to be backwards; replace when start doing multiple commands
1737: * per shell.
1738: */
1739: if (compatMake) {
1740: /*
1741: * Be compatible: If this is the first time for this node,
1742: * verify its commands are ok and open the commands list for
1743: * sequential access by later invocations of JobStart.
1744: * Once that is done, we take the next command off the list
1745: * and print it to the command file. If the command was an
1746: * ellipsis, note that there's nothing more to execute.
1747: */
1748: if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){
1749: cmdsOK = FALSE;
1750: } else {
1.2 deraadt 1751: LstNode ln = Lst_Next(gn->commands);
1.6 ! millert 1752:
1.1 deraadt 1753: if ((ln == NILLNODE) ||
1.2 deraadt 1754: JobPrintCommand((ClientData) Lst_Datum(ln),
1755: (ClientData) job))
1.1 deraadt 1756: {
1757: noExec = TRUE;
1.2 deraadt 1758: Lst_Close(gn->commands);
1.1 deraadt 1759: }
1760: if (noExec && !(job->flags & JOB_FIRST)) {
1761: /*
1762: * If we're not going to execute anything, the job
1763: * is done and we need to close down the various
1764: * file descriptors we've opened for output, then
1765: * call JobDoOutput to catch the final characters or
1766: * send the file to the screen... Note that the i/o streams
1767: * are only open if this isn't the first job.
1768: * Note also that this could not be done in
1769: * Job_CatchChildren b/c it wasn't clear if there were
1770: * more commands to execute or not...
1771: */
1.2 deraadt 1772: JobClose(job);
1.1 deraadt 1773: }
1774: }
1775: } else {
1776: /*
1777: * We can do all the commands at once. hooray for sanity
1778: */
1779: numCommands = 0;
1.2 deraadt 1780: Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
1.6 ! millert 1781:
1.1 deraadt 1782: /*
1783: * If we didn't print out any commands to the shell script,
1784: * there's not much point in executing the shell, is there?
1785: */
1786: if (numCommands == 0) {
1787: noExec = TRUE;
1788: }
1789: }
1790: } else if (noExecute) {
1791: /*
1792: * Not executing anything -- just print all the commands to stdout
1793: * in one fell swoop. This will still set up job->tailCmds correctly.
1794: */
1795: if (lastNode != gn) {
1.2 deraadt 1796: MESSAGE(stdout, gn);
1.1 deraadt 1797: lastNode = gn;
1798: }
1799: job->cmdFILE = stdout;
1800: /*
1801: * Only print the commands if they're ok, but don't die if they're
1802: * not -- just let the user know they're bad and keep going. It
1803: * doesn't do any harm in this case and may do some good.
1804: */
1805: if (cmdsOK) {
1806: Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
1807: }
1808: /*
1809: * Don't execute the shell, thank you.
1810: */
1811: noExec = TRUE;
1812: } else {
1813: /*
1814: * Just touch the target and note that no shell should be executed.
1815: * Set cmdFILE to stdout to make life easier. Check the commands, too,
1816: * but don't die if they're no good -- it does no harm to keep working
1817: * up the graph.
1818: */
1819: job->cmdFILE = stdout;
1.2 deraadt 1820: Job_Touch(gn, job->flags&JOB_SILENT);
1.1 deraadt 1821: noExec = TRUE;
1822: }
1823:
1824: /*
1.6 ! millert 1825: * If we're not supposed to execute a shell, don't.
1.1 deraadt 1826: */
1827: if (noExec) {
1828: /*
1829: * Unlink and close the command file if we opened one
1830: */
1831: if (job->cmdFILE != stdout) {
1.2 deraadt 1832: (void) eunlink(tfile);
1833: if (job->cmdFILE != NULL)
1834: (void) fclose(job->cmdFILE);
1.1 deraadt 1835: } else {
1.2 deraadt 1836: (void) fflush(stdout);
1.1 deraadt 1837: }
1838:
1839: /*
1840: * We only want to work our way up the graph if we aren't here because
1841: * the commands for the job were no good.
1842: */
1843: if (cmdsOK) {
1844: if (aborting == 0) {
1845: if (job->tailCmds != NILLNODE) {
1846: Lst_ForEachFrom(job->node->commands, job->tailCmds,
1847: JobSaveCommand,
1.2 deraadt 1848: (ClientData)job->node);
1.1 deraadt 1849: }
1850: Make_Update(job->node);
1851: }
1852: free((Address)job);
1853: return(JOB_FINISHED);
1854: } else {
1855: free((Address)job);
1856: return(JOB_ERROR);
1857: }
1858: } else {
1.2 deraadt 1859: (void) fflush(job->cmdFILE);
1860: (void) eunlink(tfile);
1.1 deraadt 1861: }
1862:
1863: /*
1864: * Set up the control arguments to the shell. This is based on the flags
1865: * set earlier for this job.
1866: */
1867: JobMakeArgv(job, argv);
1868:
1869: /*
1870: * If we're using pipes to catch output, create the pipe by which we'll
1871: * get the shell's output. If we're using files, print out that we're
1872: * starting a job and then set up its temporary-file name. This is just
1873: * tfile with two extra digits tacked on -- jobno.
1874: */
1.2 deraadt 1875: if (!compatMake || (job->flags & JOB_FIRST)) {
1.1 deraadt 1876: if (usePipes) {
1877: int fd[2];
1.2 deraadt 1878: if (pipe(fd) == -1)
1879: Punt("Cannot create pipe: %s", strerror(errno));
1.1 deraadt 1880: job->inPipe = fd[0];
1881: job->outPipe = fd[1];
1.2 deraadt 1882: (void) fcntl(job->inPipe, F_SETFD, 1);
1883: (void) fcntl(job->outPipe, F_SETFD, 1);
1.1 deraadt 1884: } else {
1.2 deraadt 1885: (void) fprintf(stdout, "Remaking `%s'\n", gn->name);
1886: (void) fflush(stdout);
1887: sprintf(job->outFile, "%s%02d", tfile, jobno);
1.1 deraadt 1888: jobno = (jobno + 1) % 100;
1889: job->outFd = open(job->outFile,O_WRONLY|O_CREAT|O_APPEND,0600);
1.2 deraadt 1890: (void) fcntl(job->outFd, F_SETFD, 1);
1.1 deraadt 1891: }
1892: }
1893:
1.2 deraadt 1894: #ifdef REMOTE
1895: if (!(gn->type & OP_NOEXPORT) && !(runLocalFirst && nLocal < maxLocal)) {
1896: #ifdef RMT_NO_EXEC
1897: local = !Rmt_Export(shellPath, argv, job);
1898: #else
1899: local = !Rmt_Begin(shellPath, argv, job->node);
1900: #endif /* RMT_NO_EXEC */
1901: if (!local) {
1902: job->flags |= JOB_REMOTE;
1903: }
1904: } else
1905: #endif
1906: local = TRUE;
1.1 deraadt 1907:
1908: if (local && (((nLocal >= maxLocal) &&
1.2 deraadt 1909: !(job->flags & JOB_SPECIAL) &&
1910: #ifdef REMOTE
1911: (!(gn->type & OP_NOEXPORT) || (maxLocal != 0))
1912: #else
1913: (maxLocal != 0)
1914: #endif
1915: )))
1.1 deraadt 1916: {
1917: /*
1918: * The job can only be run locally, but we've hit the limit of
1919: * local concurrency, so put the job on hold until some other job
1.6 ! millert 1920: * finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
1.1 deraadt 1921: * may be run locally even when the local limit has been reached
1.6 ! millert 1922: * (e.g. when maxLocal == 0), though they will be exported if at
1.2 deraadt 1923: * all possible. In addition, any target marked with .NOEXPORT will
1924: * be run locally if maxLocal is 0.
