Annotation of src/usr.bin/make/job.c, Revision 1.5
1.5 ! briggs 1: /* $OpenBSD: job.c,v 1.4 1996/06/26 05:36:32 deraadt Exp $ */
! 2: /* $NetBSD: job.c,v 1.15 1996/05/29 15:28:05 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
44: static char sccsid[] = "@(#)job.c 5.15 (Berkeley) 3/1/91";
45: #else
1.5 ! briggs 46: static char rcsid[] = "$OpenBSD: job.c,v 1.4 1996/06/26 05:36:32 deraadt 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 <signal.h>
115: #include <stdio.h>
116: #include <string.h>
117: #include <signal.h>
118: #include "make.h"
119: #include "hash.h"
120: #include "dir.h"
121: #include "job.h"
122: #include "pathnames.h"
1.2 deraadt 123: #ifdef REMOTE
124: #include "rmt.h"
125: # define STATIC
126: #else
127: # define STATIC static
128: #endif
1.1 deraadt 129:
130: extern int errno;
131:
132: /*
133: * error handling variables
134: */
135: static int errors = 0; /* number of errors reported */
136: static int aborting = 0; /* why is the make aborting? */
137: #define ABORT_ERROR 1 /* Because of an error */
138: #define ABORT_INTERRUPT 2 /* Because it was interrupted */
139: #define ABORT_WAIT 3 /* Waiting for jobs to finish */
140:
1.2 deraadt 141: /*
142: * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
143: * is a char! So when we go above 127 we turn negative!
144: */
145: #define FILENO(a) ((unsigned) fileno(a))
1.1 deraadt 146:
147: /*
148: * post-make command processing. The node postCommands is really just the
149: * .END target but we keep it around to avoid having to search for it
150: * all the time.
151: */
152: static GNode *postCommands; /* node containing commands to execute when
153: * everything else is done */
154: static int numCommands; /* The number of commands actually printed
155: * for a target. Should this number be
156: * 0, no shell will be executed. */
157:
158: /*
159: * Return values from JobStart.
160: */
161: #define JOB_RUNNING 0 /* Job is running */
162: #define JOB_ERROR 1 /* Error in starting the job */
163: #define JOB_FINISHED 2 /* The job is already finished */
164: #define JOB_STOPPED 3 /* The job is stopped */
165:
166: /*
167: * tfile is the name of a file into which all shell commands are put. It is
168: * used over by removing it before the child shell is executed. The XXXXX in
169: * the string are replaced by the pid of the make process in a 5-character
170: * field with leading zeroes.
171: */
172: static char tfile[] = TMPPAT;
173:
174:
175: /*
176: * Descriptions for various shells.
177: */
178: static Shell shells[] = {
179: /*
180: * CSH description. The csh can do echo control by playing
181: * with the setting of the 'echo' shell variable. Sadly,
182: * however, it is unable to do error control nicely.
183: */
184: {
185: "csh",
186: TRUE, "unset verbose", "set verbose", "unset verbose", 10,
187: FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"",
188: "v", "e",
189: },
190: /*
191: * SH description. Echo control is also possible and, under
192: * sun UNIX anyway, one can even control error checking.
193: */
194: {
195: "sh",
196: TRUE, "set -", "set -v", "set -", 5,
1.2 deraadt 197: TRUE, "set -e", "set +e",
198: #ifdef OLDBOURNESHELL
1.1 deraadt 199: FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
1.2 deraadt 200: #endif
1.1 deraadt 201: "v", "e",
202: },
203: /*
204: * UNKNOWN.
205: */
206: {
1.2 deraadt 207: (char *) 0,
208: FALSE, (char *) 0, (char *) 0, (char *) 0, 0,
209: FALSE, (char *) 0, (char *) 0,
210: (char *) 0, (char *) 0,
1.1 deraadt 211: }
212: };
213: static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
214: * which we pass all
215: * commands in the Makefile.
216: * It is set by the
217: * Job_ParseShell function */
1.2 deraadt 218: static char *shellPath = NULL, /* full pathname of
1.1 deraadt 219: * executable image */
220: *shellName; /* last component of shell */
221:
222:
223: static int maxJobs; /* The most children we can run at once */
224: static int maxLocal; /* The most local ones we can have */
1.2 deraadt 225: STATIC int nJobs; /* The number of children currently running */
226: STATIC int nLocal; /* The number of local children */
227: STATIC Lst jobs; /* The structures that describe them */
228: STATIC Boolean jobFull; /* Flag to tell when the job table is full. It
1.1 deraadt 229: * is set TRUE when (1) the total number of
230: * running jobs equals the maximum allowed or
231: * (2) a job can only be run locally, but
232: * nLocal equals maxLocal */
233: #ifndef RMT_WILL_WATCH
234: static fd_set outputs; /* Set of descriptors of pipes connected to
235: * the output channels of children */
236: #endif
237:
1.2 deraadt 238: STATIC GNode *lastNode; /* The node for which output was most recently
1.1 deraadt 239: * produced. */
1.2 deraadt 240: STATIC char *targFmt; /* Format string to use to head output from a
1.1 deraadt 241: * job when it's not the most-recent job heard
242: * from */
1.2 deraadt 243:
244: #ifdef REMOTE
245: # define TARG_FMT "--- %s at %s ---\n" /* Default format */
246: # define MESSAGE(fp, gn) \
247: (void) fprintf(fp, targFmt, gn->name, gn->rem.hname);
248: #else
249: # define TARG_FMT "--- %s ---\n" /* Default format */
250: # define MESSAGE(fp, gn) \
251: (void) fprintf(fp, targFmt, gn->name);
252: #endif
1.1 deraadt 253:
254: /*
255: * When JobStart attempts to run a job remotely but can't, and isn't allowed
256: * to run the job locally, or when Job_CatchChildren detects a job that has
257: * been migrated home, the job is placed on the stoppedJobs queue to be run
258: * when the next job finishes.
259: */
1.2 deraadt 260: STATIC Lst stoppedJobs; /* Lst of Job structures describing
1.1 deraadt 261: * jobs that were stopped due to concurrency
262: * limits or migration home */
263:
264:
265: #if defined(USE_PGRP) && defined(SYSV)
1.2 deraadt 266: # define KILL(pid, sig) killpg(-(pid), (sig))
1.1 deraadt 267: #else
268: # if defined(USE_PGRP)
1.2 deraadt 269: # define KILL(pid, sig) killpg((pid), (sig))
1.1 deraadt 270: # else
1.2 deraadt 271: # define KILL(pid, sig) kill((pid), (sig))
1.1 deraadt 272: # endif
273: #endif
274:
1.2 deraadt 275: /*
276: * Grmpf... There is no way to set bits of the wait structure
277: * anymore with the stupid W*() macros. I liked the union wait
278: * stuff much more. So, we devise our own macros... This is
279: * really ugly, use dramamine sparingly. You have been warned.
280: */
281: #define W_SETMASKED(st, val, fun) \
282: { \
283: int sh = (int) ~0; \
284: int mask = fun(sh); \
285: \
286: for (sh = 0; ((mask >> sh) & 1) == 0; sh++) \
287: continue; \
288: *(st) = (*(st) & ~mask) | ((val) << sh); \
289: }
290:
291: #define W_SETTERMSIG(st, val) W_SETMASKED(st, val, WTERMSIG)
292: #define W_SETEXITSTATUS(st, val) W_SETMASKED(st, val, WEXITSTATUS)
293:
294:
1.1 deraadt 295: static int JobCondPassSig __P((ClientData, ClientData));
296: static void JobPassSig __P((int));
297: static int JobCmpPid __P((ClientData, ClientData));
298: static int JobPrintCommand __P((ClientData, ClientData));
299: static int JobSaveCommand __P((ClientData, ClientData));
1.2 deraadt 300: static void JobClose __P((Job *));
301: #ifdef REMOTE
302: static int JobCmpRmtID __P((Job *, int));
303: # ifdef RMT_WILL_WATCH
304: static void JobLocalInput __P((int, Job *));
305: # endif
306: #else
307: static void JobFinish __P((Job *, int *));
1.1 deraadt 308: static void JobExec __P((Job *, char **));
1.2 deraadt 309: #endif
1.1 deraadt 310: static void JobMakeArgv __P((Job *, char **));
311: static void JobRestart __P((Job *));
312: static int JobStart __P((GNode *, int, Job *));
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)) {
351: (void) fprintf(stdout,
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.
372: *
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;
1.1 deraadt 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: }
398:
399: /*
400: * Leave gracefully if SIGQUIT, rather than core dumping.
401: */
402: if (signo == SIGQUIT) {
403: Finish(0);
404: }
405:
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: {
1.2 deraadt 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
466: * are equal.
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;
529: Job *job = (Job *) jobp;
530:
1.2 deraadt 531: noSpecials = (noExecute && !(job->node->type & OP_MAKE));
1.1 deraadt 532:
1.2 deraadt 533: if (strcmp(cmd, "...") == 0) {
1.1 deraadt 534: job->node->type |= OP_SAVE_CMDS;
535: if ((job->flags & JOB_IGNDOTS) == 0) {
1.2 deraadt 536: job->tailCmds = Lst_Succ(Lst_Member(job->node->commands,
537: (ClientData)cmd));
538: return(1);
539: }
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: /*
1.2 deraadt 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: }
637:
1.2 deraadt 638: DBPRINTF(cmdTemplate, cmd);
1.1 deraadt 639:
640: if (errOff) {
641: /*
642: * If echoing is already off, there's no point in issuing the
643: * echoOff command. Otherwise we issue it and pretend it was on
644: * for the whole command...
645: */
646: if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
1.2 deraadt 647: DBPRINTF("%s\n", commandShell->echoOff);
1.1 deraadt 648: shutUp = TRUE;
649: }
1.2 deraadt 650: DBPRINTF("%s\n", commandShell->errCheck);
1.1 deraadt 651: }
652: if (shutUp) {
1.2 deraadt 653: DBPRINTF("%s\n", commandShell->echoOn);
1.1 deraadt 654: }
1.2 deraadt 655: return 0;
1.1 deraadt 656: }
657:
658: /*-
659: *-----------------------------------------------------------------------
660: * JobSaveCommand --
661: * Save a command to be executed when everything else is done.
662: * Callback function for JobFinish...
663: *
664: * Results:
665: * Always returns 0
666: *
667: * Side Effects:
668: * The command is tacked onto the end of postCommands's commands list.
669: *
670: *-----------------------------------------------------------------------
671: */
672: static int
1.2 deraadt 673: JobSaveCommand(cmd, gn)
1.1 deraadt 674: ClientData cmd;
675: ClientData gn;
676: {
1.2 deraadt 677: cmd = (ClientData) Var_Subst(NULL, (char *) cmd, (GNode *) gn, FALSE);
678: (void) Lst_AtEnd(postCommands->commands, cmd);
679: return(0);
680: }
681:
682:
683: /*-
684: *-----------------------------------------------------------------------
685: * JobClose --
686: * Called to close both input and output pipes when a job is finished.
687: *
688: * Results:
689: * Nada
690: *
691: * Side Effects:
692: * The file descriptors associated with the job are closed.
693: *
694: *-----------------------------------------------------------------------
695: */
696: static void
697: JobClose(job)
698: Job *job;
699: {
700: if (usePipes) {
701: #ifdef RMT_WILL_WATCH
702: Rmt_Ignore(job->inPipe);
703: #else
704: FD_CLR(job->inPipe, &outputs);
705: #endif
706: if (job->outPipe != job->inPipe) {
707: (void) close(job->outPipe);
708: }
709: JobDoOutput(job, TRUE);
710: (void) close(job->inPipe);
711: } else {
712: (void) close(job->outFd);
713: JobDoOutput(job, TRUE);
714: }
1.1 deraadt 715: }
716:
717: /*-
718: *-----------------------------------------------------------------------
719: * JobFinish --
720: * Do final processing for the given job including updating
721: * parents and starting new jobs as available/necessary. Note
722: * that we pay no attention to the JOB_IGNERR flag here.
723: * This is because when we're called because of a noexecute flag
724: * or something, jstat.w_status is 0 and when called from
725: * Job_CatchChildren, the status is zeroed if it s/b ignored.
726: *
727: * Results:
728: * None
729: *
730: * Side Effects:
731: * Some nodes may be put on the toBeMade queue.
732: * Final commands for the job are placed on postCommands.
733: *
1.2 deraadt 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.
