Annotation of src/usr.bin/make/job.c, Revision 1.59
1.40 espie 1: /* $OpenPackages$ */
1.59 ! deraadt 2: /* $OpenBSD: job.c,v 1.58 2004/11/29 06:20:03 jsg Exp $ */
1.6 millert 3: /* $NetBSD: job.c,v 1.16 1996/11/06 17:59:08 christos Exp $ */
1.1 deraadt 4:
5: /*
6: * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
7: * Copyright (c) 1988, 1989 by Adam de Boor
8: * Copyright (c) 1989 by Berkeley Softworks
9: * All rights reserved.
10: *
11: * This code is derived from software contributed to Berkeley by
12: * Adam de Boor.
13: *
14: * Redistribution and use in source and binary forms, with or without
15: * modification, are permitted provided that the following conditions
16: * are met:
17: * 1. Redistributions of source code must retain the above copyright
18: * notice, this list of conditions and the following disclaimer.
19: * 2. Redistributions in binary form must reproduce the above copyright
20: * notice, this list of conditions and the following disclaimer in the
21: * documentation and/or other materials provided with the distribution.
1.55 millert 22: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: */
38:
39: /*-
40: * job.c --
41: * handle the creation etc. of our child processes.
42: *
43: * Interface:
1.40 espie 44: * Job_Make Start the creation of the given target.
1.1 deraadt 45: *
1.40 espie 46: * Job_CatchChildren Check for and handle the termination of any
47: * children. This must be called reasonably
48: * frequently to keep the whole make going at
49: * a decent clip, since job table entries aren't
50: * removed until their process is caught this way.
1.41 espie 51: * Its single argument is true if the function
1.40 espie 52: * should block waiting for a child to terminate.
53: *
54: * Job_CatchOutput Print any output our children have produced.
55: * Should also be called fairly frequently to
56: * keep the user informed of what's going on.
57: * If no output is waiting, it will block for
58: * a time given by the SEL_* constants, below,
59: * or until output is ready.
60: *
1.53 jmc 61: * Job_Init Called to initialize this module. in addition,
1.40 espie 62: * any commands attached to the .BEGIN target
63: * are executed before this function returns.
64: * Hence, the makefile must have been parsed
65: * before this function is called.
66: *
67: * Job_End Cleanup any memory used.
68: *
1.41 espie 69: * Job_Full Return true if the job table is filled.
1.40 espie 70: *
1.41 espie 71: * Job_Empty Return true if the job table is completely
1.40 espie 72: * empty.
73: *
74: * Job_ParseShell Given the line following a .SHELL target, parse
75: * the line as a shell specification. Returns
1.41 espie 76: * false if the spec was incorrect.
1.40 espie 77: *
78: * Job_Finish Perform any final processing which needs doing.
79: * This includes the execution of any commands
80: * which have been/were attached to the .END
81: * target. It should only be called when the
82: * job table is empty.
83: *
84: * Job_AbortAll Abort all currently running jobs. It doesn't
85: * handle output or do anything for the jobs,
86: * just kills them. It should only be called in
87: * an emergency, as it were.
1.1 deraadt 88: *
1.40 espie 89: * Job_CheckCommands Verify that the commands for a target are
90: * ok. Provide them if necessary and possible.
1.1 deraadt 91: *
1.40 espie 92: * Job_Touch Update a target without really updating it.
1.1 deraadt 93: *
1.40 espie 94: * Job_Wait Wait for all currently-running jobs to finish.
1.1 deraadt 95: */
96:
97: #include <sys/types.h>
98: #include <sys/wait.h>
1.41 espie 99: #include <ctype.h>
100: #include <errno.h>
1.1 deraadt 101: #include <fcntl.h>
1.42 espie 102: #include <limits.h>
1.41 espie 103: #include <signal.h>
1.36 espie 104: #include <stddef.h>
1.1 deraadt 105: #include <stdio.h>
1.42 espie 106: #include <stdlib.h>
1.1 deraadt 107: #include <string.h>
1.41 espie 108: #include <unistd.h>
109: #include "config.h"
110: #include "defines.h"
1.1 deraadt 111: #include "dir.h"
112: #include "job.h"
113: #include "pathnames.h"
1.41 espie 114: #include "arch.h"
115: #include "var.h"
116: #include "targ.h"
117: #include "error.h"
118: #include "str.h"
119: #include "lst.h"
120: #include "extern.h"
121: #include "gnode.h"
122: #include "memory.h"
123: #include "make.h"
124: #include "timestamp.h"
125: #include "main.h"
126:
1.50 espie 127: #define TMPPAT "/tmp/makeXXXXXXXXXX"
128:
129: /*
130: * The SEL_ constants determine the maximum amount of time spent in select
131: * before coming out to see if a child has finished. SEL_SEC is the number of
132: * seconds and SEL_USEC is the number of micro-seconds
133: */
134: #define SEL_SEC 0
135: #define SEL_USEC 500000
136:
137:
138: /*-
139: * Job Table definitions.
140: *
141: * Each job has several things associated with it:
142: * 1) The process id of the child shell
143: * 2) The graph node describing the target being made by this job
144: * 3) A LstNode for the first command to be saved after the job
145: * completes. This is NULL if there was no "..." in the job's
146: * commands.
147: * 4) An FILE* for writing out the commands. This is only
148: * used before the job is actually started.
149: * 5) A union of things used for handling the shell's output. Different
150: * parts of the union are used based on the value of the usePipes
151: * flag. If it is true, the output is being caught via a pipe and
152: * the descriptors of our pipe, an array in which output is line
153: * buffered and the current position in that buffer are all
154: * maintained for each job. If, on the other hand, usePipes is false,
155: * the output is routed to a temporary file and all that is kept
156: * is the name of the file and the descriptor open to the file.
157: * 6) An identifier provided by and for the exclusive use of the
158: * Rmt module.
159: * 7) A word of flags which determine how the module handles errors,
160: * echoing, etc. for the job
161: *
162: * The job "table" is kept as a linked Lst in 'jobs', with the number of
163: * active jobs maintained in the 'nJobs' variable. At no time will this
164: * exceed the value of 'maxJobs', initialized by the Job_Init function.
165: *
166: * When a job is finished, the Make_Update function is called on each of the
167: * parents of the node which was just remade. This takes care of the upward
168: * traversal of the dependency graph.
169: */
170: #define JOB_BUFSIZE 1024
171: typedef struct Job_ {
1.51 mpech 172: pid_t pid; /* The child's process ID */
1.50 espie 173: GNode *node; /* The target the child is making */
174: LstNode tailCmds; /* The node of the first command to be
175: * saved when the job has been run */
176: FILE *cmdFILE; /* When creating the shell script, this is
177: * where the commands go */
178: int rmtID; /* ID returned from Rmt module */
179: short flags; /* Flags to control treatment of job */
180: #define JOB_IGNERR 0x001 /* Ignore non-zero exits */
181: #define JOB_SILENT 0x002 /* no output */
182: #define JOB_SPECIAL 0x004 /* Target is a special one. i.e. run it locally
183: * if we can't export it and maxLocal is 0 */
184: #define JOB_IGNDOTS 0x008 /* Ignore "..." lines when processing
185: * commands */
186: #define JOB_FIRST 0x020 /* Job is first job for the node */
187: #define JOB_RESTART 0x080 /* Job needs to be completely restarted */
188: #define JOB_RESUME 0x100 /* Job needs to be resumed b/c it stopped,
189: * for some reason */
190: #define JOB_CONTINUING 0x200 /* We are in the process of resuming this job.
191: * Used to avoid infinite recursion between
192: * JobFinish and JobRestart */
193: union {
194: struct {
195: int op_inPipe; /* Input side of pipe associated
196: * with job's output channel */
197: int op_outPipe; /* Output side of pipe associated with
198: * job's output channel */
199: char op_outBuf[JOB_BUFSIZE + 1];
200: /* Buffer for storing the output of the
201: * job, line by line */
202: int op_curPos; /* Current position in op_outBuf */
203: } o_pipe; /* data used when catching the output via
204: * a pipe */
205: struct {
206: char of_outFile[sizeof(TMPPAT)];
207: /* Name of file to which shell output
208: * was rerouted */
209: int of_outFd; /* Stream open to the output
210: * file. Used to funnel all
211: * from a single job to one file
212: * while still allowing
213: * multiple shell invocations */
214: } o_file; /* Data used when catching the output in
215: * a temporary file */
216: } output; /* Data for tracking a shell's output */
217: } Job;
218:
219: #define outPipe output.o_pipe.op_outPipe
220: #define inPipe output.o_pipe.op_inPipe
221: #define outBuf output.o_pipe.op_outBuf
222: #define curPos output.o_pipe.op_curPos
223: #define outFile output.o_file.of_outFile
224: #define outFd output.o_file.of_outFd
225:
226:
227: /*-
228: * Shell Specifications:
229: * Each shell type has associated with it the following information:
230: * 1) The string which must match the last character of the shell name
231: * for the shell to be considered of this type. The longest match
232: * wins.
233: * 2) A command to issue to turn off echoing of command lines
234: * 3) A command to issue to turn echoing back on again
235: * 4) What the shell prints, and its length, when given the echo-off
236: * command. This line will not be printed when received from the shell
237: * 5) A boolean to tell if the shell has the ability to control
238: * error checking for individual commands.
239: * 6) The string to turn this checking on.
240: * 7) The string to turn it off.
241: * 8) The command-flag to give to cause the shell to start echoing
242: * commands right away.
243: * 9) The command-flag to cause the shell to Lib_Exit when an error is
244: * detected in one of the commands.
245: *
246: * Some special stuff goes on if a shell doesn't have error control. In such
247: * a case, errCheck becomes a printf template for echoing the command,
248: * should echoing be on and ignErr becomes another printf template for
249: * executing the command while ignoring the return status. If either of these
250: * strings is empty when hasErrCtl is false, the command will be executed
251: * anyway as is and if it causes an error, so be it.
252: */
253: typedef struct Shell_ {
254: char *name; /* the name of the shell. For Bourne and C
255: * shells, this is used only to find the
256: * shell description when used as the single
257: * source of a .SHELL target. For user-defined
258: * shells, this is the full path of the shell.
259: */
260: bool hasEchoCtl; /* True if both echoOff and echoOn defined */
261: char *echoOff; /* command to turn off echo */
262: char *echoOn; /* command to turn it back on again */
263: char *noPrint; /* command to skip when printing output from
264: * shell. This is usually the command which
265: * was executed to turn off echoing */
266: int noPLen; /* length of noPrint command */
267: bool hasErrCtl; /* set if can control error checking for
268: * individual commands */
269: char *errCheck; /* string to turn error checking on */
270: char *ignErr; /* string to turn off error checking */
271: /*
272: * command-line flags
273: */
274: char *echo; /* echo commands */
275: char *exit; /* exit on error */
276: } Shell;
277:
1.1 deraadt 278: /*
1.6 millert 279: * error handling variables
1.1 deraadt 280: */
1.40 espie 281: static int errors = 0; /* number of errors reported */
282: static int aborting = 0; /* why is the make aborting? */
283: #define ABORT_ERROR 1 /* Because of an error */
284: #define ABORT_INTERRUPT 2 /* Because it was interrupted */
285: #define ABORT_WAIT 3 /* Waiting for jobs to finish */
1.1 deraadt 286:
1.6 millert 287: /*
1.2 deraadt 288: * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
289: * is a char! So when we go above 127 we turn negative!
290: */
291: #define FILENO(a) ((unsigned) fileno(a))
1.1 deraadt 292:
293: /*
294: * post-make command processing. The node postCommands is really just the
295: * .END target but we keep it around to avoid having to search for it
296: * all the time.
297: */
1.40 espie 298: static GNode *postCommands; /* node containing commands to execute when
1.1 deraadt 299: * everything else is done */
1.40 espie 300: static int numCommands; /* The number of commands actually printed
1.1 deraadt 301: * for a target. Should this number be
302: * 0, no shell will be executed. */
303:
304: /*
305: * Return values from JobStart.
306: */
1.40 espie 307: #define JOB_RUNNING 0 /* Job is running */
308: #define JOB_ERROR 1 /* Error in starting the job */
309: #define JOB_FINISHED 2 /* The job is already finished */
310: #define JOB_STOPPED 3 /* The job is stopped */
1.1 deraadt 311:
312: /*
1.40 espie 313: * tfile is the name of a file into which all shell commands are put. It is
314: * used over by removing it before the child shell is executed. The XXXXXXXXXX
315: * in the string are replaced by mkstemp(3).
1.1 deraadt 316: */
1.40 espie 317: static char tfile[sizeof(TMPPAT)];
1.1 deraadt 318:
319:
320: /*
321: * Descriptions for various shells.
322: */
1.40 espie 323: static Shell shells[] = {
1.1 deraadt 324: /*
325: * CSH description. The csh can do echo control by playing
326: * with the setting of the 'echo' shell variable. Sadly,
327: * however, it is unable to do error control nicely.
328: */
329: {
330: "csh",
1.41 espie 331: true, "unset verbose", "set verbose", "unset verbose", 10,
332: false, "echo \"%s\"\n", "csh -c \"%s || exit 0\"",
1.1 deraadt 333: "v", "e",
334: },
335: /*
336: * SH description. Echo control is also possible and, under
337: * sun UNIX anyway, one can even control error checking.
338: */
339: {
340: "sh",
1.41 espie 341: true, "set -", "set -v", "set -", 5,
342: true, "set -e", "set +e",
1.2 deraadt 343: #ifdef OLDBOURNESHELL
1.41 espie 344: false, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
1.2 deraadt 345: #endif
1.1 deraadt 346: "v", "e",
347: },
348: /*
349: * UNKNOWN.
350: */
351: {
1.40 espie 352: (char *)0,
1.41 espie 353: false, (char *)0, (char *)0, (char *)0, 0,
354: false, (char *)0, (char *)0,
1.40 espie 355: (char *)0, (char *)0,
1.1 deraadt 356: }
357: };
1.40 espie 358: static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
1.1 deraadt 359: * which we pass all
360: * commands in the Makefile.