1.1 deraadt 1925: */
1926: jobFull = TRUE;
1.6 ! millert 1927:
1.1 deraadt 1928: if (DEBUG(JOB)) {
1.2 deraadt 1929: (void) fprintf(stdout, "Can only run job locally.\n");
1930: (void) fflush(stdout);
1.1 deraadt 1931: }
1932: job->flags |= JOB_RESTART;
1.2 deraadt 1933: (void) Lst_AtEnd(stoppedJobs, (ClientData)job);
1.1 deraadt 1934: } else {
1935: if ((nLocal >= maxLocal) && local) {
1936: /*
1.6 ! millert 1937: * If we're running this job locally as a special case (see above),
1.1 deraadt 1938: * at least say the table is full.
1939: */
1940: jobFull = TRUE;
1941: if (DEBUG(JOB)) {
1.2 deraadt 1942: (void) fprintf(stdout, "Local job queue is full.\n");
1943: (void) fflush(stdout);
1.1 deraadt 1944: }
1945: }
1946: JobExec(job, argv);
1947: }
1948: return(JOB_RUNNING);
1949: }
1950:
1.6 ! millert 1951: static char *
1.2 deraadt 1952: JobOutput(job, cp, endp, msg)
1953: register Job *job;
1954: register char *cp, *endp;
1955: int msg;
1956: {
1957: register char *ecp;
1958:
1959: if (commandShell->noPrint) {
1960: ecp = Str_FindSubstring(cp, commandShell->noPrint);
1961: while (ecp != NULL) {
1962: if (cp != ecp) {
1963: *ecp = '\0';
1964: if (msg && job->node != lastNode) {
1965: MESSAGE(stdout, job->node);
1966: lastNode = job->node;
1967: }
1968: /*
1969: * The only way there wouldn't be a newline after
1970: * this line is if it were the last in the buffer.
1971: * however, since the non-printable comes after it,
1972: * there must be a newline, so we don't print one.
1973: */
1974: (void) fprintf(stdout, "%s", cp);
1975: (void) fflush(stdout);
1976: }
1977: cp = ecp + commandShell->noPLen;
1978: if (cp != endp) {
1979: /*
1980: * Still more to print, look again after skipping
1981: * the whitespace following the non-printable
1982: * command....
1983: */
1984: cp++;
1985: while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
1986: cp++;
1987: }
1988: ecp = Str_FindSubstring(cp, commandShell->noPrint);
1989: } else {
1990: return cp;
1991: }
1992: }
1993: }
1994: return cp;
1995: }
1996:
1.1 deraadt 1997: /*-
1998: *-----------------------------------------------------------------------
1999: * JobDoOutput --
2000: * This function is called at different times depending on
2001: * whether the user has specified that output is to be collected
2002: * via pipes or temporary files. In the former case, we are called
2003: * whenever there is something to read on the pipe. We collect more
2004: * output from the given job and store it in the job's outBuf. If
2005: * this makes up a line, we print it tagged by the job's identifier,
2006: * as necessary.
2007: * If output has been collected in a temporary file, we open the
2008: * file and read it line by line, transfering it to our own
2009: * output channel until the file is empty. At which point we
2010: * remove the temporary file.
2011: * In both cases, however, we keep our figurative eye out for the
2012: * 'noPrint' line for the shell from which the output came. If
2013: * we recognize a line, we don't print it. If the command is not
1.6 ! millert 2014: * alone on the line (the character after it is not \0 or \n), we
1.1 deraadt 2015: * do print whatever follows it.
2016: *
2017: * Results:
2018: * None
2019: *
2020: * Side Effects:
2021: * curPos may be shifted as may the contents of outBuf.
2022: *-----------------------------------------------------------------------
2023: */
1.2 deraadt 2024: STATIC void
2025: JobDoOutput(job, finish)
1.1 deraadt 2026: register Job *job; /* the job whose output needs printing */
2027: Boolean finish; /* TRUE if this is the last time we'll be
2028: * called for this job */
2029: {
2030: Boolean gotNL = FALSE; /* true if got a newline */
1.2 deraadt 2031: Boolean fbuf; /* true if our buffer filled up */
1.1 deraadt 2032: register int nr; /* number of bytes read */
2033: register int i; /* auxiliary index into outBuf */
1.6 ! millert 2034: register int max; /* limit for i (end of current data) */
! 2035: int nRead; /* (Temporary) number of bytes read */
1.1 deraadt 2036:
2037: FILE *oFILE; /* Stream pointer to shell's output file */
2038: char inLine[132];
2039:
1.6 ! millert 2040:
1.1 deraadt 2041: if (usePipes) {
2042: /*
2043: * Read as many bytes as will fit in the buffer.
2044: */
2045: end_loop:
1.2 deraadt 2046: gotNL = FALSE;
2047: fbuf = FALSE;
1.6 ! millert 2048:
1.2 deraadt 2049: nRead = read(job->inPipe, &job->outBuf[job->curPos],
1.1 deraadt 2050: JOB_BUFSIZE - job->curPos);
2051: if (nRead < 0) {
2052: if (DEBUG(JOB)) {
2053: perror("JobDoOutput(piperead)");
2054: }
2055: nr = 0;
2056: } else {
2057: nr = nRead;
2058: }
2059:
2060: /*
1.6 ! millert 2061: * If we hit the end-of-file (the job is dead), we must flush its
1.1 deraadt 2062: * remaining output, so pretend we read a newline if there's any
2063: * output remaining in the buffer.
2064: * Also clear the 'finish' flag so we stop looping.
2065: */
2066: if ((nr == 0) && (job->curPos != 0)) {
2067: job->outBuf[job->curPos] = '\n';
2068: nr = 1;
2069: finish = FALSE;
2070: } else if (nr == 0) {
2071: finish = FALSE;
2072: }
1.6 ! millert 2073:
1.1 deraadt 2074: /*
2075: * Look for the last newline in the bytes we just got. If there is
2076: * one, break out of the loop with 'i' as its index and gotNL set
1.6 ! millert 2077: * TRUE.
