3108 lines
85 KiB
C
3108 lines
85 KiB
C
/*
|
||
* Copyright (c) 1988, 1989, 1990, 1993
|
||
* The Regents of the University of California. All rights reserved.
|
||
* 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.
|
||
*
|
||
* @(#)job.c 8.2 (Berkeley) 3/19/94
|
||
*/
|
||
|
||
#include <sys/cdefs.h>
|
||
__FBSDID("$FreeBSD$");
|
||
|
||
#ifndef OLD_JOKE
|
||
#define OLD_JOKE 0
|
||
#endif /* OLD_JOKE */
|
||
|
||
/*-
|
||
* 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.
|
||
* Its single argument is TRUE if the function
|
||
* should block waiting for a child to terminate.
|
||
*
|
||
* 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 intialize 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_Full Return TRUE if the job table is filled.
|
||
*
|
||
* Job_Empty Return TRUE if the job table is completely
|
||
* empty.
|
||
*
|
||
* 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.
|
||
*/
|
||
|
||
#include <sys/types.h>
|
||
#include <sys/stat.h>
|
||
#include <sys/file.h>
|
||
#include <sys/time.h>
|
||
#include <sys/wait.h>
|
||
#include <err.h>
|
||
#include <errno.h>
|
||
#include <fcntl.h>
|
||
#include <stdio.h>
|
||
#include <string.h>
|
||
#include <signal.h>
|
||
#include <unistd.h>
|
||
#include <utime.h>
|
||
#include "make.h"
|
||
#include "hash.h"
|
||
#include "dir.h"
|
||
#include "job.h"
|
||
#include "pathnames.h"
|
||
#ifdef REMOTE
|
||
#include "rmt.h"
|
||
# define STATIC
|
||
#else
|
||
# define STATIC static
|
||
#endif
|
||
|
||
/*
|
||
* 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 */
|
||
|
||
/*
|
||
* 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; /* 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 */
|
||
#define JOB_STOPPED 3 /* The job is stopped */
|
||
|
||
/*
|
||
* tfile is used to build temp file names to store shell commands to
|
||
* execute.
|
||
*/
|
||
static char tfile[sizeof(TMPPAT)];
|
||
|
||
|
||
/*
|
||
* Descriptions for various shells.
|
||
*/
|
||
static Shell shells[] = {
|
||
/*
|
||
* 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\"",
|
||
"v", "e",
|
||
},
|
||
/*
|
||
* SH description. Echo control is also possible and, under
|
||
* sun UNIX anyway, one can even control error checking.
|
||
*/
|
||
{
|
||
"sh",
|
||
TRUE, "set -", "set -v", "set -", 5,
|
||
TRUE, "set -e", "set +e",
|
||
#ifdef OLDBOURNESHELL
|
||
FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
|
||
#endif
|
||
"v", "e",
|
||
},
|
||
/*
|
||
* KSH description. The Korn shell has a superset of
|
||
* the Bourne shell's functionality.
|
||
*/
|
||
{
|
||
"ksh",
|
||
TRUE, "set -", "set -v", "set -", 5,
|
||
TRUE, "set -e", "set +e",
|
||
"v", "e",
|
||
},
|
||
/*
|
||
* UNKNOWN.
|
||
*/
|
||
{
|
||
(char *) 0,
|
||
FALSE, (char *) 0, (char *) 0, (char *) 0, 0,
|
||
FALSE, (char *) 0, (char *) 0,
|
||
(char *) 0, (char *) 0,
|
||
}
|
||
};
|
||
static Shell *commandShell = &shells[DEFSHELL];/* this is the shell to
|
||
* which we pass all
|
||
* commands in the Makefile.
|
||
* It is set by the
|
||
* Job_ParseShell function */
|
||
static char *shellPath = NULL, /* full pathname of
|
||
* executable image */
|
||
*shellName; /* last component of shell */
|
||
|
||
|
||
static int maxJobs; /* The most children we can run at once */
|
||
static int maxLocal; /* The most local ones we can have */
|
||
STATIC int nJobs; /* The number of children currently running */
|
||
STATIC int nLocal; /* The number of local children */
|
||
STATIC Lst jobs; /* The structures that describe them */
|
||
STATIC Boolean jobFull; /* Flag to tell when the job table is full. It
|
||
* is set TRUE when (1) the total number of
|
||
* running jobs equals the maximum allowed or
|
||
* (2) a job can only be run locally, but
|
||
* nLocal equals maxLocal */
|
||
#ifndef RMT_WILL_WATCH
|
||
static fd_set outputs; /* Set of descriptors of pipes connected to
|
||
* the output channels of children */
|
||
#endif
|
||
|
||
STATIC GNode *lastNode; /* The node for which output was most recently
|
||
* produced. */
|
||
STATIC char *targFmt; /* Format string to use to head output from a
|
||
* job when it's not the most-recent job heard
|
||
* from */
|
||
|
||
#ifdef REMOTE
|
||
# define TARG_FMT "--- %s at %s ---\n" /* Default format */
|
||
# define MESSAGE(fp, gn) \
|
||
(void) fprintf(fp, targFmt, gn->name, gn->rem.hname);
|
||
#else
|
||
# define TARG_FMT "--- %s ---\n" /* Default format */
|
||
# define MESSAGE(fp, gn) \
|
||
(void) fprintf(fp, targFmt, gn->name);
|
||
#endif
|
||
|
||
/*
|
||
* When JobStart attempts to run a job remotely but can't, and isn't allowed
|
||
* to run the job locally, or when Job_CatchChildren detects a job that has
|
||
* been migrated home, the job is placed on the stoppedJobs queue to be run
|
||
* when the next job finishes.
|
||
*/
|
||
STATIC Lst stoppedJobs; /* Lst of Job structures describing
|
||
* jobs that were stopped due to concurrency
|
||
* limits or migration home */
|
||
|
||
|
||
#if defined(USE_PGRP) && defined(SYSV)
|
||
# define KILL(pid, sig) killpg(-(pid), (sig))
|
||
#else
|
||
# if defined(USE_PGRP)
|
||
# define KILL(pid, sig) killpg((pid), (sig))
|
||
# else
|
||
# define KILL(pid, sig) kill((pid), (sig))
|
||
# endif
|
||
#endif
|
||
|
||
/*
|
||
* Grmpf... There is no way to set bits of the wait structure
|
||
* anymore with the stupid W*() macros. I liked the union wait
|
||
* stuff much more. So, we devise our own macros... This is
|
||
* really ugly, use dramamine sparingly. You have been warned.
|
||
*/
|
||
#define W_SETMASKED(st, val, fun) \
|
||
{ \
|
||
int sh = (int) ~0; \
|
||
int mask = fun(sh); \
|
||
\
|
||
for (sh = 0; ((mask >> sh) & 1) == 0; sh++) \
|
||
continue; \
|
||
*(st) = (*(st) & ~mask) | ((val) << sh); \
|
||
}
|
||
|
||
#define W_SETTERMSIG(st, val) W_SETMASKED(st, val, WTERMSIG)
|
||
#define W_SETEXITSTATUS(st, val) W_SETMASKED(st, val, WEXITSTATUS)
|
||
|
||
|
||
static int JobCondPassSig(void *, void *);
|
||
static void JobPassSig(int);
|
||
static int JobCmpPid(void *, void *);
|
||
static int JobPrintCommand(void *, void *);
|
||
static int JobSaveCommand(void *, void *);
|
||
static void JobClose(Job *);
|
||
#ifdef REMOTE
|
||
static int JobCmpRmtID(Job *, int);
|
||
# ifdef RMT_WILL_WATCH
|
||
static void JobLocalInput(int, Job *);
|
||
# endif
|
||
#else
|
||
static void JobFinish(Job *, int *);
|
||
static void JobExec(Job *, char **);
|
||
#endif
|
||
static void JobMakeArgv(Job *, char **);
|
||
static void JobRestart(Job *);
|
||
static int JobStart(GNode *, int, Job *);
|
||
static char *JobOutput(Job *, char *, char *, int);
|
||
static void JobDoOutput(Job *, Boolean);
|
||
static Shell *JobMatchShell(char *);
|
||
static void JobInterrupt(int, int);
|
||
static void JobRestartJobs(void);
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobCondPassSig --
|
||
* Pass a signal to a job if the job is remote or if USE_PGRP
|
||
* is defined.
|
||
*
|
||
* Results:
|
||
* === 0
|
||
*
|
||
* Side Effects:
|
||
* None, except the job may bite it.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobCondPassSig(jobp, signop)
|
||
void * jobp; /* Job to biff */
|
||
void * signop; /* Signal to send it */
|
||
{
|
||
Job *job = (Job *) jobp;
|
||
int signo = *(int *) signop;
|
||
#ifdef RMT_WANTS_SIGNALS
|
||
if (job->flags & JOB_REMOTE) {
|
||
(void) Rmt_Signal(job, signo);
|
||
} else {
|
||
KILL(job->pid, signo);
|
||
}
|
||
#else
|
||
/*
|
||
* Assume that sending the signal to job->pid will signal any remote
|
||
* job as well.
