Annotation of src/usr.bin/make/job.c, Revision 1.8
1.8 ! deraadt 1: /* $OpenBSD: job.c,v 1.7 1997/06/15 21:29:22 millert Exp $ */
1.6 millert 2: /* $NetBSD: job.c,v 1.16 1996/11/06 17:59:08 christos Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
6: * Copyright (c) 1988, 1989 by Adam de Boor
7: * Copyright (c) 1989 by Berkeley Softworks
8: * All rights reserved.
9: *
10: * This code is derived from software contributed to Berkeley by
11: * Adam de Boor.
12: *
13: * Redistribution and use in source and binary forms, with or without
14: * modification, are permitted provided that the following conditions
15: * are met:
16: * 1. Redistributions of source code must retain the above copyright
17: * notice, this list of conditions and the following disclaimer.
18: * 2. Redistributions in binary form must reproduce the above copyright
19: * notice, this list of conditions and the following disclaimer in the
20: * documentation and/or other materials provided with the distribution.
21: * 3. All advertising materials mentioning features or use of this software
22: * must display the following acknowledgement:
23: * This product includes software developed by the University of
24: * California, Berkeley and its contributors.
25: * 4. Neither the name of the University nor the names of its contributors
26: * may be used to endorse or promote products derived from this software
27: * without specific prior written permission.
28: *
29: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39: * SUCH DAMAGE.
40: */
41:
42: #ifndef lint
43: #if 0
1.6 millert 44: static char sccsid[] = "@(#)job.c 8.2 (Berkeley) 3/19/94";
1.1 deraadt 45: #else
1.8 ! deraadt 46: static char rcsid[] = "$OpenBSD: job.c,v 1.7 1997/06/15 21:29:22 millert Exp $";
1.1 deraadt 47: #endif
48: #endif /* not lint */
49:
50: /*-
51: * job.c --
52: * handle the creation etc. of our child processes.
53: *
54: * Interface:
55: * Job_Make Start the creation of the given target.
56: *
57: * Job_CatchChildren Check for and handle the termination of any
58: * children. This must be called reasonably
59: * frequently to keep the whole make going at
60: * a decent clip, since job table entries aren't
61: * removed until their process is caught this way.
62: * Its single argument is TRUE if the function
63: * should block waiting for a child to terminate.
64: *
65: * Job_CatchOutput Print any output our children have produced.
66: * Should also be called fairly frequently to
67: * keep the user informed of what's going on.
68: * If no output is waiting, it will block for
69: * a time given by the SEL_* constants, below,
70: * or until output is ready.
71: *
72: * Job_Init Called to intialize this module. in addition,
73: * any commands attached to the .BEGIN target
74: * are executed before this function returns.
75: * Hence, the makefile must have been parsed
76: * before this function is called.
77: *
78: * Job_Full Return TRUE if the job table is filled.
79: *
80: * Job_Empty Return TRUE if the job table is completely
81: * empty.
82: *
83: * Job_ParseShell Given the line following a .SHELL target, parse
84: * the line as a shell specification. Returns
85: * FAILURE if the spec was incorrect.
86: *
87: * Job_End Perform any final processing which needs doing.
88: * This includes the execution of any commands
89: * which have been/were attached to the .END
90: * target. It should only be called when the
91: * job table is empty.
92: *
93: * Job_AbortAll Abort all currently running jobs. It doesn't
94: * handle output or do anything for the jobs,
95: * just kills them. It should only be called in
96: * an emergency, as it were.
97: *
98: * Job_CheckCommands Verify that the commands for a target are
99: * ok. Provide them if necessary and possible.
100: *
101: * Job_Touch Update a target without really updating it.
102: *
103: * Job_Wait Wait for all currently-running jobs to finish.
104: */
105:
106: #include <sys/types.h>
107: #include <sys/stat.h>
108: #include <sys/file.h>
109: #include <sys/time.h>
110: #include <sys/wait.h>
111: #include <fcntl.h>
112: #include <errno.h>
1.3 niklas 113: #include <utime.h>
1.1 deraadt 114: #include <stdio.h>
115: #include <string.h>
116: #include <signal.h>
117: #include "make.h"
118: #include "hash.h"
119: #include "dir.h"
120: #include "job.h"
121: #include "pathnames.h"
1.2 deraadt 122: #ifdef REMOTE
123: #include "rmt.h"
1.6 millert 124: # define STATIC
1.2 deraadt 125: #else
126: # define STATIC static
127: #endif
1.1 deraadt 128:
129: extern int errno;
130:
131: /*
1.6 millert 132: * error handling variables
1.1 deraadt 133: */
134: static int errors = 0; /* number of errors reported */
135: static int aborting = 0; /* why is the make aborting? */
136: #define ABORT_ERROR 1 /* Because of an error */
137: #define ABORT_INTERRUPT 2 /* Because it was interrupted */
138: #define ABORT_WAIT 3 /* Waiting for jobs to finish */
139:
1.6 millert 140: /*
1.2 deraadt 141: * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
142: * is a char! So when we go above 127 we turn negative!
143: */
144: #define FILENO(a) ((unsigned) fileno(a))
1.1 deraadt 145:
146: /*
147: * post-make command processing. The node postCommands is really just the
148: * .END target but we keep it around to avoid having to search for it
149: * all the time.
150: */
151: static GNode *postCommands; /* node containing commands to execute when
152: * everything else is done */
153: static int numCommands; /* The number of commands actually printed
154: * for a target. Should this number be
155: * 0, no shell will be executed. */
156:
157: /*
158: * Return values from JobStart.
159: */
160: #define JOB_RUNNING 0 /* Job is running */
161: #define JOB_ERROR 1 /* Error in starting the job */
162: #define JOB_FINISHED 2 /* The job is already finished */
163: #define JOB_STOPPED 3 /* The job is stopped */
164:
165: /*
166: * tfile is the name of a file into which all shell commands are put. It is
1.7 millert 167: * used over by removing it before the child shell is executed. The XXXXXXXXXX
168: * in the string are replaced by mkstemp(3).
1.1 deraadt 169: */
1.7 millert 170: static char tfile[sizeof(TMPPAT)];
1.1 deraadt 171:
172:
173: /*
174: * Descriptions for various shells.
175: */
176: static Shell shells[] = {
177: /*
178: * CSH description. The csh can do echo control by playing
179: * with the setting of the 'echo' shell variable. Sadly,
180: * however, it is unable to do error control nicely.
181: */
182: {
183: "csh",
184: TRUE, "unset verbose", "set verbose", "unset verbose", 10,
185: FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"",
186: "v", "e",
187: },
188: /*
189: * SH description. Echo control is also possible and, under
190: * sun UNIX anyway, one can even control error checking.
191: */
192: {
193: "sh",
194: TRUE, "set -", "set -v", "set -", 5,
1.2 deraadt 195: TRUE, "set -e", "set +e",
196: #ifdef OLDBOURNESHELL
1.1 deraadt 197: FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
1.2 deraadt 198: #endif
1.1 deraadt 199: "v", "e",
200: },
201: /*
202: * UNKNOWN.
203: */
204: {
1.2 deraadt 205: (char *) 0,
206: FALSE, (char *) 0, (char *) 0, (char *) 0, 0,
207: FALSE, (char *) 0, (char *) 0,
208: (char *) 0, (char *) 0,
1.1 deraadt 209: }
210: };
211: static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
212: * which we pass all
213: * commands in the Makefile.
214: * It is set by the
215: * Job_ParseShell function */
1.2 deraadt 216: static char *shellPath = NULL, /* full pathname of
1.1 deraadt 217: * executable image */
218: *shellName; /* last component of shell */
219:
220:
221: static int maxJobs; /* The most children we can run at once */
222: static int maxLocal; /* The most local ones we can have */
1.2 deraadt 223: STATIC int nJobs; /* The number of children currently running */
224: STATIC int nLocal; /* The number of local children */
225: STATIC Lst jobs; /* The structures that describe them */
226: STATIC Boolean jobFull; /* Flag to tell when the job table is full. It
1.1 deraadt 227: * is set TRUE when (1) the total number of
228: * running jobs equals the maximum allowed or
229: * (2) a job can only be run locally, but
230: * nLocal equals maxLocal */
231: #ifndef RMT_WILL_WATCH
1.8 ! deraadt 232: static fd_set *outputsp; /* Set of descriptors of pipes connected to
1.1 deraadt 233: * the output channels of children */
1.8 ! deraadt 234: static int outputsn;
1.1 deraadt 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
1.8 ! deraadt 704: FD_CLR(job->inPipe, outputsp);
1.2 deraadt 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
1.8 ! deraadt 1282: int omask = sigblock(sigmask(SIGCHLD));
1.2 deraadt 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
1.8 ! deraadt 1297: if (outputsp == NULL || job->inPipe > outputsn) {
! 1298: int bytes = howmany(job->inPipe+1, NFDBITS) * sizeof(fd_mask);
! 1299: int obytes = howmany(outputsn+1, NFDBITS) * sizeof(fd_mask);
! 1300:
! 1301: if (obytes != bytes) {
! 1302: outputsp = realloc(outputsp, bytes);
! 1303: if (outputsp == NULL)
! 1304: return;
! 1305: memset(outputsp + obytes, 0, bytes - obytes);
! 1306: }
! 1307: outputsn = job->inPipe;
! 1308: }
! 1309: FD_SET(job->inPipe, outputsp);
1.1 deraadt 1310: #endif /* RMT_WILL_WATCH */
1311: }
1312:
1313: if (job->flags & JOB_REMOTE) {
1.2 deraadt 1314: #ifndef REMOTE
1.1 deraadt 1315: job->rmtID = 0;
1.2 deraadt 1316: #else
1317: job->rmtID = Rmt_LastID(job->pid);
1318: #endif /* REMOTE */
1.1 deraadt 1319: } else {
1320: nLocal += 1;
1321: /*
1.2 deraadt 1322: * XXX: Used to not happen if REMOTE. Why?
1.1 deraadt 1323: */
1.2 deraadt 1324: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1325: (void) fclose(job->cmdFILE);
1.1 deraadt 1326: job->cmdFILE = NULL;
1327: }
1328: }
1.2 deraadt 1329: #ifdef REMOTE
1330: (void) sigsetmask(omask);
1331: #endif
1.1 deraadt 1332: }
1333:
1334: #ifdef RMT_NO_EXEC
1.6 millert 1335: jobExecFinish:
1.1 deraadt 1336: #endif
1337: /*
1338: * Now the job is actually running, add it to the table.
