job.c revision 237578
1237578Sobrien/* $NetBSD: job.c,v 1.162 2012/06/12 19:21:50 joerg Exp $ */ 2236769Sobrien 3236769Sobrien/* 4236769Sobrien * Copyright (c) 1988, 1989, 1990 The Regents of the University of California. 5236769Sobrien * All rights reserved. 6236769Sobrien * 7236769Sobrien * This code is derived from software contributed to Berkeley by 8236769Sobrien * Adam de Boor. 9236769Sobrien * 10236769Sobrien * Redistribution and use in source and binary forms, with or without 11236769Sobrien * modification, are permitted provided that the following conditions 12236769Sobrien * are met: 13236769Sobrien * 1. Redistributions of source code must retain the above copyright 14236769Sobrien * notice, this list of conditions and the following disclaimer. 15236769Sobrien * 2. Redistributions in binary form must reproduce the above copyright 16236769Sobrien * notice, this list of conditions and the following disclaimer in the 17236769Sobrien * documentation and/or other materials provided with the distribution. 18236769Sobrien * 3. Neither the name of the University nor the names of its contributors 19236769Sobrien * may be used to endorse or promote products derived from this software 20236769Sobrien * without specific prior written permission. 21236769Sobrien * 22236769Sobrien * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23236769Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24236769Sobrien * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25236769Sobrien * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26236769Sobrien * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27236769Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28236769Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29236769Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30236769Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31236769Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32236769Sobrien * SUCH DAMAGE. 33236769Sobrien */ 34236769Sobrien 35236769Sobrien/* 36236769Sobrien * Copyright (c) 1988, 1989 by Adam de Boor 37236769Sobrien * Copyright (c) 1989 by Berkeley Softworks 38236769Sobrien * All rights reserved. 39236769Sobrien * 40236769Sobrien * This code is derived from software contributed to Berkeley by 41236769Sobrien * Adam de Boor. 42236769Sobrien * 43236769Sobrien * Redistribution and use in source and binary forms, with or without 44236769Sobrien * modification, are permitted provided that the following conditions 45236769Sobrien * are met: 46236769Sobrien * 1. Redistributions of source code must retain the above copyright 47236769Sobrien * notice, this list of conditions and the following disclaimer. 48236769Sobrien * 2. Redistributions in binary form must reproduce the above copyright 49236769Sobrien * notice, this list of conditions and the following disclaimer in the 50236769Sobrien * documentation and/or other materials provided with the distribution. 51236769Sobrien * 3. All advertising materials mentioning features or use of this software 52236769Sobrien * must display the following acknowledgement: 53236769Sobrien * This product includes software developed by the University of 54236769Sobrien * California, Berkeley and its contributors. 55236769Sobrien * 4. Neither the name of the University nor the names of its contributors 56236769Sobrien * may be used to endorse or promote products derived from this software 57236769Sobrien * without specific prior written permission. 58236769Sobrien * 59236769Sobrien * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60236769Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61236769Sobrien * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62236769Sobrien * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63236769Sobrien * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64236769Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65236769Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66236769Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67236769Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68236769Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69236769Sobrien * SUCH DAMAGE. 70236769Sobrien */ 71236769Sobrien 72236769Sobrien#ifndef MAKE_NATIVE 73237578Sobrienstatic char rcsid[] = "$NetBSD: job.c,v 1.162 2012/06/12 19:21:50 joerg Exp $"; 74236769Sobrien#else 75236769Sobrien#include <sys/cdefs.h> 76236769Sobrien#ifndef lint 77236769Sobrien#if 0 78236769Sobrienstatic char sccsid[] = "@(#)job.c 8.2 (Berkeley) 3/19/94"; 79236769Sobrien#else 80237578Sobrien__RCSID("$NetBSD: job.c,v 1.162 2012/06/12 19:21:50 joerg Exp $"); 81236769Sobrien#endif 82236769Sobrien#endif /* not lint */ 83236769Sobrien#endif 84236769Sobrien 85236769Sobrien/*- 86236769Sobrien * job.c -- 87236769Sobrien * handle the creation etc. of our child processes. 88236769Sobrien * 89236769Sobrien * Interface: 90236769Sobrien * Job_Make Start the creation of the given target. 91236769Sobrien * 92236769Sobrien * Job_CatchChildren Check for and handle the termination of any 93236769Sobrien * children. This must be called reasonably 94236769Sobrien * frequently to keep the whole make going at 95236769Sobrien * a decent clip, since job table entries aren't 96236769Sobrien * removed until their process is caught this way. 97236769Sobrien * 98236769Sobrien * Job_CatchOutput Print any output our children have produced. 99236769Sobrien * Should also be called fairly frequently to 100236769Sobrien * keep the user informed of what's going on. 101236769Sobrien * If no output is waiting, it will block for 102236769Sobrien * a time given by the SEL_* constants, below, 103236769Sobrien * or until output is ready. 104236769Sobrien * 105236769Sobrien * Job_Init Called to intialize this module. in addition, 106236769Sobrien * any commands attached to the .BEGIN target 107236769Sobrien * are executed before this function returns. 108236769Sobrien * Hence, the makefile must have been parsed 109236769Sobrien * before this function is called. 110236769Sobrien * 111236769Sobrien * Job_End Cleanup any memory used. 112236769Sobrien * 113236769Sobrien * Job_ParseShell Given the line following a .SHELL target, parse 114236769Sobrien * the line as a shell specification. Returns 115236769Sobrien * FAILURE if the spec was incorrect. 116236769Sobrien * 117236769Sobrien * Job_Finish Perform any final processing which needs doing. 118236769Sobrien * This includes the execution of any commands 119236769Sobrien * which have been/were attached to the .END 120236769Sobrien * target. It should only be called when the 121236769Sobrien * job table is empty. 122236769Sobrien * 123236769Sobrien * Job_AbortAll Abort all currently running jobs. It doesn't 124236769Sobrien * handle output or do anything for the jobs, 125236769Sobrien * just kills them. It should only be called in 126236769Sobrien * an emergency, as it were. 127236769Sobrien * 128236769Sobrien * Job_CheckCommands Verify that the commands for a target are 129236769Sobrien * ok. Provide them if necessary and possible. 130236769Sobrien * 131236769Sobrien * Job_Touch Update a target without really updating it. 132236769Sobrien * 133236769Sobrien * Job_Wait Wait for all currently-running jobs to finish. 134236769Sobrien */ 135236769Sobrien 136236769Sobrien#ifdef HAVE_CONFIG_H 137236769Sobrien# include "config.h" 138236769Sobrien#endif 139236769Sobrien#include <sys/types.h> 140236769Sobrien#include <sys/stat.h> 141236769Sobrien#include <sys/file.h> 142236769Sobrien#include <sys/time.h> 143236769Sobrien#include "wait.h" 144236769Sobrien 145236769Sobrien#include <errno.h> 146236769Sobrien#include <fcntl.h> 147236769Sobrien#if !defined(USE_SELECT) && defined(HAVE_POLL_H) 148236769Sobrien#include <poll.h> 149236769Sobrien#else 150236769Sobrien#ifndef USE_SELECT /* no poll.h */ 151236769Sobrien# define USE_SELECT 152236769Sobrien#endif 153236769Sobrien#if defined(HAVE_SYS_SELECT_H) 154236769Sobrien# include <sys/select.h> 155236769Sobrien#endif 156236769Sobrien#endif 157236769Sobrien#include <signal.h> 158236769Sobrien#include <stdio.h> 159236769Sobrien#include <string.h> 160236769Sobrien#include <utime.h> 161236769Sobrien#if defined(HAVE_SYS_SOCKET_H) 162236769Sobrien# include <sys/socket.h> 163236769Sobrien#endif 164236769Sobrien 165236769Sobrien#include "make.h" 166236769Sobrien#include "hash.h" 167236769Sobrien#include "dir.h" 168236769Sobrien#include "job.h" 169236769Sobrien#include "pathnames.h" 170236769Sobrien#include "trace.h" 171236769Sobrien# define STATIC static 172236769Sobrien 173236769Sobrien/* 174236769Sobrien * error handling variables 175236769Sobrien */ 176236769Sobrienstatic int errors = 0; /* number of errors reported */ 177236769Sobrienstatic int aborting = 0; /* why is the make aborting? */ 178236769Sobrien#define ABORT_ERROR 1 /* Because of an error */ 179236769Sobrien#define ABORT_INTERRUPT 2 /* Because it was interrupted */ 180236769Sobrien#define ABORT_WAIT 3 /* Waiting for jobs to finish */ 181236769Sobrien#define JOB_TOKENS "+EI+" /* Token to requeue for each abort state */ 182236769Sobrien 183236769Sobrien/* 184236769Sobrien * this tracks the number of tokens currently "out" to build jobs. 185236769Sobrien */ 186236769Sobrienint jobTokensRunning = 0; 187236769Sobrienint not_parallel = 0; /* set if .NOT_PARALLEL */ 188236769Sobrien 189236769Sobrien/* 190236769Sobrien * XXX: Avoid SunOS bug... FILENO() is fp->_file, and file 191236769Sobrien * is a char! So when we go above 127 we turn negative! 192236769Sobrien */ 193236769Sobrien#define FILENO(a) ((unsigned) fileno(a)) 194236769Sobrien 195236769Sobrien/* 196236769Sobrien * post-make command processing. The node postCommands is really just the 197236769Sobrien * .END target but we keep it around to avoid having to search for it 198236769Sobrien * all the time. 199236769Sobrien */ 200236769Sobrienstatic GNode *postCommands = NULL; 201236769Sobrien /* node containing commands to execute when 202236769Sobrien * everything else is done */ 203236769Sobrienstatic int numCommands; /* The number of commands actually printed 204236769Sobrien * for a target. Should this number be 205236769Sobrien * 0, no shell will be executed. */ 206236769Sobrien 207236769Sobrien/* 208236769Sobrien * Return values from JobStart. 209236769Sobrien */ 210236769Sobrien#define JOB_RUNNING 0 /* Job is running */ 211236769Sobrien#define JOB_ERROR 1 /* Error in starting the job */ 212236769Sobrien#define JOB_FINISHED 2 /* The job is already finished */ 213236769Sobrien 214236769Sobrien/* 215236769Sobrien * Descriptions for various shells. 216236769Sobrien * 217236769Sobrien * The build environment may set DEFSHELL_INDEX to one of 218236769Sobrien * DEFSHELL_INDEX_SH, DEFSHELL_INDEX_KSH, or DEFSHELL_INDEX_CSH, to 219236769Sobrien * select one of the prefedined shells as the default shell. 220236769Sobrien * 221236769Sobrien * Alternatively, the build environment may set DEFSHELL_CUSTOM to the 222236769Sobrien * name or the full path of a sh-compatible shell, which will be used as 223236769Sobrien * the default shell. 224236769Sobrien * 225236769Sobrien * ".SHELL" lines in Makefiles can choose the default shell from the 226236769Sobrien # set defined here, or add additional shells. 227236769Sobrien */ 228236769Sobrien 229236769Sobrien#ifdef DEFSHELL_CUSTOM 230236769Sobrien#define DEFSHELL_INDEX_CUSTOM 0 231236769Sobrien#define DEFSHELL_INDEX_SH 1 232236769Sobrien#define DEFSHELL_INDEX_KSH 2 233236769Sobrien#define DEFSHELL_INDEX_CSH 3 234236769Sobrien#else /* !DEFSHELL_CUSTOM */ 235236769Sobrien#define DEFSHELL_INDEX_SH 0 236236769Sobrien#define DEFSHELL_INDEX_KSH 1 237236769Sobrien#define DEFSHELL_INDEX_CSH 2 238236769Sobrien#endif /* !DEFSHELL_CUSTOM */ 239236769Sobrien 240236769Sobrien#ifndef DEFSHELL_INDEX 241236769Sobrien#define DEFSHELL_INDEX 0 /* DEFSHELL_INDEX_CUSTOM or DEFSHELL_INDEX_SH */ 242236769Sobrien#endif /* !DEFSHELL_INDEX */ 243236769Sobrien 244236769Sobrienstatic Shell shells[] = { 245236769Sobrien#ifdef DEFSHELL_CUSTOM 246236769Sobrien /* 247236769Sobrien * An sh-compatible shell with a non-standard name. 248236769Sobrien * 249236769Sobrien * Keep this in sync with the "sh" description below, but avoid 250236769Sobrien * non-portable features that might not be supplied by all 251236769Sobrien * sh-compatible shells. 252236769Sobrien */ 253236769Sobrien{ 254236769Sobrien DEFSHELL_CUSTOM, 255236769Sobrien FALSE, "", "", "", 0, 256236769Sobrien FALSE, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#', 257236769Sobrien "", 258236769Sobrien "", 259236769Sobrien}, 260236769Sobrien#endif /* DEFSHELL_CUSTOM */ 261236769Sobrien /* 262236769Sobrien * SH description. Echo control is also possible and, under 263236769Sobrien * sun UNIX anyway, one can even control error checking. 264236769Sobrien */ 265236769Sobrien{ 266236769Sobrien "sh", 267236769Sobrien FALSE, "", "", "", 0, 268236769Sobrien FALSE, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#', 269236769Sobrien#if defined(MAKE_NATIVE) && defined(__NetBSD__) 270236769Sobrien "q", 271236769Sobrien#else 272236769Sobrien "", 273236769Sobrien#endif 274236769Sobrien "", 275236769Sobrien}, 276236769Sobrien /* 277236769Sobrien * KSH description. 278236769Sobrien */ 279236769Sobrien{ 280236769Sobrien "ksh", 281236769Sobrien TRUE, "set +v", "set -v", "set +v", 6, 282236769Sobrien FALSE, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#', 283236769Sobrien "v", 284236769Sobrien "", 285236769Sobrien}, 286236769Sobrien /* 287236769Sobrien * CSH description. The csh can do echo control by playing 288236769Sobrien * with the setting of the 'echo' shell variable. Sadly, 289236769Sobrien * however, it is unable to do error control nicely. 290236769Sobrien */ 291236769Sobrien{ 292236769Sobrien "csh", 293236769Sobrien TRUE, "unset verbose", "set verbose", "unset verbose", 10, 294236769Sobrien FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"\n", "", "'\\\n'", '#', 295236769Sobrien "v", "e", 296236769Sobrien}, 297236769Sobrien /* 298236769Sobrien * UNKNOWN. 299236769Sobrien */ 300236769Sobrien{ 301236769Sobrien NULL, 302236769Sobrien FALSE, NULL, NULL, NULL, 0, 303236769Sobrien FALSE, NULL, NULL, NULL, NULL, 0, 304236769Sobrien NULL, NULL, 305236769Sobrien} 306236769Sobrien}; 307236769Sobrienstatic Shell *commandShell = &shells[DEFSHELL_INDEX]; /* this is the shell to 308236769Sobrien * which we pass all 309236769Sobrien * commands in the Makefile. 310236769Sobrien * It is set by the 311236769Sobrien * Job_ParseShell function */ 312236769Sobrienconst char *shellPath = NULL, /* full pathname of 313236769Sobrien * executable image */ 314236769Sobrien *shellName = NULL; /* last component of shell */ 315236769Sobrienstatic const char *shellArgv = NULL; /* Custom shell args */ 316236769Sobrien 317236769Sobrien 318236769SobrienSTATIC Job *job_table; /* The structures that describe them */ 319236769SobrienSTATIC Job *job_table_end; /* job_table + maxJobs */ 320236769Sobrienstatic int wantToken; /* we want a token */ 321236769Sobrienstatic int lurking_children = 0; 322236769Sobrienstatic int make_suspended = 0; /* non-zero if we've seen a SIGTSTP (etc) */ 323236769Sobrien 324236769Sobrien/* 325236769Sobrien * Set of descriptors of pipes connected to 326236769Sobrien * the output channels of children 327236769Sobrien */ 328236769Sobrienstatic struct pollfd *fds = NULL; 329236769Sobrienstatic Job **jobfds = NULL; 330236769Sobrienstatic int nfds = 0; 331236769Sobrienstatic void watchfd(Job *); 332236769Sobrienstatic void clearfd(Job *); 333236769Sobrienstatic int readyfd(Job *); 334236769Sobrien 335236769SobrienSTATIC GNode *lastNode; /* The node for which output was most recently 336236769Sobrien * produced. */ 337236769Sobrienstatic char *targPrefix = NULL; /* What we print at the start of TARG_FMT */ 338236769Sobrienstatic Job tokenWaitJob; /* token wait pseudo-job */ 339236769Sobrien 340236769Sobrienstatic Job childExitJob; /* child exit pseudo-job */ 341236769Sobrien#define CHILD_EXIT "." 