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout,
|
||
"JobCondPassSig passing signal %d to child %d.\n",
|
||
signo, job->pid);
|
||
(void) fflush(stdout);
|
||
}
|
||
KILL(job->pid, signo);
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobPassSig --
|
||
* Pass a signal on to all remote jobs and to all local jobs if
|
||
* USE_PGRP is defined, then die ourselves.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* We die by the same signal.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobPassSig(signo)
|
||
int signo; /* The signal number we've received */
|
||
{
|
||
sigset_t nmask, omask;
|
||
struct sigaction act;
|
||
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "JobPassSig(%d) called.\n", signo);
|
||
(void) fflush(stdout);
|
||
}
|
||
Lst_ForEach(jobs, JobCondPassSig, (void *) &signo);
|
||
|
||
/*
|
||
* Deal with proper cleanup based on the signal received. We only run
|
||
* the .INTERRUPT target if the signal was in fact an interrupt. The other
|
||
* three termination signals are more of a "get out *now*" command.
|
||
*/
|
||
if (signo == SIGINT) {
|
||
JobInterrupt(TRUE, signo);
|
||
} else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) {
|
||
JobInterrupt(FALSE, signo);
|
||
}
|
||
|
||
/*
|
||
* Leave gracefully if SIGQUIT, rather than core dumping.
|
||
*/
|
||
if (signo == SIGQUIT) {
|
||
signo = SIGINT;
|
||
}
|
||
|
||
/*
|
||
* 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.
|
||
*/
|
||
sigemptyset(&nmask);
|
||
sigaddset(&nmask, signo);
|
||
sigprocmask(SIG_SETMASK, &nmask, &omask);
|
||
act.sa_handler = SIG_DFL;
|
||
sigemptyset(&act.sa_mask);
|
||
act.sa_flags = 0;
|
||
sigaction(signo, &act, NULL);
|
||
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout,
|
||
"JobPassSig passing signal to self, mask = %x.\n",
|
||
~0 & ~(1 << (signo-1)));
|
||
(void) fflush(stdout);
|
||
}
|
||
(void) signal(signo, SIG_DFL);
|
||
|
||
(void) KILL(getpid(), signo);
|
||
|
||
signo = SIGCONT;
|
||
Lst_ForEach(jobs, JobCondPassSig, (void *) &signo);
|
||
|
||
(void) sigprocmask(SIG_SETMASK, &omask, NULL);
|
||
sigprocmask(SIG_SETMASK, &omask, NULL);
|
||
act.sa_handler = JobPassSig;
|
||
sigaction(signo, &act, NULL);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobCmpPid --
|
||
* Compare the pid of the job with the given pid and return 0 if they
|
||
* are equal. This function is called from Job_CatchChildren via
|
||
* Lst_Find to find the job descriptor of the finished job.
|
||
*
|
||
* Results:
|
||
* 0 if the pid's match
|
||
*
|
||
* Side Effects:
|
||
* None
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobCmpPid(job, pid)
|
||
void * job; /* job to examine */
|
||
void * pid; /* process id desired */
|
||
{
|
||
return *(int *) pid - ((Job *) job)->pid;
|
||
}
|
||
|
||
#ifdef REMOTE
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobCmpRmtID --
|
||
* Compare the rmtID of the job with the given rmtID and return 0 if they
|
||
* are equal.
|
||
*
|
||
* Results:
|
||
* 0 if the rmtID's match
|
||
*
|
||
* Side Effects:
|
||
* None.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobCmpRmtID(job, rmtID)
|
||
void * job; /* job to examine */
|
||
void * rmtID; /* remote id desired */
|
||
{
|
||
return(*(int *) rmtID - *(int *) job->rmtID);
|
||
}
|
||
#endif
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* 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_Finish when all things are done.
|
||
* This function is called from JobStart via Lst_ForEach.
|
||
*
|
||
* 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(cmdp, jobp)
|
||
void * cmdp; /* command string to print */
|
||
void * jobp; /* job for which to print it */
|
||
{
|
||
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 */
|
||
char *cmdTemplate; /* Template to use when printing the
|
||
* command */
|
||
char *cmdStart; /* Start of expanded command */
|
||
LstNode cmdNode; /* Node for replacing the command */
|
||
char *cmd = (char *) cmdp;
|
||
Job *job = (Job *) jobp;
|
||
|
||
noSpecials = (noExecute && !(job->node->type & OP_MAKE));
|
||
|
||
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,
|
||
(void *)cmd));
|
||
return 1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
#define DBPRINTF(fmt, arg) if (DEBUG(JOB)) { \
|
||
(void) fprintf(stdout, fmt, arg); \
|
||
(void) fflush(stdout); \
|
||
} \
|
||
(void) fprintf(job->cmdFILE, fmt, arg); \
|
||
(void) fflush(job->cmdFILE);
|
||
|
||
numCommands += 1;
|
||
|
||
/*
|
||
* For debugging, we replace each command with the result of expanding
|
||
* the variables in the command.
|
||
*/
|
||
cmdNode = Lst_Member(job->node->commands, (void *)cmd);
|
||
cmdStart = cmd = Var_Subst(NULL, cmd, job->node, FALSE);
|
||
Lst_Replace(cmdNode, (void *)cmdStart);
|
||
|
||
cmdTemplate = "%s\n";
|
||
|
||
/*
|
||
* Check for leading @' and -'s to control echoing and error checking.
|
||
*/
|
||
while (*cmd == '@' || *cmd == '-') {
|
||
if (*cmd == '@') {
|
||
shutUp = DEBUG(LOUD) ? FALSE : TRUE;
|
||
} else {
|
||
errOff = TRUE;
|
||
}
|
||
cmd++;
|
||
}
|
||
|
||
while (isspace((unsigned char) *cmd))
|
||
cmd++;
|
||
|
||
if (shutUp) {
|
||
if (!(job->flags & JOB_SILENT) && !noSpecials &&
|
||
commandShell->hasEchoCtl) {
|
||
DBPRINTF("%s\n", commandShell->echoOff);
|
||
} else {
|
||
shutUp = FALSE;
|
||
}
|
||
}
|
||
|
||
if (errOff) {
|
||
if ( !(job->flags & JOB_IGNERR) && !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.
|
||
*/
|
||
if (!(job->flags & JOB_SILENT) && !shutUp &&
|
||
commandShell->hasEchoCtl) {
|
||
DBPRINTF("%s\n", commandShell->echoOff);
|
||
DBPRINTF(commandShell->errCheck, cmd);
|
||
shutUp = TRUE;
|
||
}
|
||
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;
|
||
}
|
||
}
|
||
|
||
DBPRINTF(cmdTemplate, cmd);
|
||
|
||
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) {
|
||
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(cmd, gn)
|
||
void * cmd;
|
||
void * gn;
|
||
{
|
||
cmd = (void *) Var_Subst(NULL, (char *) cmd, (GNode *) gn, FALSE);
|
||
(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 *job;
|
||
{
|
||
if (usePipes) {
|
||
#ifdef RMT_WILL_WATCH
|
||
Rmt_Ignore(job->inPipe);
|
||
#else
|
||
FD_CLR(job->inPipe, &outputs);
|
||
#endif
|
||
if (job->outPipe != job->inPipe) {
|
||
(void) close(job->outPipe);
|
||
}
|
||
JobDoOutput(job, TRUE);
|
||
(void) close(job->inPipe);
|
||
} else {
|
||
(void) close(job->outFd);
|
||
JobDoOutput(job, TRUE);
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* 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.
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* Some nodes may be put on the toBeMade queue.
|
||
* 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, status)
|
||
Job *job; /* job to finish */
|
||
int *status; /* sub-why job went away */
|
||
{
|
||
Boolean done;
|
||
|
||
if ((WIFEXITED(*status) &&
|
||
(((WEXITSTATUS(*status) != 0) && !(job->flags & JOB_IGNERR)))) ||
|
||
(WIFSIGNALED(*status) && (WTERMSIG(*status) != SIGCONT)))
|
||
{
|
||
/*
|
||
* 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...
|
||
*/
|
||
#ifdef REMOTE
|
||
KILL(job->pid, SIGCONT);
|
||
#endif
|
||
JobClose(job);
|
||
if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
|
||
(void) fclose(job->cmdFILE);
|
||
}
|
||
done = TRUE;
|
||
#ifdef REMOTE
|
||
if (job->flags & JOB_REMOTE)
|
||
Rmt_Done(job->rmtID, job->node);
|
||
#endif
|
||
} 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);
|
||
#ifdef REMOTE
|
||
if (job->flags & JOB_REMOTE)
|
||
Rmt_Done(job->rmtID, job->node);
|
||
#endif /* REMOTE */
|
||
} else {
|
||
/*
|
||
* No need to close things down or anything.
|
||
*/
|
||
done = FALSE;
|
||
}
|
||
|
||
if (done ||
|
||
WIFSTOPPED(*status) ||
|
||
(WIFSIGNALED(*status) && (WTERMSIG(*status) == SIGCONT)) ||
|
||
DEBUG(JOB))
|
||
{
|
||
FILE *out;
|
||
|
||
if (compatMake && !usePipes && (job->flags & JOB_IGNERR)) {
|
||
/*
|
||
* If output is going to a file and this job is ignoring
|
||
* errors, arrange to have the exit status sent to the
|
||
* output file as well.