1339: */
1340: nJobs += 1;
1.2 deraadt 1341: (void) Lst_AtEnd(jobs, (ClientData)job);
1.1 deraadt 1342: if (nJobs == maxJobs) {
1343: jobFull = TRUE;
1344: }
1345: }
1346:
1347: /*-
1348: *-----------------------------------------------------------------------
1349: * JobMakeArgv --
1350: * Create the argv needed to execute the shell for a given job.
1.6 millert 1351: *
1.1 deraadt 1352: *
1353: * Results:
1354: *
1355: * Side Effects:
1356: *
1357: *-----------------------------------------------------------------------
1358: */
1359: static void
1360: JobMakeArgv(job, argv)
1361: Job *job;
1362: char **argv;
1363: {
1364: int argc;
1365: static char args[10]; /* For merged arguments */
1.6 millert 1366:
1.1 deraadt 1367: argv[0] = shellName;
1368: argc = 1;
1369:
1370: if ((commandShell->exit && (*commandShell->exit != '-')) ||
1371: (commandShell->echo && (*commandShell->echo != '-')))
1372: {
1373: /*
1374: * At least one of the flags doesn't have a minus before it, so
1375: * merge them together. Have to do this because the *(&(@*#*&#$#
1376: * Bourne shell thinks its second argument is a file to source.
1377: * Grrrr. Note the ten-character limitation on the combined arguments.
1378: */
1379: (void)sprintf(args, "-%s%s",
1380: ((job->flags & JOB_IGNERR) ? "" :
1381: (commandShell->exit ? commandShell->exit : "")),
1382: ((job->flags & JOB_SILENT) ? "" :
1383: (commandShell->echo ? commandShell->echo : "")));
1384:
1385: if (args[1]) {
1386: argv[argc] = args;
1387: argc++;
1388: }
1389: } else {
1390: if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
1391: argv[argc] = commandShell->exit;
1392: argc++;
1393: }
1394: if (!(job->flags & JOB_SILENT) && commandShell->echo) {
1395: argv[argc] = commandShell->echo;
1396: argc++;
1397: }
1398: }
1.2 deraadt 1399: argv[argc] = NULL;
1.1 deraadt 1400: }
1401:
1402: /*-
1403: *-----------------------------------------------------------------------
1404: * JobRestart --
1.6 millert 1405: * Restart a job that stopped for some reason.
1.1 deraadt 1406: *
1407: * Results:
1408: * None.
1409: *
1410: * Side Effects:
1411: * jobFull will be set if the job couldn't be run.
1412: *
1413: *-----------------------------------------------------------------------
1414: */
1415: static void
1416: JobRestart(job)
1417: Job *job; /* Job to restart */
1418: {
1.2 deraadt 1419: #ifdef REMOTE
1420: int host;
1421: #endif
1.6 millert 1422:
1.1 deraadt 1423: if (job->flags & JOB_REMIGRATE) {
1.2 deraadt 1424: if (
1425: #ifdef REMOTE
1426: verboseRemigrates ||
1427: #endif
1428: DEBUG(JOB)) {
1429: (void) fprintf(stdout, "*** remigrating %x(%s)\n",
1430: job->pid, job->node->name);
1431: (void) fflush(stdout);
1.1 deraadt 1432: }
1.2 deraadt 1433:
1434: #ifdef REMOTE
1435: if (!Rmt_ReExport(job->pid, job->node, &host)) {
1436: if (verboseRemigrates || DEBUG(JOB)) {
1437: (void) fprintf(stdout, "*** couldn't migrate...\n");
1438: (void) fflush(stdout);
1439: }
1440: #endif
1441: if (nLocal != maxLocal) {
1.1 deraadt 1442: /*
1443: * Job cannot be remigrated, but there's room on the local
1444: * machine, so resume the job and note that another
1445: * local job has started.
1446: */
1.2 deraadt 1447: if (
1448: #ifdef REMOTE
1449: verboseRemigrates ||
1450: #endif
1451: DEBUG(JOB)) {
1452: (void) fprintf(stdout, "*** resuming on local machine\n");
1453: (void) fflush(stdout);
1454: }
1.1 deraadt 1455: KILL(job->pid, SIGCONT);
1456: nLocal +=1;
1.2 deraadt 1457: #ifdef REMOTE
1458: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME|JOB_REMOTE);
1459: job->flags |= JOB_CONTINUING;
1460: #else
1.1 deraadt 1461: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1.2 deraadt 1462: #endif
1.1 deraadt 1463: } else {
1464: /*
1465: * Job cannot be restarted. Mark the table as full and
1466: * place the job back on the list of stopped jobs.
1467: */
1.2 deraadt 1468: if (
1469: #ifdef REMOTE
1470: verboseRemigrates ||
1471: #endif
1472: DEBUG(JOB)) {
1473: (void) fprintf(stdout, "*** holding\n");
1474: (void) fflush(stdout);
1475: }
1.1 deraadt 1476: (void)Lst_AtFront(stoppedJobs, (ClientData)job);
1477: jobFull = TRUE;
1478: if (DEBUG(JOB)) {
1.2 deraadt 1479: (void) fprintf(stdout, "Job queue is full.\n");
1480: (void) fflush(stdout);
1.1 deraadt 1481: }
1482: return;
1.2 deraadt 1483: }
1484: #ifdef REMOTE
1485: } else {
1486: /*
1487: * Clear out the remigrate and resume flags. Set the continuing
1488: * flag so we know later on that the process isn't exiting just
1489: * because of a signal.
1490: */
1491: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1492: job->flags |= JOB_CONTINUING;
1493: job->rmtID = host;
1.1 deraadt 1494: }
1.2 deraadt 1495: #endif
1.6 millert 1496:
1.1 deraadt 1497: (void)Lst_AtEnd(jobs, (ClientData)job);
1498: nJobs += 1;
1499: if (nJobs == maxJobs) {
1500: jobFull = TRUE;
1501: if (DEBUG(JOB)) {
1.2 deraadt 1502: (void) fprintf(stdout, "Job queue is full.\n");
1503: (void) fflush(stdout);
1.1 deraadt 1504: }
1505: }
1506: } else if (job->flags & JOB_RESTART) {
1507: /*
1508: * Set up the control arguments to the shell. This is based on the
1509: * flags set earlier for this job. If the JOB_IGNERR flag is clear,
1510: * the 'exit' flag of the commandShell is used to cause it to exit
1511: * upon receiving an error. If the JOB_SILENT flag is clear, the
1512: * 'echo' flag of the commandShell is used to get it to start echoing
1.6 millert 1513: * as soon as it starts processing commands.
1.1 deraadt 1514: */
1515: char *argv[4];
1.6 millert 1516:
1.1 deraadt 1517: JobMakeArgv(job, argv);
1.2 deraadt 1518:
1.1 deraadt 1519: if (DEBUG(JOB)) {
1.2 deraadt 1520: (void) fprintf(stdout, "Restarting %s...", job->node->name);
1521: (void) fflush(stdout);
1.1 deraadt 1522: }
1.2 deraadt 1523: #ifdef REMOTE
1524: if ((job->node->type&OP_NOEXPORT) ||
1.6 millert 1525: (nLocal < maxLocal && runLocalFirst)
1.2 deraadt 1526: # ifdef RMT_NO_EXEC
1527: || !Rmt_Export(shellPath, argv, job)
1528: # else
1529: || !Rmt_Begin(shellPath, argv, job->node)
1530: # endif
1531: #endif
1532: {
1533: if (((nLocal >= maxLocal) && !(job->flags & JOB_SPECIAL))) {
1.1 deraadt 1534: /*
1535: * Can't be exported and not allowed to run locally -- put it
1536: * back on the hold queue and mark the table full
1537: */
1538: if (DEBUG(JOB)) {
1.2 deraadt 1539: (void) fprintf(stdout, "holding\n");
1540: (void) fflush(stdout);
1.1 deraadt 1541: }
1542: (void)Lst_AtFront(stoppedJobs, (ClientData)job);
1543: jobFull = TRUE;
1544: if (DEBUG(JOB)) {
1.2 deraadt 1545: (void) fprintf(stdout, "Job queue is full.\n");
1546: (void) fflush(stdout);
1.1 deraadt 1547: }
1548: return;
1.2 deraadt 1549: } else {
1.1 deraadt 1550: /*
1551: * Job may be run locally.
1552: */
1553: if (DEBUG(JOB)) {
1.2 deraadt 1554: (void) fprintf(stdout, "running locally\n");
1555: (void) fflush(stdout);
1.1 deraadt 1556: }
1557: job->flags &= ~JOB_REMOTE;
1.2 deraadt 1558: }
1559: }
1560: #ifdef REMOTE
1561: else {
1562: /*
1563: * Can be exported. Hooray!
1564: */
1565: if (DEBUG(JOB)) {
1566: (void) fprintf(stdout, "exporting\n");
1567: (void) fflush(stdout);
1568: }
1569: job->flags |= JOB_REMOTE;
1.1 deraadt 1570: }
1.2 deraadt 1571: #endif
1.1 deraadt 1572: JobExec(job, argv);
1573: } else {
1574: /*
1575: * The job has stopped and needs to be restarted. Why it stopped,
1576: * we don't know...
1577: */
1578: if (DEBUG(JOB)) {
1.2 deraadt 1579: (void) fprintf(stdout, "Resuming %s...", job->node->name);
1580: (void) fflush(stdout);
1.1 deraadt 1581: }
1582: if (((job->flags & JOB_REMOTE) ||
1.2 deraadt 1583: (nLocal < maxLocal) ||
1584: #ifdef REMOTE
1585: (((job->flags & JOB_SPECIAL) &&
1586: (job->node->type & OP_NOEXPORT)) &&
1587: (maxLocal == 0))) &&
1588: #else
1589: ((job->flags & JOB_SPECIAL) &&
1590: (maxLocal == 0))) &&
1591: #endif
1592: (nJobs != maxJobs))
1.1 deraadt 1593: {
1594: /*
1595: * If the job is remote, it's ok to resume it as long as the
1596: * maximum concurrency won't be exceeded. If it's local and
1.6 millert 1597: * we haven't reached the local concurrency limit already (or the
1.1 deraadt 1598: * job must be run locally and maxLocal is 0), it's also ok to
1599: * resume it.