342236769Sobrien#define DO_JOB_RESUME "R" 343236769Sobrien 344236769Sobrien#define TARG_FMT "%s %s ---\n" /* Default format */ 345236769Sobrien#define MESSAGE(fp, gn) \ 346236769Sobrien if (maxJobs != 1) \ 347236769Sobrien (void)fprintf(fp, TARG_FMT, targPrefix, gn->name) 348236769Sobrien 349236769Sobrienstatic sigset_t caught_signals; /* Set of signals we handle */ 350236769Sobrien#if defined(SYSV) 351236769Sobrien#define KILLPG(pid, sig) kill(-(pid), (sig)) 352236769Sobrien#else 353236769Sobrien#define KILLPG(pid, sig) killpg((pid), (sig)) 354236769Sobrien#endif 355236769Sobrien 356236769Sobrienstatic void JobChildSig(int); 357236769Sobrienstatic void JobContinueSig(int); 358236769Sobrienstatic Job *JobFindPid(int, int, Boolean); 359236769Sobrienstatic int JobPrintCommand(void *, void *); 360236769Sobrienstatic int JobSaveCommand(void *, void *); 361236769Sobrienstatic void JobClose(Job *); 362236769Sobrienstatic void JobExec(Job *, char **); 363236769Sobrienstatic void JobMakeArgv(Job *, char **); 364236769Sobrienstatic int JobStart(GNode *, int); 365236769Sobrienstatic char *JobOutput(Job *, char *, char *, int); 366236769Sobrienstatic void JobDoOutput(Job *, Boolean); 367236769Sobrienstatic Shell *JobMatchShell(const char *); 368237578Sobrienstatic void JobInterrupt(int, int) MAKE_ATTR_DEAD; 369236769Sobrienstatic void JobRestartJobs(void); 370236769Sobrienstatic void JobTokenAdd(void); 371236769Sobrienstatic void JobSigLock(sigset_t *); 372236769Sobrienstatic void JobSigUnlock(sigset_t *); 373236769Sobrienstatic void JobSigReset(void); 374236769Sobrien 375236769Sobrienconst char *malloc_options="A"; 376236769Sobrien 377236769Sobrienstatic void 378236769Sobrienjob_table_dump(const char *where) 379236769Sobrien{ 380236769Sobrien Job *job; 381236769Sobrien 382236769Sobrien fprintf(debug_file, "job table @ %s\n", where); 383236769Sobrien for (job = job_table; job < job_table_end; job++) { 384236769Sobrien fprintf(debug_file, "job %d, status %d, flags %d, pid %d\n", 385236769Sobrien (int)(job - job_table), job->job_state, job->flags, job->pid); 386236769Sobrien } 387236769Sobrien} 388236769Sobrien 389236769Sobrien/* 390236769Sobrien * JobSigLock/JobSigUnlock 391236769Sobrien * 392236769Sobrien * Signal lock routines to get exclusive access. Currently used to 393236769Sobrien * protect `jobs' and `stoppedJobs' list manipulations. 394236769Sobrien */ 395236769Sobrienstatic void JobSigLock(sigset_t *omaskp) 396236769Sobrien{ 397236769Sobrien if (sigprocmask(SIG_BLOCK, &caught_signals, omaskp) != 0) { 398236769Sobrien Punt("JobSigLock: sigprocmask: %s", strerror(errno)); 399236769Sobrien sigemptyset(omaskp); 400236769Sobrien } 401236769Sobrien} 402236769Sobrien 403236769Sobrienstatic void JobSigUnlock(sigset_t *omaskp) 404236769Sobrien{ 405236769Sobrien (void)sigprocmask(SIG_SETMASK, omaskp, NULL); 406236769Sobrien} 407236769Sobrien 408236769Sobrienstatic void 409236769SobrienJobCreatePipe(Job *job, int minfd) 410236769Sobrien{ 411236769Sobrien int i, fd; 412236769Sobrien 413236769Sobrien if (pipe(job->jobPipe) == -1) 414236769Sobrien Punt("Cannot create pipe: %s", strerror(errno)); 415236769Sobrien 416236769Sobrien /* Set close-on-exec flag for both */ 417236769Sobrien (void)fcntl(job->jobPipe[0], F_SETFD, 1); 418236769Sobrien (void)fcntl(job->jobPipe[1], F_SETFD, 1); 419236769Sobrien 420236769Sobrien /* 421236769Sobrien * We mark the input side of the pipe non-blocking; we poll(2) the 422236769Sobrien * pipe when we're waiting for a job token, but we might lose the 423236769Sobrien * race for the token when a new one becomes available, so the read 424236769Sobrien * from the pipe should not block. 425236769Sobrien */ 426236769Sobrien fcntl(job->jobPipe[0], F_SETFL, 427236769Sobrien fcntl(job->jobPipe[0], F_GETFL, 0) | O_NONBLOCK); 428236769Sobrien 429236769Sobrien for (i = 0; i < 2; i++) { 430236769Sobrien /* Avoid using low numbered fds */ 431236769Sobrien fd = fcntl(job->jobPipe[i], F_DUPFD, minfd); 432236769Sobrien if (fd != -1) { 433236769Sobrien close(job->jobPipe[i]); 434236769Sobrien job->jobPipe[i] = fd; 435236769Sobrien } 436236769Sobrien } 437236769Sobrien} 438236769Sobrien 439236769Sobrien/*- 440236769Sobrien *----------------------------------------------------------------------- 441236769Sobrien * JobCondPassSig -- 442236769Sobrien * Pass a signal to a job 443236769Sobrien * 444236769Sobrien * Input: 445236769Sobrien * signop Signal to send it 446236769Sobrien * 447236769Sobrien * Side Effects: 448236769Sobrien * None, except the job may bite it. 449236769Sobrien * 450236769Sobrien *----------------------------------------------------------------------- 451236769Sobrien */ 452236769Sobrienstatic void 453236769SobrienJobCondPassSig(int signo) 454236769Sobrien{ 455236769Sobrien Job *job; 456236769Sobrien 457236769Sobrien if (DEBUG(JOB)) { 458236769Sobrien (void)fprintf(debug_file, "JobCondPassSig(%d) called.\n", signo); 459236769Sobrien } 460236769Sobrien 461236769Sobrien for (job = job_table; job < job_table_end; job++) { 462236769Sobrien if (job->job_state != JOB_ST_RUNNING) 463236769Sobrien continue; 464236769Sobrien if (DEBUG(JOB)) { 465236769Sobrien (void)fprintf(debug_file, 466236769Sobrien "JobCondPassSig passing signal %d to child %d.\n", 467236769Sobrien signo, job->pid); 468236769Sobrien } 469236769Sobrien KILLPG(job->pid, signo); 470236769Sobrien } 471236769Sobrien} 472236769Sobrien 473236769Sobrien/*- 474236769Sobrien *----------------------------------------------------------------------- 475236769Sobrien * JobChldSig -- 476236769Sobrien * SIGCHLD handler. 477236769Sobrien * 478236769Sobrien * Input: 479236769Sobrien * signo The signal number we've received 480236769Sobrien * 481236769Sobrien * Results: 482236769Sobrien * None. 483236769Sobrien * 484236769Sobrien * Side Effects: 485236769Sobrien * Sends a token on the child exit pipe to wake us up from 486236769Sobrien * select()/poll(). 487236769Sobrien * 488236769Sobrien *----------------------------------------------------------------------- 489236769Sobrien */ 490236769Sobrienstatic void 491237578SobrienJobChildSig(int signo MAKE_ATTR_UNUSED) 492236769Sobrien{ 493236769Sobrien write(childExitJob.outPipe, CHILD_EXIT, 1); 494236769Sobrien} 495236769Sobrien 496236769Sobrien 497236769Sobrien/*- 498236769Sobrien *----------------------------------------------------------------------- 499236769Sobrien * JobContinueSig -- 500236769Sobrien * Resume all stopped jobs. 501236769Sobrien * 502236769Sobrien * Input: 503236769Sobrien * signo The signal number we've received 504236769Sobrien * 505236769Sobrien * Results: 506236769Sobrien * None. 507236769Sobrien * 508236769Sobrien * Side Effects: 509236769Sobrien * Jobs start running again. 510236769Sobrien * 511236769Sobrien *----------------------------------------------------------------------- 512236769Sobrien */ 513236769Sobrienstatic void 514237578SobrienJobContinueSig(int signo MAKE_ATTR_UNUSED) 515236769Sobrien{ 516236769Sobrien /* 517236769Sobrien * Defer sending to SIGCONT to our stopped children until we return 518236769Sobrien * from the signal handler. 519236769Sobrien */ 520236769Sobrien write(childExitJob.outPipe, DO_JOB_RESUME, 1); 521236769Sobrien} 522236769Sobrien 523236769Sobrien/*- 524236769Sobrien *----------------------------------------------------------------------- 525236769Sobrien * JobPassSig -- 526236769Sobrien * Pass a signal on to all jobs, then resend to ourselves. 527236769Sobrien * 528236769Sobrien * Input: 529236769Sobrien * signo The signal number we've received 530236769Sobrien * 531236769Sobrien * Results: 532236769Sobrien * None. 533236769Sobrien * 534236769Sobrien * Side Effects: 535236769Sobrien * We die by the same signal. 536236769Sobrien * 537236769Sobrien *----------------------------------------------------------------------- 538236769Sobrien */ 539237578SobrienMAKE_ATTR_DEAD static void 540236769SobrienJobPassSig_int(int signo) 541236769Sobrien{ 542236769Sobrien /* Run .INTERRUPT target then exit */ 543236769Sobrien JobInterrupt(TRUE, signo); 544236769Sobrien} 545236769Sobrien 546237578SobrienMAKE_ATTR_DEAD static void 547236769SobrienJobPassSig_term(int signo) 548236769Sobrien{ 549236769Sobrien /* Dont run .INTERRUPT target then exit */ 550236769Sobrien JobInterrupt(FALSE, signo); 551236769Sobrien} 552236769Sobrien 553236769Sobrienstatic void 554236769SobrienJobPassSig_suspend(int signo) 555236769Sobrien{ 556236769Sobrien sigset_t nmask, omask; 557236769Sobrien struct sigaction act; 558236769Sobrien 559236769Sobrien /* Suppress job started/continued messages */ 560236769Sobrien make_suspended = 1; 561236769Sobrien 562236769Sobrien /* Pass the signal onto every job */ 563236769Sobrien JobCondPassSig(signo); 564236769Sobrien 565236769Sobrien /* 566236769Sobrien * Send ourselves the signal now we've given the message to everyone else. 567236769Sobrien * Note we block everything else possible while we're getting the signal. 568236769Sobrien * This ensures that all our jobs get continued when we wake up before 569236769Sobrien * we take any other signal. 570236769Sobrien */ 571236769Sobrien sigfillset(&nmask); 572236769Sobrien sigdelset(&nmask, signo); 573236769Sobrien (void)sigprocmask(SIG_SETMASK, &nmask, &omask); 574236769Sobrien 575236769Sobrien act.sa_handler = SIG_DFL; 576236769Sobrien sigemptyset(&act.sa_mask); 577236769Sobrien act.sa_flags = 0; 578236769Sobrien (void)sigaction(signo, &act, NULL); 579236769Sobrien 580236769Sobrien if (DEBUG(JOB)) { 581236769Sobrien (void)fprintf(debug_file, 582236769Sobrien "JobPassSig passing signal %d to self.\n", signo); 583236769Sobrien } 584236769Sobrien 585236769Sobrien (void)kill(getpid(), signo); 586236769Sobrien 587236769Sobrien /* 588236769Sobrien * We've been continued. 589236769Sobrien * 590236769Sobrien * A whole host of signals continue to happen! 591236769Sobrien * SIGCHLD for any processes that actually suspended themselves. 592236769Sobrien * SIGCHLD for any processes that exited while we were alseep. 593236769Sobrien * The SIGCONT that actually caused us to wakeup. 594236769Sobrien * 595236769Sobrien * Since we defer passing the SIGCONT on to our children until 596236769Sobrien * the main processing loop, we can be sure that all the SIGCHLD 597236769Sobrien * events will have happened by then - and that the waitpid() will 598236769Sobrien * collect the child 'suspended' events. 599236769Sobrien * For correct sequencing we just need to ensure we process the 600236769Sobrien * waitpid() before passign on the SIGCONT. 601236769Sobrien * 602236769Sobrien * In any case nothing else is needed here. 603236769Sobrien */ 604236769Sobrien 605236769Sobrien /* Restore handler and signal mask */ 606236769Sobrien act.sa_handler = JobPassSig_suspend; 607236769Sobrien (void)sigaction(signo, &act, NULL); 608236769Sobrien (void)sigprocmask(SIG_SETMASK, &omask, NULL); 609236769Sobrien} 610236769Sobrien 611236769Sobrien/*- 612236769Sobrien *----------------------------------------------------------------------- 613236769Sobrien * JobFindPid -- 614236769Sobrien * Compare the pid of the job with the given pid and return 0 if they 615236769Sobrien * are equal. This function is called from Job_CatchChildren 616236769Sobrien * to find the job descriptor of the finished job. 617236769Sobrien * 618236769Sobrien * Input: 619236769Sobrien * job job to examine 620236769Sobrien * pid process id desired 621236769Sobrien * 622236769Sobrien * Results: 623236769Sobrien * Job with matching pid 624236769Sobrien * 625236769Sobrien * Side Effects: 626236769Sobrien * None 627236769Sobrien *----------------------------------------------------------------------- 628236769Sobrien */ 629236769Sobrienstatic Job * 630236769SobrienJobFindPid(int pid, int status, Boolean isJobs) 631236769Sobrien{ 632236769Sobrien Job *job; 633236769Sobrien 634236769Sobrien for (job = job_table; job < job_table_end; job++) { 635236769Sobrien if ((job->job_state == status) && job->pid == pid) 636236769Sobrien return job; 637236769Sobrien } 638236769Sobrien if (DEBUG(JOB) && isJobs) 639236769Sobrien job_table_dump("no pid"); 640236769Sobrien return NULL; 641236769Sobrien} 642236769Sobrien 643236769Sobrien/*- 644236769Sobrien *----------------------------------------------------------------------- 645236769Sobrien * JobPrintCommand -- 646236769Sobrien * Put out another command for the given job. If the command starts 647236769Sobrien * with an @ or a - we process it specially. In the former case, 648236769Sobrien * so long as the -s and -n flags weren't given to make, we stick 649236769Sobrien * a shell-specific echoOff command in the script. In the latter, 650236769Sobrien * we ignore errors for the entire job, unless the shell has error 651236769Sobrien * control. 652236769Sobrien * If the command is just "..." we take all future commands for this 653236769Sobrien * job to be commands to be executed once the entire graph has been 654236769Sobrien * made and return non-zero to signal that the end of the commands 655236769Sobrien * was reached. These commands are later attached to the postCommands 656236769Sobrien * node and executed by Job_End when all things are done. 657236769Sobrien * This function is called from JobStart via Lst_ForEach. 658236769Sobrien * 659236769Sobrien * Input: 660236769Sobrien * cmdp command string to print 661236769Sobrien * jobp job for which to print it 662236769Sobrien * 663236769Sobrien * Results: 664236769Sobrien * Always 0, unless the command was "..." 665236769Sobrien * 666236769Sobrien * Side Effects: 667236769Sobrien * If the command begins with a '-' and the shell has no error control, 668236769Sobrien * the JOB_IGNERR flag is set in the job descriptor. 669236769Sobrien * If the command is "..." and we're not ignoring such things, 670236769Sobrien * tailCmds is set to the successor node of the cmd. 671236769Sobrien * numCommands is incremented if the command is actually printed. 672236769Sobrien *----------------------------------------------------------------------- 673236769Sobrien */ 674236769Sobrienstatic int 675236769SobrienJobPrintCommand(void *cmdp, void *jobp) 676236769Sobrien{ 677236769Sobrien Boolean noSpecials; /* true if we shouldn't worry about 678236769Sobrien * inserting special commands into 679236769Sobrien * the input stream. */ 680236769Sobrien Boolean shutUp = FALSE; /* true if we put a no echo command 681236769Sobrien * into the command file */ 682236769Sobrien Boolean errOff = FALSE; /* true if we turned error checking 683236769Sobrien * off before printing the command 684236769Sobrien * and need to turn it back on */ 685236769Sobrien const char *cmdTemplate; /* Template to use when printing the 686236769Sobrien * command */ 687236769Sobrien char *cmdStart; /* Start of expanded command */ 688236769Sobrien char *escCmd = NULL; /* Command with quotes/backticks escaped */ 689236769Sobrien char *cmd = (char *)cmdp; 690236769Sobrien Job *job = (Job *)jobp; 691236769Sobrien char *cp, *tmp; 692236769Sobrien int i, j; 693236769Sobrien 694236769Sobrien noSpecials = NoExecute(job->node); 695236769Sobrien 696236769Sobrien if (strcmp(cmd, "...") == 0) { 697236769Sobrien job->node->type |= OP_SAVE_CMDS; 698236769Sobrien if ((job->flags & JOB_IGNDOTS) == 0) { 699236769Sobrien job->tailCmds = Lst_Succ(Lst_Member(job->node->commands, 700236769Sobrien cmd)); 701236769Sobrien return 1; 702236769Sobrien } 703236769Sobrien return 0; 704236769Sobrien } 705236769Sobrien 706236769Sobrien#define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \ 707236769Sobrien (void)fprintf(debug_file, fmt, arg); \ 708236769Sobrien } \ 709236769Sobrien (void)fprintf(job->cmdFILE, fmt, arg); \ 710236769Sobrien (void)fflush(job->cmdFILE); 711236769Sobrien 712236769Sobrien numCommands += 1; 713236769Sobrien 714236769Sobrien cmdStart = cmd = Var_Subst(NULL, cmd, job->node, FALSE); 715236769Sobrien 716236769Sobrien cmdTemplate = "%s\n"; 717236769Sobrien 718236769Sobrien /* 719236769Sobrien * Check for leading @' and -'s to control echoing and error checking. 