|
||
*/
|
||
out = fdopen(job->outFd, "w");
|
||
if (out == NULL)
|
||
Punt("Cannot fdopen");
|
||
} else {
|
||
out = stdout;
|
||
}
|
||
|
||
if (WIFEXITED(*status)) {
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "Process %d exited.\n", job->pid);
|
||
(void) fflush(stdout);
|
||
}
|
||
if (WEXITSTATUS(*status) != 0) {
|
||
if (usePipes && job->node != lastNode) {
|
||
MESSAGE(out, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
(void) fprintf(out, "*** Error code %d%s\n",
|
||
WEXITSTATUS(*status),
|
||
(job->flags & JOB_IGNERR) ? "(ignored)" : "");
|
||
|
||
if (job->flags & JOB_IGNERR) {
|
||
*status = 0;
|
||
}
|
||
} else if (DEBUG(JOB)) {
|
||
if (usePipes && job->node != lastNode) {
|
||
MESSAGE(out, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
(void) fprintf(out, "*** Completed successfully\n");
|
||
}
|
||
} else if (WIFSTOPPED(*status)) {
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "Process %d stopped.\n", job->pid);
|
||
(void) fflush(stdout);
|
||
}
|
||
if (usePipes && job->node != lastNode) {
|
||
MESSAGE(out, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
if (!(job->flags & JOB_REMIGRATE)) {
|
||
(void) fprintf(out, "*** Stopped -- signal %d\n",
|
||
WSTOPSIG(*status));
|
||
}
|
||
job->flags |= JOB_RESUME;
|
||
(void)Lst_AtEnd(stoppedJobs, (void *)job);
|
||
#ifdef REMOTE
|
||
if (job->flags & JOB_REMIGRATE)
|
||
JobRestart(job);
|
||
#endif
|
||
(void) fflush(out);
|
||
return;
|
||
} else if (WTERMSIG(*status) == SIGCONT) {
|
||
/*
|
||
* If the beastie has continued, shift the Job from the stopped
|
||
* list to the running one (or re-stop it if concurrency is
|
||
* exceeded) and go and get another child.
|
||
*/
|
||
if (job->flags & (JOB_RESUME|JOB_REMIGRATE|JOB_RESTART)) {
|
||
if (usePipes && job->node != lastNode) {
|
||
MESSAGE(out, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
(void) fprintf(out, "*** Continued\n");
|
||
}
|
||
if (!(job->flags & JOB_CONTINUING)) {
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout,
|
||
"Warning: process %d was not continuing.\n",
|
||
job->pid);
|
||
(void) fflush(stdout);
|
||
}
|
||
#ifdef notdef
|
||
/*
|
||
* We don't really want to restart a job from scratch just
|
||
* because it continued, especially not without killing the
|
||
* continuing process! That's why this is ifdef'ed out.
|
||
* FD - 9/17/90
|
||
*/
|
||
JobRestart(job);
|
||
#endif
|
||
}
|
||
job->flags &= ~JOB_CONTINUING;
|
||
Lst_AtEnd(jobs, (void *)job);
|
||
nJobs += 1;
|
||
if (!(job->flags & JOB_REMOTE)) {
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout,
|
||
"Process %d is continuing locally.\n",
|
||
job->pid);
|
||
(void) fflush(stdout);
|
||
}
|
||
nLocal += 1;
|
||
}
|
||
if (nJobs == maxJobs) {
|
||
jobFull = TRUE;
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "Job queue is full.\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
}
|
||
(void) fflush(out);
|
||
return;
|
||
} else {
|
||
if (usePipes && job->node != lastNode) {
|
||
MESSAGE(out, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
(void) fprintf(out, "*** Signal %d\n", WTERMSIG(*status));
|
||
}
|
||
|
||
(void) fflush(out);
|
||
}
|
||
|
||
/*
|
||
* Now handle the -B-mode stuff. If the beast still isn't finished,
|
||
* try and restart the job on the next command. If JobStart says it's
|
||
* ok, it's ok. If there's an error, this puppy is done.
|
||
*/
|
||
if (compatMake && (WIFEXITED(*status) &&
|
||
!Lst_IsAtEnd(job->node->commands))) {
|
||
switch (JobStart(job->node, job->flags & JOB_IGNDOTS, job)) {
|
||
case JOB_RUNNING:
|
||
done = FALSE;
|
||
break;
|
||
case JOB_ERROR:
|
||
done = TRUE;
|
||
W_SETEXITSTATUS(status, 1);
|
||
break;
|
||
case JOB_FINISHED:
|
||
/*
|
||
* If we got back a JOB_FINISHED code, JobStart has already
|
||
* called Make_Update and freed the job descriptor. We set
|
||
* done to false here to avoid fake cycles and double frees.
|
||
* JobStart needs to do the update so we can proceed up the
|
||
* graph when given the -n flag..
|
||
*/
|
||
done = FALSE;
|
||
break;
|
||
}
|
||
} else {
|
||
done = TRUE;
|
||
}
|
||
|
||
|
||
if (done &&
|
||
(aborting != ABORT_ERROR) &&
|
||
(aborting != ABORT_INTERRUPT) &&
|
||
(*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,
|
||
(void *)job->node);
|
||
}
|
||
job->node->made = MADE;
|
||
Make_Update(job->node);
|
||
free(job);
|
||
} else if (*status != 0) {
|
||
errors += 1;
|
||
free(job);
|
||
}
|
||
|
||
JobRestartJobs();
|
||
|
||
/*
|
||
* 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 ((aborting == ABORT_ERROR) && Job_Empty())
|
||
/*
|
||
* 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
|
||
*
|
||
* 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(gn, silent)
|
||
GNode *gn; /* the node of the file to touch */
|
||
Boolean silent; /* TRUE if should not print messages */
|
||
{
|
||
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_EXEC|OP_OPTIONAL)) {
|
||
/*
|
||
* .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual" targets
|
||
* and, as such, shouldn't really be created.
|
||
*/
|
||
return;
|
||
}
|
||
|
||
if (!silent) {
|
||
(void) fprintf(stdout, "touch %s\n", gn->name);
|
||
(void) fflush(stdout);
|
||
}
|
||
|
||
if (noExecute) {
|
||
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);
|
||
(void) write(streamID, &c, 1);
|
||
}
|
||
|
||
(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.
|
||
*
|
||
* 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(gn, abortProc)
|
||
GNode *gn; /* The target whose commands need
|
||
* verifying */
|
||
void (*abortProc)(const char *, ...);
|
||
/* Function to abort with message */
|
||
{
|
||
if (OP_NOP(gn->type) && Lst_IsEmpty(gn->commands) &&
|
||
(gn->type & OP_LIB) == 0) {
|
||
/*
|
||
* No commands. Look for .DEFAULT rule from which we might infer
|
||
* commands
|
||
*/
|
||
if ((DEFAULT != NULL) && !Lst_IsEmpty(DEFAULT->commands)) {
|
||
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);
|
||
efree(p1);
|
||
} else if (Dir_MTime(gn) == 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[] = "make: don't know how to make";
|
||
|
||
if (gn->type & OP_OPTIONAL) {
|
||
(void) fprintf(stdout, "%s %s(ignored)\n", msg, gn->name);
|
||
(void) fflush(stdout);
|
||
} else if (keepgoing) {
|
||
(void) fprintf(stdout, "%s %s(continuing)\n", msg, gn->name);
|
||
(void) fflush(stdout);
|
||
return FALSE;
|
||
} else {
|
||
#if OLD_JOKE
|
||
if (strcmp(gn->name,"love") == 0)
|
||
(*abortProc)("Not war.");
|
||
else
|
||
#endif
|
||
(*abortProc)("%s %s. Stop", msg, gn->name);
|
||
return FALSE;
|
||
}
|
||
}
|
||
}
|
||
return TRUE;
|
||
}
|
||
#ifdef RMT_WILL_WATCH
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobLocalInput --
|
||
* Handle a pipe becoming readable. Callback function for Rmt_Watch
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* JobDoOutput is called.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
/*ARGSUSED*/
|
||
static void
|
||
JobLocalInput(stream, job)
|
||
int stream; /* Stream that's ready (ignored) */
|
||
Job *job; /* Job to which the stream belongs */
|
||
{
|
||
JobDoOutput(job, FALSE);
|
||
}
|
||
#endif /* RMT_WILL_WATCH */
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobExec --
|
||
* Execute the shell for the given job. Called from JobStart and
|
||
* JobRestart.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* A shell is executed, outputs is altered and the Job structure added
|
||
* to the job table.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobExec(job, argv)
|
||
Job *job; /* Job to execute */
|
||
char **argv;
|
||
{
|
||
int cpid; /* ID of new child */
|
||
|
||
if (DEBUG(JOB)) {
|
||
int i;
|
||
|
||
(void) fprintf(stdout, "Running %s %sly\n", job->node->name,
|
||
job->flags&JOB_REMOTE?"remote":"local");
|
||
(void) fprintf(stdout, "\tCommand: ");
|
||
for (i = 0; argv[i] != NULL; i++) {
|
||
(void) fprintf(stdout, "%s ", argv[i]);
|
||
}
|
||
(void) fprintf(stdout, "\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
|
||
/*
|
||
* 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_FIRST) &&
|
||
!(job->flags & JOB_SILENT)) {
|
||
MESSAGE(stdout, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
|
||
#ifdef RMT_NO_EXEC
|
||
if (job->flags & JOB_REMOTE) {
|
||
goto jobExecFinish;
|
||
}
|
||
#endif /* RMT_NO_EXEC */
|
||
|
||
if ((cpid = vfork()) == -1) {
|
||
Punt("Cannot fork");
|
||
} else if (cpid == 0) {
|
||
|
||
/*
|
||
* 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)
|
||
Punt("Cannot dup2: %s", strerror(errno));
|
||
(void) fcntl(0, F_SETFD, 0);
|
||
(void) lseek(0, (off_t)0, SEEK_SET);
|
||
|
||
if (usePipes) {
|
||
/*
|
||
* Set up the child's output to be routed through the pipe
|
||
* we've created for it.