1.2 deraadt 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;
780: /*
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: }
798:
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;
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)) {
851: fprintf(out, "*** Stopped -- signal %d\n", WSTOPSIG(*status));
1.1 deraadt 852: }
853: job->flags |= JOB_RESUME;
854: (void)Lst_AtEnd(stoppedJobs, (ClientData)job);
1.2 deraadt 855: #ifdef REMOTE
856: if (job->flags & JOB_REMIGRATE)
857: JobRestart(job);
858: #endif
859: (void) fflush(out);
1.1 deraadt 860: return;
1.2 deraadt 861: } else if (WTERMSIG(*status) == SIGCONT) {
1.1 deraadt 862: /*
863: * If the beastie has continued, shift the Job from the stopped
1.2 deraadt 864: * list to the running one(or re-stop it if concurrency is
1.1 deraadt 865: * exceeded) and go and get another child.
866: */
867: if (job->flags & (JOB_RESUME|JOB_REMIGRATE|JOB_RESTART)) {
868: if (usePipes && job->node != lastNode) {
1.2 deraadt 869: MESSAGE(out, job->node);
1.1 deraadt 870: lastNode = job->node;
871: }
1.2 deraadt 872: (void) fprintf(out, "*** Continued\n");
1.1 deraadt 873: }
1.2 deraadt 874: if (!(job->flags & JOB_CONTINUING)) {
875: if (DEBUG(JOB)) {
876: (void) fprintf(stdout,
877: "Warning: process %d was not continuing.\n",
878: job->pid);
879: (void) fflush(stdout);
880: }
881: #ifdef notdef
882: /*
883: * We don't really want to restart a job from scratch just
884: * because it continued, especially not without killing the
885: * continuing process! That's why this is ifdef'ed out.
886: * FD - 9/17/90
887: */
1.1 deraadt 888: JobRestart(job);
1.2 deraadt 889: #endif
890: }
891: job->flags &= ~JOB_CONTINUING;
892: Lst_AtEnd(jobs, (ClientData)job);
893: nJobs += 1;
894: if (!(job->flags & JOB_REMOTE)) {
895: if (DEBUG(JOB)) {
896: (void) fprintf(stdout,
897: "Process %d is continuing locally.\n",
898: job->pid);
899: (void) fflush(stdout);
900: }
901: nLocal += 1;
1.1 deraadt 902: }
1.2 deraadt 903: if (nJobs == maxJobs) {
904: jobFull = TRUE;
905: if (DEBUG(JOB)) {
906: (void) fprintf(stdout, "Job queue is full.\n");
907: (void) fflush(stdout);
908: }
909: }
910: (void) fflush(out);
911: return;
1.1 deraadt 912: } else {
913: if (usePipes && job->node != lastNode) {
1.2 deraadt 914: MESSAGE(out, job->node);
1.1 deraadt 915: lastNode = job->node;
916: }
1.2 deraadt 917: (void) fprintf(out, "*** Signal %d\n", WTERMSIG(*status));
1.1 deraadt 918: }
919:
1.2 deraadt 920: (void) fflush(out);
1.1 deraadt 921: }
922:
923: /*
924: * Now handle the -B-mode stuff. If the beast still isn't finished,
925: * try and restart the job on the next command. If JobStart says it's
926: * ok, it's ok. If there's an error, this puppy is done.
927: */
1.2 deraadt 928: if (compatMake && (WIFEXITED(*status) &&
929: !Lst_IsAtEnd(job->node->commands))) {
930: switch (JobStart(job->node, job->flags & JOB_IGNDOTS, job)) {
931: case JOB_RUNNING:
932: done = FALSE;
933: break;
934: case JOB_ERROR:
935: done = TRUE;
936: W_SETEXITSTATUS(status, 1);
937: break;
938: case JOB_FINISHED:
939: /*
940: * If we got back a JOB_FINISHED code, JobStart has already
941: * called Make_Update and freed the job descriptor. We set
942: * done to false here to avoid fake cycles and double frees.
943: * JobStart needs to do the update so we can proceed up the
944: * graph when given the -n flag..
945: */
946: done = FALSE;
947: break;
1.1 deraadt 948: }
949: } else {
950: done = TRUE;
951: }
952:
953:
954: if (done &&
955: (aborting != ABORT_ERROR) &&
956: (aborting != ABORT_INTERRUPT) &&
1.2 deraadt 957: (*status == 0))
1.1 deraadt 958: {
959: /*
960: * As long as we aren't aborting and the job didn't return a non-zero
961: * status that we shouldn't ignore, we call Make_Update to update
962: * the parents. In addition, any saved commands for the node are placed
963: * on the .END target.
964: */
965: if (job->tailCmds != NILLNODE) {
1.2 deraadt 966: Lst_ForEachFrom(job->node->commands, job->tailCmds,
1.1 deraadt 967: JobSaveCommand,
1.2 deraadt 968: (ClientData)job->node);
1.1 deraadt 969: }
970: job->node->made = MADE;
1.2 deraadt 971: Make_Update(job->node);
1.1 deraadt 972: free((Address)job);
1.5 ! briggs 973: } else if (*status != 0) {
1.1 deraadt 974: errors += 1;
975: free((Address)job);
976: }
977:
1.2 deraadt 978: JobRestartJobs();
1.1 deraadt 979:
980: /*
981: * Set aborting if any error.
982: */
983: if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) {
984: /*
985: * If we found any errors in this batch of children and the -k flag
986: * wasn't given, we set the aborting flag so no more jobs get
987: * started.
988: */
989: aborting = ABORT_ERROR;
990: }
991:
992: if ((aborting == ABORT_ERROR) && Job_Empty()) {
993: /*
994: * If we are aborting and the job table is now empty, we finish.
995: */
1.2 deraadt 996: (void) eunlink(tfile);
997: Finish(errors);
1.1 deraadt 998: }
999: }
1000:
1001: /*-
1002: *-----------------------------------------------------------------------
1003: * Job_Touch --
1004: * Touch the given target. Called by JobStart when the -t flag was
1005: * given
1006: *
1007: * Results:
1008: * None
1009: *
1010: * Side Effects:
1011: * The data modification of the file is changed. In addition, if the
1012: * file did not exist, it is created.
1013: *-----------------------------------------------------------------------
1014: */
1015: void
1.2 deraadt 1016: Job_Touch(gn, silent)
1.1 deraadt 1017: GNode *gn; /* the node of the file to touch */
1018: Boolean silent; /* TRUE if should not print messages */
1019: {
1020: int streamID; /* ID of stream opened to do the touch */
1.3 niklas 1021: struct utimbuf times; /* Times for utime() call */
1.1 deraadt 1022:
1023: if (gn->type & (OP_JOIN|OP_USE|OP_EXEC|OP_OPTIONAL)) {
1024: /*
1025: * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
1026: * and, as such, shouldn't really be created.
1027: */
1028: return;
1029: }
1030:
1031: if (!silent) {
1.2 deraadt 1032: (void) fprintf(stdout, "touch %s\n", gn->name);
1033: (void) fflush(stdout);
1.1 deraadt 1034: }
1035:
1036: if (noExecute) {
1037: return;
1038: }
1039:
1040: if (gn->type & OP_ARCHV) {
1.2 deraadt 1041: Arch_Touch(gn);
1.1 deraadt 1042: } else if (gn->type & OP_LIB) {
1.2 deraadt 1043: Arch_TouchLib(gn);
1.1 deraadt 1044: } else {
1045: char *file = gn->path ? gn->path : gn->name;
1046:
1.3 niklas 1047: times.actime = times.modtime = now;
1048: if (utime(file, ×) < 0){
1.2 deraadt 1049: streamID = open(file, O_RDWR | O_CREAT, 0666);
1.1 deraadt 1050:
1051: if (streamID >= 0) {
1052: char c;
1053:
1054: /*
1055: * Read and write a byte to the file to change the
1056: * modification time, then close the file.
1057: */
1058: if (read(streamID, &c, 1) == 1) {
1.2 deraadt 1059: (void) lseek(streamID, 0L, L_SET);
1060: (void) write(streamID, &c, 1);
1.1 deraadt 1061: }
1062:
1.2 deraadt 1063: (void) close(streamID);
1064: } else {
1065: (void) fprintf(stdout, "*** couldn't touch %s: %s",
1066: file, strerror(errno));
1067: (void) fflush(stdout);
1068: }
1.1 deraadt 1069: }
1070: }
1071: }
1072:
1073: /*-
1074: *-----------------------------------------------------------------------
1075: * Job_CheckCommands --
1076: * Make sure the given node has all the commands it needs.
1077: *
1078: * Results:
1079: * TRUE if the commands list is/was ok.
1080: *
1081: * Side Effects:
1082: * The node will have commands from the .DEFAULT rule added to it
1083: * if it needs them.
1084: *-----------------------------------------------------------------------
1085: */
1086: Boolean
1.2 deraadt 1087: Job_CheckCommands(gn, abortProc)
1.1 deraadt 1088: GNode *gn; /* The target whose commands need
1089: * verifying */
1.2 deraadt 1090: void (*abortProc) __P((char *, ...));
1.1 deraadt 1091: /* Function to abort with message */
1092: {
1.2 deraadt 1093: if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
1.1 deraadt 1094: (gn->type & OP_LIB) == 0) {
1095: /*
1096: * No commands. Look for .DEFAULT rule from which we might infer
1097: * commands
1098: */
1099: if ((DEFAULT != NILGNODE) && !Lst_IsEmpty(DEFAULT->commands)) {
1100: char *p1;
1101: /*
1102: * Make only looks for a .DEFAULT if the node was never the
1103: * target of an operator, so that's what we do too. If
1104: * a .DEFAULT was given, we substitute its commands for gn's
1105: * commands and set the IMPSRC variable to be the target's name
1106: * The DEFAULT node acts like a transformation rule, in that
1107: * gn also inherits any attributes or sources attached to
1108: * .DEFAULT itself.
1109: */
1110: Make_HandleUse(DEFAULT, gn);
1.2 deraadt 1111: Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), gn);
1.1 deraadt 1112: if (p1)
1113: free(p1);
1.2 deraadt 1114: } else if (Dir_MTime(gn) == 0) {
1.1 deraadt 1115: /*
1116: * The node wasn't the target of an operator we have no .DEFAULT
1117: * rule to go on and the target doesn't already exist. There's
1118: * nothing more we can do for this branch. If the -k flag wasn't
1119: * given, we stop in our tracks, otherwise we just don't update
1120: * this node's parents so they never get examined.
1121: */
1.2 deraadt 1122: static const char msg[] = "make: don't know how to make";
1123:
1.1 deraadt 1124: if (gn->type & OP_OPTIONAL) {
1.2 deraadt 1125: (void) fprintf(stdout, "%s %s(ignored)\n", msg, gn->name);
1126: (void) fflush(stdout);
1.1 deraadt 1127: } else if (keepgoing) {
1.2 deraadt 1128: (void) fprintf(stdout, "%s %s(continuing)\n", msg, gn->name);
1129: (void) fflush(stdout);
1130: return FALSE;
1.1 deraadt 1131: } else {
1.2 deraadt 1132: (*abortProc)("%s %s. Stop", msg, gn->name);
1133: return FALSE;
1.1 deraadt 1134: }
1135: }
1136: }
1.2 deraadt 1137: return TRUE;
1.1 deraadt 1138: }
1139: #ifdef RMT_WILL_WATCH
1140: /*-
1141: *-----------------------------------------------------------------------
1142: * JobLocalInput --
1143: * Handle a pipe becoming readable. Callback function for Rmt_Watch
1144: *
1145: * Results:
1146: * None
1147: *
1148: * Side Effects:
1149: * JobDoOutput is called.
1150: *
1151: *-----------------------------------------------------------------------
1152: */
1153: /*ARGSUSED*/
1154: static void
1155: JobLocalInput(stream, job)
1.2 deraadt 1156: int stream; /* Stream that's ready(ignored) */
1.1 deraadt 1157: Job *job; /* Job to which the stream belongs */
1158: {
1159: JobDoOutput(job, FALSE);
1160: }
1161: #endif /* RMT_WILL_WATCH */
1162:
1163: /*-
1164: *-----------------------------------------------------------------------
1165: * JobExec --
1166: * Execute the shell for the given job. Called from JobStart and
1167: * JobRestart.
1168: *
1169: * Results:
1170: * None.
1171: *
1172: * Side Effects:
1173: * A shell is executed, outputs is altered and the Job structure added
1174: * to the job table.