1600: */
1601: Boolean error;
1602: extern int errno;
1.2 deraadt 1603: int status;
1.6 millert 1604:
1.1 deraadt 1605: #ifdef RMT_WANTS_SIGNALS
1606: if (job->flags & JOB_REMOTE) {
1607: error = !Rmt_Signal(job, SIGCONT);
1608: } else
1609: #endif /* RMT_WANTS_SIGNALS */
1610: error = (KILL(job->pid, SIGCONT) != 0);
1611:
1612: if (!error) {
1613: /*
1614: * Make sure the user knows we've continued the beast and
1615: * actually put the thing in the job table.
1616: */
1617: job->flags |= JOB_CONTINUING;
1.2 deraadt 1618: W_SETTERMSIG(&status, SIGCONT);
1619: JobFinish(job, &status);
1.6 millert 1620:
1.1 deraadt 1621: job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
1622: if (DEBUG(JOB)) {
1.2 deraadt 1623: (void) fprintf(stdout, "done\n");
1624: (void) fflush(stdout);
1.1 deraadt 1625: }
1626: } else {
1627: Error("couldn't resume %s: %s",
1628: job->node->name, strerror(errno));
1.2 deraadt 1629: status = 0;
1630: W_SETEXITSTATUS(&status, 1);
1631: JobFinish(job, &status);
1.1 deraadt 1632: }
1633: } else {
1634: /*
1635: * Job cannot be restarted. Mark the table as full and
1636: * place the job back on the list of stopped jobs.
1637: */
1638: if (DEBUG(JOB)) {
1.2 deraadt 1639: (void) fprintf(stdout, "table full\n");
1640: (void) fflush(stdout);
1.1 deraadt 1641: }
1.2 deraadt 1642: (void) Lst_AtFront(stoppedJobs, (ClientData)job);
1.1 deraadt 1643: jobFull = TRUE;
1644: if (DEBUG(JOB)) {
1.2 deraadt 1645: (void) fprintf(stdout, "Job queue is full.\n");
1646: (void) fflush(stdout);
1.1 deraadt 1647: }
1648: }
1649: }
1650: }
1651:
1652: /*-
1653: *-----------------------------------------------------------------------
1654: * JobStart --
1655: * Start a target-creation process going for the target described
1.6 millert 1656: * by the graph node gn.
1.1 deraadt 1657: *
1658: * Results:
1659: * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1660: * if there isn't actually anything left to do for the job and
1661: * JOB_RUNNING if the job has been started.
1662: *
1663: * Side Effects:
1664: * A new Job node is created and added to the list of running
1665: * jobs. PMake is forked and a child shell created.
1666: *-----------------------------------------------------------------------
1667: */
1668: static int
1.2 deraadt 1669: JobStart(gn, flags, previous)
1.1 deraadt 1670: GNode *gn; /* target to create */
1671: int flags; /* flags for the job to override normal ones.
1672: * e.g. JOB_SPECIAL or JOB_IGNDOTS */
1673: Job *previous; /* The previous Job structure for this node,
1674: * if any. */
1675: {
1676: register Job *job; /* new job descriptor */
1677: char *argv[4]; /* Argument vector to shell */
1678: Boolean cmdsOK; /* true if the nodes commands were all right */
1679: Boolean local; /* Set true if the job was run locally */
1680: Boolean noExec; /* Set true if we decide not to run the job */
1681:
1.2 deraadt 1682: if (previous != NULL) {
1683: previous->flags &= ~(JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
1.1 deraadt 1684: job = previous;
1685: } else {
1.2 deraadt 1686: job = (Job *) emalloc(sizeof(Job));
1687: if (job == NULL) {
1.1 deraadt 1688: Punt("JobStart out of memory");
1689: }
1690: flags |= JOB_FIRST;
1691: }
1692:
1693: job->node = gn;
1694: job->tailCmds = NILLNODE;
1695:
1696: /*
1697: * Set the initial value of the flags for this job based on the global
1698: * ones and the node's attributes... Any flags supplied by the caller
1699: * are also added to the field.
1700: */
1701: job->flags = 0;
1.2 deraadt 1702: if (Targ_Ignore(gn)) {
1.1 deraadt 1703: job->flags |= JOB_IGNERR;
1704: }
1.2 deraadt 1705: if (Targ_Silent(gn)) {
1.1 deraadt 1706: job->flags |= JOB_SILENT;
1707: }
1708: job->flags |= flags;
1709:
1710: /*
1711: * Check the commands now so any attributes from .DEFAULT have a chance
1712: * to migrate to the node
1713: */
1.2 deraadt 1714: if (!compatMake && job->flags & JOB_FIRST) {
1.1 deraadt 1715: cmdsOK = Job_CheckCommands(gn, Error);
1716: } else {
1717: cmdsOK = TRUE;
1718: }
1.6 millert 1719:
1.1 deraadt 1720: /*
1.6 millert 1721: * If the -n flag wasn't given, we open up OUR (not the child's)
1.1 deraadt 1722: * temporary file to stuff commands in it. The thing is rd/wr so we don't
1723: * need to reopen it to feed it to the shell. If the -n flag *was* given,
1724: * we just set the file to be stdout. Cute, huh?
1725: */
1726: if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) {
1727: /*
1728: * We're serious here, but if the commands were bogus, we're
1729: * also dead...
1730: */
1731: if (!cmdsOK) {
1732: DieHorribly();
1733: }
1.6 millert 1734:
1.2 deraadt 1735: job->cmdFILE = fopen(tfile, "w+");
1736: if (job->cmdFILE == NULL) {
1737: Punt("Could not open %s", tfile);
1.1 deraadt 1738: }
1.2 deraadt 1739: (void) fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
1.1 deraadt 1740: /*
1741: * Send the commands to the command file, flush all its buffers then
1742: * rewind and remove the thing.
1743: */
1744: noExec = FALSE;
1745:
1746: /*
1747: * used to be backwards; replace when start doing multiple commands
1748: * per shell.
1749: */
1750: if (compatMake) {
1751: /*
1752: * Be compatible: If this is the first time for this node,
1753: * verify its commands are ok and open the commands list for
1754: * sequential access by later invocations of JobStart.
1755: * Once that is done, we take the next command off the list
1756: * and print it to the command file. If the command was an
1757: * ellipsis, note that there's nothing more to execute.
1758: */
1759: if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){
1760: cmdsOK = FALSE;
1761: } else {
1.2 deraadt 1762: LstNode ln = Lst_Next(gn->commands);
1.6 millert 1763:
1.1 deraadt 1764: if ((ln == NILLNODE) ||
1.2 deraadt 1765: JobPrintCommand((ClientData) Lst_Datum(ln),
1766: (ClientData) job))
1.1 deraadt 1767: {
1768: noExec = TRUE;
1.2 deraadt 1769: Lst_Close(gn->commands);
1.1 deraadt 1770: }
1771: if (noExec && !(job->flags & JOB_FIRST)) {
1772: /*
1773: * If we're not going to execute anything, the job
1774: * is done and we need to close down the various
1775: * file descriptors we've opened for output, then
1776: * call JobDoOutput to catch the final characters or
1777: * send the file to the screen... Note that the i/o streams
1778: * are only open if this isn't the first job.
1779: * Note also that this could not be done in
1780: * Job_CatchChildren b/c it wasn't clear if there were
1781: * more commands to execute or not...
1782: */
1.2 deraadt 1783: JobClose(job);
1.1 deraadt 1784: }
1785: }
1786: } else {
1787: /*
1788: * We can do all the commands at once. hooray for sanity
1789: */
1790: numCommands = 0;
1.2 deraadt 1791: Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
1.6 millert 1792:
1.1 deraadt 1793: /*
1794: * If we didn't print out any commands to the shell script,
1795: * there's not much point in executing the shell, is there?
1796: */
1797: if (numCommands == 0) {
1798: noExec = TRUE;
1799: }
1800: }
1801: } else if (noExecute) {
1802: /*
1803: * Not executing anything -- just print all the commands to stdout
1804: * in one fell swoop. This will still set up job->tailCmds correctly.
1805: */
1806: if (lastNode != gn) {
1.2 deraadt 1807: MESSAGE(stdout, gn);
1.1 deraadt 1808: lastNode = gn;
1809: }
1810: job->cmdFILE = stdout;
1811: /*
1812: * Only print the commands if they're ok, but don't die if they're
1813: * not -- just let the user know they're bad and keep going. It
1814: * doesn't do any harm in this case and may do some good.
1815: */
1816: if (cmdsOK) {
1817: Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
1818: }
1819: /*
1820: * Don't execute the shell, thank you.
1821: */
1822: noExec = TRUE;
1823: } else {
1824: /*
1825: * Just touch the target and note that no shell should be executed.
1826: * Set cmdFILE to stdout to make life easier. Check the commands, too,
1827: * but don't die if they're no good -- it does no harm to keep working
1828: * up the graph.
1829: */
1830: job->cmdFILE = stdout;
1.2 deraadt 1831: Job_Touch(gn, job->flags&JOB_SILENT);
1.1 deraadt 1832: noExec = TRUE;
1833: }
1834:
1835: /*
1.6 millert 1836: * If we're not supposed to execute a shell, don't.
1.1 deraadt 1837: */
1838: if (noExec) {
1839: /*
1840: * Unlink and close the command file if we opened one
1841: */
1842: if (job->cmdFILE != stdout) {
1.2 deraadt 1843: (void) eunlink(tfile);
1844: if (job->cmdFILE != NULL)
1845: (void) fclose(job->cmdFILE);
1.1 deraadt 1846: } else {
1.2 deraadt 1847: (void) fflush(stdout);
1.1 deraadt 1848: }
1849:
1850: /*
1851: * We only want to work our way up the graph if we aren't here because
1852: * the commands for the job were no good.