|
||
*/
|
||
if (dup2(job->outPipe, 1) == -1)
|
||
Punt("Cannot dup2: %s", strerror(errno));
|
||
} else {
|
||
/*
|
||
* We're capturing output in a file, so we duplicate the
|
||
* descriptor to the temporary file into the standard
|
||
* output.
|
||
*/
|
||
if (dup2(job->outFd, 1) == -1)
|
||
Punt("Cannot dup2: %s", strerror(errno));
|
||
}
|
||
/*
|
||
* 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.
|
||
*/
|
||
(void) fcntl(1, F_SETFD, 0);
|
||
if (dup2(1, 2) == -1)
|
||
Punt("Cannot dup2: %s", strerror(errno));
|
||
|
||
#ifdef USE_PGRP
|
||
/*
|
||
* 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(SYSV)
|
||
(void) setsid();
|
||
# else
|
||
(void) setpgid(0, getpid());
|
||
# endif
|
||
#endif /* USE_PGRP */
|
||
|
||
#ifdef REMOTE
|
||
if (job->flags & JOB_REMOTE) {
|
||
Rmt_Exec(shellPath, argv, FALSE);
|
||
} else
|
||
#endif /* REMOTE */
|
||
(void) execv(shellPath, argv);
|
||
|
||
(void) write(STDERR_FILENO, "Could not execute shell\n",
|
||
sizeof("Could not execute shell"));
|
||
_exit(1);
|
||
} else {
|
||
#ifdef REMOTE
|
||
long omask = sigblock(sigmask(SIGCHLD));
|
||
#endif
|
||
job->pid = cpid;
|
||
|
||
if (usePipes && (job->flags & JOB_FIRST) ) {
|
||
/*
|
||
* The first time a job is run for a node, we set the current
|
||
* position in the buffer to the beginning and mark another
|
||
* stream to watch in the outputs mask
|
||
*/
|
||
job->curPos = 0;
|
||
|
||
#ifdef RMT_WILL_WATCH
|
||
Rmt_Watch(job->inPipe, JobLocalInput, job);
|
||
#else
|
||
FD_SET(job->inPipe, &outputs);
|
||
#endif /* RMT_WILL_WATCH */
|
||
}
|
||
|
||
if (job->flags & JOB_REMOTE) {
|
||
#ifndef REMOTE
|
||
job->rmtID = 0;
|
||
#else
|
||
job->rmtID = Rmt_LastID(job->pid);
|
||
#endif /* REMOTE */
|
||
} else {
|
||
nLocal += 1;
|
||
/*
|
||
* XXX: Used to not happen if REMOTE. Why?
|
||
*/
|
||
if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
|
||
(void) fclose(job->cmdFILE);
|
||
job->cmdFILE = NULL;
|
||
}
|
||
}
|
||
#ifdef REMOTE
|
||
(void) sigsetmask(omask);
|
||
#endif
|
||
}
|
||
|
||
#ifdef RMT_NO_EXEC
|
||
jobExecFinish:
|
||
#endif
|
||
/*
|
||
* Now the job is actually running, add it to the table.
|
||
*/
|
||
nJobs += 1;
|
||
(void) Lst_AtEnd(jobs, (void *)job);
|
||
if (nJobs == maxJobs) {
|
||
jobFull = TRUE;
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobMakeArgv --
|
||
* Create the argv needed to execute the shell for a given job.
|
||
*
|
||
*
|
||
* Results:
|
||
*
|
||
* Side Effects:
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobMakeArgv(job, argv)
|
||
Job *job;
|
||
char **argv;
|
||
{
|
||
int argc;
|
||
static char args[10]; /* For merged arguments */
|
||
|
||
argv[0] = 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)sprintf(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] = commandShell->exit;
|
||
argc++;
|
||
}
|
||
if (!(job->flags & JOB_SILENT) && commandShell->echo) {
|
||
argv[argc] = commandShell->echo;
|
||
argc++;
|
||
}
|
||
}
|
||
argv[argc] = NULL;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobRestart --
|
||
* Restart a job that stopped for some reason.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* jobFull will be set if the job couldn't be run.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobRestart(job)
|
||
Job *job; /* Job to restart */
|
||
{
|
||
#ifdef REMOTE
|
||
int host;
|
||
#endif
|
||
|
||
if (job->flags & JOB_REMIGRATE) {
|
||
if (
|
||
#ifdef REMOTE
|
||
verboseRemigrates ||
|
||
#endif
|
||
DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "*** remigrating %x(%s)\n",
|
||
job->pid, job->node->name);
|
||
(void) fflush(stdout);
|
||
}
|
||
|
||
#ifdef REMOTE
|
||
if (!Rmt_ReExport(job->pid, job->node, &host)) {
|
||
if (verboseRemigrates || DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "*** couldn't migrate...\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
#endif
|
||
if (nLocal != maxLocal) {
|
||
/*
|
||
* Job cannot be remigrated, but there's room on the local
|
||
* machine, so resume the job and note that another
|
||
* local job has started.
|
||
*/
|
||
if (
|
||
#ifdef REMOTE
|
||
verboseRemigrates ||
|
||
#endif
|
||
DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "*** resuming on local machine\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
KILL(job->pid, SIGCONT);
|
||
nLocal +=1;
|
||
#ifdef REMOTE
|
||
job->flags &= ~(JOB_REMIGRATE|JOB_RESUME|JOB_REMOTE);
|
||
job->flags |= JOB_CONTINUING;
|
||
#else
|
||
job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
|
||
#endif
|
||
} else {
|
||
/*
|
||
* Job cannot be restarted. Mark the table as full and
|
||
* place the job back on the list of stopped jobs.
|
||
*/
|
||
if (
|
||
#ifdef REMOTE
|
||
verboseRemigrates ||
|
||
#endif
|
||
DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "*** holding\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
(void)Lst_AtFront(stoppedJobs, (void *)job);
|
||
jobFull = TRUE;
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "Job queue is full.\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
return;
|
||
}
|
||
#ifdef REMOTE
|
||
} else {
|
||
/*
|
||
* Clear out the remigrate and resume flags. Set the continuing
|
||
* flag so we know later on that the process isn't exiting just
|
||
* because of a signal.
|
||
*/
|
||
job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
|
||
job->flags |= JOB_CONTINUING;
|
||
job->rmtID = host;
|
||
}
|
||
#endif
|
||
|
||
(void)Lst_AtEnd(jobs, (void *)job);
|
||
nJobs += 1;
|
||
if (nJobs == maxJobs) {
|
||
jobFull = TRUE;
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "Job queue is full.\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
}
|
||
} else if (job->flags & JOB_RESTART) {
|
||
/*
|
||
* Set up the control arguments to the shell. This is based on the
|
||
* flags set earlier for this job. If the JOB_IGNERR flag is clear,
|
||
* the 'exit' flag of the commandShell is used to cause it to exit
|
||
* upon receiving an error. If the JOB_SILENT flag is clear, the
|
||
* 'echo' flag of the commandShell is used to get it to start echoing
|
||
* as soon as it starts processing commands.
|
||
*/
|
||
char *argv[4];
|
||
|
||
JobMakeArgv(job, argv);
|
||
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "Restarting %s...", job->node->name);
|
||
(void) fflush(stdout);
|
||
}
|
||
#ifdef REMOTE
|
||
if ((job->node->type&OP_NOEXPORT) ||
|
||
(nLocal < maxLocal && runLocalFirst)
|
||
# ifdef RMT_NO_EXEC
|
||
|| !Rmt_Export(shellPath, argv, job)
|
||
# else
|
||
|| !Rmt_Begin(shellPath, argv, job->node)
|
||
# endif
|
||
#endif
|
||
{
|
||
if (((nLocal >= maxLocal) && !(job->flags & JOB_SPECIAL))) {
|
||
/*
|
||
* Can't be exported and not allowed to run locally -- put it
|
||
* back on the hold queue and mark the table full
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "holding\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
(void)Lst_AtFront(stoppedJobs, (void *)job);
|
||
jobFull = TRUE;
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "Job queue is full.\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
return;
|
||
} else {
|
||
/*
|
||
* Job may be run locally.
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "running locally\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
job->flags &= ~JOB_REMOTE;
|
||
}
|
||
}
|
||
#ifdef REMOTE
|
||
else {
|
||
/*
|
||
* Can be exported. Hooray!
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "exporting\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
job->flags |= JOB_REMOTE;
|
||
}
|
||
#endif
|
||
JobExec(job, argv);
|
||
} else {
|
||
/*
|
||
* The job has stopped and needs to be restarted. Why it stopped,
|
||
* we don't know...