361: * It is set by the
362: * Job_ParseShell function */
1.40 espie 363: static char *shellPath = NULL, /* full pathname of
1.1 deraadt 364: * executable image */
1.40 espie 365: *shellName = NULL, /* last component of shell */
1.12 espie 366: *shellArgv = NULL; /* Custom shell args */
1.1 deraadt 367:
368:
1.40 espie 369: static int maxJobs; /* The most children we can run at once */
370: static int maxLocal; /* The most local ones we can have */
1.48 espie 371: static int nJobs = 0; /* The number of children currently running */
372: static int nLocal; /* The number of local children */
373: static LIST jobs; /* The structures that describe them */
374: static bool jobFull; /* Flag to tell when the job table is full. It
1.41 espie 375: * is set true when (1) the total number of
1.1 deraadt 376: * running jobs equals the maximum allowed or
377: * (2) a job can only be run locally, but
378: * nLocal equals maxLocal */
1.40 espie 379: static fd_set *outputsp; /* Set of descriptors of pipes connected to
1.1 deraadt 380: * the output channels of children */
1.8 deraadt 381: static int outputsn;
1.48 espie 382: static GNode *lastNode; /* The node for which output was most recently
1.1 deraadt 383: * produced. */
1.48 espie 384: static char *targFmt; /* Format string to use to head output from a
1.1 deraadt 385: * job when it's not the most-recent job heard
386: * from */
1.2 deraadt 387:
388: # define TARG_FMT "--- %s ---\n" /* Default format */
389: # define MESSAGE(fp, gn) \
1.40 espie 390: (void)fprintf(fp, targFmt, gn->name);
1.1 deraadt 391:
392: /*
1.50 espie 393: * When JobStart attempts to run a job but isn't allowed to,
394: * the job is placed on the stoppedJobs queue to be run
1.6 millert 395: * when the next job finishes.
1.1 deraadt 396: */
1.48 espie 397: static LIST stoppedJobs; /* Lst of Job structures describing
1.1 deraadt 398: * jobs that were stopped due to concurrency
399: * limits or migration home */
400:
401:
402: #if defined(USE_PGRP) && defined(SYSV)
1.40 espie 403: # define KILL(pid, sig) killpg(-(pid), (sig))
1.1 deraadt 404: #else
405: # if defined(USE_PGRP)
1.2 deraadt 406: # define KILL(pid, sig) killpg((pid), (sig))
1.1 deraadt 407: # else
1.2 deraadt 408: # define KILL(pid, sig) kill((pid), (sig))
1.1 deraadt 409: # endif
410: #endif
411:
1.6 millert 412: /*
1.2 deraadt 413: * Grmpf... There is no way to set bits of the wait structure
414: * anymore with the stupid W*() macros. I liked the union wait
415: * stuff much more. So, we devise our own macros... This is
416: * really ugly, use dramamine sparingly. You have been warned.
417: */
418: #define W_SETMASKED(st, val, fun) \
419: { \
420: int sh = (int) ~0; \
421: int mask = fun(sh); \
422: \
423: for (sh = 0; ((mask >> sh) & 1) == 0; sh++) \
424: continue; \
425: *(st) = (*(st) & ~mask) | ((val) << sh); \
426: }
427:
428: #define W_SETTERMSIG(st, val) W_SETMASKED(st, val, WTERMSIG)
429: #define W_SETEXITSTATUS(st, val) W_SETMASKED(st, val, WEXITSTATUS)
430:
431:
1.40 espie 432: static void JobCondPassSig(void *, void *);
1.57 espie 433: static void SigHandler(int);
434: static void HandleSigs(void);
1.40 espie 435: static void JobPassSig(int);
436: static int JobCmpPid(void *, void *);
437: static int JobPrintCommand(void *, void *);
438: static void JobSaveCommand(void *, void *);
439: static void JobClose(Job *);
440: static void JobFinish(Job *, int *);
441: static void JobExec(Job *, char **);
442: static void JobMakeArgv(Job *, char **);
443: static void JobRestart(Job *);
444: static int JobStart(GNode *, int, Job *);
445: static char *JobOutput(Job *, char *, char *, int);
1.41 espie 446: static void JobDoOutput(Job *, bool);
1.40 espie 447: static Shell *JobMatchShell(char *);
448: static void JobInterrupt(int, int);
449: static void JobRestartJobs(void);
1.1 deraadt 450:
1.57 espie 451: static volatile sig_atomic_t got_SIGINT, got_SIGHUP, got_SIGQUIT,
452: got_SIGTERM;
453: #if defined(USE_PGRP)
454: static volatile sig_atomic_t got_SIGTSTP, got_SIGTTOU, got_SIGTTIN,
455: got_SIGWINCH;
456: #endif
457:
458: static void
459: SigHandler(int sig)
460: {
461: switch(sig) {
462: case SIGINT:
463: got_SIGINT++;
464: break;
465: case SIGHUP:
466: got_SIGHUP++;
467: break;
468: case SIGQUIT:
469: got_SIGQUIT++;
470: break;
471: case SIGTERM:
472: got_SIGTERM++;
473: break;
474: #if defined(USE_PGRGP)
475: case SIGTSTP:
476: got_SIGTSTP++;
477: break;
478: case SIGTTOU:
479: got_SIGTTOU++;
480: break;
481: case SIGTTIN:
482: got_SIGTTIN++;
483: break;
484: case SIGWINCH:
485: got_SIGWINCH++;
486: break;
487: #endif
488: }
489: }
490:
491: static void
492: HandleSigs()
493: {
494: if (got_SIGINT) {
495: got_SIGINT=0;
496: JobPassSig(SIGINT);
497: }
498: if (got_SIGHUP) {
499: got_SIGHUP=0;
500: JobPassSig(SIGHUP);
501: }
502: if (got_SIGQUIT) {
503: got_SIGQUIT=0;
504: JobPassSig(SIGQUIT);
505: }
506: if (got_SIGTERM) {
507: got_SIGTERM=0;
508: JobPassSig(SIGTERM);
509: }
510: #if defined(USE_PGRP)
511: if (got_SIGTSTP) {
512: got_SIGTSTP=0;
513: JobPassSig(SIGTSTP);
514: }
515: if (got_SIGTTOU) {
516: got_SIGTTOU=0;
517: JobPassSig(SIGTTOU);
518: }
519: if (got_SIGTTIN) {
520: got_SIGTTIN=0;
521: JobPassSig(SIGTTIN);
522: }
523: if (got_SIGWINCH) {
524: got_SIGWINCH=0;
525: JobPassSig(SIGWINCH);
526: }
527: #endif
528: }
529:
1.1 deraadt 530: /*-
531: *-----------------------------------------------------------------------
532: * JobCondPassSig --
1.50 espie 533: * Pass a signal to a job if USE_PGRP
1.1 deraadt 534: * is defined.
535: *
536: * Side Effects:
537: * None, except the job may bite it.
538: *-----------------------------------------------------------------------
539: */
1.27 espie 540: static void
1.56 espie 541: JobCondPassSig(void *jobp, /* Job to biff */
542: void *signop) /* Signal to send it */
1.1 deraadt 543: {
1.40 espie 544: Job *job = (Job *)jobp;
545: int signo = *(int *)signop;
1.2 deraadt 546: if (DEBUG(JOB)) {
1.40 espie 547: (void)fprintf(stdout,
1.51 mpech 548: "JobCondPassSig passing signal %d to child %ld.\n",
549: signo, (long)job->pid);
1.40 espie 550: (void)fflush(stdout);
1.2 deraadt 551: }
1.1 deraadt 552: KILL(job->pid, signo);
553: }
554:
555: /*-
556: *-----------------------------------------------------------------------
557: * JobPassSig --
1.50 espie 558: * Pass a signal to all local jobs if USE_PGRP is defined,
559: * then die ourselves.
1.1 deraadt 560: *
561: * Side Effects:
562: * We die by the same signal.
563: *-----------------------------------------------------------------------
564: */
565: static void
1.56 espie 566: JobPassSig(int signo) /* The signal number we've received */
1.1 deraadt 567: {
1.2 deraadt 568: sigset_t nmask, omask;
1.3 niklas 569: struct sigaction act;
1.6 millert 570:
1.2 deraadt 571: if (DEBUG(JOB)) {
1.40 espie 572: (void)fprintf(stdout, "JobPassSig(%d) called.\n", signo);
573: (void)fflush(stdout);
1.2 deraadt 574: }
1.29 espie 575: Lst_ForEach(&jobs, JobCondPassSig, &signo);
1.1 deraadt 576:
577: /*
578: * Deal with proper cleanup based on the signal received. We only run
579: * the .INTERRUPT target if the signal was in fact an interrupt. The other
580: * three termination signals are more of a "get out *now*" command.
581: */
582: if (signo == SIGINT) {
1.41 espie 583: JobInterrupt(true, signo);
1.40 espie 584: } else if (signo == SIGHUP || signo == SIGTERM || signo == SIGQUIT) {
1.41 espie 585: JobInterrupt(false, signo);
1.1 deraadt 586: }
1.6 millert 587:
1.1 deraadt 588: /*
589: * Leave gracefully if SIGQUIT, rather than core dumping.
590: */
591: if (signo == SIGQUIT) {
592: Finish(0);
593: }
1.6 millert 594:
1.1 deraadt 595: /*
596: * Send ourselves the signal now we've given the message to everyone else.
597: * Note we block everything else possible while we're getting the signal.
598: * This ensures that all our jobs get continued when we wake up before
599: * we take any other signal.
600: */
1.3 niklas 601: sigemptyset(&nmask);
602: sigaddset(&nmask, signo);
603: sigprocmask(SIG_SETMASK, &nmask, &omask);
1.10 deraadt 604: memset(&act, 0, sizeof act);
1.3 niklas 605: act.sa_handler = SIG_DFL;
606: sigemptyset(&act.sa_mask);
607: act.sa_flags = 0;
608: sigaction(signo, &act, NULL);
1.2 deraadt 609:
610: if (DEBUG(JOB)) {
1.40 espie 611: (void)fprintf(stdout,
1.2 deraadt 612: "JobPassSig passing signal to self, mask = %x.\n",
613: ~0 & ~(1 << (signo-1)));
1.40 espie 614: (void)fflush(stdout);
1.2 deraadt 615: }
1.40 espie 616: (void)signal(signo, SIG_DFL);
1.1 deraadt 617:
1.40 espie 618: (void)KILL(getpid(), signo);
1.1 deraadt 619:
620: signo = SIGCONT;
1.29 espie 621: Lst_ForEach(&jobs, JobCondPassSig, &signo);
1.1 deraadt 622:
1.40 espie 623: (void)sigprocmask(SIG_SETMASK, &omask, NULL);
1.3 niklas 624: sigprocmask(SIG_SETMASK, &omask, NULL);
1.57 espie 625: act.sa_handler = SigHandler;
1.3 niklas 626: sigaction(signo, &act, NULL);
1.1 deraadt 627: }
628:
629: /*-
630: *-----------------------------------------------------------------------
631: * JobCmpPid --
632: * Compare the pid of the job with the given pid and return 0 if they
633: * are equal. This function is called from Job_CatchChildren via
634: * Lst_Find to find the job descriptor of the finished job.
635: *
636: * Results:
637: * 0 if the pid's match
638: *-----------------------------------------------------------------------
639: */
640: static int
1.56 espie 641: JobCmpPid(void *job, /* job to examine */
642: void *pid) /* process id desired */
1.1 deraadt 643: {
1.51 mpech 644: return *(pid_t *)pid - ((Job *)job)->pid;
1.1 deraadt 645: }
646:
647: /*-
648: *-----------------------------------------------------------------------
649: * JobPrintCommand --
650: * Put out another command for the given job. If the command starts
651: * with an @ or a - we process it specially. In the former case,
652: * so long as the -s and -n flags weren't given to make, we stick
653: * a shell-specific echoOff command in the script. In the latter,
654: * we ignore errors for the entire job, unless the shell has error
655: * control.
656: * If the command is just "..." we take all future commands for this
657: * job to be commands to be executed once the entire graph has been
658: * made and return non-zero to signal that the end of the commands
659: * was reached. These commands are later attached to the postCommands
660: * node and executed by Job_End when all things are done.
1.40 espie 661: * This function is called from JobStart via Lst_Find
1.1 deraadt 662: *
663: * Results:
1.26 espie 664: * Always 1, unless the command was "..."
1.1 deraadt 665: *
666: * Side Effects:
667: * If the command begins with a '-' and the shell has no error control,
668: * the JOB_IGNERR flag is set in the job descriptor.
669: * If the command is "..." and we're not ignoring such things,
670: * tailCmds is set to the successor node of the cmd.
671: * numCommands is incremented if the command is actually printed.
672: *-----------------------------------------------------------------------
673: */
674: static int
1.56 espie 675: JobPrintCommand(void *cmdp, /* command string to print */
676: void *jobp) /* job for which to print it */
1.1 deraadt 677: {
1.41 espie 678: bool noSpecials; /* true if we shouldn't worry about
1.1 deraadt 679: * inserting special commands into
680: * the input stream. */
1.41 espie 681: bool shutUp = false; /* true if we put a no echo command
1.1 deraadt 682: * into the command file */
1.41 espie 683: bool errOff = false; /* true if we turned error checking
1.1 deraadt 684: * off before printing the command
685: * and need to turn it back on */
1.40 espie 686: char *cmdTemplate; /* Template to use when printing the
1.1 deraadt 687: * command */
1.40 espie 688: char *cmdStart; /* Start of expanded command */
689: LstNode cmdNode; /* Node for replacing the command */
690: char *cmd = (char *)cmdp;
691: Job *job = (Job *)jobp;
1.1 deraadt 692:
1.2 deraadt 693: noSpecials = (noExecute && !(job->node->type & OP_MAKE));
1.1 deraadt 694:
1.2 deraadt 695: if (strcmp(cmd, "...") == 0) {
1.6 millert 696: job->node->type |= OP_SAVE_CMDS;
1.1 deraadt 697: if ((job->flags & JOB_IGNDOTS) == 0) {
1.29 espie 698: job->tailCmds = Lst_Succ(Lst_Member(&job->node->commands, cmd));
1.26 espie 699: return 0;
1.2 deraadt 700: }
1.26 espie 701: return 1;
1.1 deraadt 702: }
703:
1.2 deraadt 704: #define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \
1.40 espie 705: (void)fprintf(stdout, fmt, arg); \
706: (void)fflush(stdout); \
1.2 deraadt 707: } \
1.40 espie 708: (void)fprintf(job->cmdFILE, fmt, arg); \
709: (void)fflush(job->cmdFILE);
1.1 deraadt 710:
711: numCommands += 1;
712:
1.40 espie 713: /* For debugging, we replace each command with the result of expanding
714: * the variables in the command. */
1.29 espie 715: cmdNode = Lst_Member(&job->node->commands, cmd);
1.41 espie 716: cmdStart = cmd = Var_Subst(cmd, &job->node->context, false);
1.25 espie 717: Lst_Replace(cmdNode, cmdStart);
1.1 deraadt 718:
719: cmdTemplate = "%s\n";
720:
721: /*
722: * Check for leading @' and -'s to control echoing and error checking.
