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- /*
- * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
- * 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.
- */
-
- #ifdef DF_POSIX
- #include <misc.h>
- #include <bsdlib.h>
- #endif
-
-
- #ifndef lint
- static char sccsid[] = "@(#)job.c 5.15 (Berkeley) 3/1/91";
- #endif /* not lint */
-
- /*-
- * 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_End 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 "make.h"
- #ifdef _POSIX_SOURCE
- #include <signal.h>
- #else
- #include <sys/signal.h>
- #endif
- #include <sys/stat.h>
- #ifdef _POSIX_SOURCE
- #include <time.h>
- #else
- #include <sys/file.h>
- #include <sys/time.h>
- #endif
- #include <sys/wait.h>
- #include <fcntl.h>
- #include <errno.h>
- #include <stdio.h>
- #include <string.h>
- #include "job.h"
- #include "pathnames.h"
-
- #include <unistd.h>
-
- extern int errno;
-
- /*
- * error handling variables
- */
- int errors = 0; /* number of errors reported */
- 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 */
-
-
- /*
- * 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 the name of a file into which all shell commands are put. It is
- * used over by removing it before the child shell is executed. The XXXXX in
- * the string are replaced by the pid of the make process in a 5-character
- * field with leading zeroes.
- */
- static char tfile[] = 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,
- FALSE, "echo \"%s\"\n", "sh -c '%s || exit 0'\n",
- "v", "e",
- },
- /*
- * UNKNOWN.
- */
- {
- (char *)0,
- FALSE, (char *)0, (char *)0, (char *)0, 0,
- FALSE, (char *)0, (char *)0,
- (char *)0, (char *)0,
- }
- };
- 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 */
- char *shellPath = (char *) 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 */
- int nJobs; /* The number of children currently running */
- int nLocal; /* The number of local children */
- Lst jobs; /* The structures that describe them */
- 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
-
- GNode *lastNode; /* The node for which output was most recently
- * produced. */
- char *targFmt; /* Format string to use to head output from a
- * job when it's not the most-recent job heard
- * from */
- #define TARG_FMT "--- %s ---\n" /* Default format */
-
- /*
- * 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.
- */
- Lst stoppedJobs; /* Lst of Job structures describing
- * jobs that were stopped due to concurrency
- * limits or migration home */
-
-
- # if defined(USE_PGRP)
- #define KILL(pid,sig) killpg((pid),(sig))
- # else
- #define KILL(pid,sig) kill((pid),(sig))
- # endif
-
- static void JobRestart();
- static int JobStart();
- static void JobInterrupt();
-
- /*-
- *-----------------------------------------------------------------------
- * 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(job, signo)
- Job *job; /* Job to biff */
- int signo; /* Signal to send it */
- {
- #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.
- */
- 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 */
- {
- int mask;
-
- Lst_ForEach(jobs, JobCondPassSig, (ClientData)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);
- } else if ((signo == SIGHUP) || (signo == SIGTERM) || (signo == SIGQUIT)) {
- JobInterrupt(FALSE);
- }
-
- /*
- * Leave gracefully if SIGQUIT, rather than core dumping.
- */
- if (signo == SIGQUIT) {
- Finish();
- }
-
- /*
- * 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.
- */
- #ifndef DF_POSIX
- mask = sigblock(0);
- (void) sigsetmask(~0 & ~(1 << (signo-1)));
- #endif
- signal(signo, SIG_DFL);
-
- kill(getpid(), signo);
-
- Lst_ForEach(jobs, JobCondPassSig, (ClientData)SIGCONT);
-
- #ifndef DF_POSIX
- sigsetmask(mask);
- #endif
- signal(signo, JobPassSig);
-
- }
-
- /*-
- *-----------------------------------------------------------------------
- * 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)
- int pid; /* process id desired */
- Job *job; /* job to examine */
- {
- return (pid - job->pid);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * JobPrintCommand --
- * Put out another command for the given job. If the command starts
- * with an @ or a - we process it specially. In the former case,
- * so long as the -s and -n flags weren't given to make, we stick
- * a shell-specific echoOff command in the script. In the latter,
- * we ignore errors for the entire job, unless the shell has error
- * control.