720236769Sobrien */ 721236769Sobrien while (*cmd == '@' || *cmd == '-' || (*cmd == '+')) { 722236769Sobrien switch (*cmd) { 723236769Sobrien case '@': 724236769Sobrien shutUp = DEBUG(LOUD) ? FALSE : TRUE; 725236769Sobrien break; 726236769Sobrien case '-': 727236769Sobrien job->flags |= JOB_IGNERR; 728236769Sobrien errOff = TRUE; 729236769Sobrien break; 730236769Sobrien case '+': 731236769Sobrien if (noSpecials) { 732236769Sobrien /* 733236769Sobrien * We're not actually executing anything... 734236769Sobrien * but this one needs to be - use compat mode just for it. 735236769Sobrien */ 736236769Sobrien CompatRunCommand(cmdp, job->node); 737236769Sobrien return 0; 738236769Sobrien } 739236769Sobrien break; 740236769Sobrien } 741236769Sobrien cmd++; 742236769Sobrien } 743236769Sobrien 744236769Sobrien while (isspace((unsigned char) *cmd)) 745236769Sobrien cmd++; 746236769Sobrien 747236769Sobrien /* 748236769Sobrien * If the shell doesn't have error control the alternate echo'ing will 749236769Sobrien * be done (to avoid showing additional error checking code) 750236769Sobrien * and this will need the characters '$ ` \ "' escaped 751236769Sobrien */ 752236769Sobrien 753236769Sobrien if (!commandShell->hasErrCtl) { 754236769Sobrien /* Worst that could happen is every char needs escaping. */ 755236769Sobrien escCmd = bmake_malloc((strlen(cmd) * 2) + 1); 756236769Sobrien for (i = 0, j= 0; cmd[i] != '\0'; i++, j++) { 757236769Sobrien if (cmd[i] == '$' || cmd[i] == '`' || cmd[i] == '\\' || 758236769Sobrien cmd[i] == '"') 759236769Sobrien escCmd[j++] = '\\'; 760236769Sobrien escCmd[j] = cmd[i]; 761236769Sobrien } 762236769Sobrien escCmd[j] = 0; 763236769Sobrien } 764236769Sobrien 765236769Sobrien if (shutUp) { 766236769Sobrien if (!(job->flags & JOB_SILENT) && !noSpecials && 767236769Sobrien commandShell->hasEchoCtl) { 768236769Sobrien DBPRINTF("%s\n", commandShell->echoOff); 769236769Sobrien } else { 770236769Sobrien if (commandShell->hasErrCtl) 771236769Sobrien shutUp = FALSE; 772236769Sobrien } 773236769Sobrien } 774236769Sobrien 775236769Sobrien if (errOff) { 776236769Sobrien if (!noSpecials) { 777236769Sobrien if (commandShell->hasErrCtl) { 778236769Sobrien /* 779236769Sobrien * we don't want the error-control commands showing 780236769Sobrien * up either, so we turn off echoing while executing 781236769Sobrien * them. We could put another field in the shell 782236769Sobrien * structure to tell JobDoOutput to look for this 783236769Sobrien * string too, but why make it any more complex than 784236769Sobrien * it already is? 785236769Sobrien */ 786236769Sobrien if (!(job->flags & JOB_SILENT) && !shutUp && 787236769Sobrien commandShell->hasEchoCtl) { 788236769Sobrien DBPRINTF("%s\n", commandShell->echoOff); 789236769Sobrien DBPRINTF("%s\n", commandShell->ignErr); 790236769Sobrien DBPRINTF("%s\n", commandShell->echoOn); 791236769Sobrien } else { 792236769Sobrien DBPRINTF("%s\n", commandShell->ignErr); 793236769Sobrien } 794236769Sobrien } else if (commandShell->ignErr && 795236769Sobrien (*commandShell->ignErr != '\0')) 796236769Sobrien { 797236769Sobrien /* 798236769Sobrien * The shell has no error control, so we need to be 799236769Sobrien * weird to get it to ignore any errors from the command. 800236769Sobrien * If echoing is turned on, we turn it off and use the 801236769Sobrien * errCheck template to echo the command. Leave echoing 802236769Sobrien * off so the user doesn't see the weirdness we go through 803236769Sobrien * to ignore errors. Set cmdTemplate to use the weirdness 804236769Sobrien * instead of the simple "%s\n" template. 805236769Sobrien */ 806236769Sobrien if (!(job->flags & JOB_SILENT) && !shutUp) { 807236769Sobrien if (commandShell->hasEchoCtl) { 808236769Sobrien DBPRINTF("%s\n", commandShell->echoOff); 809236769Sobrien } 810236769Sobrien DBPRINTF(commandShell->errCheck, escCmd); 811236769Sobrien shutUp = TRUE; 812236769Sobrien } else { 813236769Sobrien if (!shutUp) { 814236769Sobrien DBPRINTF(commandShell->errCheck, escCmd); 815236769Sobrien } 816236769Sobrien } 817236769Sobrien cmdTemplate = commandShell->ignErr; 818236769Sobrien /* 819236769Sobrien * The error ignoration (hee hee) is already taken care 820236769Sobrien * of by the ignErr template, so pretend error checking 821236769Sobrien * is still on. 822236769Sobrien */ 823236769Sobrien errOff = FALSE; 824236769Sobrien } else { 825236769Sobrien errOff = FALSE; 826236769Sobrien } 827236769Sobrien } else { 828236769Sobrien errOff = FALSE; 829236769Sobrien } 830236769Sobrien } else { 831236769Sobrien 832236769Sobrien /* 833236769Sobrien * If errors are being checked and the shell doesn't have error control 834236769Sobrien * but does supply an errOut template, then setup commands to run 835236769Sobrien * through it. 836236769Sobrien */ 837236769Sobrien 838236769Sobrien if (!commandShell->hasErrCtl && commandShell->errOut && 839236769Sobrien (*commandShell->errOut != '\0')) { 840236769Sobrien if (!(job->flags & JOB_SILENT) && !shutUp) { 841236769Sobrien if (commandShell->hasEchoCtl) { 842236769Sobrien DBPRINTF("%s\n", commandShell->echoOff); 843236769Sobrien } 844236769Sobrien DBPRINTF(commandShell->errCheck, escCmd); 845236769Sobrien shutUp = TRUE; 846236769Sobrien } 847236769Sobrien /* If it's a comment line or blank, treat as an ignored error */ 848236769Sobrien if ((escCmd[0] == commandShell->commentChar) || 849236769Sobrien (escCmd[0] == 0)) 850236769Sobrien cmdTemplate = commandShell->ignErr; 851236769Sobrien else 852236769Sobrien cmdTemplate = commandShell->errOut; 853236769Sobrien errOff = FALSE; 854236769Sobrien } 855236769Sobrien } 856236769Sobrien 857236769Sobrien if (DEBUG(SHELL) && strcmp(shellName, "sh") == 0 && 858236769Sobrien (job->flags & JOB_TRACED) == 0) { 859236769Sobrien DBPRINTF("set -%s\n", "x"); 860236769Sobrien job->flags |= JOB_TRACED; 861236769Sobrien } 862236769Sobrien 863236769Sobrien if ((cp = Check_Cwd_Cmd(cmd)) != NULL) { 864236769Sobrien DBPRINTF("test -d %s && ", cp); 865236769Sobrien DBPRINTF("cd %s\n", cp); 866236769Sobrien } 867236769Sobrien 868236769Sobrien DBPRINTF(cmdTemplate, cmd); 869236769Sobrien free(cmdStart); 870236769Sobrien if (escCmd) 871236769Sobrien free(escCmd); 872236769Sobrien if (errOff) { 873236769Sobrien /* 874236769Sobrien * If echoing is already off, there's no point in issuing the 875236769Sobrien * echoOff command. Otherwise we issue it and pretend it was on 876236769Sobrien * for the whole command... 877236769Sobrien */ 878236769Sobrien if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){ 879236769Sobrien DBPRINTF("%s\n", commandShell->echoOff); 880236769Sobrien shutUp = TRUE; 881236769Sobrien } 882236769Sobrien DBPRINTF("%s\n", commandShell->errCheck); 883236769Sobrien } 884236769Sobrien if (shutUp && commandShell->hasEchoCtl) { 885236769Sobrien DBPRINTF("%s\n", commandShell->echoOn); 886236769Sobrien } 887236769Sobrien if (cp != NULL) { 888236769Sobrien DBPRINTF("test -d %s && ", cp); 889236769Sobrien DBPRINTF("cd %s\n", Var_Value(".OBJDIR", VAR_GLOBAL, &tmp)); 890236769Sobrien } 891236769Sobrien return 0; 892236769Sobrien} 893236769Sobrien 894236769Sobrien/*- 895236769Sobrien *----------------------------------------------------------------------- 896236769Sobrien * JobSaveCommand -- 897236769Sobrien * Save a command to be executed when everything else is done. 898236769Sobrien * Callback function for JobFinish... 899236769Sobrien * 900236769Sobrien * Results: 901236769Sobrien * Always returns 0 902236769Sobrien * 903236769Sobrien * Side Effects: 904236769Sobrien * The command is tacked onto the end of postCommands's commands list. 905236769Sobrien * 906236769Sobrien *----------------------------------------------------------------------- 907236769Sobrien */ 908236769Sobrienstatic int 909236769SobrienJobSaveCommand(void *cmd, void *gn) 910236769Sobrien{ 911236769Sobrien cmd = Var_Subst(NULL, (char *)cmd, (GNode *)gn, FALSE); 912236769Sobrien (void)Lst_AtEnd(postCommands->commands, cmd); 913236769Sobrien return(0); 914236769Sobrien} 915236769Sobrien 916236769Sobrien 917236769Sobrien/*- 918236769Sobrien *----------------------------------------------------------------------- 919236769Sobrien * JobClose -- 920236769Sobrien * Called to close both input and output pipes when a job is finished. 921236769Sobrien * 922236769Sobrien * Results: 923236769Sobrien * Nada 924236769Sobrien * 925236769Sobrien * Side Effects: 926236769Sobrien * The file descriptors associated with the job are closed. 927236769Sobrien * 928236769Sobrien *----------------------------------------------------------------------- 929236769Sobrien */ 930236769Sobrienstatic void 931236769SobrienJobClose(Job *job) 932236769Sobrien{ 933236769Sobrien clearfd(job); 934236769Sobrien (void)close(job->outPipe); 935236769Sobrien job->outPipe = -1; 936236769Sobrien 937236769Sobrien JobDoOutput(job, TRUE); 938236769Sobrien (void)close(job->inPipe); 939236769Sobrien job->inPipe = -1; 940236769Sobrien} 941236769Sobrien 942236769Sobrien/*- 943236769Sobrien *----------------------------------------------------------------------- 944236769Sobrien * JobFinish -- 945236769Sobrien * Do final processing for the given job including updating 946236769Sobrien * parents and starting new jobs as available/necessary. Note 947236769Sobrien * that we pay no attention to the JOB_IGNERR flag here. 948236769Sobrien * This is because when we're called because of a noexecute flag 949236769Sobrien * or something, jstat.w_status is 0 and when called from 950236769Sobrien * Job_CatchChildren, the status is zeroed if it s/b ignored. 951236769Sobrien * 952236769Sobrien * Input: 953236769Sobrien * job job to finish 954236769Sobrien * status sub-why job went away 955236769Sobrien * 956236769Sobrien * Results: 957236769Sobrien * None 958236769Sobrien * 959236769Sobrien * Side Effects: 960236769Sobrien * Final commands for the job are placed on postCommands. 961236769Sobrien * 962236769Sobrien * If we got an error and are aborting (aborting == ABORT_ERROR) and 963236769Sobrien * the job list is now empty, we are done for the day. 964236769Sobrien * If we recognized an error (errors !=0), we set the aborting flag 965236769Sobrien * to ABORT_ERROR so no more jobs will be started. 966236769Sobrien *----------------------------------------------------------------------- 967236769Sobrien */ 968236769Sobrien/*ARGSUSED*/ 969236769Sobrienstatic void 970236769SobrienJobFinish (Job *job, WAIT_T status) 971236769Sobrien{ 972236769Sobrien Boolean done, return_job_token; 973236769Sobrien 974236769Sobrien if (DEBUG(JOB)) { 975236769Sobrien fprintf(debug_file, "Jobfinish: %d [%s], status %d\n", 976236769Sobrien job->pid, job->node->name, status); 977236769Sobrien } 978236769Sobrien 979236769Sobrien if ((WIFEXITED(status) && 980236769Sobrien (((WEXITSTATUS(status) != 0) && !(job->flags & JOB_IGNERR)))) || 981236769Sobrien WIFSIGNALED(status)) 982236769Sobrien { 983236769Sobrien /* 984236769Sobrien * If it exited non-zero and either we're doing things our 985236769Sobrien * way or we're not ignoring errors, the job is finished. 986236769Sobrien * Similarly, if the shell died because of a signal 987236769Sobrien * the job is also finished. In these 988236769Sobrien * cases, finish out the job's output before printing the exit 989236769Sobrien * status... 990236769Sobrien */ 991236769Sobrien JobClose(job); 992236769Sobrien if (job->cmdFILE != NULL && job->cmdFILE != stdout) { 993236769Sobrien (void)fclose(job->cmdFILE); 994236769Sobrien job->cmdFILE = NULL; 995236769Sobrien } 996236769Sobrien done = TRUE; 997236769Sobrien } else if (WIFEXITED(status)) { 998236769Sobrien /* 999236769Sobrien * Deal with ignored errors in -B mode. We need to print a message 1000236769Sobrien * telling of the ignored error as well as setting status.w_status 1001236769Sobrien * to 0 so the next command gets run. To do this, we set done to be 1002236769Sobrien * TRUE if in -B mode and the job exited non-zero. 1003236769Sobrien */ 1004236769Sobrien done = WEXITSTATUS(status) != 0; 1005236769Sobrien /* 1006236769Sobrien * Old comment said: "Note we don't 1007236769Sobrien * want to close down any of the streams until we know we're at the 1008236769Sobrien * end." 1009236769Sobrien * But we do. Otherwise when are we going to print the rest of the 1010236769Sobrien * stuff? 1011236769Sobrien */ 1012236769Sobrien JobClose(job); 1013236769Sobrien } else { 1014236769Sobrien /* 1015236769Sobrien * No need to close things down or anything. 1016236769Sobrien */ 1017236769Sobrien done = FALSE; 1018236769Sobrien } 1019236769Sobrien 1020236769Sobrien if (done) { 1021236769Sobrien if (WIFEXITED(status)) { 1022236769Sobrien if (DEBUG(JOB)) { 1023236769Sobrien (void)fprintf(debug_file, "Process %d [%s] exited.\n", 1024236769Sobrien job->pid, job->node->name); 1025236769Sobrien } 1026236769Sobrien if (WEXITSTATUS(status) != 0) { 1027236769Sobrien if (job->node != lastNode) { 1028236769Sobrien MESSAGE(stdout, job->node); 1029236769Sobrien lastNode = job->node; 1030236769Sobrien } 1031236769Sobrien#ifdef USE_META 1032236769Sobrien if (useMeta) { 1033236769Sobrien meta_job_error(job, job->node, job->flags, WEXITSTATUS(status)); 1034236769Sobrien } 1035236769Sobrien#endif 1036236769Sobrien (void)printf("*** [%s] Error code %d%s\n", 1037236769Sobrien job->node->name, 1038236769Sobrien WEXITSTATUS(status), 1039236769Sobrien (job->flags & JOB_IGNERR) ? " (ignored)" : ""); 1040236769Sobrien if (job->flags & JOB_IGNERR) { 1041236769Sobrien WAIT_STATUS(status) = 0; 1042236769Sobrien } else { 1043236769Sobrien PrintOnError(job->node, NULL); 1044236769Sobrien } 1045236769Sobrien } else if (DEBUG(JOB)) { 1046236769Sobrien if (job->node != lastNode) { 1047236769Sobrien MESSAGE(stdout, job->node); 1048236769Sobrien lastNode = job->node; 1049236769Sobrien } 1050236769Sobrien (void)printf("*** [%s] Completed successfully\n", 1051236769Sobrien job->node->name); 1052236769Sobrien } 1053236769Sobrien } else { 1054236769Sobrien if (job->node != lastNode) { 1055236769Sobrien MESSAGE(stdout, job->node); 1056236769Sobrien lastNode = job->node; 1057236769Sobrien } 1058236769Sobrien (void)printf("*** [%s] Signal %d\n", 1059236769Sobrien job->node->name, WTERMSIG(status)); 1060236769Sobrien } 1061236769Sobrien (void)fflush(stdout); 1062236769Sobrien } 1063236769Sobrien 1064236769Sobrien#ifdef USE_META 1065236769Sobrien if (useMeta) { 1066236769Sobrien meta_job_finish(job); 1067236769Sobrien } 1068236769Sobrien#endif 1069236769Sobrien 1070236769Sobrien return_job_token = FALSE; 1071236769Sobrien 1072236769Sobrien Trace_Log(JOBEND, job); 1073236769Sobrien if (!(job->flags & JOB_SPECIAL)) { 1074236769Sobrien if ((WAIT_STATUS(status) != 0) || 1075236769Sobrien (aborting == ABORT_ERROR) || 1076236769Sobrien (aborting == ABORT_INTERRUPT)) 1077236769Sobrien return_job_token = TRUE; 1078236769Sobrien } 1079236769Sobrien 1080236769Sobrien if ((aborting != ABORT_ERROR) && (aborting != ABORT_INTERRUPT) && 1081236769Sobrien (WAIT_STATUS(status) == 0)) { 1082236769Sobrien /* 1083236769Sobrien * As long as we aren't aborting and the job didn't return a non-zero 1084236769Sobrien * status that we shouldn't ignore, we call Make_Update to update 1085236769Sobrien * the parents. In addition, any saved commands for the node are placed 1086236769Sobrien * on the .END target. 