1175: *
1176: *-----------------------------------------------------------------------
1177: */
1178: static void
1179: JobExec(job, argv)
1180: Job *job; /* Job to execute */
1181: char **argv;
1182: {
1183: int cpid; /* ID of new child */
1184:
1185: if (DEBUG(JOB)) {
1186: int i;
1187:
1.2 deraadt 1188: (void) fprintf(stdout, "Running %s %sly\n", job->node->name,
1189: job->flags&JOB_REMOTE?"remote":"local");
1190: (void) fprintf(stdout, "\tCommand: ");
1191: for (i = 0; argv[i] != NULL; i++) {
1192: (void) fprintf(stdout, "%s ", argv[i]);
1.1 deraadt 1193: }
1.2 deraadt 1194: (void) fprintf(stdout, "\n");
1195: (void) fflush(stdout);
1.1 deraadt 1196: }
1197:
1198: /*
1199: * Some jobs produce no output and it's disconcerting to have
1.2 deraadt 1200: * no feedback of their running(since they produce no output, the
1.1 deraadt 1201: * banner with their name in it never appears). This is an attempt to
1202: * provide that feedback, even if nothing follows it.
1203: */
1204: if ((lastNode != job->node) && (job->flags & JOB_FIRST) &&
1.2 deraadt 1205: !(job->flags & JOB_SILENT)) {
1206: MESSAGE(stdout, job->node);
1.1 deraadt 1207: lastNode = job->node;
1208: }
1209:
1210: #ifdef RMT_NO_EXEC
1211: if (job->flags & JOB_REMOTE) {
1212: goto jobExecFinish;
1213: }
1214: #endif /* RMT_NO_EXEC */
1215:
1.2 deraadt 1216: if ((cpid = vfork()) == -1) {
1217: Punt("Cannot fork");
1.1 deraadt 1218: } else if (cpid == 0) {
1219:
1220: /*
1221: * Must duplicate the input stream down to the child's input and
1.2 deraadt 1222: * reset it to the beginning(again). Since the stream was marked
1.1 deraadt 1223: * close-on-exec, we must clear that bit in the new input.
1224: */
1.2 deraadt 1225: if (dup2(FILENO(job->cmdFILE), 0) == -1)
1226: Punt("Cannot dup2: %s", strerror(errno));
1227: (void) fcntl(0, F_SETFD, 0);
1228: (void) lseek(0, 0, L_SET);
1.1 deraadt 1229:
1230: if (usePipes) {
1231: /*
1232: * Set up the child's output to be routed through the pipe
1233: * we've created for it.
1234: */
1.2 deraadt 1235: if (dup2(job->outPipe, 1) == -1)
1236: Punt("Cannot dup2: %s", strerror(errno));
1.1 deraadt 1237: } else {
1238: /*
1239: * We're capturing output in a file, so we duplicate the
1240: * descriptor to the temporary file into the standard
1241: * output.
1242: */
1.2 deraadt 1243: if (dup2(job->outFd, 1) == -1)
1244: Punt("Cannot dup2: %s", strerror(errno));
1.1 deraadt 1245: }
1246: /*
1247: * The output channels are marked close on exec. This bit was
1.2 deraadt 1248: * duplicated by the dup2(on some systems), so we have to clear
1.1 deraadt 1249: * it before routing the shell's error output to the same place as
1250: * its standard output.
1251: */
1.2 deraadt 1252: (void) fcntl(1, F_SETFD, 0);
1253: if (dup2(1, 2) == -1)
1254: Punt("Cannot dup2: %s", strerror(errno));
1.1 deraadt 1255:
1256: #ifdef USE_PGRP
1257: /*
1258: * We want to switch the child into a different process family so
1259: * we can kill it and all its descendants in one fell swoop,
1260: * by killing its process family, but not commit suicide.
1261: */
1.2 deraadt 1262: # if defined(SYSV)
1263: (void) setsid();
1264: # else
1265: (void) setpgid(0, getpid());
1266: # endif
1267: #endif /* USE_PGRP */
1.1 deraadt 1268:
1.2 deraadt 1269: #ifdef REMOTE
1270: if (job->flags & JOB_REMOTE) {
1271: Rmt_Exec(shellPath, argv, FALSE);
1272: } else
1273: #endif /* REMOTE */
1274: (void) execv(shellPath, argv);
1275:
1276: (void) write(2, "Could not execute shell\n",
1277: sizeof("Could not execute shell"));
1278: _exit(1);
1.1 deraadt 1279: } else {
1.2 deraadt 1280: #ifdef REMOTE
1281: long omask = sigblock(sigmask(SIGCHLD));
1282: #endif
1.1 deraadt 1283: job->pid = cpid;
1284:
1285: if (usePipes && (job->flags & JOB_FIRST) ) {
1286: /*
1287: * The first time a job is run for a node, we set the current
1288: * position in the buffer to the beginning and mark another
1289: * stream to watch in the outputs mask
1290: */
1291: job->curPos = 0;
1292:
1293: #ifdef RMT_WILL_WATCH
1294: Rmt_Watch(job->inPipe, JobLocalInput, job);
1295: #else
1296: FD_SET(job->inPipe, &outputs);
1297: #endif /* RMT_WILL_WATCH */
1298: }
1299:
1300: if (job->flags & JOB_REMOTE) {
1.2 deraadt 1301: #ifndef REMOTE
1.1 deraadt 1302: job->rmtID = 0;
1.2 deraadt 1303: #else
1304: job->rmtID = Rmt_LastID(job->pid);
1305: #endif /* REMOTE */
1.1 deraadt 1306: } else {
1307: nLocal += 1;
1308: /*
1.2 deraadt 1309: * XXX: Used to not happen if REMOTE. Why?
1.1 deraadt 1310: */
1.2 deraadt 1311: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1312: (void) fclose(job->cmdFILE);
1.1 deraadt 1313: job->cmdFILE = NULL;
1314: }
1315: }
1.2 deraadt 1316: #ifdef REMOTE
1317: (void) sigsetmask(omask);
1318: #endif
1.1 deraadt 1319: }
1320:
1321: #ifdef RMT_NO_EXEC
1322: jobExecFinish:
1323: #endif
1324: /*
1325: * Now the job is actually running, add it to the table.
1326: */
1327: nJobs += 1;
1.2 deraadt 1328: (void) Lst_AtEnd(jobs, (ClientData)job);
1.1 deraadt 1329: if (nJobs == maxJobs) {
1330: jobFull = TRUE;
1331: }
1332: }
1333:
1334: /*-
1335: *-----------------------------------------------------------------------
1336: * JobMakeArgv --
1337: * Create the argv needed to execute the shell for a given job.
1338: *
1339: *
1340: * Results:
1341: *
1342: * Side Effects:
1343: *
1344: *-----------------------------------------------------------------------
1345: */
1346: static void
1347: JobMakeArgv(job, argv)
1348: Job *job;
1349: char **argv;
1350: {
1351: int argc;
1352: static char args[10]; /* For merged arguments */
1353:
1354: argv[0] = shellName;
1355: argc = 1;
1356:
1357: if ((commandShell->exit && (*commandShell->exit != '-')) ||
1358: (commandShell->echo && (*commandShell->echo != '-')))
1359: {
1360: /*
1361: * At least one of the flags doesn't have a minus before it, so
1362: * merge them together. Have to do this because the *(&(@*#*&#$#
1363: * Bourne shell thinks its second argument is a file to source.
1364: * Grrrr. Note the ten-character limitation on the combined arguments.
1365: */
1366: (void)sprintf(args, "-%s%s",
1367: ((job->flags & JOB_IGNERR) ? "" :
1368: (commandShell->exit ? commandShell->exit : "")),
1369: ((job->flags & JOB_SILENT) ? "" :
1370: (commandShell->echo ? commandShell->echo : "")));
1371:
1372: if (args[1]) {
1373: argv[argc] = args;
1374: argc++;
1375: }
1376: } else {
1377: if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
1378: argv[argc] = commandShell->exit;
1379: argc++;
1380: }
1381: if (!(job->flags & JOB_SILENT) && commandShell->echo) {
1382: argv[argc] = commandShell->echo;
1383: argc++;
1384: }
1385: }
1.2 deraadt 1386: argv[argc] = NULL;
1.1 deraadt 1387: }
1388:
1389: /*-
1390: *-----------------------------------------------------------------------
1391: * JobRestart --
1392: * Restart a job that stopped for some reason.
1393: *
1394: * Results:
1395: * None.
1396: *
1397: * Side Effects:
1398: * jobFull will be set if the job couldn't be run.
1399: *
1400: *-----------------------------------------------------------------------
1401: */
1402: static void
1403: JobRestart(job)
1404: Job *job; /* Job to restart */
1405: {
1.2 deraadt 1406: #ifdef REMOTE
1407: int host;
1408: #endif
1409:
1.1 deraadt 1410: if (job->flags & JOB_REMIGRATE) {
1.2 deraadt 1411: if (
1412: #ifdef REMOTE
1413: verboseRemigrates ||
1414: #endif
1415: DEBUG(JOB)) {
1416: (void) fprintf(stdout, "*** remigrating %x(%s)\n",
1417: job->pid, job->node->name);
1418: (void) fflush(stdout);
1.1 deraadt 1419: }
1.2 deraadt 1420:
1421: #ifdef REMOTE
1422: if (!Rmt_ReExport(job->pid, job->node, &host)) {
1423: if (verboseRemigrates || DEBUG(JOB)) {
1424: (void) fprintf(stdout, "*** couldn't migrate...\n");
1425: (void) fflush(stdout);
1426: }
1427: #endif
1428: if (nLocal != maxLocal) {
1.1 deraadt 1429: /*
1430: * Job cannot be remigrated, but there's room on the local
1431: * machine, so resume the job and note that another
1432: * local job has started.
1433: */
1.2 deraadt 1434: if (
1435: #ifdef REMOTE
1436: verboseRemigrates ||
1437: #endif
1438: DEBUG(JOB)) {
1439: (void) fprintf(stdout, "*** resuming on local machine\n");
1440: (void) fflush(stdout);
1441: }
1.1 deraadt 1442: KILL(job->pid, SIGCONT);
1443: nLocal +=1;
1.2 deraadt 1444: #ifdef REMOTE
1445: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME|JOB_REMOTE);
1446: job->flags |= JOB_CONTINUING;
1447: #else
1.1 deraadt 1448: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1.2 deraadt 1449: #endif
1.1 deraadt 1450: } else {
1451: /*
1452: * Job cannot be restarted. Mark the table as full and
1453: * place the job back on the list of stopped jobs.
1454: */
1.2 deraadt 1455: if (
1456: #ifdef REMOTE
1457: verboseRemigrates ||
1458: #endif
1459: DEBUG(JOB)) {
1460: (void) fprintf(stdout, "*** holding\n");
1461: (void) fflush(stdout);
1462: }
1.1 deraadt 1463: (void)Lst_AtFront(stoppedJobs, (ClientData)job);
1464: jobFull = TRUE;
1465: if (DEBUG(JOB)) {
1.2 deraadt 1466: (void) fprintf(stdout, "Job queue is full.\n");
1467: (void) fflush(stdout);
1.1 deraadt 1468: }
1469: return;
1.2 deraadt 1470: }
1471: #ifdef REMOTE
1472: } else {
1473: /*
1474: * Clear out the remigrate and resume flags. Set the continuing
1475: * flag so we know later on that the process isn't exiting just
1476: * because of a signal.
1477: */
1478: job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
1479: job->flags |= JOB_CONTINUING;
1480: job->rmtID = host;
1.1 deraadt 1481: }
1.2 deraadt 1482: #endif
1.1 deraadt 1483:
1484: (void)Lst_AtEnd(jobs, (ClientData)job);
1485: nJobs += 1;
1486: if (nJobs == maxJobs) {
1487: jobFull = TRUE;
1488: if (DEBUG(JOB)) {
1.2 deraadt 1489: (void) fprintf(stdout, "Job queue is full.\n");
1490: (void) fflush(stdout);
1.1 deraadt 1491: }
1492: }
1493: } else if (job->flags & JOB_RESTART) {
1494: /*
1495: * Set up the control arguments to the shell. This is based on the
1496: * flags set earlier for this job. If the JOB_IGNERR flag is clear,
1497: * the 'exit' flag of the commandShell is used to cause it to exit
1498: * upon receiving an error. If the JOB_SILENT flag is clear, the
1499: * 'echo' flag of the commandShell is used to get it to start echoing
1500: * as soon as it starts processing commands.