- * If the command is just "..." we take all future commands for this
- * job to be commands to be executed once the entire graph has been
- * made and return non-zero to signal that the end of the commands
- * was reached. These commands are later attached to the postCommands
- * node and executed by Job_End when all things are done.
- * This function is called from JobStart via Lst_ForEach.
- *
- * 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 (cmd, job)
- char *cmd; /* command string to print */
- Job *job; /* 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 */
-
- noSpecials = (noExecute && ! (job->node->type & OP_MAKE));
-
- if (strcmp (cmd, "...") == 0) {
- if ((job->flags & JOB_IGNDOTS) == 0) {
- job->tailCmds = Lst_Succ (Lst_Member (job->node->commands,
- (ClientData)cmd));
- return (1);
- }
- return (0);
- }
-
- #define DBPRINTF(fmt, arg) if (DEBUG(JOB)) printf (fmt, arg); fprintf (job->cmdFILE, fmt, arg)
-
- numCommands += 1;
-
- /*
- * For debugging, we replace each command with the result of expanding
- * the variables in the command.
- */
- cmdNode = Lst_Member (job->node->commands, (ClientData)cmd);
- cmdStart = cmd = Var_Subst (cmd, job->node, FALSE);
- Lst_Replace (cmdNode, (ClientData)cmdStart);
-
- cmdTemplate = "%s\n";
-
- /*
- * Check for leading @' and -'s to control echoing and error checking.
- */
- while (*cmd == '@' || *cmd == '-') {
- if (*cmd == '@') {
- shutUp = TRUE;
- } else {
- errOff = TRUE;
- }
- 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)
- char *cmd;
- GNode *gn;
- {
- cmd = Var_Subst (cmd, gn, FALSE);
- (void)Lst_AtEnd (postCommands->commands, (ClientData)cmd);
- return (0);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * 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*/
- void
- JobFinish (job, status)
- Job *job; /* job to finish */
- union wait status; /* sub-why job went away */
- {
- Boolean done;
-
- if ((WIFEXITED(status.w_status) &&
- (((status.w_T.w_retcode != 0) && !(job->flags & JOB_IGNERR)))) ||
- (WIFSIGNALED(status.w_status) && (status.w_T.w_termsig != 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...
- */
- if (usePipes) {
- #ifdef RMT_WILL_WATCH
- Rmt_Ignore(job->inPipe);
- #else
- FD_CLR(job->inPipe, &outputs);
- #endif /* RMT_WILL_WATCH */
- if (job->outPipe != job->inPipe) {
- (void)close (job->outPipe);
- }
- JobDoOutput (job, TRUE);
- (void)close (job->inPipe);
- } else {
- (void)close (job->outFd);
- JobDoOutput (job, TRUE);
- }
-
- if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
- fclose(job->cmdFILE);
- }
- done = TRUE;
- } else if (WIFEXITED(status.w_status) && status.w_T.w_retcode != 0) {
- /*
- * 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. Note we don't
- * want to close down any of the streams until we know we're at the
- * end.
- */
- done = TRUE;
- } else {
- /*
- * No need to close things down or anything.