1853: */
1854: if (cmdsOK) {
1855: if (aborting == 0) {
1856: if (job->tailCmds != NILLNODE) {
1857: Lst_ForEachFrom(job->node->commands, job->tailCmds,
1858: JobSaveCommand,
1.2 deraadt 1859: (ClientData)job->node);
1.1 deraadt 1860: }
1861: Make_Update(job->node);
1862: }
1863: free((Address)job);
1864: return(JOB_FINISHED);
1865: } else {
1866: free((Address)job);
1867: return(JOB_ERROR);
1868: }
1869: } else {
1.2 deraadt 1870: (void) fflush(job->cmdFILE);
1871: (void) eunlink(tfile);
1.1 deraadt 1872: }
1873:
1874: /*
1875: * Set up the control arguments to the shell. This is based on the flags
1876: * set earlier for this job.
1877: */
1878: JobMakeArgv(job, argv);
1879:
1880: /*
1881: * If we're using pipes to catch output, create the pipe by which we'll
1882: * get the shell's output. If we're using files, print out that we're
1.7 millert 1883: * starting a job and then set up its temporary-file name.
1.1 deraadt 1884: */
1.2 deraadt 1885: if (!compatMake || (job->flags & JOB_FIRST)) {
1.1 deraadt 1886: if (usePipes) {
1887: int fd[2];
1.2 deraadt 1888: if (pipe(fd) == -1)
1889: Punt("Cannot create pipe: %s", strerror(errno));
1.1 deraadt 1890: job->inPipe = fd[0];
1891: job->outPipe = fd[1];
1.2 deraadt 1892: (void) fcntl(job->inPipe, F_SETFD, 1);
1893: (void) fcntl(job->outPipe, F_SETFD, 1);
1.1 deraadt 1894: } else {
1.2 deraadt 1895: (void) fprintf(stdout, "Remaking `%s'\n", gn->name);
1896: (void) fflush(stdout);
1.7 millert 1897: (void) strcpy(job->outFile, TMPPAT);
1898: if ((job->outFd = mkstemp(job->outFile)) == -1)
1899: Punt("Cannot create temp file: %s", strerror(errno));
1.2 deraadt 1900: (void) fcntl(job->outFd, F_SETFD, 1);
1.1 deraadt 1901: }
1902: }
1903:
1.2 deraadt 1904: #ifdef REMOTE
1905: if (!(gn->type & OP_NOEXPORT) && !(runLocalFirst && nLocal < maxLocal)) {
1906: #ifdef RMT_NO_EXEC
1907: local = !Rmt_Export(shellPath, argv, job);
1908: #else
1909: local = !Rmt_Begin(shellPath, argv, job->node);
1910: #endif /* RMT_NO_EXEC */
1911: if (!local) {
1912: job->flags |= JOB_REMOTE;
1913: }
1914: } else
1915: #endif
1916: local = TRUE;
1.1 deraadt 1917:
1918: if (local && (((nLocal >= maxLocal) &&
1.2 deraadt 1919: !(job->flags & JOB_SPECIAL) &&
1920: #ifdef REMOTE
1921: (!(gn->type & OP_NOEXPORT) || (maxLocal != 0))
1922: #else
1923: (maxLocal != 0)
1924: #endif
1925: )))
1.1 deraadt 1926: {
1927: /*
1928: * The job can only be run locally, but we've hit the limit of
1929: * local concurrency, so put the job on hold until some other job
1.6 millert 1930: * finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
1.1 deraadt 1931: * may be run locally even when the local limit has been reached
1.6 millert 1932: * (e.g. when maxLocal == 0), though they will be exported if at
1.2 deraadt 1933: * all possible. In addition, any target marked with .NOEXPORT will
1934: * be run locally if maxLocal is 0.
1.1 deraadt 1935: */
1936: jobFull = TRUE;
1.6 millert 1937:
1.1 deraadt 1938: if (DEBUG(JOB)) {
1.2 deraadt 1939: (void) fprintf(stdout, "Can only run job locally.\n");
1940: (void) fflush(stdout);
1.1 deraadt 1941: }
1942: job->flags |= JOB_RESTART;
1.2 deraadt 1943: (void) Lst_AtEnd(stoppedJobs, (ClientData)job);
1.1 deraadt 1944: } else {
1945: if ((nLocal >= maxLocal) && local) {
1946: /*
1.6 millert 1947: * If we're running this job locally as a special case (see above),
1.1 deraadt 1948: * at least say the table is full.
1949: */
1950: jobFull = TRUE;
1951: if (DEBUG(JOB)) {
1.2 deraadt 1952: (void) fprintf(stdout, "Local job queue is full.\n");
1953: (void) fflush(stdout);
1.1 deraadt 1954: }
1955: }
1956: JobExec(job, argv);
1957: }
1958: return(JOB_RUNNING);
1959: }
1960:
1.6 millert 1961: static char *
1.2 deraadt 1962: JobOutput(job, cp, endp, msg)
1963: register Job *job;
1964: register char *cp, *endp;
1965: int msg;
1966: {
1967: register char *ecp;
1968:
1969: if (commandShell->noPrint) {
1970: ecp = Str_FindSubstring(cp, commandShell->noPrint);
1971: while (ecp != NULL) {
1972: if (cp != ecp) {
1973: *ecp = '\0';
1974: if (msg && job->node != lastNode) {
1975: MESSAGE(stdout, job->node);
1976: lastNode = job->node;
1977: }
1978: /*
1979: * The only way there wouldn't be a newline after
1980: * this line is if it were the last in the buffer.
1981: * however, since the non-printable comes after it,
1982: * there must be a newline, so we don't print one.
1983: */
1984: (void) fprintf(stdout, "%s", cp);
1985: (void) fflush(stdout);
1986: }
1987: cp = ecp + commandShell->noPLen;
1988: if (cp != endp) {
1989: /*
1990: * Still more to print, look again after skipping
1991: * the whitespace following the non-printable
1992: * command....
1993: */
1994: cp++;
1995: while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
1996: cp++;
1997: }
1998: ecp = Str_FindSubstring(cp, commandShell->noPrint);
1999: } else {
2000: return cp;
2001: }
2002: }
2003: }
2004: return cp;
2005: }
2006:
1.1 deraadt 2007: /*-
2008: *-----------------------------------------------------------------------
2009: * JobDoOutput --
2010: * This function is called at different times depending on
2011: * whether the user has specified that output is to be collected
2012: * via pipes or temporary files. In the former case, we are called
2013: * whenever there is something to read on the pipe. We collect more
2014: * output from the given job and store it in the job's outBuf. If
2015: * this makes up a line, we print it tagged by the job's identifier,
2016: * as necessary.
2017: * If output has been collected in a temporary file, we open the
2018: * file and read it line by line, transfering it to our own
2019: * output channel until the file is empty. At which point we
2020: * remove the temporary file.
2021: * In both cases, however, we keep our figurative eye out for the
2022: * 'noPrint' line for the shell from which the output came. If
2023: * we recognize a line, we don't print it. If the command is not
1.6 millert 2024: * alone on the line (the character after it is not \0 or \n), we
1.1 deraadt 2025: * do print whatever follows it.
2026: *
2027: * Results:
2028: * None
2029: *
2030: * Side Effects:
2031: * curPos may be shifted as may the contents of outBuf.
2032: *-----------------------------------------------------------------------
2033: */
1.2 deraadt 2034: STATIC void
2035: JobDoOutput(job, finish)
1.1 deraadt 2036: register Job *job; /* the job whose output needs printing */
2037: Boolean finish; /* TRUE if this is the last time we'll be
2038: * called for this job */
2039: {
2040: Boolean gotNL = FALSE; /* true if got a newline */
1.2 deraadt 2041: Boolean fbuf; /* true if our buffer filled up */
1.1 deraadt 2042: register int nr; /* number of bytes read */
2043: register int i; /* auxiliary index into outBuf */
1.6 millert 2044: register int max; /* limit for i (end of current data) */
2045: int nRead; /* (Temporary) number of bytes read */
1.1 deraadt 2046:
2047: FILE *oFILE; /* Stream pointer to shell's output file */
2048: char inLine[132];
2049:
1.6 millert 2050:
1.1 deraadt 2051: if (usePipes) {
2052: /*
2053: * Read as many bytes as will fit in the buffer.
2054: */
2055: end_loop:
1.2 deraadt 2056: gotNL = FALSE;
2057: fbuf = FALSE;
1.6 millert 2058:
1.2 deraadt 2059: nRead = read(job->inPipe, &job->outBuf[job->curPos],
1.1 deraadt 2060: JOB_BUFSIZE - job->curPos);
2061: if (nRead < 0) {
2062: if (DEBUG(JOB)) {
2063: perror("JobDoOutput(piperead)");
2064: }
2065: nr = 0;
2066: } else {
2067: nr = nRead;
2068: }
2069:
2070: /*
1.6 millert 2071: * If we hit the end-of-file (the job is dead), we must flush its
1.1 deraadt 2072: * remaining output, so pretend we read a newline if there's any
2073: * output remaining in the buffer.
2074: * Also clear the 'finish' flag so we stop looping.
2075: */
2076: if ((nr == 0) && (job->curPos != 0)) {
2077: job->outBuf[job->curPos] = '\n';
2078: nr = 1;
2079: finish = FALSE;
2080: } else if (nr == 0) {
2081: finish = FALSE;
2082: }
1.6 millert 2083:
1.1 deraadt 2084: /*
2085: * Look for the last newline in the bytes we just got. If there is
2086: * one, break out of the loop with 'i' as its index and gotNL set
1.6 millert 2087: * TRUE.
1.1 deraadt 2088: */
2089: max = job->curPos + nr;
2090: for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
2091: if (job->outBuf[i] == '\n') {
2092: gotNL = TRUE;
2093: break;
2094: } else if (job->outBuf[i] == '\0') {
2095: /*
2096: * Why?
2097: */
2098: job->outBuf[i] = ' ';
2099: }
2100: }
1.6 millert 2101:
1.1 deraadt 2102: if (!gotNL) {
2103: job->curPos += nr;
2104: if (job->curPos == JOB_BUFSIZE) {
2105: /*
2106: * If we've run out of buffer space, we have no choice
1.6 millert 2107: * but to print the stuff. sigh.
1.1 deraadt 2108: */
1.2 deraadt 2109: fbuf = TRUE;
1.1 deraadt 2110: i = job->curPos;
2111: }
2112: }
1.2 deraadt 2113: if (gotNL || fbuf) {
1.1 deraadt 2114: /*
2115: * Need to send the output to the screen. Null terminate it
2116: * first, overwriting the newline character if there was one.