723: */
1.34 espie 724: for (;; cmd++) {
1.40 espie 725: if (*cmd == '@')
1.41 espie 726: shutUp = DEBUG(LOUD) ? false : true;
1.34 espie 727: else if (*cmd == '-')
1.41 espie 728: errOff = true;
1.34 espie 729: else if (*cmd != '+')
730: break;
1.1 deraadt 731: }
732:
1.40 espie 733: while (isspace(*cmd))
1.1 deraadt 734: cmd++;
735:
736: if (shutUp) {
1.2 deraadt 737: if (!(job->flags & JOB_SILENT) && !noSpecials &&
1.1 deraadt 738: commandShell->hasEchoCtl) {
1.2 deraadt 739: DBPRINTF("%s\n", commandShell->echoOff);
1.1 deraadt 740: } else {
1.41 espie 741: shutUp = false;
1.1 deraadt 742: }
743: }
744:
745: if (errOff) {
1.2 deraadt 746: if ( !(job->flags & JOB_IGNERR) && !noSpecials) {
1.1 deraadt 747: if (commandShell->hasErrCtl) {
748: /*
749: * we don't want the error-control commands showing
750: * up either, so we turn off echoing while executing
751: * them. We could put another field in the shell
752: * structure to tell JobDoOutput to look for this
753: * string too, but why make it any more complex than
754: * it already is?
755: */
1.2 deraadt 756: if (!(job->flags & JOB_SILENT) && !shutUp &&
1.1 deraadt 757: commandShell->hasEchoCtl) {
1.2 deraadt 758: DBPRINTF("%s\n", commandShell->echoOff);
759: DBPRINTF("%s\n", commandShell->ignErr);
760: DBPRINTF("%s\n", commandShell->echoOn);
1.1 deraadt 761: } else {
1.2 deraadt 762: DBPRINTF("%s\n", commandShell->ignErr);
1.1 deraadt 763: }
764: } else if (commandShell->ignErr &&
1.2 deraadt 765: (*commandShell->ignErr != '\0'))
1.1 deraadt 766: {
767: /*
768: * The shell has no error control, so we need to be
769: * weird to get it to ignore any errors from the command.
770: * If echoing is turned on, we turn it off and use the
771: * errCheck template to echo the command. Leave echoing
772: * off so the user doesn't see the weirdness we go through
773: * to ignore errors. Set cmdTemplate to use the weirdness
774: * instead of the simple "%s\n" template.
775: */
1.2 deraadt 776: if (!(job->flags & JOB_SILENT) && !shutUp &&
1.1 deraadt 777: commandShell->hasEchoCtl) {
1.2 deraadt 778: DBPRINTF("%s\n", commandShell->echoOff);
779: DBPRINTF(commandShell->errCheck, cmd);
1.41 espie 780: shutUp = true;
1.1 deraadt 781: }
782: cmdTemplate = commandShell->ignErr;
783: /*
1.6 millert 784: * The error ignoration (hee hee) is already taken care
1.1 deraadt 785: * of by the ignErr template, so pretend error checking
786: * is still on.
787: */
1.41 espie 788: errOff = false;
1.1 deraadt 789: } else {
1.41 espie 790: errOff = false;
1.1 deraadt 791: }
792: } else {
1.41 espie 793: errOff = false;
1.1 deraadt 794: }
795: }
1.6 millert 796:
1.2 deraadt 797: DBPRINTF(cmdTemplate, cmd);
1.6 millert 798:
1.1 deraadt 799: if (errOff) {
800: /*
801: * If echoing is already off, there's no point in issuing the
802: * echoOff command. Otherwise we issue it and pretend it was on
803: * for the whole command...
804: */
805: if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
1.2 deraadt 806: DBPRINTF("%s\n", commandShell->echoOff);
1.41 espie 807: shutUp = true;
1.1 deraadt 808: }
1.2 deraadt 809: DBPRINTF("%s\n", commandShell->errCheck);
1.1 deraadt 810: }
811: if (shutUp) {
1.2 deraadt 812: DBPRINTF("%s\n", commandShell->echoOn);
1.1 deraadt 813: }
1.26 espie 814: return 1;
1.1 deraadt 815: }
816:
817: /*-
818: *-----------------------------------------------------------------------
819: * JobSaveCommand --
820: * Save a command to be executed when everything else is done.
821: * Callback function for JobFinish...
822: *
823: * Side Effects:
824: * The command is tacked onto the end of postCommands's commands list.
825: *-----------------------------------------------------------------------
826: */
1.27 espie 827: static void
1.56 espie 828: JobSaveCommand(void *cmd, void *gn)
1.1 deraadt 829: {
1.40 espie 830: GNode *g = (GNode *)gn;
831: char *result;
1.28 espie 832:
1.41 espie 833: result = Var_Subst((char *)cmd, &g->context, false);
1.29 espie 834: Lst_AtEnd(&postCommands->commands, result);
1.2 deraadt 835: }
836:
837:
838: /*-
839: *-----------------------------------------------------------------------
840: * JobClose --
841: * Called to close both input and output pipes when a job is finished.
842: *
843: * Side Effects:
844: * The file descriptors associated with the job are closed.
845: *-----------------------------------------------------------------------
846: */
847: static void
1.56 espie 848: JobClose(Job *job)
1.2 deraadt 849: {
850: if (usePipes) {
1.8 deraadt 851: FD_CLR(job->inPipe, outputsp);
1.2 deraadt 852: if (job->outPipe != job->inPipe) {
1.40 espie 853: (void)close(job->outPipe);
1.2 deraadt 854: }
1.41 espie 855: JobDoOutput(job, true);
1.40 espie 856: (void)close(job->inPipe);
1.2 deraadt 857: } else {
1.40 espie 858: (void)close(job->outFd);
1.41 espie 859: JobDoOutput(job, true);
1.2 deraadt 860: }
1.1 deraadt 861: }
862:
863: /*-
864: *-----------------------------------------------------------------------
865: * JobFinish --
866: * Do final processing for the given job including updating
867: * parents and starting new jobs as available/necessary. Note
868: * that we pay no attention to the JOB_IGNERR flag here.
869: * This is because when we're called because of a noexecute flag
870: * or something, jstat.w_status is 0 and when called from
871: * Job_CatchChildren, the status is zeroed if it s/b ignored.
872: *
873: * Side Effects:
874: * Some nodes may be put on the toBeMade queue.
875: * Final commands for the job are placed on postCommands.
876: *
1.6 millert 877: * If we got an error and are aborting (aborting == ABORT_ERROR) and
1.1 deraadt 878: * the job list is now empty, we are done for the day.
1.6 millert 879: * If we recognized an error (errors !=0), we set the aborting flag
1.1 deraadt 880: * to ABORT_ERROR so no more jobs will be started.
881: *-----------------------------------------------------------------------
882: */
883: /*ARGSUSED*/
884: static void
1.56 espie 885: JobFinish(Job *job, /* job to finish */
886: int *status) /* sub-why job went away */
1.2 deraadt 887: {
1.41 espie 888: bool done;
1.2 deraadt 889:
890: if ((WIFEXITED(*status) &&
1.40 espie 891: WEXITSTATUS(*status) != 0 && !(job->flags & JOB_IGNERR)) ||
892: (WIFSIGNALED(*status) && WTERMSIG(*status) != SIGCONT))
1.1 deraadt 893: {
894: /*
895: * If it exited non-zero and either we're doing things our
896: * way or we're not ignoring errors, the job is finished.
897: * Similarly, if the shell died because of a signal
898: * the job is also finished. In these
899: * cases, finish out the job's output before printing the exit
900: * status...
901: */
1.2 deraadt 902: JobClose(job);
1.1 deraadt 903: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1.40 espie 904: (void)fclose(job->cmdFILE);
1.1 deraadt 905: }
1.41 espie 906: done = true;
1.2 deraadt 907: } else if (WIFEXITED(*status)) {
1.1 deraadt 908: /*
909: * Deal with ignored errors in -B mode. We need to print a message
910: * telling of the ignored error as well as setting status.w_status
911: * to 0 so the next command gets run. To do this, we set done to be
1.41 espie 912: * true if in -B mode and the job exited non-zero.
1.2 deraadt 913: */
914: done = WEXITSTATUS(*status) != 0;
1.6 millert 915: /*
1.2 deraadt 916: * Old comment said: "Note we don't
1.1 deraadt 917: * want to close down any of the streams until we know we're at the
1.2 deraadt 918: * end."
919: * But we do. Otherwise when are we going to print the rest of the
920: * stuff?
921: */
922: JobClose(job);
1.1 deraadt 923: } else {
924: /*
925: * No need to close things down or anything.
926: */
1.41 espie 927: done = false;
1.1 deraadt 928: }
1.6 millert 929:
1.1 deraadt 930: if (done ||
1.2 deraadt 931: WIFSTOPPED(*status) ||
1.40 espie 932: (WIFSIGNALED(*status) && WTERMSIG(*status) == SIGCONT) ||
1.1 deraadt 933: DEBUG(JOB))
934: {
935: FILE *out;
1.6 millert 936:
1.2 deraadt 937: if (compatMake && !usePipes && (job->flags & JOB_IGNERR)) {
1.1 deraadt 938: /*
939: * If output is going to a file and this job is ignoring
940: * errors, arrange to have the exit status sent to the
941: * output file as well.
942: */
1.2 deraadt 943: out = fdopen(job->outFd, "w");
1.1 deraadt 944: } else {
945: out = stdout;
946: }
947:
1.2 deraadt 948: if (WIFEXITED(*status)) {
949: if (DEBUG(JOB)) {
1.51 mpech 950: (void)fprintf(stdout, "Process %ld exited.\n", (long)job->pid);
1.40 espie 951: (void)fflush(stdout);
1.2 deraadt 952: }
953: if (WEXITSTATUS(*status) != 0) {
1.1 deraadt 954: if (usePipes && job->node != lastNode) {
1.2 deraadt 955: MESSAGE(out, job->node);
1.1 deraadt 956: lastNode = job->node;
957: }
1.40 espie 958: (void)fprintf(out, "*** Error code %d%s\n",
1.2 deraadt 959: WEXITSTATUS(*status),
960: (job->flags & JOB_IGNERR) ? "(ignored)" : "");
1.1 deraadt 961:
962: if (job->flags & JOB_IGNERR) {
1.2 deraadt 963: *status = 0;
1.1 deraadt 964: }
965: } else if (DEBUG(JOB)) {
966: if (usePipes && job->node != lastNode) {
1.2 deraadt 967: MESSAGE(out, job->node);
1.1 deraadt 968: lastNode = job->node;
969: }
1.40 espie 970: (void)fprintf(out, "*** Completed successfully\n");
1.2 deraadt 971: }
972: } else if (WIFSTOPPED(*status)) {
973: if (DEBUG(JOB)) {
1.51 mpech 974: (void)fprintf(stdout, "Process %ld stopped.\n", (long)job->pid);
1.40 espie 975: (void)fflush(stdout);
1.1 deraadt 976: }
977: if (usePipes && job->node != lastNode) {
1.2 deraadt 978: MESSAGE(out, job->node);
1.1 deraadt 979: lastNode = job->node;
980: }
1.49 espie 981: (void)fprintf(out, "*** Stopped -- signal %d\n",
982: WSTOPSIG(*status));
1.1 deraadt 983: job->flags |= JOB_RESUME;
1.29 espie 984: Lst_AtEnd(&stoppedJobs, job);
1.40 espie 985: (void)fflush(out);
1.1 deraadt 986: return;
1.2 deraadt 987: } else if (WTERMSIG(*status) == SIGCONT) {
1.1 deraadt 988: /*
989: * If the beastie has continued, shift the Job from the stopped
1.6 millert 990: * list to the running one (or re-stop it if concurrency is
1.1 deraadt 991: * exceeded) and go and get another child.
992: */
1.49 espie 993: if (job->flags & (JOB_RESUME|JOB_RESTART)) {
1.1 deraadt 994: if (usePipes && job->node != lastNode) {
1.2 deraadt 995: MESSAGE(out, job->node);
1.1 deraadt 996: lastNode = job->node;
997: }
1.40 espie 998: (void)fprintf(out, "*** Continued\n");
1.1 deraadt 999: }
1.2 deraadt 1000: if (!(job->flags & JOB_CONTINUING)) {
1001: if (DEBUG(JOB)) {
1.40 espie 1002: (void)fprintf(stdout,
1.51 mpech 1003: "Warning: process %ld was not continuing.\n",
1004: (long)job->pid);
1.40 espie 1005: (void)fflush(stdout);
1.2 deraadt 1006: }
1007: #ifdef notdef
1008: /*
1009: * We don't really want to restart a job from scratch just
1010: * because it continued, especially not without killing the
1.40 espie 1011: * continuing process! That's why this is ifdef'ed out.
1.2 deraadt 1012: * FD - 9/17/90
1013: */
1.1 deraadt 1014: JobRestart(job);
1.2 deraadt 1015: #endif
1016: }
1017: job->flags &= ~JOB_CONTINUING;
1.40 espie 1018: Lst_AtEnd(&jobs, job);
1.2 deraadt 1019: nJobs += 1;
1.48 espie 1020: if (DEBUG(JOB)) {
1021: (void)fprintf(stdout,
1.51 mpech 1022: "Process %ld is continuing locally.\n",
1023: (long)job->pid);
1.48 espie 1024: (void)fflush(stdout);
1.1 deraadt 1025: }
1.48 espie 1026: nLocal += 1;
1.2 deraadt 1027: if (nJobs == maxJobs) {
1.41 espie 1028: jobFull = true;
1.2 deraadt 1029: if (DEBUG(JOB)) {
1.40 espie 1030: (void)fprintf(stdout, "Job queue is full.\n");
1031: (void)fflush(stdout);
1032: }
1033: }
1034: (void)fflush(out);
1035: return;
1.1 deraadt 1036: } else {
1037: if (usePipes && job->node != lastNode) {
1.2 deraadt 1038: MESSAGE(out, job->node);
1.1 deraadt 1039: lastNode = job->node;
1040: }
1.40 espie 1041: (void)fprintf(out, "*** Signal %d\n", WTERMSIG(*status));
1.1 deraadt 1042: }
1043:
1.40 espie 1044: (void)fflush(out);
1.1 deraadt 1045: }
1046:
1047: /*
1048: * Now handle the -B-mode stuff. If the beast still isn't finished,
1049: * try and restart the job on the next command. If JobStart says it's
1050: * ok, it's ok. If there's an error, this puppy is done.
1051: */
1.40 espie 1052: if (compatMake && WIFEXITED(*status) && job->node->current != NULL) {
1.2 deraadt 1053: switch (JobStart(job->node, job->flags & JOB_IGNDOTS, job)) {
1054: case JOB_RUNNING:
1.41 espie 1055: done = false;
1.2 deraadt 1056: break;
1057: case JOB_ERROR:
1.41 espie 1058: done = true;
1.2 deraadt 1059: W_SETEXITSTATUS(status, 1);
1060: break;
1061: case JOB_FINISHED:
1062: /*
1063: * If we got back a JOB_FINISHED code, JobStart has already
1064: * called Make_Update and freed the job descriptor. We set
1065: * done to false here to avoid fake cycles and double frees.
