Commit | Line | Data |
---|---|---|
9320ab9e KB |
1 | /* |
2 | * Copyright (c) 1988, 1989, 1990 The Regents of the University of California. | |
ab950546 KB |
3 | * Copyright (c) 1988, 1989 by Adam de Boor |
4 | * Copyright (c) 1989 by Berkeley Softworks | |
9320ab9e KB |
5 | * All rights reserved. |
6 | * | |
7 | * This code is derived from software contributed to Berkeley by | |
8 | * Adam de Boor. | |
ab950546 | 9 | * |
87198c0c | 10 | * %sccs.include.redist.c% |
9320ab9e KB |
11 | */ |
12 | ||
13 | #ifndef lint | |
87198c0c | 14 | static char sccsid[] = "@(#)job.c 5.13 (Berkeley) %G%"; |
9320ab9e KB |
15 | #endif /* not lint */ |
16 | ||
17 | /*- | |
18 | * job.c -- | |
19 | * handle the creation etc. of our child processes. | |
ab950546 KB |
20 | * |
21 | * Interface: | |
22 | * Job_Make Start the creation of the given target. | |
23 | * | |
24 | * Job_CatchChildren Check for and handle the termination of any | |
25 | * children. This must be called reasonably | |
26 | * frequently to keep the whole make going at | |
27 | * a decent clip, since job table entries aren't | |
28 | * removed until their process is caught this way. | |
29 | * Its single argument is TRUE if the function | |
30 | * should block waiting for a child to terminate. | |
31 | * | |
32 | * Job_CatchOutput Print any output our children have produced. | |
33 | * Should also be called fairly frequently to | |
34 | * keep the user informed of what's going on. | |
35 | * If no output is waiting, it will block for | |
36 | * a time given by the SEL_* constants, below, | |
37 | * or until output is ready. | |
38 | * | |
39 | * Job_Init Called to intialize this module. in addition, | |
40 | * any commands attached to the .BEGIN target | |
41 | * are executed before this function returns. | |
42 | * Hence, the makefile must have been parsed | |
43 | * before this function is called. | |
44 | * | |
45 | * Job_Full Return TRUE if the job table is filled. | |
46 | * | |
47 | * Job_Empty Return TRUE if the job table is completely | |
48 | * empty. | |
49 | * | |
50 | * Job_ParseShell Given the line following a .SHELL target, parse | |
51 | * the line as a shell specification. Returns | |
52 | * FAILURE if the spec was incorrect. | |
53 | * | |
54 | * Job_End Perform any final processing which needs doing. | |
55 | * This includes the execution of any commands | |
56 | * which have been/were attached to the .END | |
57 | * target. It should only be called when the | |
58 | * job table is empty. | |
59 | * | |
60 | * Job_AbortAll Abort all currently running jobs. It doesn't | |
61 | * handle output or do anything for the jobs, | |
62 | * just kills them. It should only be called in | |
63 | * an emergency, as it were. | |
64 | * | |
65 | * Job_CheckCommands Verify that the commands for a target are | |
66 | * ok. Provide them if necessary and possible. | |
67 | * | |
68 | * Job_Touch Update a target without really updating it. | |
69 | * | |
70 | * Job_Wait Wait for all currently-running jobs to finish. | |
71 | */ | |
ab950546 | 72 | |
aabb6217 KB |
73 | #include "make.h" |
74 | #include <sys/signal.h> | |
75 | #include <sys/stat.h> | |
76 | #include <sys/file.h> | |
77 | #include <sys/time.h> | |
78 | #include <sys/wait.h> | |
79 | #include <fcntl.h> | |
80 | #include <errno.h> | |
81 | #include <stdio.h> | |
7af1139d | 82 | #include <string.h> |
aabb6217 KB |
83 | #include "job.h" |
84 | #include "pathnames.h" | |
85 | ||
ab950546 | 86 | extern int errno; |
ab950546 | 87 | |
ab950546 KB |
88 | /* |
89 | * error handling variables | |
90 | */ | |
91 | int errors = 0; /* number of errors reported */ | |
92 | int aborting = 0; /* why is the make aborting? */ | |
93 | #define ABORT_ERROR 1 /* Because of an error */ | |
94 | #define ABORT_INTERRUPT 2 /* Because it was interrupted */ | |
95 | #define ABORT_WAIT 3 /* Waiting for jobs to finish */ | |
96 | ||
97 | ||
98 | /* | |
99 | * post-make command processing. The node postCommands is really just the | |
100 | * .END target but we keep it around to avoid having to search for it | |
101 | * all the time. | |
102 | */ | |
103 | static GNode *postCommands; /* node containing commands to execute when | |
104 | * everything else is done */ | |
105 | static int numCommands; /* The number of commands actually printed | |
106 | * for a target. Should this number be | |
107 | * 0, no shell will be executed. */ | |
108 | ||
109 | ||
110 | /* | |
111 | * Return values from JobStart. | |
112 | */ | |
113 | #define JOB_RUNNING 0 /* Job is running */ | |
114 | #define JOB_ERROR 1 /* Error in starting the job */ | |
115 | #define JOB_FINISHED 2 /* The job is already finished */ | |
116 | #define JOB_STOPPED 3 /* The job is stopped */ | |
117 | ||
118 | /* | |
119 | * tfile is the name of a file into which all shell commands are put. It is | |
120 | * used over by removing it before the child shell is executed. The XXXXX in | |
121 | * the string are replaced by the pid of the make process in a 5-character | |
122 | * field with leading zeroes. | |
123 | */ | |
124 | static char tfile[] = TMPPAT; | |
125 | ||
126 | ||
127 | /* | |
128 | * Descriptions for various shells. | |
129 | */ | |
130 | static Shell shells[] = { | |
131 | /* | |
132 | * CSH description. The csh can do echo control by playing | |
133 | * with the setting of the 'echo' shell variable. Sadly, | |
134 | * however, it is unable to do error control nicely. | |
135 | */ | |
136 | { | |
137 | "csh", | |
138 | TRUE, "unset verbose", "set verbose", "unset verbose", 10, | |
139 | FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"", | |
140 | "v", "e", | |
141 | }, | |
142 | /* | |
143 | * SH description. Echo control is also possible and, under | |
144 | * sun UNIX anyway, one can even control error checking. | |
145 | */ | |
146 | { | |
147 | "sh", | |
148 | TRUE, "set -", "set -v", "set -", 5, | |
ab950546 | 149 | FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n", |
ab950546 KB |
150 | "v", "e", |
151 | }, | |
152 | /* | |
153 | * UNKNOWN. | |
154 | */ | |
155 | { | |
156 | (char *)0, | |
157 | FALSE, (char *)0, (char *)0, (char *)0, 0, | |
158 | FALSE, (char *)0, (char *)0, | |
159 | (char *)0, (char *)0, | |
160 | } | |
161 | }; | |
162 | Shell *commandShell = &shells[DEFSHELL]; /* this is the shell to | |
163 | * which we pass all | |
164 | * commands in the Makefile. | |
165 | * It is set by the | |
166 | * Job_ParseShell function */ | |
167 | char *shellPath = (char *) NULL, /* full pathname of | |
168 | * executable image */ | |
169 | *shellName; /* last component of shell */ | |
170 | ||
171 | ||
172 | static int maxJobs; /* The most children we can run at once */ | |
173 | static int maxLocal; /* The most local ones we can have */ | |
174 | int nJobs; /* The number of children currently running */ | |
175 | int nLocal; /* The number of local children */ | |
176 | Lst jobs; /* The structures that describe them */ | |
177 | Boolean jobFull; /* Flag to tell when the job table is full. It | |
178 | * is set TRUE when (1) the total number of | |
179 | * running jobs equals the maximum allowed or | |
180 | * (2) a job can only be run locally, but | |
181 | * nLocal equals maxLocal */ | |
182 | #ifndef RMT_WILL_WATCH | |
183 | static fd_set outputs; /* Set of descriptors of pipes connected to | |
184 | * the output channels of children */ | |
185 | #endif | |
186 | ||
187 | GNode *lastNode; /* The node for which output was most recently | |
188 | * produced. */ | |
189 | char *targFmt; /* Format string to use to head output from a | |
190 | * job when it's not the most-recent job heard | |
191 | * from */ | |
192 | #define TARG_FMT "--- %s ---\n" /* Default format */ | |
193 | ||
194 | /* | |
195 | * When JobStart attempts to run a job remotely but can't, and isn't allowed | |
196 | * to run the job locally, or when Job_CatchChildren detects a job that has | |
197 | * been migrated home, the job is placed on the stoppedJobs queue to be run | |
198 | * when the next job finishes. | |
199 | */ | |
200 | Lst stoppedJobs; /* Lst of Job structures describing | |
201 | * jobs that were stopped due to concurrency | |
202 | * limits or migration home */ | |
203 | ||
204 | ||
ab950546 KB |
205 | # if defined(USE_PGRP) |
206 | #define KILL(pid,sig) killpg((pid),(sig)) | |
207 | # else | |
208 | #define KILL(pid,sig) kill((pid),(sig)) | |
209 | # endif | |
ab950546 KB |
210 | |
211 | static void JobRestart(); | |
212 | static int JobStart(); | |
213 | static void JobInterrupt(); | |
21859cc6 | 214 | |
ab950546 KB |
215 | /*- |
216 | *----------------------------------------------------------------------- | |
217 | * JobCondPassSig -- | |
218 | * Pass a signal to a job if the job is remote or if USE_PGRP | |
219 | * is defined. | |
220 | * | |
221 | * Results: | |
222 | * === 0 | |
223 | * | |
224 | * Side Effects: | |
225 | * None, except the job may bite it. | |
226 | * | |
227 | *----------------------------------------------------------------------- | |
228 | */ | |
229 | static int | |
230 | JobCondPassSig(job, signo) | |
231 | Job *job; /* Job to biff */ | |
232 | int signo; /* Signal to send it */ | |
233 | { | |
234 | #ifdef RMT_WANTS_SIGNALS | |
235 | if (job->flags & JOB_REMOTE) { | |
236 | (void)Rmt_Signal(job, signo); | |
237 | } else { | |
238 | KILL(job->pid, signo); | |
239 | } | |
240 | #else | |
241 | /* | |
242 | * Assume that sending the signal to job->pid will signal any remote | |
243 | * job as well. | |
244 | */ | |
245 | KILL(job->pid, signo); | |
246 | #endif | |
247 | return(0); | |
248 | } | |
249 | ||
250 | /*- | |
251 | *----------------------------------------------------------------------- | |
252 | * JobPassSig -- | |
253 | * Pass a signal on to all remote jobs and to all local jobs if | |
254 | * USE_PGRP is defined, then die ourselves. | |
255 | * | |
256 | * Results: | |
257 | * None. | |
258 | * | |
259 | * Side Effects: | |
260 | * We die by the same signal. | |
261 | * | |
262 | *----------------------------------------------------------------------- | |
263 | */ | |
264 | static void | |
265 | JobPassSig(signo) | |
266 | int signo; /* The signal number we've received */ | |
267 | { | |
268 | int mask; | |
269 | ||
270 | Lst_ForEach(jobs, JobCondPassSig, (ClientData)signo); | |
271 | ||
272 | /* | |
273 | * Deal with proper cleanup based on the signal received. We only run | |
274 | * the .INTERRUPT target if the signal was in fact an interrupt. The other | |
275 | * three termination signals are more of a "get out *now*" command. | |
276 | */ | |
277 | if (signo == SIGINT) { | |
278 | JobInterrupt(TRUE); | |
279 | } else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) { | |
280 | JobInterrupt(FALSE); | |
281 | } | |
282 | ||
283 | /* | |
284 | * Leave gracefully if SIGQUIT, rather than core dumping. | |
285 | */ | |
286 | if (signo == SIGQUIT) { | |
287 | Finish(); | |
288 | } | |
289 | ||
290 | /* | |
291 | * Send ourselves the signal now we've given the message to everyone else. | |
292 | * Note we block everything else possible while we're getting the signal. | |
293 | * This ensures that all our jobs get continued when we wake up before | |
294 | * we take any other signal. | |
295 | */ | |
296 | mask = sigblock(0); | |
297 | (void) sigsetmask(~0 & ~(1 << (signo-1))); | |
298 | signal(signo, SIG_DFL); | |
299 | ||
300 | kill(getpid(), signo); | |
301 | ||
302 | Lst_ForEach(jobs, JobCondPassSig, (ClientData)SIGCONT); | |
303 | ||
304 | sigsetmask(mask); | |
305 | signal(signo, JobPassSig); | |
306 | ||
307 | } | |
21859cc6 | 308 | |
ab950546 KB |
309 | /*- |
310 | *----------------------------------------------------------------------- | |
311 | * JobCmpPid -- | |
312 | * Compare the pid of the job with the given pid and return 0 if they | |
313 | * are equal. This function is called from Job_CatchChildren via | |
