Annotation of src/usr.bin/make/job.c, Revision 1.94
1.40 espie 1: /* $OpenPackages$ */
1.93 espie 2: /* $OpenBSD$ */
1.6 millert 3: /* $NetBSD: job.c,v 1.16 1996/11/06 17:59:08 christos Exp $ */
1.1 deraadt 4:
5: /*
6: * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
7: * Copyright (c) 1988, 1989 by Adam de Boor
8: * Copyright (c) 1989 by Berkeley Softworks
9: * All rights reserved.
10: *
11: * This code is derived from software contributed to Berkeley by
12: * Adam de Boor.
13: *
14: * Redistribution and use in source and binary forms, with or without
15: * modification, are permitted provided that the following conditions
16: * are met:
17: * 1. Redistributions of source code must retain the above copyright
18: * notice, this list of conditions and the following disclaimer.
19: * 2. Redistributions in binary form must reproduce the above copyright
20: * notice, this list of conditions and the following disclaimer in the
21: * documentation and/or other materials provided with the distribution.
1.55 millert 22: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: */
38:
39: /*-
40: * job.c --
41: * handle the creation etc. of our child processes.
42: *
43: * Interface:
1.40 espie 44: * Job_Make Start the creation of the given target.
1.1 deraadt 45: *
1.40 espie 46: * Job_CatchChildren Check for and handle the termination of any
47: * children. This must be called reasonably
48: * frequently to keep the whole make going at
49: * a decent clip, since job table entries aren't
50: * removed until their process is caught this way.
51: *
52: * Job_CatchOutput Print any output our children have produced.
53: * Should also be called fairly frequently to
54: * keep the user informed of what's going on.
55: * If no output is waiting, it will block for
56: * a time given by the SEL_* constants, below,
57: * or until output is ready.
58: *
1.53 jmc 59: * Job_Init Called to initialize this module. in addition,
1.40 espie 60: * any commands attached to the .BEGIN target
61: * are executed before this function returns.
62: * Hence, the makefile must have been parsed
63: * before this function is called.
64: *
65: * Job_End Cleanup any memory used.
66: *
1.41 espie 67: * Job_Full Return true if the job table is filled.
1.40 espie 68: *
1.41 espie 69: * Job_Empty Return true if the job table is completely
1.40 espie 70: * empty.
71: *
72: * Job_Finish Perform any final processing which needs doing.
73: * This includes the execution of any commands
74: * which have been/were attached to the .END
75: * target. It should only be called when the
76: * job table is empty.
77: *
78: * Job_AbortAll Abort all currently running jobs. It doesn't
79: * handle output or do anything for the jobs,
80: * just kills them. It should only be called in
81: * an emergency, as it were.
1.1 deraadt 82: *
1.40 espie 83: * Job_Wait Wait for all currently-running jobs to finish.
1.1 deraadt 84: */
85:
86: #include <sys/types.h>
87: #include <sys/wait.h>
1.41 espie 88: #include <ctype.h>
89: #include <errno.h>
1.1 deraadt 90: #include <fcntl.h>
1.41 espie 91: #include <signal.h>
1.69 espie 92: #include <stdarg.h>
1.1 deraadt 93: #include <stdio.h>
1.42 espie 94: #include <stdlib.h>
1.1 deraadt 95: #include <string.h>
1.41 espie 96: #include <unistd.h>
97: #include "config.h"
98: #include "defines.h"
1.1 deraadt 99: #include "job.h"
1.63 espie 100: #include "engine.h"
1.1 deraadt 101: #include "pathnames.h"
1.41 espie 102: #include "var.h"
103: #include "targ.h"
104: #include "error.h"
105: #include "lst.h"
106: #include "extern.h"
107: #include "gnode.h"
108: #include "memory.h"
109: #include "make.h"
110:
1.50 espie 111: /*
112: * The SEL_ constants determine the maximum amount of time spent in select
113: * before coming out to see if a child has finished. SEL_SEC is the number of
114: * seconds and SEL_USEC is the number of micro-seconds
115: */
116: #define SEL_SEC 0
117: #define SEL_USEC 500000
118:
119:
120: /*-
121: * Job Table definitions.
122: *
123: * Each job has several things associated with it:
124: * 1) The process id of the child shell
125: * 2) The graph node describing the target being made by this job
1.93 espie 126: * 3) An FILE* for writing out the commands. This is only
1.50 espie 127: * used before the job is actually started.
1.93 espie 128: * 4) Things used for handling the shell's output.
1.76 espie 129: * the output is being caught via a pipe and
1.50 espie 130: * the descriptors of our pipe, an array in which output is line
131: * buffered and the current position in that buffer are all
1.78 espie 132: * maintained for each job.
1.93 espie 133: * 5) A word of flags which determine how the module handles errors,
1.50 espie 134: * echoing, etc. for the job
135: *
136: * The job "table" is kept as a linked Lst in 'jobs', with the number of
137: * active jobs maintained in the 'nJobs' variable. At no time will this
138: * exceed the value of 'maxJobs', initialized by the Job_Init function.
139: *
140: * When a job is finished, the Make_Update function is called on each of the
141: * parents of the node which was just remade. This takes care of the upward
142: * traversal of the dependency graph.
143: */
144: #define JOB_BUFSIZE 1024
145: typedef struct Job_ {
1.51 mpech 146: pid_t pid; /* The child's process ID */
1.50 espie 147: GNode *node; /* The target the child is making */
148: LstNode tailCmds; /* The node of the first command to be
149: * saved when the job has been run */
150: FILE *cmdFILE; /* When creating the shell script, this is
151: * where the commands go */
152: int rmtID; /* ID returned from Rmt module */
153: short flags; /* Flags to control treatment of job */
154: #define JOB_IGNERR 0x001 /* Ignore non-zero exits */
155: #define JOB_SILENT 0x002 /* no output */
1.83 espie 156: #define JOB_SPECIAL 0x004 /* Target is a special one. */
1.79 espie 157: #define JOB_IGNDOTS 0x008 /* Ignore "..." lines when processing
158: * commands */
1.50 espie 159: #define JOB_RESTART 0x080 /* Job needs to be completely restarted */
1.79 espie 160: #define JOB_RESUME 0x100 /* Job needs to be resumed b/c it stopped,
161: * for some reason */
162: #define JOB_CONTINUING 0x200 /* We are in the process of resuming this job.
163: * Used to avoid infinite recursion between
164: * JobFinish and JobRestart */
1.76 espie 165: int inPipe; /* Input side of pipe associated
166: * with job's output channel */
167: int outPipe; /* Output side of pipe associated with
168: * job's output channel */
169: char outBuf[JOB_BUFSIZE + 1];
170: /* Buffer for storing the output of the
171: * job, line by line */
172: int curPos; /* Current position in op_outBuf */
1.50 espie 173: } Job;
174:
1.78 espie 175:
1.1 deraadt 176: /*
1.6 millert 177: * error handling variables
1.1 deraadt 178: */
1.40 espie 179: static int errors = 0; /* number of errors reported */
180: static int aborting = 0; /* why is the make aborting? */
181: #define ABORT_ERROR 1 /* Because of an error */
182: #define ABORT_INTERRUPT 2 /* Because it was interrupted */
183: #define ABORT_WAIT 3 /* Waiting for jobs to finish */
1.1 deraadt 184:
1.40 espie 185: static int numCommands; /* The number of commands actually printed
1.1 deraadt 186: * for a target. Should this number be
187: * 0, no shell will be executed. */
188:
189: /*
190: * Return values from JobStart.
191: */
1.40 espie 192: #define JOB_RUNNING 0 /* Job is running */
193: #define JOB_ERROR 1 /* Error in starting the job */
194: #define JOB_FINISHED 2 /* The job is already finished */
195: #define JOB_STOPPED 3 /* The job is stopped */
1.1 deraadt 196:
1.70 espie 197: #define SHELL_ECHO_OFF "set -"
198: #define SHELL_ECHO_ON "set -v"
199: #define SHELL_ERROR_ON "set -e"
200: #define SHELL_ERROR_OFF "set +e"
201: #define SHELL_ECHO_FLAG "v"
202: #define SHELL_ERROR_FLAG "e"
1.1 deraadt 203:
1.70 espie 204: static const char *shellPath = _PATH_BSHELL;
205: static const char *shellName = "sh";
1.1 deraadt 206:
1.78 espie 207:
1.40 espie 208: static int maxJobs; /* The most children we can run at once */
1.83 espie 209: static int nJobs; /* The number of children currently running */
1.48 espie 210: static LIST jobs; /* The structures that describe them */
1.79 espie 211: static bool jobFull; /* Flag to tell when the job table is full. It
1.83 espie 212: * is set true when nJobs equals maxJobs */
1.40 espie 213: static fd_set *outputsp; /* Set of descriptors of pipes connected to
1.1 deraadt 214: * the output channels of children */
1.8 deraadt 215: static int outputsn;
1.48 espie 216: static GNode *lastNode; /* The node for which output was most recently
1.1 deraadt 217: * produced. */
1.48 espie 218: static char *targFmt; /* Format string to use to head output from a
1.1 deraadt 219: * job when it's not the most-recent job heard
220: * from */
1.2 deraadt 221:
222: # define TARG_FMT "--- %s ---\n" /* Default format */
223: # define MESSAGE(fp, gn) \
1.40 espie 224: (void)fprintf(fp, targFmt, gn->name);
1.1 deraadt 225:
226: /*
1.50 espie 227: * When JobStart attempts to run a job but isn't allowed to,
228: * the job is placed on the stoppedJobs queue to be run
1.6 millert 229: * when the next job finishes.