1066: * JobStart needs to do the update so we can proceed up the
1067: * graph when given the -n flag..
1068: */
1.41 espie 1069: done = false;
1.2 deraadt 1070: break;
1.1 deraadt 1071: }
1.40 espie 1072: } else
1.41 espie 1073: done = true;
1.1 deraadt 1074:
1075: if (done &&
1.40 espie 1076: aborting != ABORT_ERROR &&
1077: aborting != ABORT_INTERRUPT &&
1078: *status == 0) {
1079: /* As long as we aren't aborting and the job didn't return a non-zero
1.1 deraadt 1080: * status that we shouldn't ignore, we call Make_Update to update
1081: * the parents. In addition, any saved commands for the node are placed
1.40 espie 1082: * on the .END target. */
1.27 espie 1083: Lst_ForEachFrom(job->tailCmds, JobSaveCommand, job->node);
1.1 deraadt 1084: job->node->made = MADE;
1.2 deraadt 1085: Make_Update(job->node);
1.28 espie 1086: free(job);
1.5 briggs 1087: } else if (*status != 0) {
1.1 deraadt 1088: errors += 1;
1.28 espie 1089: free(job);
1.1 deraadt 1090: }
1091:
1.2 deraadt 1092: JobRestartJobs();
1.1 deraadt 1093:
1094: /*
1095: * Set aborting if any error.
1096: */
1.40 espie 1097: if (errors && !keepgoing && aborting != ABORT_INTERRUPT) {
1.1 deraadt 1098: /*
1099: * If we found any errors in this batch of children and the -k flag
1100: * wasn't given, we set the aborting flag so no more jobs get
1101: * started.
1102: */
1103: aborting = ABORT_ERROR;
1104: }
1.6 millert 1105:
1.40 espie 1106: if (aborting == ABORT_ERROR && Job_Empty()) {
1.1 deraadt 1107: /*
1108: * If we are aborting and the job table is now empty, we finish.
1109: */
1.40 espie 1110: (void)eunlink(tfile);
1.2 deraadt 1111: Finish(errors);
1.40 espie 1112: }
1.1 deraadt 1113: }
1114:
1115: /*-
1116: *-----------------------------------------------------------------------
1117: * Job_Touch --
1118: * Touch the given target. Called by JobStart when the -t flag was
1119: * given
1120: *
1121: * Side Effects:
1122: * The data modification of the file is changed. In addition, if the
1123: * file did not exist, it is created.
1124: *-----------------------------------------------------------------------
1125: */
1126: void
1.56 espie 1127: Job_Touch(GNode *gn, /* the node of the file to touch */
1128: bool silent) /* true if should not print messages */
1.1 deraadt 1129: {
1.40 espie 1130: int streamID; /* ID of stream opened to do the touch */
1.1 deraadt 1131:
1132: if (gn->type & (OP_JOIN|OP_USE|OP_EXEC|OP_OPTIONAL)) {
1133: /*
1134: * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
1135: * and, as such, shouldn't really be created.
1136: */
1137: return;
1138: }
1.6 millert 1139:
1.1 deraadt 1140: if (!silent) {
1.40 espie 1141: (void)fprintf(stdout, "touch %s\n", gn->name);
1142: (void)fflush(stdout);
1.1 deraadt 1143: }
1144:
1145: if (noExecute) {
1146: return;
1147: }
1148:
1149: if (gn->type & OP_ARCHV) {
1.2 deraadt 1150: Arch_Touch(gn);
1.1 deraadt 1151: } else if (gn->type & OP_LIB) {
1.2 deraadt 1152: Arch_TouchLib(gn);
1.1 deraadt 1153: } else {
1.40 espie 1154: const char *file = gn->path != NULL ? gn->path : gn->name;
1.1 deraadt 1155:
1.40 espie 1156: if (set_times(file) == -1){
1.2 deraadt 1157: streamID = open(file, O_RDWR | O_CREAT, 0666);
1.1 deraadt 1158:
1159: if (streamID >= 0) {
1160: char c;
1161:
1162: /*
1163: * Read and write a byte to the file to change the
1164: * modification time, then close the file.
1165: */
1166: if (read(streamID, &c, 1) == 1) {
1.40 espie 1167: (void)lseek(streamID, 0, SEEK_SET);
1168: (void)write(streamID, &c, 1);
1.1 deraadt 1169: }
1.6 millert 1170:
1.40 espie 1171: (void)close(streamID);
1.2 deraadt 1172: } else {
1.40 espie 1173: (void)fprintf(stdout, "*** couldn't touch %s: %s",
1.2 deraadt 1174: file, strerror(errno));
1.40 espie 1175: (void)fflush(stdout);
1.2 deraadt 1176: }
1.1 deraadt 1177: }
1178: }
1179: }
1180:
1181: /*-
1182: *-----------------------------------------------------------------------
1183: * Job_CheckCommands --
1.6 millert 1184: * Make sure the given node has all the commands it needs.
1.1 deraadt 1185: *
1186: * Results:
1.41 espie 1187: * true if the commands list is/was ok.
1.1 deraadt 1188: *
1189: * Side Effects:
1190: * The node will have commands from the .DEFAULT rule added to it
1191: * if it needs them.
1192: *-----------------------------------------------------------------------
1193: */
1.41 espie 1194: bool
1.56 espie 1195: Job_CheckCommands(GNode *gn, /* The target whose commands need
1196: * verifying */
1197: void (*abortProc)(char *, ...)) /* Function to abort with message */
1.1 deraadt 1198: {
1.29 espie 1199: if (OP_NOP(gn->type) && Lst_IsEmpty(&gn->commands) &&
1.1 deraadt 1200: (gn->type & OP_LIB) == 0) {
1201: /*
1202: * No commands. Look for .DEFAULT rule from which we might infer
1.6 millert 1203: * commands
1.1 deraadt 1204: */
1.40 espie 1205: if (DEFAULT != NULL && !Lst_IsEmpty(&DEFAULT->commands)) {
1.1 deraadt 1206: /*
1207: * Make only looks for a .DEFAULT if the node was never the
1208: * target of an operator, so that's what we do too. If
1209: * a .DEFAULT was given, we substitute its commands for gn's
1210: * commands and set the IMPSRC variable to be the target's name
1211: * The DEFAULT node acts like a transformation rule, in that
1212: * gn also inherits any attributes or sources attached to
1213: * .DEFAULT itself.
1214: */
1215: Make_HandleUse(DEFAULT, gn);
1.31 espie 1216: Varq_Set(IMPSRC_INDEX, Varq_Value(TARGET_INDEX, gn), gn);
1.37 espie 1217: } else if (is_out_of_date(Dir_MTime(gn))) {
1.1 deraadt 1218: /*
1219: * The node wasn't the target of an operator we have no .DEFAULT
1220: * rule to go on and the target doesn't already exist. There's
1221: * nothing more we can do for this branch. If the -k flag wasn't
1222: * given, we stop in our tracks, otherwise we just don't update
1.6 millert 1223: * this node's parents so they never get examined.
1.1 deraadt 1224: */
1.2 deraadt 1225: static const char msg[] = "make: don't know how to make";
1226:
1.1 deraadt 1227: if (gn->type & OP_OPTIONAL) {
1.40 espie 1228: (void)fprintf(stdout, "%s %s(ignored)\n", msg, gn->name);
1229: (void)fflush(stdout);
1.1 deraadt 1230: } else if (keepgoing) {
1.40 espie 1231: (void)fprintf(stdout, "%s %s(continuing)\n", msg, gn->name);
1232: (void)fflush(stdout);
1.41 espie 1233: return false;
1.1 deraadt 1234: } else {
1.39 espie 1235: (*abortProc)("%s %s. Stop in %s.", msg, gn->name,
1.40 espie 1236: Var_Value(".CURDIR"));
1.41 espie 1237: return false;
1.1 deraadt 1238: }
1239: }
1240: }
1.41 espie 1241: return true;
1.1 deraadt 1242: }
1243:
1244: /*-
1245: *-----------------------------------------------------------------------
1246: * JobExec --
1247: * Execute the shell for the given job. Called from JobStart and
1248: * JobRestart.
1249: *
1250: * Side Effects:
1251: * A shell is executed, outputs is altered and the Job structure added
1252: * to the job table.
1253: *-----------------------------------------------------------------------
1254: */
1255: static void
1.56 espie 1256: JobExec(Job *job, char **argv)
1.1 deraadt 1257: {
1.51 mpech 1258: pid_t cpid; /* ID of new child */
1.6 millert 1259:
1.1 deraadt 1260: if (DEBUG(JOB)) {
1.40 espie 1261: int i;
1.6 millert 1262:
1.48 espie 1263: (void)fprintf(stdout, "Running %s\n", job->node->name);
1.40 espie 1264: (void)fprintf(stdout, "\tCommand: ");
1.2 deraadt 1265: for (i = 0; argv[i] != NULL; i++) {
1.40 espie 1266: (void)fprintf(stdout, "%s ", argv[i]);
1.1 deraadt 1267: }
1.40 espie 1268: (void)fprintf(stdout, "\n");
1269: (void)fflush(stdout);
1.1 deraadt 1270: }
1.6 millert 1271:
1.1 deraadt 1272: /*
1273: * Some jobs produce no output and it's disconcerting to have
1.6 millert 1274: * no feedback of their running (since they produce no output, the
1.1 deraadt 1275: * banner with their name in it never appears). This is an attempt to
1276: * provide that feedback, even if nothing follows it.
1277: */
1.40 espie 1278: if (lastNode != job->node && (job->flags & JOB_FIRST) &&
1.2 deraadt 1279: !(job->flags & JOB_SILENT)) {
1280: MESSAGE(stdout, job->node);
1.1 deraadt 1281: lastNode = job->node;
1282: }
1.6 millert 1283:
1.52 mickey 1284: if ((cpid = fork()) == -1) {
1.2 deraadt 1285: Punt("Cannot fork");
1.1 deraadt 1286: } else if (cpid == 0) {
1287:
1288: /*
1289: * Must duplicate the input stream down to the child's input and
1.6 millert 1290: * reset it to the beginning (again). Since the stream was marked
1.1 deraadt 1291: * close-on-exec, we must clear that bit in the new input.
1292: */
1.2 deraadt 1293: if (dup2(FILENO(job->cmdFILE), 0) == -1)
1294: Punt("Cannot dup2: %s", strerror(errno));
1.40 espie 1295: (void)fcntl(0, F_SETFD, 0);
1296: (void)lseek(0, 0, SEEK_SET);
1.6 millert 1297:
1.1 deraadt 1298: if (usePipes) {
1299: /*
1300: * Set up the child's output to be routed through the pipe
1301: * we've created for it.
1302: */
1.2 deraadt 1303: if (dup2(job->outPipe, 1) == -1)
1304: Punt("Cannot dup2: %s", strerror(errno));
1.1 deraadt 1305: } else {
1306: /*
1307: * We're capturing output in a file, so we duplicate the
1308: * descriptor to the temporary file into the standard
1309: * output.
1310: */
1.2 deraadt 1311: if (dup2(job->outFd, 1) == -1)
1312: Punt("Cannot dup2: %s", strerror(errno));
1.1 deraadt 1313: }
1314: /*
1315: * The output channels are marked close on exec. This bit was
1.6 millert 1316: * duplicated by the dup2 (on some systems), so we have to clear
1.1 deraadt 1317: * it before routing the shell's error output to the same place as
1318: * its standard output.
1319: */
1.40 espie 1320: (void)fcntl(1, F_SETFD, 0);
1.2 deraadt 1321: if (dup2(1, 2) == -1)
1322: Punt("Cannot dup2: %s", strerror(errno));
1.1 deraadt 1323:
1324: #ifdef USE_PGRP
1325: /*
1326: * We want to switch the child into a different process family so
1327: * we can kill it and all its descendants in one fell swoop,
1328: * by killing its process family, but not commit suicide.
1329: */
1.2 deraadt 1330: # if defined(SYSV)
1.40 espie 1331: (void)setsid();
1.2 deraadt 1332: # else
1.40 espie 1333: (void)setpgid(0, getpid());
1.2 deraadt 1334: # endif
1335: #endif /* USE_PGRP */
1.1 deraadt 1336:
1.40 espie 1337: (void)execv(shellPath, argv);
1.2 deraadt 1338:
1.59 ! deraadt 1339: (void)write(STDERR_FILENO, "Could not execute shell\n",
1.2 deraadt 1340: sizeof("Could not execute shell"));
1341: _exit(1);
1.1 deraadt 1342: } else {
1343: job->pid = cpid;
1344:
1345: if (usePipes && (job->flags & JOB_FIRST) ) {
1346: /*
1347: * The first time a job is run for a node, we set the current
1348: * position in the buffer to the beginning and mark another
1349: * stream to watch in the outputs mask
1350: */
1351: job->curPos = 0;
1.6 millert 1352:
1.8 deraadt 1353: if (outputsp == NULL || job->inPipe > outputsn) {
1354: int bytes = howmany(job->inPipe+1, NFDBITS) * sizeof(fd_mask);
1355: int obytes = howmany(outputsn+1, NFDBITS) * sizeof(fd_mask);
1356:
1.9 flipk 1357: if (outputsp == NULL || obytes != bytes) {
1.8 deraadt 1358: outputsp = realloc(outputsp, bytes);
1359: if (outputsp == NULL)
1360: return;
1361: memset(outputsp + obytes, 0, bytes - obytes);
1362: }
1363: outputsn = job->inPipe;
1364: }
1365: FD_SET(job->inPipe, outputsp);
1.1 deraadt 1366: }
1367:
1.48 espie 1368: nLocal += 1;
1369: /*
1370: * XXX: Used to not happen if REMOTE. Why?
1371: */
1372: if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
1373: (void)fclose(job->cmdFILE);
1374: job->cmdFILE = NULL;
1.1 deraadt 1375: }
1376: }
1377:
1378: /*
1379: * Now the job is actually running, add it to the table.
1380: */
1381: nJobs += 1;
1.29 espie 1382: Lst_AtEnd(&jobs, job);
1.1 deraadt 1383: if (nJobs == maxJobs) {
1.41 espie 1384: jobFull = true;
1.1 deraadt 1385: }
1386: }
1387:
1388: /*-
1389: *-----------------------------------------------------------------------
1390: * JobMakeArgv --
1391: * Create the argv needed to execute the shell for a given job.
1392: *-----------------------------------------------------------------------
1393: */
1394: static void
1.56 espie 1395: JobMakeArgv(Job *job, char **argv)
1.1 deraadt 1396: {
1.40 espie 1397: int argc;
1398: static char args[10]; /* For merged arguments */
1.6 millert 1399:
1.1 deraadt 1400: argv[0] = shellName;
1401: argc = 1;
1402:
1.40 espie 1403: if ((commandShell->exit && *commandShell->exit != '-') ||
1404: (commandShell->echo && *commandShell->echo != '-'))
1.1 deraadt 1405: {
1406: /*
1407: * At least one of the flags doesn't have a minus before it, so
1408: * merge them together. Have to do this because the *(&(@*#*&#$#
1409: * Bourne shell thinks its second argument is a file to source.