1087236769Sobrien */ 1088236769Sobrien if (job->tailCmds != NULL) { 1089236769Sobrien Lst_ForEachFrom(job->node->commands, job->tailCmds, 1090236769Sobrien JobSaveCommand, 1091236769Sobrien job->node); 1092236769Sobrien } 1093236769Sobrien job->node->made = MADE; 1094236769Sobrien if (!(job->flags & JOB_SPECIAL)) 1095236769Sobrien return_job_token = TRUE; 1096236769Sobrien Make_Update(job->node); 1097236769Sobrien job->job_state = JOB_ST_FREE; 1098236769Sobrien } else if (WAIT_STATUS(status)) { 1099236769Sobrien errors += 1; 1100236769Sobrien job->job_state = JOB_ST_FREE; 1101236769Sobrien } 1102236769Sobrien 1103236769Sobrien /* 1104236769Sobrien * Set aborting if any error. 1105236769Sobrien */ 1106236769Sobrien if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) { 1107236769Sobrien /* 1108236769Sobrien * If we found any errors in this batch of children and the -k flag 1109236769Sobrien * wasn't given, we set the aborting flag so no more jobs get 1110236769Sobrien * started. 1111236769Sobrien */ 1112236769Sobrien aborting = ABORT_ERROR; 1113236769Sobrien } 1114236769Sobrien 1115236769Sobrien if (return_job_token) 1116236769Sobrien Job_TokenReturn(); 1117236769Sobrien 1118236769Sobrien if (aborting == ABORT_ERROR && jobTokensRunning == 0) { 1119236769Sobrien /* 1120236769Sobrien * If we are aborting and the job table is now empty, we finish. 1121236769Sobrien */ 1122236769Sobrien Finish(errors); 1123236769Sobrien } 1124236769Sobrien} 1125236769Sobrien 1126236769Sobrien/*- 1127236769Sobrien *----------------------------------------------------------------------- 1128236769Sobrien * Job_Touch -- 1129236769Sobrien * Touch the given target. Called by JobStart when the -t flag was 1130236769Sobrien * given 1131236769Sobrien * 1132236769Sobrien * Input: 1133236769Sobrien * gn the node of the file to touch 1134236769Sobrien * silent TRUE if should not print message 1135236769Sobrien * 1136236769Sobrien * Results: 1137236769Sobrien * None 1138236769Sobrien * 1139236769Sobrien * Side Effects: 1140236769Sobrien * The data modification of the file is changed. In addition, if the 1141236769Sobrien * file did not exist, it is created. 1142236769Sobrien *----------------------------------------------------------------------- 1143236769Sobrien */ 1144236769Sobrienvoid 1145236769SobrienJob_Touch(GNode *gn, Boolean silent) 1146236769Sobrien{ 1147236769Sobrien int streamID; /* ID of stream opened to do the touch */ 1148236769Sobrien struct utimbuf times; /* Times for utime() call */ 1149236769Sobrien 1150236769Sobrien if (gn->type & (OP_JOIN|OP_USE|OP_USEBEFORE|OP_EXEC|OP_OPTIONAL| 1151236769Sobrien OP_SPECIAL|OP_PHONY)) { 1152236769Sobrien /* 1153236769Sobrien * .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets 1154236769Sobrien * and, as such, shouldn't really be created. 1155236769Sobrien */ 1156236769Sobrien return; 1157236769Sobrien } 1158236769Sobrien 1159236769Sobrien if (!silent || NoExecute(gn)) { 1160236769Sobrien (void)fprintf(stdout, "touch %s\n", gn->name); 1161236769Sobrien (void)fflush(stdout); 1162236769Sobrien } 1163236769Sobrien 1164236769Sobrien if (NoExecute(gn)) { 1165236769Sobrien return; 1166236769Sobrien } 1167236769Sobrien 1168236769Sobrien if (gn->type & OP_ARCHV) { 1169236769Sobrien Arch_Touch(gn); 1170236769Sobrien } else if (gn->type & OP_LIB) { 1171236769Sobrien Arch_TouchLib(gn); 1172236769Sobrien } else { 1173236769Sobrien char *file = gn->path ? gn->path : gn->name; 1174236769Sobrien 1175236769Sobrien times.actime = times.modtime = now; 1176236769Sobrien if (utime(file, ×) < 0){ 1177236769Sobrien streamID = open(file, O_RDWR | O_CREAT, 0666); 1178236769Sobrien 1179236769Sobrien if (streamID >= 0) { 1180236769Sobrien char c; 1181236769Sobrien 1182236769Sobrien /* 1183236769Sobrien * Read and write a byte to the file to change the 1184236769Sobrien * modification time, then close the file. 1185236769Sobrien */ 1186236769Sobrien if (read(streamID, &c, 1) == 1) { 1187236769Sobrien (void)lseek(streamID, (off_t)0, SEEK_SET); 1188236769Sobrien (void)write(streamID, &c, 1); 1189236769Sobrien } 1190236769Sobrien 1191236769Sobrien (void)close(streamID); 1192236769Sobrien } else { 1193236769Sobrien (void)fprintf(stdout, "*** couldn't touch %s: %s", 1194236769Sobrien file, strerror(errno)); 1195236769Sobrien (void)fflush(stdout); 1196236769Sobrien } 1197236769Sobrien } 1198236769Sobrien } 1199236769Sobrien} 1200236769Sobrien 1201236769Sobrien/*- 1202236769Sobrien *----------------------------------------------------------------------- 1203236769Sobrien * Job_CheckCommands -- 1204236769Sobrien * Make sure the given node has all the commands it needs. 1205236769Sobrien * 1206236769Sobrien * Input: 1207236769Sobrien * gn The target whose commands need verifying 1208236769Sobrien * abortProc Function to abort with message 1209236769Sobrien * 1210236769Sobrien * Results: 1211236769Sobrien * TRUE if the commands list is/was ok. 1212236769Sobrien * 1213236769Sobrien * Side Effects: 1214236769Sobrien * The node will have commands from the .DEFAULT rule added to it 1215236769Sobrien * if it needs them. 1216236769Sobrien *----------------------------------------------------------------------- 1217236769Sobrien */ 1218236769SobrienBoolean 1219236769SobrienJob_CheckCommands(GNode *gn, void (*abortProc)(const char *, ...)) 1220236769Sobrien{ 1221236769Sobrien if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) && 1222236769Sobrien ((gn->type & OP_LIB) == 0 || Lst_IsEmpty(gn->children))) { 1223236769Sobrien /* 1224236769Sobrien * No commands. Look for .DEFAULT rule from which we might infer 1225236769Sobrien * commands 1226236769Sobrien */ 1227236769Sobrien if ((DEFAULT != NULL) && !Lst_IsEmpty(DEFAULT->commands) && 1228236769Sobrien (gn->type & OP_SPECIAL) == 0) { 1229236769Sobrien char *p1; 1230236769Sobrien /* 1231236769Sobrien * Make only looks for a .DEFAULT if the node was never the 1232236769Sobrien * target of an operator, so that's what we do too. If 1233236769Sobrien * a .DEFAULT was given, we substitute its commands for gn's 1234236769Sobrien * commands and set the IMPSRC variable to be the target's name 1235236769Sobrien * The DEFAULT node acts like a transformation rule, in that 1236236769Sobrien * gn also inherits any attributes or sources attached to 1237236769Sobrien * .DEFAULT itself. 1238236769Sobrien */ 1239236769Sobrien Make_HandleUse(DEFAULT, gn); 1240236769Sobrien Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), gn, 0); 1241236769Sobrien if (p1) 1242236769Sobrien free(p1); 1243236769Sobrien } else if (Dir_MTime(gn, 0) == 0 && (gn->type & OP_SPECIAL) == 0) { 1244236769Sobrien /* 1245236769Sobrien * The node wasn't the target of an operator we have no .DEFAULT 1246236769Sobrien * rule to go on and the target doesn't already exist. There's 1247236769Sobrien * nothing more we can do for this branch. If the -k flag wasn't 1248236769Sobrien * given, we stop in our tracks, otherwise we just don't update 1249236769Sobrien * this node's parents so they never get examined. 1250236769Sobrien */ 1251236769Sobrien static const char msg[] = ": don't know how to make"; 1252236769Sobrien 1253236769Sobrien if (gn->flags & FROM_DEPEND) { 1254236769Sobrien fprintf(stdout, "%s: ignoring stale %s for %s\n", 1255236769Sobrien progname, makeDependfile, gn->name); 1256236769Sobrien return TRUE; 1257236769Sobrien } 1258236769Sobrien 1259236769Sobrien if (gn->type & OP_OPTIONAL) { 1260236769Sobrien (void)fprintf(stdout, "%s%s %s (ignored)\n", progname, 1261236769Sobrien msg, gn->name); 1262236769Sobrien (void)fflush(stdout); 1263236769Sobrien } else if (keepgoing) { 1264236769Sobrien (void)fprintf(stdout, "%s%s %s (continuing)\n", progname, 1265236769Sobrien msg, gn->name); 1266236769Sobrien (void)fflush(stdout); 1267236769Sobrien return FALSE; 1268236769Sobrien } else { 1269236769Sobrien (*abortProc)("%s%s %s. Stop", progname, msg, gn->name); 1270236769Sobrien return FALSE; 1271236769Sobrien } 1272236769Sobrien } 1273236769Sobrien } 1274236769Sobrien return TRUE; 1275236769Sobrien} 1276236769Sobrien 1277236769Sobrien/*- 1278236769Sobrien *----------------------------------------------------------------------- 1279236769Sobrien * JobExec -- 1280236769Sobrien * Execute the shell for the given job. Called from JobStart 1281236769Sobrien * 1282236769Sobrien * Input: 1283236769Sobrien * job Job to execute 1284236769Sobrien * 1285236769Sobrien * Results: 1286236769Sobrien * None. 1287236769Sobrien * 1288236769Sobrien * Side Effects: 1289236769Sobrien * A shell is executed, outputs is altered and the Job structure added 1290236769Sobrien * to the job table. 1291236769Sobrien * 1292236769Sobrien *----------------------------------------------------------------------- 1293236769Sobrien */ 1294236769Sobrienstatic void 1295236769SobrienJobExec(Job *job, char **argv) 1296236769Sobrien{ 1297236769Sobrien int cpid; /* ID of new child */ 1298236769Sobrien sigset_t mask; 1299236769Sobrien 1300236769Sobrien job->flags &= ~JOB_TRACED; 1301236769Sobrien 1302236769Sobrien if (DEBUG(JOB)) { 1303236769Sobrien int i; 1304236769Sobrien 1305236769Sobrien (void)fprintf(debug_file, "Running %s %sly\n", job->node->name, "local"); 1306236769Sobrien (void)fprintf(debug_file, "\tCommand: "); 1307236769Sobrien for (i = 0; argv[i] != NULL; i++) { 1308236769Sobrien (void)fprintf(debug_file, "%s ", argv[i]); 1309236769Sobrien } 1310236769Sobrien (void)fprintf(debug_file, "\n"); 1311236769Sobrien } 1312236769Sobrien 1313236769Sobrien /* 1314236769Sobrien * Some jobs produce no output and it's disconcerting to have 1315236769Sobrien * no feedback of their running (since they produce no output, the 1316236769Sobrien * banner with their name in it never appears). This is an attempt to 1317236769Sobrien * provide that feedback, even if nothing follows it. 1318236769Sobrien */ 1319236769Sobrien if ((lastNode != job->node) && !(job->flags & JOB_SILENT)) { 1320236769Sobrien MESSAGE(stdout, job->node); 1321236769Sobrien lastNode = job->node; 1322236769Sobrien } 1323236769Sobrien 1324236769Sobrien /* No interruptions until this job is on the `jobs' list */ 1325236769Sobrien JobSigLock(&mask); 1326236769Sobrien 1327236769Sobrien /* Pre-emptively mark job running, pid still zero though */ 1328236769Sobrien job->job_state = JOB_ST_RUNNING; 1329236769Sobrien 1330236769Sobrien cpid = vFork(); 1331236769Sobrien if (cpid == -1) 1332236769Sobrien Punt("Cannot vfork: %s", strerror(errno)); 1333236769Sobrien 1334236769Sobrien if (cpid == 0) { 1335236769Sobrien /* Child */ 1336236769Sobrien sigset_t tmask; 1337236769Sobrien 1338236769Sobrien#ifdef USE_META 1339236769Sobrien if (useMeta) { 1340236769Sobrien meta_job_child(job); 1341236769Sobrien } 1342236769Sobrien#endif 1343236769Sobrien /* 1344236769Sobrien * Reset all signal handlers; this is necessary because we also 1345236769Sobrien * need to unblock signals before we exec(2). 1346236769Sobrien */ 1347236769Sobrien JobSigReset(); 1348236769Sobrien 1349236769Sobrien /* Now unblock signals */ 1350236769Sobrien sigemptyset(&tmask); 1351236769Sobrien JobSigUnlock(&tmask); 1352236769Sobrien 1353236769Sobrien /* 1354236769Sobrien * Must duplicate the input stream down to the child's input and 1355236769Sobrien * reset it to the beginning (again). Since the stream was marked 1356236769Sobrien * close-on-exec, we must clear that bit in the new input. 1357236769Sobrien */ 1358236769Sobrien if (dup2(FILENO(job->cmdFILE), 0) == -1) { 1359236769Sobrien execError("dup2", "job->cmdFILE"); 1360236769Sobrien _exit(1); 1361236769Sobrien } 1362236769Sobrien (void)fcntl(0, F_SETFD, 0); 1363236769Sobrien (void)lseek(0, (off_t)0, SEEK_SET); 1364236769Sobrien 1365236769Sobrien if (job->node->type & OP_MAKE) { 1366236769Sobrien /* 1367236769Sobrien * Pass job token pipe to submakes. 1368236769Sobrien */ 1369236769Sobrien fcntl(tokenWaitJob.inPipe, F_SETFD, 0); 1370236769Sobrien fcntl(tokenWaitJob.outPipe, F_SETFD, 0); 1371236769Sobrien } 1372236769Sobrien 1373236769Sobrien /* 1374236769Sobrien * Set up the child's output to be routed through the pipe 1375236769Sobrien * we've created for it. 1376236769Sobrien */ 1377236769Sobrien if (dup2(job->outPipe, 1) == -1) { 1378236769Sobrien execError("dup2", "job->outPipe"); 1379236769Sobrien _exit(1); 1380236769Sobrien } 1381236769Sobrien /* 1382236769Sobrien * The output channels are marked close on exec. This bit was 1383236769Sobrien * duplicated by the dup2(on some systems), so we have to clear 1384236769Sobrien * it before routing the shell's error output to the same place as 1385236769Sobrien * its standard output. 1386236769Sobrien */ 1387236769Sobrien (void)fcntl(1, F_SETFD, 0); 1388236769Sobrien if (dup2(1, 2) == -1) { 1389236769Sobrien execError("dup2", "1, 2"); 1390236769Sobrien _exit(1); 1391236769Sobrien } 1392236769Sobrien 1393236769Sobrien /* 1394236769Sobrien * We want to switch the child into a different process family so 1395236769Sobrien * we can kill it and all its descendants in one fell swoop, 1396236769Sobrien * by killing its process family, but not commit suicide. 1397236769Sobrien */ 1398236769Sobrien#if defined(HAVE_SETPGID) 1399236769Sobrien (void)setpgid(0, getpid()); 1400236769Sobrien#else 1401236769Sobrien#if defined(HAVE_SETSID) 1402236769Sobrien /* XXX: dsl - I'm sure this should be setpgrp()... */ 1403236769Sobrien (void)setsid(); 1404236769Sobrien#else 1405236769Sobrien (void)setpgrp(0, getpid()); 1406236769Sobrien#endif 1407236769Sobrien#endif 1408236769Sobrien 1409236769Sobrien Var_ExportVars(); 1410236769Sobrien 1411236769Sobrien (void)execv(shellPath, argv); 1412236769Sobrien execError("exec", shellPath); 1413236769Sobrien _exit(1); 1414236769Sobrien } 1415236769Sobrien 1416236769Sobrien /* Parent, continuing after the child exec */ 1417236769Sobrien job->pid = cpid; 1418236769Sobrien 1419236769Sobrien Trace_Log(JOBSTART, job); 1420236769Sobrien 1421236769Sobrien /* 1422236769Sobrien * Set the current position in the buffer to the beginning 1423236769Sobrien * and mark another stream to watch in the outputs mask 1424236769Sobrien */ 1425236769Sobrien job->curPos = 0; 1426236769Sobrien 1427236769Sobrien watchfd(job); 1428236769Sobrien 1429236769Sobrien if (job->cmdFILE != NULL && job->cmdFILE != stdout) { 1430236769Sobrien (void)fclose(job->cmdFILE); 1431236769Sobrien job->cmdFILE = NULL; 1432236769Sobrien } 1433236769Sobrien 1434236769Sobrien /* 1435236769Sobrien * Now the job is actually running, add it to the table. 1436236769Sobrien */ 1437236769Sobrien if (DEBUG(JOB)) { 1438236769Sobrien fprintf(debug_file, "JobExec(%s): pid %d added to jobs table\n", 1439236769Sobrien job->node->name, job->pid); 1440236769Sobrien job_table_dump("job started"); 1441236769Sobrien } 1442236769Sobrien JobSigUnlock(&mask); 1443236769Sobrien} 1444236769Sobrien 1445236769Sobrien/*- 1446236769Sobrien *----------------------------------------------------------------------- 1447236769Sobrien * JobMakeArgv -- 1448236769Sobrien * Create the argv needed to execute the shell for a given job. 1449236769Sobrien * 1450236769Sobrien * 1451236769Sobrien * Results: 1452236769Sobrien * 1453236769Sobrien * Side Effects: 1454236769Sobrien * 1455236769Sobrien *----------------------------------------------------------------------- 1456236769Sobrien */ 1457236769Sobrienstatic void 1458236769SobrienJobMakeArgv(Job *job, char **argv) 1459236769Sobrien{ 1460236769Sobrien int argc; 1461236769Sobrien static char args[10]; /* For merged arguments */ 1462236769Sobrien 1463236769Sobrien argv[0] = UNCONST(shellName); 1464236769Sobrien argc = 1; 1465236769Sobrien 1466236769Sobrien if ((commandShell->exit && (*commandShell->exit != '-')) || 1467236769Sobrien (commandShell->echo && (*commandShell->echo != '-'))) 1468236769Sobrien { 1469236769Sobrien /* 1470236769Sobrien * At least one of the flags doesn't have a minus before it, so 1471236769Sobrien * merge them together. Have to do this because the *(&(@*#*&#$# 1472236769Sobrien * Bourne shell thinks its second argument is a file to source. 