1501: */
1502: char *argv[4];
1503:
1504: JobMakeArgv(job, argv);
1.2 deraadt 1505:
1.1 deraadt 1506: if (DEBUG(JOB)) {
1.2 deraadt 1507: (void) fprintf(stdout, "Restarting %s...", job->node->name);
1508: (void) fflush(stdout);
1.1 deraadt 1509: }
1.2 deraadt 1510: #ifdef REMOTE
1511: if ((job->node->type&OP_NOEXPORT) ||
1512: (nLocal < maxLocal && runLocalFirst)
1513: # ifdef RMT_NO_EXEC
1514: || !Rmt_Export(shellPath, argv, job)
1515: # else
1516: || !Rmt_Begin(shellPath, argv, job->node)
1517: # endif
1518: #endif
1519: {
1520: if (((nLocal >= maxLocal) && !(job->flags & JOB_SPECIAL))) {
1.1 deraadt 1521: /*
1522: * Can't be exported and not allowed to run locally -- put it
1523: * back on the hold queue and mark the table full
1524: */
1525: if (DEBUG(JOB)) {
1.2 deraadt 1526: (void) fprintf(stdout, "holding\n");
1527: (void) fflush(stdout);
1.1 deraadt 1528: }
1529: (void)Lst_AtFront(stoppedJobs, (ClientData)job);
1530: jobFull = TRUE;
1531: if (DEBUG(JOB)) {
1.2 deraadt 1532: (void) fprintf(stdout, "Job queue is full.\n");
1533: (void) fflush(stdout);
1.1 deraadt 1534: }
1535: return;
1.2 deraadt 1536: } else {
1.1 deraadt 1537: /*
1538: * Job may be run locally.
1539: */
1540: if (DEBUG(JOB)) {
1.2 deraadt 1541: (void) fprintf(stdout, "running locally\n");
1542: (void) fflush(stdout);
1.1 deraadt 1543: }
1544: job->flags &= ~JOB_REMOTE;
1.2 deraadt 1545: }
1546: }
1547: #ifdef REMOTE
1548: else {
1549: /*
1550: * Can be exported. Hooray!
1551: */
1552: if (DEBUG(JOB)) {
1553: (void) fprintf(stdout, "exporting\n");
1554: (void) fflush(stdout);
1555: }
1556: job->flags |= JOB_REMOTE;
1.1 deraadt 1557: }
1.2 deraadt 1558: #endif
1.1 deraadt 1559: JobExec(job, argv);
1560: } else {
1561: /*
1562: * The job has stopped and needs to be restarted. Why it stopped,
1563: * we don't know...
1564: */
1565: if (DEBUG(JOB)) {
1.2 deraadt 1566: (void) fprintf(stdout, "Resuming %s...", job->node->name);
1567: (void) fflush(stdout);
1.1 deraadt 1568: }
1569: if (((job->flags & JOB_REMOTE) ||
1.2 deraadt 1570: (nLocal < maxLocal) ||
1571: #ifdef REMOTE
1572: (((job->flags & JOB_SPECIAL) &&
1573: (job->node->type & OP_NOEXPORT)) &&
1574: (maxLocal == 0))) &&
1575: #else
1576: ((job->flags & JOB_SPECIAL) &&
1577: (maxLocal == 0))) &&
1578: #endif
1579: (nJobs != maxJobs))
1.1 deraadt 1580: {
1581: /*
1582: * If the job is remote, it's ok to resume it as long as the
1583: * maximum concurrency won't be exceeded. If it's local and
1.2 deraadt 1584: * we haven't reached the local concurrency limit already(or the
1.1 deraadt 1585: * job must be run locally and maxLocal is 0), it's also ok to
1586: * resume it.
1587: */
1588: Boolean error;
1589: extern int errno;
1.2 deraadt 1590: int status;
1.1 deraadt 1591:
1592: #ifdef RMT_WANTS_SIGNALS
1593: if (job->flags & JOB_REMOTE) {
1594: error = !Rmt_Signal(job, SIGCONT);
1595: } else
1596: #endif /* RMT_WANTS_SIGNALS */
1597: error = (KILL(job->pid, SIGCONT) != 0);
1598:
1599: if (!error) {
1600: /*
1601: * Make sure the user knows we've continued the beast and
1602: * actually put the thing in the job table.
1603: */
1604: job->flags |= JOB_CONTINUING;
1.2 deraadt 1605: W_SETTERMSIG(&status, SIGCONT);
1606: JobFinish(job, &status);
1.1 deraadt 1607:
1608: job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
1609: if (DEBUG(JOB)) {
1.2 deraadt 1610: (void) fprintf(stdout, "done\n");
1611: (void) fflush(stdout);
1.1 deraadt 1612: }
1613: } else {
1614: Error("couldn't resume %s: %s",
1615: job->node->name, strerror(errno));
1.2 deraadt 1616: status = 0;
1617: W_SETEXITSTATUS(&status, 1);
1618: JobFinish(job, &status);
1.1 deraadt 1619: }
1620: } else {
1621: /*
1622: * Job cannot be restarted. Mark the table as full and
1623: * place the job back on the list of stopped jobs.
1624: */
1625: if (DEBUG(JOB)) {
1.2 deraadt 1626: (void) fprintf(stdout, "table full\n");
1627: (void) fflush(stdout);
1.1 deraadt 1628: }
1.2 deraadt 1629: (void) Lst_AtFront(stoppedJobs, (ClientData)job);
1.1 deraadt 1630: jobFull = TRUE;
1631: if (DEBUG(JOB)) {
1.2 deraadt 1632: (void) fprintf(stdout, "Job queue is full.\n");
1633: (void) fflush(stdout);
1.1 deraadt 1634: }
1635: }
1636: }
1637: }
1638:
1639: /*-
1640: *-----------------------------------------------------------------------
1641: * JobStart --
1642: * Start a target-creation process going for the target described
1643: * by the graph node gn.
1644: *
1645: * Results:
1646: * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1647: * if there isn't actually anything left to do for the job and
1648: * JOB_RUNNING if the job has been started.
1649: *
1650: * Side Effects:
1651: * A new Job node is created and added to the list of running
1652: * jobs. PMake is forked and a child shell created.
1653: *-----------------------------------------------------------------------
1654: */
1655: static int
1.2 deraadt 1656: JobStart(gn, flags, previous)
1.1 deraadt 1657: GNode *gn; /* target to create */
1658: int flags; /* flags for the job to override normal ones.
1659: * e.g. JOB_SPECIAL or JOB_IGNDOTS */
1660: Job *previous; /* The previous Job structure for this node,
1661: * if any. */
1662: {
1663: register Job *job; /* new job descriptor */
1664: char *argv[4]; /* Argument vector to shell */
1665: static int jobno = 0; /* job number of catching output in a file */
1666: Boolean cmdsOK; /* true if the nodes commands were all right */
1667: Boolean local; /* Set true if the job was run locally */
1668: Boolean noExec; /* Set true if we decide not to run the job */
1669:
1.2 deraadt 1670: if (previous != NULL) {
1671: previous->flags &= ~(JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
1.1 deraadt 1672: job = previous;
1673: } else {
1.2 deraadt 1674: job = (Job *) emalloc(sizeof(Job));
1675: if (job == NULL) {
1.1 deraadt 1676: Punt("JobStart out of memory");
1677: }
1678: flags |= JOB_FIRST;
1679: }
1680:
1681: job->node = gn;
1682: job->tailCmds = NILLNODE;
1683:
1684: /*
1685: * Set the initial value of the flags for this job based on the global
1686: * ones and the node's attributes... Any flags supplied by the caller
1687: * are also added to the field.
1688: */
1689: job->flags = 0;
1.2 deraadt 1690: if (Targ_Ignore(gn)) {
1.1 deraadt 1691: job->flags |= JOB_IGNERR;
1692: }
1.2 deraadt 1693: if (Targ_Silent(gn)) {
1.1 deraadt 1694: job->flags |= JOB_SILENT;
1695: }
1696: job->flags |= flags;
1697:
1698: /*
1699: * Check the commands now so any attributes from .DEFAULT have a chance
1700: * to migrate to the node
1701: */
1.2 deraadt 1702: if (!compatMake && job->flags & JOB_FIRST) {
1.1 deraadt 1703: cmdsOK = Job_CheckCommands(gn, Error);
1704: } else {
1705: cmdsOK = TRUE;
1706: }
1707:
1708: /*
1.2 deraadt 1709: * If the -n flag wasn't given, we open up OUR(not the child's)
1.1 deraadt 1710: * temporary file to stuff commands in it. The thing is rd/wr so we don't
1711: * need to reopen it to feed it to the shell. If the -n flag *was* given,
1712: * we just set the file to be stdout. Cute, huh?
1713: */
1714: if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) {
1715: /*
1716: * We're serious here, but if the commands were bogus, we're
1717: * also dead...
1718: */
1719: if (!cmdsOK) {
1720: DieHorribly();
1721: }
1722:
1.2 deraadt 1723: job->cmdFILE = fopen(tfile, "w+");
1724: if (job->cmdFILE == NULL) {
1725: Punt("Could not open %s", tfile);
1.1 deraadt 1726: }
1.2 deraadt 1727: (void) fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
1.1 deraadt 1728: /*
1729: * Send the commands to the command file, flush all its buffers then
1730: * rewind and remove the thing.
1731: */
1732: noExec = FALSE;
1733:
1734: /*
1735: * used to be backwards; replace when start doing multiple commands
1736: * per shell.
1737: */
1738: if (compatMake) {
1739: /*
1740: * Be compatible: If this is the first time for this node,
1741: * verify its commands are ok and open the commands list for
1742: * sequential access by later invocations of JobStart.
1743: * Once that is done, we take the next command off the list
1744: * and print it to the command file. If the command was an
1745: * ellipsis, note that there's nothing more to execute.
1746: */
1747: if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){
1748: cmdsOK = FALSE;
1749: } else {
1.2 deraadt 1750: LstNode ln = Lst_Next(gn->commands);
1.1 deraadt 1751:
1752: if ((ln == NILLNODE) ||
1.2 deraadt 1753: JobPrintCommand((ClientData) Lst_Datum(ln),
1754: (ClientData) job))
1.1 deraadt 1755: {
1756: noExec = TRUE;
1.2 deraadt 1757: Lst_Close(gn->commands);
1.1 deraadt 1758: }
1759: if (noExec && !(job->flags & JOB_FIRST)) {
1760: /*
1761: * If we're not going to execute anything, the job
1762: * is done and we need to close down the various
1763: * file descriptors we've opened for output, then
1764: * call JobDoOutput to catch the final characters or
1765: * send the file to the screen... Note that the i/o streams
1766: * are only open if this isn't the first job.
1767: * Note also that this could not be done in
1768: * Job_CatchChildren b/c it wasn't clear if there were
1769: * more commands to execute or not...
1770: */
1.2 deraadt 1771: JobClose(job);
1.1 deraadt 1772: }
1773: }
1774: } else {
1775: /*
1776: * We can do all the commands at once. hooray for sanity
1777: */
1778: numCommands = 0;
1.2 deraadt 1779: Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
1.1 deraadt 1780:
1781: /*
1782: * If we didn't print out any commands to the shell script,
1783: * there's not much point in executing the shell, is there?
1784: */
1785: if (numCommands == 0) {
1786: noExec = TRUE;
1787: }
1788: }
1789: } else if (noExecute) {
1790: /*
1791: * Not executing anything -- just print all the commands to stdout
1792: * in one fell swoop. This will still set up job->tailCmds correctly.
1793: */
1794: if (lastNode != gn) {
1.2 deraadt 1795: MESSAGE(stdout, gn);
1.1 deraadt 1796: lastNode = gn;
1797: }
1798: job->cmdFILE = stdout;
1799: /*
1800: * Only print the commands if they're ok, but don't die if they're
1801: * not -- just let the user know they're bad and keep going. It
1802: * doesn't do any harm in this case and may do some good.
1803: */
1804: if (cmdsOK) {
1805: Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job);
1806: }
1807: /*
1808: * Don't execute the shell, thank you.
1809: */
1810: noExec = TRUE;
1811: } else {
1812: /*
1813: * Just touch the target and note that no shell should be executed.
1814: * Set cmdFILE to stdout to make life easier. Check the commands, too,
1815: * but don't die if they're no good -- it does no harm to keep working
1816: * up the graph.
1817: */
1818: job->cmdFILE = stdout;
1.2 deraadt 1819: Job_Touch(gn, job->flags&JOB_SILENT);
1.1 deraadt 1820: noExec = TRUE;
1821: }
1822:
1823: /*
1824: * If we're not supposed to execute a shell, don't.