1.1 deraadt 230: */
1.48 espie 231: static LIST stoppedJobs; /* Lst of Job structures describing
1.1 deraadt 232: * jobs that were stopped due to concurrency
233: * limits or migration home */
234:
235:
236: #if defined(USE_PGRP) && defined(SYSV)
1.40 espie 237: # define KILL(pid, sig) killpg(-(pid), (sig))
1.1 deraadt 238: #else
239: # if defined(USE_PGRP)
1.2 deraadt 240: # define KILL(pid, sig) killpg((pid), (sig))
1.1 deraadt 241: # else
1.2 deraadt 242: # define KILL(pid, sig) kill((pid), (sig))
1.1 deraadt 243: # endif
244: #endif
245:
1.6 millert 246: /*
1.2 deraadt 247: * Grmpf... There is no way to set bits of the wait structure
248: * anymore with the stupid W*() macros. I liked the union wait
249: * stuff much more. So, we devise our own macros... This is
250: * really ugly, use dramamine sparingly. You have been warned.
251: */
252: #define W_SETMASKED(st, val, fun) \
253: { \
254: int sh = (int) ~0; \
255: int mask = fun(sh); \
256: \
257: for (sh = 0; ((mask >> sh) & 1) == 0; sh++) \
258: continue; \
259: *(st) = (*(st) & ~mask) | ((val) << sh); \
260: }
261:
262: #define W_SETTERMSIG(st, val) W_SETMASKED(st, val, WTERMSIG)
263: #define W_SETEXITSTATUS(st, val) W_SETMASKED(st, val, WEXITSTATUS)
264:
265:
1.93 espie 266: static void pass_signal_to_job(void *, void *);
1.57 espie 267: static void SigHandler(int);
1.93 espie 268: static void handle_all_signals(void);
269: static void handle_signal(int);
1.40 espie 270: static int JobCmpPid(void *, void *);
1.60 espie 271: static int JobPrintCommand(LstNode, void *);
1.40 espie 272: static void JobSaveCommand(void *, void *);
273: static void JobClose(Job *);
274: static void JobFinish(Job *, int *);
275: static void JobExec(Job *, char **);
276: static void JobMakeArgv(Job *, char **);
277: static void JobRestart(Job *);
1.86 espie 278: static int JobStart(GNode *, int);
1.40 espie 279: static char *JobOutput(Job *, char *, char *, int);
1.41 espie 280: static void JobDoOutput(Job *, bool);
1.40 espie 281: static void JobInterrupt(int, int);
282: static void JobRestartJobs(void);
1.69 espie 283: static void DBPRINTF(Job *, const char *, ...);
1.84 espie 284: static void debug_printf(const char *, ...);
1.88 espie 285: static FILE *new_command_file(void);
1.93 espie 286: static void setup_signal(int);
1.94 ! espie 287: static void setup_all_signals(void);
1.93 espie 288:
289: static volatile sig_atomic_t got_signal;
1.1 deraadt 290:
1.57 espie 291: static volatile sig_atomic_t got_SIGINT, got_SIGHUP, got_SIGQUIT,
1.93 espie 292: got_SIGTERM, got_SIGTSTP, got_SIGTTOU, got_SIGTTIN, got_SIGWINCH;
293:
1.57 espie 294:
1.88 espie 295: #define TMPPAT "/tmp/makeXXXXXXXXXX"
296:
297: static FILE *
298: new_command_file()
299: {
300: int fd;
301: FILE *f;
302: char tmp[] = TMPPAT;
303:
304: fd = mkstemp(tmp);
305: if (fd == -1)
306: return NULL;
307: f = fdopen(fd, "w");
308: if (f == NULL)
309: close(fd);
310: eunlink(tmp);
311: return f;
312: }
313:
1.57 espie 314: static void
315: SigHandler(int sig)
316: {
317: switch(sig) {
318: case SIGINT:
319: got_SIGINT++;
1.93 espie 320: got_signal = 1;
1.57 espie 321: break;
322: case SIGHUP:
323: got_SIGHUP++;
1.93 espie 324: got_signal = 1;
1.57 espie 325: break;
326: case SIGQUIT:
327: got_SIGQUIT++;
1.93 espie 328: got_signal = 1;
1.57 espie 329: break;
330: case SIGTERM:
331: got_SIGTERM++;
1.93 espie 332: got_signal = 1;
1.57 espie 333: break;
1.93 espie 334: #ifdef USE_PGRP
1.57 espie 335: case SIGTSTP:
336: got_SIGTSTP++;
1.93 espie 337: got_signal = 1;
1.57 espie 338: break;
339: case SIGTTOU:
340: got_SIGTTOU++;
1.93 espie 341: got_signal = 1;
1.57 espie 342: break;
343: case SIGTTIN:
344: got_SIGTTIN++;
1.93 espie 345: got_signal = 1;
1.57 espie 346: break;
347: case SIGWINCH:
348: got_SIGWINCH++;
1.93 espie 349: got_signal = 1;
1.57 espie 350: break;
351: #endif
352: }
353: }
354:
355: static void
1.93 espie 356: handle_all_signals()
1.57 espie 357: {
1.93 espie 358: if (got_signal)
359: got_signal = 0;
360: else
361: return;
362:
1.57 espie 363: if (got_SIGINT) {
364: got_SIGINT=0;
1.93 espie 365: handle_signal(SIGINT);
1.57 espie 366: }
367: if (got_SIGHUP) {
368: got_SIGHUP=0;
1.93 espie 369: handle_signal(SIGHUP);
1.57 espie 370: }
371: if (got_SIGQUIT) {
372: got_SIGQUIT=0;
1.93 espie 373: handle_signal(SIGQUIT);
1.57 espie 374: }
375: if (got_SIGTERM) {
376: got_SIGTERM=0;
1.93 espie 377: handle_signal(SIGTERM);
1.57 espie 378: }
379: if (got_SIGTSTP) {
380: got_SIGTSTP=0;
1.93 espie 381: handle_signal(SIGTSTP);
1.57 espie 382: }
383: if (got_SIGTTOU) {
384: got_SIGTTOU=0;
1.93 espie 385: handle_signal(SIGTTOU);
1.57 espie 386: }
387: if (got_SIGTTIN) {
388: got_SIGTTIN=0;
1.93 espie 389: handle_signal(SIGTTIN);
1.57 espie 390: }
391: if (got_SIGWINCH) {
392: got_SIGWINCH=0;
1.93 espie 393: handle_signal(SIGWINCH);
1.57 espie 394: }
395: }
396:
1.1 deraadt 397: /*-
398: *-----------------------------------------------------------------------
399: * JobCondPassSig --
1.50 espie 400: * Pass a signal to a job if USE_PGRP
1.1 deraadt 401: * is defined.
402: *
403: * Side Effects:
404: * None, except the job may bite it.
405: *-----------------------------------------------------------------------
406: */
1.27 espie 407: static void
1.93 espie 408: pass_signal_to_job(void *jobp, /* Job to biff */
1.56 espie 409: void *signop) /* Signal to send it */
1.1 deraadt 410: {
1.66 espie 411: Job *job = (Job *)jobp;
412: int signo = *(int *)signop;
413: if (DEBUG(JOB)) {
414: (void)fprintf(stdout,
1.93 espie 415: "pass_signal_to_job passing signal %d to child %ld.\n",
1.66 espie 416: signo, (long)job->pid);
417: (void)fflush(stdout);
418: }
419: KILL(job->pid, signo);
1.1 deraadt 420: }
421:
422: /*-
423: *-----------------------------------------------------------------------
1.94 ! espie 424: * handle_signal --
1.68 espie 425: * Pass a signal to all local jobs if USE_PGRP is defined,
1.50 espie 426: * then die ourselves.
1.1 deraadt 427: *
428: * Side Effects:
429: * We die by the same signal.
430: *-----------------------------------------------------------------------
431: */
432: static void
1.93 espie 433: handle_signal(int signo) /* The signal number we've received */
1.1 deraadt 434: {
1.66 espie 435: sigset_t nmask, omask;
436: struct sigaction act;
1.6 millert 437:
1.66 espie 438: if (DEBUG(JOB)) {
1.93 espie 439: (void)fprintf(stdout, "handle_signal(%d) called.\n", signo);
1.66 espie 440: (void)fflush(stdout);
441: }
1.93 espie 442: Lst_ForEach(&jobs, pass_signal_to_job, &signo);
1.66 espie 443:
444: /*
445: * Deal with proper cleanup based on the signal received. We only run
446: * the .INTERRUPT target if the signal was in fact an interrupt. The
447: * other three termination signals are more of a "get out *now*"
448: * command.
449: */
450: if (signo == SIGINT) {
451: JobInterrupt(true, signo);
452: } else if (signo == SIGHUP || signo == SIGTERM || signo == SIGQUIT) {
453: JobInterrupt(false, signo);
454: }
1.1 deraadt 455:
1.66 espie 456: /*
457: * Leave gracefully if SIGQUIT, rather than core dumping.
458: */
459: if (signo == SIGQUIT) {
460: Finish(0);
461: }
1.6 millert 462:
1.66 espie 463: /*
464: * Send ourselves the signal now we've given the message to everyone
465: * else. Note we block everything else possible while we're getting
466: * the signal. This ensures that all our jobs get continued when we
467: * wake up before we take any other signal.
468: */
469: sigemptyset(&nmask);
470: sigaddset(&nmask, signo);
471: sigprocmask(SIG_SETMASK, &nmask, &omask);
472: memset(&act, 0, sizeof act);
473: act.sa_handler = SIG_DFL;
474: sigemptyset(&act.sa_mask);
475: act.sa_flags = 0;
476: sigaction(signo, &act, NULL);
1.6 millert 477:
1.66 espie 478: if (DEBUG(JOB)) {
479: (void)fprintf(stdout,
1.93 espie 480: "handle_signal passing signal to self, mask = %x.\n",
1.66 espie 481: ~0 & ~(1 << (signo-1)));
482: (void)fflush(stdout);
483: }
484: (void)signal(signo, SIG_DFL);
1.1 deraadt 485:
1.66 espie 486: (void)KILL(getpid(), signo);
1.1 deraadt 487:
1.66 espie 488: signo = SIGCONT;
1.93 espie 489: Lst_ForEach(&jobs, pass_signal_to_job, &signo);
1.1 deraadt 490:
1.66 espie 491: (void)sigprocmask(SIG_SETMASK, &omask, NULL);
492: sigprocmask(SIG_SETMASK, &omask, NULL);
493: act.sa_handler = SigHandler;
494: sigaction(signo, &act, NULL);
1.1 deraadt 495: }
496:
497: /*-
498: *-----------------------------------------------------------------------
499: * JobCmpPid --
500: * Compare the pid of the job with the given pid and return 0 if they
501: * are equal. This function is called from Job_CatchChildren via
502: * Lst_Find to find the job descriptor of the finished job.