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "Resuming %s...", job->node->name);
|
||
(void) fflush(stdout);
|
||
}
|
||
if (((job->flags & JOB_REMOTE) ||
|
||
(nLocal < maxLocal) ||
|
||
#ifdef REMOTE
|
||
(((job->flags & JOB_SPECIAL) &&
|
||
(job->node->type & OP_NOEXPORT)) &&
|
||
(maxLocal == 0))) &&
|
||
#else
|
||
((job->flags & JOB_SPECIAL) &&
|
||
(maxLocal == 0))) &&
|
||
#endif
|
||
(nJobs != maxJobs))
|
||
{
|
||
/*
|
||
* If the job is remote, it's ok to resume it as long as the
|
||
* maximum concurrency won't be exceeded. If it's local and
|
||
* we haven't reached the local concurrency limit already (or the
|
||
* job must be run locally and maxLocal is 0), it's also ok to
|
||
* resume it.
|
||
*/
|
||
Boolean error;
|
||
int status;
|
||
|
||
#ifdef RMT_WANTS_SIGNALS
|
||
if (job->flags & JOB_REMOTE) {
|
||
error = !Rmt_Signal(job, SIGCONT);
|
||
} else
|
||
#endif /* RMT_WANTS_SIGNALS */
|
||
error = (KILL(job->pid, SIGCONT) != 0);
|
||
|
||
if (!error) {
|
||
/*
|
||
* Make sure the user knows we've continued the beast and
|
||
* actually put the thing in the job table.
|
||
*/
|
||
job->flags |= JOB_CONTINUING;
|
||
W_SETTERMSIG(&status, SIGCONT);
|
||
JobFinish(job, &status);
|
||
|
||
job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "done\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
} else {
|
||
Error("couldn't resume %s: %s",
|
||
job->node->name, strerror(errno));
|
||
status = 0;
|
||
W_SETEXITSTATUS(&status, 1);
|
||
JobFinish(job, &status);
|
||
}
|
||
} else {
|
||
/*
|
||
* Job cannot be restarted. Mark the table as full and
|
||
* place the job back on the list of stopped jobs.
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "table full\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
(void) Lst_AtFront(stoppedJobs, (void *)job);
|
||
jobFull = TRUE;
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "Job queue is full.\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobStart --
|
||
* Start a target-creation process going for the target described
|
||
* by the graph node gn.
|
||
*
|
||
* 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.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
JobStart(gn, flags, previous)
|
||
GNode *gn; /* target to create */
|
||
int flags; /* flags for the job to override normal ones.
|
||
* e.g. JOB_SPECIAL or JOB_IGNDOTS */
|
||
Job *previous; /* The previous Job structure for this node,
|
||
* if any. */
|
||
{
|
||
Job *job; /* new job descriptor */
|
||
char *argv[4]; /* Argument vector to shell */
|
||
Boolean cmdsOK; /* true if the nodes commands were all right */
|
||
Boolean local; /* Set true if the job was run locally */
|
||
Boolean noExec; /* Set true if we decide not to run the job */
|
||
int tfd; /* File descriptor for temp file */
|
||
|
||
if (previous != NULL) {
|
||
previous->flags &= ~(JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
|
||
job = previous;
|
||
} else {
|
||
job = (Job *) emalloc(sizeof(Job));
|
||
flags |= JOB_FIRST;
|
||
}
|
||
|
||
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
|
||
*/
|
||
if (!compatMake && job->flags & JOB_FIRST) {
|
||
cmdsOK = Job_CheckCommands(gn, Error);
|
||
} else {
|
||
cmdsOK = TRUE;
|
||
}
|
||
|
||
/*
|
||
* 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) || (!noExecute && !touchFlag)) {
|
||
/*
|
||
* We're serious here, but if the commands were bogus, we're
|
||
* also dead...
|
||
*/
|
||
if (!cmdsOK) {
|
||
DieHorribly();
|
||
}
|
||
|
||
(void) strcpy(tfile, TMPPAT);
|
||
if ((tfd = mkstemp(tfile)) == -1)
|
||
Punt("Cannot create temp file: %s", strerror(errno));
|
||
job->cmdFILE = fdopen(tfd, "w+");
|
||
eunlink(tfile);
|
||
if (job->cmdFILE == NULL) {
|
||
close(tfd);
|
||
Punt("Could not open %s", tfile);
|
||
}
|
||
(void) fcntl(FILENO(job->cmdFILE), F_SETFD, 1);
|
||
/*
|
||
* Send the commands to the command file, flush all its buffers then
|
||
* rewind and remove the thing.
|
||
*/
|
||
noExec = FALSE;
|
||
|
||
/*
|
||
* used to be backwards; replace when start doing multiple commands
|
||
* per shell.
|
||
*/
|
||
if (compatMake) {
|
||
/*
|
||
* Be compatible: If this is the first time for this node,
|
||
* verify its commands are ok and open the commands list for
|
||
* sequential access by later invocations of JobStart.
|
||
* Once that is done, we take the next command off the list
|
||
* and print it to the command file. If the command was an
|
||
* ellipsis, note that there's nothing more to execute.
|
||
*/
|
||
if ((job->flags&JOB_FIRST) && (Lst_Open(gn->commands) != SUCCESS)){
|
||
cmdsOK = FALSE;
|
||
} else {
|
||
LstNode ln = Lst_Next(gn->commands);
|
||
|
||
if ((ln == NULL) ||
|
||
JobPrintCommand((void *) Lst_Datum(ln),
|
||
(void *) job))
|
||
{
|
||
noExec = TRUE;
|
||
Lst_Close(gn->commands);
|
||
}
|
||
if (noExec && !(job->flags & JOB_FIRST)) {
|
||
/*
|
||
* If we're not going to execute anything, the job
|
||
* is done and we need to close down the various
|
||
* file descriptors we've opened for output, then
|
||
* call JobDoOutput to catch the final characters or
|
||
* send the file to the screen... Note that the i/o streams
|
||
* are only open if this isn't the first job.
|
||
* Note also that this could not be done in
|
||
* Job_CatchChildren b/c it wasn't clear if there were
|
||
* more commands to execute or not...
|
||
*/
|
||
JobClose(job);
|
||
}
|
||
}
|
||
} else {
|
||
/*
|
||
* We can do all the commands at once. hooray for sanity
|
||
*/
|
||
numCommands = 0;
|
||
Lst_ForEach(gn->commands, JobPrintCommand, (void *)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;
|
||
}
|
||
}
|
||
} else if (noExecute) {
|
||
/*
|
||
* 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, (void *)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;
|
||
}
|
||
|
||
/*
|
||
* If we're not supposed to execute a shell, don't.
|
||
*/
|
||
if (noExec) {
|
||
/*
|
||
* Unlink and close the command file if we opened one
|
||
*/
|
||
if (job->cmdFILE != stdout) {
|
||
if (job->cmdFILE != NULL)
|
||
(void) fclose(job->cmdFILE);
|
||
} else {
|
||
(void) fflush(stdout);
|
||
}
|
||
|
||
/*
|
||
* 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) {
|
||
if (aborting == 0) {
|
||
if (job->tailCmds != NULL) {
|
||
Lst_ForEachFrom(job->node->commands, job->tailCmds,
|
||
JobSaveCommand,
|
||
(void *)job->node);
|
||
}
|
||
job->node->made = MADE;
|
||
Make_Update(job->node);
|
||
}
|
||
free(job);
|
||
return(JOB_FINISHED);
|
||
} else {
|
||
free(job);
|
||
return(JOB_ERROR);
|
||
}
|
||
} else {
|
||
(void) fflush(job->cmdFILE);
|
||
}
|
||
|
||
/*
|
||
* Set up the control arguments to the shell. This is based on the flags
|
||
* set earlier for this job.
|
||
*/
|
||
JobMakeArgv(job, argv);
|
||
|
||
/*
|
||
* If we're using pipes to catch output, create the pipe by which we'll
|
||
* get the shell's output. If we're using files, print out that we're
|
||
* starting a job and then set up its temporary-file name.
|
||
*/
|
||
if (!compatMake || (job->flags & JOB_FIRST)) {
|
||
if (usePipes) {
|
||
int fd[2];
|
||
if (pipe(fd) == -1)
|
||
Punt("Cannot create pipe: %s", strerror(errno));
|
||
job->inPipe = fd[0];
|
||
job->outPipe = fd[1];
|
||
(void) fcntl(job->inPipe, F_SETFD, 1);
|
||
(void) fcntl(job->outPipe, F_SETFD, 1);
|
||
} else {
|
||
(void) fprintf(stdout, "Remaking `%s'\n", gn->name);
|
||
(void) fflush(stdout);
|
||
(void) strcpy(job->outFile, TMPPAT);
|
||
if ((job->outFd = mkstemp(job->outFile)) == -1)
|
||
Punt("cannot create temp file: %s", strerror(errno));
|
||
(void) fcntl(job->outFd, F_SETFD, 1);
|
||
}
|
||
}
|
||
|
||
#ifdef REMOTE
|
||
if (!(gn->type & OP_NOEXPORT) && !(runLocalFirst && nLocal < maxLocal)) {
|
||
#ifdef RMT_NO_EXEC
|
||
local = !Rmt_Export(shellPath, argv, job);
|
||
#else
|
||
local = !Rmt_Begin(shellPath, argv, job->node);
|
||
#endif /* RMT_NO_EXEC */
|
||
if (!local) {
|
||
job->flags |= JOB_REMOTE;
|
||
}
|
||
} else
|
||
#endif
|
||
local = TRUE;
|
||
|
||
if (local && (((nLocal >= maxLocal) &&
|
||
!(job->flags & JOB_SPECIAL) &&
|
||
#ifdef REMOTE
|
||
(!(gn->type & OP_NOEXPORT) || (maxLocal != 0))
|
||
#else
|
||
(maxLocal != 0)
|
||
#endif
|
||
)))
|
||
{
|
||
/*
|
||
* The job can only be run locally, but we've hit the limit of
|
||
* local concurrency, so put the job on hold until some other job
|
||
* finishes. Note that the special jobs (.BEGIN, .INTERRUPT and .END)
|
||
* may be run locally even when the local limit has been reached
|
||
* (e.g. when maxLocal == 0), though they will be exported if at
|
||
* all possible. In addition, any target marked with .NOEXPORT will
|
||
* be run locally if maxLocal is 0.