1.1 deraadt 2078: */
2079: max = job->curPos + nr;
2080: for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
2081: if (job->outBuf[i] == '\n') {
2082: gotNL = TRUE;
2083: break;
2084: } else if (job->outBuf[i] == '\0') {
2085: /*
2086: * Why?
2087: */
2088: job->outBuf[i] = ' ';
2089: }
2090: }
1.6 ! millert 2091:
1.1 deraadt 2092: if (!gotNL) {
2093: job->curPos += nr;
2094: if (job->curPos == JOB_BUFSIZE) {
2095: /*
2096: * If we've run out of buffer space, we have no choice
1.6 ! millert 2097: * but to print the stuff. sigh.
1.1 deraadt 2098: */
1.2 deraadt 2099: fbuf = TRUE;
1.1 deraadt 2100: i = job->curPos;
2101: }
2102: }
1.2 deraadt 2103: if (gotNL || fbuf) {
1.1 deraadt 2104: /*
2105: * Need to send the output to the screen. Null terminate it
2106: * first, overwriting the newline character if there was one.
1.6 ! millert 2107: * So long as the line isn't one we should filter (according
1.1 deraadt 2108: * to the shell description), we print the line, preceeded
2109: * by a target banner if this target isn't the same as the
2110: * one for which we last printed something.
2111: * The rest of the data in the buffer are then shifted down
1.6 ! millert 2112: * to the start of the buffer and curPos is set accordingly.
1.1 deraadt 2113: */
2114: job->outBuf[i] = '\0';
2115: if (i >= job->curPos) {
1.2 deraadt 2116: char *cp;
1.6 ! millert 2117:
! 2118: cp = JobOutput(job, job->outBuf, &job->outBuf[i], FALSE);
1.1 deraadt 2119:
2120: /*
2121: * There's still more in that thar buffer. This time, though,
2122: * we know there's no newline at the end, so we add one of
2123: * our own free will.
2124: */
2125: if (*cp != '\0') {
2126: if (job->node != lastNode) {
1.2 deraadt 2127: MESSAGE(stdout, job->node);
1.1 deraadt 2128: lastNode = job->node;
2129: }
1.2 deraadt 2130: (void) fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
2131: (void) fflush(stdout);
1.1 deraadt 2132: }
2133: }
2134: if (i < max - 1) {
2135: /* shift the remaining characters down */
1.6 ! millert 2136: (void) memcpy(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
! 2137: job->curPos = max - (i + 1);
! 2138:
1.1 deraadt 2139: } else {
2140: /*
2141: * We have written everything out, so we just start over
2142: * from the start of the buffer. No copying. No nothing.
2143: */
2144: job->curPos = 0;
2145: }
2146: }
2147: if (finish) {
2148: /*
2149: * If the finish flag is true, we must loop until we hit
1.6 ! millert 2150: * end-of-file on the pipe. This is guaranteed to happen
! 2151: * eventually since the other end of the pipe is now closed
! 2152: * (we closed it explicitly and the child has exited). When
! 2153: * we do get an EOF, finish will be set FALSE and we'll fall
! 2154: * through and out.
1.1 deraadt 2155: */
2156: goto end_loop;
2157: }
2158: } else {
2159: /*
2160: * We've been called to retrieve the output of the job from the
2161: * temporary file where it's been squirreled away. This consists of
2162: * opening the file, reading the output line by line, being sure not
2163: * to print the noPrint line for the shell we used, then close and
2164: * remove the temporary file. Very simple.
2165: *
2166: * Change to read in blocks and do FindSubString type things as for
2167: * pipes? That would allow for "@echo -n..."
2168: */
1.2 deraadt 2169: oFILE = fopen(job->outFile, "r");
2170: if (oFILE != NULL) {
2171: (void) fprintf(stdout, "Results of making %s:\n", job->node->name);
2172: (void) fflush(stdout);
2173: while (fgets(inLine, sizeof(inLine), oFILE) != NULL) {
2174: register char *cp, *endp, *oendp;
1.1 deraadt 2175:
2176: cp = inLine;
1.2 deraadt 2177: oendp = endp = inLine + strlen(inLine);
1.1 deraadt 2178: if (endp[-1] == '\n') {
2179: *--endp = '\0';
2180: }
1.2 deraadt 2181: cp = JobOutput(job, inLine, endp, FALSE);
1.1 deraadt 2182:
2183: /*
2184: * There's still more in that thar buffer. This time, though,
2185: * we know there's no newline at the end, so we add one of
2186: * our own free will.
2187: */
1.2 deraadt 2188: (void) fprintf(stdout, "%s", cp);
2189: (void) fflush(stdout);
2190: if (endp != oendp) {
2191: (void) fprintf(stdout, "\n");
2192: (void) fflush(stdout);
1.1 deraadt 2193: }
2194: }
1.2 deraadt 2195: (void) fclose(oFILE);
2196: (void) eunlink(job->outFile);
1.1 deraadt 2197: }
2198: }
2199: }
2200:
2201: /*-
2202: *-----------------------------------------------------------------------
2203: * Job_CatchChildren --
2204: * Handle the exit of a child. Called from Make_Make.
2205: *
2206: * Results:
2207: * none.
2208: *
2209: * Side Effects:
2210: * The job descriptor is removed from the list of children.
2211: *
2212: * Notes:
2213: * We do waits, blocking or not, according to the wisdom of our
2214: * caller, until there are no more children to report. For each
2215: * job, call JobFinish to finish things off. This will take care of
2216: * putting jobs on the stoppedJobs queue.
2217: *
2218: *-----------------------------------------------------------------------
2219: */
2220: void
1.2 deraadt 2221: Job_CatchChildren(block)
1.1 deraadt 2222: Boolean block; /* TRUE if should block on the wait. */
2223: {
2224: int pid; /* pid of dead child */
2225: register Job *job; /* job descriptor for dead child */
2226: LstNode jnode; /* list element for finding job */
1.2 deraadt 2227: int status; /* Exit/termination status */
1.1 deraadt 2228:
2229: /*
2230: * Don't even bother if we know there's no one around.
