06bf2a6aef
Read locking is over used in the kernel to guarantee liveness. This API makes it easy to provide livenes guarantees without atomics. Includes epoch_test kernel module to stress test the API. Documentation will follow initial use case. Test case and improvements to preemption handling in response to discussion with mjg@ Reviewed by: imp@, shurd@ Approved by: sbruno@
3122 lines
83 KiB
C
3122 lines
83 KiB
C
/* $NetBSD: job.c,v 1.192 2018/02/08 09:05:21 dholland Exp $ */
|
||
|
||
/*
|
||
* Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
|
||
* All rights reserved.
|
||
*
|
||
* This code is derived from software contributed to Berkeley by
|
||
* Adam de Boor.
|
||
*
|
||
* Redistribution and use in source and binary forms, with or without
|
||
* modification, are permitted provided that the following conditions
|
||
* are met:
|
||
* 1. Redistributions of source code must retain the above copyright
|
||
* notice, this list of conditions and the following disclaimer.
|
||
* 2. Redistributions in binary form must reproduce the above copyright
|
||
* notice, this list of conditions and the following disclaimer in the
|
||
* documentation and/or other materials provided with the distribution.
|
||
* 3. Neither the name of the University nor the names of its contributors
|
||
* may be used to endorse or promote products derived from this software
|
||
* without specific prior written permission.
|
||
*
|
||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
* SUCH DAMAGE.
|
||
*/
|
||
|
||
/*
|
||
* Copyright (c) 1988, 1989 by Adam de Boor
|
||
* Copyright (c) 1989 by Berkeley Softworks
|
||
* All rights reserved.
|
||
*
|
||
* This code is derived from software contributed to Berkeley by
|
||
* Adam de Boor.
|
||
*
|
||
* Redistribution and use in source and binary forms, with or without
|
||
* modification, are permitted provided that the following conditions
|
||
* are met:
|
||
* 1. Redistributions of source code must retain the above copyright
|
||
* notice, this list of conditions and the following disclaimer.
|
||
* 2. Redistributions in binary form must reproduce the above copyright
|
||
* notice, this list of conditions and the following disclaimer in the
|
||
* documentation and/or other materials provided with the distribution.
|
||
* 3. All advertising materials mentioning features or use of this software
|
||
* must display the following acknowledgement:
|
||
* This product includes software developed by the University of
|
||
* California, Berkeley and its contributors.
|
||
* 4. Neither the name of the University nor the names of its contributors
|
||
* may be used to endorse or promote products derived from this software
|
||
* without specific prior written permission.
|
||
*
|
||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
* SUCH DAMAGE.
|
||
*/
|
||
|
||
#ifndef MAKE_NATIVE
|
||
static char rcsid[] = "$NetBSD: job.c,v 1.192 2018/02/08 09:05:21 dholland Exp $";
|
||
#else
|
||
#include <sys/cdefs.h>
|
||
#ifndef lint
|
||
#if 0
|
||
static char sccsid[] = "@(#)job.c 8.2 (Berkeley) 3/19/94";
|
||
#else
|
||
__RCSID("$NetBSD: job.c,v 1.192 2018/02/08 09:05:21 dholland Exp $");
|
||
#endif
|
||
#endif /* not lint */
|
||
#endif
|
||
|
||
/*-
|
||
* job.c --
|
||
* handle the creation etc. of our child processes.
|
||
*
|
||
* Interface:
|
||
* Job_Make Start the creation of the given target.
|
||
*
|
||
* Job_CatchChildren Check for and handle the termination of any
|
||
* children. This must be called reasonably
|
||
* frequently to keep the whole make going at
|
||
* a decent clip, since job table entries aren't
|
||
* removed until their process is caught this way.
|
||
*
|
||
* Job_CatchOutput Print any output our children have produced.
|
||
* Should also be called fairly frequently to
|
||
* keep the user informed of what's going on.
|
||
* If no output is waiting, it will block for
|
||
* a time given by the SEL_* constants, below,
|
||
* or until output is ready.
|
||
*
|
||
* Job_Init Called to initialize this module. in addition,
|
||
* any commands attached to the .BEGIN target
|
||
* are executed before this function returns.
|
||
* Hence, the makefile must have been parsed
|
||
* before this function is called.
|
||
*
|
||
* Job_End Cleanup any memory used.
|
||
*
|
||
* Job_ParseShell Given the line following a .SHELL target, parse
|
||
* the line as a shell specification. Returns
|
||
* FAILURE if the spec was incorrect.
|
||
*
|
||
* Job_Finish Perform any final processing which needs doing.
|
||
* This includes the execution of any commands
|
||
* which have been/were attached to the .END
|
||
* target. It should only be called when the
|
||
* job table is empty.
|
||
*
|
||
* Job_AbortAll Abort all currently running jobs. It doesn't
|
||
* handle output or do anything for the jobs,
|
||
* just kills them. It should only be called in
|
||
* an emergency, as it were.
|
||
*
|
||
* Job_CheckCommands Verify that the commands for a target are
|
||
* ok. Provide them if necessary and possible.
|
||
*
|
||
* Job_Touch Update a target without really updating it.
|
||
*
|
||
* Job_Wait Wait for all currently-running jobs to finish.
|
||
*/
|
||
|
||
#ifdef HAVE_CONFIG_H
|
||
# include "config.h"
|
||
#endif
|
||
#include <sys/types.h>
|
||
#include <sys/stat.h>
|
||
#include <sys/file.h>
|
||
#include <sys/time.h>
|
||
#include "wait.h"
|
||
|
||
#include <assert.h>
|
||
#include <errno.h>
|
||
#if !defined(USE_SELECT) && defined(HAVE_POLL_H)
|
||
#include <poll.h>
|
||
#else
|
||
#ifndef USE_SELECT /* no poll.h */
|
||
# define USE_SELECT
|
||
#endif
|
||
#if defined(HAVE_SYS_SELECT_H)
|
||
# include <sys/select.h>
|
||
#endif
|
||
#endif
|
||
#include <signal.h>
|
||
#include <stdio.h>
|
||
#include <string.h>
|
||
#include <utime.h>
|
||
#if defined(HAVE_SYS_SOCKET_H)
|
||
# include <sys/socket.h>
|
||
#endif
|
||
|
||
#include "make.h"
|
||
#include "hash.h"
|
||
#include "dir.h"
|
||
#include "job.h"
|
||
#include "pathnames.h"
|
||
#include "trace.h"
|
||
# define STATIC static
|
||
|
||
/*
|
||
* FreeBSD: traditionally .MAKE is not required to
|
||
* pass jobs queue to sub-makes.
|
||
* Use .MAKE.ALWAYS_PASS_JOB_QUEUE=no to disable.
|
||
*/
|
||
#define MAKE_ALWAYS_PASS_JOB_QUEUE ".MAKE.ALWAYS_PASS_JOB_QUEUE"
|
||
static int Always_pass_job_queue = TRUE;
|
||
/*
|
||
* FreeBSD: aborting entire parallel make isn't always
|
||
* desired. When doing tinderbox for example, failure of
|
||
* one architecture should not stop all.
|
||
* We still want to bail on interrupt though.
|
||
*/
|
||
#define MAKE_JOB_ERROR_TOKEN "MAKE_JOB_ERROR_TOKEN"
|
||
static int Job_error_token = TRUE;
|
||
|
||
/*
|
||
* error handling variables
|
||
*/
|
||
static int errors = 0; /* number of errors reported */
|
||
static int aborting = 0; /* why is the make aborting? */
|
||
#define ABORT_ERROR 1 /* Because of an error */
|
||
#define ABORT_INTERRUPT 2 /* Because it was interrupted */
|
||
#define ABORT_WAIT 3 /* Waiting for jobs to finish */
|
||
#define JOB_TOKENS "+EI+" /* Token to requeue for each abort state */
|
||
|
||
/*
|
||
* this tracks the number of tokens currently "out" to build jobs.
|
||
*/
|
||
int jobTokensRunning = 0;
|
||
int not_parallel = 0; /* set if .NOT_PARALLEL */
|
||
|
||
/*
|
||
* XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
|
||
* is a char! So when we go above 127 we turn negative!
|
||
*/
|
||
#define FILENO(a) ((unsigned) fileno(a))
|
||
|
||
/*
|
||
* post-make command processing. The node postCommands is really just the
|
||
* .END target but we keep it around to avoid having to search for it
|
||
* all the time.
|
||
*/
|
||
static GNode *postCommands = NULL;
|
||
/* node containing commands to execute when
|
||
* everything else is done */
|
||
static int numCommands; /* The number of commands actually printed
|
||
* for a target. Should this number be
|
||
* 0, no shell will be executed. */
|
||
|
||
/*
|
||
* Return values from JobStart.
|
||
*/
|
||
#define JOB_RUNNING 0 /* Job is running */
|
||
#define JOB_ERROR 1 /* Error in starting the job */
|
||
#define JOB_FINISHED 2 /* The job is already finished */
|
||
|
||
/*
|
||
* Descriptions for various shells.
|
||
*
|
||
* The build environment may set DEFSHELL_INDEX to one of
|
||
* DEFSHELL_INDEX_SH, DEFSHELL_INDEX_KSH, or DEFSHELL_INDEX_CSH, to
|
||
* select one of the prefedined shells as the default shell.
|
||
*
|
||
* Alternatively, the build environment may set DEFSHELL_CUSTOM to the
|
||
* name or the full path of a sh-compatible shell, which will be used as
|
||
* the default shell.
|
||
*
|
||
* ".SHELL" lines in Makefiles can choose the default shell from the
|
||
# set defined here, or add additional shells.
|
||
*/
|
||
|
||
#ifdef DEFSHELL_CUSTOM
|
||
#define DEFSHELL_INDEX_CUSTOM 0
|
||
#define DEFSHELL_INDEX_SH 1
|
||
#define DEFSHELL_INDEX_KSH 2
|
||
#define DEFSHELL_INDEX_CSH 3
|
||
#else /* !DEFSHELL_CUSTOM */
|
||
#define DEFSHELL_INDEX_SH 0
|
||
#define DEFSHELL_INDEX_KSH 1
|
||
#define DEFSHELL_INDEX_CSH 2
|
||
#endif /* !DEFSHELL_CUSTOM */
|
||
|
||
#ifndef DEFSHELL_INDEX
|
||
#define DEFSHELL_INDEX 0 /* DEFSHELL_INDEX_CUSTOM or DEFSHELL_INDEX_SH */
|
||
#endif /* !DEFSHELL_INDEX */
|
||
|
||
static Shell shells[] = {
|
||
#ifdef DEFSHELL_CUSTOM
|
||
/*
|
||
* An sh-compatible shell with a non-standard name.
|
||
*
|
||
* Keep this in sync with the "sh" description below, but avoid
|
||
* non-portable features that might not be supplied by all
|
||
* sh-compatible shells.
|
||
*/
|
||
{
|
||
DEFSHELL_CUSTOM,
|
||
FALSE, "", "", "", 0,
|
||
FALSE, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#',
|
||
"",
|
||
"",
|
||
},
|
||
#endif /* DEFSHELL_CUSTOM */
|
||
/*
|
||
* SH description. Echo control is also possible and, under
|
||
* sun UNIX anyway, one can even control error checking.
|
||
*/
|
||
{
|
||
"sh",
|
||
FALSE, "", "", "", 0,
|
||
FALSE, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#',
|
||
#if defined(MAKE_NATIVE) && defined(__NetBSD__)
|
||
"q",
|
||
#else
|
||
"",
|
||
#endif
|
||
"",
|
||
},
|
||
/*
|
||
* KSH description.
|
||
*/
|
||
{
|
||
"ksh",
|
||
TRUE, "set +v", "set -v", "set +v", 6,
|
||
FALSE, "echo \"%s\"\n", "%s\n", "{ %s \n} || exit $?\n", "'\n'", '#',
|
||
"v",
|
||
"",
|
||
},
|
||
/*
|
||
* CSH description. The csh can do echo control by playing
|
||
* with the setting of the 'echo' shell variable. Sadly,
|
||
* however, it is unable to do error control nicely.
|
||
*/
|
||
{
|
||
"csh",
|
||
TRUE, "unset verbose", "set verbose", "unset verbose", 10,
|
||
FALSE, "echo \"%s\"\n", "csh -c \"%s || exit 0\"\n", "", "'\\\n'", '#',
|
||
"v", "e",
|
||
},
|
||
/*
|
||
* UNKNOWN.
|
||
*/
|
||
{
|
||
NULL,
|
||
FALSE, NULL, NULL, NULL, 0,
|
||
FALSE, NULL, NULL, NULL, NULL, 0,
|
||
NULL, NULL,
|
||
}
|
||
};
|
||
static Shell *commandShell = &shells[DEFSHELL_INDEX]; /* this is the shell to
|
||
* which we pass all
|
||
* commands in the Makefile.