|
||
*/
|
||
jobFull = TRUE;
|
||
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "Can only run job locally.\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
job->flags |= JOB_RESTART;
|
||
(void) Lst_AtEnd(stoppedJobs, (void *)job);
|
||
} else {
|
||
if ((nLocal >= maxLocal) && local) {
|
||
/*
|
||
* If we're running this job locally as a special case (see above),
|
||
* at least say the table is full.
|
||
*/
|
||
jobFull = TRUE;
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "Local job queue is full.\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
}
|
||
JobExec(job, argv);
|
||
}
|
||
return(JOB_RUNNING);
|
||
}
|
||
|
||
static char *
|
||
JobOutput(job, cp, endp, msg)
|
||
Job *job;
|
||
char *cp, *endp;
|
||
int msg;
|
||
{
|
||
char *ecp;
|
||
|
||
if (commandShell->noPrint) {
|
||
ecp = Str_FindSubstring(cp, commandShell->noPrint);
|
||
while (ecp != NULL) {
|
||
if (cp != ecp) {
|
||
*ecp = '\0';
|
||
if (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.
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* curPos may be shifted as may the contents of outBuf.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
STATIC void
|
||
JobDoOutput(job, finish)
|
||
Job *job; /* the job whose output needs printing */
|
||
Boolean finish; /* TRUE if this is the last time we'll be
|
||
* called for this job */
|
||
{
|
||
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 */
|
||
|
||
FILE *oFILE; /* Stream pointer to shell's output file */
|
||
char inLine[132];
|
||
|
||
|
||
if (usePipes) {
|
||
/*
|
||
* 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 (DEBUG(JOB)) {
|
||
warn("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 (job->node != lastNode) {
|
||
MESSAGE(stdout, job->node);
|
||
lastNode = job->node;
|
||
}
|
||
(void) fprintf(stdout, "%s%s", cp, gotNL ? "\n" : "");
|
||
(void) fflush(stdout);
|
||
}
|
||
}
|
||
if (i < max - 1) {
|
||
/* shift the remaining characters down */
|
||
(void) memcpy(job->outBuf, &job->outBuf[i + 1], max - (i + 1));
|
||
job->curPos = max - (i + 1);
|
||
|
||
} else {
|
||
/*
|
||
* We have written everything out, so we just start over
|
||
* from the start of the buffer. No copying. No nothing.
|
||
*/
|
||
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;
|
||
}
|
||
} else {
|
||
/*
|
||
* We've been called to retrieve the output of the job from the
|
||
* temporary file where it's been squirreled away. This consists of
|
||
* opening the file, reading the output line by line, being sure not
|
||
* to print the noPrint line for the shell we used, then close and
|
||
* remove the temporary file. Very simple.
|
||
*
|
||
* Change to read in blocks and do FindSubString type things as for
|
||
* pipes? That would allow for "@echo -n..."
|
||
*/
|
||
oFILE = fopen(job->outFile, "r");
|
||
if (oFILE != NULL) {
|
||
(void) fprintf(stdout, "Results of making %s:\n", job->node->name);
|
||
(void) fflush(stdout);
|
||
while (fgets(inLine, sizeof(inLine), oFILE) != NULL) {
|
||
char *cp, *endp, *oendp;
|
||
|
||
cp = inLine;
|
||
oendp = endp = inLine + strlen(inLine);
|
||
if (endp[-1] == '\n') {
|
||
*--endp = '\0';
|
||
}
|
||
cp = JobOutput(job, inLine, endp, 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.
|
||
*/
|
||
(void) fprintf(stdout, "%s", cp);
|
||
(void) fflush(stdout);
|
||
if (endp != oendp) {
|
||
(void) fprintf(stdout, "\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
}
|
||
(void) fclose(oFILE);
|
||
(void) eunlink(job->outFile);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_CatchChildren --
|
||
* Handle the exit of a child. Called from Make_Make.
|
||
*
|
||
* 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. This will take care of
|
||
* putting jobs on the stoppedJobs queue.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_CatchChildren(block)
|
||
Boolean block; /* TRUE if should block on the wait. */
|
||
{
|
||
int pid; /* pid of dead child */
|
||
Job *job; /* job descriptor for dead child */
|
||
LstNode jnode; /* list element for finding job */
|
||
int status; /* Exit/termination status */
|
||
|
||
/*
|
||
* Don't even bother if we know there's no one around.
|
||
*/
|
||
if (nLocal == 0) {
|
||
return;
|
||
}
|
||
|
||
while ((pid = waitpid((pid_t) -1, &status,
|
||
(block?0:WNOHANG)|WUNTRACED)) > 0)
|
||
{
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "Process %d exited or stopped.\n", pid);
|
||
(void) fflush(stdout);
|
||
}
|
||
|
||
|
||
jnode = Lst_Find(jobs, (void *)&pid, JobCmpPid);
|
||
|
||
if (jnode == NULL) {
|
||
if (WIFSIGNALED(status) && (WTERMSIG(status) == SIGCONT)) {
|
||
jnode = Lst_Find(stoppedJobs, (void *) &pid, JobCmpPid);
|
||
if (jnode == NULL) {
|
||
Error("Resumed child (%d) not in table", pid);
|
||
continue;
|
||
}
|
||
job = (Job *)Lst_Datum(jnode);
|
||
(void) Lst_Remove(stoppedJobs, jnode);
|
||
} else {
|
||
Error("Child (%d) not in table?", pid);
|
||
continue;
|
||
}
|
||
} else {
|
||
job = (Job *) Lst_Datum(jnode);
|
||
(void) Lst_Remove(jobs, jnode);
|
||
nJobs -= 1;
|
||
if (jobFull && DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "Job queue is no longer full.\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
jobFull = FALSE;
|
||
#ifdef REMOTE
|
||
if (!(job->flags & JOB_REMOTE)) {
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout,
|
||
"Job queue has one fewer local process.\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
nLocal -= 1;
|
||
}
|
||
#else
|
||
nLocal -= 1;
|
||
#endif
|
||
}
|
||
|
||
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()
|
||
{
|
||
int nfds;
|
||
struct timeval timeout;
|
||
fd_set readfds;
|
||
LstNode ln;
|
||
Job *job;
|
||
#ifdef RMT_WILL_WATCH
|
||
int pnJobs; /* Previous nJobs */
|
||
#endif
|
||
|
||
(void) fflush(stdout);
|
||
#ifdef RMT_WILL_WATCH
|
||
pnJobs = nJobs;
|
||
|
||
/*
|
||
* It is possible for us to be called with nJobs equal to 0. This happens
|
||
* if all the jobs finish and a job that is stopped cannot be run
|
||
* locally (eg if maxLocal is 0) and cannot be exported. The job will
|
||
* be placed back on the stoppedJobs queue, Job_Empty() will return false,
|
||
* Make_Run will call us again when there's nothing for which to wait.
|
||
* nJobs never changes, so we loop forever. Hence the check. It could
|
||
* be argued that we should sleep for a bit so as not to swamp the
|
||
* exportation system with requests. Perhaps we should.
|
||
*
|
||
* NOTE: IT IS THE RESPONSIBILITY OF Rmt_Wait TO CALL Job_CatchChildren
|
||
* IN A TIMELY FASHION TO CATCH ANY LOCALLY RUNNING JOBS THAT EXIT.
|
||
* It may use the variable nLocal to determine if it needs to call
|
||
* Job_CatchChildren (if nLocal is 0, there's nothing for which to
|
||
* wait...)