1825: */
1826: if (noExec) {
1827: /*
1828: * Unlink and close the command file if we opened one
1829: */
1830: if (job->cmdFILE != stdout) {
1.2 deraadt 1831: (void) eunlink(tfile);
1832: if (job->cmdFILE != NULL)
1833: (void) fclose(job->cmdFILE);
1.1 deraadt 1834: } else {
1.2 deraadt 1835: (void) fflush(stdout);
1.1 deraadt 1836: }
1837:
1838: /*
1839: * We only want to work our way up the graph if we aren't here because
1840: * the commands for the job were no good.
1841: */
1842: if (cmdsOK) {
1843: if (aborting == 0) {
1844: if (job->tailCmds != NILLNODE) {
1845: Lst_ForEachFrom(job->node->commands, job->tailCmds,
1846: JobSaveCommand,
1.2 deraadt 1847: (ClientData)job->node);
1.1 deraadt 1848: }
1849: Make_Update(job->node);
1850: }
1851: free((Address)job);
1852: return(JOB_FINISHED);
1853: } else {
1854: free((Address)job);
1855: return(JOB_ERROR);
1856: }
1857: } else {
1.2 deraadt 1858: (void) fflush(job->cmdFILE);
1859: (void) eunlink(tfile);
1.1 deraadt 1860: }
1861:
1862: /*
1863: * Set up the control arguments to the shell. This is based on the flags
1864: * set earlier for this job.
1865: */
1866: JobMakeArgv(job, argv);
1867:
1868: /*
1869: * If we're using pipes to catch output, create the pipe by which we'll
1870: * get the shell's output. If we're using files, print out that we're
1871: * starting a job and then set up its temporary-file name. This is just
1872: * tfile with two extra digits tacked on -- jobno.
1873: */
1.2 deraadt 1874: if (!compatMake || (job->flags & JOB_FIRST)) {
1.1 deraadt 1875: if (usePipes) {
1876: int fd[2];
1.2 deraadt 1877: if (pipe(fd) == -1)
1878: Punt("Cannot create pipe: %s", strerror(errno));
1.1 deraadt 1879: job->inPipe = fd[0];
1880: job->outPipe = fd[1];
1.2 deraadt 1881: (void) fcntl(job->inPipe, F_SETFD, 1);
1882: (void) fcntl(job->outPipe, F_SETFD, 1);
1.1 deraadt 1883: } else {
1.2 deraadt 1884: (void) fprintf(stdout, "Remaking `%s'\n", gn->name);
1885: (void) fflush(stdout);
1886: sprintf(job->outFile, "%s%02d", tfile, jobno);
1.1 deraadt 1887: jobno = (jobno + 1) % 100;
1888: job->outFd = open(job->outFile,O_WRONLY|O_CREAT|O_APPEND,0600);
1.2 deraadt 1889: (void) fcntl(job->outFd, F_SETFD, 1);
1.1 deraadt 1890: }
1891: }
1892:
1.2 deraadt 1893: #ifdef REMOTE
1894: if (!(gn->type & OP_NOEXPORT) && !(runLocalFirst && nLocal < maxLocal)) {
1895: #ifdef RMT_NO_EXEC
1896: local = !Rmt_Export(shellPath, argv, job);
1897: #else
1898: local = !Rmt_Begin(shellPath, argv, job->node);
1899: #endif /* RMT_NO_EXEC */
1900: if (!local) {
1901: job->flags |= JOB_REMOTE;
1902: }
1903: } else
1904: #endif
1905: local = TRUE;
1.1 deraadt 1906:
1907: if (local && (((nLocal >= maxLocal) &&
1.2 deraadt 1908: !(job->flags & JOB_SPECIAL) &&
1909: #ifdef REMOTE
1910: (!(gn->type & OP_NOEXPORT) || (maxLocal != 0))
1911: #else
1912: (maxLocal != 0)
1913: #endif
1914: )))
1.1 deraadt 1915: {
1916: /*
1917: * The job can only be run locally, but we've hit the limit of
1918: * local concurrency, so put the job on hold until some other job
1.2 deraadt 1919: * finishes. Note that the special jobs(.BEGIN, .INTERRUPT and .END)
1.1 deraadt 1920: * may be run locally even when the local limit has been reached
1.2 deraadt 1921: *(e.g. when maxLocal == 0), though they will be exported if at
1922: * all possible. In addition, any target marked with .NOEXPORT will
1923: * be run locally if maxLocal is 0.
1.1 deraadt 1924: */
1925: jobFull = TRUE;
1926:
1927: if (DEBUG(JOB)) {
1.2 deraadt 1928: (void) fprintf(stdout, "Can only run job locally.\n");
1929: (void) fflush(stdout);
1.1 deraadt 1930: }
1931: job->flags |= JOB_RESTART;
1.2 deraadt 1932: (void) Lst_AtEnd(stoppedJobs, (ClientData)job);
1.1 deraadt 1933: } else {
1934: if ((nLocal >= maxLocal) && local) {
1935: /*
1.2 deraadt 1936: * If we're running this job locally as a special case(see above),
1.1 deraadt 1937: * at least say the table is full.
1938: */
1939: jobFull = TRUE;
1940: if (DEBUG(JOB)) {
1.2 deraadt 1941: (void) fprintf(stdout, "Local job queue is full.\n");
1942: (void) fflush(stdout);
1.1 deraadt 1943: }
1944: }
1945: JobExec(job, argv);
1946: }
1947: return(JOB_RUNNING);
1948: }
1949:
1.2 deraadt 1950: static char *
1951: JobOutput(job, cp, endp, msg)
1952: register Job *job;
1953: register char *cp, *endp;
1954: int msg;
1955: {
1956: register char *ecp;
1957:
1958: if (commandShell->noPrint) {
1959: ecp = Str_FindSubstring(cp, commandShell->noPrint);
1960: while (ecp != NULL) {
1961: if (cp != ecp) {
1962: *ecp = '\0';
1963: if (msg && job->node != lastNode) {
1964: MESSAGE(stdout, job->node);
1965: lastNode = job->node;
1966: }
1967: /*
1968: * The only way there wouldn't be a newline after
1969: * this line is if it were the last in the buffer.
1970: * however, since the non-printable comes after it,
1971: * there must be a newline, so we don't print one.
1972: */
1973: (void) fprintf(stdout, "%s", cp);
1974: (void) fflush(stdout);
1975: }
1976: cp = ecp + commandShell->noPLen;
1977: if (cp != endp) {
1978: /*
1979: * Still more to print, look again after skipping
1980: * the whitespace following the non-printable
1981: * command....
1982: */
1983: cp++;
1984: while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
1985: cp++;
1986: }
1987: ecp = Str_FindSubstring(cp, commandShell->noPrint);
1988: } else {
1989: return cp;
1990: }
1991: }
1992: }
1993: return cp;
1994: }
1995:
1.1 deraadt 1996: /*-
1997: *-----------------------------------------------------------------------
1998: * JobDoOutput --
1999: * This function is called at different times depending on
2000: * whether the user has specified that output is to be collected
2001: * via pipes or temporary files. In the former case, we are called
2002: * whenever there is something to read on the pipe. We collect more
2003: * output from the given job and store it in the job's outBuf. If
2004: * this makes up a line, we print it tagged by the job's identifier,
2005: * as necessary.
2006: * If output has been collected in a temporary file, we open the
2007: * file and read it line by line, transfering it to our own
2008: * output channel until the file is empty. At which point we
2009: * remove the temporary file.
2010: * In both cases, however, we keep our figurative eye out for the
2011: * 'noPrint' line for the shell from which the output came. If
2012: * we recognize a line, we don't print it. If the command is not
1.2 deraadt 2013: * alone on the line(the character after it is not \0 or \n), we
1.1 deraadt 2014: * do print whatever follows it.
2015: *
2016: * Results:
2017: * None
2018: *
2019: * Side Effects:
2020: * curPos may be shifted as may the contents of outBuf.
2021: *-----------------------------------------------------------------------
2022: */
1.2 deraadt 2023: STATIC void
2024: JobDoOutput(job, finish)
1.1 deraadt 2025: register Job *job; /* the job whose output needs printing */
2026: Boolean finish; /* TRUE if this is the last time we'll be
2027: * called for this job */
2028: {
2029: Boolean gotNL = FALSE; /* true if got a newline */
1.2 deraadt 2030: Boolean fbuf; /* true if our buffer filled up */
1.1 deraadt 2031: register int nr; /* number of bytes read */
2032: register int i; /* auxiliary index into outBuf */
1.2 deraadt 2033: register int max; /* limit for i(end of current data) */
2034: int nRead; /*(Temporary) number of bytes read */
1.1 deraadt 2035:
2036: FILE *oFILE; /* Stream pointer to shell's output file */
2037: char inLine[132];
2038:
2039:
2040: if (usePipes) {
2041: /*
2042: * Read as many bytes as will fit in the buffer.
2043: */
2044: end_loop:
1.2 deraadt 2045: gotNL = FALSE;
2046: fbuf = FALSE;
1.1 deraadt 2047:
1.2 deraadt 2048: nRead = read(job->inPipe, &job->outBuf[job->curPos],
1.1 deraadt 2049: JOB_BUFSIZE - job->curPos);
2050: if (nRead < 0) {
2051: if (DEBUG(JOB)) {
2052: perror("JobDoOutput(piperead)");
2053: }
2054: nr = 0;
2055: } else {
2056: nr = nRead;
2057: }
2058:
2059: /*
1.2 deraadt 2060: * If we hit the end-of-file(the job is dead), we must flush its
1.1 deraadt 2061: * remaining output, so pretend we read a newline if there's any
2062: * output remaining in the buffer.
2063: * Also clear the 'finish' flag so we stop looping.
2064: */
2065: if ((nr == 0) && (job->curPos != 0)) {
2066: job->outBuf[job->curPos] = '\n';
2067: nr = 1;
2068: finish = FALSE;
2069: } else if (nr == 0) {
2070: finish = FALSE;
2071: }
2072:
2073: /*
2074: * Look for the last newline in the bytes we just got. If there is
2075: * one, break out of the loop with 'i' as its index and gotNL set
2076: * TRUE.
2077: */
2078: max = job->curPos + nr;
2079: for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
2080: if (job->outBuf[i] == '\n') {
2081: gotNL = TRUE;
2082: break;
2083: } else if (job->outBuf[i] == '\0') {
2084: /*
2085: * Why?
2086: */
2087: job->outBuf[i] = ' ';
2088: }
2089: }
2090:
2091: if (!gotNL) {
2092: job->curPos += nr;
2093: if (job->curPos == JOB_BUFSIZE) {
2094: /*
2095: * If we've run out of buffer space, we have no choice
2096: * but to print the stuff. sigh.
2097: */
1.2 deraadt 2098: fbuf = TRUE;
1.1 deraadt 2099: i = job->curPos;
2100: }
2101: }
1.2 deraadt 2102: if (gotNL || fbuf) {
1.1 deraadt 2103: /*
2104: * Need to send the output to the screen. Null terminate it
2105: * first, overwriting the newline character if there was one.
1.2 deraadt 2106: * So long as the line isn't one we should filter(according
1.1 deraadt 2107: * to the shell description), we print the line, preceeded
2108: * by a target banner if this target isn't the same as the
2109: * one for which we last printed something.
2110: * The rest of the data in the buffer are then shifted down
2111: * to the start of the buffer and curPos is set accordingly.
2112: */
2113: job->outBuf[i] = '\0';
2114: if (i >= job->curPos) {
1.2 deraadt 2115: char *cp;
2116:
2117: cp = JobOutput(job, job->outBuf, &job->outBuf[i]);
1.1 deraadt 2118:
2119: /*
2120: * There's still more in that thar buffer. This time, though,
2121: * we know there's no newline at the end, so we add one of
2122: * our own free will.
2123: */
2124: if (*cp != '\0') {
2125: if (job->node != lastNode) {
1.2 deraadt 2126: MESSAGE(stdout, job->node);
1.1 deraadt 2127: lastNode = job->node;
2128: }
1.2 deraadt 2129: (void) fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
2130: (void) fflush(stdout);
1.1 deraadt 2131: }
2132: }
2133: if (i < max - 1) {
2134: /* shift the remaining characters down */
1.2 deraadt 2135: (void) memcpy(job->outBuf, &job->outBuf[i + 1], max -(i + 1));
2136: job->curPos = max -(i + 1);
1.1 deraadt 2137:
2138: } else {
2139: /*
2140: * We have written everything out, so we just start over
2141: * from the start of the buffer. No copying. No nothing.
2142: */
2143: job->curPos = 0;
2144: }
2145: }
2146: if (finish) {
2147: /*
2148: * If the finish flag is true, we must loop until we hit
2149: * end-of-file on the pipe. This is guaranteed to happen eventually
1.2 deraadt 2150: * since the other end of the pipe is now closed(we closed it
1.1 deraadt 2151: * explicitly and the child has exited). When we do get an EOF,
2152: * finish will be set FALSE and we'll fall through and out.