1410: * Grrrr. Note the ten-character limitation on the combined arguments.
1411: */
1.54 espie 1412: (void)snprintf(args, sizeof(args), "-%s%s",
1.1 deraadt 1413: ((job->flags & JOB_IGNERR) ? "" :
1414: (commandShell->exit ? commandShell->exit : "")),
1415: ((job->flags & JOB_SILENT) ? "" :
1416: (commandShell->echo ? commandShell->echo : "")));
1417:
1418: if (args[1]) {
1419: argv[argc] = args;
1420: argc++;
1421: }
1422: } else {
1423: if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
1424: argv[argc] = commandShell->exit;
1425: argc++;
1426: }
1427: if (!(job->flags & JOB_SILENT) && commandShell->echo) {
1428: argv[argc] = commandShell->echo;
1429: argc++;
1430: }
1431: }
1.2 deraadt 1432: argv[argc] = NULL;
1.1 deraadt 1433: }
1434:
1435: /*-
1436: *-----------------------------------------------------------------------
1437: * JobRestart --
1.6 millert 1438: * Restart a job that stopped for some reason.
1.1 deraadt 1439: *
1440: * Side Effects:
1441: * jobFull will be set if the job couldn't be run.
1442: *-----------------------------------------------------------------------
1443: */
1444: static void
1.56 espie 1445: JobRestart(Job *job)
1.1 deraadt 1446: {
1.49 espie 1447: if (job->flags & JOB_RESTART) {
1.1 deraadt 1448: /*
1449: * Set up the control arguments to the shell. This is based on the
1450: * flags set earlier for this job. If the JOB_IGNERR flag is clear,
1451: * the 'exit' flag of the commandShell is used to cause it to exit
1452: * upon receiving an error. If the JOB_SILENT flag is clear, the
1453: * 'echo' flag of the commandShell is used to get it to start echoing
1.6 millert 1454: * as soon as it starts processing commands.
1.1 deraadt 1455: */
1456: char *argv[4];
1.6 millert 1457:
1.1 deraadt 1458: JobMakeArgv(job, argv);
1.2 deraadt 1459:
1.1 deraadt 1460: if (DEBUG(JOB)) {
1.40 espie 1461: (void)fprintf(stdout, "Restarting %s...", job->node->name);
1462: (void)fflush(stdout);
1.1 deraadt 1463: }
1.2 deraadt 1464: {
1.40 espie 1465: if (nLocal >= maxLocal && !(job->flags & JOB_SPECIAL)) {
1.1 deraadt 1466: /*
1467: * Can't be exported and not allowed to run locally -- put it
1468: * back on the hold queue and mark the table full
1469: */
1470: if (DEBUG(JOB)) {
1.40 espie 1471: (void)fprintf(stdout, "holding\n");
1472: (void)fflush(stdout);
1.1 deraadt 1473: }
1.29 espie 1474: Lst_AtFront(&stoppedJobs, job);
1.41 espie 1475: jobFull = true;
1.1 deraadt 1476: if (DEBUG(JOB)) {
1.40 espie 1477: (void)fprintf(stdout, "Job queue is full.\n");
1478: (void)fflush(stdout);
1.1 deraadt 1479: }
1480: return;
1.2 deraadt 1481: } else {
1.1 deraadt 1482: /*
1483: * Job may be run locally.
1484: */
1485: if (DEBUG(JOB)) {
1.40 espie 1486: (void)fprintf(stdout, "running locally\n");
1487: (void)fflush(stdout);
1.1 deraadt 1488: }
1.2 deraadt 1489: }
1.1 deraadt 1490: }
1491: JobExec(job, argv);
1492: } else {
1493: /*
1494: * The job has stopped and needs to be restarted. Why it stopped,
1495: * we don't know...
1496: */
1497: if (DEBUG(JOB)) {
1.40 espie 1498: (void)fprintf(stdout, "Resuming %s...", job->node->name);
1499: (void)fflush(stdout);
1.1 deraadt 1500: }
1.48 espie 1501: if ((nLocal < maxLocal ||
1.40 espie 1502: ((job->flags & JOB_SPECIAL) &&
1503: maxLocal == 0)
1504: ) && nJobs != maxJobs)
1.1 deraadt 1505: {
1506: /*
1.50 espie 1507: * If we haven't reached the concurrency limit already (or
1508: * maxLocal is 0), it's ok to resume the job.
1.1 deraadt 1509: */
1.41 espie 1510: bool error;
1.2 deraadt 1511: int status;
1.6 millert 1512:
1.40 espie 1513: error = KILL(job->pid, SIGCONT) != 0;
1.1 deraadt 1514:
1515: if (!error) {
1516: /*
1517: * Make sure the user knows we've continued the beast and
1518: * actually put the thing in the job table.
1519: */
1520: job->flags |= JOB_CONTINUING;
1.2 deraadt 1521: W_SETTERMSIG(&status, SIGCONT);
1522: JobFinish(job, &status);
1.6 millert 1523:
1.1 deraadt 1524: job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
1525: if (DEBUG(JOB)) {
1.40 espie 1526: (void)fprintf(stdout, "done\n");
1527: (void)fflush(stdout);
1.1 deraadt 1528: }
1529: } else {
1530: Error("couldn't resume %s: %s",
1531: job->node->name, strerror(errno));
1.2 deraadt 1532: status = 0;
1533: W_SETEXITSTATUS(&status, 1);
1534: JobFinish(job, &status);
1.1 deraadt 1535: }
1536: } else {
1537: /*
1538: * Job cannot be restarted. Mark the table as full and
1539: * place the job back on the list of stopped jobs.
1540: */
1541: if (DEBUG(JOB)) {
1.40 espie 1542: (void)fprintf(stdout, "table full\n");
1543: (void)fflush(stdout);
1.1 deraadt 1544: }
1.29 espie 1545: Lst_AtFront(&stoppedJobs, job);
1.41 espie 1546: jobFull = true;
1.1 deraadt 1547: if (DEBUG(JOB)) {
1.40 espie 1548: (void)fprintf(stdout, "Job queue is full.\n");
1549: (void)fflush(stdout);
1.1 deraadt 1550: }
1551: }
1552: }
1553: }
1554:
1555: /*-
1556: *-----------------------------------------------------------------------
1557: * JobStart --
1558: * Start a target-creation process going for the target described
1.6 millert 1559: * by the graph node gn.
1.1 deraadt 1560: *
1561: * Results:
1562: * JOB_ERROR if there was an error in the commands, JOB_FINISHED
1563: * if there isn't actually anything left to do for the job and
1564: * JOB_RUNNING if the job has been started.
1565: *
1566: * Side Effects:
1567: * A new Job node is created and added to the list of running
1568: * jobs. PMake is forked and a child shell created.
1569: *-----------------------------------------------------------------------
1570: */
1571: static int
1.56 espie 1572: JobStart(GNode *gn, /* target to create */
1573: int flags, /* flags for the job to override normal ones.
1.1 deraadt 1574: * e.g. JOB_SPECIAL or JOB_IGNDOTS */
1.56 espie 1575: Job *previous) /* The previous Job structure for this node,
1.1 deraadt 1576: * if any. */
1577: {
1.40 espie 1578: Job *job; /* new job descriptor */
1.1 deraadt 1579: char *argv[4]; /* Argument vector to shell */
1.41 espie 1580: bool cmdsOK; /* true if the nodes commands were all right */
1581: bool local; /* Set true if the job was run locally */
1582: bool noExec; /* Set true if we decide not to run the job */
1.1 deraadt 1583:
1.2 deraadt 1584: if (previous != NULL) {
1.48 espie 1585: previous->flags &= ~(JOB_FIRST|JOB_IGNERR|JOB_SILENT);
1.1 deraadt 1586: job = previous;
1587: } else {
1.40 espie 1588: job = emalloc(sizeof(Job));
1.2 deraadt 1589: if (job == NULL) {
1.1 deraadt 1590: Punt("JobStart out of memory");
1591: }
1592: flags |= JOB_FIRST;
1593: }
1594:
1595: job->node = gn;
1.18 espie 1596: job->tailCmds = NULL;
1.1 deraadt 1597:
1598: /*
1599: * Set the initial value of the flags for this job based on the global
1600: * ones and the node's attributes... Any flags supplied by the caller
1601: * are also added to the field.
1602: */
1603: job->flags = 0;
1.2 deraadt 1604: if (Targ_Ignore(gn)) {
1.1 deraadt 1605: job->flags |= JOB_IGNERR;
1606: }
1.2 deraadt 1607: if (Targ_Silent(gn)) {
1.1 deraadt 1608: job->flags |= JOB_SILENT;
1609: }
1610: job->flags |= flags;
1611:
1612: /*
1613: * Check the commands now so any attributes from .DEFAULT have a chance
1614: * to migrate to the node
1615: */
1.2 deraadt 1616: if (!compatMake && job->flags & JOB_FIRST) {
1.1 deraadt 1617: cmdsOK = Job_CheckCommands(gn, Error);
1618: } else {
1.41 espie 1619: cmdsOK = true;
1.1 deraadt 1620: }
1.6 millert 1621:
1.1 deraadt 1622: /*
1.6 millert 1623: * If the -n flag wasn't given, we open up OUR (not the child's)
1.1 deraadt 1624: * temporary file to stuff commands in it. The thing is rd/wr so we don't
1625: * need to reopen it to feed it to the shell. If the -n flag *was* given,
1626: * we just set the file to be stdout. Cute, huh?
1627: */
1628: if ((gn->type & OP_MAKE) || (!noExecute && !touchFlag)) {
1629: /*
1630: * We're serious here, but if the commands were bogus, we're
1631: * also dead...
1632: */
1633: if (!cmdsOK) {
1634: DieHorribly();
1635: }
1.6 millert 1636:
1.40 espie 1637: job->cmdFILE = fopen(tfile, "w+");
1.2 deraadt 1638: if (job->cmdFILE == NULL) {
1639: Punt("Could not open %s", tfile);
1.1 deraadt 1640: }
1.40 espie 1641: (void)fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
1.1 deraadt 1642: /*
1643: * Send the commands to the command file, flush all its buffers then
1644: * rewind and remove the thing.
1645: */
1.41 espie 1646: noExec = false;
1.1 deraadt 1647:
1648: /*
1649: * used to be backwards; replace when start doing multiple commands
1650: * per shell.
1651: */
1652: if (compatMake) {
1653: /*
1654: * Be compatible: If this is the first time for this node,
1655: * verify its commands are ok and open the commands list for
1656: * sequential access by later invocations of JobStart.
1657: * Once that is done, we take the next command off the list
1658: * and print it to the command file. If the command was an
1659: * ellipsis, note that there's nothing more to execute.
1660: */
1.30 espie 1661: if ((job->flags&JOB_FIRST))
1.40 espie 1662: gn->current = Lst_First(&gn->commands);
1663: else
1664: gn->current = Lst_Succ(gn->current);
1.6 millert 1665:
1.40 espie 1666: if (gn->current == NULL ||
1667: !JobPrintCommand(Lst_Datum(gn->current), job)) {
1.41 espie 1668: noExec = true;
1.40 espie 1669: gn->current = NULL;
1.30 espie 1670: }
1671: if (noExec && !(job->flags & JOB_FIRST)) {
1672: /*
1673: * If we're not going to execute anything, the job
1674: * is done and we need to close down the various
1675: * file descriptors we've opened for output, then
1676: * call JobDoOutput to catch the final characters or
1677: * send the file to the screen... Note that the i/o streams
1678: * are only open if this isn't the first job.
1679: * Note also that this could not be done in
1680: * Job_CatchChildren b/c it wasn't clear if there were
1681: * more commands to execute or not...
1682: */
1683: JobClose(job);
1.1 deraadt 1684: }
1685: } else {
1686: /*
1687: * We can do all the commands at once. hooray for sanity
1688: */
1689: numCommands = 0;
1.29 espie 1690: Lst_Find(&gn->commands, JobPrintCommand, job);
1.6 millert 1691:
1.1 deraadt 1692: /*
1693: * If we didn't print out any commands to the shell script,
1694: * there's not much point in executing the shell, is there?
1695: */
1696: if (numCommands == 0) {
1.41 espie 1697: noExec = true;
1.1 deraadt 1698: }
1699: }
1700: } else if (noExecute) {
1701: /*
1702: * Not executing anything -- just print all the commands to stdout
1703: * in one fell swoop. This will still set up job->tailCmds correctly.
1704: */
1705: if (lastNode != gn) {
1.2 deraadt 1706: MESSAGE(stdout, gn);
1.1 deraadt 1707: lastNode = gn;
1708: }
1709: job->cmdFILE = stdout;
1710: /*
1711: * Only print the commands if they're ok, but don't die if they're
1712: * not -- just let the user know they're bad and keep going. It
1713: * doesn't do any harm in this case and may do some good.
1714: */
1.40 espie 1715: if (cmdsOK) {
1.29 espie 1716: Lst_Find(&gn->commands, JobPrintCommand, job);
1.40 espie 1717: }
1.1 deraadt 1718: /*
1719: * Don't execute the shell, thank you.
1720: */
1.41 espie 1721: noExec = true;
1.1 deraadt 1722: } else {
1723: /*
1724: * Just touch the target and note that no shell should be executed.
1725: * Set cmdFILE to stdout to make life easier. Check the commands, too,
1726: * but don't die if they're no good -- it does no harm to keep working
1727: * up the graph.
1728: */
1729: job->cmdFILE = stdout;
1.40 espie 1730: Job_Touch(gn, job->flags&JOB_SILENT);
1.41 espie 1731: noExec = true;
1.1 deraadt 1732: }
1733:
1734: /*
1.6 millert 1735: * If we're not supposed to execute a shell, don't.
1.1 deraadt 1736: */
1737: if (noExec) {
1738: /*
1739: * Unlink and close the command file if we opened one
1740: */
1741: if (job->cmdFILE != stdout) {
1.40 espie 1742: (void)eunlink(tfile);
1.2 deraadt 1743: if (job->cmdFILE != NULL)
1.40 espie 1744: (void)fclose(job->cmdFILE);
1.1 deraadt 1745: } else {
1.40 espie 1746: (void)fflush(stdout);
1.1 deraadt 1747: }
1748:
1749: /*
1750: * We only want to work our way up the graph if we aren't here because
1751: * the commands for the job were no good.