503: *
504: * Results:
505: * 0 if the pid's match
506: *-----------------------------------------------------------------------
507: */
508: static int
1.56 espie 509: JobCmpPid(void *job, /* job to examine */
510: void *pid) /* process id desired */
1.1 deraadt 511: {
1.66 espie 512: return *(pid_t *)pid - ((Job *)job)->pid;
1.1 deraadt 513: }
514:
1.69 espie 515: static void
516: DBPRINTF(Job *job, const char *fmt, ...)
517: {
518: va_list va;
519: va_start(va, fmt);
520: if (DEBUG(JOB)) {
521: (void)vfprintf(stdout, fmt, va);
522: fflush(stdout);
523: }
524: vfprintf(job->cmdFILE, fmt, va);
525: va_end(va);
526: }
527:
1.84 espie 528: static void
529: debug_printf(const char *fmt, ...)
530: {
531: if (DEBUG(JOB)) {
532: va_list va;
533:
534: va_start(va, fmt);
535: (void)vfprintf(stdout, fmt, va);
536: fflush(stdout);
537: va_end(va);
538: }
539: }
540:
1.1 deraadt 541: /*-
542: *-----------------------------------------------------------------------
543: * JobPrintCommand --
544: * Put out another command for the given job. If the command starts
545: * with an @ or a - we process it specially. In the former case,
546: * so long as the -s and -n flags weren't given to make, we stick
547: * a shell-specific echoOff command in the script. In the latter,
548: * we ignore errors for the entire job, unless the shell has error
549: * control.
550: * If the command is just "..." we take all future commands for this
551: * job to be commands to be executed once the entire graph has been
552: * made and return non-zero to signal that the end of the commands
1.78 espie 553: * was reached. These commands are later attached to the end_node
1.1 deraadt 554: * node and executed by Job_End when all things are done.
1.40 espie 555: * This function is called from JobStart via Lst_Find
1.1 deraadt 556: *
557: * Results:
1.26 espie 558: * Always 1, unless the command was "..."
1.1 deraadt 559: *
560: * Side Effects:
561: * If the command begins with a '-' and the shell has no error control,
562: * the JOB_IGNERR flag is set in the job descriptor.
563: * If the command is "..." and we're not ignoring such things,
564: * tailCmds is set to the successor node of the cmd.
565: * numCommands is incremented if the command is actually printed.
566: *-----------------------------------------------------------------------
567: */
568: static int
1.78 espie 569: JobPrintCommand(LstNode cmdNode, /* command string to print */
570: void *jobp) /* job for which to print it */
1.1 deraadt 571: {
1.78 espie 572: bool noSpecials; /* true if we shouldn't worry about
573: * inserting special commands into
574: * the input stream. */
575: bool shutUp = false; /* true if we put a no echo command
576: * into the command file */
577: bool errOff = false; /* true if we turned error checking
578: * off before printing the command
579: * and need to turn it back on */
580: char *cmdTemplate; /* Template to use when printing the
581: * command */
582: char *cmdStart; /* Start of expanded command */
1.66 espie 583: char *cmd = (char *)Lst_Datum(cmdNode);
584: Job *job = (Job *)jobp;
585:
586: noSpecials = (noExecute && !(job->node->type & OP_MAKE));
587:
588: if (strcmp(cmd, "...") == 0) {
589: job->node->type |= OP_SAVE_CMDS;
590: if ((job->flags & JOB_IGNDOTS) == 0) {
591: job->tailCmds = Lst_Succ(cmdNode);
592: return 0;
593: }
594: return 1;
1.2 deraadt 595: }
1.1 deraadt 596:
1.78 espie 597:
1.67 espie 598: numCommands++;
1.1 deraadt 599:
1.66 espie 600: /* For debugging, we replace each command with the result of expanding
601: * the variables in the command. */
602: cmdStart = cmd = Var_Subst(cmd, &job->node->context, false);
603: Lst_Replace(cmdNode, cmdStart);
1.1 deraadt 604:
1.66 espie 605: cmdTemplate = "%s\n";
1.1 deraadt 606:
1.66 espie 607: /*
608: * Check for leading @' and -'s to control echoing and error checking.
609: */
610: for (;; cmd++) {
611: if (*cmd == '@')
612: shutUp = DEBUG(LOUD) ? false : true;
613: else if (*cmd == '-')
614: errOff = true;
615: else if (*cmd != '+')
616: break;
1.1 deraadt 617: }
618:
1.66 espie 619: while (isspace(*cmd))
620: cmd++;
621:
622: if (shutUp) {
1.72 espie 623: if (!(job->flags & JOB_SILENT) && !noSpecials) {
1.71 espie 624: DBPRINTF(job, "%s\n", SHELL_ECHO_OFF);
1.1 deraadt 625: } else {
1.66 espie 626: shutUp = false;
627: }
628: }
629:
630: if (errOff) {
631: if ( !(job->flags & JOB_IGNERR) && !noSpecials) {
1.72 espie 632: /*
1.78 espie 633: * we don't want the error-control commands showing
634: * up either, so we turn off echoing while executing
635: * them. We could put another field in the shell
636: * structure to tell JobDoOutput to look for this
637: * string too, but why make it any more complex than
638: * it already is?
1.72 espie 639: */
640: if (!(job->flags & JOB_SILENT) && !shutUp) {
1.75 espie 641: DBPRINTF(job, "%s; %s; %s\n", SHELL_ECHO_OFF,
642: SHELL_ERROR_OFF, SHELL_ECHO_ON);
1.66 espie 643: } else {
1.72 espie 644: DBPRINTF(job, "%s\n", SHELL_ERROR_OFF);
1.66 espie 645: }
646: } else {
647: errOff = false;
1.1 deraadt 648: }
1.66 espie 649: }
650:
1.69 espie 651: DBPRINTF(job, cmdTemplate, cmd);
1.66 espie 652:
653: if (errOff) {
654: /*
655: * If echoing is already off, there's no point in issuing the
656: * echoOff command. Otherwise we issue it and pretend it was on
657: * for the whole command...
1.1 deraadt 658: */
1.72 espie 659: if (!shutUp && !(job->flags & JOB_SILENT)) {
1.71 espie 660: DBPRINTF(job, "%s\n", SHELL_ECHO_OFF);
1.41 espie 661: shutUp = true;
1.1 deraadt 662: }
1.71 espie 663: DBPRINTF(job, "%s\n", SHELL_ERROR_ON);
1.66 espie 664: }
665: if (shutUp) {
1.71 espie 666: DBPRINTF(job, "%s\n", SHELL_ECHO_ON);
1.1 deraadt 667: }
1.66 espie 668: return 1;
1.1 deraadt 669: }
670:
671: /*-
672: *-----------------------------------------------------------------------
673: * JobSaveCommand --
674: * Save a command to be executed when everything else is done.
675: * Callback function for JobFinish...
676: *
677: * Side Effects:
1.78 espie 678: * The command is tacked onto the end of end_node's commands list.
1.1 deraadt 679: *-----------------------------------------------------------------------
680: */
1.27 espie 681: static void
1.56 espie 682: JobSaveCommand(void *cmd, void *gn)
1.1 deraadt 683: {
1.66 espie 684: GNode *g = (GNode *)gn;
685: char *result;
1.28 espie 686:
1.66 espie 687: result = Var_Subst((char *)cmd, &g->context, false);
1.78 espie 688: Lst_AtEnd(&end_node->commands, result);
1.2 deraadt 689: }
690:
691:
692: /*-
693: *-----------------------------------------------------------------------
694: * JobClose --
695: * Called to close both input and output pipes when a job is finished.
696: *
697: * Side Effects:
698: * The file descriptors associated with the job are closed.
699: *-----------------------------------------------------------------------
700: */
701: static void
1.56 espie 702: JobClose(Job *job)
1.2 deraadt 703: {
1.76 espie 704: FD_CLR(job->inPipe, outputsp);
705: if (job->outPipe != job->inPipe) {
706: (void)close(job->outPipe);
1.66 espie 707: }
1.76 espie 708: JobDoOutput(job, true);
709: (void)close(job->inPipe);
1.1 deraadt 710: }
711:
712: /*-
713: *-----------------------------------------------------------------------
714: * JobFinish --
715: * Do final processing for the given job including updating
716: * parents and starting new jobs as available/necessary. Note
717: * that we pay no attention to the JOB_IGNERR flag here.
718: * This is because when we're called because of a noexecute flag
719: * or something, jstat.w_status is 0 and when called from
720: * Job_CatchChildren, the status is zeroed if it s/b ignored.
721: *
722: * Side Effects:
723: * Some nodes may be put on the toBeMade queue.
1.78 espie 724: * Final commands for the job are placed on end_node.
1.1 deraadt 725: *
1.6 millert 726: * If we got an error and are aborting (aborting == ABORT_ERROR) and
1.1 deraadt 727: * the job list is now empty, we are done for the day.
1.6 millert 728: * If we recognized an error (errors !=0), we set the aborting flag
1.1 deraadt 729: * to ABORT_ERROR so no more jobs will be started.
730: *-----------------------------------------------------------------------
731: */
732: /*ARGSUSED*/
733: static void
1.56 espie 734: JobFinish(Job *job, /* job to finish */
735: int *status) /* sub-why job went away */
1.2 deraadt 736: {
1.78 espie 737: bool done;
1.2 deraadt 738:
1.66 espie 739: if ((WIFEXITED(*status) &&
740: WEXITSTATUS(*status) != 0 && !(job->flags & JOB_IGNERR)) ||
741: (WIFSIGNALED(*status) && WTERMSIG(*status) != SIGCONT)) {
742: /*
743: * If it exited non-zero and either we're doing things our
744: * way or we're not ignoring errors, the job is finished.