2231: */
2232: if (nLocal == 0) {
2233: return;
2234: }
1.6 ! millert 2235:
1.2 deraadt 2236: while ((pid = waitpid((pid_t) -1, &status,
2237: (block?0:WNOHANG)|WUNTRACED)) > 0)
1.1 deraadt 2238: {
1.2 deraadt 2239: if (DEBUG(JOB)) {
2240: (void) fprintf(stdout, "Process %d exited or stopped.\n", pid);
2241: (void) fflush(stdout);
2242: }
1.6 ! millert 2243:
1.1 deraadt 2244:
1.2 deraadt 2245: jnode = Lst_Find(jobs, (ClientData)&pid, JobCmpPid);
1.1 deraadt 2246:
2247: if (jnode == NILLNODE) {
1.2 deraadt 2248: if (WIFSIGNALED(status) && (WTERMSIG(status) == SIGCONT)) {
1.1 deraadt 2249: jnode = Lst_Find(stoppedJobs, (ClientData) &pid, JobCmpPid);
2250: if (jnode == NILLNODE) {
1.6 ! millert 2251: Error("Resumed child (%d) not in table", pid);
1.1 deraadt 2252: continue;
2253: }
2254: job = (Job *)Lst_Datum(jnode);
1.2 deraadt 2255: (void) Lst_Remove(stoppedJobs, jnode);
1.1 deraadt 2256: } else {
1.6 ! millert 2257: Error("Child (%d) not in table?", pid);
1.1 deraadt 2258: continue;
2259: }
2260: } else {
1.2 deraadt 2261: job = (Job *) Lst_Datum(jnode);
2262: (void) Lst_Remove(jobs, jnode);
1.1 deraadt 2263: nJobs -= 1;
2264: if (jobFull && DEBUG(JOB)) {
1.2 deraadt 2265: (void) fprintf(stdout, "Job queue is no longer full.\n");
2266: (void) fflush(stdout);
1.1 deraadt 2267: }
2268: jobFull = FALSE;
1.2 deraadt 2269: #ifdef REMOTE
2270: if (!(job->flags & JOB_REMOTE)) {
2271: if (DEBUG(JOB)) {
2272: (void) fprintf(stdout,
2273: "Job queue has one fewer local process.\n");
2274: (void) fflush(stdout);
2275: }
2276: nLocal -= 1;
2277: }
2278: #else
1.1 deraadt 2279: nLocal -= 1;
1.2 deraadt 2280: #endif
1.1 deraadt 2281: }
2282:
1.2 deraadt 2283: JobFinish(job, &status);
1.1 deraadt 2284: }
2285: }
2286:
2287: /*-
2288: *-----------------------------------------------------------------------
2289: * Job_CatchOutput --
2290: * Catch the output from our children, if we're using
2291: * pipes do so. Otherwise just block time until we get a
1.6 ! millert 2292: * signal (most likely a SIGCHLD) since there's no point in
1.1 deraadt 2293: * just spinning when there's nothing to do and the reaping
1.6 ! millert 2294: * of a child can wait for a while.
1.1 deraadt 2295: *
2296: * Results:
1.6 ! millert 2297: * None
1.1 deraadt 2298: *
2299: * Side Effects:
2300: * Output is read from pipes if we're piping.
2301: * -----------------------------------------------------------------------
2302: */
2303: void
1.2 deraadt 2304: Job_CatchOutput()
1.1 deraadt 2305: {
2306: int nfds;
2307: struct timeval timeout;
2308: fd_set readfds;
2309: register LstNode ln;
2310: register Job *job;
2311: #ifdef RMT_WILL_WATCH
2312: int pnJobs; /* Previous nJobs */
2313: #endif
2314:
1.2 deraadt 2315: (void) fflush(stdout);
1.1 deraadt 2316: #ifdef RMT_WILL_WATCH
2317: pnJobs = nJobs;
2318:
2319: /*
2320: * It is possible for us to be called with nJobs equal to 0. This happens
2321: * if all the jobs finish and a job that is stopped cannot be run
2322: * locally (eg if maxLocal is 0) and cannot be exported. The job will
2323: * be placed back on the stoppedJobs queue, Job_Empty() will return false,
2324: * Make_Run will call us again when there's nothing for which to wait.
2325: * nJobs never changes, so we loop forever. Hence the check. It could
2326: * be argued that we should sleep for a bit so as not to swamp the
2327: * exportation system with requests. Perhaps we should.
2328: *
2329: * NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren
2330: * IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT.
2331: * It may use the variable nLocal to determine if it needs to call
1.6 ! millert 2332: * Job_CatchChildren (if nLocal is 0, there's nothing for which to
1.1 deraadt 2333: * wait...)
2334: */
2335: while (nJobs != 0 && pnJobs == nJobs) {
2336: Rmt_Wait();
2337: }
2338: #else
2339: if (usePipes) {
2340: readfds = outputs;
2341: timeout.tv_sec = SEL_SEC;
2342: timeout.tv_usec = SEL_USEC;
2343:
1.2 deraadt 2344: if ((nfds = select(FD_SETSIZE, &readfds, (fd_set *) 0,
2345: (fd_set *) 0, &timeout)) <= 0)
1.1 deraadt 2346: return;
1.2 deraadt 2347: else {
2348: if (Lst_Open(jobs) == FAILURE) {
2349: Punt("Cannot open job table");
1.1 deraadt 2350: }
1.2 deraadt 2351: while (nfds && (ln = Lst_Next(jobs)) != NILLNODE) {
2352: job = (Job *) Lst_Datum(ln);
1.1 deraadt 2353: if (FD_ISSET(job->inPipe, &readfds)) {
1.2 deraadt 2354: JobDoOutput(job, FALSE);
1.1 deraadt 2355: nfds -= 1;
2356: }
2357: }
1.2 deraadt 2358: Lst_Close(jobs);
1.1 deraadt 2359: }
2360: }
2361: #endif /* RMT_WILL_WATCH */
2362: }
2363:
2364: /*-
2365: *-----------------------------------------------------------------------
2366: * Job_Make --
2367: * Start the creation of a target. Basically a front-end for
2368: * JobStart used by the Make module.
2369: *
2370: * Results:
2371: * None.
2372: *
2373: * Side Effects:
2374: * Another job is started.
2375: *
2376: *-----------------------------------------------------------------------
2377: */
2378: void
1.2 deraadt 2379: Job_Make(gn)
1.1 deraadt 2380: GNode *gn;
2381: {
1.2 deraadt 2382: (void) JobStart(gn, 0, NULL);
1.1 deraadt 2383: }
2384:
2385: /*-
2386: *-----------------------------------------------------------------------
2387: * Job_Init --
2388: * Initialize the process module
2389: *
2390: * Results:
2391: * none
2392: *
2393: * Side Effects:
2394: * lists and counters are initialized
2395: *-----------------------------------------------------------------------
2396: */
2397: void
1.2 deraadt 2398: Job_Init(maxproc, maxlocal)
1.1 deraadt 2399: int maxproc; /* the greatest number of jobs which may be
2400: * running at one time */
2401: int maxlocal; /* the greatest number of local jobs which may
2402: * be running at once. */
2403: {
2404: GNode *begin; /* node for commands to do at the very start */
2405:
1.2 deraadt 2406: (void) sprintf(tfile, "/tmp/make%05d", getpid());
1.1 deraadt 2407:
1.2 deraadt 2408: jobs = Lst_Init(FALSE);
1.1 deraadt 2409: stoppedJobs = Lst_Init(FALSE);
2410: maxJobs = maxproc;
2411: maxLocal = maxlocal;
2412: nJobs = 0;
2413: nLocal = 0;
2414: jobFull = FALSE;
2415:
2416: aborting = 0;
2417: errors = 0;
2418:
2419: lastNode = NILGNODE;
2420:
1.2 deraadt 2421: if (maxJobs == 1
2422: #ifdef REMOTE
2423: || noMessages
2424: #endif
2425: ) {
1.1 deraadt 2426: /*
2427: * If only one job can run at a time, there's no need for a banner,
2428: * no is there?