- */
- done = FALSE;
- }
-
- if (done ||
- WIFSTOPPED(status.w_status) ||
- (WIFSIGNALED(status.w_status) && (status.w_T.w_termsig == SIGCONT)) ||
- DEBUG(JOB))
- {
- FILE *out;
-
- if (!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");
- } else {
- out = stdout;
- }
-
- if (WIFEXITED(status.w_status)) {
- if (status.w_T.w_retcode != 0) {
- if (usePipes && job->node != lastNode) {
- fprintf (out, targFmt, job->node->name);
- lastNode = job->node;
- }
- fprintf (out, "*** Error code %d%s\n", status.w_T.w_retcode,
- (job->flags & JOB_IGNERR) ? " (ignored)" : "");
-
- if (job->flags & JOB_IGNERR) {
- status.w_status = 0;
- }
- } else if (DEBUG(JOB)) {
- if (usePipes && job->node != lastNode) {
- fprintf (out, targFmt, job->node->name);
- lastNode = job->node;
- }
- fprintf (out, "*** Completed successfully\n");
- }
- } else if (WIFSTOPPED(status.w_status)) {
- if (usePipes && job->node != lastNode) {
- fprintf (out, targFmt, job->node->name);
- lastNode = job->node;
- }
- if (! (job->flags & JOB_REMIGRATE)) {
- fprintf (out, "*** Stopped -- signal %d\n",
- status.w_T.w_retcode);
- }
- job->flags |= JOB_RESUME;
- (void)Lst_AtEnd(stoppedJobs, (ClientData)job);
- fflush(out);
- return;
- } else if (status.w_T.w_termsig == 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) {
- fprintf (out, targFmt, job->node->name);
- lastNode = job->node;
- }
- fprintf (out, "*** Continued\n");
- }
- if (! (job->flags & JOB_CONTINUING)) {
- JobRestart(job);
- } else {
- Lst_AtEnd(jobs, (ClientData)job);
- nJobs += 1;
- if (! (job->flags & JOB_REMOTE)) {
- nLocal += 1;
- }
- if (nJobs == maxJobs) {
- jobFull = TRUE;
- if (DEBUG(JOB)) {
- printf("Job queue is full.\n");
- }
- }
- }
- fflush(out);
- return;
- } else {
- if (usePipes && job->node != lastNode) {
- fprintf (out, targFmt, job->node->name);
- lastNode = job->node;
- }
- fprintf (out, "*** Signal %d\n", status.w_T.w_termsig);
- }
-
- 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 ((status.w_status == 0) &&
- !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;
- status.w_T.w_retcode = 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.w_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 != NILLNODE) {
- Lst_ForEachFrom (job->node->commands, job->tailCmds,
- JobSaveCommand,
- (ClientData)job->node);
- }
- job->node->made = MADE;
- Make_Update (job->node);
- free((Address)job);
- } else if (status.w_status) {
- errors += 1;
- free((Address)job);
- }
-
- while (!errors && !jobFull && !Lst_IsEmpty(stoppedJobs)) {
- JobRestart((Job *)Lst_DeQueue(stoppedJobs));
- }
-
- /*
- * 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.
- */
- (void) unlink (tfile);
- 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 timeval times[2]; /* Times for utimes() call */
- struct stat attr; /* Attributes of the file */
-
- 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) {
- printf ("touch %s\n", gn->name);
- }
-
- 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[0].tv_sec = times[1].tv_sec = now;
- times[0].tv_usec = times[1].tv_usec = 0;
- if (utimes(file, times) < 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) {
- #ifdef _POSIX_SOURCE
- lseek(streamID, 0L, SEEK_SET);
- #else
- lseek(streamID, 0L, L_SET);
- #endif
- write(streamID, &c, 1);
- }
-
- (void)close (streamID);
- } else
- printf("*** couldn't touch %s: %s", file, strerror(errno));
- }
- }
- }
-
- /*-
- *-----------------------------------------------------------------------
- * 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)(); /* 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 != NILGNODE) && !Lst_IsEmpty(DEFAULT->commands)) {
- /*
- * 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), gn);
- } 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.
- */
- if (gn->type & OP_OPTIONAL) {
- printf ("make: don't know how to make %s (ignored)\n",
- gn->name);
- } else if (keepgoing) {
- printf ("make: don't know how to make %s (continuing)\n",
- gn->name);
- return (FALSE);
- } else {
- (*abortProc) ("make: don't know how to make %s. Stop",
- 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;
-
- printf("Running %s %sly\n", job->node->name,
- job->flags&JOB_REMOTE?"remote":"local");
- printf("\tCommand: ");
- for (i = 0; argv[i] != (char *)NULL; i++) {
- printf("%s ", argv[i]);
- }
- printf("\n");
- }
-
- /*
- * Some jobs produce no output and it's disconcerting to have
- * no feedback of their running (since they produce no output, the
- * banner with their name in it never appears). This is an attempt to
- * provide that feedback, even if nothing follows it.