314 | * Lst_Find to find the job descriptor of the finished job. | |
315 | * | |
316 | * Results: | |
317 | * 0 if the pid's match | |
318 | * | |
319 | * Side Effects: | |
320 | * None | |
321 | *----------------------------------------------------------------------- | |
322 | */ | |
323 | static int | |
324 | JobCmpPid (job, pid) | |
325 | int pid; /* process id desired */ | |
326 | Job *job; /* job to examine */ | |
327 | { | |
328 | return (pid - job->pid); | |
329 | } | |
21859cc6 | 330 | |
ab950546 KB |
331 | /*- |
332 | *----------------------------------------------------------------------- | |
333 | * JobPrintCommand -- | |
334 | * Put out another command for the given job. If the command starts | |
335 | * with an @ or a - we process it specially. In the former case, | |
336 | * so long as the -s and -n flags weren't given to make, we stick | |
337 | * a shell-specific echoOff command in the script. In the latter, | |
338 | * we ignore errors for the entire job, unless the shell has error | |
339 | * control. | |
340 | * If the command is just "..." we take all future commands for this | |
341 | * job to be commands to be executed once the entire graph has been | |
342 | * made and return non-zero to signal that the end of the commands | |
343 | * was reached. These commands are later attached to the postCommands | |
344 | * node and executed by Job_End when all things are done. | |
345 | * This function is called from JobStart via Lst_ForEach. | |
346 | * | |
347 | * Results: | |
348 | * Always 0, unless the command was "..." | |
349 | * | |
350 | * Side Effects: | |
351 | * If the command begins with a '-' and the shell has no error control, | |
352 | * the JOB_IGNERR flag is set in the job descriptor. | |
353 | * If the command is "..." and we're not ignoring such things, | |
354 | * tailCmds is set to the successor node of the cmd. | |
355 | * numCommands is incremented if the command is actually printed. | |
356 | *----------------------------------------------------------------------- | |
357 | */ | |
358 | static int | |
359 | JobPrintCommand (cmd, job) | |
360 | char *cmd; /* command string to print */ | |
361 | Job *job; /* job for which to print it */ | |
362 | { | |
363 | Boolean noSpecials; /* true if we shouldn't worry about | |
364 | * inserting special commands into | |
365 | * the input stream. */ | |
366 | Boolean shutUp = FALSE; /* true if we put a no echo command | |
367 | * into the command file */ | |
368 | Boolean errOff = FALSE; /* true if we turned error checking | |
369 | * off before printing the command | |
370 | * and need to turn it back on */ | |
371 | char *cmdTemplate; /* Template to use when printing the | |
372 | * command */ | |
373 | char *cmdStart; /* Start of expanded command */ | |
374 | LstNode cmdNode; /* Node for replacing the command */ | |
375 | ||
376 | noSpecials = (noExecute && ! (job->node->type & OP_MAKE)); | |
377 | ||
378 | if (strcmp (cmd, "...") == 0) { | |
379 | if ((job->flags & JOB_IGNDOTS) == 0) { | |
380 | job->tailCmds = Lst_Succ (Lst_Member (job->node->commands, | |
381 | (ClientData)cmd)); | |
382 | return (1); | |
383 | } | |
384 | return (0); | |
385 | } | |
386 | ||
387 | #define DBPRINTF(fmt, arg) if (DEBUG(JOB)) printf (fmt, arg); fprintf (job->cmdFILE, fmt, arg) | |
388 | ||
389 | numCommands += 1; | |
390 | ||
391 | /* | |
392 | * For debugging, we replace each command with the result of expanding | |
393 | * the variables in the command. | |
394 | */ | |
395 | cmdNode = Lst_Member (job->node->commands, (ClientData)cmd); | |
396 | cmdStart = cmd = Var_Subst (cmd, job->node, FALSE); | |
397 | Lst_Replace (cmdNode, (ClientData)cmdStart); | |
398 | ||
399 | cmdTemplate = "%s\n"; | |
400 | ||
401 | /* | |
402 | * Check for leading @' and -'s to control echoing and error checking. | |
403 | */ | |
404 | while (*cmd == '@' || *cmd == '-') { | |
405 | if (*cmd == '@') { | |
406 | shutUp = TRUE; | |
407 | } else { | |
408 | errOff = TRUE; | |
409 | } | |
410 | cmd++; | |
411 | } | |
412 | ||
413 | if (shutUp) { | |
414 | if (! (job->flags & JOB_SILENT) && !noSpecials && | |
415 | commandShell->hasEchoCtl) { | |
416 | DBPRINTF ("%s\n", commandShell->echoOff); | |
417 | } else { | |
418 | shutUp = FALSE; | |
419 | } | |
420 | } | |
421 | ||
422 | if (errOff) { | |
423 | if ( ! (job->flags & JOB_IGNERR) && !noSpecials) { | |
424 | if (commandShell->hasErrCtl) { | |
425 | /* | |
426 | * we don't want the error-control commands showing | |
427 | * up either, so we turn off echoing while executing | |
428 | * them. We could put another field in the shell | |
429 | * structure to tell JobDoOutput to look for this | |
430 | * string too, but why make it any more complex than | |
431 | * it already is? | |
432 | */ | |
433 | if (! (job->flags & JOB_SILENT) && !shutUp && | |
434 | commandShell->hasEchoCtl) { | |
435 | DBPRINTF ("%s\n", commandShell->echoOff); | |
436 | DBPRINTF ("%s\n", commandShell->ignErr); | |
437 | DBPRINTF ("%s\n", commandShell->echoOn); | |
438 | } else { | |
439 | DBPRINTF ("%s\n", commandShell->ignErr); | |
440 | } | |
441 | } else if (commandShell->ignErr && | |
442 | (*commandShell->ignErr != '\0')) | |
443 | { | |
444 | /* | |
445 | * The shell has no error control, so we need to be | |
446 | * weird to get it to ignore any errors from the command. | |
447 | * If echoing is turned on, we turn it off and use the | |
448 | * errCheck template to echo the command. Leave echoing | |
449 | * off so the user doesn't see the weirdness we go through | |
450 | * to ignore errors. Set cmdTemplate to use the weirdness | |
451 | * instead of the simple "%s\n" template. | |
452 | */ | |
453 | if (! (job->flags & JOB_SILENT) && !shutUp && | |
454 | commandShell->hasEchoCtl) { | |
455 | DBPRINTF ("%s\n", commandShell->echoOff); | |
456 | DBPRINTF (commandShell->errCheck, cmd); | |
457 | shutUp = TRUE; | |
458 | } | |
459 | cmdTemplate = commandShell->ignErr; | |
460 | /* | |
461 | * The error ignoration (hee hee) is already taken care | |
462 | * of by the ignErr template, so pretend error checking | |
463 | * is still on. | |
464 | */ | |
465 | errOff = FALSE; | |
466 | } else { | |
467 | errOff = FALSE; | |
468 | } | |
469 | } else { | |
470 | errOff = FALSE; | |
471 | } | |
472 | } | |
473 | ||
474 | DBPRINTF (cmdTemplate, cmd); | |
475 | ||
476 | if (errOff) { | |
477 | /* | |
478 | * If echoing is already off, there's no point in issuing the | |
479 | * echoOff command. Otherwise we issue it and pretend it was on | |
480 | * for the whole command... | |
481 | */ | |
482 | if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){ | |
483 | DBPRINTF ("%s\n", commandShell->echoOff); | |
484 | shutUp = TRUE; | |
485 | } | |
486 | DBPRINTF ("%s\n", commandShell->errCheck); | |
487 | } | |
488 | if (shutUp) { | |
489 | DBPRINTF ("%s\n", commandShell->echoOn); | |
490 | } | |
491 | return (0); | |
492 | } | |
21859cc6 | 493 | |
ab950546 KB |
494 | /*- |
495 | *----------------------------------------------------------------------- | |
496 | * JobSaveCommand -- | |
497 | * Save a command to be executed when everything else is done. | |
498 | * Callback function for JobFinish... | |
499 | * | |
500 | * Results: | |
501 | * Always returns 0 | |
502 | * | |
503 | * Side Effects: | |
504 | * The command is tacked onto the end of postCommands's commands list. | |
505 | * | |
506 | *----------------------------------------------------------------------- | |
507 | */ | |
508 | static int | |
509 | JobSaveCommand (cmd, gn) | |
510 | char *cmd; | |
511 | GNode *gn; | |
512 | { | |
513 | cmd = Var_Subst (cmd, gn, FALSE); | |
514 | (void)Lst_AtEnd (postCommands->commands, (ClientData)cmd); | |
515 | return (0); | |
516 | } | |
21859cc6 | 517 | |
ab950546 KB |
518 | /*- |
519 | *----------------------------------------------------------------------- | |
520 | * JobFinish -- | |
521 | * Do final processing for the given job including updating | |
522 | * parents and starting new jobs as available/necessary. Note | |
523 | * that we pay no attention to the JOB_IGNERR flag here. | |
524 | * This is because when we're called because of a noexecute flag | |
525 | * or something, jstat.w_status is 0 and when called from | |
526 | * Job_CatchChildren, the status is zeroed if it s/b ignored. | |
527 | * | |
528 | * Results: | |
529 | * None | |
530 | * | |
531 | * Side Effects: | |
532 | * Some nodes may be put on the toBeMade queue. | |
533 | * Final commands for the job are placed on postCommands. | |
534 | * | |
535 | * If we got an error and are aborting (aborting == ABORT_ERROR) and | |
536 | * the job list is now empty, we are done for the day. | |
537 | * If we recognized an error (errors !=0), we set the aborting flag | |
538 | * to ABORT_ERROR so no more jobs will be started. | |
539 | *----------------------------------------------------------------------- | |
540 | */ | |
541 | /*ARGSUSED*/ | |
542 | void | |
543 | JobFinish (job, status) | |
544 | Job *job; /* job to finish */ | |
545 | union wait status; /* sub-why job went away */ | |
546 | { | |
547 | Boolean done; | |
548 | ||
549 | if ((WIFEXITED(status) && | |
b6cda174 | 550 | (((status.w_retcode != 0) && !(job->flags & JOB_IGNERR)))) || |
ab950546 KB |
551 | (WIFSIGNALED(status) && (status.w_termsig != SIGCONT))) |
552 | { | |
553 | /* | |
554 | * If it exited non-zero and either we're doing things our | |
555 | * way or we're not ignoring errors, the job is finished. | |
fb622282 KB |
556 | * Similarly, if the shell died because of a signal |
557 | * the job is also finished. In these | |
ab950546 KB |
558 | * cases, finish out the job's output before printing the exit |
559 | * status... | |
560 | */ | |
561 | if (usePipes) { | |
562 | #ifdef RMT_WILL_WATCH | |
563 | Rmt_Ignore(job->inPipe); | |
564 | #else | |
565 | FD_CLR(job->inPipe, &outputs); | |
566 | #endif /* RMT_WILL_WATCH */ | |
567 | if (job->outPipe != job->inPipe) { | |
568 | (void)close (job->outPipe); | |
569 | } | |
570 | JobDoOutput (job, TRUE); | |
571 | (void)close (job->inPipe); | |
572 | } else { | |
573 | (void)close (job->outFd); | |
574 | JobDoOutput (job, TRUE); | |
575 | } | |
576 | ||
577 | if (job->cmdFILE != NULL && job->cmdFILE != stdout) { | |
578 | fclose(job->cmdFILE); | |
579 | } | |
580 | done = TRUE; | |
b6cda174 | 581 | } else if (WIFEXITED(status) && status.w_retcode != 0) { |
ab950546 KB |
582 | /* |
583 | * Deal with ignored errors in -B mode. We need to print a message | |
584 | * telling of the ignored error as well as setting status.w_status | |
585 | * to 0 so the next command gets run. To do this, we set done to be | |
586 | * TRUE if in -B mode and the job exited non-zero. Note we don't | |
587 | * want to close down any of the streams until we know we're at the | |
588 | * end. | |
589 | */ | |
590 | done = TRUE; | |
591 | } else { | |
592 | /* | |
593 | * No need to close things down or anything. | |
594 | */ | |
595 | done = FALSE; | |
596 | } | |
597 | ||
598 | if (done || | |
599 | WIFSTOPPED(status) || | |
600 | (WIFSIGNALED(status) && (status.w_termsig == SIGCONT)) || | |
601 | DEBUG(JOB)) | |
602 | { | |
603 | FILE *out; | |
604 | ||
b6cda174 | 605 | if (!usePipes && (job->flags & JOB_IGNERR)) { |
ab950546 KB |
606 | /* |
607 | * If output is going to a file and this job is ignoring | |
608 | * errors, arrange to have the exit status sent to the | |
609 | * output file as well. | |
610 | */ | |
611 | out = fdopen (job->outFd, "w"); | |
612 | } else { | |
613 | out = stdout; | |
614 | } | |
615 | ||
616 | if (WIFEXITED(status)) { | |
617 | if (status.w_retcode != 0) { | |
618 | if (usePipes && job->node != lastNode) { | |
619 | fprintf (out, targFmt, job->node->name); | |
620 | lastNode = job->node; | |
621 | } | |
622 | fprintf (out, "*** Error code %d%s\n", status.w_retcode, | |