745: * Similarly, if the shell died because of a signal
746: * the job is also finished. In these
747: * cases, finish out the job's output before printing the exit
748: * status...
749: */
750: JobClose(job);
751: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
752: (void)fclose(job->cmdFILE);
753: }
754: done = true;
755: } else if (WIFEXITED(*status)) {
756: /*
757: * Deal with ignored errors in -B mode. We need to print a
758: * message telling of the ignored error as well as setting
759: * status.w_status to 0 so the next command gets run. To do
760: * this, we set done to be true if in -B mode and the job
761: * exited non-zero.
762: */
763: done = WEXITSTATUS(*status) != 0;
764: /*
765: * Old comment said: "Note we don't want to close down any of
766: * the streams until we know we're at the end." But we do.
767: * Otherwise when are we going to print the rest of the stuff?
768: */
769: JobClose(job);
770: } else {
771: /*
772: * No need to close things down or anything.
773: */
774: done = false;
1.1 deraadt 775: }
1.6 millert 776:
1.66 espie 777: if (done ||
778: WIFSTOPPED(*status) ||
779: (WIFSIGNALED(*status) && WTERMSIG(*status) == SIGCONT) ||
780: DEBUG(JOB)) {
781: FILE *out;
782:
1.76 espie 783: out = stdout;
1.1 deraadt 784:
1.66 espie 785: if (WIFEXITED(*status)) {
1.84 espie 786: debug_printf("Process %ld exited.\n", (long)job->pid);
1.66 espie 787: if (WEXITSTATUS(*status) != 0) {
1.76 espie 788: if (job->node != lastNode) {
1.66 espie 789: MESSAGE(out, job->node);
790: lastNode = job->node;
791: }
792: (void)fprintf(out, "*** Error code %d%s\n",
793: WEXITSTATUS(*status),
1.68 espie 794: (job->flags & JOB_IGNERR) ? "(ignored)" :
1.66 espie 795: "");
796:
797: if (job->flags & JOB_IGNERR) {
798: *status = 0;
799: }
800: } else if (DEBUG(JOB)) {
1.76 espie 801: if (job->node != lastNode) {
1.66 espie 802: MESSAGE(out, job->node);
803: lastNode = job->node;
804: }
1.68 espie 805: (void)fprintf(out,
1.66 espie 806: "*** Completed successfully\n");
807: }
808: } else if (WIFSTOPPED(*status)) {
1.84 espie 809: debug_printf("Process %ld stopped.\n", (long)job->pid);
1.76 espie 810: if (job->node != lastNode) {
1.66 espie 811: MESSAGE(out, job->node);
812: lastNode = job->node;
813: }
814: (void)fprintf(out, "*** Stopped -- signal %d\n",
815: WSTOPSIG(*status));
816: job->flags |= JOB_RESUME;
817: Lst_AtEnd(&stoppedJobs, job);
818: (void)fflush(out);
819: return;
820: } else if (WTERMSIG(*status) == SIGCONT) {
821: /*
822: * If the beastie has continued, shift the Job from the
823: * stopped list to the running one (or re-stop it if
824: * concurrency is exceeded) and go and get another
825: * child.
826: */
827: if (job->flags & (JOB_RESUME|JOB_RESTART)) {
1.76 espie 828: if (job->node != lastNode) {
1.66 espie 829: MESSAGE(out, job->node);
830: lastNode = job->node;
831: }
832: (void)fprintf(out, "*** Continued\n");
833: }
834: if (!(job->flags & JOB_CONTINUING)) {
1.84 espie 835: debug_printf(
836: "Warning: "
837: "process %ld was not continuing.\n",
838: (long)job->pid);
1.66 espie 839: #if 0
840: /*
841: * We don't really want to restart a job from
842: * scratch just because it continued,
843: * especially not without killing the
844: * continuing process! That's why this is
845: * ifdef'ed out. FD - 9/17/90
846: */
847: JobRestart(job);
1.2 deraadt 848: #endif
1.66 espie 849: }
850: job->flags &= ~JOB_CONTINUING;
851: Lst_AtEnd(&jobs, job);
1.67 espie 852: nJobs++;
1.84 espie 853: debug_printf("Process %ld is continuing locally.\n",
854: (long)job->pid);
1.66 espie 855: if (nJobs == maxJobs) {
856: jobFull = true;
1.84 espie 857: debug_printf("Job queue is full.\n");
1.66 espie 858: }
859: (void)fflush(out);
860: return;
861: } else {
1.76 espie 862: if (job->node != lastNode) {
1.66 espie 863: MESSAGE(out, job->node);
864: lastNode = job->node;
865: }
1.68 espie 866: (void)fprintf(out, "*** Signal %d\n",
1.66 espie 867: WTERMSIG(*status));
1.40 espie 868: }
1.66 espie 869:
870: (void)fflush(out);
1.1 deraadt 871: }
872:
1.85 espie 873: done = true;
1.1 deraadt 874:
1.66 espie 875: if (done &&
876: aborting != ABORT_ERROR &&
877: aborting != ABORT_INTERRUPT &&
878: *status == 0) {
879: /* As long as we aren't aborting and the job didn't return a
880: * non-zero status that we shouldn't ignore, we call
881: * Make_Update to update the parents. In addition, any saved
882: * commands for the node are placed on the .END target. */
883: Lst_ForEachFrom(job->tailCmds, JobSaveCommand, job->node);
884: job->node->made = MADE;
885: Make_Update(job->node);
886: free(job);
887: } else if (*status != 0) {
1.67 espie 888: errors++;
1.66 espie 889: free(job);
890: }
1.1 deraadt 891:
1.66 espie 892: JobRestartJobs();
1.1 deraadt 893:
894: /*
1.66 espie 895: * Set aborting if any error.
1.1 deraadt 896: */
1.66 espie 897: if (errors && !keepgoing && aborting != ABORT_INTERRUPT) {
898: /*
899: * If we found any errors in this batch of children and the -k
900: * flag wasn't given, we set the aborting flag so no more jobs
901: * get started.
902: */
903: aborting = ABORT_ERROR;
904: }
1.6 millert 905:
1.66 espie 906: if (aborting == ABORT_ERROR && Job_Empty()) {
907: /*
908: * If we are aborting and the job table is now empty, we finish.
909: */
910: Finish(errors);
911: }
1.1 deraadt 912: }
913:
914: /*-
915: *-----------------------------------------------------------------------
916: * JobExec --
917: * Execute the shell for the given job. Called from JobStart and
918: * JobRestart.
919: *
920: * Side Effects:
921: * A shell is executed, outputs is altered and the Job structure added
922: * to the job table.
923: *-----------------------------------------------------------------------
924: */
925: static void
1.56 espie 926: JobExec(Job *job, char **argv)
1.1 deraadt 927: {
1.66 espie 928: pid_t cpid; /* ID of new child */
1.94 ! espie 929: static int signals_caught = 0;
1.6 millert 930:
1.66 espie 931: if (DEBUG(JOB)) {
1.78 espie 932: int i;
1.6 millert 933:
1.66 espie 934: (void)fprintf(stdout, "Running %s\n", job->node->name);
935: (void)fprintf(stdout, "\tCommand: ");
936: for (i = 0; argv[i] != NULL; i++) {
937: (void)fprintf(stdout, "%s ", argv[i]);
938: }
939: (void)fprintf(stdout, "\n");
940: (void)fflush(stdout);
1.1 deraadt 941: }
1.6 millert 942:
1.66 espie 943: /*
944: * Some jobs produce no output and it's disconcerting to have
945: * no feedback of their running (since they produce no output, the
946: * banner with their name in it never appears). This is an attempt to
947: * provide that feedback, even if nothing follows it.
948: */
1.87 espie 949: if (lastNode != job->node && !(job->flags & JOB_SILENT)) {
1.66 espie 950: MESSAGE(stdout, job->node);
951: lastNode = job->node;
952: }
1.1 deraadt 953:
1.94 ! espie 954: if (!signals_caught) {
! 955: signals_caught = 1;
! 956: setup_all_signals();
! 957: }
! 958:
1.66 espie 959: if ((cpid = fork()) == -1) {
960: Punt("Cannot fork");
961: } else if (cpid == 0) {
1.6 millert 962:
1.66 espie 963: /*
964: * Must duplicate the input stream down to the child's input
965: * and reset it to the beginning (again). Since the stream was
966: * marked close-on-exec, we must clear that bit in the new
967: * input.
968: */
1.81 espie 969: if (dup2(fileno(job->cmdFILE), 0) == -1)
1.82 espie 970: Punt("Cannot dup2(job->cmdFile): %s", strerror(errno));
1.66 espie 971: (void)fcntl(0, F_SETFD, 0);
972: (void)lseek(0, 0, SEEK_SET);
973:
1.76 espie 974: /*
1.78 espie 975: * Set up the child's output to be routed through the pipe
976: * we've created for it.
1.76 espie 977: */
978: if (dup2(job->outPipe, 1) == -1)
1.82 espie 979: Punt("Cannot dup2(job->outPipe): %s", strerror(errno));
1.66 espie 980: /*
981: * The output channels are marked close on exec. This bit was
982: * duplicated by the dup2 (on some systems), so we have to
983: * clear it before routing the shell's error output to the same
984: * place as its standard output.
985: */
986: (void)fcntl(1, F_SETFD, 0);
987: if (dup2(1, 2) == -1)
1.82 espie 988: Punt("Cannot dup2(stdout): %s", strerror(errno));
1.1 deraadt 989:
990: #ifdef USE_PGRP
1.66 espie 991: /*
992: * We want to switch the child into a different process family
993: * so we can kill it and all its descendants in one fell swoop,
994: * by killing its process family, but not commit suicide.