2429: */
2430: targFmt = "";
2431: } else {
2432: targFmt = TARG_FMT;
2433: }
1.6 ! millert 2434:
1.2 deraadt 2435: if (shellPath == NULL) {
1.1 deraadt 2436: /*
2437: * The user didn't specify a shell to use, so we are using the
2438: * default one... Both the absolute path and the last component
2439: * must be set. The last component is taken from the 'name' field
2440: * of the default shell description pointed-to by commandShell.
2441: * All default shells are located in _PATH_DEFSHELLDIR.
2442: */
2443: shellName = commandShell->name;
1.2 deraadt 2444: shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
1.1 deraadt 2445: }
2446:
1.2 deraadt 2447: if (commandShell->exit == NULL) {
1.1 deraadt 2448: commandShell->exit = "";
2449: }
1.2 deraadt 2450: if (commandShell->echo == NULL) {
1.1 deraadt 2451: commandShell->echo = "";
2452: }
2453:
2454: /*
2455: * Catch the four signals that POSIX specifies if they aren't ignored.
2456: * JobPassSig will take care of calling JobInterrupt if appropriate.
2457: */
1.2 deraadt 2458: if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
2459: (void) signal(SIGINT, JobPassSig);
1.1 deraadt 2460: }
1.2 deraadt 2461: if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
2462: (void) signal(SIGHUP, JobPassSig);
1.1 deraadt 2463: }
1.2 deraadt 2464: if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
2465: (void) signal(SIGQUIT, JobPassSig);
1.1 deraadt 2466: }
1.2 deraadt 2467: if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
2468: (void) signal(SIGTERM, JobPassSig);
1.1 deraadt 2469: }
2470: /*
2471: * There are additional signals that need to be caught and passed if
2472: * either the export system wants to be told directly of signals or if
1.6 ! millert 2473: * we're giving each job its own process group (since then it won't get
1.1 deraadt 2474: * signals from the terminal driver as we own the terminal)
2475: */
2476: #if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
1.2 deraadt 2477: if (signal(SIGTSTP, SIG_IGN) != SIG_IGN) {
2478: (void) signal(SIGTSTP, JobPassSig);
1.1 deraadt 2479: }
1.2 deraadt 2480: if (signal(SIGTTOU, SIG_IGN) != SIG_IGN) {
2481: (void) signal(SIGTTOU, JobPassSig);
1.1 deraadt 2482: }
1.2 deraadt 2483: if (signal(SIGTTIN, SIG_IGN) != SIG_IGN) {
2484: (void) signal(SIGTTIN, JobPassSig);
1.1 deraadt 2485: }
1.2 deraadt 2486: if (signal(SIGWINCH, SIG_IGN) != SIG_IGN) {
2487: (void) signal(SIGWINCH, JobPassSig);
1.1 deraadt 2488: }
2489: #endif
1.6 ! millert 2490:
1.2 deraadt 2491: begin = Targ_FindNode(".BEGIN", TARG_NOCREATE);
1.1 deraadt 2492:
2493: if (begin != NILGNODE) {
1.2 deraadt 2494: JobStart(begin, JOB_SPECIAL, (Job *)0);
1.1 deraadt 2495: while (nJobs) {
2496: Job_CatchOutput();
2497: #ifndef RMT_WILL_WATCH
1.2 deraadt 2498: Job_CatchChildren(!usePipes);
1.1 deraadt 2499: #endif /* RMT_WILL_WATCH */
2500: }
2501: }
1.2 deraadt 2502: postCommands = Targ_FindNode(".END", TARG_CREATE);
1.1 deraadt 2503: }
2504:
2505: /*-
2506: *-----------------------------------------------------------------------
2507: * Job_Full --
2508: * See if the job table is full. It is considered full if it is OR
2509: * if we are in the process of aborting OR if we have
2510: * reached/exceeded our local quota. This prevents any more jobs
2511: * from starting up.
2512: *
2513: * Results:
2514: * TRUE if the job table is full, FALSE otherwise
2515: * Side Effects:
2516: * None.
2517: *-----------------------------------------------------------------------
2518: */
2519: Boolean
1.2 deraadt 2520: Job_Full()
1.1 deraadt 2521: {
1.2 deraadt 2522: return(aborting || jobFull);
1.1 deraadt 2523: }
2524:
2525: /*-
2526: *-----------------------------------------------------------------------
2527: * Job_Empty --
2528: * See if the job table is empty. Because the local concurrency may
2529: * be set to 0, it is possible for the job table to become empty,
2530: * while the list of stoppedJobs remains non-empty. In such a case,
2531: * we want to restart as many jobs as we can.
2532: *
2533: * Results:
2534: * TRUE if it is. FALSE if it ain't.
2535: *
2536: * Side Effects:
2537: * None.
2538: *
2539: * -----------------------------------------------------------------------
2540: */
2541: Boolean
1.2 deraadt 2542: Job_Empty()
1.1 deraadt 2543: {
2544: if (nJobs == 0) {
2545: if (!Lst_IsEmpty(stoppedJobs) && !aborting) {
2546: /*
2547: * The job table is obviously not full if it has no jobs in
2548: * it...Try and restart the stopped jobs.
2549: */
2550: jobFull = FALSE;
1.2 deraadt 2551: JobRestartJobs();
1.1 deraadt 2552: return(FALSE);
2553: } else {
2554: return(TRUE);
2555: }
2556: } else {
2557: return(FALSE);
2558: }
2559: }
2560:
2561: /*-
2562: *-----------------------------------------------------------------------
2563: * JobMatchShell --
2564: * Find a matching shell in 'shells' given its final component.
2565: *
2566: * Results:
2567: * A pointer to the Shell structure.
2568: *
2569: * Side Effects:
2570: * None.
2571: *
2572: *-----------------------------------------------------------------------
2573: */
2574: static Shell *
1.2 deraadt 2575: JobMatchShell(name)
1.1 deraadt 2576: char *name; /* Final component of shell path */
2577: {
2578: register Shell *sh; /* Pointer into shells table */
2579: Shell *match; /* Longest-matching shell */
2580: register char *cp1,
2581: *cp2;
2582: char *eoname;
2583:
1.2 deraadt 2584: eoname = name + strlen(name);
1.1 deraadt 2585:
1.2 deraadt 2586: match = NULL;
1.1 deraadt 2587:
2588: for (sh = shells; sh->name != NULL; sh++) {
1.2 deraadt 2589: for (cp1 = eoname - strlen(sh->name), cp2 = sh->name;
1.1 deraadt 2590: *cp1 != '\0' && *cp1 == *cp2;
2591: cp1++, cp2++) {
2592: continue;
2593: }
2594: if (*cp1 != *cp2) {
2595: continue;
1.2 deraadt 2596: } else if (match == NULL || strlen(match->name) < strlen(sh->name)) {
2597: match = sh;
1.1 deraadt 2598: }
2599: }
1.2 deraadt 2600: return(match == NULL ? sh : match);
1.1 deraadt 2601: }
2602:
2603: /*-
2604: *-----------------------------------------------------------------------
2605: * Job_ParseShell --
2606: * Parse a shell specification and set up commandShell, shellPath
2607: * and shellName appropriately.