|
||
*/
|
||
while (nJobs != 0 && pnJobs == nJobs) {
|
||
Rmt_Wait();
|
||
}
|
||
#else
|
||
if (usePipes) {
|
||
readfds = outputs;
|
||
timeout.tv_sec = SEL_SEC;
|
||
timeout.tv_usec = SEL_USEC;
|
||
|
||
if ((nfds = select(FD_SETSIZE, &readfds, (fd_set *) 0,
|
||
(fd_set *) 0, &timeout)) <= 0)
|
||
return;
|
||
else {
|
||
if (Lst_Open(jobs) == FAILURE) {
|
||
Punt("Cannot open job table");
|
||
}
|
||
while (nfds && (ln = Lst_Next(jobs)) != NULL) {
|
||
job = (Job *) Lst_Datum(ln);
|
||
if (FD_ISSET(job->inPipe, &readfds)) {
|
||
JobDoOutput(job, FALSE);
|
||
nfds -= 1;
|
||
}
|
||
}
|
||
Lst_Close(jobs);
|
||
}
|
||
}
|
||
#endif /* RMT_WILL_WATCH */
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* 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(gn)
|
||
GNode *gn;
|
||
{
|
||
(void) JobStart(gn, 0, NULL);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_Init --
|
||
* Initialize the process module
|
||
*
|
||
* Results:
|
||
* none
|
||
*
|
||
* Side Effects:
|
||
* lists and counters are initialized
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Job_Init(maxproc, maxlocal)
|
||
int maxproc; /* the greatest number of jobs which may be
|
||
* running at one time */
|
||
int maxlocal; /* the greatest number of local jobs which may
|
||
* be running at once. */
|
||
{
|
||
GNode *begin; /* node for commands to do at the very start */
|
||
|
||
jobs = Lst_Init(FALSE);
|
||
stoppedJobs = Lst_Init(FALSE);
|
||
maxJobs = maxproc;
|
||
maxLocal = maxlocal;
|
||
nJobs = 0;
|
||
nLocal = 0;
|
||
jobFull = FALSE;
|
||
|
||
aborting = 0;
|
||
errors = 0;
|
||
|
||
lastNode = NULL;
|
||
|
||
if (maxJobs == 1 || beVerbose == 0
|
||
#ifdef REMOTE
|
||
|| noMessages
|
||
#endif
|
||
) {
|
||
/*
|
||
* If only one job can run at a time, there's no need for a banner,
|
||
* no is there?
|
||
*/
|
||
targFmt = "";
|
||
} else {
|
||
targFmt = TARG_FMT;
|
||
}
|
||
|
||
if (shellPath == NULL) {
|
||
/*
|
||
* The user didn't specify a shell to use, so we are using the
|
||
* default one... Both the absolute path and the last component
|
||
* must be set. The last component is taken from the 'name' field
|
||
* of the default shell description pointed-to by commandShell.
|
||
* All default shells are located in _PATH_DEFSHELLDIR.
|
||
*/
|
||
shellName = commandShell->name;
|
||
shellPath = str_concat(_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
|
||
}
|
||
|
||
if (commandShell->exit == NULL) {
|
||
commandShell->exit = "";
|
||
}
|
||
if (commandShell->echo == NULL) {
|
||
commandShell->echo = "";
|
||
}
|
||
|
||
/*
|
||
* Catch the four signals that POSIX specifies if they aren't ignored.
|
||
* JobPassSig will take care of calling JobInterrupt if appropriate.
|
||
*/
|
||
if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
|
||
(void) signal(SIGINT, JobPassSig);
|
||
}
|
||
if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
|
||
(void) signal(SIGHUP, JobPassSig);
|
||
}
|
||
if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
|
||
(void) signal(SIGQUIT, JobPassSig);
|
||
}
|
||
if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
|
||
(void) signal(SIGTERM, JobPassSig);
|
||
}
|
||
/*
|
||
* 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)
|
||
*/
|
||
#if defined(RMT_WANTS_SIGNALS) || defined(USE_PGRP)
|
||
if (signal(SIGTSTP, SIG_IGN) != SIG_IGN) {
|
||
(void) signal(SIGTSTP, JobPassSig);
|
||
}
|
||
if (signal(SIGTTOU, SIG_IGN) != SIG_IGN) {
|
||
(void) signal(SIGTTOU, JobPassSig);
|
||
}
|
||
if (signal(SIGTTIN, SIG_IGN) != SIG_IGN) {
|
||
(void) signal(SIGTTIN, JobPassSig);
|
||
}
|
||
if (signal(SIGWINCH, SIG_IGN) != SIG_IGN) {
|
||
(void) signal(SIGWINCH, JobPassSig);
|
||
}
|
||
#endif
|
||
|
||
begin = Targ_FindNode(".BEGIN", TARG_NOCREATE);
|
||
|
||
if (begin != NULL) {
|
||
JobStart(begin, JOB_SPECIAL, (Job *)0);
|
||
while (nJobs) {
|
||
Job_CatchOutput();
|
||
#ifndef RMT_WILL_WATCH
|
||
Job_CatchChildren(!usePipes);
|
||
#endif /* RMT_WILL_WATCH */
|
||
}
|
||
}
|
||
postCommands = Targ_FindNode(".END", TARG_CREATE);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_Full --
|
||
* See if the job table is full. It is considered full if it is OR
|
||
* if we are in the process of aborting OR if we have
|
||
* reached/exceeded our local quota. This prevents any more jobs
|
||
* from starting up.
|
||
*
|
||
* Results:
|
||
* TRUE if the job table is full, FALSE otherwise
|
||
* Side Effects:
|
||
* None.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
Boolean
|
||
Job_Full()
|
||
{
|
||
return(aborting || jobFull);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_Empty --
|
||
* See if the job table is empty. Because the local concurrency may
|
||
* be set to 0, it is possible for the job table to become empty,
|
||
* while the list of stoppedJobs remains non-empty. In such a case,
|
||
* we want to restart as many jobs as we can.
|
||
*
|
||
* Results:
|
||
* TRUE if it is. FALSE if it ain't.
|
||
*
|
||
* Side Effects:
|
||
* None.
|
||
*
|
||
* -----------------------------------------------------------------------
|
||
*/
|
||
Boolean
|
||
Job_Empty()
|
||
{
|
||
if (nJobs == 0) {
|
||
if (!Lst_IsEmpty(stoppedJobs) && !aborting) {
|
||
/*
|
||
* The job table is obviously not full if it has no jobs in
|
||
* it...Try and restart the stopped jobs.
|
||
*/
|
||
jobFull = FALSE;
|
||
JobRestartJobs();
|
||
return(FALSE);
|
||
} else {
|
||
return(TRUE);
|
||
}
|
||
} else {
|
||
return(FALSE);
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobMatchShell --
|
||
* Find a matching shell in 'shells' given its final component.
|
||
*
|
||
* Results:
|
||
* A pointer to the Shell structure.
|
||
*
|
||
* Side Effects:
|
||
* None.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static Shell *
|
||
JobMatchShell(name)
|
||
char *name; /* Final component of shell path */
|
||
{
|
||
Shell *sh; /* Pointer into shells table */
|
||
Shell *match; /* Longest-matching shell */
|
||
char *cp1,
|
||
*cp2;
|
||
char *eoname;
|
||
|
||
eoname = name + strlen(name);
|
||
|
||
match = NULL;
|
||
|
||
for (sh = shells; sh->name != NULL; sh++) {
|
||
for (cp1 = eoname - strlen(sh->name), cp2 = sh->name;
|
||
*cp1 != '\0' && *cp1 == *cp2;
|
||
cp1++, cp2++) {
|
||
continue;
|
||
}
|
||
if (*cp1 != *cp2) {
|
||
continue;
|
||
} else if (match == NULL || strlen(match->name) < strlen(sh->name)) {
|
||
match = sh;
|
||
}
|
||
}
|
||
return(match == NULL ? sh : match);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Job_ParseShell --
|
||
* Parse a shell specification and set up commandShell, shellPath
|
||
* and shellName appropriately.
|
||
*
|
||
* 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. Overrides "name" if given
|
||
* 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
|
||
* 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(line)
|
||
char *line; /* The shell spec */
|
||
{
|
||
char **words;
|
||
int wordCount;
|
||
char **argv;
|
||
int argc;
|
||
char *path;
|
||
Shell newShell;
|
||
Boolean fullSpec = FALSE;
|
||
|
||
while (isspace((unsigned char) *line)) {
|
||
line++;
|
||
}
|
||
words = brk_string(line, &wordCount, TRUE);
|
||
|
||
memset(&newShell, 0, sizeof(newShell));
|
||
|
||
/*
|
||
* Parse the specification by keyword
|
||
*/
|
||
for (path = NULL, argc = wordCount - 1, argv = words + 1;
|
||
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, "check=", 6) == 0) {
|
||
newShell.errCheck = &argv[0][6];
|
||
} else if (strncmp(*argv, "ignore=", 7) == 0) {
|
||
newShell.ignErr = &argv[0][7];
|
||
} else {
|
||
Parse_Error(PARSE_FATAL, "Unknown keyword \"%s\"",
|
||
*argv);
|
||
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
|
||
* Job_Init.
|
||
*/
|
||
if (newShell.name == NULL) {
|
||
Parse_Error(PARSE_FATAL, "Neither path nor name specified");
|
||
return(FAILURE);
|
||
} else {
|
||
commandShell = JobMatchShell(newShell.name);
|
||
shellName = newShell.name;
|
||
}
|
||
} 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 = shellPath;
|
||
} else {
|
||
path += 1;
|
||
}
|
||
if (newShell.name != NULL) {
|
||
shellName = newShell.name;
|
||
} else {
|
||
shellName = path;
|
||
}
|
||
if (!fullSpec) {
|
||
commandShell = JobMatchShell(shellName);
|
||
} else {
|
||
commandShell = (Shell *) emalloc(sizeof(Shell));
|
||
*commandShell = newShell;
|
||
}
|
||
}
|
||
|
||
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";
|
||
}
|
||
}
|
||
|
||
return SUCCESS;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobInterrupt --
|
||
* Handle the receipt of an interrupt.