995: */
1.2 deraadt 996: # if defined(SYSV)
1.66 espie 997: (void)setsid();
1.2 deraadt 998: # else
1.66 espie 999: (void)setpgid(0, getpid());
1.2 deraadt 1000: # endif
1001: #endif /* USE_PGRP */
1.1 deraadt 1002:
1.66 espie 1003: (void)execv(shellPath, argv);
1004:
1005: (void)write(STDERR_FILENO, "Could not execute shell\n",
1006: sizeof("Could not execute shell"));
1007: _exit(1);
1008: } else {
1009: job->pid = cpid;
1010:
1.87 espie 1011: /* we set the current position in the buffer to the beginning
1012: * and mark another stream to watch in the outputs mask
1013: */
1014: job->curPos = 0;
1.66 espie 1015:
1.87 espie 1016: if (outputsp == NULL || job->inPipe > outputsn) {
1.92 cnst 1017: int fdn, ofdn;
1018: fd_set *tmp;
1.87 espie 1019:
1.92 cnst 1020: fdn = howmany(job->inPipe+1, NFDBITS);
1021: ofdn = outputsn ? howmany(outputsn+1, NFDBITS) : 0;
1.87 espie 1022:
1.92 cnst 1023: if (fdn != ofdn) {
1024: tmp = recalloc(outputsp, fdn, sizeof(fd_mask));
1.87 espie 1025: if (tmp == NULL)
1026: return;
1.92 cnst 1027: outputsp = tmp;
1.66 espie 1028: }
1.87 espie 1029: outputsn = job->inPipe;
1.66 espie 1030: }
1.87 espie 1031: FD_SET(job->inPipe, outputsp);
1.2 deraadt 1032:
1.66 espie 1033: /*
1034: * XXX: Used to not happen if REMOTE. Why?
1035: */
1036: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1037: (void)fclose(job->cmdFILE);
1038: job->cmdFILE = NULL;
1039: }
1.1 deraadt 1040: }
1041:
1.48 espie 1042: /*
1.66 espie 1043: * Now the job is actually running, add it to the table.
1.48 espie 1044: */
1.67 espie 1045: nJobs++;
1.66 espie 1046: Lst_AtEnd(&jobs, job);
1047: if (nJobs == maxJobs) {
1048: jobFull = true;
1.1 deraadt 1049: }
1050: }
1051:
1052: /*-
1053: *-----------------------------------------------------------------------
1054: * JobMakeArgv --
1055: * Create the argv needed to execute the shell for a given job.
1056: *-----------------------------------------------------------------------
1057: */
1058: static void
1.56 espie 1059: JobMakeArgv(Job *job, char **argv)
1.1 deraadt 1060: {
1.66 espie 1061: int argc;
1062: static char args[10]; /* For merged arguments */
1.6 millert 1063:
1.70 espie 1064: argv[0] = (char *)shellName;
1.66 espie 1065: argc = 1;
1.1 deraadt 1066:
1.73 espie 1067: (void)snprintf(args, sizeof(args), "-%s%s",
1068: (job->flags & JOB_IGNERR) ? "" : SHELL_ERROR_FLAG,
1069: (job->flags & JOB_SILENT) ? "" : SHELL_ECHO_FLAG);
1070:
1071: if (args[1]) {
1072: argv[argc] = args;
1073: argc++;
1.78 espie 1074: }
1.66 espie 1075: argv[argc] = NULL;
1.1 deraadt 1076: }
1077:
1078: /*-
1079: *-----------------------------------------------------------------------
1080: * JobRestart --
1.6 millert 1081: * Restart a job that stopped for some reason.
1.1 deraadt 1082: *
1083: * Side Effects:
1084: * jobFull will be set if the job couldn't be run.
1085: *-----------------------------------------------------------------------
1086: */
1087: static void
1.56 espie 1088: JobRestart(Job *job)
1.1 deraadt 1089: {
1.66 espie 1090: if (job->flags & JOB_RESTART) {
1091: /*
1092: * Set up the control arguments to the shell. This is based on
1093: * the flags set earlier for this job. If the JOB_IGNERR flag
1094: * is clear, the 'exit' flag of the commandShell is used to
1095: * cause it to exit upon receiving an error. If the JOB_SILENT
1096: * flag is clear, the 'echo' flag of the commandShell is used
1097: * to get it to start echoing as soon as it starts processing
1098: * commands.
1099: */
1100: char *argv[4];
1.6 millert 1101:
1.66 espie 1102: JobMakeArgv(job, argv);
1.2 deraadt 1103:
1.1 deraadt 1104: if (DEBUG(JOB)) {
1.68 espie 1105: (void)fprintf(stdout, "Restarting %s...",
1.66 espie 1106: job->node->name);
1107: (void)fflush(stdout);
1.1 deraadt 1108: }
1.83 espie 1109: if (nJobs >= maxJobs && !(job->flags & JOB_SPECIAL)) {
1.80 espie 1110: /*
1111: * Can't be exported and not allowed to run locally --
1112: * put it back on the hold queue and mark the table
1113: * full
1114: */
1.84 espie 1115: debug_printf("holding\n");
1.80 espie 1116: Lst_AtFront(&stoppedJobs, job);
1117: jobFull = true;
1.84 espie 1118: debug_printf("Job queue is full.\n");
1.80 espie 1119: return;
1.66 espie 1120: } else {
1.80 espie 1121: /*
1122: * Job may be run locally.
1123: */
1.84 espie 1124: debug_printf("running locally\n");
1.1 deraadt 1125: }
1.66 espie 1126: JobExec(job, argv);
1127: } else {
1.1 deraadt 1128: /*
1.66 espie 1129: * The job has stopped and needs to be restarted. Why it
1130: * stopped, we don't know...
1.1 deraadt 1131: */
1.84 espie 1132: debug_printf("Resuming %s...", job->node->name);
1.83 espie 1133: if ((nJobs < maxJobs || ((job->flags & JOB_SPECIAL) &&
1134: maxJobs == 0)) && nJobs != maxJobs) {
1.66 espie 1135: /*
1.79 espie 1136: * If we haven't reached the concurrency limit already
1.83 espie 1137: * (or maxJobs is 0), it's ok to resume the job.
1.66 espie 1138: */
1139: bool error;
1140: int status;
1141:
1142: error = KILL(job->pid, SIGCONT) != 0;
1143:
1144: if (!error) {
1145: /*
1146: * Make sure the user knows we've continued the
1147: * beast and actually put the thing in the job
1148: * table.
1149: */
1150: job->flags |= JOB_CONTINUING;
1151: W_SETTERMSIG(&status, SIGCONT);
1152: JobFinish(job, &status);
1153:
1154: job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
1.84 espie 1155: debug_printf("done\n");
1.66 espie 1156: } else {
1157: Error("couldn't resume %s: %s",
1158: job->node->name, strerror(errno));
1159: status = 0;
1160: W_SETEXITSTATUS(&status, 1);
1161: JobFinish(job, &status);
1162: }
1163: } else {
1164: /*
1165: * Job cannot be restarted. Mark the table as full and
1166: * place the job back on the list of stopped jobs.
1167: */
1.84 espie 1168: debug_printf("table full\n");
1.66 espie 1169: Lst_AtFront(&stoppedJobs, job);
1170: jobFull = true;
1.84 espie 1171: debug_printf("Job queue is full.\n");
1.1 deraadt 1172: }
1173: }
1174: }
1175:
1176: /*-
1177: *-----------------------------------------------------------------------
1178: * JobStart --
1179: * Start a target-creation process going for the target described
1.6 millert 1180: * by the graph node gn.
1.1 deraadt 1181: *
1182: * Results:
1183: * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1184: * if there isn't actually anything left to do for the job and
1185: * JOB_RUNNING if the job has been started.
1186: *
1187: * Side Effects:
1188: * A new Job node is created and added to the list of running
1189: * jobs. PMake is forked and a child shell created.
1190: *-----------------------------------------------------------------------
1191: */
1192: static int
1.78 espie 1193: JobStart(GNode *gn, /* target to create */
1.86 espie 1194: int flags) /* flags for the job to override normal ones.
1195: * e.g. JOB_SPECIAL */
1.78 espie 1196: {
1197: Job *job; /* new job descriptor */
1198: char *argv[4]; /* Argument vector to shell */
1199: bool cmdsOK; /* true if the nodes commands were all right */
1200: bool noExec; /* Set true if we decide not to run the job */
1.87 espie 1201: int fd[2];
1.66 espie 1202:
1.86 espie 1203: job = emalloc(sizeof(Job));
1204: if (job == NULL) {
1205: Punt("JobStart out of memory");
1.1 deraadt 1206: }
1207:
1.66 espie 1208: job->node = gn;
1209: job->tailCmds = NULL;
1.1 deraadt 1210:
1211: /*
1.66 espie 1212: * Set the initial value of the flags for this job based on the global
1213: * ones and the node's attributes... Any flags supplied by the caller
1214: * are also added to the field.
1.1 deraadt 1215: */
1.87 espie 1216: job->flags = flags;
1.66 espie 1217: if (Targ_Ignore(gn)) {
1218: job->flags |= JOB_IGNERR;
1219: }
1220: if (Targ_Silent(gn)) {
1221: job->flags |= JOB_SILENT;
1.1 deraadt 1222: }
1.6 millert 1223:
1.1 deraadt 1224: /*
1.66 espie 1225: * Check the commands now so any attributes from .DEFAULT have a chance
1226: * to migrate to the node
1.1 deraadt 1227: */
1.87 espie 1228: cmdsOK = Job_CheckCommands(gn, Error);
1.1 deraadt 1229:
1230: /*
1.66 espie 1231: * If the -n flag wasn't given, we open up OUR (not the child's)
1232: * temporary file to stuff commands in it. The thing is rd/wr so we
1233: * don't need to reopen it to feed it to the shell. If the -n flag
1234: * *was* given, we just set the file to be stdout. Cute, huh?
1.1 deraadt 1235: */
1.66 espie 1236: if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) {
1237: /*
1238: * We're serious here, but if the commands were bogus, we're
1239: * also dead...
1240: */
1241: if (!cmdsOK) {
1242: DieHorribly();
1243: }
1.6 millert 1244:
1.88 espie 1245: job->cmdFILE = new_command_file();
1.66 espie 1246: if (job->cmdFILE == NULL) {
1.88 espie 1247: Punt("Error creating command file");
1.66 espie 1248: }
1.90 espie 1249: (void)fcntl(fileno(job->cmdFILE), F_SETFD, FD_CLOEXEC);
1.66 espie 1250: /*
1251: * Send the commands to the command file, flush all its buffers
1252: * then rewind and remove the thing.