1473236769Sobrien * Grrrr. Note the ten-character limitation on the combined arguments. 1474236769Sobrien */ 1475236769Sobrien (void)snprintf(args, sizeof(args), "-%s%s", 1476236769Sobrien ((job->flags & JOB_IGNERR) ? "" : 1477236769Sobrien (commandShell->exit ? commandShell->exit : "")), 1478236769Sobrien ((job->flags & JOB_SILENT) ? "" : 1479236769Sobrien (commandShell->echo ? commandShell->echo : ""))); 1480236769Sobrien 1481236769Sobrien if (args[1]) { 1482236769Sobrien argv[argc] = args; 1483236769Sobrien argc++; 1484236769Sobrien } 1485236769Sobrien } else { 1486236769Sobrien if (!(job->flags & JOB_IGNERR) && commandShell->exit) { 1487236769Sobrien argv[argc] = UNCONST(commandShell->exit); 1488236769Sobrien argc++; 1489236769Sobrien } 1490236769Sobrien if (!(job->flags & JOB_SILENT) && commandShell->echo) { 1491236769Sobrien argv[argc] = UNCONST(commandShell->echo); 1492236769Sobrien argc++; 1493236769Sobrien } 1494236769Sobrien } 1495236769Sobrien argv[argc] = NULL; 1496236769Sobrien} 1497236769Sobrien 1498236769Sobrien/*- 1499236769Sobrien *----------------------------------------------------------------------- 1500236769Sobrien * JobStart -- 1501236769Sobrien * Start a target-creation process going for the target described 1502236769Sobrien * by the graph node gn. 1503236769Sobrien * 1504236769Sobrien * Input: 1505236769Sobrien * gn target to create 1506236769Sobrien * flags flags for the job to override normal ones. 1507236769Sobrien * e.g. JOB_SPECIAL or JOB_IGNDOTS 1508236769Sobrien * previous The previous Job structure for this node, if any. 1509236769Sobrien * 1510236769Sobrien * Results: 1511236769Sobrien * JOB_ERROR if there was an error in the commands, JOB_FINISHED 1512236769Sobrien * if there isn't actually anything left to do for the job and 1513236769Sobrien * JOB_RUNNING if the job has been started. 1514236769Sobrien * 1515236769Sobrien * Side Effects: 1516236769Sobrien * A new Job node is created and added to the list of running 1517236769Sobrien * jobs. PMake is forked and a child shell created. 1518236769Sobrien * 1519236769Sobrien * NB: I'm fairly sure that this code is never called with JOB_SPECIAL set 1520236769Sobrien * JOB_IGNDOTS is never set (dsl) 1521236769Sobrien * Also the return value is ignored by everyone. 1522236769Sobrien *----------------------------------------------------------------------- 1523236769Sobrien */ 1524236769Sobrienstatic int 1525236769SobrienJobStart(GNode *gn, int flags) 1526236769Sobrien{ 1527236769Sobrien Job *job; /* new job descriptor */ 1528236769Sobrien char *argv[10]; /* Argument vector to shell */ 1529236769Sobrien Boolean cmdsOK; /* true if the nodes commands were all right */ 1530236769Sobrien Boolean noExec; /* Set true if we decide not to run the job */ 1531236769Sobrien int tfd; /* File descriptor to the temp file */ 1532236769Sobrien 1533236769Sobrien for (job = job_table; job < job_table_end; job++) { 1534236769Sobrien if (job->job_state == JOB_ST_FREE) 1535236769Sobrien break; 1536236769Sobrien } 1537236769Sobrien if (job >= job_table_end) 1538236769Sobrien Punt("JobStart no job slots vacant"); 1539236769Sobrien 1540236769Sobrien memset(job, 0, sizeof *job); 1541236769Sobrien job->job_state = JOB_ST_SETUP; 1542236769Sobrien if (gn->type & OP_SPECIAL) 1543236769Sobrien flags |= JOB_SPECIAL; 1544236769Sobrien 1545236769Sobrien job->node = gn; 1546236769Sobrien job->tailCmds = NULL; 1547236769Sobrien 1548236769Sobrien /* 1549236769Sobrien * Set the initial value of the flags for this job based on the global 1550236769Sobrien * ones and the node's attributes... Any flags supplied by the caller 1551236769Sobrien * are also added to the field. 1552236769Sobrien */ 1553236769Sobrien job->flags = 0; 1554236769Sobrien if (Targ_Ignore(gn)) { 1555236769Sobrien job->flags |= JOB_IGNERR; 1556236769Sobrien } 1557236769Sobrien if (Targ_Silent(gn)) { 1558236769Sobrien job->flags |= JOB_SILENT; 1559236769Sobrien } 1560236769Sobrien job->flags |= flags; 1561236769Sobrien 1562236769Sobrien /* 1563236769Sobrien * Check the commands now so any attributes from .DEFAULT have a chance 1564236769Sobrien * to migrate to the node 1565236769Sobrien */ 1566236769Sobrien cmdsOK = Job_CheckCommands(gn, Error); 1567236769Sobrien 1568236769Sobrien job->inPollfd = NULL; 1569236769Sobrien /* 1570236769Sobrien * If the -n flag wasn't given, we open up OUR (not the child's) 1571236769Sobrien * temporary file to stuff commands in it. The thing is rd/wr so we don't 1572236769Sobrien * need to reopen it to feed it to the shell. If the -n flag *was* given, 1573236769Sobrien * we just set the file to be stdout. Cute, huh? 1574236769Sobrien */ 1575236769Sobrien if (((gn->type & OP_MAKE) && !(noRecursiveExecute)) || 1576236769Sobrien (!noExecute && !touchFlag)) { 1577236769Sobrien /* 1578236769Sobrien * tfile is the name of a file into which all shell commands are 1579236769Sobrien * put. It is removed before the child shell is executed, unless 1580236769Sobrien * DEBUG(SCRIPT) is set. 1581236769Sobrien */ 1582236769Sobrien char *tfile; 1583236769Sobrien sigset_t mask; 1584236769Sobrien /* 1585236769Sobrien * We're serious here, but if the commands were bogus, we're 1586236769Sobrien * also dead... 1587236769Sobrien */ 1588236769Sobrien if (!cmdsOK) { 1589236769Sobrien PrintOnError(gn, NULL); /* provide some clue */ 1590236769Sobrien DieHorribly(); 1591236769Sobrien } 1592236769Sobrien 1593236769Sobrien JobSigLock(&mask); 1594236769Sobrien tfd = mkTempFile(TMPPAT, &tfile); 1595236769Sobrien if (!DEBUG(SCRIPT)) 1596236769Sobrien (void)eunlink(tfile); 1597236769Sobrien JobSigUnlock(&mask); 1598236769Sobrien 1599236769Sobrien job->cmdFILE = fdopen(tfd, "w+"); 1600236769Sobrien if (job->cmdFILE == NULL) { 1601236769Sobrien Punt("Could not fdopen %s", tfile); 1602236769Sobrien } 1603236769Sobrien (void)fcntl(FILENO(job->cmdFILE), F_SETFD, 1); 1604236769Sobrien /* 1605236769Sobrien * Send the commands to the command file, flush all its buffers then 1606236769Sobrien * rewind and remove the thing. 1607236769Sobrien */ 1608236769Sobrien noExec = FALSE; 1609236769Sobrien 1610236769Sobrien#ifdef USE_META 1611236769Sobrien if (useMeta) { 1612236769Sobrien meta_job_start(job, gn); 1613236769Sobrien if (Targ_Silent(gn)) { /* might have changed */ 1614236769Sobrien job->flags |= JOB_SILENT; 1615236769Sobrien } 1616236769Sobrien } 1617236769Sobrien#endif 1618236769Sobrien /* 1619236769Sobrien * We can do all the commands at once. hooray for sanity 1620236769Sobrien */ 1621236769Sobrien numCommands = 0; 1622236769Sobrien Lst_ForEach(gn->commands, JobPrintCommand, job); 1623236769Sobrien 1624236769Sobrien /* 1625236769Sobrien * If we didn't print out any commands to the shell script, 1626236769Sobrien * there's not much point in executing the shell, is there? 1627236769Sobrien */ 1628236769Sobrien if (numCommands == 0) { 1629236769Sobrien noExec = TRUE; 1630236769Sobrien } 1631236769Sobrien 1632236769Sobrien free(tfile); 1633236769Sobrien } else if (NoExecute(gn)) { 1634236769Sobrien /* 1635236769Sobrien * Not executing anything -- just print all the commands to stdout 1636236769Sobrien * in one fell swoop. This will still set up job->tailCmds correctly. 1637236769Sobrien */ 1638236769Sobrien if (lastNode != gn) { 1639236769Sobrien MESSAGE(stdout, gn); 1640236769Sobrien lastNode = gn; 1641236769Sobrien } 1642236769Sobrien job->cmdFILE = stdout; 1643236769Sobrien /* 1644236769Sobrien * Only print the commands if they're ok, but don't die if they're 1645236769Sobrien * not -- just let the user know they're bad and keep going. It 1646236769Sobrien * doesn't do any harm in this case and may do some good. 1647236769Sobrien */ 1648236769Sobrien if (cmdsOK) { 1649236769Sobrien Lst_ForEach(gn->commands, JobPrintCommand, job); 1650236769Sobrien } 1651236769Sobrien /* 1652236769Sobrien * Don't execute the shell, thank you. 1653236769Sobrien */ 1654236769Sobrien noExec = TRUE; 1655236769Sobrien } else { 1656236769Sobrien /* 1657236769Sobrien * Just touch the target and note that no shell should be executed. 1658236769Sobrien * Set cmdFILE to stdout to make life easier. Check the commands, too, 1659236769Sobrien * but don't die if they're no good -- it does no harm to keep working 1660236769Sobrien * up the graph. 1661236769Sobrien */ 1662236769Sobrien job->cmdFILE = stdout; 1663236769Sobrien Job_Touch(gn, job->flags&JOB_SILENT); 1664236769Sobrien noExec = TRUE; 1665236769Sobrien } 1666236769Sobrien /* Just in case it isn't already... */ 1667236769Sobrien (void)fflush(job->cmdFILE); 1668236769Sobrien 1669236769Sobrien /* 1670236769Sobrien * If we're not supposed to execute a shell, don't. 1671236769Sobrien */ 1672236769Sobrien if (noExec) { 1673236769Sobrien if (!(job->flags & JOB_SPECIAL)) 1674236769Sobrien Job_TokenReturn(); 1675236769Sobrien /* 1676236769Sobrien * Unlink and close the command file if we opened one 1677236769Sobrien */ 1678236769Sobrien if (job->cmdFILE != stdout) { 1679236769Sobrien if (job->cmdFILE != NULL) { 1680236769Sobrien (void)fclose(job->cmdFILE); 1681236769Sobrien job->cmdFILE = NULL; 1682236769Sobrien } 1683236769Sobrien } 1684236769Sobrien 1685236769Sobrien /* 1686236769Sobrien * We only want to work our way up the graph if we aren't here because 1687236769Sobrien * the commands for the job were no good. 1688236769Sobrien */ 1689236769Sobrien if (cmdsOK && aborting == 0) { 1690236769Sobrien if (job->tailCmds != NULL) { 1691236769Sobrien Lst_ForEachFrom(job->node->commands, job->tailCmds, 1692236769Sobrien JobSaveCommand, 1693236769Sobrien job->node); 1694236769Sobrien } 1695236769Sobrien job->node->made = MADE; 1696236769Sobrien Make_Update(job->node); 1697236769Sobrien } 1698236769Sobrien job->job_state = JOB_ST_FREE; 1699236769Sobrien return cmdsOK ? JOB_FINISHED : JOB_ERROR; 1700236769Sobrien } 1701236769Sobrien 1702236769Sobrien /* 1703236769Sobrien * Set up the control arguments to the shell. This is based on the flags 1704236769Sobrien * set earlier for this job. 1705236769Sobrien */ 1706236769Sobrien JobMakeArgv(job, argv); 1707236769Sobrien 1708236769Sobrien /* Create the pipe by which we'll get the shell's output. */ 1709236769Sobrien JobCreatePipe(job, 3); 1710236769Sobrien 1711236769Sobrien JobExec(job, argv); 1712236769Sobrien return(JOB_RUNNING); 1713236769Sobrien} 1714236769Sobrien 1715236769Sobrienstatic char * 1716236769SobrienJobOutput(Job *job, char *cp, char *endp, int msg) 1717236769Sobrien{ 1718236769Sobrien char *ecp; 1719236769Sobrien 1720236769Sobrien if (commandShell->noPrint) { 1721236769Sobrien ecp = Str_FindSubstring(cp, commandShell->noPrint); 1722236769Sobrien while (ecp != NULL) { 1723236769Sobrien if (cp != ecp) { 1724236769Sobrien *ecp = '\0'; 1725236769Sobrien if (!beSilent && msg && job->node != lastNode) { 1726236769Sobrien MESSAGE(stdout, job->node); 1727236769Sobrien lastNode = job->node; 1728236769Sobrien } 1729236769Sobrien /* 1730236769Sobrien * The only way there wouldn't be a newline after 1731236769Sobrien * this line is if it were the last in the buffer. 1732236769Sobrien * however, since the non-printable comes after it, 1733236769Sobrien * there must be a newline, so we don't print one. 1734236769Sobrien */ 1735236769Sobrien (void)fprintf(stdout, "%s", cp); 1736236769Sobrien (void)fflush(stdout); 1737236769Sobrien } 1738236769Sobrien cp = ecp + commandShell->noPLen; 1739236769Sobrien if (cp != endp) { 1740236769Sobrien /* 1741236769Sobrien * Still more to print, look again after skipping 1742236769Sobrien * the whitespace following the non-printable 1743236769Sobrien * command.... 1744236769Sobrien */ 1745236769Sobrien cp++; 1746236769Sobrien while (*cp == ' ' || *cp == '\t' || *cp == '\n') { 1747236769Sobrien cp++; 1748236769Sobrien } 1749236769Sobrien ecp = Str_FindSubstring(cp, commandShell->noPrint); 1750236769Sobrien } else { 1751236769Sobrien return cp; 1752236769Sobrien } 1753236769Sobrien } 1754236769Sobrien } 1755236769Sobrien return cp; 1756236769Sobrien} 1757236769Sobrien 1758236769Sobrien/*- 1759236769Sobrien *----------------------------------------------------------------------- 1760236769Sobrien * JobDoOutput -- 1761236769Sobrien * This function is called at different times depending on 1762236769Sobrien * whether the user has specified that output is to be collected 1763236769Sobrien * via pipes or temporary files. In the former case, we are called 1764236769Sobrien * whenever there is something to read on the pipe. We collect more 1765236769Sobrien * output from the given job and store it in the job's outBuf. If 1766236769Sobrien * this makes up a line, we print it tagged by the job's identifier, 1767236769Sobrien * as necessary. 1768236769Sobrien * If output has been collected in a temporary file, we open the 1769236769Sobrien * file and read it line by line, transfering it to our own 1770236769Sobrien * output channel until the file is empty. At which point we 1771236769Sobrien * remove the temporary file. 1772236769Sobrien * In both cases, however, we keep our figurative eye out for the 1773236769Sobrien * 'noPrint' line for the shell from which the output came. If 1774236769Sobrien * we recognize a line, we don't print it. If the command is not 1775236769Sobrien * alone on the line (the character after it is not \0 or \n), we 1776236769Sobrien * do print whatever follows it. 1777236769Sobrien * 1778236769Sobrien * Input: 1779236769Sobrien * job the job whose output needs printing 1780236769Sobrien * finish TRUE if this is the last time we'll be called 1781236769Sobrien * for this job 1782236769Sobrien * 1783236769Sobrien * Results: 1784236769Sobrien * None 1785236769Sobrien * 1786236769Sobrien * Side Effects: 1787236769Sobrien * curPos may be shifted as may the contents of outBuf. 1788236769Sobrien *----------------------------------------------------------------------- 1789236769Sobrien */ 1790236769SobrienSTATIC void 1791236769SobrienJobDoOutput(Job *job, Boolean finish) 1792236769Sobrien{ 1793236769Sobrien Boolean gotNL = FALSE; /* true if got a newline */ 1794236769Sobrien Boolean fbuf; /* true if our buffer filled up */ 1795236769Sobrien int nr; /* number of bytes read */ 1796236769Sobrien int i; /* auxiliary index into outBuf */ 1797236769Sobrien int max; /* limit for i (end of current data) */ 1798236769Sobrien int nRead; /* (Temporary) number of bytes read */ 1799236769Sobrien 1800236769Sobrien /* 1801236769Sobrien * Read as many bytes as will fit in the buffer. 1802236769Sobrien */ 1803236769Sobrienend_loop: 1804236769Sobrien gotNL = FALSE; 1805236769Sobrien fbuf = FALSE; 1806236769Sobrien 1807236769Sobrien nRead = read(job->inPipe, &job->outBuf[job->curPos], 1808236769Sobrien JOB_BUFSIZE - job->curPos); 1809236769Sobrien if (nRead < 0) { 1810236769Sobrien if (errno == EAGAIN) 1811236769Sobrien return; 1812236769Sobrien if (DEBUG(JOB)) { 1813236769Sobrien perror("JobDoOutput(piperead)"); 1814236769Sobrien } 1815236769Sobrien nr = 0; 1816236769Sobrien } else { 1817236769Sobrien nr = nRead; 1818236769Sobrien } 1819236769Sobrien 1820236769Sobrien /* 1821236769Sobrien * If we hit the end-of-file (the job is dead), we must flush its 1822236769Sobrien * remaining output, so pretend we read a newline if there's any 1823236769Sobrien * output remaining in the buffer. 