623 | (job->flags & JOB_IGNERR) ? " (ignored)" : ""); | |
624 | ||
625 | if (job->flags & JOB_IGNERR) { | |
626 | status.w_status = 0; | |
627 | } | |
628 | } else if (DEBUG(JOB)) { | |
629 | if (usePipes && job->node != lastNode) { | |
630 | fprintf (out, targFmt, job->node->name); | |
631 | lastNode = job->node; | |
632 | } | |
633 | fprintf (out, "*** Completed successfully\n"); | |
634 | } | |
635 | } else if (WIFSTOPPED(status)) { | |
636 | if (usePipes && job->node != lastNode) { | |
637 | fprintf (out, targFmt, job->node->name); | |
638 | lastNode = job->node; | |
639 | } | |
640 | if (! (job->flags & JOB_REMIGRATE)) { | |
641 | fprintf (out, "*** Stopped -- signal %d\n", status.w_stopsig); | |
642 | } | |
643 | job->flags |= JOB_RESUME; | |
644 | (void)Lst_AtEnd(stoppedJobs, (ClientData)job); | |
645 | fflush(out); | |
646 | return; | |
647 | } else if (status.w_termsig == SIGCONT) { | |
648 | /* | |
649 | * If the beastie has continued, shift the Job from the stopped | |
650 | * list to the running one (or re-stop it if concurrency is | |
651 | * exceeded) and go and get another child. | |
652 | */ | |
653 | if (job->flags & (JOB_RESUME|JOB_REMIGRATE|JOB_RESTART)) { | |
654 | if (usePipes && job->node != lastNode) { | |
655 | fprintf (out, targFmt, job->node->name); | |
656 | lastNode = job->node; | |
657 | } | |
658 | fprintf (out, "*** Continued\n"); | |
659 | } | |
660 | if (! (job->flags & JOB_CONTINUING)) { | |
661 | JobRestart(job); | |
662 | } else { | |
663 | Lst_AtEnd(jobs, (ClientData)job); | |
664 | nJobs += 1; | |
665 | if (! (job->flags & JOB_REMOTE)) { | |
666 | nLocal += 1; | |
667 | } | |
668 | if (nJobs == maxJobs) { | |
669 | jobFull = TRUE; | |
670 | if (DEBUG(JOB)) { | |
671 | printf("Job queue is full.\n"); | |
672 | } | |
673 | } | |
674 | } | |
675 | fflush(out); | |
676 | return; | |
677 | } else { | |
678 | if (usePipes && job->node != lastNode) { | |
679 | fprintf (out, targFmt, job->node->name); | |
680 | lastNode = job->node; | |
681 | } | |
682 | fprintf (out, "*** Signal %d\n", status.w_termsig); | |
683 | } | |
684 | ||
685 | fflush (out); | |
686 | } | |
687 | ||
688 | /* | |
689 | * Now handle the -B-mode stuff. If the beast still isn't finished, | |
690 | * try and restart the job on the next command. If JobStart says it's | |
691 | * ok, it's ok. If there's an error, this puppy is done. | |
692 | */ | |
b6cda174 | 693 | if ((status.w_status == 0) && |
ab950546 KB |
694 | !Lst_IsAtEnd (job->node->commands)) |
695 | { | |
696 | switch (JobStart (job->node, | |
697 | job->flags & JOB_IGNDOTS, | |
698 | job)) | |
699 | { | |
700 | case JOB_RUNNING: | |
701 | done = FALSE; | |
702 | break; | |
703 | case JOB_ERROR: | |
704 | done = TRUE; | |
705 | status.w_retcode = 1; | |
706 | break; | |
707 | case JOB_FINISHED: | |
708 | /* | |
709 | * If we got back a JOB_FINISHED code, JobStart has already | |
710 | * called Make_Update and freed the job descriptor. We set | |
711 | * done to false here to avoid fake cycles and double frees. | |
712 | * JobStart needs to do the update so we can proceed up the | |
713 | * graph when given the -n flag.. | |
714 | */ | |
715 | done = FALSE; | |
716 | break; | |
717 | } | |
718 | } else { | |
719 | done = TRUE; | |
720 | } | |
721 | ||
722 | ||
723 | if (done && | |
724 | (aborting != ABORT_ERROR) && | |
725 | (aborting != ABORT_INTERRUPT) && | |
726 | (status.w_status == 0)) | |
727 | { | |
728 | /* | |
729 | * As long as we aren't aborting and the job didn't return a non-zero | |
730 | * status that we shouldn't ignore, we call Make_Update to update | |
731 | * the parents. In addition, any saved commands for the node are placed | |
732 | * on the .END target. | |
733 | */ | |
734 | if (job->tailCmds != NILLNODE) { | |
735 | Lst_ForEachFrom (job->node->commands, job->tailCmds, | |
736 | JobSaveCommand, | |
737 | (ClientData)job->node); | |
738 | } | |
739 | job->node->made = MADE; | |
740 | Make_Update (job->node); | |
741 | free((Address)job); | |
742 | } else if (status.w_status) { | |
743 | errors += 1; | |
744 | free((Address)job); | |
745 | } | |
746 | ||
747 | while (!errors && !jobFull && !Lst_IsEmpty(stoppedJobs)) { | |
748 | JobRestart((Job *)Lst_DeQueue(stoppedJobs)); | |
749 | } | |
750 | ||
751 | /* | |
752 | * Set aborting if any error. | |
753 | */ | |
754 | if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) { | |
755 | /* | |
756 | * If we found any errors in this batch of children and the -k flag | |
757 | * wasn't given, we set the aborting flag so no more jobs get | |
758 | * started. | |
759 | */ | |
760 | aborting = ABORT_ERROR; | |
761 | } | |
762 | ||
763 | if ((aborting == ABORT_ERROR) && Job_Empty()) { | |
764 | /* | |
765 | * If we are aborting and the job table is now empty, we finish. | |
766 | */ | |
767 | (void) unlink (tfile); | |
768 | Finish (errors); | |
769 | } | |
770 | } | |
21859cc6 | 771 | |
ab950546 KB |
772 | /*- |
773 | *----------------------------------------------------------------------- | |
774 | * Job_Touch -- | |
775 | * Touch the given target. Called by JobStart when the -t flag was | |
776 | * given | |
777 | * | |
778 | * Results: | |
779 | * None | |
780 | * | |
781 | * Side Effects: | |
782 | * The data modification of the file is changed. In addition, if the | |
783 | * file did not exist, it is created. | |
784 | *----------------------------------------------------------------------- | |
785 | */ | |
786 | void | |
787 | Job_Touch (gn, silent) | |
788 | GNode *gn; /* the node of the file to touch */ | |
789 | Boolean silent; /* TRUE if should not print messages */ | |
790 | { | |
791 | int streamID; /* ID of stream opened to do the touch */ | |
792 | struct timeval times[2]; /* Times for utimes() call */ | |
793 | struct stat attr; /* Attributes of the file */ | |
794 | ||
ac8c8bba | 795 | if (gn->type & (OP_JOIN|OP_USE|OP_EXEC|OP_OPTIONAL)) { |
ab950546 | 796 | /* |
ac8c8bba | 797 | * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets |
ab950546 KB |
798 | * and, as such, shouldn't really be created. |
799 | */ | |
800 | return; | |
801 | } | |
802 | ||
803 | if (!silent) { | |
804 | printf ("touch %s\n", gn->name); | |
805 | } | |
806 | ||
807 | if (noExecute) { | |
808 | return; | |
809 | } | |
810 | ||
811 | if (gn->type & OP_ARCHV) { | |
812 | Arch_Touch (gn); | |
813 | } else if (gn->type & OP_LIB) { | |
814 | Arch_TouchLib (gn); | |
815 | } else { | |
816 | char *file = gn->path ? gn->path : gn->name; | |
817 | ||
818 | times[0].tv_sec = times[1].tv_sec = now; | |
819 | times[0].tv_usec = times[1].tv_usec = 0; | |
820 | if (utimes(file, times) < 0){ | |
821 | streamID = open (file, O_RDWR | O_CREAT, 0666); | |
822 | ||
823 | if (streamID >= 0) { | |
824 | char c; | |
825 | ||
826 | /* | |
827 | * Read and write a byte to the file to change the | |
828 | * modification time, then close the file. | |
829 | */ | |
830 | if (read(streamID, &c, 1) == 1) { | |
831 | lseek(streamID, 0L, L_SET); | |
832 | write(streamID, &c, 1); | |
833 | } | |
834 | ||
835 | (void)close (streamID); | |
7af1139d KB |
836 | } else |
837 | printf("*** couldn't touch %s: %s", file, strerror(errno)); | |
ab950546 KB |
838 | } |
839 | } | |
840 | } | |
21859cc6 | 841 | |
ab950546 KB |
842 | /*- |
843 | *----------------------------------------------------------------------- | |
844 | * Job_CheckCommands -- | |
845 | * Make sure the given node has all the commands it needs. | |
846 | * | |
847 | * Results: | |
848 | * TRUE if the commands list is/was ok. | |
849 | * | |
850 | * Side Effects: | |
851 | * The node will have commands from the .DEFAULT rule added to it | |
852 | * if it needs them. | |
853 | *----------------------------------------------------------------------- | |
854 | */ | |
855 | Boolean | |
856 | Job_CheckCommands (gn, abortProc) | |
857 | GNode *gn; /* The target whose commands need | |
858 | * verifying */ | |
859 | void (*abortProc)(); /* Function to abort with message */ | |
860 | { | |
861 | if (OP_NOP(gn->type) && Lst_IsEmpty (gn->commands) && | |
862 | (gn->type & OP_LIB) == 0) { | |
863 | /* | |
864 | * No commands. Look for .DEFAULT rule from which we might infer | |
865 | * commands | |
866 | */ | |
867 | if ((DEFAULT != NILGNODE) && !Lst_IsEmpty(DEFAULT->commands)) { | |
868 | /* | |
869 | * Make only looks for a .DEFAULT if the node was never the | |
870 | * target of an operator, so that's what we do too. If | |
871 | * a .DEFAULT was given, we substitute its commands for gn's | |
872 | * commands and set the IMPSRC variable to be the target's name | |
873 | * The DEFAULT node acts like a transformation rule, in that | |
874 | * gn also inherits any attributes or sources attached to | |
875 | * .DEFAULT itself. | |
876 | */ | |
877 | Make_HandleUse(DEFAULT, gn); | |
878 | Var_Set (IMPSRC, Var_Value (TARGET, gn), gn); | |
879 | } else if (Dir_MTime (gn) == 0) { | |
880 | /* | |
881 | * The node wasn't the target of an operator we have no .DEFAULT | |
882 | * rule to go on and the target doesn't already exist. There's | |
883 | * nothing more we can do for this branch. If the -k flag wasn't | |
884 | * given, we stop in our tracks, otherwise we just don't update | |
885 | * this node's parents so they never get examined. | |
886 | */ | |
ac8c8bba | 887 | if (gn->type & OP_OPTIONAL) { |
ab950546 KB |
888 | printf ("Can't figure out how to make %s (ignored)\n", |
889 | gn->name); | |
890 | } else if (keepgoing) { | |
891 | printf ("Can't figure out how to make %s (continuing)\n", | |
892 | gn->name); | |
893 | return (FALSE); | |
894 | } else { | |
895 | (*abortProc) ("Can't figure out how to make %s. Stop", | |
896 | gn->name); | |
897 | return(FALSE); | |
898 | } | |
899 | } | |
900 | } | |
901 | return (TRUE); | |
902 | } | |
903 | #ifdef RMT_WILL_WATCH | |
904 | /*- | |
905 | *----------------------------------------------------------------------- | |
906 | * JobLocalInput -- | |
907 | * Handle a pipe becoming readable. Callback function for Rmt_Watch | |
908 | * | |
909 | * Results: | |
910 | * None | |
911 | * | |
912 | * Side Effects: | |
913 | * JobDoOutput is called. | |
914 | * | |
915 | *----------------------------------------------------------------------- | |
916 | */ | |
917 | /*ARGSUSED*/ | |
918 | static void | |
919 | JobLocalInput(stream, job) | |
920 | int stream; /* Stream that's ready (ignored) */ | |
921 | Job *job; /* Job to which the stream belongs */ | |
922 | { | |
923 | JobDoOutput(job, FALSE); | |
924 | } | |
925 | #endif /* RMT_WILL_WATCH */ | |
21859cc6 | 926 | |
ab950546 KB |
927 | /*- |
928 | *----------------------------------------------------------------------- | |
929 | * JobExec -- | |
930 | * Execute the shell for the given job. Called from JobStart and | |
931 | * JobRestart. | |
932 | * | |
933 | * Results: | |
934 | * None. | |
935 | * | |
936 | * Side Effects: | |
937 | * A shell is executed, outputs is altered and the Job structure added | |
938 | * to the job table. | |
939 | * | |
940 | *----------------------------------------------------------------------- | |
941 | */ | |
942 | static void | |
943 | JobExec(job, argv) | |
944 | Job *job; /* Job to execute */ | |
945 | char **argv; | |
946 | { | |
947 | int cpid; /* ID of new child */ | |
948 | ||
949 | if (DEBUG(JOB)) { | |
950 | int i; | |
951 | ||
952 | printf("Running %s %sly\n", job->node->name, | |
953 | job->flags&JOB_REMOTE?"remote":"local"); | |
954 | printf("\tCommand: "); | |
955 | for (i = 0; argv[i] != (char *)NULL; i++) { | |
956 | printf("%s ", argv[i]); | |
957 | } | |
958 | printf("\n"); | |
959 | } | |
960 | ||
961 | /* | |
962 | * Some jobs produce no output and it's disconcerting to have | |
963 | * no feedback of their running (since they produce no output, the | |
964 | * banner with their name in it never appears). This is an attempt to | |
965 | * provide that feedback, even if nothing follows it. | |