- */
- if ((lastNode != job->node) && (job->flags & JOB_FIRST) &&
- !(job->flags & JOB_SILENT))
- {
- printf(targFmt, job->node->name);
- lastNode = job->node;
- }
-
- #ifdef RMT_NO_EXEC
- if (job->flags & JOB_REMOTE) {
- goto jobExecFinish;
- }
- #endif /* RMT_NO_EXEC */
-
- #ifdef _POSIX_SOURCE
- puts("b fork job");
- if ((cpid = fork()) == -1) {
- puts("a fork job");
- #else
- if ((cpid = vfork()) == -1) {
- #endif
- 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.
- */
- (void) dup2(fileno(job->cmdFILE), 0);
- fcntl(0, F_SETFD, 0);
- #ifdef _POSIX_SOURCE
- lseek(0, 0, SEEK_SET);
- #else
- lseek(0, 0, L_SET);
- #endif
-
- if (usePipes) {
- /*
- * Set up the child's output to be routed through the pipe
- * we've created for it.
- */
- (void) dup2 (job->outPipe, 1);
- } else {
- /*
- * We're capturing output in a file, so we duplicate the
- * descriptor to the temporary file into the standard
- * output.
- */
- (void) dup2 (job->outFd, 1);
- }
- /*
- * The output channels are marked close on exec. This bit was
- * duplicated by the dup2 (on some systems), so we have to clear
- * it before routing the shell's error output to the same place as
- * its standard output.
- */
- fcntl(1, F_SETFD, 0);
- (void) dup2 (1, 2);
-
- #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.
- */
-
- (void) setpgrp(0, getpid());
- #endif USE_PGRP
-
- puts("b execv job");
- (void) execv (shellPath, argv);
- puts("a execv job");
- (void) write (2, "Could not execute shell\n",
- sizeof ("Could not execute shell"));
- _exit (1);
- } else {
- 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) {
- job->rmtID = (char *)0;
- } else {
- nLocal += 1;
- /*
- * XXX: Used to not happen if CUSTOMS. Why?
- */
- if (job->cmdFILE != stdout) {
- fclose(job->cmdFILE);
- job->cmdFILE = NULL;
- }
- }
- }
-
- jobExecFinish:
- /*
- * Now the job is actually running, add it to the table.
- */
- nJobs += 1;
- (void)Lst_AtEnd (jobs, (ClientData)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] = (char *)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 */
- {
- if (job->flags & JOB_REMIGRATE) {
- if (DEBUG(JOB)) {
- printf("Remigrating %x\n", job->pid);
- }
- 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 (DEBUG(JOB)) {
- printf("resuming on local machine\n");
- }
- KILL(job->pid, SIGCONT);
- nLocal +=1;
- job->flags &= ~(JOB_REMIGRATE|JOB_RESUME);
- } else {
- /*
- * Job cannot be restarted. Mark the table as full and
- * place the job back on the list of stopped jobs.
- */
- if (DEBUG(JOB)) {
- printf("holding\n");
- }
- (void)Lst_AtFront(stoppedJobs, (ClientData)job);
- jobFull = TRUE;
- if (DEBUG(JOB)) {
- printf("Job queue is full.\n");
- }
- return;
- }
-
- (void)Lst_AtEnd(jobs, (ClientData)job);
- nJobs += 1;
- if (nJobs == maxJobs) {
- jobFull = TRUE;
- if (DEBUG(JOB)) {
- printf("Job queue is full.\n");
- }
- }
- } 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)) {
- printf("Restarting %s...", job->node->name);
- }
- 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)) {
- printf("holding\n");
- }
- (void)Lst_AtFront(stoppedJobs, (ClientData)job);
- jobFull = TRUE;
- if (DEBUG(JOB)) {
- printf("Job queue is full.\n");
- }
- return;
- } else {
- /*
- * Job may be run locally.
- */
- if (DEBUG(JOB)) {
- printf("running locally\n");
- }
- job->flags &= ~JOB_REMOTE;
- }
- JobExec(job, argv);
- } else {
- /*
- * The job has stopped and needs to be restarted. Why it stopped,
- * we don't know...