1752: */
1753: if (cmdsOK) {
1754: if (aborting == 0) {
1.40 espie 1755: Lst_ForEachFrom(job->tailCmds, JobSaveCommand, job->node);
1.1 deraadt 1756: Make_Update(job->node);
1757: }
1.28 espie 1758: free(job);
1759: return JOB_FINISHED;
1.1 deraadt 1760: } else {
1.28 espie 1761: free(job);
1762: return JOB_ERROR;
1.1 deraadt 1763: }
1764: } else {
1.40 espie 1765: (void)fflush(job->cmdFILE);
1766: (void)eunlink(tfile);
1.1 deraadt 1767: }
1768:
1769: /*
1770: * Set up the control arguments to the shell. This is based on the flags
1771: * set earlier for this job.
1772: */
1773: JobMakeArgv(job, argv);
1774:
1775: /*
1776: * If we're using pipes to catch output, create the pipe by which we'll
1777: * get the shell's output. If we're using files, print out that we're
1.7 millert 1778: * starting a job and then set up its temporary-file name.
1.1 deraadt 1779: */
1.2 deraadt 1780: if (!compatMake || (job->flags & JOB_FIRST)) {
1.1 deraadt 1781: if (usePipes) {
1782: int fd[2];
1.2 deraadt 1783: if (pipe(fd) == -1)
1784: Punt("Cannot create pipe: %s", strerror(errno));
1.1 deraadt 1785: job->inPipe = fd[0];
1786: job->outPipe = fd[1];
1.40 espie 1787: (void)fcntl(job->inPipe, F_SETFD, 1);
1788: (void)fcntl(job->outPipe, F_SETFD, 1);
1.1 deraadt 1789: } else {
1.40 espie 1790: (void)fprintf(stdout, "Remaking `%s'\n", gn->name);
1791: (void)fflush(stdout);
1.54 espie 1792: (void)strlcpy(job->outFile, TMPPAT, sizeof(job->outFile));
1.7 millert 1793: if ((job->outFd = mkstemp(job->outFile)) == -1)
1794: Punt("Cannot create temp file: %s", strerror(errno));
1.40 espie 1795: (void)fcntl(job->outFd, F_SETFD, 1);
1.1 deraadt 1796: }
1797: }
1798:
1.41 espie 1799: local = true;
1.1 deraadt 1800:
1.40 espie 1801: if (local && nLocal >= maxLocal &&
1.2 deraadt 1802: !(job->flags & JOB_SPECIAL) &&
1.40 espie 1803: maxLocal != 0
1804: )
1.1 deraadt 1805: {
1806: /*
1807: * The job can only be run locally, but we've hit the limit of
1808: * local concurrency, so put the job on hold until some other job
1.6 millert 1809: * finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
1.1 deraadt 1810: * may be run locally even when the local limit has been reached
1.6 millert 1811: * (e.g. when maxLocal == 0), though they will be exported if at
1.2 deraadt 1812: * all possible. In addition, any target marked with .NOEXPORT will
1813: * be run locally if maxLocal is 0.
1.1 deraadt 1814: */
1.41 espie 1815: jobFull = true;
1.6 millert 1816:
1.1 deraadt 1817: if (DEBUG(JOB)) {
1.40 espie 1818: (void)fprintf(stdout, "Can only run job locally.\n");
1819: (void)fflush(stdout);
1.1 deraadt 1820: }
1821: job->flags |= JOB_RESTART;
1.29 espie 1822: Lst_AtEnd(&stoppedJobs, job);
1.1 deraadt 1823: } else {
1.40 espie 1824: if (nLocal >= maxLocal && local) {
1.1 deraadt 1825: /*
1.6 millert 1826: * If we're running this job locally as a special case (see above),
1.1 deraadt 1827: * at least say the table is full.
1828: */
1.41 espie 1829: jobFull = true;
1.1 deraadt 1830: if (DEBUG(JOB)) {
1.40 espie 1831: (void)fprintf(stdout, "Local job queue is full.\n");
1832: (void)fflush(stdout);
1.1 deraadt 1833: }
1834: }
1835: JobExec(job, argv);
1836: }
1.40 espie 1837: return JOB_RUNNING;
1.1 deraadt 1838: }
1839:
1.6 millert 1840: static char *
1.56 espie 1841: JobOutput(Job *job, char *cp, char *endp, int msg)
1.2 deraadt 1842: {
1.40 espie 1843: char *ecp;
1.2 deraadt 1844:
1845: if (commandShell->noPrint) {
1.14 espie 1846: ecp = strstr(cp, commandShell->noPrint);
1.2 deraadt 1847: while (ecp != NULL) {
1848: if (cp != ecp) {
1849: *ecp = '\0';
1850: if (msg && job->node != lastNode) {
1851: MESSAGE(stdout, job->node);
1852: lastNode = job->node;
1853: }
1854: /*
1855: * The only way there wouldn't be a newline after
1856: * this line is if it were the last in the buffer.
1857: * however, since the non-printable comes after it,
1858: * there must be a newline, so we don't print one.
1859: */
1.40 espie 1860: (void)fprintf(stdout, "%s", cp);
1861: (void)fflush(stdout);
1.2 deraadt 1862: }
1863: cp = ecp + commandShell->noPLen;
1864: if (cp != endp) {
1865: /*
1866: * Still more to print, look again after skipping
1867: * the whitespace following the non-printable
1868: * command....
1869: */
1870: cp++;
1871: while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
1872: cp++;
1873: }
1.14 espie 1874: ecp = strstr(cp, commandShell->noPrint);
1.2 deraadt 1875: } else {
1876: return cp;
1877: }
1878: }
1879: }
1880: return cp;
1881: }
1882:
1.1 deraadt 1883: /*-
1884: *-----------------------------------------------------------------------
1.40 espie 1885: * JobDoOutput --
1.1 deraadt 1886: * This function is called at different times depending on
1887: * whether the user has specified that output is to be collected
1888: * via pipes or temporary files. In the former case, we are called
1889: * whenever there is something to read on the pipe. We collect more
1890: * output from the given job and store it in the job's outBuf. If
1891: * this makes up a line, we print it tagged by the job's identifier,
1892: * as necessary.
1893: * If output has been collected in a temporary file, we open the
1894: * file and read it line by line, transfering it to our own
1895: * output channel until the file is empty. At which point we
1896: * remove the temporary file.
1897: * In both cases, however, we keep our figurative eye out for the
1898: * 'noPrint' line for the shell from which the output came. If
1899: * we recognize a line, we don't print it. If the command is not
1.6 millert 1900: * alone on the line (the character after it is not \0 or \n), we
1.1 deraadt 1901: * do print whatever follows it.
1902: *
1903: * Side Effects:
1904: * curPos may be shifted as may the contents of outBuf.
1905: *-----------------------------------------------------------------------
1906: */
1.48 espie 1907: static void
1.56 espie 1908: JobDoOutput(Job *job, /* the job whose output needs printing */
1909: bool finish) /* true if this is the last time we'll be
1.1 deraadt 1910: * called for this job */
1911: {
1.41 espie 1912: bool gotNL = false; /* true if got a newline */
1913: bool fbuf; /* true if our buffer filled up */
1.40 espie 1914: int nr; /* number of bytes read */
1915: int i; /* auxiliary index into outBuf */
1916: int max; /* limit for i (end of current data) */
1917: int nRead; /* (Temporary) number of bytes read */
1.1 deraadt 1918:
1.40 espie 1919: FILE *oFILE; /* Stream pointer to shell's output file */
1920: char inLine[132];
1.1 deraadt 1921:
1.6 millert 1922:
1.1 deraadt 1923: if (usePipes) {
1924: /*
1925: * Read as many bytes as will fit in the buffer.
1926: */
1927: end_loop:
1.41 espie 1928: gotNL = false;
1929: fbuf = false;
1.6 millert 1930:
1.2 deraadt 1931: nRead = read(job->inPipe, &job->outBuf[job->curPos],
1.1 deraadt 1932: JOB_BUFSIZE - job->curPos);
1.40 espie 1933: if (nRead == -1) {
1.1 deraadt 1934: if (DEBUG(JOB)) {
1935: perror("JobDoOutput(piperead)");
1936: }
1937: nr = 0;
1938: } else {
1939: nr = nRead;
1940: }
1941:
1942: /*
1.6 millert 1943: * If we hit the end-of-file (the job is dead), we must flush its
1.1 deraadt 1944: * remaining output, so pretend we read a newline if there's any
1945: * output remaining in the buffer.
1946: * Also clear the 'finish' flag so we stop looping.
1947: */
1.40 espie 1948: if (nr == 0 && job->curPos != 0) {
1.1 deraadt 1949: job->outBuf[job->curPos] = '\n';
1950: nr = 1;
1.41 espie 1951: finish = false;
1.1 deraadt 1952: } else if (nr == 0) {
1.41 espie 1953: finish = false;
1.1 deraadt 1954: }
1.6 millert 1955:
1.1 deraadt 1956: /*
1957: * Look for the last newline in the bytes we just got. If there is
1958: * one, break out of the loop with 'i' as its index and gotNL set
1.41 espie 1959: * true.
1.1 deraadt 1960: */
1961: max = job->curPos + nr;
1962: for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
1963: if (job->outBuf[i] == '\n') {
1.41 espie 1964: gotNL = true;
1.1 deraadt 1965: break;
1966: } else if (job->outBuf[i] == '\0') {
1967: /*
1968: * Why?
1969: */
1970: job->outBuf[i] = ' ';
1971: }
1972: }
1.6 millert 1973:
1.1 deraadt 1974: if (!gotNL) {
1975: job->curPos += nr;
1976: if (job->curPos == JOB_BUFSIZE) {
1977: /*
1978: * If we've run out of buffer space, we have no choice
1.6 millert 1979: * but to print the stuff. sigh.
1.1 deraadt 1980: */
1.41 espie 1981: fbuf = true;
1.1 deraadt 1982: i = job->curPos;
1983: }
1984: }
1.2 deraadt 1985: if (gotNL || fbuf) {
1.1 deraadt 1986: /*
1987: * Need to send the output to the screen. Null terminate it
1988: * first, overwriting the newline character if there was one.
1.6 millert 1989: * So long as the line isn't one we should filter (according
1.58 jsg 1990: * to the shell description), we print the line, preceded
1.1 deraadt 1991: * by a target banner if this target isn't the same as the
1992: * one for which we last printed something.
1993: * The rest of the data in the buffer are then shifted down
1.6 millert 1994: * to the start of the buffer and curPos is set accordingly.
1.1 deraadt 1995: */
1996: job->outBuf[i] = '\0';
1997: if (i >= job->curPos) {
1.2 deraadt 1998: char *cp;
1.6 millert 1999:
1.41 espie 2000: cp = JobOutput(job, job->outBuf, &job->outBuf[i], false);
1.1 deraadt 2001:
2002: /*
2003: * There's still more in that thar buffer. This time, though,
2004: * we know there's no newline at the end, so we add one of
2005: * our own free will.
2006: */
2007: if (*cp != '\0') {
2008: if (job->node != lastNode) {
1.2 deraadt 2009: MESSAGE(stdout, job->node);
1.1 deraadt 2010: lastNode = job->node;
2011: }
1.40 espie 2012: (void)fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
2013: (void)fflush(stdout);
1.1 deraadt 2014: }
2015: }
2016: if (i < max - 1) {
2017: /* shift the remaining characters down */
1.40 espie 2018: (void)memcpy(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
1.6 millert 2019: job->curPos = max - (i + 1);
2020:
1.1 deraadt 2021: } else {
2022: /*
2023: * We have written everything out, so we just start over
2024: * from the start of the buffer. No copying. No nothing.
2025: */
2026: job->curPos = 0;
2027: }
2028: }
2029: if (finish) {
2030: /*
2031: * If the finish flag is true, we must loop until we hit
1.6 millert 2032: * end-of-file on the pipe. This is guaranteed to happen
2033: * eventually since the other end of the pipe is now closed
2034: * (we closed it explicitly and the child has exited). When
1.41 espie 2035: * we do get an EOF, finish will be set false and we'll fall
1.6 millert 2036: * through and out.
1.1 deraadt 2037: */
2038: goto end_loop;
2039: }
2040: } else {
2041: /*
2042: * We've been called to retrieve the output of the job from the
2043: * temporary file where it's been squirreled away. This consists of
2044: * opening the file, reading the output line by line, being sure not
2045: * to print the noPrint line for the shell we used, then close and
2046: * remove the temporary file. Very simple.
2047: *
2048: * Change to read in blocks and do FindSubString type things as for
2049: * pipes? That would allow for "@echo -n..."
2050: */
1.2 deraadt 2051: oFILE = fopen(job->outFile, "r");
2052: if (oFILE != NULL) {
1.40 espie 2053: (void)fprintf(stdout, "Results of making %s:\n", job->node->name);
2054: (void)fflush(stdout);
1.2 deraadt 2055: while (fgets(inLine, sizeof(inLine), oFILE) != NULL) {
1.40 espie 2056: char *cp, *endp, *oendp;
1.1 deraadt 2057:
2058: cp = inLine;
1.2 deraadt 2059: oendp = endp = inLine + strlen(inLine);
1.1 deraadt 2060: if (endp[-1] == '\n') {
2061: *--endp = '\0';
2062: }
1.41 espie 2063: cp = JobOutput(job, inLine, endp, false);
1.1 deraadt 2064:
2065: /*
2066: * There's still more in that thar buffer. This time, though,
2067: * we know there's no newline at the end, so we add one of
2068: * our own free will.
2069: */
1.40 espie 2070: (void)fprintf(stdout, "%s", cp);
2071: (void)fflush(stdout);
1.2 deraadt 2072: if (endp != oendp) {
1.40 espie 2073: (void)fprintf(stdout, "\n");
2074: (void)fflush(stdout);
1.1 deraadt 2075: }
2076: }
1.40 espie 2077: (void)fclose(oFILE);
2078: (void)eunlink(job->outFile);
1.1 deraadt 2079: }
2080: }
2081: }
2082:
2083: /*-
2084: *-----------------------------------------------------------------------
2085: * Job_CatchChildren --
2086: * Handle the exit of a child. Called from Make_Make.
2087: *
2088: * Side Effects:
2089: * The job descriptor is removed from the list of children.
2090: *
2091: * Notes:
2092: * We do waits, blocking or not, according to the wisdom of our
2093: * caller, until there are no more children to report. For each
2094: * job, call JobFinish to finish things off. This will take care of
2095: * putting jobs on the stoppedJobs queue.
2096: *-----------------------------------------------------------------------
2097: */
2098: void
1.56 espie 2099: Job_CatchChildren(bool block) /* true if should block on the wait. */
1.1 deraadt 2100: {
1.51 mpech 2101: pid_t pid; /* pid of dead child */
1.40 espie 2102: Job *job; /* job descriptor for dead child */
2103: LstNode jnode; /* list element for finding job */
2104: int status; /* Exit/termination status */
1.1 deraadt 2105:
2106: /*
2107: * Don't even bother if we know there's no one around.