2608: *
2609: * Results:
2610: * FAILURE if the specification was incorrect.
2611: *
2612: * Side Effects:
2613: * commandShell points to a Shell structure (either predefined or
2614: * created from the shell spec), shellPath is the full path of the
2615: * shell described by commandShell, while shellName is just the
2616: * final component of shellPath.
2617: *
2618: * Notes:
2619: * A shell specification consists of a .SHELL target, with dependency
2620: * operator, followed by a series of blank-separated words. Double
2621: * quotes can be used to use blanks in words. A backslash escapes
2622: * anything (most notably a double-quote and a space) and
2623: * provides the functionality it does in C. Each word consists of
2624: * keyword and value separated by an equal sign. There should be no
2625: * unnecessary spaces in the word. The keywords are as follows:
2626: * name Name of shell.
2627: * path Location of shell. Overrides "name" if given
2628: * quiet Command to turn off echoing.
2629: * echo Command to turn echoing on
2630: * filter Result of turning off echoing that shouldn't be
2631: * printed.
2632: * echoFlag Flag to turn echoing on at the start
2633: * errFlag Flag to turn error checking on at the start
2634: * hasErrCtl True if shell has error checking control
2635: * check Command to turn on error checking if hasErrCtl
2636: * is TRUE or template of command to echo a command
2637: * for which error checking is off if hasErrCtl is
2638: * FALSE.
2639: * ignore Command to turn off error checking if hasErrCtl
2640: * is TRUE or template of command to execute a
2641: * command so as to ignore any errors it returns if
2642: * hasErrCtl is FALSE.
2643: *
2644: *-----------------------------------------------------------------------
2645: */
2646: ReturnStatus
1.2 deraadt 2647: Job_ParseShell(line)
1.1 deraadt 2648: char *line; /* The shell spec */
2649: {
2650: char **words;
2651: int wordCount;
2652: register char **argv;
2653: register int argc;
2654: char *path;
2655: Shell newShell;
2656: Boolean fullSpec = FALSE;
2657:
1.2 deraadt 2658: while (isspace(*line)) {
1.1 deraadt 2659: line++;
2660: }
1.2 deraadt 2661: words = brk_string(line, &wordCount, TRUE);
1.1 deraadt 2662:
1.2 deraadt 2663: memset((Address)&newShell, 0, sizeof(newShell));
1.6 ! millert 2664:
1.1 deraadt 2665: /*
2666: * Parse the specification by keyword
2667: */
1.2 deraadt 2668: for (path = NULL, argc = wordCount - 1, argv = words + 1;
1.1 deraadt 2669: argc != 0;
2670: argc--, argv++) {
1.2 deraadt 2671: if (strncmp(*argv, "path=", 5) == 0) {
1.1 deraadt 2672: path = &argv[0][5];
1.2 deraadt 2673: } else if (strncmp(*argv, "name=", 5) == 0) {
1.1 deraadt 2674: newShell.name = &argv[0][5];
2675: } else {
1.2 deraadt 2676: if (strncmp(*argv, "quiet=", 6) == 0) {
1.1 deraadt 2677: newShell.echoOff = &argv[0][6];
1.2 deraadt 2678: } else if (strncmp(*argv, "echo=", 5) == 0) {
1.1 deraadt 2679: newShell.echoOn = &argv[0][5];
1.2 deraadt 2680: } else if (strncmp(*argv, "filter=", 7) == 0) {
1.1 deraadt 2681: newShell.noPrint = &argv[0][7];
2682: newShell.noPLen = strlen(newShell.noPrint);
1.2 deraadt 2683: } else if (strncmp(*argv, "echoFlag=", 9) == 0) {
1.1 deraadt 2684: newShell.echo = &argv[0][9];
1.2 deraadt 2685: } else if (strncmp(*argv, "errFlag=", 8) == 0) {
1.1 deraadt 2686: newShell.exit = &argv[0][8];
1.2 deraadt 2687: } else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
1.1 deraadt 2688: char c = argv[0][10];
2689: newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
1.2 deraadt 2690: (c != 'T') && (c != 't'));
2691: } else if (strncmp(*argv, "check=", 6) == 0) {
1.1 deraadt 2692: newShell.errCheck = &argv[0][6];
1.2 deraadt 2693: } else if (strncmp(*argv, "ignore=", 7) == 0) {
1.1 deraadt 2694: newShell.ignErr = &argv[0][7];
2695: } else {
1.2 deraadt 2696: Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
1.1 deraadt 2697: *argv);
1.2 deraadt 2698: return(FAILURE);
1.1 deraadt 2699: }
2700: fullSpec = TRUE;
2701: }
2702: }
2703:
1.2 deraadt 2704: if (path == NULL) {
1.1 deraadt 2705: /*
2706: * If no path was given, the user wants one of the pre-defined shells,
2707: * yes? So we find the one s/he wants with the help of JobMatchShell
2708: * and set things up the right way. shellPath will be set up by
2709: * Job_Init.
2710: */
1.2 deraadt 2711: if (newShell.name == NULL) {
2712: Parse_Error(PARSE_FATAL, "Neither path nor name specified");
2713: return(FAILURE);
1.1 deraadt 2714: } else {
1.2 deraadt 2715: commandShell = JobMatchShell(newShell.name);
1.1 deraadt 2716: shellName = newShell.name;
2717: }
2718: } else {
2719: /*
1.6 ! millert 2720: * The user provided a path. If s/he gave nothing else (fullSpec is
1.1 deraadt 2721: * FALSE), try and find a matching shell in the ones we know of.
2722: * Else we just take the specification at its word and copy it
2723: * to a new location. In either case, we need to record the
2724: * path the user gave for the shell.
2725: */
2726: shellPath = path;
1.2 deraadt 2727: path = strrchr(path, '/');
2728: if (path == NULL) {
1.1 deraadt 2729: path = shellPath;
2730: } else {
2731: path += 1;
2732: }
1.2 deraadt 2733: if (newShell.name != NULL) {
1.1 deraadt 2734: shellName = newShell.name;
2735: } else {
2736: shellName = path;
2737: }
2738: if (!fullSpec) {
1.2 deraadt 2739: commandShell = JobMatchShell(shellName);
1.1 deraadt 2740: } else {
2741: commandShell = (Shell *) emalloc(sizeof(Shell));
2742: *commandShell = newShell;
2743: }
2744: }
2745:
2746: if (commandShell->echoOn && commandShell->echoOff) {
2747: commandShell->hasEchoCtl = TRUE;
2748: }
1.6 ! millert 2749:
1.1 deraadt 2750: if (!commandShell->hasErrCtl) {
1.2 deraadt 2751: if (commandShell->errCheck == NULL) {
1.1 deraadt 2752: commandShell->errCheck = "";
2753: }
1.2 deraadt 2754: if (commandShell->ignErr == NULL) {
1.1 deraadt 2755: commandShell->ignErr = "%s\n";
2756: }
2757: }
1.6 ! millert 2758:
1.1 deraadt 2759: /*
2760: * Do not free up the words themselves, since they might be in use by the
2761: * shell specification...