|
||
* It is set by the
|
||
* Job_ParseShell function */
|
||
const char *shellPath = NULL, /* full pathname of
|
||
* executable image */
|
||
*shellName = NULL; /* last component of shell */
|
||
char *shellErrFlag = NULL;
|
||
static const char *shellArgv = NULL; /* Custom shell args */
|
||
|
||
|
||
STATIC Job *job_table; /* The structures that describe them */
|
||
STATIC Job *job_table_end; /* job_table + maxJobs */
|
||
static int wantToken; /* we want a token */
|
||
static int lurking_children = 0;
|
||
static int make_suspended = 0; /* non-zero if we've seen a SIGTSTP (etc) */
|
||
|
||
/*
|
||
* Set of descriptors of pipes connected to
|
||
* the output channels of children
|
||
*/
|
||
static struct pollfd *fds = NULL;
|
||
static Job **jobfds = NULL;
|
||
static int nfds = 0;
|
||
static void watchfd(Job *);
|
||
static void clearfd(Job *);
|
||
static int readyfd(Job *);
|
||
|
||
STATIC GNode *lastNode; /* The node for which output was most recently
|
||
* produced. */
|
||
static char *targPrefix = NULL; /* What we print at the start of TARG_FMT */
|
||
static Job tokenWaitJob; /* token wait pseudo-job */
|
||
|
||
static Job childExitJob; /* child exit pseudo-job */
|
||
#define CHILD_EXIT "."
|
||
#define DO_JOB_RESUME "R"
|
||
|
||
#define TARG_FMT "%s %s ---\n" /* Default format */
|
||
#define MESSAGE(fp, gn) \
|
||
if (maxJobs != 1 && targPrefix && *targPrefix) \
|
||
(void)fprintf(fp, TARG_FMT, targPrefix, gn->name)
|
||
|
||
static sigset_t caught_signals; /* Set of signals we handle */
|
||
|
||
static void JobChildSig(int);
|
||
static void JobContinueSig(int);
|
||
static Job *JobFindPid(int, int, Boolean);
|
||
static int JobPrintCommand(void *, void *);
|
||
static int JobSaveCommand(void *, void *);
|
||
static void JobClose(Job *);
|
||
static void JobExec(Job *, char **);
|
||
static void JobMakeArgv(Job *, char **);
|
||
static int JobStart(GNode *, int);
|
||
static char *JobOutput(Job *, char *, char *, int);
|
||
static void JobDoOutput(Job *, Boolean);
|
||
static Shell *JobMatchShell(const char *);
|
||
static void JobInterrupt(int, int) MAKE_ATTR_DEAD;
|
||
static void JobRestartJobs(void);
|
||
static void JobTokenAdd(void);
|
||
static void JobSigLock(sigset_t *);
|
||
static void JobSigUnlock(sigset_t *);
|
||
static void JobSigReset(void);
|
||
|
||
#if !defined(MALLOC_OPTIONS)
|
||
# define MALLOC_OPTIONS "A"
|
||
#endif
|
||
const char *malloc_options= MALLOC_OPTIONS;
|
||
|
||
static void
|
||
job_table_dump(const char *where)
|
||
{
|
||
Job *job;
|
||
|
||
fprintf(debug_file, "job table @ %s\n", where);
|
||
for (job = job_table; job < job_table_end; job++) {
|
||
fprintf(debug_file, "job %d, status %d, flags %d, pid %d\n",
|
||
(int)(job - job_table), job->job_state, job->flags, job->pid);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Delete the target of a failed, interrupted, or otherwise
|
||
* unsuccessful job unless inhibited by .PRECIOUS.
|
||
*/
|
||
static void
|
||
JobDeleteTarget(GNode *gn)
|
||
{
|
||
if ((gn->type & (OP_JOIN|OP_PHONY)) == 0 && !Targ_Precious(gn)) {
|
||
char *file = (gn->path == NULL ? gn->name : gn->path);
|
||
if (!noExecute && eunlink(file) != -1) {
|
||
Error("*** %s removed", file);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* JobSigLock/JobSigUnlock
|
||
*
|
||
* Signal lock routines to get exclusive access. Currently used to
|
||
* protect `jobs' and `stoppedJobs' list manipulations.
|
||
*/
|
||
static void JobSigLock(sigset_t *omaskp)
|
||
{
|
||
if (sigprocmask(SIG_BLOCK, &caught_signals, omaskp) != 0) {
|
||
Punt("JobSigLock: sigprocmask: %s", strerror(errno));
|
||
sigemptyset(omaskp);
|
||
}
|
||
}
|
||
|
||
static void JobSigUnlock(sigset_t *omaskp)
|
||
{
|
||
(void)sigprocmask(SIG_SETMASK, omaskp, NULL);
|
||
}
|
||
|
||
static void
|
||
JobCreatePipe(Job *job, int minfd)
|
||
{
|
||
int i, fd, flags;
|
||
|
||
if (pipe(job->jobPipe) == -1)
|
||
Punt("Cannot create pipe: %s", strerror(errno));
|
||
|
||
for (i = 0; i < 2; i++) {
|
||
/* Avoid using low numbered fds */
|
||
fd = fcntl(job->jobPipe[i], F_DUPFD, minfd);
|
||
if (fd != -1) {
|
||
close(job->jobPipe[i]);
|
||
job->jobPipe[i] = fd;
|
||
}
|
||
}
|
||
|
||
/* Set close-on-exec flag for both */
|
||
if (fcntl(job->jobPipe[0], F_SETFD, FD_CLOEXEC) == -1)
|
||
Punt("Cannot set close-on-exec: %s", strerror(errno));
|
||
if (fcntl(job->jobPipe[1], F_SETFD, FD_CLOEXEC) == -1)
|
||
Punt("Cannot set close-on-exec: %s", strerror(errno));
|
||
|
||
/*
|
||
* We mark the input side of the pipe non-blocking; we poll(2) the
|
||
* pipe when we're waiting for a job token, but we might lose the
|
||
* race for the token when a new one becomes available, so the read
|
||
* from the pipe should not block.
|
||
*/
|
||
flags = fcntl(job->jobPipe[0], F_GETFL, 0);
|
||
if (flags == -1)
|
||
Punt("Cannot get flags: %s", strerror(errno));
|
||
flags |= O_NONBLOCK;
|
||
if (fcntl(job->jobPipe[0], F_SETFL, flags) == -1)
|
||
Punt("Cannot set flags: %s", strerror(errno));
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobCondPassSig --
|
||
* Pass a signal to a job
|
||
*
|
||
* Input:
|
||
* signop Signal to send it
|
||
*
|
||
* Side Effects:
|
||
* None, except the job may bite it.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobCondPassSig(int signo)
|
||
{
|
||
Job *job;
|
||
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(debug_file, "JobCondPassSig(%d) called.\n", signo);
|
||
}
|
||
|
||
for (job = job_table; job < job_table_end; job++) {
|
||
if (job->job_state != JOB_ST_RUNNING)
|
||
continue;
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(debug_file,
|
||
"JobCondPassSig passing signal %d to child %d.\n",
|
||
signo, job->pid);
|
||
}
|
||
KILLPG(job->pid, signo);
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobChldSig --
|
||
* SIGCHLD handler.
|
||
*
|
||
* Input:
|
||
* signo The signal number we've received
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* Sends a token on the child exit pipe to wake us up from
|
||
* select()/poll().
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobChildSig(int signo MAKE_ATTR_UNUSED)
|
||
{
|
||
while (write(childExitJob.outPipe, CHILD_EXIT, 1) == -1 && errno == EAGAIN)
|
||
continue;
|
||
}
|
||
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobContinueSig --
|
||
* Resume all stopped jobs.
|
||
*
|
||
* Input:
|
||
* signo The signal number we've received
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* Jobs start running again.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobContinueSig(int signo MAKE_ATTR_UNUSED)
|
||
{
|
||
/*
|
||
* Defer sending to SIGCONT to our stopped children until we return
|
||
* from the signal handler.
|
||
*/
|
||
while (write(childExitJob.outPipe, DO_JOB_RESUME, 1) == -1 &&
|
||
errno == EAGAIN)
|
||
continue;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobPassSig --
|
||
* Pass a signal on to all jobs, then resend to ourselves.
|
||
*
|
||
* Input:
|
||
* signo The signal number we've received
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* We die by the same signal.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
MAKE_ATTR_DEAD static void
|
||
JobPassSig_int(int signo)
|
||
{
|
||
/* Run .INTERRUPT target then exit */
|
||
JobInterrupt(TRUE, signo);
|
||
}
|
||
|
||
MAKE_ATTR_DEAD static void
|
||
JobPassSig_term(int signo)
|
||
{
|
||
/* Dont run .INTERRUPT target then exit */
|
||
JobInterrupt(FALSE, signo);
|
||
}
|
||
|
||
static void
|
||
JobPassSig_suspend(int signo)
|
||
{
|
||
sigset_t nmask, omask;
|
||
struct sigaction act;
|
||
|
||
/* Suppress job started/continued messages */
|
||
make_suspended = 1;
|
||
|
||
/* Pass the signal onto every job */
|
||
JobCondPassSig(signo);
|
||
|
||
/*
|
||
* Send ourselves the signal now we've given the message to everyone else.
|
||
* Note we block everything else possible while we're getting the signal.
|
||
* This ensures that all our jobs get continued when we wake up before
|
||
* we take any other signal.
|
||
*/
|
||
sigfillset(&nmask);
|
||
sigdelset(&nmask, signo);
|
||
(void)sigprocmask(SIG_SETMASK, &nmask, &omask);
|
||
|
||
act.sa_handler = SIG_DFL;
|
||
sigemptyset(&act.sa_mask);
|
||
act.sa_flags = 0;
|
||
(void)sigaction(signo, &act, NULL);
|
||
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(debug_file,
|
||
"JobPassSig passing signal %d to self.\n", signo);
|
||
}
|
||
|
||
(void)kill(getpid(), signo);
|
||
|
||
/*
|
||
* We've been continued.
|
||
*
|
||
* A whole host of signals continue to happen!
|
||
* SIGCHLD for any processes that actually suspended themselves.
|
||
* SIGCHLD for any processes that exited while we were alseep.
|
||
* The SIGCONT that actually caused us to wakeup.
|
||
*
|
||
* Since we defer passing the SIGCONT on to our children until
|
||
* the main processing loop, we can be sure that all the SIGCHLD
|
||
* events will have happened by then - and that the waitpid() will
|
||
* collect the child 'suspended' events.
|
||
* For correct sequencing we just need to ensure we process the
|
||
* waitpid() before passign on the SIGCONT.
|
||
*
|
||
* In any case nothing else is needed here.
|
||
*/
|
||
|
||
/* Restore handler and signal mask */
|
||
act.sa_handler = JobPassSig_suspend;
|
||
(void)sigaction(signo, &act, NULL);
|
||
(void)sigprocmask(SIG_SETMASK, &omask, NULL);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobFindPid --
|
||
* Compare the pid of the job with the given pid and return 0 if they
|
||
* are equal. This function is called from Job_CatchChildren
|
||
* to find the job descriptor of the finished job.
|
||
*
|
||
* Input:
|
||
* job job to examine
|
||
* pid process id desired
|
||
*
|
||
* Results:
|
||
* Job with matching pid
|
||
*
|
||
* Side Effects:
|
||
* None
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static Job *
|
||
JobFindPid(int pid, int status, Boolean isJobs)
|
||
{
|
||
Job *job;
|
||
|
||
for (job = job_table; job < job_table_end; job++) {
|
||
if ((job->job_state == status) && job->pid == pid)
|
||
return job;
|
||
}
|
||
if (DEBUG(JOB) && isJobs)
|
||
job_table_dump("no pid");
|
||
return NULL;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobPrintCommand --
|
||
* Put out another command for the given job. If the command starts
|
||
* with an @ or a - we process it specially. In the former case,
|
||
* so long as the -s and -n flags weren't given to make, we stick
|
||
* a shell-specific echoOff command in the script. In the latter,
|
||
* we ignore errors for the entire job, unless the shell has error
|
||
* control.
|
||
* If the command is just "..." we take all future commands for this
|
||
* job to be commands to be executed once the entire graph has been
|
||
* made and return non-zero to signal that the end of the commands
|
||
* was reached. These commands are later attached to the postCommands
|
||
* node and executed by Job_End when all things are done.
|
||
* This function is called from JobStart via Lst_ForEach.
|
||
*
|
||
* Input:
|
||
* cmdp command string to print
|
||
* jobp job for which to print it
|
||
*
|
||
* Results:
|
||
* Always 0, unless the command was "..."
|
||
*
|
||
* Side Effects:
|
||
* If the command begins with a '-' and the shell has no error control,
|
||
* the JOB_IGNERR flag is set in the job descriptor.
|
||
* If the command is "..." and we're not ignoring such things,
|
||
* tailCmds is set to the successor node of the cmd.