966 | */ | |
967 | if ((lastNode != job->node) && (job->flags & JOB_FIRST) && | |
968 | !(job->flags & JOB_SILENT)) | |
969 | { | |
970 | printf(targFmt, job->node->name); | |
971 | lastNode = job->node; | |
972 | } | |
973 | ||
974 | #ifdef RMT_NO_EXEC | |
975 | if (job->flags & JOB_REMOTE) { | |
976 | goto jobExecFinish; | |
977 | } | |
978 | #endif /* RMT_NO_EXEC */ | |
979 | ||
980 | if ((cpid = vfork()) == -1) { | |
981 | Punt ("Cannot fork"); | |
982 | } else if (cpid == 0) { | |
983 | ||
984 | /* | |
985 | * Must duplicate the input stream down to the child's input and | |
986 | * reset it to the beginning (again). Since the stream was marked | |
987 | * close-on-exec, we must clear that bit in the new input. | |
988 | */ | |
989 | (void) dup2(fileno(job->cmdFILE), 0); | |
990 | fcntl(0, F_SETFD, 0); | |
991 | lseek(0, 0, L_SET); | |
992 | ||
993 | if (usePipes) { | |
994 | /* | |
995 | * Set up the child's output to be routed through the pipe | |
996 | * we've created for it. | |
997 | */ | |
998 | (void) dup2 (job->outPipe, 1); | |
999 | } else { | |
1000 | /* | |
1001 | * We're capturing output in a file, so we duplicate the | |
1002 | * descriptor to the temporary file into the standard | |
1003 | * output. | |
1004 | */ | |
1005 | (void) dup2 (job->outFd, 1); | |
1006 | } | |
1007 | /* | |
1008 | * The output channels are marked close on exec. This bit was | |
1009 | * duplicated by the dup2 (on some systems), so we have to clear | |
1010 | * it before routing the shell's error output to the same place as | |
1011 | * its standard output. | |
1012 | */ | |
1013 | fcntl(1, F_SETFD, 0); | |
1014 | (void) dup2 (1, 2); | |
1015 | ||
1016 | #ifdef USE_PGRP | |
1017 | /* | |
1018 | * We want to switch the child into a different process family so | |
1019 | * we can kill it and all its descendants in one fell swoop, | |
1020 | * by killing its process family, but not commit suicide. | |
1021 | */ | |
1022 | ||
ab950546 | 1023 | (void) setpgrp(0, getpid()); |
ab950546 KB |
1024 | #endif USE_PGRP |
1025 | ||
21859cc6 | 1026 | (void) execv (shellPath, argv); |
ab950546 KB |
1027 | (void) write (2, "Could not execute shell\n", |
1028 | sizeof ("Could not execute shell")); | |
1029 | _exit (1); | |
1030 | } else { | |
1031 | job->pid = cpid; | |
1032 | ||
1033 | if (usePipes && (job->flags & JOB_FIRST) ) { | |
1034 | /* | |
1035 | * The first time a job is run for a node, we set the current | |
1036 | * position in the buffer to the beginning and mark another | |
1037 | * stream to watch in the outputs mask | |
1038 | */ | |
1039 | job->curPos = 0; | |
1040 | ||
1041 | #ifdef RMT_WILL_WATCH | |
1042 | Rmt_Watch(job->inPipe, JobLocalInput, job); | |
1043 | #else | |
1044 | FD_SET(job->inPipe, &outputs); | |
1045 | #endif /* RMT_WILL_WATCH */ | |
1046 | } | |
1047 | ||
1048 | if (job->flags & JOB_REMOTE) { | |
21859cc6 | 1049 | job->rmtID = (char *)0; |
ab950546 KB |
1050 | } else { |
1051 | nLocal += 1; | |
1052 | /* | |
1053 | * XXX: Used to not happen if CUSTOMS. Why? | |
1054 | */ | |
1055 | if (job->cmdFILE != stdout) { | |
1056 | fclose(job->cmdFILE); | |
1057 | job->cmdFILE = NULL; | |
1058 | } | |
1059 | } | |
1060 | } | |
1061 | ||
1062 | jobExecFinish: | |
1063 | /* | |
1064 | * Now the job is actually running, add it to the table. | |
1065 | */ | |
1066 | nJobs += 1; | |
1067 | (void)Lst_AtEnd (jobs, (ClientData)job); | |
1068 | if (nJobs == maxJobs) { | |
1069 | jobFull = TRUE; | |
1070 | } | |
1071 | } | |
21859cc6 | 1072 | |
ab950546 KB |
1073 | /*- |
1074 | *----------------------------------------------------------------------- | |
1075 | * JobMakeArgv -- | |
1076 | * Create the argv needed to execute the shell for a given job. | |
1077 | * | |
1078 | * | |
1079 | * Results: | |
1080 | * | |
1081 | * Side Effects: | |
1082 | * | |
1083 | *----------------------------------------------------------------------- | |
1084 | */ | |
1085 | static void | |
1086 | JobMakeArgv(job, argv) | |
1087 | Job *job; | |
1088 | char **argv; | |
1089 | { | |
1090 | int argc; | |
1091 | static char args[10]; /* For merged arguments */ | |
1092 | ||
1093 | argv[0] = shellName; | |
1094 | argc = 1; | |
1095 | ||
1096 | if ((commandShell->exit && (*commandShell->exit != '-')) || | |
1097 | (commandShell->echo && (*commandShell->echo != '-'))) | |
1098 | { | |
1099 | /* | |
1100 | * At least one of the flags doesn't have a minus before it, so | |
1101 | * merge them together. Have to do this because the *(&(@*#*&#$# | |
1102 | * Bourne shell thinks its second argument is a file to source. | |
1103 | * Grrrr. Note the ten-character limitation on the combined arguments. | |
1104 | */ | |
1105 | (void)sprintf(args, "-%s%s", | |
1106 | ((job->flags & JOB_IGNERR) ? "" : | |
1107 | (commandShell->exit ? commandShell->exit : "")), | |
1108 | ((job->flags & JOB_SILENT) ? "" : | |
1109 | (commandShell->echo ? commandShell->echo : ""))); | |
1110 | ||
1111 | if (args[1]) { | |
1112 | argv[argc] = args; | |
1113 | argc++; | |
1114 | } | |
1115 | } else { | |
1116 | if (!(job->flags & JOB_IGNERR) && commandShell->exit) { | |
1117 | argv[argc] = commandShell->exit; | |
1118 | argc++; | |
1119 | } | |
1120 | if (!(job->flags & JOB_SILENT) && commandShell->echo) { | |
1121 | argv[argc] = commandShell->echo; | |
1122 | argc++; | |
1123 | } | |
1124 | } | |
1125 | argv[argc] = (char *)NULL; | |
1126 | } | |
21859cc6 | 1127 | |
ab950546 KB |
1128 | /*- |
1129 | *----------------------------------------------------------------------- | |
1130 | * JobRestart -- | |
21859cc6 | 1131 | * Restart a job that stopped for some reason. |
ab950546 KB |
1132 | * |
1133 | * Results: | |
1134 | * None. | |
1135 | * | |
1136 | * Side Effects: | |
1137 | * jobFull will be set if the job couldn't be run. | |
1138 | * | |
1139 | *----------------------------------------------------------------------- | |
1140 | */ | |
1141 | static void | |
1142 | JobRestart(job) | |
1143 | Job *job; /* Job to restart */ | |
1144 | { | |
1145 | if (job->flags & JOB_REMIGRATE) { | |
1146 | if (DEBUG(JOB)) { | |
1147 | printf("Remigrating %x\n", job->pid); | |
1148 | } | |
21859cc6 | 1149 | if (nLocal != maxLocal) { |
ab950546 KB |
1150 | /* |
1151 | * Job cannot be remigrated, but there's room on the local | |
1152 | * machine, so resume the job and note that another | |
1153 | * local job has started. | |
1154 | */ | |
1155 | if (DEBUG(JOB)) { | |
1156 | printf("resuming on local machine\n"); | |
1157 | } | |
1158 | KILL(job->pid, SIGCONT); | |
1159 | nLocal +=1; | |
1160 | job->flags &= ~(JOB_REMIGRATE|JOB_RESUME); | |
21859cc6 | 1161 | } else { |
ab950546 KB |
1162 | /* |
1163 | * Job cannot be restarted. Mark the table as full and | |
1164 | * place the job back on the list of stopped jobs. | |
1165 | */ | |
1166 | if (DEBUG(JOB)) { | |
1167 | printf("holding\n"); | |
1168 | } | |
1169 | (void)Lst_AtFront(stoppedJobs, (ClientData)job); | |
1170 | jobFull = TRUE; | |
1171 | if (DEBUG(JOB)) { | |
1172 | printf("Job queue is full.\n"); | |
1173 | } | |
1174 | return; | |
ab950546 KB |
1175 | } |
1176 | ||
1177 | (void)Lst_AtEnd(jobs, (ClientData)job); | |
1178 | nJobs += 1; | |
1179 | if (nJobs == maxJobs) { | |
1180 | jobFull = TRUE; | |
1181 | if (DEBUG(JOB)) { | |
1182 | printf("Job queue is full.\n"); | |
1183 | } | |
1184 | } | |
1185 | } else if (job->flags & JOB_RESTART) { | |
1186 | /* | |
1187 | * Set up the control arguments to the shell. This is based on the | |
1188 | * flags set earlier for this job. If the JOB_IGNERR flag is clear, | |
1189 | * the 'exit' flag of the commandShell is used to cause it to exit | |
1190 | * upon receiving an error. If the JOB_SILENT flag is clear, the | |
1191 | * 'echo' flag of the commandShell is used to get it to start echoing | |
1192 | * as soon as it starts processing commands. | |
1193 | */ | |
1194 | char *argv[4]; | |
1195 | ||
1196 | JobMakeArgv(job, argv); | |
1197 | ||
1198 | if (DEBUG(JOB)) { | |
1199 | printf("Restarting %s...", job->node->name); | |
1200 | } | |
21859cc6 | 1201 | if (((nLocal >= maxLocal) && ! (job->flags & JOB_SPECIAL))) { |
ab950546 KB |
1202 | /* |
1203 | * Can't be exported and not allowed to run locally -- put it | |
1204 | * back on the hold queue and mark the table full | |
1205 | */ | |
1206 | if (DEBUG(JOB)) { | |
1207 | printf("holding\n"); | |
1208 | } | |
1209 | (void)Lst_AtFront(stoppedJobs, (ClientData)job); | |
1210 | jobFull = TRUE; | |
1211 | if (DEBUG(JOB)) { | |
1212 | printf("Job queue is full.\n"); | |
1213 | } | |
1214 | return; | |
21859cc6 | 1215 | } else { |
ab950546 KB |
1216 | /* |
1217 | * Job may be run locally. | |
1218 | */ | |
1219 | if (DEBUG(JOB)) { | |
1220 | printf("running locally\n"); | |
1221 | } | |
1222 | job->flags &= ~JOB_REMOTE; | |
ab950546 KB |
1223 | } |
1224 | JobExec(job, argv); | |
1225 | } else { | |
1226 | /* | |
1227 | * The job has stopped and needs to be restarted. Why it stopped, | |
1228 | * we don't know... | |
1229 | */ | |
1230 | if (DEBUG(JOB)) { | |
1231 | printf("Resuming %s...", job->node->name); | |
1232 | } | |
1233 | if (((job->flags & JOB_REMOTE) || | |
1234 | (nLocal < maxLocal) || | |
21859cc6 | 1235 | (((job->flags & JOB_SPECIAL)) && |
ab950546 KB |
1236 | (maxLocal == 0))) && |
1237 | (nJobs != maxJobs)) | |
1238 | { | |
1239 | /* | |
1240 | * If the job is remote, it's ok to resume it as long as the | |
1241 | * maximum concurrency won't be exceeded. If it's local and | |
1242 | * we haven't reached the local concurrency limit already (or the | |
1243 | * job must be run locally and maxLocal is 0), it's also ok to | |
1244 | * resume it. | |
1245 | */ | |
1246 | Boolean error; | |
1247 | extern int errno; | |
ab950546 KB |
1248 | union wait status; |
1249 | ||
1250 | #ifdef RMT_WANTS_SIGNALS | |
1251 | if (job->flags & JOB_REMOTE) { | |
1252 | error = !Rmt_Signal(job, SIGCONT); | |
1253 | } else | |
1254 | #endif /* RMT_WANTS_SIGNALS */ | |
1255 | error = (KILL(job->pid, SIGCONT) != 0); | |
1256 | ||
1257 | if (!error) { | |
1258 | /* | |
1259 | * Make sure the user knows we've continued the beast and | |
1260 | * actually put the thing in the job table. | |
1261 | */ | |
1262 | job->flags |= JOB_CONTINUING; | |
1263 | status.w_termsig = SIGCONT; | |
1264 | JobFinish(job, status); | |
1265 | ||
1266 | job->flags &= ~(JOB_RESUME|JOB_CONTINUING); | |
1267 | if (DEBUG(JOB)) { | |
1268 | printf("done\n"); | |
1269 | } | |
1270 | } else { | |
7af1139d KB |
1271 | Error("couldn't resume %s: %s", |
1272 | job->node->name, strerror(errno)); | |
ab950546 KB |
1273 | status.w_status = 0; |
1274 | status.w_retcode = 1; | |
1275 | JobFinish(job, status); | |
1276 | } | |
1277 | } else { | |
1278 | /* | |
1279 | * Job cannot be restarted. Mark the table as full and | |
1280 | * place the job back on the list of stopped jobs. | |
1281 | */ | |
1282 | if (DEBUG(JOB)) { | |
1283 | printf("table full\n"); | |
1284 | } | |
1285 | (void)Lst_AtFront(stoppedJobs, (ClientData)job); | |
1286 | jobFull = TRUE; | |
1287 | if (DEBUG(JOB)) { | |
1288 | printf("Job queue is full.\n"); | |
1289 | } | |
1290 | } | |
1291 | } | |
1292 | } | |
21859cc6 | 1293 | |
ab950546 KB |
1294 | /*- |
1295 | *----------------------------------------------------------------------- | |
1296 | * JobStart -- | |
1297 | * Start a target-creation process going for the target described | |
1298 | * by the graph node gn. | |
1299 | * | |
1300 | * Results: | |
1301 | * JOB_ERROR if there was an error in the commands, JOB_FINISHED | |
1302 | * if there isn't actually anything left to do for the job and | |
1303 | * JOB_RUNNING if the job has been started. | |
1304 | * | |
1305 | * Side Effects: | |
1306 | * A new Job node is created and added to the list of running | |
1307 | * jobs. PMake is forked and a child shell created. | |
1308 | *----------------------------------------------------------------------- | |