- */
- if (DEBUG(JOB)) {
- printf("Resuming %s...", job->node->name);
- }
- if (((job->flags & JOB_REMOTE) ||
- (nLocal < maxLocal) ||
- (((job->flags & JOB_SPECIAL)) &&
- (maxLocal == 0))) &&
- (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;
- extern int errno;
- union wait 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;
- status.w_T.w_termsig = SIGCONT;
- JobFinish(job, status);
-
- job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
- if (DEBUG(JOB)) {
- printf("done\n");
- }
- } else {
- Error("couldn't resume %s: %s",
- job->node->name, strerror(errno));
- status.w_status = 0;
- status.w_T.w_retcode = 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)) {
- printf("table full\n");
- }
- (void)Lst_AtFront(stoppedJobs, (ClientData)job);
- jobFull = TRUE;
- if (DEBUG(JOB)) {
- printf("Job queue is full.\n");
- }
- }
- }
- }
-
- /*-
- *-----------------------------------------------------------------------
- * 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 */
- short 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. */
- {
- register Job *job; /* new job descriptor */
- char *argv[4]; /* Argument vector to shell */
- char args[5]; /* arguments to shell */
- static int jobno = 0; /* job number of catching output in a file */
- 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 */
-
- if (previous != (Job *)NULL) {
- previous->flags &= ~ (JOB_FIRST|JOB_IGNERR|JOB_SILENT|JOB_REMOTE);
- job = previous;
- } else {
- job = (Job *) emalloc (sizeof (Job));
- if (job == (Job *)NULL) {
- Punt("JobStart out of memory");
- }
- flags |= JOB_FIRST;
- }
-
- job->node = gn;
- job->tailCmds = NILLNODE;
-
- /*
- * 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 (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();
- }
-
- job->cmdFILE = fopen (tfile, "w+");
- if (job->cmdFILE == (FILE *) NULL) {
- Punt ("Could not open %s", tfile);
- }
- 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 (1) {
- /*
- * 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 == NILLNODE) ||
- JobPrintCommand ((char *)Lst_Datum (ln), 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...
- */
- 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);
- }
- }
- }
- } else {
- /*
- * We can do all the commands at once. hooray for sanity
- */
- numCommands = 0;
- Lst_ForEach (gn->commands, JobPrintCommand, (ClientData)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) {
- printf (targFmt, gn->name);
- 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, (ClientData)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) {
- (void) unlink (tfile);
- fclose(job->cmdFILE);
- } else {
- 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 != NILLNODE) {
- Lst_ForEachFrom(job->node->commands, job->tailCmds,
- JobSaveCommand,
- (ClientData)job->node);
- }
- Make_Update(job->node);
- }
- free((Address)job);
- return(JOB_FINISHED);
- } else {
- free((Address)job);
- return(JOB_ERROR);
- }
- } else {
- fflush (job->cmdFILE);
- (void) unlink (tfile);
- }
-
- /*
- * 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. This is just
- * tfile with two extra digits tacked on -- jobno.
- */
- if (job->flags & JOB_FIRST) {
- if (usePipes) {
- int fd[2];
- (void) pipe(fd);
- job->inPipe = fd[0];
- job->outPipe = fd[1];
- (void)fcntl (job->inPipe, F_SETFD, 1);
- (void)fcntl (job->outPipe, F_SETFD, 1);
- } else {
- printf ("Remaking `%s'\n", gn->name);
- fflush (stdout);
- sprintf (job->outFile, "%s%02d", tfile, jobno);
- jobno = (jobno + 1) % 100;
- job->outFd = open(job->outFile,O_WRONLY|O_CREAT|O_APPEND,0600);
- (void)fcntl (job->outFd, F_SETFD, 1);
- }
- }
-
- local = TRUE;
-
- if (local && (((nLocal >= maxLocal) &&
- !(job->flags & JOB_SPECIAL) &&
- (maxLocal != 0))))
- {
- /*
- * 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.
- */
- jobFull = TRUE;
-
- if (DEBUG(JOB)) {
- printf("Can only run job locally.\n");
- }
- job->flags |= JOB_RESTART;
- (void)Lst_AtEnd(stoppedJobs, (ClientData)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)) {
- printf("Local job queue is full.\n");
- }
- }
- JobExec(job, argv);
- }
- return(JOB_RUNNING);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * 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.