|
||
* numCommands is incremented if the command is actually printed.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobPrintCommand(void *cmdp, void *jobp)
|
||
{
|
||
Boolean noSpecials; /* true if we shouldn't worry about
|
||
* inserting special commands into
|
||
* the input stream. */
|
||
Boolean shutUp = FALSE; /* true if we put a no echo command
|
||
* into the command file */
|
||
Boolean errOff = FALSE; /* true if we turned error checking
|
||
* off before printing the command
|
||
* and need to turn it back on */
|
||
const char *cmdTemplate; /* Template to use when printing the
|
||
* command */
|
||
char *cmdStart; /* Start of expanded command */
|
||
char *escCmd = NULL; /* Command with quotes/backticks escaped */
|
||
char *cmd = (char *)cmdp;
|
||
Job *job = (Job *)jobp;
|
||
int i, j;
|
||
|
||
noSpecials = NoExecute(job->node);
|
||
|
||
if (strcmp(cmd, "...") == 0) {
|
||
job->node->type |= OP_SAVE_CMDS;
|
||
if ((job->flags & JOB_IGNDOTS) == 0) {
|
||
job->tailCmds = Lst_Succ(Lst_Member(job->node->commands,
|
||
cmd));
|
||
return 1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
#define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \
|
||
(void)fprintf(debug_file, fmt, arg); \
|
||
} \
|
||
(void)fprintf(job->cmdFILE, fmt, arg); \
|
||
(void)fflush(job->cmdFILE);
|
||
|
||
numCommands += 1;
|
||
|
||
cmdStart = cmd = Var_Subst(NULL, cmd, job->node, VARF_WANTRES);
|
||
|
||
cmdTemplate = "%s\n";
|
||
|
||
/*
|
||
* Check for leading @' and -'s to control echoing and error checking.
|
||
*/
|
||
while (*cmd == '@' || *cmd == '-' || (*cmd == '+')) {
|
||
switch (*cmd) {
|
||
case '@':
|
||
shutUp = DEBUG(LOUD) ? FALSE : TRUE;
|
||
break;
|
||
case '-':
|
||
errOff = TRUE;
|
||
break;
|
||
case '+':
|
||
if (noSpecials) {
|
||
/*
|
||
* We're not actually executing anything...
|
||
* but this one needs to be - use compat mode just for it.
|
||
*/
|
||
CompatRunCommand(cmdp, job->node);
|
||
free(cmdStart);
|
||
return 0;
|
||
}
|
||
break;
|
||
}
|
||
cmd++;
|
||
}
|
||
|
||
while (isspace((unsigned char) *cmd))
|
||
cmd++;
|
||
|
||
/*
|
||
* If the shell doesn't have error control the alternate echo'ing will
|
||
* be done (to avoid showing additional error checking code)
|
||
* and this will need the characters '$ ` \ "' escaped
|
||
*/
|
||
|
||
if (!commandShell->hasErrCtl) {
|
||
/* Worst that could happen is every char needs escaping. */
|
||
escCmd = bmake_malloc((strlen(cmd) * 2) + 1);
|
||
for (i = 0, j= 0; cmd[i] != '\0'; i++, j++) {
|
||
if (cmd[i] == '$' || cmd[i] == '`' || cmd[i] == '\\' ||
|
||
cmd[i] == '"')
|
||
escCmd[j++] = '\\';
|
||
escCmd[j] = cmd[i];
|
||
}
|
||
escCmd[j] = 0;
|
||
}
|
||
|
||
if (shutUp) {
|
||
if (!(job->flags & JOB_SILENT) && !noSpecials &&
|
||
commandShell->hasEchoCtl) {
|
||
DBPRINTF("%s\n", commandShell->echoOff);
|
||
} else {
|
||
if (commandShell->hasErrCtl)
|
||
shutUp = FALSE;
|
||
}
|
||
}
|
||
|
||
if (errOff) {
|
||
if (!noSpecials) {
|
||
if (commandShell->hasErrCtl) {
|
||
/*
|
||
* we don't want the error-control commands showing
|
||
* up either, so we turn off echoing while executing
|
||
* them. We could put another field in the shell
|
||
* structure to tell JobDoOutput to look for this
|
||
* string too, but why make it any more complex than
|
||
* it already is?
|
||
*/
|
||
if (!(job->flags & JOB_SILENT) && !shutUp &&
|
||
commandShell->hasEchoCtl) {
|
||
DBPRINTF("%s\n", commandShell->echoOff);
|
||
DBPRINTF("%s\n", commandShell->ignErr);
|
||
DBPRINTF("%s\n", commandShell->echoOn);
|
||
} else {
|
||
DBPRINTF("%s\n", commandShell->ignErr);
|
||
}
|
||
} else if (commandShell->ignErr &&
|
||
(*commandShell->ignErr != '\0'))
|
||
{
|
||
/*
|
||
* The shell has no error control, so we need to be
|
||
* weird to get it to ignore any errors from the command.
|
||
* If echoing is turned on, we turn it off and use the
|
||
* errCheck template to echo the command. Leave echoing
|
||
* off so the user doesn't see the weirdness we go through
|
||
* to ignore errors. Set cmdTemplate to use the weirdness
|
||
* instead of the simple "%s\n" template.
|
||
*/
|
||
job->flags |= JOB_IGNERR;
|
||
if (!(job->flags & JOB_SILENT) && !shutUp) {
|
||
if (commandShell->hasEchoCtl) {
|
||
DBPRINTF("%s\n", commandShell->echoOff);
|
||
}
|
||
DBPRINTF(commandShell->errCheck, escCmd);
|
||
shutUp = TRUE;
|
||
} else {
|
||
if (!shutUp) {
|
||
DBPRINTF(commandShell->errCheck, escCmd);
|
||
}
|
||
}
|
||
cmdTemplate = commandShell->ignErr;
|
||
/*
|
||
* The error ignoration (hee hee) is already taken care
|
||
* of by the ignErr template, so pretend error checking
|
||
* is still on.
|
||
*/
|
||
errOff = FALSE;
|
||
} else {
|
||
errOff = FALSE;
|
||
}
|
||
} else {
|
||
errOff = FALSE;
|
||
}
|
||
} else {
|
||
|
||
/*
|
||
* If errors are being checked and the shell doesn't have error control
|
||
* but does supply an errOut template, then setup commands to run
|
||
* through it.
|
||
*/
|
||
|
||
if (!commandShell->hasErrCtl && commandShell->errOut &&
|
||
(*commandShell->errOut != '\0')) {
|
||
if (!(job->flags & JOB_SILENT) && !shutUp) {
|
||
if (commandShell->hasEchoCtl) {
|
||
DBPRINTF("%s\n", commandShell->echoOff);
|
||
}
|
||
DBPRINTF(commandShell->errCheck, escCmd);
|
||
shutUp = TRUE;
|
||
}
|
||
/* If it's a comment line or blank, treat as an ignored error */
|
||
if ((escCmd[0] == commandShell->commentChar) ||
|
||
(escCmd[0] == 0))
|
||
cmdTemplate = commandShell->ignErr;
|
||
else
|
||
cmdTemplate = commandShell->errOut;
|
||
errOff = FALSE;
|
||
}
|
||
}
|
||
|
||
if (DEBUG(SHELL) && strcmp(shellName, "sh") == 0 &&
|
||
(job->flags & JOB_TRACED) == 0) {
|
||
DBPRINTF("set -%s\n", "x");
|
||
job->flags |= JOB_TRACED;
|
||
}
|
||
|
||
DBPRINTF(cmdTemplate, cmd);
|
||
free(cmdStart);
|
||
free(escCmd);
|
||
if (errOff) {
|
||
/*
|
||
* If echoing is already off, there's no point in issuing the
|
||
* echoOff command. Otherwise we issue it and pretend it was on
|
||
* for the whole command...
|
||
*/
|
||
if (!shutUp && !(job->flags & JOB_SILENT) && commandShell->hasEchoCtl){
|
||
DBPRINTF("%s\n", commandShell->echoOff);
|
||
shutUp = TRUE;
|
||
}
|
||
DBPRINTF("%s\n", commandShell->errCheck);
|
||
}
|
||
if (shutUp && commandShell->hasEchoCtl) {
|
||
DBPRINTF("%s\n", commandShell->echoOn);
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobSaveCommand --
|
||
* Save a command to be executed when everything else is done.
|
||
* Callback function for JobFinish...
|
||
*
|
||
* Results:
|
||
* Always returns 0
|
||
*
|
||
* Side Effects:
|
||
* The command is tacked onto the end of postCommands's commands list.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobSaveCommand(void *cmd, void *gn)
|
||
{
|
||
cmd = Var_Subst(NULL, (char *)cmd, (GNode *)gn, VARF_WANTRES);
|
||
(void)Lst_AtEnd(postCommands->commands, cmd);
|
||
return(0);
|
||
}
|
||
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobClose --
|
||
* Called to close both input and output pipes when a job is finished.
|
||
*
|
||
* Results:
|
||
* Nada
|
||
*
|
||
* Side Effects:
|
||
* The file descriptors associated with the job are closed.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobClose(Job *job)
|
||
{
|
||
clearfd(job);
|
||
(void)close(job->outPipe);
|
||
job->outPipe = -1;
|
||
|
||
JobDoOutput(job, TRUE);
|
||
(void)close(job->inPipe);
|
||
job->inPipe = -1;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobFinish --
|
||
* Do final processing for the given job including updating
|
||
* parents and starting new jobs as available/necessary. Note
|
||
* that we pay no attention to the JOB_IGNERR flag here.
|
||
* This is because when we're called because of a noexecute flag
|
||
* or something, jstat.w_status is 0 and when called from
|
||
* Job_CatchChildren, the status is zeroed if it s/b ignored.
|
||
*
|
||
* Input:
|
||
* job job to finish
|
||
* status sub-why job went away
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* Final commands for the job are placed on postCommands.
|
||
*
|
||
* If we got an error and are aborting (aborting == ABORT_ERROR) and
|
||
* the job list is now empty, we are done for the day.
|
||
* If we recognized an error (errors !=0), we set the aborting flag
|
||
* to ABORT_ERROR so no more jobs will be started.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
/*ARGSUSED*/
|
||
static void
|
||
JobFinish (Job *job, WAIT_T status)
|
||
{
|
||
Boolean done, return_job_token;
|
||
|
||
if (DEBUG(JOB)) {
|
||
fprintf(debug_file, "Jobfinish: %d [%s], status %d\n",
|
||
job->pid, job->node->name, status);
|
||
}
|
||
|
||
if ((WIFEXITED(status) &&
|
||
(((WEXITSTATUS(status) != 0) && !(job->flags & JOB_IGNERR)))) ||
|
||
WIFSIGNALED(status))
|
||
{
|
||
/*
|
||
* If it exited non-zero and either we're doing things our
|
||
* way or we're not ignoring errors, the job is finished.
|
||
* Similarly, if the shell died because of a signal
|
||
* the job is also finished. In these
|
||
* cases, finish out the job's output before printing the exit
|
||
* status...
|
||
*/
|
||
JobClose(job);
|
||
if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
|
||
(void)fclose(job->cmdFILE);
|
||
job->cmdFILE = NULL;
|
||
}
|
||
done = TRUE;
|
||
} else if (WIFEXITED(status)) {
|
||
/*
|
||
* Deal with ignored errors in -B mode. We need to print a message
|
||
* telling of the ignored error as well as setting status.w_status
|
||
* to 0 so the next command gets run. To do this, we set done to be
|
||
* TRUE if in -B mode and the job exited non-zero.
|
||
*/
|
||
done = WEXITSTATUS(status) != 0;
|
||
/*
|
||
* Old comment said: "Note we don't
|
||
* want to close down any of the streams until we know we're at the
|
||
* end."
|
||
* But we do. Otherwise when are we going to print the rest of the
|
||
* stuff?
|
||
*/
|
||
JobClose(job);
|
||
} else {
|
||
/*
|
||
* No need to close things down or anything.
|
||
*/
|
||
done = FALSE;
|
||
}
|
||
|
||
if (done) {
|
||
if (WIFEXITED(status)) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(debug_file, "Process %d [%s] exited.\n",
|
||
job->pid, job->node->name);
|
||
}
|
||
if (WEXITSTATUS(status) != 0) {
|
||
if (job->node != lastNode) {
|
||
MESSAGE(stdout, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
#ifdef USE_META
|
||
if (useMeta) {
|
||
meta_job_error(job, job->node, job->flags, WEXITSTATUS(status));
|
||
}
|
||
#endif
|
||
(void)printf("*** [%s] Error code %d%s\n",
|
||
job->node->name,
|
||
WEXITSTATUS(status),
|
||
(job->flags & JOB_IGNERR) ? " (ignored)" : "");
|
||
if (job->flags & JOB_IGNERR) {
|
||
WAIT_STATUS(status) = 0;
|
||
} else {
|
||
if (deleteOnError) {
|
||
JobDeleteTarget(job->node);
|
||
}
|
||
PrintOnError(job->node, NULL);
|
||
}
|
||
} else if (DEBUG(JOB)) {
|
||
if (job->node != lastNode) {
|
||
MESSAGE(stdout, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
(void)printf("*** [%s] Completed successfully\n",
|
||
job->node->name);
|
||
}
|
||
} else {
|
||
if (job->node != lastNode) {
|
||
MESSAGE(stdout, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
(void)printf("*** [%s] Signal %d\n",
|
||
job->node->name, WTERMSIG(status));
|
||
if (deleteOnError) {
|
||
JobDeleteTarget(job->node);
|
||
}
|
||
}
|
||
(void)fflush(stdout);
|
||
}
|
||
|
||
#ifdef USE_META
|
||
if (useMeta) {
|
||
int x;
|
||
|
||
if ((x = meta_job_finish(job)) != 0 && status == 0) {
|
||
status = x;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
return_job_token = FALSE;
|
||
|
||
Trace_Log(JOBEND, job);
|
||
if (!(job->flags & JOB_SPECIAL)) {
|
||
if ((WAIT_STATUS(status) != 0) ||
|
||
(aborting == ABORT_ERROR) ||
|
||
(aborting == ABORT_INTERRUPT))
|
||
return_job_token = TRUE;
|
||
}
|
||
|
||
if ((aborting != ABORT_ERROR) && (aborting != ABORT_INTERRUPT) &&
|
||
(WAIT_STATUS(status) == 0)) {
|
||
/*
|
||
* As long as we aren't aborting and the job didn't return a non-zero
|
||
* status that we shouldn't ignore, we call Make_Update to update
|
||
* the parents. In addition, any saved commands for the node are placed
|
||
* on the .END target.