2153: */
2154: goto end_loop;
2155: }
2156: } else {
2157: /*
2158: * We've been called to retrieve the output of the job from the
2159: * temporary file where it's been squirreled away. This consists of
2160: * opening the file, reading the output line by line, being sure not
2161: * to print the noPrint line for the shell we used, then close and
2162: * remove the temporary file. Very simple.
2163: *
2164: * Change to read in blocks and do FindSubString type things as for
2165: * pipes? That would allow for "@echo -n..."
2166: */
1.2 deraadt 2167: oFILE = fopen(job->outFile, "r");
2168: if (oFILE != NULL) {
2169: (void) fprintf(stdout, "Results of making %s:\n", job->node->name);
2170: (void) fflush(stdout);
2171: while (fgets(inLine, sizeof(inLine), oFILE) != NULL) {
2172: register char *cp, *endp, *oendp;
1.1 deraadt 2173:
2174: cp = inLine;
1.2 deraadt 2175: oendp = endp = inLine + strlen(inLine);
1.1 deraadt 2176: if (endp[-1] == '\n') {
2177: *--endp = '\0';
2178: }
1.2 deraadt 2179: cp = JobOutput(job, inLine, endp, FALSE);
1.1 deraadt 2180:
2181: /*
2182: * There's still more in that thar buffer. This time, though,
2183: * we know there's no newline at the end, so we add one of
2184: * our own free will.
2185: */
1.2 deraadt 2186: (void) fprintf(stdout, "%s", cp);
2187: (void) fflush(stdout);
2188: if (endp != oendp) {
2189: (void) fprintf(stdout, "\n");
2190: (void) fflush(stdout);
1.1 deraadt 2191: }
2192: }
1.2 deraadt 2193: (void) fclose(oFILE);
2194: (void) eunlink(job->outFile);
1.1 deraadt 2195: }
2196: }
2197: }
2198:
2199: /*-
2200: *-----------------------------------------------------------------------
2201: * Job_CatchChildren --
2202: * Handle the exit of a child. Called from Make_Make.
2203: *
2204: * Results:
2205: * none.
2206: *
2207: * Side Effects:
2208: * The job descriptor is removed from the list of children.
2209: *
2210: * Notes:
2211: * We do waits, blocking or not, according to the wisdom of our
2212: * caller, until there are no more children to report. For each
2213: * job, call JobFinish to finish things off. This will take care of
2214: * putting jobs on the stoppedJobs queue.
2215: *
2216: *-----------------------------------------------------------------------
2217: */
2218: void
1.2 deraadt 2219: Job_CatchChildren(block)
1.1 deraadt 2220: Boolean block; /* TRUE if should block on the wait. */
2221: {
2222: int pid; /* pid of dead child */
2223: register Job *job; /* job descriptor for dead child */
2224: LstNode jnode; /* list element for finding job */
1.2 deraadt 2225: int status; /* Exit/termination status */
1.1 deraadt 2226:
2227: /*
2228: * Don't even bother if we know there's no one around.
2229: */
2230: if (nLocal == 0) {
2231: return;
2232: }
2233:
1.2 deraadt 2234: while ((pid = waitpid((pid_t) -1, &status,
2235: (block?0:WNOHANG)|WUNTRACED)) > 0)
1.1 deraadt 2236: {
1.2 deraadt 2237: if (DEBUG(JOB)) {
2238: (void) fprintf(stdout, "Process %d exited or stopped.\n", pid);
2239: (void) fflush(stdout);
2240: }
1.1 deraadt 2241:
2242:
1.2 deraadt 2243: jnode = Lst_Find(jobs, (ClientData)&pid, JobCmpPid);
1.1 deraadt 2244:
2245: if (jnode == NILLNODE) {
1.2 deraadt 2246: if (WIFSIGNALED(status) && (WTERMSIG(status) == SIGCONT)) {
1.1 deraadt 2247: jnode = Lst_Find(stoppedJobs, (ClientData) &pid, JobCmpPid);
2248: if (jnode == NILLNODE) {
1.2 deraadt 2249: Error("Resumed child(%d) not in table", pid);
1.1 deraadt 2250: continue;
2251: }
2252: job = (Job *)Lst_Datum(jnode);
1.2 deraadt 2253: (void) Lst_Remove(stoppedJobs, jnode);
1.1 deraadt 2254: } else {
1.2 deraadt 2255: Error("Child(%d) not in table?", pid);
1.1 deraadt 2256: continue;
2257: }
2258: } else {
1.2 deraadt 2259: job = (Job *) Lst_Datum(jnode);
2260: (void) Lst_Remove(jobs, jnode);
1.1 deraadt 2261: nJobs -= 1;
2262: if (jobFull && DEBUG(JOB)) {
1.2 deraadt 2263: (void) fprintf(stdout, "Job queue is no longer full.\n");
2264: (void) fflush(stdout);
1.1 deraadt 2265: }
2266: jobFull = FALSE;
1.2 deraadt 2267: #ifdef REMOTE
2268: if (!(job->flags & JOB_REMOTE)) {
2269: if (DEBUG(JOB)) {
2270: (void) fprintf(stdout,
2271: "Job queue has one fewer local process.\n");
2272: (void) fflush(stdout);
2273: }
2274: nLocal -= 1;
2275: }
2276: #else
1.1 deraadt 2277: nLocal -= 1;
1.2 deraadt 2278: #endif
1.1 deraadt 2279: }
2280:
1.2 deraadt 2281: JobFinish(job, &status);
1.1 deraadt 2282: }
2283: }
2284:
2285: /*-
2286: *-----------------------------------------------------------------------
2287: * Job_CatchOutput --
2288: * Catch the output from our children, if we're using
2289: * pipes do so. Otherwise just block time until we get a
1.2 deraadt 2290: * signal(most likely a SIGCHLD) since there's no point in
1.1 deraadt 2291: * just spinning when there's nothing to do and the reaping
2292: * of a child can wait for a while.
2293: *
2294: * Results:
2295: * None
2296: *
2297: * Side Effects:
2298: * Output is read from pipes if we're piping.
2299: * -----------------------------------------------------------------------
2300: */
2301: void
1.2 deraadt 2302: Job_CatchOutput()
1.1 deraadt 2303: {
2304: int nfds;
2305: struct timeval timeout;
2306: fd_set readfds;
2307: register LstNode ln;
2308: register Job *job;
2309: #ifdef RMT_WILL_WATCH
2310: int pnJobs; /* Previous nJobs */
2311: #endif
2312:
1.2 deraadt 2313: (void) fflush(stdout);
1.1 deraadt 2314: #ifdef RMT_WILL_WATCH
2315: pnJobs = nJobs;
2316:
2317: /*
2318: * It is possible for us to be called with nJobs equal to 0. This happens
2319: * if all the jobs finish and a job that is stopped cannot be run
2320: * locally (eg if maxLocal is 0) and cannot be exported. The job will
2321: * be placed back on the stoppedJobs queue, Job_Empty() will return false,
2322: * Make_Run will call us again when there's nothing for which to wait.
2323: * nJobs never changes, so we loop forever. Hence the check. It could
2324: * be argued that we should sleep for a bit so as not to swamp the
2325: * exportation system with requests. Perhaps we should.
2326: *
2327: * NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren
2328: * IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT.
2329: * It may use the variable nLocal to determine if it needs to call
1.2 deraadt 2330: * Job_CatchChildren(if nLocal is 0, there's nothing for which to
1.1 deraadt 2331: * wait...)
2332: */
2333: while (nJobs != 0 && pnJobs == nJobs) {
2334: Rmt_Wait();
2335: }
2336: #else
2337: if (usePipes) {
2338: readfds = outputs;
2339: timeout.tv_sec = SEL_SEC;
2340: timeout.tv_usec = SEL_USEC;
2341:
1.2 deraadt 2342: if ((nfds = select(FD_SETSIZE, &readfds, (fd_set *) 0,
2343: (fd_set *) 0, &timeout)) <= 0)
1.1 deraadt 2344: return;
1.2 deraadt 2345: else {
2346: if (Lst_Open(jobs) == FAILURE) {
2347: Punt("Cannot open job table");
1.1 deraadt 2348: }
1.2 deraadt 2349: while (nfds && (ln = Lst_Next(jobs)) != NILLNODE) {
2350: job = (Job *) Lst_Datum(ln);
1.1 deraadt 2351: if (FD_ISSET(job->inPipe, &readfds)) {
1.2 deraadt 2352: JobDoOutput(job, FALSE);
1.1 deraadt 2353: nfds -= 1;
2354: }
2355: }
1.2 deraadt 2356: Lst_Close(jobs);
1.1 deraadt 2357: }
2358: }
2359: #endif /* RMT_WILL_WATCH */
2360: }
2361:
2362: /*-
2363: *-----------------------------------------------------------------------
2364: * Job_Make --
2365: * Start the creation of a target. Basically a front-end for
2366: * JobStart used by the Make module.
2367: *
2368: * Results:
2369: * None.
2370: *
2371: * Side Effects:
2372: * Another job is started.
2373: *
2374: *-----------------------------------------------------------------------
2375: */
2376: void
1.2 deraadt 2377: Job_Make(gn)
1.1 deraadt 2378: GNode *gn;
2379: {
1.2 deraadt 2380: (void) JobStart(gn, 0, NULL);
1.1 deraadt 2381: }
2382:
2383: /*-
2384: *-----------------------------------------------------------------------
2385: * Job_Init --
2386: * Initialize the process module
2387: *
2388: * Results:
2389: * none
2390: *
2391: * Side Effects:
2392: * lists and counters are initialized
2393: *-----------------------------------------------------------------------
2394: */
2395: void
1.2 deraadt 2396: Job_Init(maxproc, maxlocal)
1.1 deraadt 2397: int maxproc; /* the greatest number of jobs which may be
2398: * running at one time */
2399: int maxlocal; /* the greatest number of local jobs which may
2400: * be running at once. */
2401: {
2402: GNode *begin; /* node for commands to do at the very start */
2403:
1.2 deraadt 2404: (void) sprintf(tfile, "/tmp/make%05d", getpid());
1.1 deraadt 2405:
1.2 deraadt 2406: jobs = Lst_Init(FALSE);
1.1 deraadt 2407: stoppedJobs = Lst_Init(FALSE);
2408: maxJobs = maxproc;
2409: maxLocal = maxlocal;
2410: nJobs = 0;
2411: nLocal = 0;
2412: jobFull = FALSE;
2413:
2414: aborting = 0;
2415: errors = 0;
2416:
2417: lastNode = NILGNODE;
2418:
1.2 deraadt 2419: if (maxJobs == 1
2420: #ifdef REMOTE
2421: || noMessages
2422: #endif
2423: ) {
1.1 deraadt 2424: /*
2425: * If only one job can run at a time, there's no need for a banner,
2426: * no is there?
2427: */
2428: targFmt = "";
2429: } else {
2430: targFmt = TARG_FMT;
2431: }
2432:
1.2 deraadt 2433: if (shellPath == NULL) {
1.1 deraadt 2434: /*
2435: * The user didn't specify a shell to use, so we are using the
2436: * default one... Both the absolute path and the last component
2437: * must be set. The last component is taken from the 'name' field
2438: * of the default shell description pointed-to by commandShell.
2439: * All default shells are located in _PATH_DEFSHELLDIR.
2440: */
2441: shellName = commandShell->name;
1.2 deraadt 2442: shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
1.1 deraadt 2443: }
2444:
1.2 deraadt 2445: if (commandShell->exit == NULL) {
1.1 deraadt 2446: commandShell->exit = "";
2447: }
1.2 deraadt 2448: if (commandShell->echo == NULL) {
1.1 deraadt 2449: commandShell->echo = "";
2450: }
2451:
2452: /*
2453: * Catch the four signals that POSIX specifies if they aren't ignored.
2454: * JobPassSig will take care of calling JobInterrupt if appropriate.