1309 | */ | |
1310 | static int | |
1311 | JobStart (gn, flags, previous) | |
1312 | GNode *gn; /* target to create */ | |
1313 | short flags; /* flags for the job to override normal ones. | |
1314 | * e.g. JOB_SPECIAL or JOB_IGNDOTS */ | |
1315 | Job *previous; /* The previous Job structure for this node, | |
1316 | * if any. */ | |
1317 | { | |
1318 | register Job *job; /* new job descriptor */ | |
1319 | char *argv[4]; /* Argument vector to shell */ | |
1320 | char args[5]; /* arguments to shell */ | |
1321 | static int jobno = 0; /* job number of catching output in a file */ | |
1322 | Boolean cmdsOK; /* true if the nodes commands were all right */ | |
1323 | Boolean local; /* Set true if the job was run locally */ | |
1324 | Boolean noExec; /* Set true if we decide not to run the job */ | |
1325 | ||
1326 | if (previous != (Job *)NULL) { | |
1327 | previous->flags &= ~ (JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE); | |
1328 | job = previous; | |
1329 | } else { | |
72dbcd0c | 1330 | job = (Job *) emalloc (sizeof (Job)); |
ab950546 KB |
1331 | if (job == (Job *)NULL) { |
1332 | Punt("JobStart out of memory"); | |
1333 | } | |
1334 | flags |= JOB_FIRST; | |
1335 | } | |
1336 | ||
1337 | job->node = gn; | |
1338 | job->tailCmds = NILLNODE; | |
1339 | ||
1340 | /* | |
1341 | * Set the initial value of the flags for this job based on the global | |
1342 | * ones and the node's attributes... Any flags supplied by the caller | |
1343 | * are also added to the field. | |
1344 | */ | |
1345 | job->flags = 0; | |
1346 | if (Targ_Ignore (gn)) { | |
1347 | job->flags |= JOB_IGNERR; | |
1348 | } | |
1349 | if (Targ_Silent (gn)) { | |
1350 | job->flags |= JOB_SILENT; | |
1351 | } | |
1352 | job->flags |= flags; | |
1353 | ||
1354 | /* | |
1355 | * Check the commands now so any attributes from .DEFAULT have a chance | |
1356 | * to migrate to the node | |
1357 | */ | |
b6cda174 | 1358 | if (job->flags & JOB_FIRST) { |
ab950546 KB |
1359 | cmdsOK = Job_CheckCommands(gn, Error); |
1360 | } else { | |
1361 | cmdsOK = TRUE; | |
1362 | } | |
1363 | ||
1364 | /* | |
1365 | * If the -n flag wasn't given, we open up OUR (not the child's) | |
1366 | * temporary file to stuff commands in it. The thing is rd/wr so we don't | |
1367 | * need to reopen it to feed it to the shell. If the -n flag *was* given, | |
1368 | * we just set the file to be stdout. Cute, huh? | |
1369 | */ | |
1370 | if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) { | |
1371 | /* | |
1372 | * We're serious here, but if the commands were bogus, we're | |
1373 | * also dead... | |
1374 | */ | |
1375 | if (!cmdsOK) { | |
1376 | DieHorribly(); | |
1377 | } | |
1378 | ||
1379 | job->cmdFILE = fopen (tfile, "w+"); | |
1380 | if (job->cmdFILE == (FILE *) NULL) { | |
1381 | Punt ("Could not open %s", tfile); | |
1382 | } | |
1383 | fcntl(fileno(job->cmdFILE), F_SETFD, 1); | |
1384 | /* | |
1385 | * Send the commands to the command file, flush all its buffers then | |
1386 | * rewind and remove the thing. | |
1387 | */ | |
1388 | noExec = FALSE; | |
1389 | ||
b6cda174 KB |
1390 | /* |
1391 | * used to be backwards; replace when start doing multiple commands | |
1392 | * per shell. | |
1393 | */ | |
1394 | if (1) { | |
ab950546 KB |
1395 | /* |
1396 | * Be compatible: If this is the first time for this node, | |
1397 | * verify its commands are ok and open the commands list for | |
1398 | * sequential access by later invocations of JobStart. | |
1399 | * Once that is done, we take the next command off the list | |
1400 | * and print it to the command file. If the command was an | |
1401 | * ellipsis, note that there's nothing more to execute. | |
1402 | */ | |
1403 | if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){ | |
1404 | cmdsOK = FALSE; | |
1405 | } else { | |
1406 | LstNode ln = Lst_Next (gn->commands); | |
1407 | ||
1408 | if ((ln == NILLNODE) || | |
1409 | JobPrintCommand ((char *)Lst_Datum (ln), job)) | |
1410 | { | |
1411 | noExec = TRUE; | |
1412 | Lst_Close (gn->commands); | |
1413 | } | |
1414 | if (noExec && !(job->flags & JOB_FIRST)) { | |
1415 | /* | |
1416 | * If we're not going to execute anything, the job | |
1417 | * is done and we need to close down the various | |
1418 | * file descriptors we've opened for output, then | |
1419 | * call JobDoOutput to catch the final characters or | |
1420 | * send the file to the screen... Note that the i/o streams | |
1421 | * are only open if this isn't the first job. | |
1422 | * Note also that this could not be done in | |
1423 | * Job_CatchChildren b/c it wasn't clear if there were | |
1424 | * more commands to execute or not... | |
1425 | */ | |
1426 | if (usePipes) { | |
1427 | #ifdef RMT_WILL_WATCH | |
1428 | Rmt_Ignore(job->inPipe); | |
1429 | #else | |
1430 | FD_CLR(job->inPipe, &outputs); | |
1431 | #endif | |
1432 | if (job->outPipe != job->inPipe) { | |
1433 | (void)close (job->outPipe); | |
1434 | } | |
1435 | JobDoOutput (job, TRUE); | |
1436 | (void)close (job->inPipe); | |
1437 | } else { | |
1438 | (void)close (job->outFd); | |
1439 | JobDoOutput (job, TRUE); | |
1440 | } | |
1441 | } | |
1442 | } | |
1443 | } else { | |
1444 | /* | |
1445 | * We can do all the commands at once. hooray for sanity | |
1446 | */ | |
1447 | numCommands = 0; | |
1448 | Lst_ForEach (gn->commands, JobPrintCommand, (ClientData)job); | |
1449 | ||
1450 | /* | |
1451 | * If we didn't print out any commands to the shell script, | |
1452 | * there's not much point in executing the shell, is there? | |
1453 | */ | |
1454 | if (numCommands == 0) { | |
1455 | noExec = TRUE; | |
1456 | } | |
1457 | } | |
1458 | } else if (noExecute) { | |
1459 | /* | |
1460 | * Not executing anything -- just print all the commands to stdout | |
1461 | * in one fell swoop. This will still set up job->tailCmds correctly. | |
1462 | */ | |
1463 | if (lastNode != gn) { | |
1464 | printf (targFmt, gn->name); | |
1465 | lastNode = gn; | |
1466 | } | |
1467 | job->cmdFILE = stdout; | |
1468 | /* | |
1469 | * Only print the commands if they're ok, but don't die if they're | |
1470 | * not -- just let the user know they're bad and keep going. It | |
1471 | * doesn't do any harm in this case and may do some good. | |
1472 | */ | |
1473 | if (cmdsOK) { | |
1474 | Lst_ForEach(gn->commands, JobPrintCommand, (ClientData)job); | |
1475 | } | |
1476 | /* | |
1477 | * Don't execute the shell, thank you. | |
1478 | */ | |
1479 | noExec = TRUE; | |
1480 | } else { | |
1481 | /* | |
1482 | * Just touch the target and note that no shell should be executed. | |
1483 | * Set cmdFILE to stdout to make life easier. Check the commands, too, | |
1484 | * but don't die if they're no good -- it does no harm to keep working | |
1485 | * up the graph. | |
1486 | */ | |
1487 | job->cmdFILE = stdout; | |
1488 | Job_Touch (gn, job->flags&JOB_SILENT); | |
1489 | noExec = TRUE; | |
1490 | } | |
1491 | ||
1492 | /* | |
1493 | * If we're not supposed to execute a shell, don't. | |
1494 | */ | |
1495 | if (noExec) { | |
1496 | /* | |
1497 | * Unlink and close the command file if we opened one | |
1498 | */ | |
1499 | if (job->cmdFILE != stdout) { | |
1500 | (void) unlink (tfile); | |
1501 | fclose(job->cmdFILE); | |
1502 | } else { | |
1503 | fflush (stdout); | |
1504 | } | |
1505 | ||
1506 | /* | |
1507 | * We only want to work our way up the graph if we aren't here because | |
1508 | * the commands for the job were no good. | |
1509 | */ | |
1510 | if (cmdsOK) { | |
1511 | if (aborting == 0) { | |
1512 | if (job->tailCmds != NILLNODE) { | |
1513 | Lst_ForEachFrom(job->node->commands, job->tailCmds, | |
1514 | JobSaveCommand, | |
1515 | (ClientData)job->node); | |
1516 | } | |
1517 | Make_Update(job->node); | |
1518 | } | |
1519 | free((Address)job); | |
1520 | return(JOB_FINISHED); | |
1521 | } else { | |
1522 | free((Address)job); | |
1523 | return(JOB_ERROR); | |
1524 | } | |
1525 | } else { | |
1526 | fflush (job->cmdFILE); | |
1527 | (void) unlink (tfile); | |
1528 | } | |
1529 | ||
1530 | /* | |
1531 | * Set up the control arguments to the shell. This is based on the flags | |
1532 | * set earlier for this job. | |
1533 | */ | |
1534 | JobMakeArgv(job, argv); | |
1535 | ||
1536 | /* | |
1537 | * If we're using pipes to catch output, create the pipe by which we'll | |
1538 | * get the shell's output. If we're using files, print out that we're | |
1539 | * starting a job and then set up its temporary-file name. This is just | |
1540 | * tfile with two extra digits tacked on -- jobno. | |
1541 | */ | |
b6cda174 | 1542 | if (job->flags & JOB_FIRST) { |
ab950546 KB |
1543 | if (usePipes) { |
1544 | int fd[2]; | |
1545 | (void) pipe(fd); | |
1546 | job->inPipe = fd[0]; | |
1547 | job->outPipe = fd[1]; | |
1548 | (void)fcntl (job->inPipe, F_SETFD, 1); | |
1549 | (void)fcntl (job->outPipe, F_SETFD, 1); | |
1550 | } else { | |
1551 | printf ("Remaking `%s'\n", gn->name); | |
1552 | fflush (stdout); | |
1553 | sprintf (job->outFile, "%s%02d", tfile, jobno); | |
1554 | jobno = (jobno + 1) % 100; | |
1555 | job->outFd = open(job->outFile,O_WRONLY|O_CREAT|O_APPEND,0600); | |
1556 | (void)fcntl (job->outFd, F_SETFD, 1); | |
1557 | } | |
1558 | } | |
1559 | ||
21859cc6 | 1560 | local = TRUE; |
ab950546 | 1561 | |
c78dadaa | 1562 | if (local && (((nLocal >= maxLocal) && |
ab950546 | 1563 | !(job->flags & JOB_SPECIAL) && |
21859cc6 | 1564 | (maxLocal != 0)))) |
ab950546 KB |
1565 | { |
1566 | /* | |
1567 | * The job can only be run locally, but we've hit the limit of | |
1568 | * local concurrency, so put the job on hold until some other job | |
1569 | * finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END) | |
1570 | * may be run locally even when the local limit has been reached | |
1571 | * (e.g. when maxLocal == 0), though they will be exported if at | |
21859cc6 | 1572 | * all possible. |
ab950546 KB |
1573 | */ |
1574 | jobFull = TRUE; | |
1575 | ||
1576 | if (DEBUG(JOB)) { | |
1577 | printf("Can only run job locally.\n"); | |
1578 | } | |
1579 | job->flags |= JOB_RESTART; | |
1580 | (void)Lst_AtEnd(stoppedJobs, (ClientData)job); | |
1581 | } else { | |
1582 | if ((nLocal >= maxLocal) && local) { | |
1583 | /* | |
1584 | * If we're running this job locally as a special case (see above), | |
1585 | * at least say the table is full. | |
1586 | */ | |
1587 | jobFull = TRUE; | |
1588 | if (DEBUG(JOB)) { | |
1589 | printf("Local job queue is full.\n"); | |
1590 | } | |
1591 | } | |
1592 | JobExec(job, argv); | |
1593 | } | |
1594 | return(JOB_RUNNING); | |
1595 | } | |
21859cc6 | 1596 | |
ab950546 KB |
1597 | /*- |
1598 | *----------------------------------------------------------------------- | |
1599 | * JobDoOutput -- | |
1600 | * This function is called at different times depending on | |
1601 | * whether the user has specified that output is to be collected | |
1602 | * via pipes or temporary files. In the former case, we are called | |
1603 | * whenever there is something to read on the pipe. We collect more | |
1604 | * output from the given job and store it in the job's outBuf. If | |
1605 | * this makes up a line, we print it tagged by the job's identifier, | |
1606 | * as necessary. | |
1607 | * If output has been collected in a temporary file, we open the | |
1608 | * file and read it line by line, transfering it to our own | |
1609 | * output channel until the file is empty. At which point we | |
1610 | * remove the temporary file. | |
1611 | * In both cases, however, we keep our figurative eye out for the | |
1612 | * 'noPrint' line for the shell from which the output came. If | |
1613 | * we recognize a line, we don't print it. If the command is not | |
1614 | * alone on the line (the character after it is not \0 or \n), we | |
1615 | * do print whatever follows it. | |
1616 | * | |
1617 | * Results: | |
1618 | * None | |