1253: */
1254: noExec = false;
1255:
1256: /*
1.85 espie 1257: * We can do all the commands at once. hooray for
1258: * sanity
1.66 espie 1259: */
1.85 espie 1260: numCommands = 0;
1261: Lst_ForEachNodeWhile(&gn->commands, JobPrintCommand,
1262: job);
1.66 espie 1263:
1.85 espie 1264: /*
1265: * If we didn't print out any commands to the shell
1266: * script, there's not much point in executing the
1267: * shell, is there?
1268: */
1269: if (numCommands == 0) {
1270: noExec = true;
1.66 espie 1271: }
1272: } else if (noExecute) {
1273: /*
1274: * Not executing anything -- just print all the commands to
1275: * stdout in one fell swoop. This will still set up
1276: * job->tailCmds correctly.
1277: */
1278: if (lastNode != gn) {
1279: MESSAGE(stdout, gn);
1280: lastNode = gn;
1281: }
1282: job->cmdFILE = stdout;
1283: /*
1284: * Only print the commands if they're ok, but don't die if
1285: * they're not -- just let the user know they're bad and keep
1286: * going. It doesn't do any harm in this case and may do some
1287: * good.
1288: */
1289: if (cmdsOK) {
1.68 espie 1290: Lst_ForEachNodeWhile(&gn->commands, JobPrintCommand,
1.66 espie 1291: job);
1292: }
1293: /*
1294: * Don't execute the shell, thank you.
1295: */
1.41 espie 1296: noExec = true;
1.66 espie 1297: } else {
1298: /*
1299: * Just touch the target and note that no shell should be
1300: * executed. Set cmdFILE to stdout to make life easier. Check
1301: * the commands, too, but don't die if they're no good -- it
1302: * does no harm to keep working up the graph.
1.30 espie 1303: */
1.66 espie 1304: job->cmdFILE = stdout;
1.87 espie 1305: Job_Touch(gn, job->flags & JOB_SILENT);
1.41 espie 1306: noExec = true;
1.1 deraadt 1307: }
1.66 espie 1308:
1.1 deraadt 1309: /*
1.66 espie 1310: * If we're not supposed to execute a shell, don't.
1.1 deraadt 1311: */
1.66 espie 1312: if (noExec) {
1313: /*
1314: * Unlink and close the command file if we opened one
1315: */
1316: if (job->cmdFILE != stdout) {
1317: if (job->cmdFILE != NULL)
1318: (void)fclose(job->cmdFILE);
1319: } else {
1320: (void)fflush(stdout);
1321: }
1.1 deraadt 1322:
1.66 espie 1323: /*
1324: * We only want to work our way up the graph if we aren't here
1325: * because the commands for the job were no good.
1326: */
1327: if (cmdsOK) {
1328: if (aborting == 0) {
1.68 espie 1329: Lst_ForEachFrom(job->tailCmds, JobSaveCommand,
1.66 espie 1330: job->node);
1331: Make_Update(job->node);
1332: }
1333: free(job);
1334: return JOB_FINISHED;
1335: } else {
1336: free(job);
1337: return JOB_ERROR;
1338: }
1.1 deraadt 1339: } else {
1.66 espie 1340: (void)fflush(job->cmdFILE);
1.1 deraadt 1341: }
1342:
1343: /*
1.66 espie 1344: * Set up the control arguments to the shell. This is based on the flags
1345: * set earlier for this job.
1.1 deraadt 1346: */
1.66 espie 1347: JobMakeArgv(job, argv);
1.1 deraadt 1348:
1.90 espie 1349: /* Create the pipe by which we'll get the shell's output.
1.66 espie 1350: */
1.87 espie 1351: if (pipe(fd) == -1)
1352: Punt("Cannot create pipe: %s", strerror(errno));
1353: job->inPipe = fd[0];
1354: job->outPipe = fd[1];
1.90 espie 1355: (void)fcntl(job->inPipe, F_SETFD, FD_CLOEXEC);
1356: (void)fcntl(job->outPipe, F_SETFD, FD_CLOEXEC);
1.1 deraadt 1357:
1.83 espie 1358: if (nJobs >= maxJobs && !(job->flags & JOB_SPECIAL) &&
1359: maxJobs != 0) {
1.79 espie 1360: /*
1361: * The job can only be run locally, but we've hit the limit of
1362: * local concurrency, so put the job on hold until some other
1363: * job finishes. Note that the special jobs (.BEGIN, .INTERRUPT
1364: * and .END) may be run locally even when the local limit has
1.83 espie 1365: * been reached (e.g. when maxJobs == 0), though they will be
1.79 espie 1366: * exported if at all possible. In addition, any target marked
1.83 espie 1367: * with .NOEXPORT will be run locally if maxJobs is 0.
1.66 espie 1368: */
1369: jobFull = true;
1.6 millert 1370:
1.84 espie 1371: debug_printf("Can only run job locally.\n");
1.66 espie 1372: job->flags |= JOB_RESTART;
1373: Lst_AtEnd(&stoppedJobs, job);
1.79 espie 1374: } else {
1.83 espie 1375: if (nJobs >= maxJobs) {
1.79 espie 1376: /*
1377: * If we're running this job locally as a special case
1378: * (see above), at least say the table is full.
1379: */
1380: jobFull = true;
1.84 espie 1381: debug_printf("Local job queue is full.\n");
1.79 espie 1382: }
1383: JobExec(job, argv);
1.1 deraadt 1384: }
1.66 espie 1385: return JOB_RUNNING;
1.1 deraadt 1386: }
1387:
1.6 millert 1388: static char *
1.56 espie 1389: JobOutput(Job *job, char *cp, char *endp, int msg)
1.2 deraadt 1390: {
1.66 espie 1391: char *ecp;
1.2 deraadt 1392:
1.74 espie 1393: ecp = strstr(cp, SHELL_ECHO_OFF);
1394: while (ecp != NULL) {
1395: if (cp != ecp) {
1396: *ecp = '\0';
1397: if (msg && job->node != lastNode) {
1398: MESSAGE(stdout, job->node);
1399: lastNode = job->node;
1.66 espie 1400: }
1.74 espie 1401: /*
1.78 espie 1402: * The only way there wouldn't be a newline after
1403: * this line is if it were the last in the buffer.
1404: * however, since the non-printable comes after it,
1405: * there must be a newline, so we don't print one.
1.74 espie 1406: */
1407: (void)fprintf(stdout, "%s", cp);
1408: (void)fflush(stdout);
1409: }
1410: cp = ecp + strlen(SHELL_ECHO_OFF);
1411: if (cp != endp) {
1412: /*
1.78 espie 1413: * Still more to print, look again after skipping
1414: * the whitespace following the non-printable
1415: * command....
1.74 espie 1416: */
1417: cp++;
1.78 espie 1418: while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
1.66 espie 1419: cp++;
1420: }
1.74 espie 1421: ecp = strstr(cp, SHELL_ECHO_OFF);
1422: } else {
1423: return cp;
1.2 deraadt 1424: }
1425: }
1.66 espie 1426: return cp;
1.2 deraadt 1427: }
1428:
1.1 deraadt 1429: /*-
1430: *-----------------------------------------------------------------------
1.40 espie 1431: * JobDoOutput --
1.89 espie 1432: * This functions is called whenever there is something to read on the
1433: * pipe. We collect more output from the given job and store it in the
1434: * job's outBuf. If this makes up a line, we print it tagged by the job's
1435: * identifier, as necessary.
1436: * We also keep our figurative eye out for the
1.1 deraadt 1437: * 'noPrint' line for the shell from which the output came. If
1438: * we recognize a line, we don't print it. If the command is not
1.6 millert 1439: * alone on the line (the character after it is not \0 or \n), we
1.1 deraadt 1440: * do print whatever follows it.
1441: *
1442: * Side Effects:
1443: * curPos may be shifted as may the contents of outBuf.
1444: *-----------------------------------------------------------------------
1445: */
1.48 espie 1446: static void
1.66 espie 1447: JobDoOutput(Job *job, /* the job whose output needs printing */
1448: bool finish) /* true if this is the last time we'll be
1449: * called for this job */
1450: {
1.78 espie 1451: bool gotNL = false; /* true if got a newline */
1.66 espie 1452: bool fbuf; /* true if our buffer filled up */
1453: int nr; /* number of bytes read */
1454: int i; /* auxiliary index into outBuf */
1.78 espie 1455: int max; /* limit for i (end of current data) */
1456: int nRead; /* (Temporary) number of bytes read */
1.1 deraadt 1457:
1.76 espie 1458: /*
1459: * Read as many bytes as will fit in the buffer.
1460: */
1.1 deraadt 1461: end_loop:
1.76 espie 1462: gotNL = false;
1463: fbuf = false;
1.6 millert 1464:
1.76 espie 1465: nRead = read(job->inPipe, &job->outBuf[job->curPos],
1466: JOB_BUFSIZE - job->curPos);
1467: if (nRead == -1) {
1468: if (DEBUG(JOB)) {
1469: perror("JobDoOutput(piperead)");
1.66 espie 1470: }
1.76 espie 1471: nr = 0;
1472: } else {
1473: nr = nRead;
1474: }
1.1 deraadt 1475:
1.76 espie 1476: /*
1.78 espie 1477: * If we hit the end-of-file (the job is dead), we must flush its
1478: * remaining output, so pretend we read a newline if there's any
1479: * output remaining in the buffer.
1480: * Also clear the 'finish' flag so we stop looping.
1.76 espie 1481: */
1482: if (nr == 0 && job->curPos != 0) {
1483: job->outBuf[job->curPos] = '\n';
1484: nr = 1;
1485: finish = false;
1486: } else if (nr == 0) {
1487: finish = false;
1488: }
1.6 millert 1489:
1.76 espie 1490: /*
1.78 espie 1491: * Look for the last newline in the bytes we just got. If there is
1492: * one, break out of the loop with 'i' as its index and gotNL set
1493: * true.