2762: */
1.2 deraadt 2763: free(words);
1.1 deraadt 2764: return SUCCESS;
2765: }
2766:
2767: /*-
2768: *-----------------------------------------------------------------------
2769: * JobInterrupt --
2770: * Handle the receipt of an interrupt.
2771: *
2772: * Results:
2773: * None
2774: *
2775: * Side Effects:
2776: * All children are killed. Another job will be started if the
2777: * .INTERRUPT target was given.
2778: *-----------------------------------------------------------------------
2779: */
2780: static void
1.2 deraadt 2781: JobInterrupt(runINTERRUPT, signo)
1.1 deraadt 2782: int runINTERRUPT; /* Non-zero if commands for the .INTERRUPT
2783: * target should be executed */
1.2 deraadt 2784: int signo; /* signal received */
1.1 deraadt 2785: {
2786: LstNode ln; /* element in job table */
2787: Job *job; /* job descriptor in that element */
2788: GNode *interrupt; /* the node describing the .INTERRUPT target */
1.6 ! millert 2789:
1.1 deraadt 2790: aborting = ABORT_INTERRUPT;
2791:
1.2 deraadt 2792: (void) Lst_Open(jobs);
2793: while ((ln = Lst_Next(jobs)) != NILLNODE) {
2794: job = (Job *) Lst_Datum(ln);
1.1 deraadt 2795:
1.2 deraadt 2796: if (!Targ_Precious(job->node)) {
2797: char *file = (job->node->path == NULL ?
1.1 deraadt 2798: job->node->name :
2799: job->node->path);
1.2 deraadt 2800: if (!noExecute && eunlink(file) != -1) {
2801: Error("*** %s removed", file);
1.1 deraadt 2802: }
2803: }
2804: #ifdef RMT_WANTS_SIGNALS
2805: if (job->flags & JOB_REMOTE) {
2806: /*
2807: * If job is remote, let the Rmt module do the killing.
2808: */
1.2 deraadt 2809: if (!Rmt_Signal(job, signo)) {
1.1 deraadt 2810: /*
2811: * If couldn't kill the thing, finish it out now with an
2812: * error code, since no exit report will come in likely.
2813: */
1.2 deraadt 2814: int status;
1.1 deraadt 2815:
2816: status.w_status = 0;
2817: status.w_retcode = 1;
1.2 deraadt 2818: JobFinish(job, &status);
1.1 deraadt 2819: }
2820: } else if (job->pid) {
1.2 deraadt 2821: KILL(job->pid, signo);
1.1 deraadt 2822: }
2823: #else
2824: if (job->pid) {
1.2 deraadt 2825: if (DEBUG(JOB)) {
2826: (void) fprintf(stdout,
1.6 ! millert 2827: "JobInterrupt passing signal to child %d.\n",
1.2 deraadt 2828: job->pid);
2829: (void) fflush(stdout);
2830: }
2831: KILL(job->pid, signo);
2832: }
2833: #endif /* RMT_WANTS_SIGNALS */
2834: }
2835:
2836: #ifdef REMOTE
2837: (void)Lst_Open(stoppedJobs);
2838: while ((ln = Lst_Next(stoppedJobs)) != NILLNODE) {
2839: job = (Job *) Lst_Datum(ln);
2840:
2841: if (job->flags & JOB_RESTART) {
2842: if (DEBUG(JOB)) {
2843: (void) fprintf(stdout, "%s%s",
2844: "JobInterrupt skipping job on stopped queue",
2845: "-- it was waiting to be restarted.\n");
2846: (void) fflush(stdout);
2847: }
2848: continue;
2849: }
2850: if (!Targ_Precious(job->node)) {
2851: char *file = (job->node->path == NULL ?
2852: job->node->name :
2853: job->node->path);
2854: if (eunlink(file) == 0) {
2855: Error("*** %s removed", file);
2856: }
2857: }
2858: /*
2859: * Resume the thing so it will take the signal.
2860: */
2861: if (DEBUG(JOB)) {
2862: (void) fprintf(stdout,
1.6 ! millert 2863: "JobInterrupt passing CONT to stopped child %d.\n",
1.2 deraadt 2864: job->pid);
2865: (void) fflush(stdout);
2866: }
2867: KILL(job->pid, SIGCONT);
2868: #ifdef RMT_WANTS_SIGNALS
2869: if (job->flags & JOB_REMOTE) {
2870: /*
2871: * If job is remote, let the Rmt module do the killing.
2872: */
2873: if (!Rmt_Signal(job, SIGINT)) {
2874: /*
2875: * If couldn't kill the thing, finish it out now with an
2876: * error code, since no exit report will come in likely.
2877: */
2878: int status;
2879: status.w_status = 0;
2880: status.w_retcode = 1;
2881: JobFinish(job, &status);
2882: }
2883: } else if (job->pid) {
2884: if (DEBUG(JOB)) {
2885: (void) fprintf(stdout,
2886: "JobInterrupt passing interrupt to stopped child %d.\n",
2887: job->pid);
2888: (void) fflush(stdout);
2889: }
1.1 deraadt 2890: KILL(job->pid, SIGINT);
2891: }
2892: #endif /* RMT_WANTS_SIGNALS */
2893: }
1.2 deraadt 2894: #endif
2895: Lst_Close(stoppedJobs);
1.1 deraadt 2896:
2897: if (runINTERRUPT && !touchFlag) {
1.2 deraadt 2898: interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
1.1 deraadt 2899: if (interrupt != NILGNODE) {
2900: ignoreErrors = FALSE;
2901:
1.2 deraadt 2902: JobStart(interrupt, JOB_IGNDOTS, (Job *)0);
1.1 deraadt 2903: while (nJobs) {
2904: Job_CatchOutput();
2905: #ifndef RMT_WILL_WATCH
1.2 deraadt 2906: Job_CatchChildren(!usePipes);
1.1 deraadt 2907: #endif /* RMT_WILL_WATCH */
2908: }
2909: }
2910: }
1.2 deraadt 2911: (void) eunlink(tfile);
2912: exit(signo);
1.1 deraadt 2913: }
2914:
2915: /*
2916: *-----------------------------------------------------------------------
2917: * Job_End --
2918: * Do final processing such as the running of the commands
1.6 ! millert 2919: * attached to the .END target.
1.1 deraadt 2920: *
2921: * Results:
2922: * Number of errors reported.