1619 | * | |
1620 | * Side Effects: | |
1621 | * curPos may be shifted as may the contents of outBuf. | |
1622 | *----------------------------------------------------------------------- | |
1623 | */ | |
1624 | void | |
1625 | JobDoOutput (job, finish) | |
1626 | register Job *job; /* the job whose output needs printing */ | |
1627 | Boolean finish; /* TRUE if this is the last time we'll be | |
1628 | * called for this job */ | |
1629 | { | |
1630 | Boolean gotNL = FALSE; /* true if got a newline */ | |
1631 | register int nr; /* number of bytes read */ | |
1632 | register int i; /* auxiliary index into outBuf */ | |
1633 | register int max; /* limit for i (end of current data) */ | |
1634 | int nRead; /* (Temporary) number of bytes read */ | |
1635 | ||
1636 | char c; /* character after noPrint string */ | |
1637 | FILE *oFILE; /* Stream pointer to shell's output file */ | |
1638 | char inLine[132]; | |
1639 | ||
1640 | ||
1641 | if (usePipes) { | |
1642 | /* | |
1643 | * Read as many bytes as will fit in the buffer. | |
1644 | */ | |
1645 | end_loop: | |
1646 | ||
1647 | nRead = read (job->inPipe, &job->outBuf[job->curPos], | |
1648 | JOB_BUFSIZE - job->curPos); | |
1649 | if (nRead < 0) { | |
1650 | if (DEBUG(JOB)) { | |
1651 | perror("JobDoOutput(piperead)"); | |
1652 | } | |
1653 | nr = 0; | |
1654 | } else { | |
1655 | nr = nRead; | |
1656 | } | |
1657 | ||
1658 | /* | |
1659 | * If we hit the end-of-file (the job is dead), we must flush its | |
1660 | * remaining output, so pretend we read a newline if there's any | |
1661 | * output remaining in the buffer. | |
1662 | * Also clear the 'finish' flag so we stop looping. | |
1663 | */ | |
1664 | if ((nr == 0) && (job->curPos != 0)) { | |
1665 | job->outBuf[job->curPos] = '\n'; | |
1666 | nr = 1; | |
1667 | finish = FALSE; | |
1668 | } else if (nr == 0) { | |
1669 | finish = FALSE; | |
1670 | } | |
1671 | ||
1672 | /* | |
1673 | * Look for the last newline in the bytes we just got. If there is | |
1674 | * one, break out of the loop with 'i' as its index and gotNL set | |
1675 | * TRUE. | |
1676 | */ | |
1677 | max = job->curPos + nr; | |
1678 | for (i = job->curPos + nr - 1; i >= job->curPos; i--) { | |
1679 | if (job->outBuf[i] == '\n') { | |
1680 | gotNL = TRUE; | |
1681 | break; | |
1682 | } else if (job->outBuf[i] == '\0') { | |
1683 | /* | |
1684 | * Why? | |
1685 | */ | |
1686 | job->outBuf[i] = ' '; | |
1687 | } | |
1688 | } | |
1689 | ||
1690 | if (!gotNL) { | |
1691 | job->curPos += nr; | |
1692 | if (job->curPos == JOB_BUFSIZE) { | |
1693 | /* | |
1694 | * If we've run out of buffer space, we have no choice | |
1695 | * but to print the stuff. sigh. | |
1696 | */ | |
1697 | gotNL = TRUE; | |
1698 | i = job->curPos; | |
1699 | } | |
1700 | } | |
1701 | if (gotNL) { | |
1702 | /* | |
1703 | * Need to send the output to the screen. Null terminate it | |
1704 | * first, overwriting the newline character if there was one. | |
1705 | * So long as the line isn't one we should filter (according | |
1706 | * to the shell description), we print the line, preceeded | |
1707 | * by a target banner if this target isn't the same as the | |
1708 | * one for which we last printed something. | |
1709 | * The rest of the data in the buffer are then shifted down | |
1710 | * to the start of the buffer and curPos is set accordingly. | |
1711 | */ | |
1712 | job->outBuf[i] = '\0'; | |
1713 | if (i >= job->curPos) { | |
1714 | register char *cp, *ecp; | |
1715 | ||
1716 | cp = job->outBuf; | |
1717 | if (commandShell->noPrint) { | |
1718 | ecp = Str_FindSubstring(job->outBuf, | |
1719 | commandShell->noPrint); | |
1720 | while (ecp != (char *)NULL) { | |
1721 | if (cp != ecp) { | |
1722 | *ecp = '\0'; | |
1723 | if (job->node != lastNode) { | |
1724 | printf (targFmt, job->node->name); | |
1725 | lastNode = job->node; | |
1726 | } | |
1727 | /* | |
1728 | * The only way there wouldn't be a newline after | |
1729 | * this line is if it were the last in the buffer. | |
1730 | * however, since the non-printable comes after it, | |
1731 | * there must be a newline, so we don't print one. | |
1732 | */ | |
1733 | printf ("%s", cp); | |
1734 | } | |
1735 | cp = ecp + commandShell->noPLen; | |
1736 | if (cp != &job->outBuf[i]) { | |
1737 | /* | |
1738 | * Still more to print, look again after skipping | |
1739 | * the whitespace following the non-printable | |
1740 | * command.... | |
1741 | */ | |
1742 | cp++; | |
1743 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') { | |
1744 | cp++; | |
1745 | } | |
1746 | ecp = Str_FindSubstring (cp, | |
1747 | commandShell->noPrint); | |
1748 | } else { | |
1749 | break; | |
1750 | } | |
1751 | } | |
1752 | } | |
1753 | ||
1754 | /* | |
1755 | * There's still more in that thar buffer. This time, though, | |
1756 | * we know there's no newline at the end, so we add one of | |
1757 | * our own free will. | |
1758 | */ | |
1759 | if (*cp != '\0') { | |
1760 | if (job->node != lastNode) { | |
1761 | printf (targFmt, job->node->name); | |
1762 | lastNode = job->node; | |
1763 | } | |
1764 | printf ("%s\n", cp); | |
1765 | } | |
1766 | ||
1767 | fflush (stdout); | |
1768 | } | |
1769 | if (i < max - 1) { | |
1770 | bcopy (&job->outBuf[i + 1], /* shift the remaining */ | |
1771 | job->outBuf, /* characters down */ | |
1772 | max - (i + 1)); | |
1773 | job->curPos = max - (i + 1); | |
1774 | ||
1775 | } else { | |
1776 | /* | |
1777 | * We have written everything out, so we just start over | |
1778 | * from the start of the buffer. No copying. No nothing. | |
1779 | */ | |
1780 | job->curPos = 0; | |
1781 | } | |
1782 | } | |
1783 | if (finish) { | |
1784 | /* | |
1785 | * If the finish flag is true, we must loop until we hit | |
1786 | * end-of-file on the pipe. This is guaranteed to happen eventually | |
1787 | * since the other end of the pipe is now closed (we closed it | |
1788 | * explicitly and the child has exited). When we do get an EOF, | |
1789 | * finish will be set FALSE and we'll fall through and out. | |
1790 | */ | |
1791 | goto end_loop; | |
1792 | } | |
1793 | } else { | |
1794 | /* | |
1795 | * We've been called to retrieve the output of the job from the | |
1796 | * temporary file where it's been squirreled away. This consists of | |
1797 | * opening the file, reading the output line by line, being sure not | |
1798 | * to print the noPrint line for the shell we used, then close and | |
1799 | * remove the temporary file. Very simple. | |
1800 | * | |
1801 | * Change to read in blocks and do FindSubString type things as for | |
1802 | * pipes? That would allow for "@echo -n..." | |
1803 | */ | |
1804 | oFILE = fopen (job->outFile, "r"); | |
1805 | if (oFILE != (FILE *) NULL) { | |
1806 | printf ("Results of making %s:\n", job->node->name); | |
1807 | while (fgets (inLine, sizeof(inLine), oFILE) != NULL) { | |
1808 | register char *cp, *ecp, *endp; | |
1809 | ||
1810 | cp = inLine; | |
1811 | endp = inLine + strlen(inLine); | |
1812 | if (endp[-1] == '\n') { | |
1813 | *--endp = '\0'; | |
1814 | } | |
1815 | if (commandShell->noPrint) { | |
1816 | ecp = Str_FindSubstring(cp, commandShell->noPrint); | |
1817 | while (ecp != (char *)NULL) { | |
1818 | if (cp != ecp) { | |
1819 | *ecp = '\0'; | |
1820 | /* | |
1821 | * The only way there wouldn't be a newline after | |
1822 | * this line is if it were the last in the buffer. | |
1823 | * however, since the non-printable comes after it, | |
1824 | * there must be a newline, so we don't print one. | |
1825 | */ | |
1826 | printf ("%s", cp); | |
1827 | } | |
1828 | cp = ecp + commandShell->noPLen; | |
1829 | if (cp != endp) { | |
1830 | /* | |
1831 | * Still more to print, look again after skipping | |
1832 | * the whitespace following the non-printable | |
1833 | * command.... | |
1834 | */ | |
1835 | cp++; | |
1836 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') { | |
1837 | cp++; | |
1838 | } | |
1839 | ecp = Str_FindSubstring(cp, commandShell->noPrint); | |
1840 | } else { | |
1841 | break; | |
1842 | } | |
1843 | } | |
1844 | } | |
1845 | ||
1846 | /* | |
1847 | * There's still more in that thar buffer. This time, though, | |
1848 | * we know there's no newline at the end, so we add one of | |
1849 | * our own free will. | |
1850 | */ | |
1851 | if (*cp != '\0') { | |
1852 | printf ("%s\n", cp); | |
1853 | } | |
1854 | } | |
1855 | fclose (oFILE); | |
1856 | (void) unlink (job->outFile); | |
1857 | } | |
1858 | } | |
1859 | fflush(stdout); | |
1860 | } | |
21859cc6 | 1861 | |
ab950546 KB |
1862 | /*- |
1863 | *----------------------------------------------------------------------- | |
1864 | * Job_CatchChildren -- | |
1865 | * Handle the exit of a child. Called from Make_Make. | |
1866 | * | |
1867 | * Results: | |
1868 | * none. | |
1869 | * | |
1870 | * Side Effects: | |
1871 | * The job descriptor is removed from the list of children. | |
1872 | * | |
1873 | * Notes: | |
1874 | * We do waits, blocking or not, according to the wisdom of our | |
1875 | * caller, until there are no more children to report. For each | |
1876 | * job, call JobFinish to finish things off. This will take care of | |
1877 | * putting jobs on the stoppedJobs queue. | |
1878 | * | |
1879 | *----------------------------------------------------------------------- | |
1880 | */ | |
1881 | void | |
1882 | Job_CatchChildren (block) | |
1883 | Boolean block; /* TRUE if should block on the wait. */ | |
1884 | { | |
1885 | int pid; /* pid of dead child */ | |
1886 | register Job *job; /* job descriptor for dead child */ | |
1887 | LstNode jnode; /* list element for finding job */ | |
1888 | union wait status; /* Exit/termination status */ | |
1889 | ||
1890 | /* | |
1891 | * Don't even bother if we know there's no one around. | |
1892 | */ | |
1893 | if (nLocal == 0) { | |
1894 | return; | |
1895 | } | |
1896 | ||
1897 | while ((pid = wait3(&status, (block?0:WNOHANG)|WUNTRACED, | |
1898 | (struct rusage *)0)) > 0) | |
1899 | { | |
fb622282 | 1900 | if (DEBUG(JOB)) |
ab950546 | 1901 | printf("Process %d exited or stopped.\n", pid); |
ab950546 KB |
1902 | |
1903 | ||
1904 | jnode = Lst_Find (jobs, (ClientData)pid, JobCmpPid); | |
1905 | ||
1906 | if (jnode == NILLNODE) { | |
1907 | if (WIFSIGNALED(status) && (status.w_termsig == SIGCONT)) { | |
1908 | jnode = Lst_Find(stoppedJobs, (ClientData)pid, JobCmpPid); | |
1909 | if (jnode == NILLNODE) { | |
ab950546 | 1910 | Error("Resumed child (%d) not in table", pid); |
ab950546 KB |
1911 | continue; |
1912 | } | |
1913 | job = (Job *)Lst_Datum(jnode); | |
1914 | (void)Lst_Remove(stoppedJobs, jnode); | |
1915 | } else { | |
ab950546 | 1916 | Error ("Child (%d) not in table?", pid); |
ab950546 KB |
1917 | continue; |
1918 | } | |
1919 | } else { | |
1920 | job = (Job *) Lst_Datum (jnode); | |
1921 | (void)Lst_Remove (jobs, jnode); | |
1922 | nJobs -= 1; | |
1923 | if (jobFull && DEBUG(JOB)) { | |
1924 | printf("Job queue is no longer full.\n"); | |
1925 | } | |
1926 | jobFull = FALSE; | |
21859cc6 | 1927 | nLocal -= 1; |
ab950546 KB |
1928 | } |
1929 | ||
1930 | JobFinish (job, status); | |
1931 | } | |
1932 | } | |
21859cc6 | 1933 | |
ab950546 KB |
1934 | /*- |
1935 | *----------------------------------------------------------------------- | |
1936 | * Job_CatchOutput -- | |
1937 | * Catch the output from our children, if we're using | |
1938 | * pipes do so. Otherwise just block time until we get a | |
1939 | * signal (most likely a SIGCHLD) since there's no point in | |
1940 | * just spinning when there's nothing to do and the reaping | |
1941 | * of a child can wait for a while. | |
1942 | * | |
1943 | * Results: | |
1944 | * None | |
1945 | * | |
1946 | * Side Effects: | |
1947 | * Output is read from pipes if we're piping. | |
1948 | * ----------------------------------------------------------------------- | |
1949 | */ | |
1950 | void | |
1951 | Job_CatchOutput () | |