1824236769Sobrien * Also clear the 'finish' flag so we stop looping. 1825236769Sobrien */ 1826236769Sobrien if ((nr == 0) && (job->curPos != 0)) { 1827236769Sobrien job->outBuf[job->curPos] = '\n'; 1828236769Sobrien nr = 1; 1829236769Sobrien finish = FALSE; 1830236769Sobrien } else if (nr == 0) { 1831236769Sobrien finish = FALSE; 1832236769Sobrien } 1833236769Sobrien 1834236769Sobrien /* 1835236769Sobrien * Look for the last newline in the bytes we just got. If there is 1836236769Sobrien * one, break out of the loop with 'i' as its index and gotNL set 1837236769Sobrien * TRUE. 1838236769Sobrien */ 1839236769Sobrien max = job->curPos + nr; 1840236769Sobrien for (i = job->curPos + nr - 1; i >= job->curPos; i--) { 1841236769Sobrien if (job->outBuf[i] == '\n') { 1842236769Sobrien gotNL = TRUE; 1843236769Sobrien break; 1844236769Sobrien } else if (job->outBuf[i] == '\0') { 1845236769Sobrien /* 1846236769Sobrien * Why? 1847236769Sobrien */ 1848236769Sobrien job->outBuf[i] = ' '; 1849236769Sobrien } 1850236769Sobrien } 1851236769Sobrien 1852236769Sobrien if (!gotNL) { 1853236769Sobrien job->curPos += nr; 1854236769Sobrien if (job->curPos == JOB_BUFSIZE) { 1855236769Sobrien /* 1856236769Sobrien * If we've run out of buffer space, we have no choice 1857236769Sobrien * but to print the stuff. sigh. 1858236769Sobrien */ 1859236769Sobrien fbuf = TRUE; 1860236769Sobrien i = job->curPos; 1861236769Sobrien } 1862236769Sobrien } 1863236769Sobrien if (gotNL || fbuf) { 1864236769Sobrien /* 1865236769Sobrien * Need to send the output to the screen. Null terminate it 1866236769Sobrien * first, overwriting the newline character if there was one. 1867236769Sobrien * So long as the line isn't one we should filter (according 1868236769Sobrien * to the shell description), we print the line, preceded 1869236769Sobrien * by a target banner if this target isn't the same as the 1870236769Sobrien * one for which we last printed something. 1871236769Sobrien * The rest of the data in the buffer are then shifted down 1872236769Sobrien * to the start of the buffer and curPos is set accordingly. 1873236769Sobrien */ 1874236769Sobrien job->outBuf[i] = '\0'; 1875236769Sobrien if (i >= job->curPos) { 1876236769Sobrien char *cp; 1877236769Sobrien 1878236769Sobrien cp = JobOutput(job, job->outBuf, &job->outBuf[i], FALSE); 1879236769Sobrien 1880236769Sobrien /* 1881236769Sobrien * There's still more in that thar buffer. This time, though, 1882236769Sobrien * we know there's no newline at the end, so we add one of 1883236769Sobrien * our own free will. 1884236769Sobrien */ 1885236769Sobrien if (*cp != '\0') { 1886236769Sobrien if (!beSilent && job->node != lastNode) { 1887236769Sobrien MESSAGE(stdout, job->node); 1888236769Sobrien lastNode = job->node; 1889236769Sobrien } 1890236769Sobrien#ifdef USE_META 1891236769Sobrien if (useMeta) { 1892236769Sobrien meta_job_output(job, cp, gotNL ? "\n" : ""); 1893236769Sobrien } 1894236769Sobrien#endif 1895236769Sobrien (void)fprintf(stdout, "%s%s", cp, gotNL ? "\n" : ""); 1896236769Sobrien (void)fflush(stdout); 1897236769Sobrien } 1898236769Sobrien } 1899236769Sobrien if (i < max - 1) { 1900236769Sobrien /* shift the remaining characters down */ 1901236769Sobrien (void)memcpy(job->outBuf, &job->outBuf[i + 1], max - (i + 1)); 1902236769Sobrien job->curPos = max - (i + 1); 1903236769Sobrien 1904236769Sobrien } else { 1905236769Sobrien /* 1906236769Sobrien * We have written everything out, so we just start over 1907236769Sobrien * from the start of the buffer. No copying. No nothing. 1908236769Sobrien */ 1909236769Sobrien job->curPos = 0; 1910236769Sobrien } 1911236769Sobrien } 1912236769Sobrien if (finish) { 1913236769Sobrien /* 1914236769Sobrien * If the finish flag is true, we must loop until we hit 1915236769Sobrien * end-of-file on the pipe. This is guaranteed to happen 1916236769Sobrien * eventually since the other end of the pipe is now closed 1917236769Sobrien * (we closed it explicitly and the child has exited). When 1918236769Sobrien * we do get an EOF, finish will be set FALSE and we'll fall 1919236769Sobrien * through and out. 1920236769Sobrien */ 1921236769Sobrien goto end_loop; 1922236769Sobrien } 1923236769Sobrien} 1924236769Sobrien 1925236769Sobrienstatic void 1926236769SobrienJobRun(GNode *targ) 1927236769Sobrien{ 1928236769Sobrien#ifdef notyet 1929236769Sobrien /* 1930236769Sobrien * Unfortunately it is too complicated to run .BEGIN, .END, 1931236769Sobrien * and .INTERRUPT job in the parallel job module. This has 1932236769Sobrien * the nice side effect that it avoids a lot of other problems. 1933236769Sobrien */ 1934236769Sobrien Lst lst = Lst_Init(FALSE); 1935236769Sobrien Lst_AtEnd(lst, targ); 1936236769Sobrien (void)Make_Run(lst); 1937236769Sobrien Lst_Destroy(lst, NULL); 1938236769Sobrien JobStart(targ, JOB_SPECIAL); 1939236769Sobrien while (jobTokensRunning) { 1940236769Sobrien Job_CatchOutput(); 1941236769Sobrien } 1942236769Sobrien#else 1943236769Sobrien Compat_Make(targ, targ); 1944236769Sobrien if (targ->made == ERROR) { 1945236769Sobrien PrintOnError(targ, "\n\nStop."); 1946236769Sobrien exit(1); 1947236769Sobrien } 1948236769Sobrien#endif 1949236769Sobrien} 1950236769Sobrien 1951236769Sobrien/*- 1952236769Sobrien *----------------------------------------------------------------------- 1953236769Sobrien * Job_CatchChildren -- 1954236769Sobrien * Handle the exit of a child. Called from Make_Make. 1955236769Sobrien * 1956236769Sobrien * Input: 1957236769Sobrien * block TRUE if should block on the wait 1958236769Sobrien * 1959236769Sobrien * Results: 1960236769Sobrien * none. 1961236769Sobrien * 1962236769Sobrien * Side Effects: 1963236769Sobrien * The job descriptor is removed from the list of children. 1964236769Sobrien * 1965236769Sobrien * Notes: 1966236769Sobrien * We do waits, blocking or not, according to the wisdom of our 1967236769Sobrien * caller, until there are no more children to report. For each 1968236769Sobrien * job, call JobFinish to finish things off. 1969236769Sobrien * 1970236769Sobrien *----------------------------------------------------------------------- 1971236769Sobrien */ 1972236769Sobrien 1973236769Sobrienvoid 1974236769SobrienJob_CatchChildren(void) 1975236769Sobrien{ 1976236769Sobrien int pid; /* pid of dead child */ 1977236769Sobrien WAIT_T status; /* Exit/termination status */ 1978236769Sobrien 1979236769Sobrien /* 1980236769Sobrien * Don't even bother if we know there's no one around. 1981236769Sobrien */ 1982236769Sobrien if (jobTokensRunning == 0) 1983236769Sobrien return; 1984236769Sobrien 1985236769Sobrien while ((pid = waitpid((pid_t) -1, &status, WNOHANG | WUNTRACED)) > 0) { 1986236769Sobrien if (DEBUG(JOB)) { 1987236769Sobrien (void)fprintf(debug_file, "Process %d exited/stopped status %x.\n", pid, 1988236769Sobrien WAIT_STATUS(status)); 1989236769Sobrien } 1990236769Sobrien JobReapChild(pid, status, TRUE); 1991236769Sobrien } 1992236769Sobrien} 1993236769Sobrien 1994236769Sobrien/* 1995236769Sobrien * It is possible that wait[pid]() was called from elsewhere, 1996236769Sobrien * this lets us reap jobs regardless. 1997236769Sobrien */ 1998236769Sobrienvoid 1999236769SobrienJobReapChild(pid_t pid, WAIT_T status, Boolean isJobs) 2000236769Sobrien{ 2001236769Sobrien Job *job; /* job descriptor for dead child */ 2002236769Sobrien 2003236769Sobrien /* 2004236769Sobrien * Don't even bother if we know there's no one around. 2005236769Sobrien */ 2006236769Sobrien if (jobTokensRunning == 0) 2007236769Sobrien return; 2008236769Sobrien 2009236769Sobrien job = JobFindPid(pid, JOB_ST_RUNNING, isJobs); 2010236769Sobrien if (job == NULL) { 2011236769Sobrien if (isJobs) { 2012236769Sobrien if (!lurking_children) 2013236769Sobrien Error("Child (%d) status %x not in table?", pid, status); 2014236769Sobrien } 2015236769Sobrien return; /* not ours */ 2016236769Sobrien } 2017236769Sobrien if (WIFSTOPPED(status)) { 2018236769Sobrien if (DEBUG(JOB)) { 2019236769Sobrien (void)fprintf(debug_file, "Process %d (%s) stopped.\n", 2020236769Sobrien job->pid, job->node->name); 2021236769Sobrien } 2022236769Sobrien if (!make_suspended) { 2023236769Sobrien switch (WSTOPSIG(status)) { 2024236769Sobrien case SIGTSTP: 2025236769Sobrien (void)printf("*** [%s] Suspended\n", job->node->name); 2026236769Sobrien break; 2027236769Sobrien case SIGSTOP: 2028236769Sobrien (void)printf("*** [%s] Stopped\n", job->node->name); 2029236769Sobrien break; 2030236769Sobrien default: 2031236769Sobrien (void)printf("*** [%s] Stopped -- signal %d\n", 2032236769Sobrien job->node->name, WSTOPSIG(status)); 2033236769Sobrien } 2034236769Sobrien job->job_suspended = 1; 2035236769Sobrien } 2036236769Sobrien (void)fflush(stdout); 2037236769Sobrien return; 2038236769Sobrien } 2039236769Sobrien 2040236769Sobrien job->job_state = JOB_ST_FINISHED; 2041236769Sobrien job->exit_status = WAIT_STATUS(status); 2042236769Sobrien 2043236769Sobrien JobFinish(job, status); 2044236769Sobrien} 2045236769Sobrien 2046236769Sobrien/*- 2047236769Sobrien *----------------------------------------------------------------------- 2048236769Sobrien * Job_CatchOutput -- 2049236769Sobrien * Catch the output from our children, if we're using 2050236769Sobrien * pipes do so. Otherwise just block time until we get a 2051236769Sobrien * signal(most likely a SIGCHLD) since there's no point in 2052236769Sobrien * just spinning when there's nothing to do and the reaping 2053236769Sobrien * of a child can wait for a while. 2054236769Sobrien * 2055236769Sobrien * Results: 2056236769Sobrien * None 2057236769Sobrien * 2058236769Sobrien * Side Effects: 2059236769Sobrien * Output is read from pipes if we're piping. 2060236769Sobrien * ----------------------------------------------------------------------- 2061236769Sobrien */ 2062236769Sobrienvoid 2063236769SobrienJob_CatchOutput(void) 2064236769Sobrien{ 2065236769Sobrien int nready; 2066236769Sobrien Job *job; 2067236769Sobrien int i; 2068236769Sobrien 2069236769Sobrien (void)fflush(stdout); 2070236769Sobrien 2071236769Sobrien /* The first fd in the list is the job token pipe */ 2072236769Sobrien nready = poll(fds + 1 - wantToken, nfds - 1 + wantToken, POLL_MSEC); 2073236769Sobrien 2074236769Sobrien if (nready < 0 || readyfd(&childExitJob)) { 2075236769Sobrien char token = 0; 2076236769Sobrien nready -= 1; 2077236769Sobrien (void)read(childExitJob.inPipe, &token, 1); 2078236769Sobrien if (token == DO_JOB_RESUME[0]) 2079236769Sobrien /* Complete relay requested from our SIGCONT handler */ 2080236769Sobrien JobRestartJobs(); 2081236769Sobrien Job_CatchChildren(); 2082236769Sobrien } 2083236769Sobrien 2084236769Sobrien if (nready <= 0) 2085236769Sobrien return; 2086236769Sobrien 2087236769Sobrien if (wantToken && readyfd(&tokenWaitJob)) 2088236769Sobrien nready--; 2089236769Sobrien 2090236769Sobrien for (i = 2; i < nfds; i++) { 2091236769Sobrien if (!fds[i].revents) 2092236769Sobrien continue; 2093236769Sobrien job = jobfds[i]; 2094236769Sobrien if (job->job_state != JOB_ST_RUNNING) 2095236769Sobrien continue; 2096236769Sobrien JobDoOutput(job, FALSE); 2097236769Sobrien } 2098236769Sobrien} 2099236769Sobrien 2100236769Sobrien/*- 2101236769Sobrien *----------------------------------------------------------------------- 2102236769Sobrien * Job_Make -- 2103236769Sobrien * Start the creation of a target. Basically a front-end for 2104236769Sobrien * JobStart used by the Make module. 2105236769Sobrien * 2106236769Sobrien * Results: 2107236769Sobrien * None. 2108236769Sobrien * 2109236769Sobrien * Side Effects: 2110236769Sobrien * Another job is started. 2111236769Sobrien * 2112236769Sobrien *----------------------------------------------------------------------- 2113236769Sobrien */ 2114236769Sobrienvoid 2115236769SobrienJob_Make(GNode *gn) 2116236769Sobrien{ 2117236769Sobrien (void)JobStart(gn, 0); 2118236769Sobrien} 2119236769Sobrien 2120236769Sobrienvoid 2121236769SobrienShell_Init(void) 2122236769Sobrien{ 2123236769Sobrien if (shellPath == NULL) { 2124236769Sobrien /* 2125236769Sobrien * We are using the default shell, which may be an absolute 2126236769Sobrien * path if DEFSHELL_CUSTOM is defined. 2127236769Sobrien */ 2128236769Sobrien shellName = commandShell->name; 2129236769Sobrien#ifdef DEFSHELL_CUSTOM 2130236769Sobrien if (*shellName == '/') { 2131236769Sobrien shellPath = shellName; 2132236769Sobrien shellName = strrchr(shellPath, '/'); 2133236769Sobrien shellName++; 2134236769Sobrien } else 2135236769Sobrien#endif 2136236769Sobrien shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH); 2137236769Sobrien } 2138236769Sobrien if (commandShell->exit == NULL) { 2139236769Sobrien commandShell->exit = ""; 2140236769Sobrien } 2141236769Sobrien if (commandShell->echo == NULL) { 2142236769Sobrien commandShell->echo = ""; 2143236769Sobrien } 2144236769Sobrien} 2145236769Sobrien 2146236769Sobrien/*- 2147236769Sobrien * Returns the string literal that is used in the current command shell 2148236769Sobrien * to produce a newline character. 2149236769Sobrien */ 2150236769Sobrienconst char * 2151236769SobrienShell_GetNewline(void) 2152236769Sobrien{ 2153236769Sobrien 2154236769Sobrien return commandShell->newline; 2155236769Sobrien} 2156236769Sobrien 2157236769Sobrienvoid 2158236769SobrienJob_SetPrefix(void) 2159236769Sobrien{ 2160236769Sobrien 2161236769Sobrien if (targPrefix) { 2162236769Sobrien free(targPrefix); 2163236769Sobrien } else if (!Var_Exists(MAKE_JOB_PREFIX, VAR_GLOBAL)) { 2164236769Sobrien Var_Set(MAKE_JOB_PREFIX, "---", VAR_GLOBAL, 0); 2165236769Sobrien } 2166236769Sobrien 2167236769Sobrien targPrefix = Var_Subst(NULL, "${" MAKE_JOB_PREFIX "}", VAR_GLOBAL, 0); 2168236769Sobrien} 2169236769Sobrien 2170236769Sobrien/*- 2171236769Sobrien *----------------------------------------------------------------------- 2172236769Sobrien * Job_Init -- 2173236769Sobrien * Initialize the process module 2174236769Sobrien * 2175236769Sobrien * Input: 2176236769Sobrien * 2177236769Sobrien * Results: 2178236769Sobrien * none 2179236769Sobrien * 2180236769Sobrien * Side Effects: 2181236769Sobrien * lists and counters are initialized 2182236769Sobrien *----------------------------------------------------------------------- 2183236769Sobrien */ 2184236769Sobrienvoid 2185236769SobrienJob_Init(void) 2186236769Sobrien{ 2187236769Sobrien GNode *begin; /* node for commands to do at the very start */ 2188236769Sobrien 2189236769Sobrien /* Allocate space for all the job info */ 2190236769Sobrien job_table = bmake_malloc(maxJobs * sizeof *job_table); 2191236769Sobrien memset(job_table, 0, maxJobs * sizeof *job_table); 2192236769Sobrien job_table_end = job_table + maxJobs; 2193236769Sobrien wantToken = 0; 2194236769Sobrien 2195236769Sobrien aborting = 0; 2196236769Sobrien errors = 0; 2197236769Sobrien 2198236769Sobrien lastNode = NULL; 2199236769Sobrien 2200236769Sobrien /* 2201236769Sobrien * There is a non-zero chance that we already have children. 2202236769Sobrien * eg after 'make -f- <<EOF' 2203236769Sobrien * Since their termination causes a 'Child (pid) not in table' message, 2204236769Sobrien * Collect the status of any that are already dead, and suppress the 2205236769Sobrien * error message if there are any undead ones. 2206236769Sobrien */ 2207236769Sobrien for (;;) { 2208236769Sobrien int rval, status; 2209236769Sobrien rval = waitpid((pid_t) -1, &status, WNOHANG); 2210236769Sobrien if (rval > 0) 2211236769Sobrien continue; 2212236769Sobrien if (rval == 0) 2213236769Sobrien lurking_children = 1; 2214236769Sobrien break; 2215236769Sobrien } 2216236769Sobrien 2217236769Sobrien Shell_Init(); 2218236769Sobrien 2219236769Sobrien JobCreatePipe(&childExitJob, 3); 2220236769Sobrien 2221236769Sobrien /* We can only need to wait for tokens, children and output from each job */ 2222236769Sobrien fds = bmake_malloc(sizeof (*fds) * (2 + maxJobs)); 2223236769Sobrien jobfds = bmake_malloc(sizeof (*jobfds) * (2 + maxJobs)); 2224236769Sobrien 2225236769Sobrien /* These are permanent entries and take slots 0 and 1 */ 2226236769Sobrien watchfd(&tokenWaitJob); 2227236769Sobrien watchfd(&childExitJob); 2228236769Sobrien 2229236769Sobrien sigemptyset(&caught_signals); 2230236769Sobrien /* 2231236769Sobrien * Install a SIGCHLD handler. 