|
||
*/
|
||
if (job->tailCmds != NULL) {
|
||
Lst_ForEachFrom(job->node->commands, job->tailCmds,
|
||
JobSaveCommand,
|
||
job->node);
|
||
}
|
||
job->node->made = MADE;
|
||
if (!(job->flags & JOB_SPECIAL))
|
||
return_job_token = TRUE;
|
||
Make_Update(job->node);
|
||
job->job_state = JOB_ST_FREE;
|
||
} else if (WAIT_STATUS(status)) {
|
||
errors += 1;
|
||
job->job_state = JOB_ST_FREE;
|
||
}
|
||
|
||
/*
|
||
* Set aborting if any error.
|
||
*/
|
||
if (errors && !keepgoing && (aborting != ABORT_INTERRUPT)) {
|
||
/*
|
||
* If we found any errors in this batch of children and the -k flag
|
||
* wasn't given, we set the aborting flag so no more jobs get
|
||
* started.
|
||
*/
|
||
aborting = ABORT_ERROR;
|
||
}
|
||
|
||
if (return_job_token)
|
||
Job_TokenReturn();
|
||
|
||
if (aborting == ABORT_ERROR && jobTokensRunning == 0) {
|
||
/*
|
||
* If we are aborting and the job table is now empty, we finish.
|
||
*/
|
||
Finish(errors);
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_Touch --
|
||
* Touch the given target. Called by JobStart when the -t flag was
|
||
* given
|
||
*
|
||
* Input:
|
||
* gn the node of the file to touch
|
||
* silent TRUE if should not print message
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* The data modification of the file is changed. In addition, if the
|
||
* file did not exist, it is created.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_Touch(GNode *gn, Boolean silent)
|
||
{
|
||
int streamID; /* ID of stream opened to do the touch */
|
||
struct utimbuf times; /* Times for utime() call */
|
||
|
||
if (gn->type & (OP_JOIN|OP_USE|OP_USEBEFORE|OP_EXEC|OP_OPTIONAL|
|
||
OP_SPECIAL|OP_PHONY)) {
|
||
/*
|
||
* .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
|
||
* and, as such, shouldn't really be created.
|
||
*/
|
||
return;
|
||
}
|
||
|
||
if (!silent || NoExecute(gn)) {
|
||
(void)fprintf(stdout, "touch %s\n", gn->name);
|
||
(void)fflush(stdout);
|
||
}
|
||
|
||
if (NoExecute(gn)) {
|
||
return;
|
||
}
|
||
|
||
if (gn->type & OP_ARCHV) {
|
||
Arch_Touch(gn);
|
||
} else if (gn->type & OP_LIB) {
|
||
Arch_TouchLib(gn);
|
||
} else {
|
||
char *file = gn->path ? gn->path : gn->name;
|
||
|
||
times.actime = times.modtime = now;
|
||
if (utime(file, ×) < 0){
|
||
streamID = open(file, O_RDWR | O_CREAT, 0666);
|
||
|
||
if (streamID >= 0) {
|
||
char c;
|
||
|
||
/*
|
||
* Read and write a byte to the file to change the
|
||
* modification time, then close the file.
|
||
*/
|
||
if (read(streamID, &c, 1) == 1) {
|
||
(void)lseek(streamID, (off_t)0, SEEK_SET);
|
||
while (write(streamID, &c, 1) == -1 && errno == EAGAIN)
|
||
continue;
|
||
}
|
||
|
||
(void)close(streamID);
|
||
} else {
|
||
(void)fprintf(stdout, "*** couldn't touch %s: %s",
|
||
file, strerror(errno));
|
||
(void)fflush(stdout);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_CheckCommands --
|
||
* Make sure the given node has all the commands it needs.
|
||
*
|
||
* Input:
|
||
* gn The target whose commands need verifying
|
||
* abortProc Function to abort with message
|
||
*
|
||
* Results:
|
||
* TRUE if the commands list is/was ok.
|
||
*
|
||
* Side Effects:
|
||
* The node will have commands from the .DEFAULT rule added to it
|
||
* if it needs them.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
Boolean
|
||
Job_CheckCommands(GNode *gn, void (*abortProc)(const char *, ...))
|
||
{
|
||
if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
|
||
((gn->type & OP_LIB) == 0 || Lst_IsEmpty(gn->children))) {
|
||
/*
|
||
* No commands. Look for .DEFAULT rule from which we might infer
|
||
* commands
|
||
*/
|
||
if ((DEFAULT != NULL) && !Lst_IsEmpty(DEFAULT->commands) &&
|
||
(gn->type & OP_SPECIAL) == 0) {
|
||
char *p1;
|
||
/*
|
||
* Make only looks for a .DEFAULT if the node was never the
|
||
* target of an operator, so that's what we do too. If
|
||
* a .DEFAULT was given, we substitute its commands for gn's
|
||
* commands and set the IMPSRC variable to be the target's name
|
||
* The DEFAULT node acts like a transformation rule, in that
|
||
* gn also inherits any attributes or sources attached to
|
||
* .DEFAULT itself.
|
||
*/
|
||
Make_HandleUse(DEFAULT, gn);
|
||
Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), gn, 0);
|
||
free(p1);
|
||
} else if (Dir_MTime(gn, 0) == 0 && (gn->type & OP_SPECIAL) == 0) {
|
||
/*
|
||
* The node wasn't the target of an operator we have no .DEFAULT
|
||
* rule to go on and the target doesn't already exist. There's
|
||
* nothing more we can do for this branch. If the -k flag wasn't
|
||
* given, we stop in our tracks, otherwise we just don't update
|
||
* this node's parents so they never get examined.
|
||
*/
|
||
static const char msg[] = ": don't know how to make";
|
||
|
||
if (gn->flags & FROM_DEPEND) {
|
||
if (!Job_RunTarget(".STALE", gn->fname))
|
||
fprintf(stdout, "%s: %s, %d: ignoring stale %s for %s\n",
|
||
progname, gn->fname, gn->lineno, makeDependfile,
|
||
gn->name);
|
||
return TRUE;
|
||
}
|
||
|
||
if (gn->type & OP_OPTIONAL) {
|
||
(void)fprintf(stdout, "%s%s %s (ignored)\n", progname,
|
||
msg, gn->name);
|
||
(void)fflush(stdout);
|
||
} else if (keepgoing) {
|
||
(void)fprintf(stdout, "%s%s %s (continuing)\n", progname,
|
||
msg, gn->name);
|
||
(void)fflush(stdout);
|
||
return FALSE;
|
||
} else {
|
||
(*abortProc)("%s%s %s. Stop", progname, msg, gn->name);
|
||
return FALSE;
|
||
}
|
||
}
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobExec --
|
||
* Execute the shell for the given job. Called from JobStart
|
||
*
|
||
* Input:
|
||
* job Job to execute
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* A shell is executed, outputs is altered and the Job structure added
|
||
* to the job table.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobExec(Job *job, char **argv)
|
||
{
|
||
int cpid; /* ID of new child */
|
||
sigset_t mask;
|
||
|
||
job->flags &= ~JOB_TRACED;
|
||
|
||
if (DEBUG(JOB)) {
|
||
int i;
|
||
|
||
(void)fprintf(debug_file, "Running %s %sly\n", job->node->name, "local");
|
||
(void)fprintf(debug_file, "\tCommand: ");
|
||
for (i = 0; argv[i] != NULL; i++) {
|
||
(void)fprintf(debug_file, "%s ", argv[i]);
|
||
}
|
||
(void)fprintf(debug_file, "\n");
|
||
}
|
||
|
||
/*
|
||
* Some jobs produce no output and it's disconcerting to have
|
||
* no feedback of their running (since they produce no output, the
|
||
* banner with their name in it never appears). This is an attempt to
|
||
* provide that feedback, even if nothing follows it.
|
||
*/
|
||
if ((lastNode != job->node) && !(job->flags & JOB_SILENT)) {
|
||
MESSAGE(stdout, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
|
||
/* No interruptions until this job is on the `jobs' list */
|
||
JobSigLock(&mask);
|
||
|
||
/* Pre-emptively mark job running, pid still zero though */
|
||
job->job_state = JOB_ST_RUNNING;
|
||
|
||
cpid = vFork();
|
||
if (cpid == -1)
|
||
Punt("Cannot vfork: %s", strerror(errno));
|
||
|
||
if (cpid == 0) {
|
||
/* Child */
|
||
sigset_t tmask;
|
||
|
||
#ifdef USE_META
|
||
if (useMeta) {
|
||
meta_job_child(job);
|
||
}
|
||
#endif
|
||
/*
|
||
* Reset all signal handlers; this is necessary because we also
|
||
* need to unblock signals before we exec(2).
|
||
*/
|
||
JobSigReset();
|
||
|
||
/* Now unblock signals */
|
||
sigemptyset(&tmask);
|
||
JobSigUnlock(&tmask);
|
||
|
||
/*
|
||
* Must duplicate the input stream down to the child's input and
|
||
* reset it to the beginning (again). Since the stream was marked
|
||
* close-on-exec, we must clear that bit in the new input.
|
||
*/
|
||
if (dup2(FILENO(job->cmdFILE), 0) == -1) {
|
||
execError("dup2", "job->cmdFILE");
|
||
_exit(1);
|
||
}
|
||
if (fcntl(0, F_SETFD, 0) == -1) {
|
||
execError("fcntl clear close-on-exec", "stdin");
|
||
_exit(1);
|
||
}
|
||
if (lseek(0, (off_t)0, SEEK_SET) == -1) {
|
||
execError("lseek to 0", "stdin");
|
||
_exit(1);
|
||
}
|
||
|
||
if (Always_pass_job_queue ||
|
||
(job->node->type & (OP_MAKE | OP_SUBMAKE))) {
|
||
/*
|
||
* Pass job token pipe to submakes.
|
||
*/
|
||
if (fcntl(tokenWaitJob.inPipe, F_SETFD, 0) == -1) {
|
||
execError("clear close-on-exec", "tokenWaitJob.inPipe");
|
||
_exit(1);
|
||
}
|
||
if (fcntl(tokenWaitJob.outPipe, F_SETFD, 0) == -1) {
|
||
execError("clear close-on-exec", "tokenWaitJob.outPipe");
|
||
_exit(1);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Set up the child's output to be routed through the pipe
|
||
* we've created for it.
|
||
*/
|
||
if (dup2(job->outPipe, 1) == -1) {
|
||
execError("dup2", "job->outPipe");
|
||
_exit(1);
|
||
}
|
||
/*
|
||
* The output channels are marked close on exec. This bit was
|
||
* duplicated by the dup2(on some systems), so we have to clear
|
||
* it before routing the shell's error output to the same place as
|
||
* its standard output.
|
||
*/
|
||
if (fcntl(1, F_SETFD, 0) == -1) {
|
||
execError("clear close-on-exec", "stdout");
|
||
_exit(1);
|
||
}
|
||
if (dup2(1, 2) == -1) {
|
||
execError("dup2", "1, 2");
|
||
_exit(1);
|
||
}
|
||
|
||
/*
|
||
* We want to switch the child into a different process family so
|
||
* we can kill it and all its descendants in one fell swoop,
|
||
* by killing its process family, but not commit suicide.
|
||
*/
|
||
#if defined(HAVE_SETPGID)
|
||
(void)setpgid(0, getpid());
|
||
#else
|
||
#if defined(HAVE_SETSID)
|
||
/* XXX: dsl - I'm sure this should be setpgrp()... */
|
||
(void)setsid();
|
||
#else
|
||
(void)setpgrp(0, getpid());
|
||
#endif
|
||
#endif
|
||
|
||
Var_ExportVars();
|
||
|
||
(void)execv(shellPath, argv);
|
||
execError("exec", shellPath);
|
||
_exit(1);
|
||
}
|
||
|
||
/* Parent, continuing after the child exec */
|
||
job->pid = cpid;
|
||
|
||
Trace_Log(JOBSTART, job);
|
||
|
||
/*
|
||
* Set the current position in the buffer to the beginning
|
||
* and mark another stream to watch in the outputs mask
|
||
*/
|
||
job->curPos = 0;
|
||
|
||
watchfd(job);
|
||
|
||
if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
|
||
(void)fclose(job->cmdFILE);
|
||
job->cmdFILE = NULL;
|
||
}
|
||
|
||
/*
|
||
* Now the job is actually running, add it to the table.