2923: *
2924: * Side Effects:
1.6 ! millert 2925: * The process' temporary file (tfile) is removed if it still
1.1 deraadt 2926: * existed.
2927: *-----------------------------------------------------------------------
2928: */
2929: int
1.2 deraadt 2930: Job_End()
1.1 deraadt 2931: {
1.2 deraadt 2932: if (postCommands != NILGNODE && !Lst_IsEmpty(postCommands->commands)) {
1.1 deraadt 2933: if (errors) {
1.2 deraadt 2934: Error("Errors reported so .END ignored");
1.1 deraadt 2935: } else {
1.2 deraadt 2936: JobStart(postCommands, JOB_SPECIAL | JOB_IGNDOTS, NULL);
1.1 deraadt 2937:
2938: while (nJobs) {
2939: Job_CatchOutput();
2940: #ifndef RMT_WILL_WATCH
1.2 deraadt 2941: Job_CatchChildren(!usePipes);
1.1 deraadt 2942: #endif /* RMT_WILL_WATCH */
2943: }
2944: }
2945: }
1.2 deraadt 2946: (void) eunlink(tfile);
1.1 deraadt 2947: return(errors);
2948: }
2949:
2950: /*-
2951: *-----------------------------------------------------------------------
2952: * Job_Wait --
2953: * Waits for all running jobs to finish and returns. Sets 'aborting'
2954: * to ABORT_WAIT to prevent other jobs from starting.
2955: *
2956: * Results:
2957: * None.
2958: *
2959: * Side Effects:
2960: * Currently running jobs finish.
2961: *
2962: *-----------------------------------------------------------------------
2963: */
2964: void
2965: Job_Wait()
2966: {
2967: aborting = ABORT_WAIT;
2968: while (nJobs != 0) {
2969: Job_CatchOutput();
2970: #ifndef RMT_WILL_WATCH
2971: Job_CatchChildren(!usePipes);
2972: #endif /* RMT_WILL_WATCH */
2973: }
2974: aborting = 0;
2975: }
2976:
2977: /*-
2978: *-----------------------------------------------------------------------
2979: * Job_AbortAll --
2980: * Abort all currently running jobs without handling output or anything.
2981: * This function is to be called only in the event of a major
2982: * error. Most definitely NOT to be called from JobInterrupt.
2983: *
2984: * Results:
2985: * None
2986: *
2987: * Side Effects:
2988: * All children are killed, not just the firstborn
2989: *-----------------------------------------------------------------------
2990: */
2991: void
1.2 deraadt 2992: Job_AbortAll()
1.1 deraadt 2993: {
1.2 deraadt 2994: LstNode ln; /* element in job table */
1.1 deraadt 2995: Job *job; /* the job descriptor in that element */
2996: int foo;
1.6 ! millert 2997:
1.1 deraadt 2998: aborting = ABORT_ERROR;
1.6 ! millert 2999:
1.1 deraadt 3000: if (nJobs) {
3001:
1.2 deraadt 3002: (void) Lst_Open(jobs);
3003: while ((ln = Lst_Next(jobs)) != NILLNODE) {
3004: job = (Job *) Lst_Datum(ln);
1.1 deraadt 3005:
3006: /*
3007: * kill the child process with increasingly drastic signals to make
1.6 ! millert 3008: * darn sure it's dead.
1.1 deraadt 3009: */
3010: #ifdef RMT_WANTS_SIGNALS
3011: if (job->flags & JOB_REMOTE) {
3012: Rmt_Signal(job, SIGINT);
3013: Rmt_Signal(job, SIGKILL);
3014: } else {
3015: KILL(job->pid, SIGINT);
3016: KILL(job->pid, SIGKILL);
3017: }
3018: #else
3019: KILL(job->pid, SIGINT);
3020: KILL(job->pid, SIGKILL);
3021: #endif /* RMT_WANTS_SIGNALS */
3022: }
3023: }
1.6 ! millert 3024:
1.1 deraadt 3025: /*
3026: * Catch as many children as want to report in at first, then give up
3027: */
1.2 deraadt 3028: while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
1.1 deraadt 3029: continue;
1.2 deraadt 3030: (void) eunlink(tfile);
3031: }
3032:
3033: #ifdef REMOTE
3034: /*-
3035: *-----------------------------------------------------------------------
3036: * JobFlagForMigration --
3037: * Handle the eviction of a child. Called from RmtStatusChange.
3038: * Flags the child as remigratable and then suspends it.
3039: *
3040: * Results:
3041: * none.
3042: *
3043: * Side Effects:
3044: * The job descriptor is flagged for remigration.
3045: *
3046: *-----------------------------------------------------------------------
3047: */
3048: void
3049: JobFlagForMigration(hostID)
3050: int hostID; /* ID of host we used, for matching children. */
3051: {
3052: register Job *job; /* job descriptor for dead child */
3053: LstNode jnode; /* list element for finding job */
3054:
3055: if (DEBUG(JOB)) {
3056: (void) fprintf(stdout, "JobFlagForMigration(%d) called.\n", hostID);
3057: (void) fflush(stdout);
3058: }
3059: jnode = Lst_Find(jobs, (ClientData)hostID, JobCmpRmtID);
3060:
3061: if (jnode == NILLNODE) {
3062: jnode = Lst_Find(stoppedJobs, (ClientData)hostID, JobCmpRmtID);
3063: if (jnode == NILLNODE) {
3064: if (DEBUG(JOB)) {
3065: Error("Evicting host(%d) not in table", hostID);
3066: }
3067: return;
3068: }
3069: }
3070: job = (Job *) Lst_Datum(jnode);
3071:
3072: if (DEBUG(JOB)) {
3073: (void) fprintf(stdout,
3074: "JobFlagForMigration(%d) found job '%s'.\n", hostID,
3075: job->node->name);
3076: (void) fflush(stdout);
3077: }
3078:
3079: KILL(job->pid, SIGSTOP);
3080:
3081: job->flags |= JOB_REMIGRATE;
3082: }
3083:
3084: #endif
3085:
3086: /*-
3087: *-----------------------------------------------------------------------
3088: * JobRestartJobs --
3089: * Tries to restart stopped jobs if there are slots available.
3090: * Note that this tries to restart them regardless of pending errors.
3091: * It's not good to leave stopped jobs lying around!
3092: *
3093: * Results:
3094: * None.
3095: *
3096: * Side Effects:
3097: * Resumes(and possibly migrates) jobs.
3098: *
3099: *-----------------------------------------------------------------------
3100: */
3101: static void
3102: JobRestartJobs()
3103: {
3104: while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
3105: if (DEBUG(JOB)) {
3106: (void) fprintf(stdout,
3107: "Job queue is not full. Restarting a stopped job.\n");
3108: (void) fflush(stdout);
3109: }
3110: JobRestart((Job *)Lst_DeQueue(stoppedJobs));
3111: }
1.1 deraadt 3112: }
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