1.6 millert 2117: * So long as the line isn't one we should filter (according
1.1 deraadt 2118: * to the shell description), we print the line, preceeded
2119: * by a target banner if this target isn't the same as the
2120: * one for which we last printed something.
2121: * The rest of the data in the buffer are then shifted down
1.6 millert 2122: * to the start of the buffer and curPos is set accordingly.
1.1 deraadt 2123: */
2124: job->outBuf[i] = '\0';
2125: if (i >= job->curPos) {
1.2 deraadt 2126: char *cp;
1.6 millert 2127:
2128: cp = JobOutput(job, job->outBuf, &job->outBuf[i], FALSE);
1.1 deraadt 2129:
2130: /*
2131: * There's still more in that thar buffer. This time, though,
2132: * we know there's no newline at the end, so we add one of
2133: * our own free will.
2134: */
2135: if (*cp != '\0') {
2136: if (job->node != lastNode) {
1.2 deraadt 2137: MESSAGE(stdout, job->node);
1.1 deraadt 2138: lastNode = job->node;
2139: }
1.2 deraadt 2140: (void) fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
2141: (void) fflush(stdout);
1.1 deraadt 2142: }
2143: }
2144: if (i < max - 1) {
2145: /* shift the remaining characters down */
1.6 millert 2146: (void) memcpy(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
2147: job->curPos = max - (i + 1);
2148:
1.1 deraadt 2149: } else {
2150: /*
2151: * We have written everything out, so we just start over
2152: * from the start of the buffer. No copying. No nothing.
2153: */
2154: job->curPos = 0;
2155: }
2156: }
2157: if (finish) {
2158: /*
2159: * If the finish flag is true, we must loop until we hit
1.6 millert 2160: * end-of-file on the pipe. This is guaranteed to happen
2161: * eventually since the other end of the pipe is now closed
2162: * (we closed it explicitly and the child has exited). When
2163: * we do get an EOF, finish will be set FALSE and we'll fall
2164: * through and out.
1.1 deraadt 2165: */
2166: goto end_loop;
2167: }
2168: } else {
2169: /*
2170: * We've been called to retrieve the output of the job from the
2171: * temporary file where it's been squirreled away. This consists of
2172: * opening the file, reading the output line by line, being sure not
2173: * to print the noPrint line for the shell we used, then close and
2174: * remove the temporary file. Very simple.
2175: *
2176: * Change to read in blocks and do FindSubString type things as for
2177: * pipes? That would allow for "@echo -n..."
2178: */
1.2 deraadt 2179: oFILE = fopen(job->outFile, "r");
2180: if (oFILE != NULL) {
2181: (void) fprintf(stdout, "Results of making %s:\n", job->node->name);
2182: (void) fflush(stdout);
2183: while (fgets(inLine, sizeof(inLine), oFILE) != NULL) {
2184: register char *cp, *endp, *oendp;
1.1 deraadt 2185:
2186: cp = inLine;
1.2 deraadt 2187: oendp = endp = inLine + strlen(inLine);
1.1 deraadt 2188: if (endp[-1] == '\n') {
2189: *--endp = '\0';
2190: }
1.2 deraadt 2191: cp = JobOutput(job, inLine, endp, FALSE);
1.1 deraadt 2192:
2193: /*
2194: * There's still more in that thar buffer. This time, though,
2195: * we know there's no newline at the end, so we add one of
2196: * our own free will.
2197: */
1.2 deraadt 2198: (void) fprintf(stdout, "%s", cp);
2199: (void) fflush(stdout);
2200: if (endp != oendp) {
2201: (void) fprintf(stdout, "\n");
2202: (void) fflush(stdout);
1.1 deraadt 2203: }
2204: }
1.2 deraadt 2205: (void) fclose(oFILE);
2206: (void) eunlink(job->outFile);
1.1 deraadt 2207: }
2208: }
2209: }
2210:
2211: /*-
2212: *-----------------------------------------------------------------------
2213: * Job_CatchChildren --
2214: * Handle the exit of a child. Called from Make_Make.
2215: *
2216: * Results:
2217: * none.
2218: *
2219: * Side Effects:
2220: * The job descriptor is removed from the list of children.
2221: *
2222: * Notes:
2223: * We do waits, blocking or not, according to the wisdom of our
2224: * caller, until there are no more children to report. For each
2225: * job, call JobFinish to finish things off. This will take care of
2226: * putting jobs on the stoppedJobs queue.
2227: *
2228: *-----------------------------------------------------------------------
2229: */
2230: void
1.2 deraadt 2231: Job_CatchChildren(block)
1.1 deraadt 2232: Boolean block; /* TRUE if should block on the wait. */
2233: {
2234: int pid; /* pid of dead child */
2235: register Job *job; /* job descriptor for dead child */
2236: LstNode jnode; /* list element for finding job */
1.2 deraadt 2237: int status; /* Exit/termination status */
1.1 deraadt 2238:
2239: /*
2240: * Don't even bother if we know there's no one around.
2241: */
2242: if (nLocal == 0) {
2243: return;
2244: }
1.6 millert 2245:
1.2 deraadt 2246: while ((pid = waitpid((pid_t) -1, &status,
2247: (block?0:WNOHANG)|WUNTRACED)) > 0)
1.1 deraadt 2248: {
1.2 deraadt 2249: if (DEBUG(JOB)) {
2250: (void) fprintf(stdout, "Process %d exited or stopped.\n", pid);
2251: (void) fflush(stdout);
2252: }
1.6 millert 2253:
1.1 deraadt 2254:
1.2 deraadt 2255: jnode = Lst_Find(jobs, (ClientData)&pid, JobCmpPid);
1.1 deraadt 2256:
2257: if (jnode == NILLNODE) {
1.2 deraadt 2258: if (WIFSIGNALED(status) && (WTERMSIG(status) == SIGCONT)) {
1.1 deraadt 2259: jnode = Lst_Find(stoppedJobs, (ClientData) &pid, JobCmpPid);
2260: if (jnode == NILLNODE) {
1.6 millert 2261: Error("Resumed child (%d) not in table", pid);
1.1 deraadt 2262: continue;
2263: }
2264: job = (Job *)Lst_Datum(jnode);
1.2 deraadt 2265: (void) Lst_Remove(stoppedJobs, jnode);
1.1 deraadt 2266: } else {
1.6 millert 2267: Error("Child (%d) not in table?", pid);
1.1 deraadt 2268: continue;
2269: }
2270: } else {
1.2 deraadt 2271: job = (Job *) Lst_Datum(jnode);
2272: (void) Lst_Remove(jobs, jnode);
1.1 deraadt 2273: nJobs -= 1;
2274: if (jobFull && DEBUG(JOB)) {
1.2 deraadt 2275: (void) fprintf(stdout, "Job queue is no longer full.\n");
2276: (void) fflush(stdout);
1.1 deraadt 2277: }
2278: jobFull = FALSE;
1.2 deraadt 2279: #ifdef REMOTE
2280: if (!(job->flags & JOB_REMOTE)) {
2281: if (DEBUG(JOB)) {
2282: (void) fprintf(stdout,
2283: "Job queue has one fewer local process.\n");
2284: (void) fflush(stdout);
2285: }
2286: nLocal -= 1;
2287: }
2288: #else
1.1 deraadt 2289: nLocal -= 1;
1.2 deraadt 2290: #endif
1.1 deraadt 2291: }
2292:
1.2 deraadt 2293: JobFinish(job, &status);
1.1 deraadt 2294: }
2295: }
2296:
2297: /*-
2298: *-----------------------------------------------------------------------
2299: * Job_CatchOutput --
2300: * Catch the output from our children, if we're using
2301: * pipes do so. Otherwise just block time until we get a
1.6 millert 2302: * signal (most likely a SIGCHLD) since there's no point in
1.1 deraadt 2303: * just spinning when there's nothing to do and the reaping
1.6 millert 2304: * of a child can wait for a while.
1.1 deraadt 2305: *
2306: * Results:
1.6 millert 2307: * None
1.1 deraadt 2308: *
2309: * Side Effects:
2310: * Output is read from pipes if we're piping.
2311: * -----------------------------------------------------------------------
2312: */
2313: void
1.2 deraadt 2314: Job_CatchOutput()
1.1 deraadt 2315: {
2316: int nfds;
2317: struct timeval timeout;
2318: register LstNode ln;
2319: register Job *job;
2320: #ifdef RMT_WILL_WATCH
2321: int pnJobs; /* Previous nJobs */
2322: #endif
2323:
1.2 deraadt 2324: (void) fflush(stdout);
1.1 deraadt 2325: #ifdef RMT_WILL_WATCH
2326: pnJobs = nJobs;
2327:
2328: /*
2329: * It is possible for us to be called with nJobs equal to 0. This happens
2330: * if all the jobs finish and a job that is stopped cannot be run
2331: * locally (eg if maxLocal is 0) and cannot be exported. The job will
2332: * be placed back on the stoppedJobs queue, Job_Empty() will return false,
2333: * Make_Run will call us again when there's nothing for which to wait.
2334: * nJobs never changes, so we loop forever. Hence the check. It could
2335: * be argued that we should sleep for a bit so as not to swamp the
2336: * exportation system with requests. Perhaps we should.
2337: *
2338: * NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren
2339: * IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT.
2340: * It may use the variable nLocal to determine if it needs to call
1.6 millert 2341: * Job_CatchChildren (if nLocal is 0, there's nothing for which to
1.1 deraadt 2342: * wait...)