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
fprintf(debug_file, "JobExec(%s): pid %d added to jobs table\n",
|
||
job->node->name, job->pid);
|
||
job_table_dump("job started");
|
||
}
|
||
JobSigUnlock(&mask);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobMakeArgv --
|
||
* Create the argv needed to execute the shell for a given job.
|
||
*
|
||
*
|
||
* Results:
|
||
*
|
||
* Side Effects:
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobMakeArgv(Job *job, char **argv)
|
||
{
|
||
int argc;
|
||
static char args[10]; /* For merged arguments */
|
||
|
||
argv[0] = UNCONST(shellName);
|
||
argc = 1;
|
||
|
||
if ((commandShell->exit && (*commandShell->exit != '-')) ||
|
||
(commandShell->echo && (*commandShell->echo != '-')))
|
||
{
|
||
/*
|
||
* At least one of the flags doesn't have a minus before it, so
|
||
* merge them together. Have to do this because the *(&(@*#*&#$#
|
||
* Bourne shell thinks its second argument is a file to source.
|
||
* Grrrr. Note the ten-character limitation on the combined arguments.
|
||
*/
|
||
(void)snprintf(args, sizeof(args), "-%s%s",
|
||
((job->flags & JOB_IGNERR) ? "" :
|
||
(commandShell->exit ? commandShell->exit : "")),
|
||
((job->flags & JOB_SILENT) ? "" :
|
||
(commandShell->echo ? commandShell->echo : "")));
|
||
|
||
if (args[1]) {
|
||
argv[argc] = args;
|
||
argc++;
|
||
}
|
||
} else {
|
||
if (!(job->flags & JOB_IGNERR) && commandShell->exit) {
|
||
argv[argc] = UNCONST(commandShell->exit);
|
||
argc++;
|
||
}
|
||
if (!(job->flags & JOB_SILENT) && commandShell->echo) {
|
||
argv[argc] = UNCONST(commandShell->echo);
|
||
argc++;
|
||
}
|
||
}
|
||
argv[argc] = NULL;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobStart --
|
||
* Start a target-creation process going for the target described
|
||
* by the graph node gn.
|
||
*
|
||
* Input:
|
||
* gn target to create
|
||
* flags flags for the job to override normal ones.
|
||
* e.g. JOB_SPECIAL or JOB_IGNDOTS
|
||
* previous The previous Job structure for this node, if any.
|
||
*
|
||
* Results:
|
||
* JOB_ERROR if there was an error in the commands, JOB_FINISHED
|
||
* if there isn't actually anything left to do for the job and
|
||
* JOB_RUNNING if the job has been started.
|
||
*
|
||
* Side Effects:
|
||
* A new Job node is created and added to the list of running
|
||
* jobs. PMake is forked and a child shell created.
|
||
*
|
||
* NB: I'm fairly sure that this code is never called with JOB_SPECIAL set
|
||
* JOB_IGNDOTS is never set (dsl)
|
||
* Also the return value is ignored by everyone.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobStart(GNode *gn, int flags)
|
||
{
|
||
Job *job; /* new job descriptor */
|
||
char *argv[10]; /* Argument vector to shell */
|
||
Boolean cmdsOK; /* true if the nodes commands were all right */
|
||
Boolean noExec; /* Set true if we decide not to run the job */
|
||
int tfd; /* File descriptor to the temp file */
|
||
|
||
for (job = job_table; job < job_table_end; job++) {
|
||
if (job->job_state == JOB_ST_FREE)
|
||
break;
|
||
}
|
||
if (job >= job_table_end)
|
||
Punt("JobStart no job slots vacant");
|
||
|
||
memset(job, 0, sizeof *job);
|
||
job->job_state = JOB_ST_SETUP;
|
||
if (gn->type & OP_SPECIAL)
|
||
flags |= JOB_SPECIAL;
|
||
|
||
job->node = gn;
|
||
job->tailCmds = NULL;
|
||
|
||
/*
|
||
* Set the initial value of the flags for this job based on the global
|
||
* ones and the node's attributes... Any flags supplied by the caller
|
||
* are also added to the field.
|
||
*/
|
||
job->flags = 0;
|
||
if (Targ_Ignore(gn)) {
|
||
job->flags |= JOB_IGNERR;
|
||
}
|
||
if (Targ_Silent(gn)) {
|
||
job->flags |= JOB_SILENT;
|
||
}
|
||
job->flags |= flags;
|
||
|
||
/*
|
||
* Check the commands now so any attributes from .DEFAULT have a chance
|
||
* to migrate to the node
|
||
*/
|
||
cmdsOK = Job_CheckCommands(gn, Error);
|
||
|
||
job->inPollfd = NULL;
|
||
/*
|
||
* If the -n flag wasn't given, we open up OUR (not the child's)
|
||
* temporary file to stuff commands in it. The thing is rd/wr so we don't
|
||
* need to reopen it to feed it to the shell. If the -n flag *was* given,
|
||
* we just set the file to be stdout. Cute, huh?
|
||
*/
|
||
if (((gn->type & OP_MAKE) && !(noRecursiveExecute)) ||
|
||
(!noExecute && !touchFlag)) {
|
||
/*
|
||
* tfile is the name of a file into which all shell commands are
|
||
* put. It is removed before the child shell is executed, unless
|
||
* DEBUG(SCRIPT) is set.
|
||
*/
|
||
char *tfile;
|
||
sigset_t mask;
|
||
/*
|
||
* We're serious here, but if the commands were bogus, we're
|
||
* also dead...
|
||
*/
|
||
if (!cmdsOK) {
|
||
PrintOnError(gn, NULL); /* provide some clue */
|
||
DieHorribly();
|
||
}
|
||
|
||
JobSigLock(&mask);
|
||
tfd = mkTempFile(TMPPAT, &tfile);
|
||
if (!DEBUG(SCRIPT))
|
||
(void)eunlink(tfile);
|
||
JobSigUnlock(&mask);
|
||
|
||
job->cmdFILE = fdopen(tfd, "w+");
|
||
if (job->cmdFILE == NULL) {
|
||
Punt("Could not fdopen %s", tfile);
|
||
}
|
||
(void)fcntl(FILENO(job->cmdFILE), F_SETFD, FD_CLOEXEC);
|
||
/*
|
||
* Send the commands to the command file, flush all its buffers then
|
||
* rewind and remove the thing.
|
||
*/
|
||
noExec = FALSE;
|
||
|
||
#ifdef USE_META
|
||
if (useMeta) {
|
||
meta_job_start(job, gn);
|
||
if (Targ_Silent(gn)) { /* might have changed */
|
||
job->flags |= JOB_SILENT;
|
||
}
|
||
}
|
||
#endif
|
||
/*
|
||
* We can do all the commands at once. hooray for sanity
|
||
*/
|
||
numCommands = 0;
|
||
Lst_ForEach(gn->commands, JobPrintCommand, job);
|
||
|
||
/*
|
||
* If we didn't print out any commands to the shell script,
|
||
* there's not much point in executing the shell, is there?
|
||
*/
|
||
if (numCommands == 0) {
|
||
noExec = TRUE;
|
||
}
|
||
|
||
free(tfile);
|
||
} else if (NoExecute(gn)) {
|
||
/*
|
||
* Not executing anything -- just print all the commands to stdout
|
||
* in one fell swoop. This will still set up job->tailCmds correctly.
|
||
*/
|
||
if (lastNode != gn) {
|
||
MESSAGE(stdout, gn);
|
||
lastNode = gn;
|
||
}
|
||
job->cmdFILE = stdout;
|
||
/*
|
||
* Only print the commands if they're ok, but don't die if they're
|
||
* not -- just let the user know they're bad and keep going. It
|
||
* doesn't do any harm in this case and may do some good.
|
||
*/
|
||
if (cmdsOK) {
|
||
Lst_ForEach(gn->commands, JobPrintCommand, job);
|
||
}
|
||
/*
|
||
* Don't execute the shell, thank you.
|
||
*/
|
||
noExec = TRUE;
|
||
} else {
|
||
/*
|
||
* Just touch the target and note that no shell should be executed.
|
||
* Set cmdFILE to stdout to make life easier. Check the commands, too,
|
||
* but don't die if they're no good -- it does no harm to keep working
|
||
* up the graph.
|
||
*/
|
||
job->cmdFILE = stdout;
|
||
Job_Touch(gn, job->flags&JOB_SILENT);
|
||
noExec = TRUE;
|
||
}
|
||
/* Just in case it isn't already... */
|
||
(void)fflush(job->cmdFILE);
|
||
|
||
/*
|
||
* If we're not supposed to execute a shell, don't.
|
||
*/
|
||
if (noExec) {
|
||
if (!(job->flags & JOB_SPECIAL))
|
||
Job_TokenReturn();
|
||
/*
|
||
* Unlink and close the command file if we opened one
|
||
*/
|
||
if (job->cmdFILE != stdout) {
|
||
if (job->cmdFILE != NULL) {
|
||
(void)fclose(job->cmdFILE);
|
||
job->cmdFILE = NULL;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* We only want to work our way up the graph if we aren't here because
|
||
* the commands for the job were no good.
|
||
*/
|
||
if (cmdsOK && aborting == 0) {
|
||
if (job->tailCmds != NULL) {
|
||
Lst_ForEachFrom(job->node->commands, job->tailCmds,
|
||
JobSaveCommand,
|
||
job->node);
|
||
}
|
||
job->node->made = MADE;
|
||
Make_Update(job->node);
|
||
}
|
||
job->job_state = JOB_ST_FREE;
|
||
return cmdsOK ? JOB_FINISHED : JOB_ERROR;
|
||
}
|
||
|
||
/*
|
||
* Set up the control arguments to the shell. This is based on the flags
|
||
* set earlier for this job.
|
||
*/
|
||
JobMakeArgv(job, argv);
|
||
|
||
/* Create the pipe by which we'll get the shell's output. */
|
||
JobCreatePipe(job, 3);
|
||
|
||
JobExec(job, argv);
|
||
return(JOB_RUNNING);
|
||
}
|
||
|
||
static char *
|
||
JobOutput(Job *job, char *cp, char *endp, int msg)
|
||
{
|
||
char *ecp;
|
||
|
||
if (commandShell->noPrint) {
|
||
ecp = Str_FindSubstring(cp, commandShell->noPrint);
|
||
while (ecp != NULL) {
|
||
if (cp != ecp) {
|
||
*ecp = '\0';
|
||
if (!beSilent && msg && job->node != lastNode) {
|
||
MESSAGE(stdout, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
/*
|
||
* The only way there wouldn't be a newline after
|
||
* this line is if it were the last in the buffer.
|
||
* however, since the non-printable comes after it,
|
||
* there must be a newline, so we don't print one.
|
||
*/
|
||
(void)fprintf(stdout, "%s", cp);
|
||
(void)fflush(stdout);
|
||
}
|
||
cp = ecp + commandShell->noPLen;
|
||
if (cp != endp) {
|
||
/*
|
||
* Still more to print, look again after skipping
|
||
* the whitespace following the non-printable
|
||
* command....
|
||
*/
|
||
cp++;
|
||
while (*cp == ' ' || *cp == '\t' || *cp == '\n') {
|
||
cp++;
|
||
}
|
||
ecp = Str_FindSubstring(cp, commandShell->noPrint);
|
||
} else {
|
||
return cp;
|
||
}
|
||
}
|
||
}
|
||
return cp;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobDoOutput --
|
||
* This function is called at different times depending on
|
||
* whether the user has specified that output is to be collected
|
||
* via pipes or temporary files. In the former case, we are called
|
||
* whenever there is something to read on the pipe. We collect more
|
||
* output from the given job and store it in the job's outBuf. If
|
||
* this makes up a line, we print it tagged by the job's identifier,
|
||
* as necessary.
|
||
* If output has been collected in a temporary file, we open the
|
||
* file and read it line by line, transfering it to our own
|
||
* output channel until the file is empty. At which point we
|
||
* remove the temporary file.
|
||
* In both cases, however, we keep our figurative eye out for the
|
||
* 'noPrint' line for the shell from which the output came. If
|
||
* we recognize a line, we don't print it. If the command is not
|
||
* alone on the line (the character after it is not \0 or \n), we
|
||
* do print whatever follows it.
|
||
*
|
||
* Input:
|
||
* job the job whose output needs printing
|
||
* finish TRUE if this is the last time we'll be called
|
||
* for this job
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* curPos may be shifted as may the contents of outBuf.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
STATIC void
|
||
JobDoOutput(Job *job, Boolean finish)
|
||
{
|
||
Boolean gotNL = FALSE; /* true if got a newline */
|
||
Boolean fbuf; /* true if our buffer filled up */
|
||
int nr; /* number of bytes read */
|
||
int i; /* auxiliary index into outBuf */
|
||
int max; /* limit for i (end of current data) */
|
||
int nRead; /* (Temporary) number of bytes read */
|
||
|
||
/*
|
||
* Read as many bytes as will fit in the buffer.