2232236769Sobrien */ 2233236769Sobrien (void)bmake_signal(SIGCHLD, JobChildSig); 2234236769Sobrien sigaddset(&caught_signals, SIGCHLD); 2235236769Sobrien 2236236769Sobrien#define ADDSIG(s,h) \ 2237236769Sobrien if (bmake_signal(s, SIG_IGN) != SIG_IGN) { \ 2238236769Sobrien sigaddset(&caught_signals, s); \ 2239236769Sobrien (void)bmake_signal(s, h); \ 2240236769Sobrien } 2241236769Sobrien 2242236769Sobrien /* 2243236769Sobrien * Catch the four signals that POSIX specifies if they aren't ignored. 2244236769Sobrien * JobPassSig will take care of calling JobInterrupt if appropriate. 2245236769Sobrien */ 2246236769Sobrien ADDSIG(SIGINT, JobPassSig_int) 2247236769Sobrien ADDSIG(SIGHUP, JobPassSig_term) 2248236769Sobrien ADDSIG(SIGTERM, JobPassSig_term) 2249236769Sobrien ADDSIG(SIGQUIT, JobPassSig_term) 2250236769Sobrien 2251236769Sobrien /* 2252236769Sobrien * There are additional signals that need to be caught and passed if 2253236769Sobrien * either the export system wants to be told directly of signals or if 2254236769Sobrien * we're giving each job its own process group (since then it won't get 2255236769Sobrien * signals from the terminal driver as we own the terminal) 2256236769Sobrien */ 2257236769Sobrien ADDSIG(SIGTSTP, JobPassSig_suspend) 2258236769Sobrien ADDSIG(SIGTTOU, JobPassSig_suspend) 2259236769Sobrien ADDSIG(SIGTTIN, JobPassSig_suspend) 2260236769Sobrien ADDSIG(SIGWINCH, JobCondPassSig) 2261236769Sobrien ADDSIG(SIGCONT, JobContinueSig) 2262236769Sobrien#undef ADDSIG 2263236769Sobrien 2264236769Sobrien begin = Targ_FindNode(".BEGIN", TARG_NOCREATE); 2265236769Sobrien 2266236769Sobrien if (begin != NULL) { 2267236769Sobrien JobRun(begin); 2268236769Sobrien if (begin->made == ERROR) { 2269236769Sobrien PrintOnError(begin, "\n\nStop."); 2270236769Sobrien exit(1); 2271236769Sobrien } 2272236769Sobrien } 2273236769Sobrien postCommands = Targ_FindNode(".END", TARG_CREATE); 2274236769Sobrien} 2275236769Sobrien 2276236769Sobrienstatic void JobSigReset(void) 2277236769Sobrien{ 2278236769Sobrien#define DELSIG(s) \ 2279236769Sobrien if (sigismember(&caught_signals, s)) { \ 2280236769Sobrien (void)bmake_signal(s, SIG_DFL); \ 2281236769Sobrien } 2282236769Sobrien 2283236769Sobrien DELSIG(SIGINT) 2284236769Sobrien DELSIG(SIGHUP) 2285236769Sobrien DELSIG(SIGQUIT) 2286236769Sobrien DELSIG(SIGTERM) 2287236769Sobrien DELSIG(SIGTSTP) 2288236769Sobrien DELSIG(SIGTTOU) 2289236769Sobrien DELSIG(SIGTTIN) 2290236769Sobrien DELSIG(SIGWINCH) 2291236769Sobrien DELSIG(SIGCONT) 2292236769Sobrien#undef DELSIG 2293236769Sobrien (void)bmake_signal(SIGCHLD, SIG_DFL); 2294236769Sobrien} 2295236769Sobrien 2296236769Sobrien/*- 2297236769Sobrien *----------------------------------------------------------------------- 2298236769Sobrien * JobMatchShell -- 2299236769Sobrien * Find a shell in 'shells' given its name. 2300236769Sobrien * 2301236769Sobrien * Results: 2302236769Sobrien * A pointer to the Shell structure. 2303236769Sobrien * 2304236769Sobrien * Side Effects: 2305236769Sobrien * None. 2306236769Sobrien * 2307236769Sobrien *----------------------------------------------------------------------- 2308236769Sobrien */ 2309236769Sobrienstatic Shell * 2310236769SobrienJobMatchShell(const char *name) 2311236769Sobrien{ 2312236769Sobrien Shell *sh; 2313236769Sobrien 2314236769Sobrien for (sh = shells; sh->name != NULL; sh++) { 2315236769Sobrien if (strcmp(name, sh->name) == 0) 2316236769Sobrien return (sh); 2317236769Sobrien } 2318236769Sobrien return NULL; 2319236769Sobrien} 2320236769Sobrien 2321236769Sobrien/*- 2322236769Sobrien *----------------------------------------------------------------------- 2323236769Sobrien * Job_ParseShell -- 2324236769Sobrien * Parse a shell specification and set up commandShell, shellPath 2325236769Sobrien * and shellName appropriately. 2326236769Sobrien * 2327236769Sobrien * Input: 2328236769Sobrien * line The shell spec 2329236769Sobrien * 2330236769Sobrien * Results: 2331236769Sobrien * FAILURE if the specification was incorrect. 2332236769Sobrien * 2333236769Sobrien * Side Effects: 2334236769Sobrien * commandShell points to a Shell structure (either predefined or 2335236769Sobrien * created from the shell spec), shellPath is the full path of the 2336236769Sobrien * shell described by commandShell, while shellName is just the 2337236769Sobrien * final component of shellPath. 2338236769Sobrien * 2339236769Sobrien * Notes: 2340236769Sobrien * A shell specification consists of a .SHELL target, with dependency 2341236769Sobrien * operator, followed by a series of blank-separated words. Double 2342236769Sobrien * quotes can be used to use blanks in words. A backslash escapes 2343236769Sobrien * anything (most notably a double-quote and a space) and 2344236769Sobrien * provides the functionality it does in C. Each word consists of 2345236769Sobrien * keyword and value separated by an equal sign. There should be no 2346236769Sobrien * unnecessary spaces in the word. The keywords are as follows: 2347236769Sobrien * name Name of shell. 2348236769Sobrien * path Location of shell. 2349236769Sobrien * quiet Command to turn off echoing. 2350236769Sobrien * echo Command to turn echoing on 2351236769Sobrien * filter Result of turning off echoing that shouldn't be 2352236769Sobrien * printed. 2353236769Sobrien * echoFlag Flag to turn echoing on at the start 2354236769Sobrien * errFlag Flag to turn error checking on at the start 2355236769Sobrien * hasErrCtl True if shell has error checking control 2356236769Sobrien * newline String literal to represent a newline char 2357236769Sobrien * check Command to turn on error checking if hasErrCtl 2358236769Sobrien * is TRUE or template of command to echo a command 2359236769Sobrien * for which error checking is off if hasErrCtl is 2360236769Sobrien * FALSE. 2361236769Sobrien * ignore Command to turn off error checking if hasErrCtl 2362236769Sobrien * is TRUE or template of command to execute a 2363236769Sobrien * command so as to ignore any errors it returns if 2364236769Sobrien * hasErrCtl is FALSE. 2365236769Sobrien * 2366236769Sobrien *----------------------------------------------------------------------- 2367236769Sobrien */ 2368236769SobrienReturnStatus 2369236769SobrienJob_ParseShell(char *line) 2370236769Sobrien{ 2371236769Sobrien char **words; 2372236769Sobrien char **argv; 2373236769Sobrien int argc; 2374236769Sobrien char *path; 2375236769Sobrien Shell newShell; 2376236769Sobrien Boolean fullSpec = FALSE; 2377236769Sobrien Shell *sh; 2378236769Sobrien 2379236769Sobrien while (isspace((unsigned char)*line)) { 2380236769Sobrien line++; 2381236769Sobrien } 2382236769Sobrien 2383236769Sobrien if (shellArgv) 2384236769Sobrien free(UNCONST(shellArgv)); 2385236769Sobrien 2386236769Sobrien memset(&newShell, 0, sizeof(newShell)); 2387236769Sobrien 2388236769Sobrien /* 2389236769Sobrien * Parse the specification by keyword 2390236769Sobrien */ 2391236769Sobrien words = brk_string(line, &argc, TRUE, &path); 2392236769Sobrien if (words == NULL) { 2393236769Sobrien Error("Unterminated quoted string [%s]", line); 2394236769Sobrien return FAILURE; 2395236769Sobrien } 2396236769Sobrien shellArgv = path; 2397236769Sobrien 2398236769Sobrien for (path = NULL, argv = words; argc != 0; argc--, argv++) { 2399236769Sobrien if (strncmp(*argv, "path=", 5) == 0) { 2400236769Sobrien path = &argv[0][5]; 2401236769Sobrien } else if (strncmp(*argv, "name=", 5) == 0) { 2402236769Sobrien newShell.name = &argv[0][5]; 2403236769Sobrien } else { 2404236769Sobrien if (strncmp(*argv, "quiet=", 6) == 0) { 2405236769Sobrien newShell.echoOff = &argv[0][6]; 2406236769Sobrien } else if (strncmp(*argv, "echo=", 5) == 0) { 2407236769Sobrien newShell.echoOn = &argv[0][5]; 2408236769Sobrien } else if (strncmp(*argv, "filter=", 7) == 0) { 2409236769Sobrien newShell.noPrint = &argv[0][7]; 2410236769Sobrien newShell.noPLen = strlen(newShell.noPrint); 2411236769Sobrien } else if (strncmp(*argv, "echoFlag=", 9) == 0) { 2412236769Sobrien newShell.echo = &argv[0][9]; 2413236769Sobrien } else if (strncmp(*argv, "errFlag=", 8) == 0) { 2414236769Sobrien newShell.exit = &argv[0][8]; 2415236769Sobrien } else if (strncmp(*argv, "hasErrCtl=", 10) == 0) { 2416236769Sobrien char c = argv[0][10]; 2417236769Sobrien newShell.hasErrCtl = !((c != 'Y') && (c != 'y') && 2418236769Sobrien (c != 'T') && (c != 't')); 2419236769Sobrien } else if (strncmp(*argv, "newline=", 8) == 0) { 2420236769Sobrien newShell.newline = &argv[0][8]; 2421236769Sobrien } else if (strncmp(*argv, "check=", 6) == 0) { 2422236769Sobrien newShell.errCheck = &argv[0][6]; 2423236769Sobrien } else if (strncmp(*argv, "ignore=", 7) == 0) { 2424236769Sobrien newShell.ignErr = &argv[0][7]; 2425236769Sobrien } else if (strncmp(*argv, "errout=", 7) == 0) { 2426236769Sobrien newShell.errOut = &argv[0][7]; 2427236769Sobrien } else if (strncmp(*argv, "comment=", 8) == 0) { 2428236769Sobrien newShell.commentChar = argv[0][8]; 2429236769Sobrien } else { 2430236769Sobrien Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"", 2431236769Sobrien *argv); 2432236769Sobrien free(words); 2433236769Sobrien return(FAILURE); 2434236769Sobrien } 2435236769Sobrien fullSpec = TRUE; 2436236769Sobrien } 2437236769Sobrien } 2438236769Sobrien 2439236769Sobrien if (path == NULL) { 2440236769Sobrien /* 2441236769Sobrien * If no path was given, the user wants one of the pre-defined shells, 2442236769Sobrien * yes? So we find the one s/he wants with the help of JobMatchShell 2443236769Sobrien * and set things up the right way. shellPath will be set up by 2444236769Sobrien * Job_Init. 2445236769Sobrien */ 2446236769Sobrien if (newShell.name == NULL) { 2447236769Sobrien Parse_Error(PARSE_FATAL, "Neither path nor name specified"); 2448236769Sobrien free(words); 2449236769Sobrien return(FAILURE); 2450236769Sobrien } else { 2451236769Sobrien if ((sh = JobMatchShell(newShell.name)) == NULL) { 2452236769Sobrien Parse_Error(PARSE_WARNING, "%s: No matching shell", 2453236769Sobrien newShell.name); 2454236769Sobrien free(words); 2455236769Sobrien return(FAILURE); 2456236769Sobrien } 2457236769Sobrien commandShell = sh; 2458236769Sobrien shellName = newShell.name; 2459236769Sobrien } 2460236769Sobrien } else { 2461236769Sobrien /* 2462236769Sobrien * The user provided a path. If s/he gave nothing else (fullSpec is 2463236769Sobrien * FALSE), try and find a matching shell in the ones we know of. 2464236769Sobrien * Else we just take the specification at its word and copy it 2465236769Sobrien * to a new location. In either case, we need to record the 2466236769Sobrien * path the user gave for the shell. 2467236769Sobrien */ 2468236769Sobrien shellPath = path; 2469236769Sobrien path = strrchr(path, '/'); 2470236769Sobrien if (path == NULL) { 2471236769Sobrien path = UNCONST(shellPath); 2472236769Sobrien } else { 2473236769Sobrien path += 1; 2474236769Sobrien } 2475236769Sobrien if (newShell.name != NULL) { 2476236769Sobrien shellName = newShell.name; 2477236769Sobrien } else { 2478236769Sobrien shellName = path; 2479236769Sobrien } 2480236769Sobrien if (!fullSpec) { 2481236769Sobrien if ((sh = JobMatchShell(shellName)) == NULL) { 2482236769Sobrien Parse_Error(PARSE_WARNING, "%s: No matching shell", 2483236769Sobrien shellName); 2484236769Sobrien free(words); 2485236769Sobrien return(FAILURE); 2486236769Sobrien } 2487236769Sobrien commandShell = sh; 2488236769Sobrien } else { 2489236769Sobrien commandShell = bmake_malloc(sizeof(Shell)); 2490236769Sobrien *commandShell = newShell; 2491236769Sobrien } 2492236769Sobrien } 2493236769Sobrien 2494236769Sobrien if (commandShell->echoOn && commandShell->echoOff) { 2495236769Sobrien commandShell->hasEchoCtl = TRUE; 2496236769Sobrien } 2497236769Sobrien 2498236769Sobrien if (!commandShell->hasErrCtl) { 2499236769Sobrien if (commandShell->errCheck == NULL) { 2500236769Sobrien commandShell->errCheck = ""; 2501236769Sobrien } 2502236769Sobrien if (commandShell->ignErr == NULL) { 2503236769Sobrien commandShell->ignErr = "%s\n"; 2504236769Sobrien } 2505236769Sobrien } 2506236769Sobrien 2507236769Sobrien /* 2508236769Sobrien * Do not free up the words themselves, since they might be in use by the 2509236769Sobrien * shell specification. 2510236769Sobrien */ 2511236769Sobrien free(words); 2512236769Sobrien return SUCCESS; 2513236769Sobrien} 2514236769Sobrien 2515236769Sobrien/*- 2516236769Sobrien *----------------------------------------------------------------------- 2517236769Sobrien * JobInterrupt -- 2518236769Sobrien * Handle the receipt of an interrupt. 2519236769Sobrien * 2520236769Sobrien * Input: 2521236769Sobrien * runINTERRUPT Non-zero if commands for the .INTERRUPT target 2522236769Sobrien * should be executed 2523236769Sobrien * signo signal received 2524236769Sobrien * 2525236769Sobrien * Results: 2526236769Sobrien * None 2527236769Sobrien * 2528236769Sobrien * Side Effects: 2529236769Sobrien * All children are killed. Another job will be started if the 2530236769Sobrien * .INTERRUPT target was given. 2531236769Sobrien *----------------------------------------------------------------------- 2532236769Sobrien */ 2533236769Sobrienstatic void 2534236769SobrienJobInterrupt(int runINTERRUPT, int signo) 2535236769Sobrien{ 2536236769Sobrien Job *job; /* job descriptor in that element */ 2537236769Sobrien GNode *interrupt; /* the node describing the .INTERRUPT target */ 2538236769Sobrien sigset_t mask; 2539236769Sobrien GNode *gn; 2540236769Sobrien 2541236769Sobrien aborting = ABORT_INTERRUPT; 2542236769Sobrien 2543236769Sobrien JobSigLock(&mask); 2544236769Sobrien 2545236769Sobrien for (job = job_table; job < job_table_end; job++) { 2546236769Sobrien if (job->job_state != JOB_ST_RUNNING) 2547236769Sobrien continue; 2548236769Sobrien 2549236769Sobrien gn = job->node; 2550236769Sobrien 2551236769Sobrien if ((gn->type & (OP_JOIN|OP_PHONY)) == 0 && !Targ_Precious(gn)) { 2552236769Sobrien char *file = (gn->path == NULL ? gn->name : gn->path); 2553236769Sobrien if (!noExecute && eunlink(file) != -1) { 2554236769Sobrien Error("*** %s removed", file); 2555236769Sobrien } 2556236769Sobrien } 2557236769Sobrien if (job->pid) { 2558236769Sobrien if (DEBUG(JOB)) { 2559236769Sobrien (void)fprintf(debug_file, 2560236769Sobrien "JobInterrupt passing signal %d to child %d.\n", 2561236769Sobrien signo, job->pid); 2562236769Sobrien } 2563236769Sobrien KILLPG(job->pid, signo); 2564236769Sobrien } 2565236769Sobrien } 2566236769Sobrien 2567236769Sobrien JobSigUnlock(&mask); 2568236769Sobrien 2569236769Sobrien if (runINTERRUPT && !touchFlag) { 2570236769Sobrien interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE); 2571236769Sobrien if (interrupt != NULL) { 2572236769Sobrien ignoreErrors = FALSE; 2573236769Sobrien JobRun(interrupt); 2574236769Sobrien } 2575236769Sobrien } 2576236769Sobrien Trace_Log(MAKEINTR, 0); 2577236769Sobrien exit(signo); 2578236769Sobrien} 2579236769Sobrien 2580236769Sobrien/* 2581236769Sobrien *----------------------------------------------------------------------- 2582236769Sobrien * Job_Finish -- 2583236769Sobrien * Do final processing such as the running of the commands 2584236769Sobrien * attached to the .END target. 