1.76 espie 1494: */
1495: max = job->curPos + nr;
1496: for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
1497: if (job->outBuf[i] == '\n') {
1498: gotNL = true;
1499: break;
1500: } else if (job->outBuf[i] == '\0') {
1501: /*
1.89 espie 1502: * To be fixed: don't use printf, it stops at NUL bytes.
1.76 espie 1503: */
1504: job->outBuf[i] = ' ';
1.66 espie 1505: }
1.76 espie 1506: }
1.6 millert 1507:
1.76 espie 1508: if (!gotNL) {
1509: job->curPos += nr;
1510: if (job->curPos == JOB_BUFSIZE) {
1.66 espie 1511: /*
1.78 espie 1512: * If we've run out of buffer space, we have no choice
1513: * but to print the stuff. sigh.
1.66 espie 1514: */
1.76 espie 1515: fbuf = true;
1516: i = job->curPos;
1517: }
1518: }
1519: if (gotNL || fbuf) {
1520: /*
1.78 espie 1521: * Need to send the output to the screen. Null terminate it
1522: * first, overwriting the newline character if there was one.
1523: * So long as the line isn't one we should filter (according
1524: * to the shell description), we print the line, preceded
1525: * by a target banner if this target isn't the same as the
1526: * one for which we last printed something.
1527: * The rest of the data in the buffer are then shifted down
1528: * to the start of the buffer and curPos is set accordingly.
1.76 espie 1529: */
1530: job->outBuf[i] = '\0';
1531: if (i >= job->curPos) {
1532: char *cp;
1.66 espie 1533:
1.78 espie 1534: cp = JobOutput(job, job->outBuf, &job->outBuf[i],
1535: false);
1.66 espie 1536:
1.76 espie 1537: /*
1.78 espie 1538: * There's still more in that thar buffer. This time,
1539: * though, we know there's no newline at the end, so we
1540: * add one of our own free will.
1.76 espie 1541: */
1542: if (*cp != '\0') {
1543: if (job->node != lastNode) {
1544: MESSAGE(stdout, job->node);
1545: lastNode = job->node;
1.66 espie 1546: }
1.76 espie 1547: (void)fprintf(stdout, "%s%s", cp,
1548: gotNL ? "\n" : "");
1549: (void)fflush(stdout);
1.66 espie 1550: }
1.76 espie 1551: }
1552: if (i < max - 1) {
1553: /* shift the remaining characters down */
1554: (void)memcpy(job->outBuf, &job->outBuf[i + 1],
1555: max - (i + 1));
1556: job->curPos = max - (i + 1);
1.66 espie 1557:
1.76 espie 1558: } else {
1.66 espie 1559: /*
1.78 espie 1560: * We have written everything out, so we just start over
1561: * from the start of the buffer. No copying. No nothing.
1.66 espie 1562: */
1.76 espie 1563: job->curPos = 0;
1.66 espie 1564: }
1.76 espie 1565: }
1566: if (finish) {
1.66 espie 1567: /*
1.78 espie 1568: * If the finish flag is true, we must loop until we hit
1569: * end-of-file on the pipe. This is guaranteed to happen
1570: * eventually since the other end of the pipe is now closed
1571: * (we closed it explicitly and the child has exited). When
1572: * we do get an EOF, finish will be set false and we'll fall
1573: * through and out.
1.76 espie 1574: */
1575: goto end_loop;
1.1 deraadt 1576: }
1577: }
1578:
1579: /*-
1580: *-----------------------------------------------------------------------
1581: * Job_CatchChildren --
1582: * Handle the exit of a child. Called from Make_Make.
1583: *
1584: * Side Effects:
1585: * The job descriptor is removed from the list of children.
1586: *
1587: * Notes:
1588: * We do waits, blocking or not, according to the wisdom of our
1589: * caller, until there are no more children to report. For each
1590: * job, call JobFinish to finish things off. This will take care of
1591: * putting jobs on the stoppedJobs queue.
1592: *-----------------------------------------------------------------------
1593: */
1594: void
1.76 espie 1595: Job_CatchChildren()
1.1 deraadt 1596: {
1.78 espie 1597: pid_t pid; /* pid of dead child */
1598: Job *job; /* job descriptor for dead child */
1599: LstNode jnode; /* list element for finding job */
1600: int status; /* Exit/termination status */
1.1 deraadt 1601:
1.66 espie 1602: /*
1603: * Don't even bother if we know there's no one around.
1604: */
1.83 espie 1605: if (nJobs == 0) {
1.66 espie 1606: return;
1.2 deraadt 1607: }
1.6 millert 1608:
1.76 espie 1609: while ((pid = waitpid((pid_t) -1, &status, WNOHANG|WUNTRACED)) > 0) {
1.93 espie 1610: handle_all_signals();
1.84 espie 1611: debug_printf("Process %ld exited or stopped.\n", (long)pid);
1.1 deraadt 1612:
1.66 espie 1613: jnode = Lst_Find(&jobs, JobCmpPid, &pid);
1.1 deraadt 1614:
1.18 espie 1615: if (jnode == NULL) {
1.68 espie 1616: if (WIFSIGNALED(status) &&
1.66 espie 1617: (WTERMSIG(status) == SIGCONT)) {
1618: jnode = Lst_Find(&stoppedJobs, JobCmpPid, &pid);
1619: if (jnode == NULL) {
1620: Error("Resumed child (%ld) not in table", (long)pid);
1621: continue;
1622: }
1623: job = (Job *)Lst_Datum(jnode);
1624: Lst_Remove(&stoppedJobs, jnode);
1625: } else {
1626: Error("Child (%ld) not in table?", (long)pid);
1627: continue;
1628: }
1629: } else {
1630: job = (Job *)Lst_Datum(jnode);
1631: Lst_Remove(&jobs, jnode);
1.67 espie 1632: nJobs--;
1.84 espie 1633: if (jobFull)
1634: debug_printf("Job queue is no longer full.\n");
1.66 espie 1635: jobFull = false;
1.1 deraadt 1636: }
1.66 espie 1637:
1638: JobFinish(job, &status);
1.1 deraadt 1639: }
1640: }
1641:
1642: /*-
1643: *-----------------------------------------------------------------------
1644: * Job_CatchOutput --
1645: * Catch the output from our children, if we're using
1646: * pipes do so. Otherwise just block time until we get a
1.6 millert 1647: * signal (most likely a SIGCHLD) since there's no point in
1.1 deraadt 1648: * just spinning when there's nothing to do and the reaping
1.6 millert 1649: * of a child can wait for a while.
1.1 deraadt 1650: *
1651: * Side Effects:
1652: * Output is read from pipes if we're piping.
1653: * -----------------------------------------------------------------------
1654: */
1655: void
1.56 espie 1656: Job_CatchOutput(void)
1.1 deraadt 1657: {
1.66 espie 1658: int nfds;
1659: struct timeval timeout;
1660: LstNode ln;
1661: Job *job;
1662:
1.76 espie 1663: int count = howmany(outputsn+1, NFDBITS) * sizeof(fd_mask);
1664: fd_set *readfdsp = malloc(count);
1.91 espie 1665:
1.77 espie 1666: (void)fflush(stdout);
1.76 espie 1667: if (readfdsp == NULL)
1668: return;
1669:
1670: memcpy(readfdsp, outputsp, count);
1671: timeout.tv_sec = SEL_SEC;
1672: timeout.tv_usec = SEL_USEC;
1.66 espie 1673:
1.91 espie 1674: nfds = select(outputsn+1, readfdsp, NULL, NULL, &timeout);
1.93 espie 1675: handle_all_signals();
1.91 espie 1676: if (nfds > 0) {
1.76 espie 1677: for (ln = Lst_First(&jobs); nfds && ln != NULL;
1678: ln = Lst_Adv(ln)) {
1679: job = (Job *)Lst_Datum(ln);
1680: if (FD_ISSET(job->inPipe, readfdsp)) {
1681: JobDoOutput(job, false);
1682: nfds--;
1.66 espie 1683: }
1.1 deraadt 1684: }
1685: }
1.76 espie 1686: free(readfdsp);
1.1 deraadt 1687: }
1688:
1689: /*-
1690: *-----------------------------------------------------------------------
1691: * Job_Make --
1692: * Start the creation of a target. Basically a front-end for
1693: * JobStart used by the Make module.
1694: *
1695: * Side Effects:
1696: * Another job is started.
1697: *-----------------------------------------------------------------------
1698: */
1699: void
1.56 espie 1700: Job_Make(GNode *gn)
1.1 deraadt 1701: {
1.86 espie 1702: (void)JobStart(gn, 0);
1.1 deraadt 1703: }
1704:
1.93 espie 1705: static void
1706: setup_signal(int sig)
1707: {
1708: if (signal(sig, SIG_IGN) != SIG_IGN) {
1709: (void)signal(sig, SigHandler);
1710: }
1711: }
1712:
1.94 ! espie 1713: static void
! 1714: setup_all_signals()
! 1715: {
! 1716: /*
! 1717: * Catch the four signals that POSIX specifies if they aren't ignored.
! 1718: * handle_signal will take care of calling JobInterrupt if appropriate.