2343: */
2344: while (nJobs != 0 && pnJobs == nJobs) {
2345: Rmt_Wait();
2346: }
2347: #else
2348: if (usePipes) {
1.8 ! deraadt 2349: int count = howmany(outputsn+1, NFDBITS) * sizeof(fd_mask);
! 2350: fd_set *readfdsp = malloc(count);
! 2351: if (readfdsp == NULL)
! 2352: return;
! 2353:
! 2354: memcpy(readfdsp, outputsp, count);
1.1 deraadt 2355: timeout.tv_sec = SEL_SEC;
2356: timeout.tv_usec = SEL_USEC;
2357:
1.8 ! deraadt 2358: if ((nfds = select(outputsn+1, readfdsp, (fd_set *) 0,
! 2359: (fd_set *) 0, &timeout)) <= 0) {
! 2360: free(readfdsp);
1.1 deraadt 2361: return;
1.8 ! deraadt 2362: } else {
1.2 deraadt 2363: if (Lst_Open(jobs) == FAILURE) {
1.8 ! deraadt 2364: free(readfdsp);
1.2 deraadt 2365: Punt("Cannot open job table");
1.1 deraadt 2366: }
1.2 deraadt 2367: while (nfds && (ln = Lst_Next(jobs)) != NILLNODE) {
2368: job = (Job *) Lst_Datum(ln);
1.8 ! deraadt 2369: if (FD_ISSET(job->inPipe, readfdsp)) {
1.2 deraadt 2370: JobDoOutput(job, FALSE);
1.1 deraadt 2371: nfds -= 1;
2372: }
2373: }
1.2 deraadt 2374: Lst_Close(jobs);
1.1 deraadt 2375: }
1.8 ! deraadt 2376: free(readfdsp);
1.1 deraadt 2377: }
2378: #endif /* RMT_WILL_WATCH */
2379: }
2380:
2381: /*-
2382: *-----------------------------------------------------------------------
2383: * Job_Make --
2384: * Start the creation of a target. Basically a front-end for
2385: * JobStart used by the Make module.
2386: *
2387: * Results:
2388: * None.
2389: *
2390: * Side Effects:
2391: * Another job is started.
2392: *
2393: *-----------------------------------------------------------------------
2394: */
2395: void
1.2 deraadt 2396: Job_Make(gn)
1.1 deraadt 2397: GNode *gn;
2398: {
1.2 deraadt 2399: (void) JobStart(gn, 0, NULL);
1.1 deraadt 2400: }
2401:
2402: /*-
2403: *-----------------------------------------------------------------------
2404: * Job_Init --
2405: * Initialize the process module
2406: *
2407: * Results:
2408: * none
2409: *
2410: * Side Effects:
2411: * lists and counters are initialized
2412: *-----------------------------------------------------------------------
2413: */
2414: void
1.2 deraadt 2415: Job_Init(maxproc, maxlocal)
1.1 deraadt 2416: int maxproc; /* the greatest number of jobs which may be
2417: * running at one time */
2418: int maxlocal; /* the greatest number of local jobs which may
2419: * be running at once. */
2420: {
2421: GNode *begin; /* node for commands to do at the very start */
1.7 millert 2422: int tfd;
1.1 deraadt 2423:
1.7 millert 2424: (void) strcpy(tfile, TMPPAT);
2425: if ((tfd = mkstemp(tfile)) == -1)
2426: Punt("Cannot create temp file: %s", strerror(errno));
2427: else
2428: (void) close(tfd);
1.1 deraadt 2429:
1.2 deraadt 2430: jobs = Lst_Init(FALSE);
1.1 deraadt 2431: stoppedJobs = Lst_Init(FALSE);
2432: maxJobs = maxproc;
2433: maxLocal = maxlocal;
2434: nJobs = 0;
2435: nLocal = 0;
2436: jobFull = FALSE;
2437:
2438: aborting = 0;
2439: errors = 0;
2440:
2441: lastNode = NILGNODE;
2442:
1.2 deraadt 2443: if (maxJobs == 1
2444: #ifdef REMOTE
2445: || noMessages
2446: #endif
2447: ) {
1.1 deraadt 2448: /*
2449: * If only one job can run at a time, there's no need for a banner,
2450: * no is there?
2451: */
2452: targFmt = "";
2453: } else {
2454: targFmt = TARG_FMT;
2455: }
1.6 millert 2456:
1.2 deraadt 2457: if (shellPath == NULL) {
1.1 deraadt 2458: /*
2459: * The user didn't specify a shell to use, so we are using the
2460: * default one... Both the absolute path and the last component
2461: * must be set. The last component is taken from the 'name' field
2462: * of the default shell description pointed-to by commandShell.
2463: * All default shells are located in _PATH_DEFSHELLDIR.
2464: */
2465: shellName = commandShell->name;
1.2 deraadt 2466: shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
1.1 deraadt 2467: }
2468:
1.2 deraadt 2469: if (commandShell->exit == NULL) {
1.1 deraadt 2470: commandShell->exit = "";
2471: }
1.2 deraadt 2472: if (commandShell->echo == NULL) {
1.1 deraadt 2473: commandShell->echo = "";
2474: }
2475:
2476: /*
2477: * Catch the four signals that POSIX specifies if they aren't ignored.
2478: * JobPassSig will take care of calling JobInterrupt if appropriate.
2479: */
1.2 deraadt 2480: if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
2481: (void) signal(SIGINT, JobPassSig);
1.1 deraadt 2482: }
1.2 deraadt 2483: if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
2484: (void) signal(SIGHUP, JobPassSig);
1.1 deraadt 2485: }
1.2 deraadt 2486: if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
2487: (void) signal(SIGQUIT, JobPassSig);
1.1 deraadt 2488: }
1.2 deraadt 2489: if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
2490: (void) signal(SIGTERM, JobPassSig);
1.1 deraadt 2491: }
2492: /*
2493: * There are additional signals that need to be caught and passed if
2494: * either the export system wants to be told directly of signals or if
1.6 millert 2495: * we're giving each job its own process group (since then it won't get
1.1 deraadt 2496: * signals from the terminal driver as we own the terminal)
2497: */
2498: #if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
1.2 deraadt 2499: if (signal(SIGTSTP, SIG_IGN) != SIG_IGN) {
2500: (void) signal(SIGTSTP, JobPassSig);
1.1 deraadt 2501: }
1.2 deraadt 2502: if (signal(SIGTTOU, SIG_IGN) != SIG_IGN) {
2503: (void) signal(SIGTTOU, JobPassSig);
1.1 deraadt 2504: }
1.2 deraadt 2505: if (signal(SIGTTIN, SIG_IGN) != SIG_IGN) {
2506: (void) signal(SIGTTIN, JobPassSig);
1.1 deraadt 2507: }
1.2 deraadt 2508: if (signal(SIGWINCH, SIG_IGN) != SIG_IGN) {
2509: (void) signal(SIGWINCH, JobPassSig);
1.1 deraadt 2510: }
2511: #endif
1.6 millert 2512:
1.2 deraadt 2513: begin = Targ_FindNode(".BEGIN", TARG_NOCREATE);
1.1 deraadt 2514:
2515: if (begin != NILGNODE) {
1.2 deraadt 2516: JobStart(begin, JOB_SPECIAL, (Job *)0);
1.1 deraadt 2517: while (nJobs) {
2518: Job_CatchOutput();
2519: #ifndef RMT_WILL_WATCH
1.2 deraadt 2520: Job_CatchChildren(!usePipes);
1.1 deraadt 2521: #endif /* RMT_WILL_WATCH */
2522: }
2523: }
1.2 deraadt 2524: postCommands = Targ_FindNode(".END", TARG_CREATE);
1.1 deraadt 2525: }
2526:
2527: /*-
2528: *-----------------------------------------------------------------------
2529: * Job_Full --
2530: * See if the job table is full. It is considered full if it is OR
2531: * if we are in the process of aborting OR if we have
2532: * reached/exceeded our local quota. This prevents any more jobs
2533: * from starting up.
2534: *
2535: * Results:
2536: * TRUE if the job table is full, FALSE otherwise
2537: * Side Effects:
2538: * None.
2539: *-----------------------------------------------------------------------
2540: */
2541: Boolean
1.2 deraadt 2542: Job_Full()
1.1 deraadt 2543: {
1.2 deraadt 2544: return(aborting || jobFull);
1.1 deraadt 2545: }
2546:
2547: /*-
2548: *-----------------------------------------------------------------------
2549: * Job_Empty --
2550: * See if the job table is empty. Because the local concurrency may
2551: * be set to 0, it is possible for the job table to become empty,
2552: * while the list of stoppedJobs remains non-empty. In such a case,
2553: * we want to restart as many jobs as we can.
2554: *
2555: * Results:
2556: * TRUE if it is. FALSE if it ain't.
2557: *
2558: * Side Effects:
2559: * None.
2560: *
2561: * -----------------------------------------------------------------------
2562: */
2563: Boolean
1.2 deraadt 2564: Job_Empty()
1.1 deraadt 2565: {
2566: if (nJobs == 0) {
2567: if (!Lst_IsEmpty(stoppedJobs) && !aborting) {
2568: /*
2569: * The job table is obviously not full if it has no jobs in
2570: * it...Try and restart the stopped jobs.
2571: */
2572: jobFull = FALSE;
1.2 deraadt 2573: JobRestartJobs();
1.1 deraadt 2574: return(FALSE);
2575: } else {
2576: return(TRUE);
2577: }
2578: } else {
2579: return(FALSE);
2580: }
2581: }
2582:
2583: /*-
2584: *-----------------------------------------------------------------------
2585: * JobMatchShell --
2586: * Find a matching shell in 'shells' given its final component.
2587: *
2588: * Results:
2589: * A pointer to the Shell structure.
2590: *
2591: * Side Effects:
2592: * None.
2593: *
2594: *-----------------------------------------------------------------------
2595: */
2596: static Shell *
1.2 deraadt 2597: JobMatchShell(name)
1.1 deraadt 2598: char *name; /* Final component of shell path */
2599: {
2600: register Shell *sh; /* Pointer into shells table */
2601: Shell *match; /* Longest-matching shell */
2602: register char *cp1,
2603: *cp2;
2604: char *eoname;
2605:
1.2 deraadt 2606: eoname = name + strlen(name);
1.1 deraadt 2607:
1.2 deraadt 2608: match = NULL;
1.1 deraadt 2609:
2610: for (sh = shells; sh->name != NULL; sh++) {
1.2 deraadt 2611: for (cp1 = eoname - strlen(sh->name), cp2 = sh->name;
1.1 deraadt 2612: *cp1 != '\0' && *cp1 == *cp2;
2613: cp1++, cp2++) {
2614: continue;
2615: }
2616: if (*cp1 != *cp2) {
2617: continue;
1.2 deraadt 2618: } else if (match == NULL || strlen(match->name) < strlen(sh->name)) {
2619: match = sh;
1.1 deraadt 2620: }
2621: }
1.2 deraadt 2622: return(match == NULL ? sh : match);
1.1 deraadt 2623: }
2624:
2625: /*-
2626: *-----------------------------------------------------------------------
2627: * Job_ParseShell --
2628: * Parse a shell specification and set up commandShell, shellPath
2629: * and shellName appropriately.