- *-----------------------------------------------------------------------
- */
- void
- JobDoOutput (job, finish)
- register 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 */
- register int nr; /* number of bytes read */
- register int i; /* auxiliary index into outBuf */
- register int max; /* limit for i (end of current data) */
- int nRead; /* (Temporary) number of bytes read */
-
- char c; /* character after noPrint string */
- 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:
-
- nRead = read (job->inPipe, &job->outBuf[job->curPos],
- JOB_BUFSIZE - job->curPos);
- if (nRead < 0) {
- if (DEBUG(JOB)) {
- perror("JobDoOutput(piperead)");
- }
- nr = 0;
- } else {
- nr = nRead;
- }
-
- /*
- * If we hit the end-of-file (the job is dead), we must flush its
- * remaining output, so pretend we read a newline if there's any
- * output remaining in the buffer.
- * Also clear the 'finish' flag so we stop looping.
- */
- if ((nr == 0) && (job->curPos != 0)) {
- job->outBuf[job->curPos] = '\n';
- nr = 1;
- finish = FALSE;
- } else if (nr == 0) {
- finish = FALSE;
- }
-
- /*
- * Look for the last newline in the bytes we just got. If there is
- * one, break out of the loop with 'i' as its index and gotNL set
- * TRUE.
- */
- max = job->curPos + nr;
- for (i = job->curPos + nr - 1; i >= job->curPos; i--) {
- if (job->outBuf[i] == '\n') {
- gotNL = TRUE;
- break;
- } else if (job->outBuf[i] == '\0') {
- /*
- * Why?
- */
- job->outBuf[i] = ' ';
- }
- }
-
- if (!gotNL) {
- job->curPos += nr;
- if (job->curPos == JOB_BUFSIZE) {
- /*
- * If we've run out of buffer space, we have no choice
- * but to print the stuff. sigh.
- */
- gotNL = TRUE;
- i = job->curPos;
- }
- }
- if (gotNL) {
- /*
- * 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, preceeded
- * 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) {
- register char *cp, *ecp;
-
- cp = job->outBuf;
- if (commandShell->noPrint) {
- ecp = Str_FindSubstring(job->outBuf,
- commandShell->noPrint);
- while (ecp != (char *)NULL) {
- if (cp != ecp) {
- *ecp = '\0';
- if (job->node != lastNode) {
- printf (targFmt, job->node->name);
- 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.
- */
- printf ("%s", cp);
- }
- cp = ecp + commandShell->noPLen;
- if (cp != &job->outBuf[i]) {
- /*
- * 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 {
- break;
- }
- }
- }
-
- /*
- * 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) {
- printf (targFmt, job->node->name);
- lastNode = job->node;
- }
- printf ("%s\n", cp);
- }
-
- fflush (stdout);
- }
- if (i < max - 1) {
- bcopy (&job->outBuf[i + 1], /* shift the remaining */
- job->outBuf, /* characters down */
- 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 != (FILE *) NULL) {
- printf ("Results of making %s:\n", job->node->name);
- while (fgets (inLine, sizeof(inLine), oFILE) != NULL) {
- register char *cp, *ecp, *endp;
-
- cp = inLine;
- endp = inLine + strlen(inLine);
- if (endp[-1] == '\n') {
- *--endp = '\0';
- }
- if (commandShell->noPrint) {
- ecp = Str_FindSubstring(cp, commandShell->noPrint);
- while (ecp != (char *)NULL) {
- if (cp != ecp) {
- *ecp = '\0';
- /*
- * 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.
- */
- printf ("%s", cp);
- }
- 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 {
- break;
- }
- }
- }
-
- /*
- * 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') {
- printf ("%s\n", cp);
- }
- }
- fclose (oFILE);
- (void) unlink (job->outFile);
- }
- }
- fflush(stdout);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * 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 */
- register Job *job; /* job descriptor for dead child */
- LstNode jnode; /* list element for finding job */
- union wait status; /* Exit/termination status */
-
- /*
- * Don't even bother if we know there's no one around.