2455: */
1.2 deraadt 2456: if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
2457: (void) signal(SIGINT, JobPassSig);
1.1 deraadt 2458: }
1.2 deraadt 2459: if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
2460: (void) signal(SIGHUP, JobPassSig);
1.1 deraadt 2461: }
1.2 deraadt 2462: if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
2463: (void) signal(SIGQUIT, JobPassSig);
1.1 deraadt 2464: }
1.2 deraadt 2465: if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
2466: (void) signal(SIGTERM, JobPassSig);
1.1 deraadt 2467: }
2468: /*
2469: * There are additional signals that need to be caught and passed if
2470: * either the export system wants to be told directly of signals or if
1.2 deraadt 2471: * we're giving each job its own process group(since then it won't get
1.1 deraadt 2472: * signals from the terminal driver as we own the terminal)
2473: */
2474: #if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
1.2 deraadt 2475: if (signal(SIGTSTP, SIG_IGN) != SIG_IGN) {
2476: (void) signal(SIGTSTP, JobPassSig);
1.1 deraadt 2477: }
1.2 deraadt 2478: if (signal(SIGTTOU, SIG_IGN) != SIG_IGN) {
2479: (void) signal(SIGTTOU, JobPassSig);
1.1 deraadt 2480: }
1.2 deraadt 2481: if (signal(SIGTTIN, SIG_IGN) != SIG_IGN) {
2482: (void) signal(SIGTTIN, JobPassSig);
1.1 deraadt 2483: }
1.2 deraadt 2484: if (signal(SIGWINCH, SIG_IGN) != SIG_IGN) {
2485: (void) signal(SIGWINCH, JobPassSig);
1.1 deraadt 2486: }
2487: #endif
2488:
1.2 deraadt 2489: begin = Targ_FindNode(".BEGIN", TARG_NOCREATE);
1.1 deraadt 2490:
2491: if (begin != NILGNODE) {
1.2 deraadt 2492: JobStart(begin, JOB_SPECIAL, (Job *)0);
1.1 deraadt 2493: while (nJobs) {
2494: Job_CatchOutput();
2495: #ifndef RMT_WILL_WATCH
1.2 deraadt 2496: Job_CatchChildren(!usePipes);
1.1 deraadt 2497: #endif /* RMT_WILL_WATCH */
2498: }
2499: }
1.2 deraadt 2500: postCommands = Targ_FindNode(".END", TARG_CREATE);
1.1 deraadt 2501: }
2502:
2503: /*-
2504: *-----------------------------------------------------------------------
2505: * Job_Full --
2506: * See if the job table is full. It is considered full if it is OR
2507: * if we are in the process of aborting OR if we have
2508: * reached/exceeded our local quota. This prevents any more jobs
2509: * from starting up.
2510: *
2511: * Results:
2512: * TRUE if the job table is full, FALSE otherwise
2513: * Side Effects:
2514: * None.
2515: *-----------------------------------------------------------------------
2516: */
2517: Boolean
1.2 deraadt 2518: Job_Full()
1.1 deraadt 2519: {
1.2 deraadt 2520: return(aborting || jobFull);
1.1 deraadt 2521: }
2522:
2523: /*-
2524: *-----------------------------------------------------------------------
2525: * Job_Empty --
2526: * See if the job table is empty. Because the local concurrency may
2527: * be set to 0, it is possible for the job table to become empty,
2528: * while the list of stoppedJobs remains non-empty. In such a case,
2529: * we want to restart as many jobs as we can.
2530: *
2531: * Results:
2532: * TRUE if it is. FALSE if it ain't.
2533: *
2534: * Side Effects:
2535: * None.
2536: *
2537: * -----------------------------------------------------------------------
2538: */
2539: Boolean
1.2 deraadt 2540: Job_Empty()
1.1 deraadt 2541: {
2542: if (nJobs == 0) {
2543: if (!Lst_IsEmpty(stoppedJobs) && !aborting) {
2544: /*
2545: * The job table is obviously not full if it has no jobs in
2546: * it...Try and restart the stopped jobs.
2547: */
2548: jobFull = FALSE;
1.2 deraadt 2549: JobRestartJobs();
1.1 deraadt 2550: return(FALSE);
2551: } else {
2552: return(TRUE);
2553: }
2554: } else {
2555: return(FALSE);
2556: }
2557: }
2558:
2559: /*-
2560: *-----------------------------------------------------------------------
2561: * JobMatchShell --
2562: * Find a matching shell in 'shells' given its final component.
2563: *
2564: * Results:
2565: * A pointer to the Shell structure.
2566: *
2567: * Side Effects:
2568: * None.
2569: *
2570: *-----------------------------------------------------------------------
2571: */
2572: static Shell *
1.2 deraadt 2573: JobMatchShell(name)
1.1 deraadt 2574: char *name; /* Final component of shell path */
2575: {
2576: register Shell *sh; /* Pointer into shells table */
2577: Shell *match; /* Longest-matching shell */
2578: register char *cp1,
2579: *cp2;
2580: char *eoname;
2581:
1.2 deraadt 2582: eoname = name + strlen(name);
1.1 deraadt 2583:
1.2 deraadt 2584: match = NULL;
1.1 deraadt 2585:
2586: for (sh = shells; sh->name != NULL; sh++) {
1.2 deraadt 2587: for (cp1 = eoname - strlen(sh->name), cp2 = sh->name;
1.1 deraadt 2588: *cp1 != '\0' && *cp1 == *cp2;
2589: cp1++, cp2++) {
2590: continue;
2591: }
2592: if (*cp1 != *cp2) {
2593: continue;
1.2 deraadt 2594: } else if (match == NULL || strlen(match->name) < strlen(sh->name)) {
2595: match = sh;
1.1 deraadt 2596: }
2597: }
1.2 deraadt 2598: return(match == NULL ? sh : match);
1.1 deraadt 2599: }
2600:
2601: /*-
2602: *-----------------------------------------------------------------------
2603: * Job_ParseShell --
2604: * Parse a shell specification and set up commandShell, shellPath
2605: * and shellName appropriately.
2606: *
2607: * Results:
2608: * FAILURE if the specification was incorrect.
2609: *
2610: * Side Effects:
2611: * commandShell points to a Shell structure (either predefined or
2612: * created from the shell spec), shellPath is the full path of the
2613: * shell described by commandShell, while shellName is just the
2614: * final component of shellPath.
2615: *
2616: * Notes:
2617: * A shell specification consists of a .SHELL target, with dependency
2618: * operator, followed by a series of blank-separated words. Double
2619: * quotes can be used to use blanks in words. A backslash escapes
2620: * anything (most notably a double-quote and a space) and
2621: * provides the functionality it does in C. Each word consists of
2622: * keyword and value separated by an equal sign. There should be no
2623: * unnecessary spaces in the word. The keywords are as follows:
2624: * name Name of shell.
2625: * path Location of shell. Overrides "name" if given
2626: * quiet Command to turn off echoing.
2627: * echo Command to turn echoing on
2628: * filter Result of turning off echoing that shouldn't be
2629: * printed.
2630: * echoFlag Flag to turn echoing on at the start
2631: * errFlag Flag to turn error checking on at the start
2632: * hasErrCtl True if shell has error checking control
2633: * check Command to turn on error checking if hasErrCtl
2634: * is TRUE or template of command to echo a command
2635: * for which error checking is off if hasErrCtl is
2636: * FALSE.
2637: * ignore Command to turn off error checking if hasErrCtl
2638: * is TRUE or template of command to execute a
2639: * command so as to ignore any errors it returns if
2640: * hasErrCtl is FALSE.
2641: *
2642: *-----------------------------------------------------------------------
2643: */
2644: ReturnStatus
1.2 deraadt 2645: Job_ParseShell(line)
1.1 deraadt 2646: char *line; /* The shell spec */
2647: {
2648: char **words;
2649: int wordCount;
2650: register char **argv;
2651: register int argc;
2652: char *path;
2653: Shell newShell;
2654: Boolean fullSpec = FALSE;
2655:
1.2 deraadt 2656: while (isspace(*line)) {
1.1 deraadt 2657: line++;
2658: }
1.2 deraadt 2659: words = brk_string(line, &wordCount, TRUE);
1.1 deraadt 2660:
1.2 deraadt 2661: memset((Address)&newShell, 0, sizeof(newShell));
1.1 deraadt 2662:
2663: /*
2664: * Parse the specification by keyword
2665: */
1.2 deraadt 2666: for (path = NULL, argc = wordCount - 1, argv = words + 1;
1.1 deraadt 2667: argc != 0;
2668: argc--, argv++) {
1.2 deraadt 2669: if (strncmp(*argv, "path=", 5) == 0) {
1.1 deraadt 2670: path = &argv[0][5];
1.2 deraadt 2671: } else if (strncmp(*argv, "name=", 5) == 0) {
1.1 deraadt 2672: newShell.name = &argv[0][5];
2673: } else {
1.2 deraadt 2674: if (strncmp(*argv, "quiet=", 6) == 0) {
1.1 deraadt 2675: newShell.echoOff = &argv[0][6];
1.2 deraadt 2676: } else if (strncmp(*argv, "echo=", 5) == 0) {
1.1 deraadt 2677: newShell.echoOn = &argv[0][5];
1.2 deraadt 2678: } else if (strncmp(*argv, "filter=", 7) == 0) {
1.1 deraadt 2679: newShell.noPrint = &argv[0][7];
2680: newShell.noPLen = strlen(newShell.noPrint);
1.2 deraadt 2681: } else if (strncmp(*argv, "echoFlag=", 9) == 0) {
1.1 deraadt 2682: newShell.echo = &argv[0][9];
1.2 deraadt 2683: } else if (strncmp(*argv, "errFlag=", 8) == 0) {
1.1 deraadt 2684: newShell.exit = &argv[0][8];
1.2 deraadt 2685: } else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
1.1 deraadt 2686: char c = argv[0][10];
2687: newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
1.2 deraadt 2688: (c != 'T') && (c != 't'));
2689: } else if (strncmp(*argv, "check=", 6) == 0) {
1.1 deraadt 2690: newShell.errCheck = &argv[0][6];
1.2 deraadt 2691: } else if (strncmp(*argv, "ignore=", 7) == 0) {
1.1 deraadt 2692: newShell.ignErr = &argv[0][7];
2693: } else {
1.2 deraadt 2694: Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
1.1 deraadt 2695: *argv);
1.2 deraadt 2696: return(FAILURE);
1.1 deraadt 2697: }
2698: fullSpec = TRUE;
2699: }
2700: }
2701:
1.2 deraadt 2702: if (path == NULL) {
1.1 deraadt 2703: /*
2704: * If no path was given, the user wants one of the pre-defined shells,
2705: * yes? So we find the one s/he wants with the help of JobMatchShell
2706: * and set things up the right way. shellPath will be set up by
2707: * Job_Init.
2708: */
1.2 deraadt 2709: if (newShell.name == NULL) {
2710: Parse_Error(PARSE_FATAL, "Neither path nor name specified");
2711: return(FAILURE);
1.1 deraadt 2712: } else {
1.2 deraadt 2713: commandShell = JobMatchShell(newShell.name);
1.1 deraadt 2714: shellName = newShell.name;
2715: }
2716: } else {
2717: /*
1.2 deraadt 2718: * The user provided a path. If s/he gave nothing else(fullSpec is
1.1 deraadt 2719: * FALSE), try and find a matching shell in the ones we know of.
2720: * Else we just take the specification at its word and copy it
2721: * to a new location. In either case, we need to record the
2722: * path the user gave for the shell.
2723: */
2724: shellPath = path;
1.2 deraadt 2725: path = strrchr(path, '/');
2726: if (path == NULL) {
1.1 deraadt 2727: path = shellPath;
2728: } else {
2729: path += 1;
2730: }
1.2 deraadt 2731: if (newShell.name != NULL) {
1.1 deraadt 2732: shellName = newShell.name;
2733: } else {
2734: shellName = path;
2735: }
2736: if (!fullSpec) {
1.2 deraadt 2737: commandShell = JobMatchShell(shellName);
1.1 deraadt 2738: } else {
2739: commandShell = (Shell *) emalloc(sizeof(Shell));
2740: *commandShell = newShell;
2741: }
2742: }
2743:
2744: if (commandShell->echoOn && commandShell->echoOff) {
2745: commandShell->hasEchoCtl = TRUE;
2746: }
2747:
2748: if (!commandShell->hasErrCtl) {
1.2 deraadt 2749: if (commandShell->errCheck == NULL) {
1.1 deraadt 2750: commandShell->errCheck = "";
2751: }
1.2 deraadt 2752: if (commandShell->ignErr == NULL) {
1.1 deraadt 2753: commandShell->ignErr = "%s\n";
2754: }
2755: }
2756:
2757: /*
2758: * Do not free up the words themselves, since they might be in use by the
2759: * shell specification...
2760: */
1.2 deraadt 2761: free(words);
1.1 deraadt 2762: return SUCCESS;
2763: }
2764:
2765: /*-
2766: *-----------------------------------------------------------------------
2767: * JobInterrupt --
2768: * Handle the receipt of an interrupt.