|
||
*/
|
||
end_loop:
|
||
gotNL = FALSE;
|
||
fbuf = FALSE;
|
||
|
||
nRead = read(job->inPipe, &job->outBuf[job->curPos],
|
||
JOB_BUFSIZE - job->curPos);
|
||
if (nRead < 0) {
|
||
if (errno == EAGAIN)
|
||
return;
|
||
if (DEBUG(JOB)) {
|
||
perror("JobDoOutput(piperead)");
|
||
}
|
||
nr = 0;
|
||
} else {
|
||
nr = nRead;
|
||
}
|
||
|
||
/*
|
||
* If we hit the end-of-file (the job is dead), we must flush its
|
||
* remaining output, so pretend we read a newline if there's any
|
||
* output remaining in the buffer.
|
||
* Also clear the 'finish' flag so we stop looping.
|
||
*/
|
||
if ((nr == 0) && (job->curPos != 0)) {
|
||
job->outBuf[job->curPos] = '\n';
|
||
nr = 1;
|
||
finish = FALSE;
|
||
} else if (nr == 0) {
|
||
finish = FALSE;
|
||
}
|
||
|
||
/*
|
||
* Look for the last newline in the bytes we just got. If there is
|
||
* one, break out of the loop with 'i' as its index and gotNL set
|
||
* TRUE.
|
||
*/
|
||
max = job->curPos + nr;
|
||
for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
|
||
if (job->outBuf[i] == '\n') {
|
||
gotNL = TRUE;
|
||
break;
|
||
} else if (job->outBuf[i] == '\0') {
|
||
/*
|
||
* Why?
|
||
*/
|
||
job->outBuf[i] = ' ';
|
||
}
|
||
}
|
||
|
||
if (!gotNL) {
|
||
job->curPos += nr;
|
||
if (job->curPos == JOB_BUFSIZE) {
|
||
/*
|
||
* If we've run out of buffer space, we have no choice
|
||
* but to print the stuff. sigh.
|
||
*/
|
||
fbuf = TRUE;
|
||
i = job->curPos;
|
||
}
|
||
}
|
||
if (gotNL || fbuf) {
|
||
/*
|
||
* Need to send the output to the screen. Null terminate it
|
||
* first, overwriting the newline character if there was one.
|
||
* So long as the line isn't one we should filter (according
|
||
* to the shell description), we print the line, preceded
|
||
* by a target banner if this target isn't the same as the
|
||
* one for which we last printed something.
|
||
* The rest of the data in the buffer are then shifted down
|
||
* to the start of the buffer and curPos is set accordingly.
|
||
*/
|
||
job->outBuf[i] = '\0';
|
||
if (i >= job->curPos) {
|
||
char *cp;
|
||
|
||
cp = JobOutput(job, job->outBuf, &job->outBuf[i], FALSE);
|
||
|
||
/*
|
||
* There's still more in that thar buffer. This time, though,
|
||
* we know there's no newline at the end, so we add one of
|
||
* our own free will.
|
||
*/
|
||
if (*cp != '\0') {
|
||
if (!beSilent && job->node != lastNode) {
|
||
MESSAGE(stdout, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
#ifdef USE_META
|
||
if (useMeta) {
|
||
meta_job_output(job, cp, gotNL ? "\n" : "");
|
||
}
|
||
#endif
|
||
(void)fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
|
||
(void)fflush(stdout);
|
||
}
|
||
}
|
||
/*
|
||
* max is the last offset still in the buffer. Move any remaining
|
||
* characters to the start of the buffer and update the end marker
|
||
* curPos.
|
||
*/
|
||
if (i < max) {
|
||
(void)memmove(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
|
||
job->curPos = max - (i + 1);
|
||
} else {
|
||
assert(i == max);
|
||
job->curPos = 0;
|
||
}
|
||
}
|
||
if (finish) {
|
||
/*
|
||
* If the finish flag is true, we must loop until we hit
|
||
* end-of-file on the pipe. This is guaranteed to happen
|
||
* eventually since the other end of the pipe is now closed
|
||
* (we closed it explicitly and the child has exited). When
|
||
* we do get an EOF, finish will be set FALSE and we'll fall
|
||
* through and out.
|
||
*/
|
||
goto end_loop;
|
||
}
|
||
}
|
||
|
||
static void
|
||
JobRun(GNode *targ)
|
||
{
|
||
#ifdef notyet
|
||
/*
|
||
* Unfortunately it is too complicated to run .BEGIN, .END,
|
||
* and .INTERRUPT job in the parallel job module. This has
|
||
* the nice side effect that it avoids a lot of other problems.
|
||
*/
|
||
Lst lst = Lst_Init(FALSE);
|
||
Lst_AtEnd(lst, targ);
|
||
(void)Make_Run(lst);
|
||
Lst_Destroy(lst, NULL);
|
||
JobStart(targ, JOB_SPECIAL);
|
||
while (jobTokensRunning) {
|
||
Job_CatchOutput();
|
||
}
|
||
#else
|
||
Compat_Make(targ, targ);
|
||
if (targ->made == ERROR) {
|
||
PrintOnError(targ, "\n\nStop.");
|
||
exit(1);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_CatchChildren --
|
||
* Handle the exit of a child. Called from Make_Make.
|
||
*
|
||
* Input:
|
||
* block TRUE if should block on the wait
|
||
*
|
||
* Results:
|
||
* none.
|
||
*
|
||
* Side Effects:
|
||
* The job descriptor is removed from the list of children.
|
||
*
|
||
* Notes:
|
||
* We do waits, blocking or not, according to the wisdom of our
|
||
* caller, until there are no more children to report. For each
|
||
* job, call JobFinish to finish things off.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
Job_CatchChildren(void)
|
||
{
|
||
int pid; /* pid of dead child */
|
||
WAIT_T status; /* Exit/termination status */
|
||
|
||
/*
|
||
* Don't even bother if we know there's no one around.
|
||
*/
|
||
if (jobTokensRunning == 0)
|
||
return;
|
||
|
||
while ((pid = waitpid((pid_t) -1, &status, WNOHANG | WUNTRACED)) > 0) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(debug_file, "Process %d exited/stopped status %x.\n", pid,
|
||
WAIT_STATUS(status));
|
||
}
|
||
JobReapChild(pid, status, TRUE);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* It is possible that wait[pid]() was called from elsewhere,
|
||
* this lets us reap jobs regardless.
|
||
*/
|
||
void
|
||
JobReapChild(pid_t pid, WAIT_T status, Boolean isJobs)
|
||
{
|
||
Job *job; /* job descriptor for dead child */
|
||
|
||
/*
|
||
* Don't even bother if we know there's no one around.
|
||
*/
|
||
if (jobTokensRunning == 0)
|
||
return;
|
||
|
||
job = JobFindPid(pid, JOB_ST_RUNNING, isJobs);
|
||
if (job == NULL) {
|
||
if (isJobs) {
|
||
if (!lurking_children)
|
||
Error("Child (%d) status %x not in table?", pid, status);
|
||
}
|
||
return; /* not ours */
|
||
}
|
||
if (WIFSTOPPED(status)) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(debug_file, "Process %d (%s) stopped.\n",
|
||
job->pid, job->node->name);
|
||
}
|
||
if (!make_suspended) {
|
||
switch (WSTOPSIG(status)) {
|
||
case SIGTSTP:
|
||
(void)printf("*** [%s] Suspended\n", job->node->name);
|
||
break;
|
||
case SIGSTOP:
|
||
(void)printf("*** [%s] Stopped\n", job->node->name);
|
||
break;
|
||
default:
|
||
(void)printf("*** [%s] Stopped -- signal %d\n",
|
||
job->node->name, WSTOPSIG(status));
|
||
}
|
||
job->job_suspended = 1;
|
||
}
|
||
(void)fflush(stdout);
|
||
return;
|
||
}
|
||
|
||
job->job_state = JOB_ST_FINISHED;
|
||
job->exit_status = WAIT_STATUS(status);
|
||
|
||
JobFinish(job, status);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_CatchOutput --
|
||
* Catch the output from our children, if we're using
|
||
* pipes do so. Otherwise just block time until we get a
|
||
* signal(most likely a SIGCHLD) since there's no point in
|
||
* just spinning when there's nothing to do and the reaping
|
||
* of a child can wait for a while.
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* Output is read from pipes if we're piping.
|
||
* -----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_CatchOutput(void)
|
||
{
|
||
int nready;
|
||
Job *job;
|
||
int i, pollToken;
|
||
|
||
(void)fflush(stdout);
|
||
|
||
pollToken = 0;
|
||
|
||
/* The first fd in the list is the job token pipe */
|
||
do {
|
||
nready = poll(fds + 1 - pollToken, nfds - 1 + pollToken, POLL_MSEC);
|
||
} while (nready < 0 && errno == EINTR);
|
||
|
||
if (nready < 0)
|
||
Punt("poll: %s", strerror(errno));
|
||
|
||
if (nready > 0 && readyfd(&childExitJob)) {
|
||
char token = 0;
|
||
ssize_t count;
|
||
count = read(childExitJob.inPipe, &token, 1);
|
||
switch (count) {
|
||
case 0:
|
||
Punt("unexpected eof on token pipe");
|
||
case -1:
|
||
Punt("token pipe read: %s", strerror(errno));
|
||
case 1:
|
||
if (token == DO_JOB_RESUME[0])
|
||
/* Complete relay requested from our SIGCONT handler */
|
||
JobRestartJobs();
|
||
break;
|
||
default:
|
||
abort();
|
||
}
|
||
--nready;
|
||
}
|
||
|
||
Job_CatchChildren();
|
||
if (nready == 0)
|
||
return;
|
||
|
||
for (i = 2; i < nfds; i++) {
|
||
if (!fds[i].revents)
|
||
continue;
|
||
job = jobfds[i];
|
||
if (job->job_state == JOB_ST_RUNNING)
|
||
JobDoOutput(job, FALSE);
|
||
if (--nready == 0)
|
||
return;
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_Make --
|
||
* Start the creation of a target. Basically a front-end for
|
||
* JobStart used by the Make module.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* Another job is started.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_Make(GNode *gn)
|
||
{
|
||
(void)JobStart(gn, 0);
|
||
}
|
||
|
||
void
|
||
Shell_Init(void)
|
||
{
|
||
if (shellPath == NULL) {
|
||
/*
|
||
* We are using the default shell, which may be an absolute
|
||
* path if DEFSHELL_CUSTOM is defined.
|
||
*/
|
||
shellName = commandShell->name;
|
||
#ifdef DEFSHELL_CUSTOM
|
||
if (*shellName == '/') {
|
||
shellPath = shellName;
|
||
shellName = strrchr(shellPath, '/');
|
||
shellName++;
|
||
} else
|
||
#endif
|
||
shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
|
||
}
|
||
if (commandShell->exit == NULL) {
|
||
commandShell->exit = "";
|
||
}
|
||
if (commandShell->echo == NULL) {
|
||
commandShell->echo = "";
|
||
}
|
||
if (commandShell->hasErrCtl && *commandShell->exit) {
|
||
if (shellErrFlag &&
|
||
strcmp(commandShell->exit, &shellErrFlag[1]) != 0) {
|
||
free(shellErrFlag);
|
||
shellErrFlag = NULL;
|
||
}
|
||
if (!shellErrFlag) {
|
||
int n = strlen(commandShell->exit) + 2;
|
||
|
||
shellErrFlag = bmake_malloc(n);
|
||
if (shellErrFlag) {
|
||
snprintf(shellErrFlag, n, "-%s", commandShell->exit);
|
||
}
|
||
}
|
||
} else if (shellErrFlag) {
|
||
free(shellErrFlag);
|
||
shellErrFlag = NULL;
|
||
}
|
||
}
|
||
|
||
/*-
|
||
* Returns the string literal that is used in the current command shell
|
||
* to produce a newline character.
|
||
*/
|
||
const char *
|
||
Shell_GetNewline(void)
|
||
{
|
||
|
||
return commandShell->newline;
|
||
}
|
||
|
||
void
|
||
Job_SetPrefix(void)
|
||
{
|
||
|
||
if (targPrefix) {
|
||
free(targPrefix);
|
||
} else if (!Var_Exists(MAKE_JOB_PREFIX, VAR_GLOBAL)) {
|
||
Var_Set(MAKE_JOB_PREFIX, "---", VAR_GLOBAL, 0);
|
||
}
|
||
|
||
targPrefix = Var_Subst(NULL, "${" MAKE_JOB_PREFIX "}",
|
||
VAR_GLOBAL, VARF_WANTRES);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_Init --
|
||
* Initialize the process module
|
||
*
|
||
* Input:
|
||
*
|
||
* Results:
|
||
* none
|
||
*
|
||
* Side Effects:
|
||
* lists and counters are initialized
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_Init(void)
|
||
{
|
||
Job_SetPrefix();
|
||
/* Allocate space for all the job info */
|
||
job_table = bmake_malloc(maxJobs * sizeof *job_table);
|
||
memset(job_table, 0, maxJobs * sizeof *job_table);
|
||
job_table_end = job_table + maxJobs;
|
||
wantToken = 0;
|
||
|
||
aborting = 0;
|
||
errors = 0;
|
||
|
||
lastNode = NULL;
|
||
|
||
Always_pass_job_queue = getBoolean(MAKE_ALWAYS_PASS_JOB_QUEUE,
|
||
Always_pass_job_queue);
|
||
|
||
Job_error_token = getBoolean(MAKE_JOB_ERROR_TOKEN, Job_error_token);
|
||
|
||
|
||
/*
|
||
* There is a non-zero chance that we already have children.