- */
- if (nLocal == 0) {
- return;
- }
-
- #ifndef DF_POSIX
- while ((pid = wait3((int *)&status, (block?0:WNOHANG)|WUNTRACED,
- (struct rusage *)0)) > 0)
- {
- if (DEBUG(JOB))
- printf("Process %d exited or stopped.\n", pid);
-
-
- jnode = Lst_Find (jobs, (ClientData)pid, JobCmpPid);
-
- if (jnode == NILLNODE) {
- if (WIFSIGNALED(status.w_status)
- && (status.w_T.w_termsig == SIGCONT)) {
- jnode = Lst_Find(stoppedJobs, (ClientData)pid, JobCmpPid);
- if (jnode == NILLNODE) {
- 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)) {
- printf("Job queue is no longer full.\n");
- }
- jobFull = FALSE;
- nLocal -= 1;
- }
-
- JobFinish (job, status);
- }
- #endif
- }
-
- /*-
- *-----------------------------------------------------------------------
- * 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;
- register LstNode ln;
- register Job *job;
- int pnJobs; /* Previous nJobs */
-
- 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;
-
- #ifndef DF_POSIX
- if ((nfds = select (FD_SETSIZE, &readfds, (int *) 0, (int *) 0, &timeout)) < 0)
- {
- return;
- } else {
- #else
- {
- #endif
- if (Lst_Open (jobs) == FAILURE) {
- Punt ("Cannot open job table");
- }
- while (nfds && (ln = Lst_Next (jobs)) != NILLNODE) {
- 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, (Job *)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 */
-
- sprintf (tfile, "/tmp/make%05d", getpid());
-
- jobs = Lst_Init (FALSE);
- stoppedJobs = Lst_Init(FALSE);
- maxJobs = maxproc;
- maxLocal = maxlocal;
- nJobs = 0;
- nLocal = 0;
- jobFull = FALSE;
-
- aborting = 0;
- errors = 0;
-
- lastNode = NILGNODE;
-
- if (maxJobs == 1) {
- /*
- * 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 == (char *) 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;
- //#ifndef DF_POSIX
- shellPath = str_concat (_PATH_DEFSHELLDIR, shellName, STR_ADDSLASH);
- //#endif
- }
-
- if (commandShell->exit == (char *)NULL) {
- commandShell->exit = "";
- }
- if (commandShell->echo == (char *)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) {
- signal (SIGINT, JobPassSig);
- }
- if (signal (SIGHUP, SIG_IGN) != SIG_IGN) {
- signal (SIGHUP, JobPassSig);
- }
- if (signal (SIGQUIT, SIG_IGN) != SIG_IGN) {
- signal (SIGQUIT, JobPassSig);
- }
- if (signal (SIGTERM, SIG_IGN) != SIG_IGN) {
- 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) {
- signal (SIGTSTP, JobPassSig);
- }
- if (signal (SIGTTOU, SIG_IGN) != SIG_IGN) {
- signal (SIGTTOU, JobPassSig);
- }
- if (signal (SIGTTIN, SIG_IGN) != SIG_IGN) {
- signal (SIGTTIN, JobPassSig);
- }
- if (signal (SIGWINCH, SIG_IGN) != SIG_IGN) {
- signal (SIGWINCH, JobPassSig);
- }
- #endif
-
- begin = Targ_FindNode (".BEGIN", TARG_NOCREATE);
-
- if (begin != NILGNODE) {
- 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;
- while (!jobFull && !Lst_IsEmpty(stoppedJobs)) {
- JobRestart((Job *)Lst_DeQueue(stoppedJobs));
- }
- 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 */
- {
- register Shell *sh; /* Pointer into shells table */
- Shell *match; /* Longest-matching shell */
- register char *cp1,
- *cp2;
- char *eoname;
-
- eoname = name + strlen (name);
-
- match = (Shell *) 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 == (Shell *) NULL ||
- strlen (match->name) < strlen (sh->name)) {
- match = sh;
- }
- }
- return (match == (Shell *) 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;
- register char **argv;
- register int argc;
- char *path;
- Shell newShell;
- Boolean fullSpec = FALSE;
-
- while (isspace (*line)) {
- line++;
- }
- words = brk_string (line, &wordCount);
-
- bzero ((Address)&newShell, sizeof(newShell));
-
- /*
- * Parse the specification by keyword
- */
- for (path = (char *)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 == (char *)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 == (char *)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 = rindex (path, '/');
- if (path == (char *)NULL) {
- path = shellPath;
- } else {
- path += 1;
- }
- if (newShell.name != (char *)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 == (char *)NULL) {
- commandShell->errCheck = "";
- }
- if (commandShell->ignErr == (char *)NULL) {
- commandShell->ignErr = "%s\n";
- }
- }
-
- /*
- * Do not free up the words themselves, since they might be in use by the
- * shell specification...