1952 | { | |
1953 | int nfds; | |
1954 | struct timeval timeout; | |
1955 | fd_set readfds; | |
1956 | register LstNode ln; | |
1957 | register Job *job; | |
1958 | int pnJobs; /* Previous nJobs */ | |
1959 | ||
1960 | fflush(stdout); | |
1961 | #ifdef RMT_WILL_WATCH | |
1962 | pnJobs = nJobs; | |
1963 | ||
1964 | /* | |
1965 | * It is possible for us to be called with nJobs equal to 0. This happens | |
1966 | * if all the jobs finish and a job that is stopped cannot be run | |
1967 | * locally (eg if maxLocal is 0) and cannot be exported. The job will | |
1968 | * be placed back on the stoppedJobs queue, Job_Empty() will return false, | |
1969 | * Make_Run will call us again when there's nothing for which to wait. | |
1970 | * nJobs never changes, so we loop forever. Hence the check. It could | |
1971 | * be argued that we should sleep for a bit so as not to swamp the | |
1972 | * exportation system with requests. Perhaps we should. | |
1973 | * | |
1974 | * NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren | |
1975 | * IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT. | |
1976 | * It may use the variable nLocal to determine if it needs to call | |
1977 | * Job_CatchChildren (if nLocal is 0, there's nothing for which to | |
1978 | * wait...) | |
1979 | */ | |
1980 | while (nJobs != 0 && pnJobs == nJobs) { | |
1981 | Rmt_Wait(); | |
1982 | } | |
1983 | #else | |
1984 | if (usePipes) { | |
1985 | readfds = outputs; | |
1986 | timeout.tv_sec = SEL_SEC; | |
1987 | timeout.tv_usec = SEL_USEC; | |
1988 | ||
1989 | if ((nfds = select (FD_SETSIZE, &readfds, (int *) 0, (int *) 0, &timeout)) < 0) | |
1990 | { | |
1991 | return; | |
1992 | } else { | |
1993 | if (Lst_Open (jobs) == FAILURE) { | |
1994 | Punt ("Cannot open job table"); | |
1995 | } | |
1996 | while (nfds && (ln = Lst_Next (jobs)) != NILLNODE) { | |
1997 | job = (Job *) Lst_Datum (ln); | |
1998 | if (FD_ISSET(job->inPipe, &readfds)) { | |
1999 | JobDoOutput (job, FALSE); | |
2000 | nfds -= 1; | |
2001 | } | |
2002 | } | |
2003 | Lst_Close (jobs); | |
2004 | } | |
2005 | } | |
2006 | #endif /* RMT_WILL_WATCH */ | |
2007 | } | |
21859cc6 | 2008 | |
ab950546 KB |
2009 | /*- |
2010 | *----------------------------------------------------------------------- | |
2011 | * Job_Make -- | |
2012 | * Start the creation of a target. Basically a front-end for | |
2013 | * JobStart used by the Make module. | |
2014 | * | |
2015 | * Results: | |
2016 | * None. | |
2017 | * | |
2018 | * Side Effects: | |
2019 | * Another job is started. | |
2020 | * | |
2021 | *----------------------------------------------------------------------- | |
2022 | */ | |
2023 | void | |
2024 | Job_Make (gn) | |
2025 | GNode *gn; | |
2026 | { | |
2027 | (void)JobStart (gn, 0, (Job *)NULL); | |
2028 | } | |
21859cc6 | 2029 | |
ab950546 KB |
2030 | /*- |
2031 | *----------------------------------------------------------------------- | |
2032 | * Job_Init -- | |
2033 | * Initialize the process module | |
2034 | * | |
2035 | * Results: | |
2036 | * none | |
2037 | * | |
2038 | * Side Effects: | |
2039 | * lists and counters are initialized | |
2040 | *----------------------------------------------------------------------- | |
2041 | */ | |
2042 | void | |
2043 | Job_Init (maxproc, maxlocal) | |
2044 | int maxproc; /* the greatest number of jobs which may be | |
2045 | * running at one time */ | |
2046 | int maxlocal; /* the greatest number of local jobs which may | |
2047 | * be running at once. */ | |
2048 | { | |
2049 | GNode *begin; /* node for commands to do at the very start */ | |
2050 | ||
ab950546 | 2051 | sprintf (tfile, "/tmp/make%05d", getpid()); |
ab950546 KB |
2052 | |
2053 | jobs = Lst_Init (FALSE); | |
2054 | stoppedJobs = Lst_Init(FALSE); | |
2055 | maxJobs = maxproc; | |
2056 | maxLocal = maxlocal; | |
2057 | nJobs = 0; | |
2058 | nLocal = 0; | |
2059 | jobFull = FALSE; | |
2060 | ||
2061 | aborting = 0; | |
2062 | errors = 0; | |
2063 | ||
2064 | lastNode = NILGNODE; | |
2065 | ||
2066 | if (maxJobs == 1) { | |
2067 | /* | |
2068 | * If only one job can run at a time, there's no need for a banner, | |
2069 | * no is there? | |
2070 | */ | |
2071 | targFmt = ""; | |
2072 | } else { | |
2073 | targFmt = TARG_FMT; | |
2074 | } | |
2075 | ||
2076 | if (shellPath == (char *) NULL) { | |
2077 | /* | |
2078 | * The user didn't specify a shell to use, so we are using the | |
2079 | * default one... Both the absolute path and the last component | |
2080 | * must be set. The last component is taken from the 'name' field | |
2081 | * of the default shell description pointed-to by commandShell. | |
aabb6217 | 2082 | * All default shells are located in _PATH_DEFSHELLDIR. |
ab950546 KB |
2083 | */ |
2084 | shellName = commandShell->name; | |
72dbcd0c | 2085 | shellPath = str_concat (_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH); |
ab950546 KB |
2086 | } |
2087 | ||
2088 | if (commandShell->exit == (char *)NULL) { | |
2089 | commandShell->exit = ""; | |
2090 | } | |
2091 | if (commandShell->echo == (char *)NULL) { | |
2092 | commandShell->echo = ""; | |
2093 | } | |
2094 | ||
2095 | /* | |
2096 | * Catch the four signals that POSIX specifies if they aren't ignored. | |
2097 | * JobPassSig will take care of calling JobInterrupt if appropriate. | |
2098 | */ | |
2099 | if (signal (SIGINT, SIG_IGN) != SIG_IGN) { | |
2100 | signal (SIGINT, JobPassSig); | |
2101 | } | |
2102 | if (signal (SIGHUP, SIG_IGN) != SIG_IGN) { | |
2103 | signal (SIGHUP, JobPassSig); | |
2104 | } | |
2105 | if (signal (SIGQUIT, SIG_IGN) != SIG_IGN) { | |
2106 | signal (SIGQUIT, JobPassSig); | |
2107 | } | |
2108 | if (signal (SIGTERM, SIG_IGN) != SIG_IGN) { | |
2109 | signal (SIGTERM, JobPassSig); | |
2110 | } | |
2111 | /* | |
2112 | * There are additional signals that need to be caught and passed if | |
2113 | * either the export system wants to be told directly of signals or if | |
2114 | * we're giving each job its own process group (since then it won't get | |
2115 | * signals from the terminal driver as we own the terminal) | |
2116 | */ | |
2117 | #if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP) | |
2118 | if (signal (SIGTSTP, SIG_IGN) != SIG_IGN) { | |
2119 | signal (SIGTSTP, JobPassSig); | |
2120 | } | |
2121 | if (signal (SIGTTOU, SIG_IGN) != SIG_IGN) { | |
2122 | signal (SIGTTOU, JobPassSig); | |
2123 | } | |
2124 | if (signal (SIGTTIN, SIG_IGN) != SIG_IGN) { | |
2125 | signal (SIGTTIN, JobPassSig); | |
2126 | } | |
2127 | if (signal (SIGWINCH, SIG_IGN) != SIG_IGN) { | |
2128 | signal (SIGWINCH, JobPassSig); | |
2129 | } | |
2130 | #endif | |
2131 | ||
2132 | begin = Targ_FindNode (".BEGIN", TARG_NOCREATE); | |
2133 | ||
2134 | if (begin != NILGNODE) { | |
2135 | JobStart (begin, JOB_SPECIAL, (Job *)0); | |
2136 | while (nJobs) { | |
2137 | Job_CatchOutput(); | |
2138 | #ifndef RMT_WILL_WATCH | |
2139 | Job_CatchChildren (!usePipes); | |
2140 | #endif /* RMT_WILL_WATCH */ | |
2141 | } | |
2142 | } | |
2143 | postCommands = Targ_FindNode (".END", TARG_CREATE); | |
2144 | } | |
21859cc6 | 2145 | |
ab950546 KB |
2146 | /*- |
2147 | *----------------------------------------------------------------------- | |
2148 | * Job_Full -- | |
2149 | * See if the job table is full. It is considered full if it is OR | |
2150 | * if we are in the process of aborting OR if we have | |
2151 | * reached/exceeded our local quota. This prevents any more jobs | |
2152 | * from starting up. | |
2153 | * | |
2154 | * Results: | |
2155 | * TRUE if the job table is full, FALSE otherwise | |
2156 | * Side Effects: | |
2157 | * None. | |
2158 | *----------------------------------------------------------------------- | |
2159 | */ | |
2160 | Boolean | |
2161 | Job_Full () | |
2162 | { | |
2163 | return (aborting || jobFull); | |
2164 | } | |
21859cc6 | 2165 | |
ab950546 KB |
2166 | /*- |
2167 | *----------------------------------------------------------------------- | |
2168 | * Job_Empty -- | |
2169 | * See if the job table is empty. Because the local concurrency may | |
2170 | * be set to 0, it is possible for the job table to become empty, | |
2171 | * while the list of stoppedJobs remains non-empty. In such a case, | |
2172 | * we want to restart as many jobs as we can. | |
2173 | * | |
2174 | * Results: | |
2175 | * TRUE if it is. FALSE if it ain't. | |
2176 | * | |
2177 | * Side Effects: | |
2178 | * None. | |
2179 | * | |
2180 | * ----------------------------------------------------------------------- | |
2181 | */ | |
2182 | Boolean | |
2183 | Job_Empty () | |
2184 | { | |
2185 | if (nJobs == 0) { | |
2186 | if (!Lst_IsEmpty(stoppedJobs) && !aborting) { | |
2187 | /* | |
2188 | * The job table is obviously not full if it has no jobs in | |
2189 | * it...Try and restart the stopped jobs. | |
2190 | */ | |
2191 | jobFull = FALSE; | |
2192 | while (!jobFull && !Lst_IsEmpty(stoppedJobs)) { | |
2193 | JobRestart((Job *)Lst_DeQueue(stoppedJobs)); | |
2194 | } | |
2195 | return(FALSE); | |
2196 | } else { | |
2197 | return(TRUE); | |
2198 | } | |
2199 | } else { | |
2200 | return(FALSE); | |
2201 | } | |
2202 | } | |
21859cc6 | 2203 | |
ab950546 KB |
2204 | /*- |
2205 | *----------------------------------------------------------------------- | |
2206 | * JobMatchShell -- | |
2207 | * Find a matching shell in 'shells' given its final component. | |
2208 | * | |
2209 | * Results: | |
2210 | * A pointer to the Shell structure. | |
2211 | * | |
2212 | * Side Effects: | |
2213 | * None. | |
2214 | * | |
2215 | *----------------------------------------------------------------------- | |
2216 | */ | |
2217 | static Shell * | |
2218 | JobMatchShell (name) | |
2219 | char *name; /* Final component of shell path */ | |
2220 | { | |
2221 | register Shell *sh; /* Pointer into shells table */ | |
2222 | Shell *match; /* Longest-matching shell */ | |
2223 | register char *cp1, | |
2224 | *cp2; | |
2225 | char *eoname; | |
2226 | ||
2227 | eoname = name + strlen (name); | |
2228 | ||
2229 | match = (Shell *) NULL; | |
2230 | ||
2231 | for (sh = shells; sh->name != NULL; sh++) { | |
2232 | for (cp1 = eoname - strlen (sh->name), cp2 = sh->name; | |
2233 | *cp1 != '\0' && *cp1 == *cp2; | |
2234 | cp1++, cp2++) { | |
2235 | continue; | |
2236 | } | |
2237 | if (*cp1 != *cp2) { | |
2238 | continue; | |
2239 | } else if (match == (Shell *) NULL || | |
2240 | strlen (match->name) < strlen (sh->name)) { | |
2241 | match = sh; | |
2242 | } | |
2243 | } | |
2244 | return (match == (Shell *) NULL ? sh : match); | |
2245 | } | |
21859cc6 | 2246 | |
ab950546 KB |
2247 | /*- |
2248 | *----------------------------------------------------------------------- | |
2249 | * Job_ParseShell -- | |
2250 | * Parse a shell specification and set up commandShell, shellPath | |
2251 | * and shellName appropriately. | |
2252 | * | |
2253 | * Results: | |
2254 | * FAILURE if the specification was incorrect. | |
2255 | * | |
2256 | * Side Effects: | |
2257 | * commandShell points to a Shell structure (either predefined or | |
2258 | * created from the shell spec), shellPath is the full path of the | |
2259 | * shell described by commandShell, while shellName is just the | |
2260 | * final component of shellPath. | |
2261 | * | |
2262 | * Notes: | |
2263 | * A shell specification consists of a .SHELL target, with dependency | |
2264 | * operator, followed by a series of blank-separated words. Double | |
2265 | * quotes can be used to use blanks in words. A backslash escapes | |
2266 | * anything (most notably a double-quote and a space) and | |
2267 | * provides the functionality it does in C. Each word consists of | |
2268 | * keyword and value separated by an equal sign. There should be no | |
2269 | * unnecessary spaces in the word. The keywords are as follows: | |
2270 | * name Name of shell. | |
2271 | * path Location of shell. Overrides "name" if given | |