! 1719: */
! 1720: setup_signal(SIGINT);
! 1721: setup_signal(SIGHUP);
! 1722: setup_signal(SIGQUIT);
! 1723: setup_signal(SIGTERM);
! 1724: /*
! 1725: * There are additional signals that need to be caught and passed if
! 1726: * either the export system wants to be told directly of signals or if
! 1727: * we're giving each job its own process group (since then it won't get
! 1728: * signals from the terminal driver as we own the terminal)
! 1729: */
! 1730: #if defined(USE_PGRP)
! 1731: setup_signal(SIGTSTP);
! 1732: setup_signal(SIGTTOU);
! 1733: setup_signal(SIGTTIN);
! 1734: setup_signal(SIGWINCH);
! 1735: #endif
! 1736: }
! 1737:
1.1 deraadt 1738: /*-
1739: *-----------------------------------------------------------------------
1740: * Job_Init --
1741: * Initialize the process module
1742: *
1743: * Side Effects:
1744: * lists and counters are initialized
1745: *-----------------------------------------------------------------------
1746: */
1747: void
1.83 espie 1748: Job_Init(int maxproc)
1.1 deraadt 1749: {
1.66 espie 1750: Static_Lst_Init(&jobs);
1751: Static_Lst_Init(&stoppedJobs);
1752: maxJobs = maxproc;
1.79 espie 1753: nJobs = 0;
1.66 espie 1754: jobFull = false;
1755:
1756: aborting = 0;
1757: errors = 0;
1.40 espie 1758:
1.66 espie 1759: lastNode = NULL;
1.1 deraadt 1760:
1.66 espie 1761: if (maxJobs == 1) {
1762: /*
1763: * If only one job can run at a time, there's no need for a
1764: * banner, no is there?
1765: */
1766: targFmt = "";
1767: } else {
1768: targFmt = TARG_FMT;
1769: }
1.6 millert 1770:
1.78 espie 1771: if ((begin_node->type & OP_DUMMY) == 0) {
1.86 espie 1772: JobStart(begin_node, JOB_SPECIAL);
1.66 espie 1773: while (nJobs) {
1774: Job_CatchOutput();
1.76 espie 1775: Job_CatchChildren();
1.66 espie 1776: }
1.1 deraadt 1777: }
1778: }
1779:
1780: /*-
1781: *-----------------------------------------------------------------------
1782: * Job_Full --
1783: * See if the job table is full. It is considered full if it is OR
1784: * if we are in the process of aborting OR if we have
1785: * reached/exceeded our local quota. This prevents any more jobs
1786: * from starting up.
1787: *
1788: * Results:
1.41 espie 1789: * true if the job table is full, false otherwise
1.1 deraadt 1790: *-----------------------------------------------------------------------
1791: */
1.41 espie 1792: bool
1.56 espie 1793: Job_Full(void)
1.1 deraadt 1794: {
1.66 espie 1795: return aborting || jobFull;
1.1 deraadt 1796: }
1797:
1798: /*-
1799: *-----------------------------------------------------------------------
1800: * Job_Empty --
1.40 espie 1801: * See if the job table is empty. Because the local concurrency may
1.1 deraadt 1802: * be set to 0, it is possible for the job table to become empty,
1803: * while the list of stoppedJobs remains non-empty. In such a case,
1804: * we want to restart as many jobs as we can.
1805: *
1806: * Results:
1.41 espie 1807: * true if it is. false if it ain't.
1.1 deraadt 1808: * -----------------------------------------------------------------------
1809: */
1.41 espie 1810: bool
1.56 espie 1811: Job_Empty(void)
1.1 deraadt 1812: {
1.66 espie 1813: if (nJobs == 0) {
1814: if (!Lst_IsEmpty(&stoppedJobs) && !aborting) {
1815: /*
1816: * The job table is obviously not full if it has no
1817: * jobs in it...Try and restart the stopped jobs.
1818: */
1819: jobFull = false;
1820: JobRestartJobs();
1821: return false;
1822: } else {
1823: return true;
1824: }
1.1 deraadt 1825: } else {
1.66 espie 1826: return false;
1.1 deraadt 1827: }
1828: }
1829:
1830: /*-
1831: *-----------------------------------------------------------------------
1832: * JobInterrupt --
1833: * Handle the receipt of an interrupt.
1834: *
1835: * Side Effects:
1836: * All children are killed. Another job will be started if the
1837: * .INTERRUPT target was given.
1838: *-----------------------------------------------------------------------
1839: */
1840: static void
1.56 espie 1841: JobInterrupt(int runINTERRUPT, /* Non-zero if commands for the .INTERRUPT
1.1 deraadt 1842: * target should be executed */
1.66 espie 1843: int signo) /* signal received */
1.1 deraadt 1844: {
1.66 espie 1845: LstNode ln; /* element in job table */
1.78 espie 1846: Job *job; /* job descriptor in that element */
1.66 espie 1847:
1848: aborting = ABORT_INTERRUPT;
1849:
1850: for (ln = Lst_First(&jobs); ln != NULL; ln = Lst_Adv(ln)) {
1851: job = (Job *)Lst_Datum(ln);
1852:
1853: if (!Targ_Precious(job->node)) {
1854: const char *file = job->node->path == NULL ?
1855: job->node->name : job->node->path;
1856: if (!noExecute && eunlink(file) != -1) {
1857: Error("*** %s removed", file);
1858: }
1859: }
1860: if (job->pid) {
1.84 espie 1861: debug_printf("JobInterrupt passing signal to "
1862: "child %ld.\n", (long)job->pid);
1.66 espie 1863: KILL(job->pid, signo);
1864: }
1.2 deraadt 1865: }
1.1 deraadt 1866:
1.66 espie 1867: if (runINTERRUPT && !touchFlag) {
1.78 espie 1868: if ((interrupt_node->type & OP_DUMMY) == 0) {
1.66 espie 1869: ignoreErrors = false;
1870:
1.86 espie 1871: JobStart(interrupt_node, JOB_IGNDOTS);
1.66 espie 1872: while (nJobs) {
1873: Job_CatchOutput();
1.76 espie 1874: Job_CatchChildren();
1.66 espie 1875: }
1876: }
1.1 deraadt 1877: }
1.66 espie 1878: exit(signo);
1.1 deraadt 1879: }
1880:
1881: /*
1882: *-----------------------------------------------------------------------
1.12 espie 1883: * Job_Finish --
1.1 deraadt 1884: * Do final processing such as the running of the commands
1.6 millert 1885: * attached to the .END target.
1.1 deraadt 1886: *
1887: * Results:
1888: * Number of errors reported.
1.40 espie 1889: *
1.1 deraadt 1890: *-----------------------------------------------------------------------
1891: */
1892: int
1.56 espie 1893: Job_Finish(void)
1.1 deraadt 1894: {
1.78 espie 1895: if (end_node != NULL && !Lst_IsEmpty(&end_node->commands)) {
1.66 espie 1896: if (errors) {
1897: Error("Errors reported so .END ignored");
1898: } else {
1.86 espie 1899: JobStart(end_node, JOB_SPECIAL | JOB_IGNDOTS);
1.1 deraadt 1900:
1.66 espie 1901: while (nJobs) {
1902: Job_CatchOutput();
1.76 espie 1903: Job_CatchChildren();
1.66 espie 1904: }
1905: }
1.1 deraadt 1906: }
1.66 espie 1907: return errors;
1.1 deraadt 1908: }
1909:
1.41 espie 1910: #ifdef CLEANUP
1.12 espie 1911: void
1.56 espie 1912: Job_End(void)
1.12 espie 1913: {
1.41 espie 1914: }
1.13 espie 1915: #endif
1.40 espie 1916:
1.1 deraadt 1917: /*-
1918: *-----------------------------------------------------------------------
1919: * Job_Wait --
1920: * Waits for all running jobs to finish and returns. Sets 'aborting'
1921: * to ABORT_WAIT to prevent other jobs from starting.
1922: *
1923: * Side Effects:
1924: * Currently running jobs finish.
1925: *
1926: *-----------------------------------------------------------------------
1927: */
1928: void
1.56 espie 1929: Job_Wait(void)
1.1 deraadt 1930: {
1.66 espie 1931: aborting = ABORT_WAIT;
1932: while (nJobs != 0) {
1933: Job_CatchOutput();
1.76 espie 1934: Job_CatchChildren();
1.66 espie 1935: }
1936: aborting = 0;
1.1 deraadt 1937: }
1938:
1939: /*-
1940: *-----------------------------------------------------------------------
1941: * Job_AbortAll --
1942: * Abort all currently running jobs without handling output or anything.
1943: * This function is to be called only in the event of a major
1944: * error. Most definitely NOT to be called from JobInterrupt.
1945: *
1946: * Side Effects:
1947: * All children are killed, not just the firstborn
1948: *-----------------------------------------------------------------------
1949: */
1950: void
1.56 espie 1951: Job_AbortAll(void)
1.1 deraadt 1952: {
1.66 espie 1953: LstNode ln; /* element in job table */
1954: Job *job; /* the job descriptor in that element */
1955: int foo;
1.6 millert 1956:
1.66 espie 1957: aborting = ABORT_ERROR;
1.6 millert 1958:
1.66 espie 1959: if (nJobs) {
1960: for (ln = Lst_First(&jobs); ln != NULL; ln = Lst_Adv(ln)) {
1961: job = (Job *)Lst_Datum(ln);
1962:
1963: /*
1964: * kill the child process with increasingly drastic
1965: * signals to make darn sure it's dead.
1966: */
1967: KILL(job->pid, SIGINT);
1968: KILL(job->pid, SIGKILL);
1969: }
1.1 deraadt 1970: }
1.6 millert 1971:
1.66 espie 1972: /*
1973: * Catch as many children as want to report in at first, then give up
1974: */
1975: while (waitpid(-1, &foo, WNOHANG) > 0)
1976: continue;
1.2 deraadt 1977: }
1.40 espie 1978:
1.2 deraadt 1979: /*-
1980: *-----------------------------------------------------------------------
1981: * JobRestartJobs --
1982: * Tries to restart stopped jobs if there are slots available.
1983: * Note that this tries to restart them regardless of pending errors.
1984: * It's not good to leave stopped jobs lying around!
1985: *
1986: * Side Effects:
1987: * Resumes(and possibly migrates) jobs.
1988: *-----------------------------------------------------------------------
1989: */
1990: static void
1.56 espie 1991: JobRestartJobs(void)
1.2 deraadt 1992: {
1.66 espie 1993: Job *job;
1.19 espie 1994:
1.66 espie 1995: while (!jobFull && (job = (Job *)Lst_DeQueue(&stoppedJobs)) != NULL) {
1.84 espie 1996: debug_printf("Job queue is not full. "
1997: "Restarting a stopped job.\n");
1.66 espie 1998: JobRestart(job);
1.2 deraadt 1999: }
1.1 deraadt 2000: }
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