- */
- free (words);
- return SUCCESS;
- }
-
- /*-
- *-----------------------------------------------------------------------
- * JobInterrupt --
- * Handle the receipt of an interrupt.
- *
- * Results:
- * None
- *
- * Side Effects:
- * All children are killed. Another job will be started if the
- * .INTERRUPT target was given.
- *-----------------------------------------------------------------------
- */
- static void
- JobInterrupt (runINTERRUPT)
- int runINTERRUPT; /* Non-zero if commands for the .INTERRUPT
- * target should be executed */
- {
- /*
- ar - change variable interrupt to interrupt_a to allow compile
- */
- LstNode ln; /* element in job table */
- Job *job; /* job descriptor in that element */
- GNode *interrupt_a; /* the node describing the .INTERRUPT target */
-
- aborting = ABORT_INTERRUPT;
-
- (void)Lst_Open (jobs);
- while ((ln = Lst_Next (jobs)) != NILLNODE) {
- job = (Job *) Lst_Datum (ln);
-
- if (!Targ_Precious (job->node)) {
- char *file = (job->node->path == (char *)NULL ?
- job->node->name :
- job->node->path);
- if (unlink (file) == 0) {
- 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, SIGINT)) {
- /*
- * If couldn't kill the thing, finish it out now with an
- * error code, since no exit report will come in likely.
- */
- union wait status;
-
- status.w_status = 0;
- status.w_T.w_retcode = 1;
- JobFinish(job, status);
- }
- } else if (job->pid) {
- KILL(job->pid, SIGINT);
- }
- #else
- if (job->pid) {
- KILL(job->pid, SIGINT);
- }
- #endif /* RMT_WANTS_SIGNALS */
- }
- Lst_Close (jobs);
-
- if (runINTERRUPT && !touchFlag) {
- interrupt_a = Targ_FindNode (".INTERRUPT", TARG_NOCREATE);
- if (interrupt_a != NILGNODE) {
- ignoreErrors = FALSE;
-
- JobStart (interrupt_a, JOB_IGNDOTS, (Job *)0);
- while (nJobs) {
- Job_CatchOutput();
- #ifndef RMT_WILL_WATCH
- Job_CatchChildren (!usePipes);
- #endif /* RMT_WILL_WATCH */
- }
- }
- }
- (void) unlink (tfile);
- exit (0);
- }
-
- /*
- *-----------------------------------------------------------------------
- * Job_End --
- * Do final processing such as the running of the commands
- * attached to the .END target.
- *
- * Results:
- * Number of errors reported.
- *
- * Side Effects:
- * The process' temporary file (tfile) is removed if it still
- * existed.
- *-----------------------------------------------------------------------
- */
- int
- Job_End ()
- {
- if (postCommands != NILGNODE && !Lst_IsEmpty (postCommands->commands)) {
- if (errors) {
- Error ("Errors reported so .END ignored");
- } else {
- JobStart (postCommands, JOB_SPECIAL | JOB_IGNDOTS,
- (Job *)0);
-
- while (nJobs) {
- Job_CatchOutput();
- #ifndef RMT_WILL_WATCH
- Job_CatchChildren (!usePipes);
- #endif /* RMT_WILL_WATCH */
- }
- }
- }
- (void) unlink (tfile);
- 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)) != NILLNODE) {
- 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 */
- }
- }
-
- #ifndef DF_POSIX
- /*
- * Catch as many children as want to report in at first, then give up
- */
- while (wait3(&foo, WNOHANG, (struct rusage *)0) > 0) {
- ;
- }
- #endif
- (void) unlink (tfile);
- }
-