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* All children are killed. Another job will be started if the
|
||
* .INTERRUPT target was given.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobInterrupt(runINTERRUPT, signo)
|
||
int runINTERRUPT; /* Non-zero if commands for the .INTERRUPT
|
||
* target should be executed */
|
||
int signo; /* signal received */
|
||
{
|
||
LstNode ln; /* element in job table */
|
||
Job *job = NULL; /* job descriptor in that element */
|
||
GNode *interrupt; /* the node describing the .INTERRUPT target */
|
||
|
||
aborting = ABORT_INTERRUPT;
|
||
|
||
(void) Lst_Open(jobs);
|
||
while ((ln = Lst_Next(jobs)) != NULL) {
|
||
job = (Job *) Lst_Datum(ln);
|
||
|
||
if (!Targ_Precious(job->node)) {
|
||
char *file = (job->node->path == NULL ?
|
||
job->node->name :
|
||
job->node->path);
|
||
if (!noExecute && eunlink(file) != -1) {
|
||
Error("*** %s removed", file);
|
||
}
|
||
}
|
||
#ifdef RMT_WANTS_SIGNALS
|
||
if (job->flags & JOB_REMOTE) {
|
||
/*
|
||
* If job is remote, let the Rmt module do the killing.
|
||
*/
|
||
if (!Rmt_Signal(job, signo)) {
|
||
/*
|
||
* If couldn't kill the thing, finish it out now with an
|
||
* error code, since no exit report will come in likely.
|
||
*/
|
||
int status;
|
||
|
||
status.w_status = 0;
|
||
status.w_retcode = 1;
|
||
JobFinish(job, &status);
|
||
}
|
||
} else if (job->pid) {
|
||
KILL(job->pid, signo);
|
||
}
|
||
#else
|
||
if (job->pid) {
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout,
|
||
"JobInterrupt passing signal to child %d.\n",
|
||
job->pid);
|
||
(void) fflush(stdout);
|
||
}
|
||
KILL(job->pid, signo);
|
||
}
|
||
#endif /* RMT_WANTS_SIGNALS */
|
||
}
|
||
|
||
#ifdef REMOTE
|
||
(void)Lst_Open(stoppedJobs);
|
||
while ((ln = Lst_Next(stoppedJobs)) != NULL) {
|
||
job = (Job *) Lst_Datum(ln);
|
||
|
||
if (job->flags & JOB_RESTART) {
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "%s%s",
|
||
"JobInterrupt skipping job on stopped queue",
|
||
"-- it was waiting to be restarted.\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
continue;
|
||
}
|
||
if (!Targ_Precious(job->node)) {
|
||
char *file = (job->node->path == NULL ?
|
||
job->node->name :
|
||
job->node->path);
|
||
if (eunlink(file) == 0) {
|
||
Error("*** %s removed", file);
|
||
}
|
||
}
|
||
/*
|
||
* Resume the thing so it will take the signal.
|
||
*/
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout,
|
||
"JobInterrupt passing CONT to stopped child %d.\n",
|
||
job->pid);
|
||
(void) fflush(stdout);
|
||
}
|
||
KILL(job->pid, SIGCONT);
|
||
#ifdef RMT_WANTS_SIGNALS
|
||
if (job->flags & JOB_REMOTE) {
|
||
/*
|
||
* If job is remote, let the Rmt module do the killing.
|
||
*/
|
||
if (!Rmt_Signal(job, SIGINT)) {
|
||
/*
|
||
* If couldn't kill the thing, finish it out now with an
|
||
* error code, since no exit report will come in likely.
|
||
*/
|
||
int status;
|
||
status.w_status = 0;
|
||
status.w_retcode = 1;
|
||
JobFinish(job, &status);
|
||
}
|
||
} else if (job->pid) {
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout,
|
||
"JobInterrupt passing interrupt to stopped child %d.\n",
|
||
job->pid);
|
||
(void) fflush(stdout);
|
||
}
|
||
KILL(job->pid, SIGINT);
|
||
}
|
||
#endif /* RMT_WANTS_SIGNALS */
|
||
}
|
||
#endif
|
||
Lst_Close(stoppedJobs);
|
||
|
||
if (runINTERRUPT && !touchFlag) {
|
||
interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
|
||
if (interrupt != NULL) {
|
||
ignoreErrors = FALSE;
|
||
|
||
JobStart(interrupt, JOB_IGNDOTS, (Job *)0);
|
||
while (nJobs) {
|
||
Job_CatchOutput();
|
||
#ifndef RMT_WILL_WATCH
|
||
Job_CatchChildren(!usePipes);
|
||
#endif /* RMT_WILL_WATCH */
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
*-----------------------------------------------------------------------
|
||
* Job_Finish --
|
||
* Do final processing such as the running of the commands
|
||
* attached to the .END target.
|
||
*
|
||
* Results:
|
||
* Number of errors reported.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
int
|
||
Job_Finish()
|
||
{
|
||
if (postCommands != NULL && !Lst_IsEmpty(postCommands->commands)) {
|
||
if (errors) {
|
||
Error("Errors reported so .END ignored");
|
||
} else {
|
||
JobStart(postCommands, JOB_SPECIAL | JOB_IGNDOTS, NULL);
|
||
|
||
while (nJobs) {
|
||
Job_CatchOutput();
|
||
#ifndef RMT_WILL_WATCH
|
||
Job_CatchChildren(!usePipes);
|
||
#endif /* RMT_WILL_WATCH */
|
||
}
|
||
}
|
||
}
|
||
return(errors);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* 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()
|
||
{
|
||
aborting = ABORT_WAIT;
|
||
while (nJobs != 0) {
|
||
Job_CatchOutput();
|
||
#ifndef RMT_WILL_WATCH
|
||
Job_CatchChildren(!usePipes);
|
||
#endif /* RMT_WILL_WATCH */
|
||
}
|
||
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()
|
||
{
|
||
LstNode ln; /* element in job table */
|
||
Job *job; /* the job descriptor in that element */
|
||
int foo;
|
||
|
||
aborting = ABORT_ERROR;
|
||
|
||
if (nJobs) {
|
||
|
||
(void) Lst_Open(jobs);
|
||
while ((ln = Lst_Next(jobs)) != NULL) {
|
||
job = (Job *) Lst_Datum(ln);
|
||
|
||
/*
|
||
* kill the child process with increasingly drastic signals to make
|
||
* darn sure it's dead.
|
||
*/
|
||
#ifdef RMT_WANTS_SIGNALS
|
||
if (job->flags & JOB_REMOTE) {
|
||
Rmt_Signal(job, SIGINT);
|
||
Rmt_Signal(job, SIGKILL);
|
||
} else {
|
||
KILL(job->pid, SIGINT);
|
||
KILL(job->pid, SIGKILL);
|
||
}
|
||
#else
|
||
KILL(job->pid, SIGINT);
|
||
KILL(job->pid, SIGKILL);
|
||
#endif /* RMT_WANTS_SIGNALS */
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Catch as many children as want to report in at first, then give up
|
||
*/
|
||
while (waitpid((pid_t) -1, &foo, WNOHANG) > 0)
|
||
continue;
|
||
}
|
||
|
||
#ifdef REMOTE
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobFlagForMigration --
|
||
* Handle the eviction of a child. Called from RmtStatusChange.
|
||
* Flags the child as remigratable and then suspends it.
|
||
*
|
||
* Results:
|
||
* none.
|
||
*
|
||
* Side Effects:
|
||
* The job descriptor is flagged for remigration.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
JobFlagForMigration(hostID)
|
||
int hostID; /* ID of host we used, for matching children. */
|
||
{
|
||
Job *job; /* job descriptor for dead child */
|
||
LstNode jnode; /* list element for finding job */
|
||
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout, "JobFlagForMigration(%d) called.\n", hostID);
|
||
(void) fflush(stdout);
|
||
}
|
||
jnode = Lst_Find(jobs, (void *)hostID, JobCmpRmtID);
|
||
|
||
if (jnode == NULL) {
|
||
jnode = Lst_Find(stoppedJobs, (void *)hostID, JobCmpRmtID);
|
||
if (jnode == NULL) {
|
||
if (DEBUG(JOB)) {
|
||
Error("Evicting host(%d) not in table", hostID);
|
||
}
|
||
return;
|
||
}
|
||
}
|
||
job = (Job *) Lst_Datum(jnode);
|
||
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout,
|
||
"JobFlagForMigration(%d) found job '%s'.\n", hostID,
|
||
job->node->name);
|
||
(void) fflush(stdout);
|
||
}
|
||
|
||
KILL(job->pid, SIGSTOP);
|
||
|
||
job->flags |= JOB_REMIGRATE;
|
||
}
|
||
|
||
#endif
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* JobRestartJobs --
|
||
* Tries to restart stopped jobs if there are slots available.
|
||
* Note that this tries to restart them regardless of pending errors.
|
||
* It's not good to leave stopped jobs lying around!
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side Effects:
|
||
* Resumes(and possibly migrates) jobs.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static void
|
||
JobRestartJobs()
|
||
{
|
||
while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
|
||
if (DEBUG(JOB)) {
|
||
(void) fprintf(stdout,
|
||
"Job queue is not full. Restarting a stopped job.\n");
|
||
(void) fflush(stdout);
|
||
}
|
||
JobRestart((Job *)Lst_DeQueue(stoppedJobs));
|
||
}
|
||
}
|