2272 | * quiet Command to turn off echoing. | |
2273 | * echo Command to turn echoing on | |
2274 | * filter Result of turning off echoing that shouldn't be | |
2275 | * printed. | |
2276 | * echoFlag Flag to turn echoing on at the start | |
2277 | * errFlag Flag to turn error checking on at the start | |
2278 | * hasErrCtl True if shell has error checking control | |
2279 | * check Command to turn on error checking if hasErrCtl | |
2280 | * is TRUE or template of command to echo a command | |
2281 | * for which error checking is off if hasErrCtl is | |
2282 | * FALSE. | |
2283 | * ignore Command to turn off error checking if hasErrCtl | |
2284 | * is TRUE or template of command to execute a | |
2285 | * command so as to ignore any errors it returns if | |
2286 | * hasErrCtl is FALSE. | |
2287 | * | |
2288 | *----------------------------------------------------------------------- | |
2289 | */ | |
2290 | ReturnStatus | |
2291 | Job_ParseShell (line) | |
2292 | char *line; /* The shell spec */ | |
2293 | { | |
2294 | char **words; | |
2295 | int wordCount; | |
2296 | register char **argv; | |
2297 | register int argc; | |
2298 | char *path; | |
2299 | Shell newShell; | |
2300 | Boolean fullSpec = FALSE; | |
2301 | ||
2302 | while (isspace (*line)) { | |
2303 | line++; | |
2304 | } | |
72dbcd0c | 2305 | words = brk_string (line, &wordCount); |
ab950546 KB |
2306 | |
2307 | bzero ((Address)&newShell, sizeof(newShell)); | |
2308 | ||
2309 | /* | |
2310 | * Parse the specification by keyword | |
2311 | */ | |
2312 | for (path = (char *)NULL, argc = wordCount - 1, argv = words + 1; | |
2313 | argc != 0; | |
2314 | argc--, argv++) { | |
2315 | if (strncmp (*argv, "path=", 5) == 0) { | |
2316 | path = &argv[0][5]; | |
2317 | } else if (strncmp (*argv, "name=", 5) == 0) { | |
2318 | newShell.name = &argv[0][5]; | |
2319 | } else { | |
2320 | if (strncmp (*argv, "quiet=", 6) == 0) { | |
2321 | newShell.echoOff = &argv[0][6]; | |
2322 | } else if (strncmp (*argv, "echo=", 5) == 0) { | |
2323 | newShell.echoOn = &argv[0][5]; | |
2324 | } else if (strncmp (*argv, "filter=", 7) == 0) { | |
2325 | newShell.noPrint = &argv[0][7]; | |
2326 | newShell.noPLen = strlen(newShell.noPrint); | |
2327 | } else if (strncmp (*argv, "echoFlag=", 9) == 0) { | |
2328 | newShell.echo = &argv[0][9]; | |
2329 | } else if (strncmp (*argv, "errFlag=", 8) == 0) { | |
2330 | newShell.exit = &argv[0][8]; | |
2331 | } else if (strncmp (*argv, "hasErrCtl=", 10) == 0) { | |
2332 | char c = argv[0][10]; | |
2333 | newShell.hasErrCtl = !((c != 'Y') && (c != 'y') && | |
2334 | (c != 'T') && (c != 't')); | |
2335 | } else if (strncmp (*argv, "check=", 6) == 0) { | |
2336 | newShell.errCheck = &argv[0][6]; | |
2337 | } else if (strncmp (*argv, "ignore=", 7) == 0) { | |
2338 | newShell.ignErr = &argv[0][7]; | |
2339 | } else { | |
2340 | Parse_Error (PARSE_FATAL, "Unknown keyword \"%s\"", | |
2341 | *argv); | |
ab950546 KB |
2342 | return (FAILURE); |
2343 | } | |
2344 | fullSpec = TRUE; | |
2345 | } | |
2346 | } | |
2347 | ||
2348 | if (path == (char *)NULL) { | |
2349 | /* | |
2350 | * If no path was given, the user wants one of the pre-defined shells, | |
2351 | * yes? So we find the one s/he wants with the help of JobMatchShell | |
2352 | * and set things up the right way. shellPath will be set up by | |
2353 | * Job_Init. | |
2354 | */ | |
2355 | if (newShell.name == (char *)NULL) { | |
2356 | Parse_Error (PARSE_FATAL, "Neither path nor name specified"); | |
ab950546 KB |
2357 | return (FAILURE); |
2358 | } else { | |
2359 | commandShell = JobMatchShell (newShell.name); | |
2360 | shellName = newShell.name; | |
2361 | } | |
2362 | } else { | |
2363 | /* | |
2364 | * The user provided a path. If s/he gave nothing else (fullSpec is | |
2365 | * FALSE), try and find a matching shell in the ones we know of. | |
2366 | * Else we just take the specification at its word and copy it | |
2367 | * to a new location. In either case, we need to record the | |
2368 | * path the user gave for the shell. | |
2369 | */ | |
2370 | shellPath = path; | |
2371 | path = rindex (path, '/'); | |
2372 | if (path == (char *)NULL) { | |
2373 | path = shellPath; | |
2374 | } else { | |
2375 | path += 1; | |
2376 | } | |
2377 | if (newShell.name != (char *)NULL) { | |
2378 | shellName = newShell.name; | |
2379 | } else { | |
2380 | shellName = path; | |
2381 | } | |
2382 | if (!fullSpec) { | |
2383 | commandShell = JobMatchShell (shellName); | |
2384 | } else { | |
72dbcd0c | 2385 | commandShell = (Shell *) emalloc(sizeof(Shell)); |
ab950546 KB |
2386 | *commandShell = newShell; |
2387 | } | |
2388 | } | |
2389 | ||
2390 | if (commandShell->echoOn && commandShell->echoOff) { | |
2391 | commandShell->hasEchoCtl = TRUE; | |
2392 | } | |
2393 | ||
2394 | if (!commandShell->hasErrCtl) { | |
2395 | if (commandShell->errCheck == (char *)NULL) { | |
2396 | commandShell->errCheck = ""; | |
2397 | } | |
2398 | if (commandShell->ignErr == (char *)NULL) { | |
2399 | commandShell->ignErr = "%s\n"; | |
2400 | } | |
2401 | } | |
2402 | ||
2403 | /* | |
2404 | * Do not free up the words themselves, since they might be in use by the | |
2405 | * shell specification... | |
2406 | */ | |
2407 | free (words); | |
2408 | return SUCCESS; | |
2409 | } | |
21859cc6 | 2410 | |
ab950546 KB |
2411 | /*- |
2412 | *----------------------------------------------------------------------- | |
2413 | * JobInterrupt -- | |
2414 | * Handle the receipt of an interrupt. | |
2415 | * | |
2416 | * Results: | |
2417 | * None | |
2418 | * | |
2419 | * Side Effects: | |
2420 | * All children are killed. Another job will be started if the | |
2421 | * .INTERRUPT target was given. | |
2422 | *----------------------------------------------------------------------- | |
2423 | */ | |
2424 | static void | |
2425 | JobInterrupt (runINTERRUPT) | |
2426 | int runINTERRUPT; /* Non-zero if commands for the .INTERRUPT | |
2427 | * target should be executed */ | |
2428 | { | |
2429 | LstNode ln; /* element in job table */ | |
2430 | Job *job; /* job descriptor in that element */ | |
2431 | GNode *interrupt; /* the node describing the .INTERRUPT target */ | |
2432 | ||
2433 | aborting = ABORT_INTERRUPT; | |
2434 | ||
2435 | (void)Lst_Open (jobs); | |
2436 | while ((ln = Lst_Next (jobs)) != NILLNODE) { | |
2437 | job = (Job *) Lst_Datum (ln); | |
2438 | ||
2439 | if (!Targ_Precious (job->node)) { | |
2440 | char *file = (job->node->path == (char *)NULL ? | |
2441 | job->node->name : | |
2442 | job->node->path); | |
2443 | if (unlink (file) == 0) { | |
2444 | Error ("*** %s removed", file); | |
2445 | } | |
2446 | } | |
2447 | #ifdef RMT_WANTS_SIGNALS | |
2448 | if (job->flags & JOB_REMOTE) { | |
2449 | /* | |
2450 | * If job is remote, let the Rmt module do the killing. | |
2451 | */ | |
2452 | if (!Rmt_Signal(job, SIGINT)) { | |
2453 | /* | |
2454 | * If couldn't kill the thing, finish it out now with an | |
2455 | * error code, since no exit report will come in likely. | |
2456 | */ | |
2457 | union wait status; | |
2458 | ||
2459 | status.w_status = 0; | |
2460 | status.w_retcode = 1; | |
2461 | JobFinish(job, status); | |
2462 | } | |
2463 | } else if (job->pid) { | |
2464 | KILL(job->pid, SIGINT); | |
2465 | } | |
2466 | #else | |
2467 | if (job->pid) { | |
2468 | KILL(job->pid, SIGINT); | |
2469 | } | |
2470 | #endif /* RMT_WANTS_SIGNALS */ | |
2471 | } | |
2472 | Lst_Close (jobs); | |
2473 | ||
2474 | if (runINTERRUPT && !touchFlag) { | |
2475 | interrupt = Targ_FindNode (".INTERRUPT", TARG_NOCREATE); | |
2476 | if (interrupt != NILGNODE) { | |
2477 | ignoreErrors = FALSE; | |
2478 | ||
2479 | JobStart (interrupt, JOB_IGNDOTS, (Job *)0); | |
2480 | while (nJobs) { | |
2481 | Job_CatchOutput(); | |
2482 | #ifndef RMT_WILL_WATCH | |
2483 | Job_CatchChildren (!usePipes); | |
2484 | #endif /* RMT_WILL_WATCH */ | |
2485 | } | |
2486 | } | |
2487 | } | |
2488 | (void) unlink (tfile); | |
2489 | exit (0); | |
2490 | } | |
21859cc6 | 2491 | |
ab950546 KB |
2492 | /* |
2493 | *----------------------------------------------------------------------- | |
2494 | * Job_End -- | |
2495 | * Do final processing such as the running of the commands | |
2496 | * attached to the .END target. | |
2497 | * | |
2498 | * Results: | |
2499 | * Number of errors reported. | |
2500 | * | |
2501 | * Side Effects: | |
2502 | * The process' temporary file (tfile) is removed if it still | |
2503 | * existed. | |
2504 | *----------------------------------------------------------------------- | |
2505 | */ | |
2506 | int | |
2507 | Job_End () | |
2508 | { | |
2509 | if (postCommands != NILGNODE && !Lst_IsEmpty (postCommands->commands)) { | |
2510 | if (errors) { | |
2511 | Error ("Errors reported so .END ignored"); | |
2512 | } else { | |
2513 | JobStart (postCommands, JOB_SPECIAL | JOB_IGNDOTS, | |
2514 | (Job *)0); | |
2515 | ||
2516 | while (nJobs) { | |
2517 | Job_CatchOutput(); | |
2518 | #ifndef RMT_WILL_WATCH | |
2519 | Job_CatchChildren (!usePipes); | |
2520 | #endif /* RMT_WILL_WATCH */ | |
2521 | } | |
2522 | } | |
2523 | } | |
2524 | (void) unlink (tfile); | |
2525 | return(errors); | |
2526 | } | |
21859cc6 | 2527 | |
ab950546 KB |
2528 | /*- |
2529 | *----------------------------------------------------------------------- | |
2530 | * Job_Wait -- | |
2531 | * Waits for all running jobs to finish and returns. Sets 'aborting' | |
2532 | * to ABORT_WAIT to prevent other jobs from starting. | |
2533 | * | |
2534 | * Results: | |
2535 | * None. | |
2536 | * | |
2537 | * Side Effects: | |
2538 | * Currently running jobs finish. | |
2539 | * | |
2540 | *----------------------------------------------------------------------- | |
2541 | */ | |
2542 | void | |
2543 | Job_Wait() | |
2544 | { | |
2545 | aborting = ABORT_WAIT; | |
2546 | while (nJobs != 0) { | |
2547 | Job_CatchOutput(); | |
2548 | #ifndef RMT_WILL_WATCH | |
2549 | Job_CatchChildren(!usePipes); | |
2550 | #endif /* RMT_WILL_WATCH */ | |
2551 | } | |
2552 | aborting = 0; | |
2553 | } | |
21859cc6 | 2554 | |
ab950546 KB |
2555 | /*- |
2556 | *----------------------------------------------------------------------- | |
2557 | * Job_AbortAll -- | |
2558 | * Abort all currently running jobs without handling output or anything. | |
2559 | * This function is to be called only in the event of a major | |
2560 | * error. Most definitely NOT to be called from JobInterrupt. | |
2561 | * | |
2562 | * Results: | |
2563 | * None | |
2564 | * | |
2565 | * Side Effects: | |
2566 | * All children are killed, not just the firstborn | |
2567 | *----------------------------------------------------------------------- | |
2568 | */ | |
2569 | void | |
2570 | Job_AbortAll () | |
2571 | { | |
2572 | LstNode ln; /* element in job table */ | |
2573 | Job *job; /* the job descriptor in that element */ | |
2574 | int foo; | |
2575 | ||
2576 | aborting = ABORT_ERROR; | |
2577 | ||
2578 | if (nJobs) { | |
2579 | ||
2580 | (void)Lst_Open (jobs); | |
2581 | while ((ln = Lst_Next (jobs)) != NILLNODE) { | |
2582 | job = (Job *) Lst_Datum (ln); | |
2583 | ||
2584 | /* | |
2585 | * kill the child process with increasingly drastic signals to make | |
2586 | * darn sure it's dead. | |
2587 | */ | |
2588 | #ifdef RMT_WANTS_SIGNALS | |
2589 | if (job->flags & JOB_REMOTE) { | |
2590 | Rmt_Signal(job, SIGINT); | |
2591 | Rmt_Signal(job, SIGKILL); | |
2592 | } else { | |
2593 | KILL(job->pid, SIGINT); | |
2594 | KILL(job->pid, SIGKILL); | |
2595 | } | |
2596 | #else | |
2597 | KILL(job->pid, SIGINT); | |
2598 | KILL(job->pid, SIGKILL); | |
2599 | #endif /* RMT_WANTS_SIGNALS */ | |
2600 | } | |
2601 | } | |
2602 | ||
2603 | /* | |
2604 | * Catch as many children as want to report in at first, then give up | |
2605 | */ | |
2606 | while (wait3(&foo, WNOHANG, (struct rusage *)0) > 0) { | |
2607 | ; | |
2608 | } | |
2609 | (void) unlink (tfile); | |
2610 | } |