2108: */
2109: if (nLocal == 0) {
2110: return;
2111: }
1.6 millert 2112:
1.2 deraadt 2113: while ((pid = waitpid((pid_t) -1, &status,
2114: (block?0:WNOHANG)|WUNTRACED)) > 0)
1.1 deraadt 2115: {
1.57 espie 2116: HandleSigs();
1.2 deraadt 2117: if (DEBUG(JOB)) {
1.51 mpech 2118: (void)fprintf(stdout, "Process %ld exited or stopped.\n", (long)pid);
1.40 espie 2119: (void)fflush(stdout);
1.2 deraadt 2120: }
1.6 millert 2121:
1.1 deraadt 2122:
1.29 espie 2123: jnode = Lst_Find(&jobs, JobCmpPid, &pid);
1.1 deraadt 2124:
1.18 espie 2125: if (jnode == NULL) {
1.2 deraadt 2126: if (WIFSIGNALED(status) && (WTERMSIG(status) == SIGCONT)) {
1.29 espie 2127: jnode = Lst_Find(&stoppedJobs, JobCmpPid, &pid);
1.18 espie 2128: if (jnode == NULL) {
1.51 mpech 2129: Error("Resumed child (%ld) not in table", (long)pid);
1.1 deraadt 2130: continue;
2131: }
2132: job = (Job *)Lst_Datum(jnode);
1.29 espie 2133: Lst_Remove(&stoppedJobs, jnode);
1.1 deraadt 2134: } else {
1.51 mpech 2135: Error("Child (%ld) not in table?", (long)pid);
1.1 deraadt 2136: continue;
2137: }
2138: } else {
1.30 espie 2139: job = (Job *)Lst_Datum(jnode);
1.29 espie 2140: Lst_Remove(&jobs, jnode);
1.1 deraadt 2141: nJobs -= 1;
2142: if (jobFull && DEBUG(JOB)) {
1.40 espie 2143: (void)fprintf(stdout, "Job queue is no longer full.\n");
2144: (void)fflush(stdout);
1.1 deraadt 2145: }
1.41 espie 2146: jobFull = false;
1.1 deraadt 2147: nLocal -= 1;
2148: }
2149:
1.2 deraadt 2150: JobFinish(job, &status);
1.1 deraadt 2151: }
2152: }
2153:
2154: /*-
2155: *-----------------------------------------------------------------------
2156: * Job_CatchOutput --
2157: * Catch the output from our children, if we're using
2158: * pipes do so. Otherwise just block time until we get a
1.6 millert 2159: * signal (most likely a SIGCHLD) since there's no point in
1.1 deraadt 2160: * just spinning when there's nothing to do and the reaping
1.6 millert 2161: * of a child can wait for a while.
1.1 deraadt 2162: *
2163: * Side Effects:
2164: * Output is read from pipes if we're piping.
2165: * -----------------------------------------------------------------------
2166: */
2167: void
1.56 espie 2168: Job_CatchOutput(void)
1.1 deraadt 2169: {
1.40 espie 2170: int nfds;
1.1 deraadt 2171: struct timeval timeout;
1.40 espie 2172: LstNode ln;
2173: Job *job;
1.1 deraadt 2174:
1.40 espie 2175: (void)fflush(stdout);
1.1 deraadt 2176: if (usePipes) {
1.8 deraadt 2177: int count = howmany(outputsn+1, NFDBITS) * sizeof(fd_mask);
2178: fd_set *readfdsp = malloc(count);
2179: if (readfdsp == NULL)
2180: return;
2181:
2182: memcpy(readfdsp, outputsp, count);
1.1 deraadt 2183: timeout.tv_sec = SEL_SEC;
2184: timeout.tv_usec = SEL_USEC;
2185:
1.8 deraadt 2186: if ((nfds = select(outputsn+1, readfdsp, (fd_set *) 0,
2187: (fd_set *) 0, &timeout)) <= 0) {
1.57 espie 2188: HandleSigs();
1.8 deraadt 2189: free(readfdsp);
1.1 deraadt 2190: return;
1.8 deraadt 2191: } else {
1.57 espie 2192: HandleSigs();
1.40 espie 2193: for (ln = Lst_First(&jobs); nfds && ln != NULL; ln = Lst_Adv(ln)) {
1.30 espie 2194: job = (Job *)Lst_Datum(ln);
1.8 deraadt 2195: if (FD_ISSET(job->inPipe, readfdsp)) {
1.41 espie 2196: JobDoOutput(job, false);
1.1 deraadt 2197: nfds -= 1;
2198: }
2199: }
2200: }
1.8 deraadt 2201: free(readfdsp);
1.1 deraadt 2202: }
2203: }
2204:
2205: /*-
2206: *-----------------------------------------------------------------------
2207: * Job_Make --
2208: * Start the creation of a target. Basically a front-end for
2209: * JobStart used by the Make module.
2210: *
2211: * Side Effects:
2212: * Another job is started.
2213: *-----------------------------------------------------------------------
2214: */
2215: void
1.56 espie 2216: Job_Make(GNode *gn)
1.1 deraadt 2217: {
1.40 espie 2218: (void)JobStart(gn, 0, NULL);
1.1 deraadt 2219: }
2220:
2221: /*-
2222: *-----------------------------------------------------------------------
2223: * Job_Init --
2224: * Initialize the process module
2225: *
2226: * Side Effects:
2227: * lists and counters are initialized
2228: *-----------------------------------------------------------------------
2229: */
2230: void
1.56 espie 2231: Job_Init(int maxproc, /* the greatest number of jobs which may be
1.1 deraadt 2232: * running at one time */
1.56 espie 2233: int maxlocal) /* the greatest number of local jobs which may
1.1 deraadt 2234: * be running at once. */
2235: {
1.40 espie 2236: GNode *begin; /* node for commands to do at the very start */
2237: int tfd;
2238:
1.54 espie 2239: (void)strlcpy(tfile, TMPPAT, sizeof(tfile));
1.40 espie 2240: if ((tfd = mkstemp(tfile)) == -1)
2241: Punt("Cannot create temp file: %s", strerror(errno));
2242: else
2243: (void)close(tfd);
1.1 deraadt 2244:
1.46 espie 2245: Static_Lst_Init(&jobs);
2246: Static_Lst_Init(&stoppedJobs);
1.40 espie 2247: maxJobs = maxproc;
2248: maxLocal = maxlocal;
2249: nJobs = 0;
2250: nLocal = 0;
1.41 espie 2251: jobFull = false;
1.1 deraadt 2252:
1.40 espie 2253: aborting = 0;
2254: errors = 0;
1.1 deraadt 2255:
1.18 espie 2256: lastNode = NULL;
1.1 deraadt 2257:
1.48 espie 2258: if (maxJobs == 1) {
1.1 deraadt 2259: /*
2260: * If only one job can run at a time, there's no need for a banner,
2261: * no is there?
2262: */
2263: targFmt = "";
2264: } else {
2265: targFmt = TARG_FMT;
2266: }
1.6 millert 2267:
1.2 deraadt 2268: if (shellPath == NULL) {
1.1 deraadt 2269: /*
2270: * The user didn't specify a shell to use, so we are using the
2271: * default one... Both the absolute path and the last component
2272: * must be set. The last component is taken from the 'name' field
2273: * of the default shell description pointed-to by commandShell.
2274: * All default shells are located in _PATH_DEFSHELLDIR.
2275: */
2276: shellName = commandShell->name;
1.41 espie 2277: shellPath = Str_concat(_PATH_DEFSHELLDIR, shellName, '/');
1.1 deraadt 2278: }
2279:
1.2 deraadt 2280: if (commandShell->exit == NULL) {
1.1 deraadt 2281: commandShell->exit = "";
2282: }
1.2 deraadt 2283: if (commandShell->echo == NULL) {
1.1 deraadt 2284: commandShell->echo = "";
2285: }
2286:
2287: /*
2288: * Catch the four signals that POSIX specifies if they aren't ignored.
2289: * JobPassSig will take care of calling JobInterrupt if appropriate.
2290: */
1.2 deraadt 2291: if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
1.57 espie 2292: (void)signal(SIGINT, SigHandler);
1.1 deraadt 2293: }
1.2 deraadt 2294: if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
1.57 espie 2295: (void)signal(SIGHUP, SigHandler);
1.1 deraadt 2296: }
1.2 deraadt 2297: if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
1.57 espie 2298: (void)signal(SIGQUIT, SigHandler);
1.1 deraadt 2299: }
1.2 deraadt 2300: if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
1.57 espie 2301: (void)signal(SIGTERM, SigHandler);
1.1 deraadt 2302: }
2303: /*
2304: * There are additional signals that need to be caught and passed if
2305: * either the export system wants to be told directly of signals or if
1.6 millert 2306: * we're giving each job its own process group (since then it won't get
1.1 deraadt 2307: * signals from the terminal driver as we own the terminal)
2308: */
1.48 espie 2309: #if defined(USE_PGRP)
1.2 deraadt 2310: if (signal(SIGTSTP, SIG_IGN) != SIG_IGN) {
1.57 espie 2311: (void)signal(SIGTSTP, SigHandler);
1.1 deraadt 2312: }
1.2 deraadt 2313: if (signal(SIGTTOU, SIG_IGN) != SIG_IGN) {
1.57 espie 2314: (void)signal(SIGTTOU, SigHandler);
1.1 deraadt 2315: }
1.2 deraadt 2316: if (signal(SIGTTIN, SIG_IGN) != SIG_IGN) {
1.57 espie 2317: (void)signal(SIGTTIN, SigHandler);
1.1 deraadt 2318: }
1.2 deraadt 2319: if (signal(SIGWINCH, SIG_IGN) != SIG_IGN) {
1.57 espie 2320: (void)signal(SIGWINCH, SigHandler);
1.1 deraadt 2321: }
2322: #endif
1.6 millert 2323:
1.41 espie 2324: begin = Targ_FindNode(".BEGIN", TARG_NOCREATE);
1.1 deraadt 2325:
1.18 espie 2326: if (begin != NULL) {
1.2 deraadt 2327: JobStart(begin, JOB_SPECIAL, (Job *)0);
1.1 deraadt 2328: while (nJobs) {
2329: Job_CatchOutput();
1.2 deraadt 2330: Job_CatchChildren(!usePipes);
1.1 deraadt 2331: }
2332: }
1.41 espie 2333: postCommands = Targ_FindNode(".END", TARG_CREATE);
1.1 deraadt 2334: }
2335:
2336: /*-
2337: *-----------------------------------------------------------------------
2338: * Job_Full --
2339: * See if the job table is full. It is considered full if it is OR
2340: * if we are in the process of aborting OR if we have
2341: * reached/exceeded our local quota. This prevents any more jobs
2342: * from starting up.
2343: *
2344: * Results:
1.41 espie 2345: * true if the job table is full, false otherwise
1.1 deraadt 2346: *-----------------------------------------------------------------------
2347: */
1.41 espie 2348: bool
1.56 espie 2349: Job_Full(void)
1.1 deraadt 2350: {
1.40 espie 2351: return aborting || jobFull;
1.1 deraadt 2352: }
2353:
2354: /*-
2355: *-----------------------------------------------------------------------
2356: * Job_Empty --
1.40 espie 2357: * See if the job table is empty. Because the local concurrency may
1.1 deraadt 2358: * be set to 0, it is possible for the job table to become empty,
2359: * while the list of stoppedJobs remains non-empty. In such a case,
2360: * we want to restart as many jobs as we can.
2361: *
2362: * Results:
1.41 espie 2363: * true if it is. false if it ain't.
1.1 deraadt 2364: * -----------------------------------------------------------------------
2365: */
1.41 espie 2366: bool
1.56 espie 2367: Job_Empty(void)
1.1 deraadt 2368: {
2369: if (nJobs == 0) {
1.29 espie 2370: if (!Lst_IsEmpty(&stoppedJobs) && !aborting) {
1.1 deraadt 2371: /*
2372: * The job table is obviously not full if it has no jobs in
2373: * it...Try and restart the stopped jobs.
2374: */
1.41 espie 2375: jobFull = false;
1.2 deraadt 2376: JobRestartJobs();
1.41 espie 2377: return false;
1.1 deraadt 2378: } else {
1.41 espie 2379: return true;
1.1 deraadt 2380: }
2381: } else {
1.41 espie 2382: return false;
1.1 deraadt 2383: }
2384: }
2385:
2386: /*-
2387: *-----------------------------------------------------------------------
2388: * JobMatchShell --
2389: * Find a matching shell in 'shells' given its final component.
2390: *
2391: * Results:
2392: * A pointer to the Shell structure.
2393: *-----------------------------------------------------------------------
2394: */
2395: static Shell *
1.56 espie 2396: JobMatchShell(char *name) /* Final component of shell path */
1.1 deraadt 2397: {
1.40 espie 2398: Shell *sh; /* Pointer into shells table */
2399: Shell *match; /* Longest-matching shell */
2400: char *cp1,
1.1 deraadt 2401: *cp2;
2402: char *eoname;
2403:
1.2 deraadt 2404: eoname = name + strlen(name);
1.1 deraadt 2405:
1.2 deraadt 2406: match = NULL;
1.1 deraadt 2407:
2408: for (sh = shells; sh->name != NULL; sh++) {
1.2 deraadt 2409: for (cp1 = eoname - strlen(sh->name), cp2 = sh->name;
1.1 deraadt 2410: *cp1 != '\0' && *cp1 == *cp2;
2411: cp1++, cp2++) {
2412: continue;
2413: }
2414: if (*cp1 != *cp2) {
2415: continue;
1.2 deraadt 2416: } else if (match == NULL || strlen(match->name) < strlen(sh->name)) {
2417: match = sh;
1.1 deraadt 2418: }
2419: }
1.40 espie 2420: return match == NULL ? sh : match;
1.1 deraadt 2421: }
2422:
2423: /*-
2424: *-----------------------------------------------------------------------
2425: * Job_ParseShell --
2426: * Parse a shell specification and set up commandShell, shellPath
2427: * and shellName appropriately.
2428: *
2429: * Results:
1.41 espie 2430: * false if the specification was incorrect.
1.1 deraadt 2431: *
2432: * Side Effects:
2433: * commandShell points to a Shell structure (either predefined or
2434: * created from the shell spec), shellPath is the full path of the
2435: * shell described by commandShell, while shellName is just the
2436: * final component of shellPath.
2437: *
2438: * Notes:
2439: * A shell specification consists of a .SHELL target, with dependency
2440: * operator, followed by a series of blank-separated words. Double
2441: * quotes can be used to use blanks in words. A backslash escapes
2442: * anything (most notably a double-quote and a space) and
2443: * provides the functionality it does in C. Each word consists of
2444: * keyword and value separated by an equal sign. There should be no
2445: * unnecessary spaces in the word. The keywords are as follows:
1.40 espie 2446: * name Name of shell.