|
||
* eg after 'make -f- <<EOF'
|
||
* Since their termination causes a 'Child (pid) not in table' message,
|
||
* Collect the status of any that are already dead, and suppress the
|
||
* error message if there are any undead ones.
|
||
*/
|
||
for (;;) {
|
||
int rval, status;
|
||
rval = waitpid((pid_t) -1, &status, WNOHANG);
|
||
if (rval > 0)
|
||
continue;
|
||
if (rval == 0)
|
||
lurking_children = 1;
|
||
break;
|
||
}
|
||
|
||
Shell_Init();
|
||
|
||
JobCreatePipe(&childExitJob, 3);
|
||
|
||
/* We can only need to wait for tokens, children and output from each job */
|
||
fds = bmake_malloc(sizeof (*fds) * (2 + maxJobs));
|
||
jobfds = bmake_malloc(sizeof (*jobfds) * (2 + maxJobs));
|
||
|
||
/* These are permanent entries and take slots 0 and 1 */
|
||
watchfd(&tokenWaitJob);
|
||
watchfd(&childExitJob);
|
||
|
||
sigemptyset(&caught_signals);
|
||
/*
|
||
* Install a SIGCHLD handler.
|
||
*/
|
||
(void)bmake_signal(SIGCHLD, JobChildSig);
|
||
sigaddset(&caught_signals, SIGCHLD);
|
||
|
||
#define ADDSIG(s,h) \
|
||
if (bmake_signal(s, SIG_IGN) != SIG_IGN) { \
|
||
sigaddset(&caught_signals, s); \
|
||
(void)bmake_signal(s, h); \
|
||
}
|
||
|
||
/*
|
||
* Catch the four signals that POSIX specifies if they aren't ignored.
|
||
* JobPassSig will take care of calling JobInterrupt if appropriate.
|
||
*/
|
||
ADDSIG(SIGINT, JobPassSig_int)
|
||
ADDSIG(SIGHUP, JobPassSig_term)
|
||
ADDSIG(SIGTERM, JobPassSig_term)
|
||
ADDSIG(SIGQUIT, JobPassSig_term)
|
||
|
||
/*
|
||
* There are additional signals that need to be caught and passed if
|
||
* either the export system wants to be told directly of signals or if
|
||
* we're giving each job its own process group (since then it won't get
|
||
* signals from the terminal driver as we own the terminal)
|
||
*/
|
||
ADDSIG(SIGTSTP, JobPassSig_suspend)
|
||
ADDSIG(SIGTTOU, JobPassSig_suspend)
|
||
ADDSIG(SIGTTIN, JobPassSig_suspend)
|
||
ADDSIG(SIGWINCH, JobCondPassSig)
|
||
ADDSIG(SIGCONT, JobContinueSig)
|
||
#undef ADDSIG
|
||
|
||
(void)Job_RunTarget(".BEGIN", NULL);
|
||
postCommands = Targ_FindNode(".END", TARG_CREATE);
|
||
}
|
||
|
||
static void JobSigReset(void)
|
||
{
|
||
#define DELSIG(s) \
|
||
if (sigismember(&caught_signals, s)) { \
|
||
(void)bmake_signal(s, SIG_DFL); \
|
||
}
|
||
|
||
DELSIG(SIGINT)
|
||
DELSIG(SIGHUP)
|
||
DELSIG(SIGQUIT)
|
||
DELSIG(SIGTERM)
|
||
DELSIG(SIGTSTP)
|
||
DELSIG(SIGTTOU)
|
||
DELSIG(SIGTTIN)
|
||
DELSIG(SIGWINCH)
|
||
DELSIG(SIGCONT)
|
||
#undef DELSIG
|
||
(void)bmake_signal(SIGCHLD, SIG_DFL);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobMatchShell --
|
||
* Find a shell in 'shells' given its name.
|
||
*
|
||
* Results:
|
||
* A pointer to the Shell structure.
|
||
*
|
||
* Side Effects:
|
||
* None.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static Shell *
|
||
JobMatchShell(const char *name)
|
||
{
|
||
Shell *sh;
|
||
|
||
for (sh = shells; sh->name != NULL; sh++) {
|
||
if (strcmp(name, sh->name) == 0)
|
||
return (sh);
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_ParseShell --
|
||
* Parse a shell specification and set up commandShell, shellPath
|
||
* and shellName appropriately.
|
||
*
|
||
* Input:
|
||
* line The shell spec
|
||
*
|
||
* Results:
|
||
* FAILURE if the specification was incorrect.
|
||
*
|
||
* Side Effects:
|
||
* commandShell points to a Shell structure (either predefined or
|
||
* created from the shell spec), shellPath is the full path of the
|
||
* shell described by commandShell, while shellName is just the
|
||
* final component of shellPath.
|
||
*
|
||
* Notes:
|
||
* A shell specification consists of a .SHELL target, with dependency
|
||
* operator, followed by a series of blank-separated words. Double
|
||
* quotes can be used to use blanks in words. A backslash escapes
|
||
* anything (most notably a double-quote and a space) and
|
||
* provides the functionality it does in C. Each word consists of
|
||
* keyword and value separated by an equal sign. There should be no
|
||
* unnecessary spaces in the word. The keywords are as follows:
|
||
* name Name of shell.
|
||
* path Location of shell.
|
||
* quiet Command to turn off echoing.
|
||
* echo Command to turn echoing on
|
||
* filter Result of turning off echoing that shouldn't be
|
||
* printed.
|
||
* echoFlag Flag to turn echoing on at the start
|
||
* errFlag Flag to turn error checking on at the start
|
||
* hasErrCtl True if shell has error checking control
|
||
* newline String literal to represent a newline char
|
||
* check Command to turn on error checking if hasErrCtl
|
||
* is TRUE or template of command to echo a command
|
||
* for which error checking is off if hasErrCtl is
|
||
* FALSE.
|
||
* ignore Command to turn off error checking if hasErrCtl
|
||
* is TRUE or template of command to execute a
|
||
* command so as to ignore any errors it returns if
|
||
* hasErrCtl is FALSE.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
ReturnStatus
|
||
Job_ParseShell(char *line)
|
||
{
|
||
char **words;
|
||
char **argv;
|
||
int argc;
|
||
char *path;
|
||
Shell newShell;
|
||
Boolean fullSpec = FALSE;
|
||
Shell *sh;
|
||
|
||
while (isspace((unsigned char)*line)) {
|
||
line++;
|
||
}
|
||
|
||
free(UNCONST(shellArgv));
|
||
|
||
memset(&newShell, 0, sizeof(newShell));
|
||
|
||
/*
|
||
* Parse the specification by keyword
|
||
*/
|
||
words = brk_string(line, &argc, TRUE, &path);
|
||
if (words == NULL) {
|
||
Error("Unterminated quoted string [%s]", line);
|
||
return FAILURE;
|
||
}
|
||
shellArgv = path;
|
||
|
||
for (path = NULL, argv = words; argc != 0; argc--, argv++) {
|
||
if (strncmp(*argv, "path=", 5) == 0) {
|
||
path = &argv[0][5];
|
||
} else if (strncmp(*argv, "name=", 5) == 0) {
|
||
newShell.name = &argv[0][5];
|
||
} else {
|
||
if (strncmp(*argv, "quiet=", 6) == 0) {
|
||
newShell.echoOff = &argv[0][6];
|
||
} else if (strncmp(*argv, "echo=", 5) == 0) {
|
||
newShell.echoOn = &argv[0][5];
|
||
} else if (strncmp(*argv, "filter=", 7) == 0) {
|
||
newShell.noPrint = &argv[0][7];
|
||
newShell.noPLen = strlen(newShell.noPrint);
|
||
} else if (strncmp(*argv, "echoFlag=", 9) == 0) {
|
||
newShell.echo = &argv[0][9];
|
||
} else if (strncmp(*argv, "errFlag=", 8) == 0) {
|
||
newShell.exit = &argv[0][8];
|
||
} else if (strncmp(*argv, "hasErrCtl=", 10) == 0) {
|
||
char c = argv[0][10];
|
||
newShell.hasErrCtl = !((c != 'Y') && (c != 'y') &&
|
||
(c != 'T') && (c != 't'));
|
||
} else if (strncmp(*argv, "newline=", 8) == 0) {
|
||
newShell.newline = &argv[0][8];
|
||
} else if (strncmp(*argv, "check=", 6) == 0) {
|
||
newShell.errCheck = &argv[0][6];
|
||
} else if (strncmp(*argv, "ignore=", 7) == 0) {
|
||
newShell.ignErr = &argv[0][7];
|
||
} else if (strncmp(*argv, "errout=", 7) == 0) {
|
||
newShell.errOut = &argv[0][7];
|
||
} else if (strncmp(*argv, "comment=", 8) == 0) {
|
||
newShell.commentChar = argv[0][8];
|
||
} else {
|
||
Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
|
||
*argv);
|
||
free(words);
|
||
return(FAILURE);
|
||
}
|
||
fullSpec = TRUE;
|
||
}
|
||
}
|
||
|
||
if (path == NULL) {
|
||
/*
|
||
* If no path was given, the user wants one of the pre-defined shells,
|
||
* yes? So we find the one s/he wants with the help of JobMatchShell
|
||
* and set things up the right way. shellPath will be set up by
|
||
* Shell_Init.
|
||
*/
|
||
if (newShell.name == NULL) {
|
||
Parse_Error(PARSE_FATAL, "Neither path nor name specified");
|
||
free(words);
|
||
return(FAILURE);
|
||
} else {
|
||
if ((sh = JobMatchShell(newShell.name)) == NULL) {
|
||
Parse_Error(PARSE_WARNING, "%s: No matching shell",
|
||
newShell.name);
|
||
free(words);
|
||
return(FAILURE);
|
||
}
|
||
commandShell = sh;
|
||
shellName = newShell.name;
|
||
if (shellPath) {
|
||
/* Shell_Init has already been called! Do it again. */
|
||
free(UNCONST(shellPath));
|
||
shellPath = NULL;
|
||
Shell_Init();
|
||
}
|
||
}
|
||
} else {
|
||
/*
|
||
* The user provided a path. If s/he gave nothing else (fullSpec is
|
||
* FALSE), try and find a matching shell in the ones we know of.
|
||
* Else we just take the specification at its word and copy it
|
||
* to a new location. In either case, we need to record the
|
||
* path the user gave for the shell.
|
||
*/
|
||
shellPath = path;
|
||
path = strrchr(path, '/');
|
||
if (path == NULL) {
|
||
path = UNCONST(shellPath);
|
||
} else {
|
||
path += 1;
|
||
}
|
||
if (newShell.name != NULL) {
|
||
shellName = newShell.name;
|
||
} else {
|
||
shellName = path;
|
||
}
|
||
if (!fullSpec) {
|
||
if ((sh = JobMatchShell(shellName)) == NULL) {
|
||
Parse_Error(PARSE_WARNING, "%s: No matching shell",
|
||
shellName);
|
||
free(words);
|
||
return(FAILURE);
|
||
}
|
||
commandShell = sh;
|
||
} else {
|
||
commandShell = bmake_malloc(sizeof(Shell));
|
||
*commandShell = newShell;
|
||
}
|
||
/* this will take care of shellErrFlag */
|
||
Shell_Init();
|
||
}
|
||
|
||
if (commandShell->echoOn && commandShell->echoOff) {
|
||
commandShell->hasEchoCtl = TRUE;
|
||
}
|
||
|
||
if (!commandShell->hasErrCtl) {
|
||
if (commandShell->errCheck == NULL) {
|
||
commandShell->errCheck = "";
|
||
}
|
||
if (commandShell->ignErr == NULL) {
|
||
commandShell->ignErr = "%s\n";
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Do not free up the words themselves, since they might be in use by the
|
||
* shell specification.
|
||
*/
|
||
free(words);
|
||
return SUCCESS;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobInterrupt --
|
||
* Handle the receipt of an interrupt.
|
||
*
|
||
* Input:
|
||
* runINTERRUPT Non-zero if commands for the .INTERRUPT target
|
||
* should be executed
|
||
* signo signal received
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* All children are killed. Another job will be started if the
|
||
* .INTERRUPT target was given.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobInterrupt(int runINTERRUPT, int signo)
|
||
{
|
||
Job *job; /* job descriptor in that element */
|
||
GNode *interrupt; /* the node describing the .INTERRUPT target */
|
||
sigset_t mask;
|
||
GNode *gn;
|
||
|
||
aborting = ABORT_INTERRUPT;
|
||
|
||
JobSigLock(&mask);
|
||
|
||
for (job = job_table; job < job_table_end; job++) {
|
||
if (job->job_state != JOB_ST_RUNNING)
|
||
continue;
|
||
|
||
gn = job->node;
|
||
|
||
JobDeleteTarget(gn);
|
||
if (job->pid) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(debug_file,
|
||
"JobInterrupt passing signal %d to child %d.\n",
|
||
signo, job->pid);
|
||
}
|
||
KILLPG(job->pid, signo);
|
||
}
|
||
}
|
||
|
||
JobSigUnlock(&mask);
|
||
|
||
if (runINTERRUPT && !touchFlag) {
|
||
interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
|
||
if (interrupt != NULL) {
|
||
ignoreErrors = FALSE;
|
||
JobRun(interrupt);
|
||
}
|
||
}
|
||
Trace_Log(MAKEINTR, 0);
|
||
exit(signo);
|
||
}
|
||
|
||
/*
|
||
*-----------------------------------------------------------------------
|
||
* Job_Finish --
|
||
* Do final processing such as the running of the commands
|
||
* attached to the .END target.
|
||
*
|
||
* Results:
|
||
* Number of errors reported.
|
||
*
|
||
* Side Effects:
|
||
* None.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
int
|
||
Job_Finish(void)
|
||
{
|
||
if (postCommands != NULL &&
|
||
(!Lst_IsEmpty(postCommands->commands) ||
|
||
!Lst_IsEmpty(postCommands->children))) {
|
||
if (errors) {
|
||
Error("Errors reported so .END ignored");
|
||
} else {
|
||
JobRun(postCommands);
|
||
}
|
||
}
|
||
return(errors);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_End --
|
||
* Cleanup any memory used by the jobs module
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* Memory is freed
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_End(void)
|
||
{
|
||
#ifdef CLEANUP
|
||
free(shellArgv);
|
||
#endif
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_Wait --
|
||
* Waits for all running jobs to finish and returns. Sets 'aborting'
|
||
* to ABORT_WAIT to prevent other jobs from starting.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* Currently running jobs finish.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_Wait(void)
|
||
{
|
||
aborting = ABORT_WAIT;
|
||
while (jobTokensRunning != 0) {
|
||
Job_CatchOutput();
|
||
}
|
||
aborting = 0;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_AbortAll --
|
||
* Abort all currently running jobs without handling output or anything.
|
||
* This function is to be called only in the event of a major
|
||
* error. Most definitely NOT to be called from JobInterrupt.