2585236769Sobrien * 2586236769Sobrien * Results: 2587236769Sobrien * Number of errors reported. 2588236769Sobrien * 2589236769Sobrien * Side Effects: 2590236769Sobrien * None. 2591236769Sobrien *----------------------------------------------------------------------- 2592236769Sobrien */ 2593236769Sobrienint 2594236769SobrienJob_Finish(void) 2595236769Sobrien{ 2596236769Sobrien if (postCommands != NULL && 2597236769Sobrien (!Lst_IsEmpty(postCommands->commands) || 2598236769Sobrien !Lst_IsEmpty(postCommands->children))) { 2599236769Sobrien if (errors) { 2600236769Sobrien Error("Errors reported so .END ignored"); 2601236769Sobrien } else { 2602236769Sobrien JobRun(postCommands); 2603236769Sobrien } 2604236769Sobrien } 2605236769Sobrien return(errors); 2606236769Sobrien} 2607236769Sobrien 2608236769Sobrien/*- 2609236769Sobrien *----------------------------------------------------------------------- 2610236769Sobrien * Job_End -- 2611236769Sobrien * Cleanup any memory used by the jobs module 2612236769Sobrien * 2613236769Sobrien * Results: 2614236769Sobrien * None. 2615236769Sobrien * 2616236769Sobrien * Side Effects: 2617236769Sobrien * Memory is freed 2618236769Sobrien *----------------------------------------------------------------------- 2619236769Sobrien */ 2620236769Sobrienvoid 2621236769SobrienJob_End(void) 2622236769Sobrien{ 2623236769Sobrien#ifdef CLEANUP 2624236769Sobrien if (shellArgv) 2625236769Sobrien free(shellArgv); 2626236769Sobrien#endif 2627236769Sobrien} 2628236769Sobrien 2629236769Sobrien/*- 2630236769Sobrien *----------------------------------------------------------------------- 2631236769Sobrien * Job_Wait -- 2632236769Sobrien * Waits for all running jobs to finish and returns. Sets 'aborting' 2633236769Sobrien * to ABORT_WAIT to prevent other jobs from starting. 2634236769Sobrien * 2635236769Sobrien * Results: 2636236769Sobrien * None. 2637236769Sobrien * 2638236769Sobrien * Side Effects: 2639236769Sobrien * Currently running jobs finish. 2640236769Sobrien * 2641236769Sobrien *----------------------------------------------------------------------- 2642236769Sobrien */ 2643236769Sobrienvoid 2644236769SobrienJob_Wait(void) 2645236769Sobrien{ 2646236769Sobrien aborting = ABORT_WAIT; 2647236769Sobrien while (jobTokensRunning != 0) { 2648236769Sobrien Job_CatchOutput(); 2649236769Sobrien } 2650236769Sobrien aborting = 0; 2651236769Sobrien} 2652236769Sobrien 2653236769Sobrien/*- 2654236769Sobrien *----------------------------------------------------------------------- 2655236769Sobrien * Job_AbortAll -- 2656236769Sobrien * Abort all currently running jobs without handling output or anything. 2657236769Sobrien * This function is to be called only in the event of a major 2658236769Sobrien * error. Most definitely NOT to be called from JobInterrupt. 2659236769Sobrien * 2660236769Sobrien * Results: 2661236769Sobrien * None 2662236769Sobrien * 2663236769Sobrien * Side Effects: 2664236769Sobrien * All children are killed, not just the firstborn 2665236769Sobrien *----------------------------------------------------------------------- 2666236769Sobrien */ 2667236769Sobrienvoid 2668236769SobrienJob_AbortAll(void) 2669236769Sobrien{ 2670236769Sobrien Job *job; /* the job descriptor in that element */ 2671236769Sobrien WAIT_T foo; 2672236769Sobrien 2673236769Sobrien aborting = ABORT_ERROR; 2674236769Sobrien 2675236769Sobrien if (jobTokensRunning) { 2676236769Sobrien for (job = job_table; job < job_table_end; job++) { 2677236769Sobrien if (job->job_state != JOB_ST_RUNNING) 2678236769Sobrien continue; 2679236769Sobrien /* 2680236769Sobrien * kill the child process with increasingly drastic signals to make 2681236769Sobrien * darn sure it's dead. 2682236769Sobrien */ 2683236769Sobrien KILLPG(job->pid, SIGINT); 2684236769Sobrien KILLPG(job->pid, SIGKILL); 2685236769Sobrien } 2686236769Sobrien } 2687236769Sobrien 2688236769Sobrien /* 2689236769Sobrien * Catch as many children as want to report in at first, then give up 2690236769Sobrien */ 2691236769Sobrien while (waitpid((pid_t) -1, &foo, WNOHANG) > 0) 2692236769Sobrien continue; 2693236769Sobrien} 2694236769Sobrien 2695236769Sobrien 2696236769Sobrien/*- 2697236769Sobrien *----------------------------------------------------------------------- 2698236769Sobrien * JobRestartJobs -- 2699236769Sobrien * Tries to restart stopped jobs if there are slots available. 2700236769Sobrien * Called in process context in response to a SIGCONT. 2701236769Sobrien * 2702236769Sobrien * Results: 2703236769Sobrien * None. 2704236769Sobrien * 2705236769Sobrien * Side Effects: 2706236769Sobrien * Resumes jobs. 2707236769Sobrien * 2708236769Sobrien *----------------------------------------------------------------------- 2709236769Sobrien */ 2710236769Sobrienstatic void 2711236769SobrienJobRestartJobs(void) 2712236769Sobrien{ 2713236769Sobrien Job *job; 2714236769Sobrien 2715236769Sobrien for (job = job_table; job < job_table_end; job++) { 2716236769Sobrien if (job->job_state == JOB_ST_RUNNING && 2717236769Sobrien (make_suspended || job->job_suspended)) { 2718236769Sobrien if (DEBUG(JOB)) { 2719236769Sobrien (void)fprintf(debug_file, "Restarting stopped job pid %d.\n", 2720236769Sobrien job->pid); 2721236769Sobrien } 2722236769Sobrien if (job->job_suspended) { 2723236769Sobrien (void)printf("*** [%s] Continued\n", job->node->name); 2724236769Sobrien (void)fflush(stdout); 2725236769Sobrien } 2726236769Sobrien job->job_suspended = 0; 2727236769Sobrien if (KILLPG(job->pid, SIGCONT) != 0 && DEBUG(JOB)) { 2728236769Sobrien fprintf(debug_file, "Failed to send SIGCONT to %d\n", job->pid); 2729236769Sobrien } 2730236769Sobrien } 2731236769Sobrien if (job->job_state == JOB_ST_FINISHED) 2732236769Sobrien /* Job exit deferred after calling waitpid() in a signal handler */ 2733236769Sobrien JobFinish(job, job->exit_status); 2734236769Sobrien } 2735236769Sobrien make_suspended = 0; 2736236769Sobrien} 2737236769Sobrien 2738236769Sobrienstatic void 2739236769Sobrienwatchfd(Job *job) 2740236769Sobrien{ 2741236769Sobrien if (job->inPollfd != NULL) 2742236769Sobrien Punt("Watching watched job"); 2743236769Sobrien 2744236769Sobrien fds[nfds].fd = job->inPipe; 2745236769Sobrien fds[nfds].events = POLLIN; 2746236769Sobrien jobfds[nfds] = job; 2747236769Sobrien job->inPollfd = &fds[nfds]; 2748236769Sobrien nfds++; 2749236769Sobrien} 2750236769Sobrien 2751236769Sobrienstatic void 2752236769Sobrienclearfd(Job *job) 2753236769Sobrien{ 2754236769Sobrien int i; 2755236769Sobrien if (job->inPollfd == NULL) 2756236769Sobrien Punt("Unwatching unwatched job"); 2757236769Sobrien i = job->inPollfd - fds; 2758236769Sobrien nfds--; 2759236769Sobrien /* 2760236769Sobrien * Move last job in table into hole made by dead job. 2761236769Sobrien */ 2762236769Sobrien if (nfds != i) { 2763236769Sobrien fds[i] = fds[nfds]; 2764236769Sobrien jobfds[i] = jobfds[nfds]; 2765236769Sobrien jobfds[i]->inPollfd = &fds[i]; 2766236769Sobrien } 2767236769Sobrien job->inPollfd = NULL; 2768236769Sobrien} 2769236769Sobrien 2770236769Sobrienstatic int 2771236769Sobrienreadyfd(Job *job) 2772236769Sobrien{ 2773236769Sobrien if (job->inPollfd == NULL) 2774236769Sobrien Punt("Polling unwatched job"); 2775236769Sobrien return (job->inPollfd->revents & POLLIN) != 0; 2776236769Sobrien} 2777236769Sobrien 2778236769Sobrien/*- 2779236769Sobrien *----------------------------------------------------------------------- 2780236769Sobrien * JobTokenAdd -- 2781236769Sobrien * Put a token into the job pipe so that some make process can start 2782236769Sobrien * another job. 2783236769Sobrien * 2784236769Sobrien * Side Effects: 2785236769Sobrien * Allows more build jobs to be spawned somewhere. 2786236769Sobrien * 2787236769Sobrien *----------------------------------------------------------------------- 2788236769Sobrien */ 2789236769Sobrien 2790236769Sobrienstatic void 2791236769SobrienJobTokenAdd(void) 2792236769Sobrien{ 2793236769Sobrien char tok = JOB_TOKENS[aborting], tok1; 2794236769Sobrien 2795236769Sobrien /* If we are depositing an error token flush everything else */ 2796236769Sobrien while (tok != '+' && read(tokenWaitJob.inPipe, &tok1, 1) == 1) 2797236769Sobrien continue; 2798236769Sobrien 2799236769Sobrien if (DEBUG(JOB)) 2800236769Sobrien fprintf(debug_file, "(%d) aborting %d, deposit token %c\n", 2801236769Sobrien getpid(), aborting, JOB_TOKENS[aborting]); 2802236769Sobrien write(tokenWaitJob.outPipe, &tok, 1); 2803236769Sobrien} 2804236769Sobrien 2805236769Sobrien/*- 2806236769Sobrien *----------------------------------------------------------------------- 2807236769Sobrien * Job_ServerStartTokenAdd -- 2808236769Sobrien * Prep the job token pipe in the root make process. 2809236769Sobrien * 2810236769Sobrien *----------------------------------------------------------------------- 2811236769Sobrien */ 2812236769Sobrien 2813236769Sobrienvoid 2814236769SobrienJob_ServerStart(int max_tokens, int jp_0, int jp_1) 2815236769Sobrien{ 2816236769Sobrien int i; 2817236769Sobrien char jobarg[64]; 2818236769Sobrien 2819236769Sobrien if (jp_0 >= 0 && jp_1 >= 0) { 2820236769Sobrien /* Pipe passed in from parent */ 2821236769Sobrien tokenWaitJob.inPipe = jp_0; 2822236769Sobrien tokenWaitJob.outPipe = jp_1; 2823236769Sobrien return; 2824236769Sobrien } 2825236769Sobrien 2826236769Sobrien JobCreatePipe(&tokenWaitJob, 15); 2827236769Sobrien 2828236769Sobrien snprintf(jobarg, sizeof(jobarg), "%d,%d", 2829236769Sobrien tokenWaitJob.inPipe, tokenWaitJob.outPipe); 2830236769Sobrien 2831236769Sobrien Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 2832236769Sobrien Var_Append(MAKEFLAGS, jobarg, VAR_GLOBAL); 2833236769Sobrien 2834236769Sobrien /* 2835236769Sobrien * Preload the job pipe with one token per job, save the one 2836236769Sobrien * "extra" token for the primary job. 2837236769Sobrien * 2838236769Sobrien * XXX should clip maxJobs against PIPE_BUF -- if max_tokens is 2839236769Sobrien * larger than the write buffer size of the pipe, we will 2840236769Sobrien * deadlock here. 2841236769Sobrien */ 2842236769Sobrien for (i = 1; i < max_tokens; i++) 2843236769Sobrien JobTokenAdd(); 2844236769Sobrien} 2845236769Sobrien 2846236769Sobrien/*- 2847236769Sobrien *----------------------------------------------------------------------- 2848236769Sobrien * Job_TokenReturn -- 2849236769Sobrien * Return a withdrawn token to the pool. 2850236769Sobrien * 2851236769Sobrien *----------------------------------------------------------------------- 2852236769Sobrien */ 2853236769Sobrien 2854236769Sobrienvoid 2855236769SobrienJob_TokenReturn(void) 2856236769Sobrien{ 2857236769Sobrien jobTokensRunning--; 2858236769Sobrien if (jobTokensRunning < 0) 2859236769Sobrien Punt("token botch"); 2860236769Sobrien if (jobTokensRunning || JOB_TOKENS[aborting] != '+') 2861236769Sobrien JobTokenAdd(); 2862236769Sobrien} 2863236769Sobrien 2864236769Sobrien/*- 2865236769Sobrien *----------------------------------------------------------------------- 2866236769Sobrien * Job_TokenWithdraw -- 2867236769Sobrien * Attempt to withdraw a token from the pool. 2868236769Sobrien * 2869236769Sobrien * Results: 2870236769Sobrien * Returns TRUE if a token was withdrawn, and FALSE if the pool 2871236769Sobrien * is currently empty. 2872236769Sobrien * 2873236769Sobrien * Side Effects: 2874236769Sobrien * If pool is empty, set wantToken so that we wake up 2875236769Sobrien * when a token is released. 2876236769Sobrien * 2877236769Sobrien *----------------------------------------------------------------------- 2878236769Sobrien */ 2879236769Sobrien 2880236769Sobrien 2881236769SobrienBoolean 2882236769SobrienJob_TokenWithdraw(void) 2883236769Sobrien{ 2884236769Sobrien char tok, tok1; 2885236769Sobrien int count; 2886236769Sobrien 2887236769Sobrien wantToken = 0; 2888236769Sobrien if (DEBUG(JOB)) 2889236769Sobrien fprintf(debug_file, "Job_TokenWithdraw(%d): aborting %d, running %d\n", 2890236769Sobrien getpid(), aborting, jobTokensRunning); 2891236769Sobrien 2892236769Sobrien if (aborting || (jobTokensRunning >= maxJobs)) 2893236769Sobrien return FALSE; 2894236769Sobrien 2895236769Sobrien count = read(tokenWaitJob.inPipe, &tok, 1); 2896236769Sobrien if (count == 0) 2897236769Sobrien Fatal("eof on job pipe!"); 2898236769Sobrien if (count < 0 && jobTokensRunning != 0) { 2899236769Sobrien if (errno != EAGAIN) { 2900236769Sobrien Fatal("job pipe read: %s", strerror(errno)); 2901236769Sobrien } 2902236769Sobrien if (DEBUG(JOB)) 2903236769Sobrien fprintf(debug_file, "(%d) blocked for token\n", getpid()); 2904236769Sobrien wantToken = 1; 2905236769Sobrien return FALSE; 2906236769Sobrien } 2907236769Sobrien 2908236769Sobrien if (count == 1 && tok != '+') { 2909236769Sobrien /* make being abvorted - remove any other job tokens */ 2910236769Sobrien if (DEBUG(JOB)) 2911236769Sobrien fprintf(debug_file, "(%d) aborted by token %c\n", getpid(), tok); 2912236769Sobrien while (read(tokenWaitJob.inPipe, &tok1, 1) == 1) 2913236769Sobrien continue; 2914236769Sobrien /* And put the stopper back */ 2915236769Sobrien write(tokenWaitJob.outPipe, &tok, 1); 2916236769Sobrien Fatal("A failure has been detected in another branch of the parallel make"); 2917236769Sobrien } 2918236769Sobrien 2919236769Sobrien if (count == 1 && jobTokensRunning == 0) 2920236769Sobrien /* We didn't want the token really */ 2921236769Sobrien write(tokenWaitJob.outPipe, &tok, 1); 2922236769Sobrien 2923236769Sobrien jobTokensRunning++; 2924236769Sobrien if (DEBUG(JOB)) 2925236769Sobrien fprintf(debug_file, "(%d) withdrew token\n", getpid()); 2926236769Sobrien return TRUE; 2927236769Sobrien} 2928236769Sobrien 2929236769Sobrien#ifdef USE_SELECT 2930236769Sobrienint 2931236769Sobrienemul_poll(struct pollfd *fd, int nfd, int timeout) 2932236769Sobrien{ 2933236769Sobrien fd_set rfds, wfds; 2934236769Sobrien int i, maxfd, nselect, npoll; 2935236769Sobrien struct timeval tv, *tvp; 2936236769Sobrien long usecs; 2937236769Sobrien 2938236769Sobrien FD_ZERO(&rfds); 2939236769Sobrien FD_ZERO(&wfds); 2940236769Sobrien 2941236769Sobrien maxfd = -1; 2942236769Sobrien for (i = 0; i < nfd; i++) { 2943236769Sobrien fd[i].revents = 0; 2944236769Sobrien 2945236769Sobrien if (fd[i].events & POLLIN) 2946236769Sobrien FD_SET(fd[i].fd, &rfds); 2947236769Sobrien 2948236769Sobrien if (fd[i].events & POLLOUT) 2949236769Sobrien FD_SET(fd[i].fd, &wfds); 2950236769Sobrien 2951236769Sobrien if (fd[i].fd > maxfd) 2952236769Sobrien maxfd = fd[i].fd; 2953236769Sobrien } 2954236769Sobrien 2955236769Sobrien if (maxfd >= FD_SETSIZE) { 2956236769Sobrien Punt("Ran out of fd_set slots; " 2957236769Sobrien "recompile with a larger FD_SETSIZE."); 2958236769Sobrien } 2959236769Sobrien 2960236769Sobrien if (timeout < 0) { 2961236769Sobrien tvp = NULL; 2962236769Sobrien } else { 2963236769Sobrien usecs = timeout * 1000; 2964236769Sobrien tv.tv_sec = usecs / 1000000; 2965236769Sobrien tv.tv_usec = usecs % 1000000; 2966236769Sobrien tvp = &tv; 2967236769Sobrien } 2968236769Sobrien 2969236769Sobrien nselect = select(maxfd + 1, &rfds, &wfds, 0, tvp); 2970236769Sobrien 2971236769Sobrien if (nselect <= 0) 2972236769Sobrien return nselect; 2973236769Sobrien 2974236769Sobrien npoll = 0; 2975236769Sobrien for (i = 0; i < nfd; i++) { 2976236769Sobrien if (FD_ISSET(fd[i].fd, &rfds)) 2977236769Sobrien fd[i].revents |= POLLIN; 2978236769Sobrien 2979236769Sobrien if (FD_ISSET(fd[i].fd, &wfds)) 2980236769Sobrien fd[i].revents |= POLLOUT; 2981236769Sobrien 2982236769Sobrien if (fd[i].revents) 2983236769Sobrien npoll++; 2984236769Sobrien } 2985236769Sobrien 2986236769Sobrien return npoll; 2987236769Sobrien} 2988236769Sobrien#endif /* USE_SELECT */ 2989