2769: *
2770: * Results:
2771: * None
2772: *
2773: * Side Effects:
2774: * All children are killed. Another job will be started if the
2775: * .INTERRUPT target was given.
2776: *-----------------------------------------------------------------------
2777: */
2778: static void
1.2 deraadt 2779: JobInterrupt(runINTERRUPT, signo)
1.1 deraadt 2780: int runINTERRUPT; /* Non-zero if commands for the .INTERRUPT
2781: * target should be executed */
1.2 deraadt 2782: int signo; /* signal received */
1.1 deraadt 2783: {
2784: LstNode ln; /* element in job table */
2785: Job *job; /* job descriptor in that element */
2786: GNode *interrupt; /* the node describing the .INTERRUPT target */
2787:
2788: aborting = ABORT_INTERRUPT;
2789:
1.2 deraadt 2790: (void) Lst_Open(jobs);
2791: while ((ln = Lst_Next(jobs)) != NILLNODE) {
2792: job = (Job *) Lst_Datum(ln);
1.1 deraadt 2793:
1.2 deraadt 2794: if (!Targ_Precious(job->node)) {
2795: char *file = (job->node->path == NULL ?
1.1 deraadt 2796: job->node->name :
2797: job->node->path);
1.2 deraadt 2798: if (!noExecute && eunlink(file) != -1) {
2799: Error("*** %s removed", file);
1.1 deraadt 2800: }
2801: }
2802: #ifdef RMT_WANTS_SIGNALS
2803: if (job->flags & JOB_REMOTE) {
2804: /*
2805: * If job is remote, let the Rmt module do the killing.
2806: */
1.2 deraadt 2807: if (!Rmt_Signal(job, signo)) {
1.1 deraadt 2808: /*
2809: * If couldn't kill the thing, finish it out now with an
2810: * error code, since no exit report will come in likely.
2811: */
1.2 deraadt 2812: int status;
1.1 deraadt 2813:
2814: status.w_status = 0;
2815: status.w_retcode = 1;
1.2 deraadt 2816: JobFinish(job, &status);
1.1 deraadt 2817: }
2818: } else if (job->pid) {
1.2 deraadt 2819: KILL(job->pid, signo);
1.1 deraadt 2820: }
2821: #else
2822: if (job->pid) {
1.2 deraadt 2823: if (DEBUG(JOB)) {
2824: (void) fprintf(stdout,
2825: "JobInterrupt passing signal to child %d.\n",
2826: job->pid);
2827: (void) fflush(stdout);
2828: }
2829: KILL(job->pid, signo);
2830: }
2831: #endif /* RMT_WANTS_SIGNALS */
2832: }
2833:
2834: #ifdef REMOTE
2835: (void)Lst_Open(stoppedJobs);
2836: while ((ln = Lst_Next(stoppedJobs)) != NILLNODE) {
2837: job = (Job *) Lst_Datum(ln);
2838:
2839: if (job->flags & JOB_RESTART) {
2840: if (DEBUG(JOB)) {
2841: (void) fprintf(stdout, "%s%s",
2842: "JobInterrupt skipping job on stopped queue",
2843: "-- it was waiting to be restarted.\n");
2844: (void) fflush(stdout);
2845: }
2846: continue;
2847: }
2848: if (!Targ_Precious(job->node)) {
2849: char *file = (job->node->path == NULL ?
2850: job->node->name :
2851: job->node->path);
2852: if (eunlink(file) == 0) {
2853: Error("*** %s removed", file);
2854: }
2855: }
2856: /*
2857: * Resume the thing so it will take the signal.
2858: */
2859: if (DEBUG(JOB)) {
2860: (void) fprintf(stdout,
2861: "JobInterrupt passing CONT to stopped child %d.\n",
2862: job->pid);
2863: (void) fflush(stdout);
2864: }
2865: KILL(job->pid, SIGCONT);
2866: #ifdef RMT_WANTS_SIGNALS
2867: if (job->flags & JOB_REMOTE) {
2868: /*
2869: * If job is remote, let the Rmt module do the killing.
2870: */
2871: if (!Rmt_Signal(job, SIGINT)) {
2872: /*
2873: * If couldn't kill the thing, finish it out now with an
2874: * error code, since no exit report will come in likely.
2875: */
2876: int status;
2877: status.w_status = 0;
2878: status.w_retcode = 1;
2879: JobFinish(job, &status);
2880: }
2881: } else if (job->pid) {
2882: if (DEBUG(JOB)) {
2883: (void) fprintf(stdout,
2884: "JobInterrupt passing interrupt to stopped child %d.\n",
2885: job->pid);
2886: (void) fflush(stdout);
2887: }
1.1 deraadt 2888: KILL(job->pid, SIGINT);
2889: }
2890: #endif /* RMT_WANTS_SIGNALS */
2891: }
1.2 deraadt 2892: #endif
2893: Lst_Close(stoppedJobs);
1.1 deraadt 2894:
2895: if (runINTERRUPT && !touchFlag) {
1.2 deraadt 2896: interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
1.1 deraadt 2897: if (interrupt != NILGNODE) {
2898: ignoreErrors = FALSE;
2899:
1.2 deraadt 2900: JobStart(interrupt, JOB_IGNDOTS, (Job *)0);
1.1 deraadt 2901: while (nJobs) {
2902: Job_CatchOutput();
2903: #ifndef RMT_WILL_WATCH
1.2 deraadt 2904: Job_CatchChildren(!usePipes);
1.1 deraadt 2905: #endif /* RMT_WILL_WATCH */
2906: }
2907: }
2908: }
1.2 deraadt 2909: (void) eunlink(tfile);
2910: exit(signo);
1.1 deraadt 2911: }
2912:
2913: /*
2914: *-----------------------------------------------------------------------
2915: * Job_End --
2916: * Do final processing such as the running of the commands
2917: * attached to the .END target.
2918: *
2919: * Results:
2920: * Number of errors reported.
2921: *
2922: * Side Effects:
1.2 deraadt 2923: * The process' temporary file(tfile) is removed if it still
1.1 deraadt 2924: * existed.
2925: *-----------------------------------------------------------------------
2926: */
2927: int
1.2 deraadt 2928: Job_End()
1.1 deraadt 2929: {
1.2 deraadt 2930: if (postCommands != NILGNODE && !Lst_IsEmpty(postCommands->commands)) {
1.1 deraadt 2931: if (errors) {
1.2 deraadt 2932: Error("Errors reported so .END ignored");
1.1 deraadt 2933: } else {
1.2 deraadt 2934: JobStart(postCommands, JOB_SPECIAL | JOB_IGNDOTS, NULL);
1.1 deraadt 2935:
2936: while (nJobs) {
2937: Job_CatchOutput();
2938: #ifndef RMT_WILL_WATCH
1.2 deraadt 2939: Job_CatchChildren(!usePipes);
1.1 deraadt 2940: #endif /* RMT_WILL_WATCH */
2941: }
2942: }
2943: }
1.2 deraadt 2944: (void) eunlink(tfile);
1.1 deraadt 2945: return(errors);
2946: }
2947:
2948: /*-
2949: *-----------------------------------------------------------------------
2950: * Job_Wait --
2951: * Waits for all running jobs to finish and returns. Sets 'aborting'
2952: * to ABORT_WAIT to prevent other jobs from starting.
2953: *
2954: * Results:
2955: * None.
2956: *
2957: * Side Effects:
2958: * Currently running jobs finish.
2959: *
2960: *-----------------------------------------------------------------------
2961: */
2962: void
2963: Job_Wait()
2964: {
2965: aborting = ABORT_WAIT;
2966: while (nJobs != 0) {
2967: Job_CatchOutput();
2968: #ifndef RMT_WILL_WATCH
2969: Job_CatchChildren(!usePipes);
2970: #endif /* RMT_WILL_WATCH */
2971: }
2972: aborting = 0;
2973: }
2974:
2975: /*-
2976: *-----------------------------------------------------------------------
2977: * Job_AbortAll --
2978: * Abort all currently running jobs without handling output or anything.
2979: * This function is to be called only in the event of a major
2980: * error. Most definitely NOT to be called from JobInterrupt.
2981: *
2982: * Results:
2983: * None
2984: *
2985: * Side Effects:
2986: * All children are killed, not just the firstborn
2987: *-----------------------------------------------------------------------
2988: */
2989: void
1.2 deraadt 2990: Job_AbortAll()
1.1 deraadt 2991: {
1.2 deraadt 2992: LstNode ln; /* element in job table */
1.1 deraadt 2993: Job *job; /* the job descriptor in that element */
2994: int foo;
2995:
2996: aborting = ABORT_ERROR;
2997:
2998: if (nJobs) {
2999:
1.2 deraadt 3000: (void) Lst_Open(jobs);
3001: while ((ln = Lst_Next(jobs)) != NILLNODE) {
3002: job = (Job *) Lst_Datum(ln);
1.1 deraadt 3003:
3004: /*
3005: * kill the child process with increasingly drastic signals to make
3006: * darn sure it's dead.
3007: */
3008: #ifdef RMT_WANTS_SIGNALS
3009: if (job->flags & JOB_REMOTE) {
3010: Rmt_Signal(job, SIGINT);
3011: Rmt_Signal(job, SIGKILL);
3012: } else {
3013: KILL(job->pid, SIGINT);
3014: KILL(job->pid, SIGKILL);
3015: }
3016: #else
3017: KILL(job->pid, SIGINT);
3018: KILL(job->pid, SIGKILL);
3019: #endif /* RMT_WANTS_SIGNALS */
3020: }
3021: }
3022:
3023: /*
3024: * Catch as many children as want to report in at first, then give up
3025: */
1.2 deraadt 3026: while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
1.1 deraadt 3027: continue;
1.2 deraadt 3028: (void) eunlink(tfile);
3029: }
3030:
3031: #ifdef REMOTE
3032: /*-
3033: *-----------------------------------------------------------------------
3034: * JobFlagForMigration --
3035: * Handle the eviction of a child. Called from RmtStatusChange.
3036: * Flags the child as remigratable and then suspends it.
3037: *
3038: * Results:
3039: * none.
3040: *
3041: * Side Effects:
3042: * The job descriptor is flagged for remigration.
3043: *
3044: *-----------------------------------------------------------------------
3045: */
3046: void
3047: JobFlagForMigration(hostID)
3048: int hostID; /* ID of host we used, for matching children. */
3049: {
3050: register Job *job; /* job descriptor for dead child */
3051: LstNode jnode; /* list element for finding job */
3052:
3053: if (DEBUG(JOB)) {
3054: (void) fprintf(stdout, "JobFlagForMigration(%d) called.\n", hostID);
3055: (void) fflush(stdout);
3056: }
3057: jnode = Lst_Find(jobs, (ClientData)hostID, JobCmpRmtID);
3058:
3059: if (jnode == NILLNODE) {
3060: jnode = Lst_Find(stoppedJobs, (ClientData)hostID, JobCmpRmtID);
3061: if (jnode == NILLNODE) {
3062: if (DEBUG(JOB)) {
3063: Error("Evicting host(%d) not in table", hostID);
3064: }
3065: return;
3066: }
3067: }
3068: job = (Job *) Lst_Datum(jnode);
3069:
3070: if (DEBUG(JOB)) {
3071: (void) fprintf(stdout,
3072: "JobFlagForMigration(%d) found job '%s'.\n", hostID,
3073: job->node->name);
3074: (void) fflush(stdout);
3075: }
3076:
3077: KILL(job->pid, SIGSTOP);
3078:
3079: job->flags |= JOB_REMIGRATE;
3080: }
3081:
3082: #endif
3083:
3084: /*-
3085: *-----------------------------------------------------------------------
3086: * JobRestartJobs --
3087: * Tries to restart stopped jobs if there are slots available.
3088: * Note that this tries to restart them regardless of pending errors.
3089: * It's not good to leave stopped jobs lying around!
3090: *
3091: * Results:
3092: * None.
3093: *
3094: * Side Effects:
3095: * Resumes(and possibly migrates) jobs.
3096: *
3097: *-----------------------------------------------------------------------
3098: */
3099: static void
3100: JobRestartJobs()
3101: {
3102: while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
3103: if (DEBUG(JOB)) {
3104: (void) fprintf(stdout,
3105: "Job queue is not full. Restarting a stopped job.\n");
3106: (void) fflush(stdout);
3107: }
3108: JobRestart((Job *)Lst_DeQueue(stoppedJobs));
3109: }
1.1 deraadt 3110: }
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