2630: *
2631: * Results:
2632: * FAILURE if the specification was incorrect.
2633: *
2634: * Side Effects:
2635: * commandShell points to a Shell structure (either predefined or
2636: * created from the shell spec), shellPath is the full path of the
2637: * shell described by commandShell, while shellName is just the
2638: * final component of shellPath.
2639: *
2640: * Notes:
2641: * A shell specification consists of a .SHELL target, with dependency
2642: * operator, followed by a series of blank-separated words. Double
2643: * quotes can be used to use blanks in words. A backslash escapes
2644: * anything (most notably a double-quote and a space) and
2645: * provides the functionality it does in C. Each word consists of
2646: * keyword and value separated by an equal sign. There should be no
2647: * unnecessary spaces in the word. The keywords are as follows:
2648: * name Name of shell.
2649: * path Location of shell. Overrides "name" if given
2650: * quiet Command to turn off echoing.
2651: * echo Command to turn echoing on
2652: * filter Result of turning off echoing that shouldn't be
2653: * printed.
2654: * echoFlag Flag to turn echoing on at the start
2655: * errFlag Flag to turn error checking on at the start
2656: * hasErrCtl True if shell has error checking control
2657: * check Command to turn on error checking if hasErrCtl
2658: * is TRUE or template of command to echo a command
2659: * for which error checking is off if hasErrCtl is
2660: * FALSE.
2661: * ignore Command to turn off error checking if hasErrCtl
2662: * is TRUE or template of command to execute a
2663: * command so as to ignore any errors it returns if
2664: * hasErrCtl is FALSE.
2665: *
2666: *-----------------------------------------------------------------------
2667: */
2668: ReturnStatus
1.2 deraadt 2669: Job_ParseShell(line)
1.1 deraadt 2670: char *line; /* The shell spec */
2671: {
2672: char **words;
2673: int wordCount;
2674: register char **argv;
2675: register int argc;
2676: char *path;
2677: Shell newShell;
2678: Boolean fullSpec = FALSE;
2679:
1.2 deraadt 2680: while (isspace(*line)) {
1.1 deraadt 2681: line++;
2682: }
1.2 deraadt 2683: words = brk_string(line, &wordCount, TRUE);
1.1 deraadt 2684:
1.2 deraadt 2685: memset((Address)&newShell, 0, sizeof(newShell));
1.6 millert 2686:
1.1 deraadt 2687: /*
2688: * Parse the specification by keyword
2689: */
1.2 deraadt 2690: for (path = NULL, argc = wordCount - 1, argv = words + 1;
1.1 deraadt 2691: argc != 0;
2692: argc--, argv++) {
1.2 deraadt 2693: if (strncmp(*argv, "path=", 5) == 0) {
1.1 deraadt 2694: path = &argv[0][5];
1.2 deraadt 2695: } else if (strncmp(*argv, "name=", 5) == 0) {
1.1 deraadt 2696: newShell.name = &argv[0][5];
2697: } else {
1.2 deraadt 2698: if (strncmp(*argv, "quiet=", 6) == 0) {
1.1 deraadt 2699: newShell.echoOff = &argv[0][6];
1.2 deraadt 2700: } else if (strncmp(*argv, "echo=", 5) == 0) {
1.1 deraadt 2701: newShell.echoOn = &argv[0][5];
1.2 deraadt 2702: } else if (strncmp(*argv, "filter=", 7) == 0) {
1.1 deraadt 2703: newShell.noPrint = &argv[0][7];
2704: newShell.noPLen = strlen(newShell.noPrint);
1.2 deraadt 2705: } else if (strncmp(*argv, "echoFlag=", 9) == 0) {
1.1 deraadt 2706: newShell.echo = &argv[0][9];
1.2 deraadt 2707: } else if (strncmp(*argv, "errFlag=", 8) == 0) {
1.1 deraadt 2708: newShell.exit = &argv[0][8];
1.2 deraadt 2709: } else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
1.1 deraadt 2710: char c = argv[0][10];
2711: newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
1.2 deraadt 2712: (c != 'T') && (c != 't'));
2713: } else if (strncmp(*argv, "check=", 6) == 0) {
1.1 deraadt 2714: newShell.errCheck = &argv[0][6];
1.2 deraadt 2715: } else if (strncmp(*argv, "ignore=", 7) == 0) {
1.1 deraadt 2716: newShell.ignErr = &argv[0][7];
2717: } else {
1.2 deraadt 2718: Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
1.1 deraadt 2719: *argv);
1.2 deraadt 2720: return(FAILURE);
1.1 deraadt 2721: }
2722: fullSpec = TRUE;
2723: }
2724: }
2725:
1.2 deraadt 2726: if (path == NULL) {
1.1 deraadt 2727: /*
2728: * If no path was given, the user wants one of the pre-defined shells,
2729: * yes? So we find the one s/he wants with the help of JobMatchShell
2730: * and set things up the right way. shellPath will be set up by
2731: * Job_Init.
2732: */
1.2 deraadt 2733: if (newShell.name == NULL) {
2734: Parse_Error(PARSE_FATAL, "Neither path nor name specified");
2735: return(FAILURE);
1.1 deraadt 2736: } else {
1.2 deraadt 2737: commandShell = JobMatchShell(newShell.name);
1.1 deraadt 2738: shellName = newShell.name;
2739: }
2740: } else {
2741: /*
1.6 millert 2742: * The user provided a path. If s/he gave nothing else (fullSpec is
1.1 deraadt 2743: * FALSE), try and find a matching shell in the ones we know of.
2744: * Else we just take the specification at its word and copy it
2745: * to a new location. In either case, we need to record the
2746: * path the user gave for the shell.
2747: */
2748: shellPath = path;
1.2 deraadt 2749: path = strrchr(path, '/');
2750: if (path == NULL) {
1.1 deraadt 2751: path = shellPath;
2752: } else {
2753: path += 1;
2754: }
1.2 deraadt 2755: if (newShell.name != NULL) {
1.1 deraadt 2756: shellName = newShell.name;
2757: } else {
2758: shellName = path;
2759: }
2760: if (!fullSpec) {
1.2 deraadt 2761: commandShell = JobMatchShell(shellName);
1.1 deraadt 2762: } else {
2763: commandShell = (Shell *) emalloc(sizeof(Shell));
2764: *commandShell = newShell;
2765: }
2766: }
2767:
2768: if (commandShell->echoOn && commandShell->echoOff) {
2769: commandShell->hasEchoCtl = TRUE;
2770: }
1.6 millert 2771:
1.1 deraadt 2772: if (!commandShell->hasErrCtl) {
1.2 deraadt 2773: if (commandShell->errCheck == NULL) {
1.1 deraadt 2774: commandShell->errCheck = "";
2775: }
1.2 deraadt 2776: if (commandShell->ignErr == NULL) {
1.1 deraadt 2777: commandShell->ignErr = "%s\n";
2778: }
2779: }
1.6 millert 2780:
1.1 deraadt 2781: /*
2782: * Do not free up the words themselves, since they might be in use by the
2783: * shell specification...
2784: */
1.2 deraadt 2785: free(words);
1.1 deraadt 2786: return SUCCESS;
2787: }
2788:
2789: /*-
2790: *-----------------------------------------------------------------------
2791: * JobInterrupt --
2792: * Handle the receipt of an interrupt.
2793: *
2794: * Results:
2795: * None
2796: *
2797: * Side Effects:
2798: * All children are killed. Another job will be started if the
2799: * .INTERRUPT target was given.
2800: *-----------------------------------------------------------------------
2801: */
2802: static void
1.2 deraadt 2803: JobInterrupt(runINTERRUPT, signo)
1.1 deraadt 2804: int runINTERRUPT; /* Non-zero if commands for the .INTERRUPT
2805: * target should be executed */
1.2 deraadt 2806: int signo; /* signal received */
1.1 deraadt 2807: {
2808: LstNode ln; /* element in job table */
2809: Job *job; /* job descriptor in that element */
2810: GNode *interrupt; /* the node describing the .INTERRUPT target */
1.6 millert 2811:
1.1 deraadt 2812: aborting = ABORT_INTERRUPT;
2813:
1.2 deraadt 2814: (void) Lst_Open(jobs);
2815: while ((ln = Lst_Next(jobs)) != NILLNODE) {
2816: job = (Job *) Lst_Datum(ln);
1.1 deraadt 2817:
1.2 deraadt 2818: if (!Targ_Precious(job->node)) {
2819: char *file = (job->node->path == NULL ?
1.1 deraadt 2820: job->node->name :
2821: job->node->path);
1.2 deraadt 2822: if (!noExecute && eunlink(file) != -1) {
2823: Error("*** %s removed", file);
1.1 deraadt 2824: }
2825: }
2826: #ifdef RMT_WANTS_SIGNALS
2827: if (job->flags & JOB_REMOTE) {
2828: /*
2829: * If job is remote, let the Rmt module do the killing.
2830: */
1.2 deraadt 2831: if (!Rmt_Signal(job, signo)) {
1.1 deraadt 2832: /*
2833: * If couldn't kill the thing, finish it out now with an
2834: * error code, since no exit report will come in likely.
2835: */
1.2 deraadt 2836: int status;
1.1 deraadt 2837:
2838: status.w_status = 0;
2839: status.w_retcode = 1;
1.2 deraadt 2840: JobFinish(job, &status);
1.1 deraadt 2841: }
2842: } else if (job->pid) {
1.2 deraadt 2843: KILL(job->pid, signo);
1.1 deraadt 2844: }
2845: #else
2846: if (job->pid) {
1.2 deraadt 2847: if (DEBUG(JOB)) {
2848: (void) fprintf(stdout,
1.6 millert 2849: "JobInterrupt passing signal to child %d.\n",
1.2 deraadt 2850: job->pid);
2851: (void) fflush(stdout);
2852: }
2853: KILL(job->pid, signo);
2854: }
2855: #endif /* RMT_WANTS_SIGNALS */
2856: }
2857:
2858: #ifdef REMOTE
2859: (void)Lst_Open(stoppedJobs);
2860: while ((ln = Lst_Next(stoppedJobs)) != NILLNODE) {
2861: job = (Job *) Lst_Datum(ln);
2862:
2863: if (job->flags & JOB_RESTART) {
2864: if (DEBUG(JOB)) {
2865: (void) fprintf(stdout, "%s%s",
2866: "JobInterrupt skipping job on stopped queue",
2867: "-- it was waiting to be restarted.\n");
2868: (void) fflush(stdout);
2869: }
2870: continue;
2871: }
2872: if (!Targ_Precious(job->node)) {
2873: char *file = (job->node->path == NULL ?