2447: * path Location of shell. Overrides "name" if given
2448: * quiet Command to turn off echoing.
2449: * echo Command to turn echoing on
1.1 deraadt 2450: * filter Result of turning off echoing that shouldn't be
1.40 espie 2451: * printed.
1.1 deraadt 2452: * echoFlag Flag to turn echoing on at the start
2453: * errFlag Flag to turn error checking on at the start
2454: * hasErrCtl True if shell has error checking control
1.40 espie 2455: * check Command to turn on error checking if hasErrCtl
1.41 espie 2456: * is true or template of command to echo a command
1.40 espie 2457: * for which error checking is off if hasErrCtl is
1.41 espie 2458: * false.
1.1 deraadt 2459: * ignore Command to turn off error checking if hasErrCtl
1.41 espie 2460: * is true or template of command to execute a
1.40 espie 2461: * command so as to ignore any errors it returns if
1.41 espie 2462: * hasErrCtl is false.
1.1 deraadt 2463: *-----------------------------------------------------------------------
2464: */
1.41 espie 2465: bool
1.56 espie 2466: Job_ParseShell(const char *line) /* The shell spec */
1.1 deraadt 2467: {
1.40 espie 2468: char **words;
2469: int wordCount;
2470: char **argv;
2471: int argc;
2472: char *path;
2473: Shell newShell;
1.41 espie 2474: bool fullSpec = false;
1.1 deraadt 2475:
1.2 deraadt 2476: while (isspace(*line)) {
1.1 deraadt 2477: line++;
2478: }
1.12 espie 2479:
2480: efree(shellArgv);
1.40 espie 2481:
2482: words = brk_string(line, &wordCount, &shellArgv);
1.1 deraadt 2483:
1.28 espie 2484: memset(&newShell, 0, sizeof(newShell));
1.6 millert 2485:
1.1 deraadt 2486: /*
2487: * Parse the specification by keyword
2488: */
1.12 espie 2489: for (path = NULL, argc = wordCount - 1, argv = words;
1.1 deraadt 2490: argc != 0;
2491: argc--, argv++) {
1.2 deraadt 2492: if (strncmp(*argv, "path=", 5) == 0) {
1.1 deraadt 2493: path = &argv[0][5];
1.2 deraadt 2494: } else if (strncmp(*argv, "name=", 5) == 0) {
1.1 deraadt 2495: newShell.name = &argv[0][5];
2496: } else {
1.2 deraadt 2497: if (strncmp(*argv, "quiet=", 6) == 0) {
1.1 deraadt 2498: newShell.echoOff = &argv[0][6];
1.2 deraadt 2499: } else if (strncmp(*argv, "echo=", 5) == 0) {
1.1 deraadt 2500: newShell.echoOn = &argv[0][5];
1.2 deraadt 2501: } else if (strncmp(*argv, "filter=", 7) == 0) {
1.1 deraadt 2502: newShell.noPrint = &argv[0][7];
2503: newShell.noPLen = strlen(newShell.noPrint);
1.2 deraadt 2504: } else if (strncmp(*argv, "echoFlag=", 9) == 0) {
1.1 deraadt 2505: newShell.echo = &argv[0][9];
1.2 deraadt 2506: } else if (strncmp(*argv, "errFlag=", 8) == 0) {
1.1 deraadt 2507: newShell.exit = &argv[0][8];
1.2 deraadt 2508: } else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
1.1 deraadt 2509: char c = argv[0][10];
1.40 espie 2510: newShell.hasErrCtl = !(c != 'Y' && c != 'y' &&
2511: c != 'T' && c != 't');
1.2 deraadt 2512: } else if (strncmp(*argv, "check=", 6) == 0) {
1.1 deraadt 2513: newShell.errCheck = &argv[0][6];
1.2 deraadt 2514: } else if (strncmp(*argv, "ignore=", 7) == 0) {
1.1 deraadt 2515: newShell.ignErr = &argv[0][7];
2516: } else {
1.2 deraadt 2517: Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
1.1 deraadt 2518: *argv);
1.12 espie 2519: free(words);
1.41 espie 2520: return false;
1.1 deraadt 2521: }
1.41 espie 2522: fullSpec = true;
1.1 deraadt 2523: }
2524: }
2525:
1.2 deraadt 2526: if (path == NULL) {
1.1 deraadt 2527: /*
2528: * If no path was given, the user wants one of the pre-defined shells,
2529: * yes? So we find the one s/he wants with the help of JobMatchShell
2530: * and set things up the right way. shellPath will be set up by
2531: * Job_Init.
2532: */
1.2 deraadt 2533: if (newShell.name == NULL) {
2534: Parse_Error(PARSE_FATAL, "Neither path nor name specified");
1.41 espie 2535: return false;
1.1 deraadt 2536: } else {
1.2 deraadt 2537: commandShell = JobMatchShell(newShell.name);
1.1 deraadt 2538: shellName = newShell.name;
2539: }
2540: } else {
2541: /*
1.6 millert 2542: * The user provided a path. If s/he gave nothing else (fullSpec is
1.41 espie 2543: * false), try and find a matching shell in the ones we know of.
1.1 deraadt 2544: * Else we just take the specification at its word and copy it
2545: * to a new location. In either case, we need to record the
2546: * path the user gave for the shell.
2547: */
2548: shellPath = path;
1.2 deraadt 2549: path = strrchr(path, '/');
2550: if (path == NULL) {
1.1 deraadt 2551: path = shellPath;
2552: } else {
2553: path += 1;
2554: }
1.2 deraadt 2555: if (newShell.name != NULL) {
1.1 deraadt 2556: shellName = newShell.name;
2557: } else {
2558: shellName = path;
2559: }
2560: if (!fullSpec) {
1.2 deraadt 2561: commandShell = JobMatchShell(shellName);
1.1 deraadt 2562: } else {
1.40 espie 2563: commandShell = emalloc(sizeof(Shell));
1.1 deraadt 2564: *commandShell = newShell;
2565: }
2566: }
2567:
2568: if (commandShell->echoOn && commandShell->echoOff) {
1.41 espie 2569: commandShell->hasEchoCtl = true;
1.1 deraadt 2570: }
1.6 millert 2571:
1.1 deraadt 2572: if (!commandShell->hasErrCtl) {
1.2 deraadt 2573: if (commandShell->errCheck == NULL) {
1.1 deraadt 2574: commandShell->errCheck = "";
2575: }
1.2 deraadt 2576: if (commandShell->ignErr == NULL) {
1.1 deraadt 2577: commandShell->ignErr = "%s\n";
2578: }
2579: }
1.6 millert 2580:
1.1 deraadt 2581: /*
2582: * Do not free up the words themselves, since they might be in use by the
2583: * shell specification...
2584: */
1.2 deraadt 2585: free(words);
1.41 espie 2586: return true;
1.1 deraadt 2587: }
2588:
2589: /*-
2590: *-----------------------------------------------------------------------
2591: * JobInterrupt --
2592: * Handle the receipt of an interrupt.
2593: *
2594: * Side Effects:
2595: * All children are killed. Another job will be started if the
2596: * .INTERRUPT target was given.
2597: *-----------------------------------------------------------------------
2598: */
2599: static void
1.56 espie 2600: JobInterrupt(int runINTERRUPT, /* Non-zero if commands for the .INTERRUPT
1.1 deraadt 2601: * target should be executed */
1.56 espie 2602: int signo) /* signal received */
1.1 deraadt 2603: {
1.40 espie 2604: LstNode ln; /* element in job table */
2605: Job *job; /* job descriptor in that element */
2606: GNode *interrupt; /* the node describing the .INTERRUPT target */
1.6 millert 2607:
1.1 deraadt 2608: aborting = ABORT_INTERRUPT;
2609:
1.40 espie 2610: for (ln = Lst_First(&jobs); ln != NULL; ln = Lst_Adv(ln)) {
1.30 espie 2611: job = (Job *)Lst_Datum(ln);
1.1 deraadt 2612:
1.2 deraadt 2613: if (!Targ_Precious(job->node)) {
1.40 espie 2614: const char *file = job->node->path == NULL ?
1.1 deraadt 2615: job->node->name :
1.40 espie 2616: job->node->path;
1.2 deraadt 2617: if (!noExecute && eunlink(file) != -1) {
2618: Error("*** %s removed", file);
1.1 deraadt 2619: }
2620: }
2621: if (job->pid) {
1.2 deraadt 2622: if (DEBUG(JOB)) {
1.40 espie 2623: (void)fprintf(stdout,
1.51 mpech 2624: "JobInterrupt passing signal to child %ld.\n",
2625: (long)job->pid);
1.40 espie 2626: (void)fflush(stdout);
1.2 deraadt 2627: }
2628: KILL(job->pid, signo);
2629: }
1.1 deraadt 2630: }
2631:
2632: if (runINTERRUPT && !touchFlag) {
1.41 espie 2633: interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
1.18 espie 2634: if (interrupt != NULL) {
1.41 espie 2635: ignoreErrors = false;
1.1 deraadt 2636:
1.2 deraadt 2637: JobStart(interrupt, JOB_IGNDOTS, (Job *)0);
1.1 deraadt 2638: while (nJobs) {
2639: Job_CatchOutput();
1.2 deraadt 2640: Job_CatchChildren(!usePipes);
1.1 deraadt 2641: }
2642: }
2643: }
1.40 espie 2644: (void)eunlink(tfile);
1.2 deraadt 2645: exit(signo);
1.1 deraadt 2646: }
2647:
2648: /*
2649: *-----------------------------------------------------------------------
1.12 espie 2650: * Job_Finish --
1.1 deraadt 2651: * Do final processing such as the running of the commands
1.6 millert 2652: * attached to the .END target.
1.1 deraadt 2653: *
2654: * Results:
2655: * Number of errors reported.
1.40 espie 2656: *
2657: * Side Effects:
2658: * The process' temporary file (tfile) is removed if it still
2659: * existed.
1.1 deraadt 2660: *-----------------------------------------------------------------------
2661: */
2662: int
1.56 espie 2663: Job_Finish(void)
1.1 deraadt 2664: {
1.29 espie 2665: if (postCommands != NULL && !Lst_IsEmpty(&postCommands->commands)) {
1.1 deraadt 2666: if (errors) {
1.2 deraadt 2667: Error("Errors reported so .END ignored");
1.1 deraadt 2668: } else {
1.2 deraadt 2669: JobStart(postCommands, JOB_SPECIAL | JOB_IGNDOTS, NULL);
1.1 deraadt 2670:
2671: while (nJobs) {
2672: Job_CatchOutput();
1.2 deraadt 2673: Job_CatchChildren(!usePipes);
1.1 deraadt 2674: }
2675: }
2676: }
1.40 espie 2677: (void)eunlink(tfile);
2678: return errors;
1.1 deraadt 2679: }
2680:
1.12 espie 2681: /*-
2682: *-----------------------------------------------------------------------
2683: * Job_End --
2684: * Cleanup any memory used by the jobs module
2685: *
2686: * Side Effects:
2687: * Memory is freed
2688: *-----------------------------------------------------------------------
2689: */
1.41 espie 2690: #ifdef CLEANUP
1.12 espie 2691: void
1.56 espie 2692: Job_End(void)
1.12 espie 2693: {
2694: efree(shellArgv);
1.41 espie 2695: }
1.13 espie 2696: #endif
1.40 espie 2697:
1.1 deraadt 2698: /*-
2699: *-----------------------------------------------------------------------
2700: * Job_Wait --
2701: * Waits for all running jobs to finish and returns. Sets 'aborting'
2702: * to ABORT_WAIT to prevent other jobs from starting.
2703: *
2704: * Side Effects:
2705: * Currently running jobs finish.
2706: *
2707: *-----------------------------------------------------------------------
2708: */
2709: void
1.56 espie 2710: Job_Wait(void)
1.1 deraadt 2711: {
2712: aborting = ABORT_WAIT;
2713: while (nJobs != 0) {
2714: Job_CatchOutput();
2715: Job_CatchChildren(!usePipes);
2716: }
2717: aborting = 0;
2718: }
2719:
2720: /*-
2721: *-----------------------------------------------------------------------
2722: * Job_AbortAll --
2723: * Abort all currently running jobs without handling output or anything.
2724: * This function is to be called only in the event of a major
2725: * error. Most definitely NOT to be called from JobInterrupt.
2726: *
2727: * Side Effects:
2728: * All children are killed, not just the firstborn
2729: *-----------------------------------------------------------------------
2730: */
2731: void
1.56 espie 2732: Job_AbortAll(void)
1.1 deraadt 2733: {
1.40 espie 2734: LstNode ln; /* element in job table */
2735: Job *job; /* the job descriptor in that element */
2736: int foo;
1.6 millert 2737:
1.1 deraadt 2738: aborting = ABORT_ERROR;
1.6 millert 2739:
1.1 deraadt 2740: if (nJobs) {
1.40 espie 2741: for (ln = Lst_First(&jobs); ln != NULL; ln = Lst_Adv(ln)) {
1.30 espie 2742: job = (Job *)Lst_Datum(ln);
1.1 deraadt 2743:
2744: /*
2745: * kill the child process with increasingly drastic signals to make
1.6 millert 2746: * darn sure it's dead.
1.1 deraadt 2747: */
2748: KILL(job->pid, SIGINT);
2749: KILL(job->pid, SIGKILL);
2750: }
2751: }
1.6 millert 2752:
1.1 deraadt 2753: /*
2754: * Catch as many children as want to report in at first, then give up
2755: */
1.51 mpech 2756: while (waitpid(-1, &foo, WNOHANG) > 0)
1.1 deraadt 2757: continue;
1.40 espie 2758: (void)eunlink(tfile);
1.2 deraadt 2759: }
1.40 espie 2760:
1.2 deraadt 2761: /*-
2762: *-----------------------------------------------------------------------
2763: * JobRestartJobs --
2764: * Tries to restart stopped jobs if there are slots available.
2765: * Note that this tries to restart them regardless of pending errors.
2766: * It's not good to leave stopped jobs lying around!
2767: *
2768: * Side Effects:
2769: * Resumes(and possibly migrates) jobs.
2770: *-----------------------------------------------------------------------
2771: */
2772: static void
1.56 espie 2773: JobRestartJobs(void)
1.2 deraadt 2774: {
1.19 espie 2775: Job *job;
2776:
1.40 espie 2777: while (!jobFull && (job = (Job *)Lst_DeQueue(&stoppedJobs)) != NULL) {
1.2 deraadt 2778: if (DEBUG(JOB)) {
1.40 espie 2779: (void)fprintf(stdout,
1.2 deraadt 2780: "Job queue is not full. Restarting a stopped job.\n");
1.40 espie 2781: (void)fflush(stdout);
1.2 deraadt 2782: }
1.19 espie 2783: JobRestart(job);
1.2 deraadt 2784: }
1.1 deraadt 2785: }
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