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* All children are killed, not just the firstborn
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_AbortAll(void)
|
||
{
|
||
Job *job; /* the job descriptor in that element */
|
||
WAIT_T foo;
|
||
|
||
aborting = ABORT_ERROR;
|
||
|
||
if (jobTokensRunning) {
|
||
for (job = job_table; job < job_table_end; job++) {
|
||
if (job->job_state != JOB_ST_RUNNING)
|
||
continue;
|
||
/*
|
||
* kill the child process with increasingly drastic signals to make
|
||
* darn sure it's dead.
|
||
*/
|
||
KILLPG(job->pid, SIGINT);
|
||
KILLPG(job->pid, SIGKILL);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Catch as many children as want to report in at first, then give up
|
||
*/
|
||
while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
|
||
continue;
|
||
}
|
||
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobRestartJobs --
|
||
* Tries to restart stopped jobs if there are slots available.
|
||
* Called in process context in response to a SIGCONT.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* Resumes jobs.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobRestartJobs(void)
|
||
{
|
||
Job *job;
|
||
|
||
for (job = job_table; job < job_table_end; job++) {
|
||
if (job->job_state == JOB_ST_RUNNING &&
|
||
(make_suspended || job->job_suspended)) {
|
||
if (DEBUG(JOB)) {
|
||
(void)fprintf(debug_file, "Restarting stopped job pid %d.\n",
|
||
job->pid);
|
||
}
|
||
if (job->job_suspended) {
|
||
(void)printf("*** [%s] Continued\n", job->node->name);
|
||
(void)fflush(stdout);
|
||
}
|
||
job->job_suspended = 0;
|
||
if (KILLPG(job->pid, SIGCONT) != 0 && DEBUG(JOB)) {
|
||
fprintf(debug_file, "Failed to send SIGCONT to %d\n", job->pid);
|
||
}
|
||
}
|
||
if (job->job_state == JOB_ST_FINISHED)
|
||
/* Job exit deferred after calling waitpid() in a signal handler */
|
||
JobFinish(job, job->exit_status);
|
||
}
|
||
make_suspended = 0;
|
||
}
|
||
|
||
static void
|
||
watchfd(Job *job)
|
||
{
|
||
if (job->inPollfd != NULL)
|
||
Punt("Watching watched job");
|
||
|
||
fds[nfds].fd = job->inPipe;
|
||
fds[nfds].events = POLLIN;
|
||
jobfds[nfds] = job;
|
||
job->inPollfd = &fds[nfds];
|
||
nfds++;
|
||
}
|
||
|
||
static void
|
||
clearfd(Job *job)
|
||
{
|
||
int i;
|
||
if (job->inPollfd == NULL)
|
||
Punt("Unwatching unwatched job");
|
||
i = job->inPollfd - fds;
|
||
nfds--;
|
||
/*
|
||
* Move last job in table into hole made by dead job.
|
||
*/
|
||
if (nfds != i) {
|
||
fds[i] = fds[nfds];
|
||
jobfds[i] = jobfds[nfds];
|
||
jobfds[i]->inPollfd = &fds[i];
|
||
}
|
||
job->inPollfd = NULL;
|
||
}
|
||
|
||
static int
|
||
readyfd(Job *job)
|
||
{
|
||
if (job->inPollfd == NULL)
|
||
Punt("Polling unwatched job");
|
||
return (job->inPollfd->revents & POLLIN) != 0;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobTokenAdd --
|
||
* Put a token into the job pipe so that some make process can start
|
||
* another job.
|
||
*
|
||
* Side Effects:
|
||
* Allows more build jobs to be spawned somewhere.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
JobTokenAdd(void)
|
||
{
|
||
char tok = JOB_TOKENS[aborting], tok1;
|
||
|
||
if (!Job_error_token && aborting == ABORT_ERROR) {
|
||
if (jobTokensRunning == 0)
|
||
return;
|
||
tok = '+'; /* no error token */
|
||
}
|
||
|
||
/* If we are depositing an error token flush everything else */
|
||
while (tok != '+' && read(tokenWaitJob.inPipe, &tok1, 1) == 1)
|
||
continue;
|
||
|
||
if (DEBUG(JOB))
|
||
fprintf(debug_file, "(%d) aborting %d, deposit token %c\n",
|
||
getpid(), aborting, tok);
|
||
while (write(tokenWaitJob.outPipe, &tok, 1) == -1 && errno == EAGAIN)
|
||
continue;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_ServerStartTokenAdd --
|
||
* Prep the job token pipe in the root make process.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
Job_ServerStart(int max_tokens, int jp_0, int jp_1)
|
||
{
|
||
int i;
|
||
char jobarg[64];
|
||
|
||
if (jp_0 >= 0 && jp_1 >= 0) {
|
||
/* Pipe passed in from parent */
|
||
tokenWaitJob.inPipe = jp_0;
|
||
tokenWaitJob.outPipe = jp_1;
|
||
(void)fcntl(jp_0, F_SETFD, FD_CLOEXEC);
|
||
(void)fcntl(jp_1, F_SETFD, FD_CLOEXEC);
|
||
return;
|
||
}
|
||
|
||
JobCreatePipe(&tokenWaitJob, 15);
|
||
|
||
snprintf(jobarg, sizeof(jobarg), "%d,%d",
|
||
tokenWaitJob.inPipe, tokenWaitJob.outPipe);
|
||
|
||
Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL);
|
||
Var_Append(MAKEFLAGS, jobarg, VAR_GLOBAL);
|
||
|
||
/*
|
||
* Preload the job pipe with one token per job, save the one
|
||
* "extra" token for the primary job.
|
||
*
|
||
* XXX should clip maxJobs against PIPE_BUF -- if max_tokens is
|
||
* larger than the write buffer size of the pipe, we will
|
||
* deadlock here.
|
||
*/
|
||
for (i = 1; i < max_tokens; i++)
|
||
JobTokenAdd();
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_TokenReturn --
|
||
* Return a withdrawn token to the pool.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
Job_TokenReturn(void)
|
||
{
|
||
jobTokensRunning--;
|
||
if (jobTokensRunning < 0)
|
||
Punt("token botch");
|
||
if (jobTokensRunning || JOB_TOKENS[aborting] != '+')
|
||
JobTokenAdd();
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_TokenWithdraw --
|
||
* Attempt to withdraw a token from the pool.
|
||
*
|
||
* Results:
|
||
* Returns TRUE if a token was withdrawn, and FALSE if the pool
|
||
* is currently empty.
|
||
*
|
||
* Side Effects:
|
||
* If pool is empty, set wantToken so that we wake up
|
||
* when a token is released.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
|
||
|
||
Boolean
|
||
Job_TokenWithdraw(void)
|
||
{
|
||
char tok, tok1;
|
||
int count;
|
||
|
||
wantToken = 0;
|
||
if (DEBUG(JOB))
|
||
fprintf(debug_file, "Job_TokenWithdraw(%d): aborting %d, running %d\n",
|
||
getpid(), aborting, jobTokensRunning);
|
||
|
||
if (aborting || (jobTokensRunning >= maxJobs))
|
||
return FALSE;
|
||
|
||
count = read(tokenWaitJob.inPipe, &tok, 1);
|
||
if (count == 0)
|
||
Fatal("eof on job pipe!");
|
||
if (count < 0 && jobTokensRunning != 0) {
|
||
if (errno != EAGAIN) {
|
||
Fatal("job pipe read: %s", strerror(errno));
|
||
}
|
||
if (DEBUG(JOB))
|
||
fprintf(debug_file, "(%d) blocked for token\n", getpid());
|
||
wantToken = 1;
|
||
return FALSE;
|
||
}
|
||
|
||
if (count == 1 && tok != '+') {
|
||
/* make being abvorted - remove any other job tokens */
|
||
if (DEBUG(JOB))
|
||
fprintf(debug_file, "(%d) aborted by token %c\n", getpid(), tok);
|
||
while (read(tokenWaitJob.inPipe, &tok1, 1) == 1)
|
||
continue;
|
||
/* And put the stopper back */
|
||
while (write(tokenWaitJob.outPipe, &tok, 1) == -1 && errno == EAGAIN)
|
||
continue;
|
||
Fatal("A failure has been detected in another branch of the parallel make");
|
||
}
|
||
|
||
if (count == 1 && jobTokensRunning == 0)
|
||
/* We didn't want the token really */
|
||
while (write(tokenWaitJob.outPipe, &tok, 1) == -1 && errno == EAGAIN)
|
||
continue;
|
||
|
||
jobTokensRunning++;
|
||
if (DEBUG(JOB))
|
||
fprintf(debug_file, "(%d) withdrew token\n", getpid());
|
||
return TRUE;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_RunTarget --
|
||
* Run the named target if found. If a filename is specified, then
|
||
* set that to the sources.
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* exits if the target fails.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
Boolean
|
||
Job_RunTarget(const char *target, const char *fname) {
|
||
GNode *gn = Targ_FindNode(target, TARG_NOCREATE);
|
||
|
||
if (gn == NULL)
|
||
return FALSE;
|
||
|
||
if (fname)
|
||
Var_Set(ALLSRC, fname, gn, 0);
|
||
|
||
JobRun(gn);
|
||
if (gn->made == ERROR) {
|
||
PrintOnError(gn, "\n\nStop.");
|
||
exit(1);
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
#ifdef USE_SELECT
|
||
int
|
||
emul_poll(struct pollfd *fd, int nfd, int timeout)
|
||
{
|
||
fd_set rfds, wfds;
|
||
int i, maxfd, nselect, npoll;
|
||
struct timeval tv, *tvp;
|
||
long usecs;
|
||
|
||
FD_ZERO(&rfds);
|
||
FD_ZERO(&wfds);
|
||
|
||
maxfd = -1;
|
||
for (i = 0; i < nfd; i++) {
|
||
fd[i].revents = 0;
|
||
|
||
if (fd[i].events & POLLIN)
|
||
FD_SET(fd[i].fd, &rfds);
|
||
|
||
if (fd[i].events & POLLOUT)
|
||
FD_SET(fd[i].fd, &wfds);
|
||
|
||
if (fd[i].fd > maxfd)
|
||
maxfd = fd[i].fd;
|
||
}
|
||
|
||
if (maxfd >= FD_SETSIZE) {
|
||
Punt("Ran out of fd_set slots; "
|
||
"recompile with a larger FD_SETSIZE.");
|
||
}
|
||
|
||
if (timeout < 0) {
|
||
tvp = NULL;
|
||
} else {
|
||
usecs = timeout * 1000;
|
||
tv.tv_sec = usecs / 1000000;
|
||
tv.tv_usec = usecs % 1000000;
|
||
tvp = &tv;
|
||
}
|
||
|
||
nselect = select(maxfd + 1, &rfds, &wfds, 0, tvp);
|
||
|
||
if (nselect <= 0)
|
||
return nselect;
|
||
|
||
npoll = 0;
|
||
for (i = 0; i < nfd; i++) {
|
||
if (FD_ISSET(fd[i].fd, &rfds))
|
||
fd[i].revents |= POLLIN;
|
||
|
||
if (FD_ISSET(fd[i].fd, &wfds))
|
||
fd[i].revents |= POLLOUT;
|
||
|
||
if (fd[i].revents)
|
||
npoll++;
|
||
}
|
||
|
||
return npoll;
|
||
}
|
||
#endif /* USE_SELECT */
|