2874: job->node->name :
2875: job->node->path);
2876: if (eunlink(file) == 0) {
2877: Error("*** %s removed", file);
2878: }
2879: }
2880: /*
2881: * Resume the thing so it will take the signal.
2882: */
2883: if (DEBUG(JOB)) {
2884: (void) fprintf(stdout,
1.6 millert 2885: "JobInterrupt passing CONT to stopped child %d.\n",
1.2 deraadt 2886: job->pid);
2887: (void) fflush(stdout);
2888: }
2889: KILL(job->pid, SIGCONT);
2890: #ifdef RMT_WANTS_SIGNALS
2891: if (job->flags & JOB_REMOTE) {
2892: /*
2893: * If job is remote, let the Rmt module do the killing.
2894: */
2895: if (!Rmt_Signal(job, SIGINT)) {
2896: /*
2897: * If couldn't kill the thing, finish it out now with an
2898: * error code, since no exit report will come in likely.
2899: */
2900: int status;
2901: status.w_status = 0;
2902: status.w_retcode = 1;
2903: JobFinish(job, &status);
2904: }
2905: } else if (job->pid) {
2906: if (DEBUG(JOB)) {
2907: (void) fprintf(stdout,
2908: "JobInterrupt passing interrupt to stopped child %d.\n",
2909: job->pid);
2910: (void) fflush(stdout);
2911: }
1.1 deraadt 2912: KILL(job->pid, SIGINT);
2913: }
2914: #endif /* RMT_WANTS_SIGNALS */
2915: }
1.2 deraadt 2916: #endif
2917: Lst_Close(stoppedJobs);
1.1 deraadt 2918:
2919: if (runINTERRUPT && !touchFlag) {
1.2 deraadt 2920: interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
1.1 deraadt 2921: if (interrupt != NILGNODE) {
2922: ignoreErrors = FALSE;
2923:
1.2 deraadt 2924: JobStart(interrupt, JOB_IGNDOTS, (Job *)0);
1.1 deraadt 2925: while (nJobs) {
2926: Job_CatchOutput();
2927: #ifndef RMT_WILL_WATCH
1.2 deraadt 2928: Job_CatchChildren(!usePipes);
1.1 deraadt 2929: #endif /* RMT_WILL_WATCH */
2930: }
2931: }
2932: }
1.2 deraadt 2933: (void) eunlink(tfile);
2934: exit(signo);
1.1 deraadt 2935: }
2936:
2937: /*
2938: *-----------------------------------------------------------------------
2939: * Job_End --
2940: * Do final processing such as the running of the commands
1.6 millert 2941: * attached to the .END target.
1.1 deraadt 2942: *
2943: * Results:
2944: * Number of errors reported.
2945: *
2946: * Side Effects:
1.6 millert 2947: * The process' temporary file (tfile) is removed if it still
1.1 deraadt 2948: * existed.
2949: *-----------------------------------------------------------------------
2950: */
2951: int
1.2 deraadt 2952: Job_End()
1.1 deraadt 2953: {
1.2 deraadt 2954: if (postCommands != NILGNODE && !Lst_IsEmpty(postCommands->commands)) {
1.1 deraadt 2955: if (errors) {
1.2 deraadt 2956: Error("Errors reported so .END ignored");
1.1 deraadt 2957: } else {
1.2 deraadt 2958: JobStart(postCommands, JOB_SPECIAL | JOB_IGNDOTS, NULL);
1.1 deraadt 2959:
2960: while (nJobs) {
2961: Job_CatchOutput();
2962: #ifndef RMT_WILL_WATCH
1.2 deraadt 2963: Job_CatchChildren(!usePipes);
1.1 deraadt 2964: #endif /* RMT_WILL_WATCH */
2965: }
2966: }
2967: }
1.2 deraadt 2968: (void) eunlink(tfile);
1.1 deraadt 2969: return(errors);
2970: }
2971:
2972: /*-
2973: *-----------------------------------------------------------------------
2974: * Job_Wait --
2975: * Waits for all running jobs to finish and returns. Sets 'aborting'
2976: * to ABORT_WAIT to prevent other jobs from starting.
2977: *
2978: * Results:
2979: * None.
2980: *
2981: * Side Effects:
2982: * Currently running jobs finish.
2983: *
2984: *-----------------------------------------------------------------------
2985: */
2986: void
2987: Job_Wait()
2988: {
2989: aborting = ABORT_WAIT;
2990: while (nJobs != 0) {
2991: Job_CatchOutput();
2992: #ifndef RMT_WILL_WATCH
2993: Job_CatchChildren(!usePipes);
2994: #endif /* RMT_WILL_WATCH */
2995: }
2996: aborting = 0;
2997: }
2998:
2999: /*-
3000: *-----------------------------------------------------------------------
3001: * Job_AbortAll --
3002: * Abort all currently running jobs without handling output or anything.
3003: * This function is to be called only in the event of a major
3004: * error. Most definitely NOT to be called from JobInterrupt.
3005: *
3006: * Results:
3007: * None
3008: *
3009: * Side Effects:
3010: * All children are killed, not just the firstborn
3011: *-----------------------------------------------------------------------
3012: */
3013: void
1.2 deraadt 3014: Job_AbortAll()
1.1 deraadt 3015: {
1.2 deraadt 3016: LstNode ln; /* element in job table */
1.1 deraadt 3017: Job *job; /* the job descriptor in that element */
3018: int foo;
1.6 millert 3019:
1.1 deraadt 3020: aborting = ABORT_ERROR;
1.6 millert 3021:
1.1 deraadt 3022: if (nJobs) {
3023:
1.2 deraadt 3024: (void) Lst_Open(jobs);
3025: while ((ln = Lst_Next(jobs)) != NILLNODE) {
3026: job = (Job *) Lst_Datum(ln);
1.1 deraadt 3027:
3028: /*
3029: * kill the child process with increasingly drastic signals to make
1.6 millert 3030: * darn sure it's dead.
1.1 deraadt 3031: */
3032: #ifdef RMT_WANTS_SIGNALS
3033: if (job->flags & JOB_REMOTE) {
3034: Rmt_Signal(job, SIGINT);
3035: Rmt_Signal(job, SIGKILL);
3036: } else {
3037: KILL(job->pid, SIGINT);
3038: KILL(job->pid, SIGKILL);
3039: }
3040: #else
3041: KILL(job->pid, SIGINT);
3042: KILL(job->pid, SIGKILL);
3043: #endif /* RMT_WANTS_SIGNALS */
3044: }
3045: }
1.6 millert 3046:
1.1 deraadt 3047: /*
3048: * Catch as many children as want to report in at first, then give up
3049: */
1.2 deraadt 3050: while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
1.1 deraadt 3051: continue;
1.2 deraadt 3052: (void) eunlink(tfile);
3053: }
3054:
3055: #ifdef REMOTE
3056: /*-
3057: *-----------------------------------------------------------------------
3058: * JobFlagForMigration --
3059: * Handle the eviction of a child. Called from RmtStatusChange.
3060: * Flags the child as remigratable and then suspends it.
3061: *
3062: * Results:
3063: * none.
3064: *
3065: * Side Effects:
3066: * The job descriptor is flagged for remigration.
3067: *
3068: *-----------------------------------------------------------------------
3069: */
3070: void
3071: JobFlagForMigration(hostID)
3072: int hostID; /* ID of host we used, for matching children. */
3073: {
3074: register Job *job; /* job descriptor for dead child */
3075: LstNode jnode; /* list element for finding job */
3076:
3077: if (DEBUG(JOB)) {
3078: (void) fprintf(stdout, "JobFlagForMigration(%d) called.\n", hostID);
3079: (void) fflush(stdout);
3080: }
3081: jnode = Lst_Find(jobs, (ClientData)hostID, JobCmpRmtID);
3082:
3083: if (jnode == NILLNODE) {
3084: jnode = Lst_Find(stoppedJobs, (ClientData)hostID, JobCmpRmtID);
3085: if (jnode == NILLNODE) {
3086: if (DEBUG(JOB)) {
3087: Error("Evicting host(%d) not in table", hostID);
3088: }
3089: return;
3090: }
3091: }
3092: job = (Job *) Lst_Datum(jnode);
3093:
3094: if (DEBUG(JOB)) {
3095: (void) fprintf(stdout,
3096: "JobFlagForMigration(%d) found job '%s'.\n", hostID,
3097: job->node->name);
3098: (void) fflush(stdout);
3099: }
3100:
3101: KILL(job->pid, SIGSTOP);
3102:
3103: job->flags |= JOB_REMIGRATE;
3104: }
3105:
3106: #endif
3107:
3108: /*-
3109: *-----------------------------------------------------------------------
3110: * JobRestartJobs --
3111: * Tries to restart stopped jobs if there are slots available.
3112: * Note that this tries to restart them regardless of pending errors.
3113: * It's not good to leave stopped jobs lying around!
3114: *
3115: * Results:
3116: * None.
3117: *
3118: * Side Effects:
3119: * Resumes(and possibly migrates) jobs.
3120: *
3121: *-----------------------------------------------------------------------
3122: */
3123: static void
3124: JobRestartJobs()
3125: {
3126: while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
3127: if (DEBUG(JOB)) {
3128: (void) fprintf(stdout,
3129: "Job queue is not full. Restarting a stopped job.\n");
3130: (void) fflush(stdout);
3131: }
3132: JobRestart((Job *)Lst_DeQueue(stoppedJobs));
3133: }
1.1 deraadt 3134: }
![[BACK]](/icons/back.gif){kind=icon}
Return to job.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / make