3396 lines
84 KiB
C
3396 lines
84 KiB
C
/*-
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* Copyright (c) 1988, 1989, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1988, 1989 by Adam de Boor
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)job.c 8.2 (Berkeley) 3/19/94
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*-
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* job.c --
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* handle the creation etc. of our child processes.
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*
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* Interface:
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* Job_Make Start the creation of the given target.
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*
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* Job_CatchChildren
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* Check for and handle the termination of any children.
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* This must be called reasonably frequently to keep the
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* whole make going at a decent clip, since job table
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* entries aren't removed until their process is caught
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* this way. Its single argument is TRUE if the function
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* should block waiting for a child to terminate.
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*
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* Job_CatchOutput Print any output our children have produced. Should
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* also be called fairly frequently to keep the user
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* informed of what's going on. If no output is waiting,
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* it will block for a time given by the SEL_* constants,
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* below, or until output is ready.
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*
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* Job_Init Called to intialize this module. in addition, any
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* commands attached to the .BEGIN target are executed
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* before this function returns. Hence, the makefile must
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* have been parsed before this function is called.
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*
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* Job_Full Return TRUE if the job table is filled.
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*
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* Job_Empty Return TRUE if the job table is completely empty.
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*
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* Job_Finish Perform any final processing which needs doing. This
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* includes the execution of any commands which have
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* been/were attached to the .END target. It should only
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* be called when the job table is empty.
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*
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* Job_AbortAll Abort all currently running jobs. It doesn't handle
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* output or do anything for the jobs, just kills them.
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* It should only be called in an emergency, as it were.
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*
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* Job_CheckCommands
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* Verify that the commands for a target are ok. Provide
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* them if necessary and possible.
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*
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* Job_Touch Update a target without really updating it.
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*
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* Job_Wait Wait for all currently-running jobs to finish.
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*
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* compat.c --
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* The routines in this file implement the full-compatibility
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* mode of PMake. Most of the special functionality of PMake
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* is available in this mode. Things not supported:
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* - different shells.
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* - friendly variable substitution.
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*
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* Interface:
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* Compat_Run Initialize things for this module and recreate
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* thems as need creatin'
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*/
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#include <sys/queue.h>
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#include <sys/types.h>
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#include <sys/select.h>
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#include <sys/stat.h>
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#ifdef USE_KQUEUE
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#include <sys/event.h>
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#endif
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#include <sys/wait.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <limits.h>
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#include <string.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <utime.h>
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#include "arch.h"
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#include "buf.h"
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#include "config.h"
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#include "dir.h"
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#include "globals.h"
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#include "GNode.h"
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#include "job.h"
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#include "make.h"
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#include "parse.h"
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#include "proc.h"
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#include "shell.h"
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#include "str.h"
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#include "suff.h"
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#include "targ.h"
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#include "util.h"
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#include "var.h"
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#define TMPPAT "makeXXXXXXXXXX"
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#define TMPDIR "/tmp"
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#ifndef USE_KQUEUE
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/*
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* The SEL_ constants determine the maximum amount of time spent in select
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* before coming out to see if a child has finished. SEL_SEC is the number of
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* seconds and SEL_USEC is the number of micro-seconds
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*/
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#define SEL_SEC 2
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#define SEL_USEC 0
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#endif /* !USE_KQUEUE */
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/*
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* Job Table definitions.
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*
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* The job "table" is kept as a linked Lst in 'jobs', with the number of
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* active jobs maintained in the 'nJobs' variable. At no time will this
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* exceed the value of 'maxJobs', initialized by the Job_Init function.
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*
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* When a job is finished, the Make_Update function is called on each of the
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* parents of the node which was just remade. This takes care of the upward
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* traversal of the dependency graph.
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*/
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#define JOB_BUFSIZE 1024
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typedef struct Job {
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pid_t pid; /* The child's process ID */
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struct GNode *node; /* The target the child is making */
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/*
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* A LstNode for the first command to be saved after the job completes.
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* This is NULL if there was no "..." in the job's commands.
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*/
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LstNode *tailCmds;
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/*
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* An FILE* for writing out the commands. This is only
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* used before the job is actually started.
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*/
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FILE *cmdFILE;
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/*
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* A word of flags which determine how the module handles errors,
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* echoing, etc. for the job
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*/
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short flags; /* Flags to control treatment of job */
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#define JOB_IGNERR 0x001 /* Ignore non-zero exits */
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#define JOB_SILENT 0x002 /* no output */
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#define JOB_SPECIAL 0x004 /* Target is a special one. i.e. run it locally
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* if we can't export it and maxLocal is 0 */
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#define JOB_IGNDOTS 0x008 /* Ignore "..." lines when processing
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* commands */
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#define JOB_FIRST 0x020 /* Job is first job for the node */
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#define JOB_RESTART 0x080 /* Job needs to be completely restarted */
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#define JOB_RESUME 0x100 /* Job needs to be resumed b/c it stopped,
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* for some reason */
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#define JOB_CONTINUING 0x200 /* We are in the process of resuming this job.
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* Used to avoid infinite recursion between
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* JobFinish and JobRestart */
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/* union for handling shell's output */
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union {
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/*
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* This part is used when usePipes is true.
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* The output is being caught via a pipe and the descriptors
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* of our pipe, an array in which output is line buffered and
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* the current position in that buffer are all maintained for
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* each job.
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*/
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struct {
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/*
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* Input side of pipe associated with
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* job's output channel
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*/
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int op_inPipe;
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/*
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* Output side of pipe associated with job's
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* output channel
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*/
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int op_outPipe;
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/*
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* Buffer for storing the output of the
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* job, line by line
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*/
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char op_outBuf[JOB_BUFSIZE + 1];
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/* Current position in op_outBuf */
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int op_curPos;
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} o_pipe;
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/*
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* If usePipes is false the output is routed to a temporary
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* file and all that is kept is the name of the file and the
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* descriptor open to the file.
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*/
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struct {
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/* Name of file to which shell output was rerouted */
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char of_outFile[PATH_MAX];
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/*
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* Stream open to the output file. Used to funnel all
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* from a single job to one file while still allowing
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* multiple shell invocations
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*/
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int of_outFd;
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} o_file;
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} output; /* Data for tracking a shell's output */
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TAILQ_ENTRY(Job) link; /* list link */
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} Job;
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#define outPipe output.o_pipe.op_outPipe
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#define inPipe output.o_pipe.op_inPipe
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#define outBuf output.o_pipe.op_outBuf
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#define curPos output.o_pipe.op_curPos
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#define outFile output.o_file.of_outFile
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#define outFd output.o_file.of_outFd
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TAILQ_HEAD(JobList, Job);
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/*
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* error handling variables
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*/
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static int aborting = 0; /* why is the make aborting? */
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#define ABORT_ERROR 1 /* Because of an error */
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#define ABORT_INTERRUPT 2 /* Because it was interrupted */
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#define ABORT_WAIT 3 /* Waiting for jobs to finish */
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/*
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* XXX: Avoid SunOS bug... FILENO() is fp->_file, and file
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* is a char! So when we go above 127 we turn negative!
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*/
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#define FILENO(a) ((unsigned)fileno(a))
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/*
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* post-make command processing. The node postCommands is really just the
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* .END target but we keep it around to avoid having to search for it
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* all the time.
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*/
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static GNode *postCommands;
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/*
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* The number of commands actually printed for a target. Should this
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* number be 0, no shell will be executed.
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*/
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static int numCommands;
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/*
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* Return values from JobStart.
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*/
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#define JOB_RUNNING 0 /* Job is running */
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#define JOB_ERROR 1 /* Error in starting the job */
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#define JOB_FINISHED 2 /* The job is already finished */
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#define JOB_STOPPED 3 /* The job is stopped */
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/*
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* The maximum number of jobs that may run. This is initialize from the
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* -j argument for the leading make and from the FIFO for sub-makes.
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*/
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static int maxJobs;
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static int nJobs; /* The number of children currently running */
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/* The structures that describe them */
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static struct JobList jobs = TAILQ_HEAD_INITIALIZER(jobs);
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static Boolean jobFull; /* Flag to tell when the job table is full. It
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* is set TRUE when (1) the total number of
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* running jobs equals the maximum allowed */
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#ifdef USE_KQUEUE
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static int kqfd; /* File descriptor obtained by kqueue() */
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#else
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static fd_set outputs; /* Set of descriptors of pipes connected to
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* the output channels of children */
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#endif
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static GNode *lastNode; /* The node for which output was most recently
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* produced. */
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static const char *targFmt; /* Format string to use to head output from a
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* job when it's not the most-recent job heard
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* from */
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static char *targPrefix = NULL; /* What we print at the start of targFmt */
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#define TARG_FMT "%s %s ---\n" /* Default format */
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#define MESSAGE(fp, gn) \
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fprintf(fp, targFmt, targPrefix, gn->name);
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/*
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* When JobStart attempts to run a job but isn't allowed to
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* or when Job_CatchChildren detects a job that has
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* been stopped somehow, the job is placed on the stoppedJobs queue to be run
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* when the next job finishes.
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*
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* Lst of Job structures describing jobs that were stopped due to
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* concurrency limits or externally
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*/
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static struct JobList stoppedJobs = TAILQ_HEAD_INITIALIZER(stoppedJobs);
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static int fifoFd; /* Fd of our job fifo */
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static char fifoName[] = "/tmp/make_fifo_XXXXXXXXX";
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static int fifoMaster;
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static volatile sig_atomic_t interrupted;
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#if defined(USE_PGRP) && defined(SYSV)
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# define KILL(pid, sig) killpg(-(pid), (sig))
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#else
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# if defined(USE_PGRP)
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# define KILL(pid, sig) killpg((pid), (sig))
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# else
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# define KILL(pid, sig) kill((pid), (sig))
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# endif
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#endif
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/*
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* Grmpf... There is no way to set bits of the wait structure
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* anymore with the stupid W*() macros. I liked the union wait
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* stuff much more. So, we devise our own macros... This is
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* really ugly, use dramamine sparingly. You have been warned.
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*/
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#define W_SETMASKED(st, val, fun) \
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{ \
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int sh = (int)~0; \
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int mask = fun(sh); \
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\
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for (sh = 0; ((mask >> sh) & 1) == 0; sh++) \
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continue; \
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*(st) = (*(st) & ~mask) | ((val) << sh); \
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}
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#define W_SETTERMSIG(st, val) W_SETMASKED(st, val, WTERMSIG)
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#define W_SETEXITSTATUS(st, val) W_SETMASKED(st, val, WEXITSTATUS)
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static void JobRestart(Job *);
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static int JobStart(GNode *, int, Job *);
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static void JobDoOutput(Job *, Boolean);
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static void JobInterrupt(int, int);
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static void JobRestartJobs(void);
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static int Compat_RunCommand(char *, struct GNode *);
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static GNode *curTarg = NULL;
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static GNode *ENDNode;
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/**
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* Create a fifo file with a uniq filename, and returns a file
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* descriptor to that fifo.
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*/
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static int
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mkfifotemp(char *template)
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{
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char *start;
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char *pathend;
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char *ptr;
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const unsigned char padchar[] =
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"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
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if (template[0] == '\0') {
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errno = EINVAL; /* bad input string */
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return (-1);
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}
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/* Find end of template string. */
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pathend = strchr(template, '\0');
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ptr = pathend - 1;
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/*
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* Starting from the end of the template replace spaces with 'X' in
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* them with random characters until there are no more 'X'.
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*/
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while (ptr >= template && *ptr == 'X') {
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uint32_t rand_num =
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#if __FreeBSD_version < 800041
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arc4random() % (sizeof(padchar) - 1);
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#else
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arc4random_uniform(sizeof(padchar) - 1);
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#endif
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*ptr-- = padchar[rand_num];
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}
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start = ptr + 1;
|
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|
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/* Check the target directory. */
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for (; ptr > template; --ptr) {
|
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if (*ptr == '/') {
|
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struct stat sbuf;
|
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*ptr = '\0';
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if (stat(template, &sbuf) != 0)
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return (-1);
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|
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if (!S_ISDIR(sbuf.st_mode)) {
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errno = ENOTDIR;
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return (-1);
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}
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*ptr = '/';
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break;
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}
|
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}
|
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for (;;) {
|
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if (mkfifo(template, 0600) == 0) {
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int fd;
|
|
|
|
if ((fd = open(template, O_RDWR, 0600)) < 0) {
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unlink(template);
|
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return (-1);
|
|
} else {
|
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return (fd);
|
|
}
|
|
} else {
|
|
if (errno != EEXIST) {
|
|
return (-1);
|
|
}
|
|
}
|
|
|
|
/*
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|
* If we have a collision, cycle through the space of
|
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* filenames.
|
|
*/
|
|
for (ptr = start;;) {
|
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char *pad;
|
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|
if (*ptr == '\0' || ptr == pathend)
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return (-1);
|
|
|
|
pad = strchr(padchar, *ptr);
|
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if (pad == NULL || *++pad == '\0') {
|
|
*ptr++ = padchar[0];
|
|
} else {
|
|
*ptr++ = *pad;
|
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break;
|
|
}
|
|
}
|
|
}
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
static void
|
|
catch_child(int sig __unused)
|
|
{
|
|
}
|
|
|
|
/**
|
|
*/
|
|
void
|
|
Proc_Init(void)
|
|
{
|
|
/*
|
|
* Catch SIGCHLD so that we get kicked out of select() when we
|
|
* need to look at a child. This is only known to matter for the
|
|
* -j case (perhaps without -P).
|
|
*
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|
* XXX this is intentionally misplaced.
|
|
*/
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|
struct sigaction sa;
|
|
|
|
sigemptyset(&sa.sa_mask);
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|
sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
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sa.sa_handler = catch_child;
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sigaction(SIGCHLD, &sa, NULL);
|
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}
|
|
|
|
/**
|
|
* Wait for child process to terminate.
|
|
*/
|
|
static int
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|
ProcWait(ProcStuff *ps)
|
|
{
|
|
pid_t pid;
|
|
int status;
|
|
|
|
/*
|
|
* Wait for the process to exit.
|
|
*/
|
|
for (;;) {
|
|
pid = wait(&status);
|
|
if (pid == -1 && errno != EINTR) {
|
|
Fatal("error in wait: %d", pid);
|
|
/* NOTREACHED */
|
|
}
|
|
if (pid == ps->child_pid) {
|
|
break;
|
|
}
|
|
if (interrupted) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return (status);
|
|
}
|
|
|
|
/**
|
|
* JobCatchSignal
|
|
* Got a signal. Set global variables and hope that someone will
|
|
* handle it.
|
|
*/
|
|
static void
|
|
JobCatchSig(int signo)
|
|
{
|
|
|
|
interrupted = signo;
|
|
}
|
|
|
|
/**
|
|
* JobPassSig --
|
|
* Pass a signal on to all local jobs if
|
|
* USE_PGRP is defined, then die ourselves.
|
|
*
|
|
* Side Effects:
|
|
* We die by the same signal.
|
|
*/
|
|
static void
|
|
JobPassSig(int signo)
|
|
{
|
|
Job *job;
|
|
sigset_t nmask, omask;
|
|
struct sigaction act;
|
|
|
|
sigemptyset(&nmask);
|
|
sigaddset(&nmask, signo);
|
|
sigprocmask(SIG_SETMASK, &nmask, &omask);
|
|
|
|
DEBUGF(JOB, ("JobPassSig(%d) called.\n", signo));
|
|
TAILQ_FOREACH(job, &jobs, link) {
|
|
DEBUGF(JOB, ("JobPassSig passing signal %d to child %jd.\n",
|
|
signo, (intmax_t)job->pid));
|
|
KILL(job->pid, 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.
|
|
* XXX this comment seems wrong.
|
|
*/
|
|
act.sa_handler = SIG_DFL;
|
|
sigemptyset(&act.sa_mask);
|
|
act.sa_flags = 0;
|
|
sigaction(signo, &act, NULL);
|
|
|
|
DEBUGF(JOB, ("JobPassSig passing signal to self, mask = %x.\n",
|
|
~0 & ~(1 << (signo - 1))));
|
|
signal(signo, SIG_DFL);
|
|
|
|
KILL(getpid(), signo);
|
|
|
|
signo = SIGCONT;
|
|
TAILQ_FOREACH(job, &jobs, link) {
|
|
DEBUGF(JOB, ("JobPassSig passing signal %d to child %jd.\n",
|
|
signo, (intmax_t)job->pid));
|
|
KILL(job->pid, signo);
|
|
}
|
|
|
|
sigprocmask(SIG_SETMASK, &omask, NULL);
|
|
sigprocmask(SIG_SETMASK, &omask, NULL);
|
|
act.sa_handler = JobPassSig;
|
|
sigaction(signo, &act, NULL);
|
|
}
|
|
|
|
/**
|
|
* JobPrintCommand --
|
|
* Put out another command for the given job. If the command starts
|
|
* with an @ or a - we process it specially. In the former case,
|
|
* so long as the -s and -n flags weren't given to make, we stick
|
|
* a shell-specific echoOff command in the script. In the latter,
|
|
* we ignore errors for the entire job, unless the shell has error
|
|
* control.
|
|
* If the command is just "..." we take all future commands for this
|
|
* job to be commands to be executed once the entire graph has been
|
|
* made and return non-zero to signal that the end of the commands
|
|
* was reached. These commands are later attached to the postCommands
|
|
* node and executed by Job_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(char *cmd, Job *job)
|
|
{
|
|
Boolean noSpecials; /* true if we shouldn't worry about
|
|
* inserting special commands into
|
|
* the input stream. */
|
|
Boolean shutUp = FALSE; /* true if we put a no echo command
|
|
* into the command file */
|
|
Boolean errOff = FALSE; /* true if we turned error checking
|
|
* off before printing the command
|
|
* and need to turn it back on */
|
|
const char *cmdTemplate;/* Template to use when printing the command */
|
|
char *cmdStart; /* Start of expanded command */
|
|
LstNode *cmdNode; /* Node for replacing the command */
|
|
|
|
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, cmd));
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
#define DBPRINTF(fmt, arg) \
|
|
DEBUGF(JOB, (fmt, arg)); \
|
|
fprintf(job->cmdFILE, fmt, arg); \
|
|
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, cmd);
|
|
|
|
cmd = Buf_Peel(Var_Subst(cmd, job->node, FALSE));
|
|
cmdStart = cmd;
|
|
|
|
Lst_Replace(cmdNode, cmdStart);
|
|
|
|
cmdTemplate = "%s\n";
|
|
|
|
/*
|
|
* Check for leading @', -' or +'s to control echoing, error checking,
|
|
* and execution on -n.
|
|
*/
|
|
while (*cmd == '@' || *cmd == '-' || *cmd == '+') {
|
|
switch (*cmd) {
|
|
|
|
case '@':
|
|
shutUp = DEBUG(LOUD) ? FALSE : TRUE;
|
|
break;
|
|
|
|
case '-':
|
|
errOff = TRUE;
|
|
break;
|
|
|
|
case '+':
|
|
if (noSpecials) {
|
|
/*
|
|
* We're not actually exececuting anything...
|
|
* but this one needs to be - use compat mode
|
|
* just for it.
|
|
*/
|
|
Compat_RunCommand(cmd, job->node);
|
|
return (0);
|
|
}
|
|
break;
|
|
}
|
|
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);
|
|
}
|
|
|
|
/**
|
|
* JobClose --
|
|
* Called to close both input and output pipes when a job is finished.
|
|
*
|
|
* Side Effects:
|
|
* The file descriptors associated with the job are closed.
|
|
*/
|
|
static void
|
|
JobClose(Job *job)
|
|
{
|
|
|
|
if (usePipes) {
|
|
#if !defined(USE_KQUEUE)
|
|
FD_CLR(job->inPipe, &outputs);
|
|
#endif
|
|
if (job->outPipe != job->inPipe) {
|
|
close(job->outPipe);
|
|
}
|
|
JobDoOutput(job, TRUE);
|
|
close(job->inPipe);
|
|
} else {
|
|
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.
|
|
*
|
|
* 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 (makeErrors !=0), we set the aborting flag
|
|
* to ABORT_ERROR so no more jobs will be started.
|
|
*/
|
|
static void
|
|
JobFinish(Job *job, int *status)
|
|
{
|
|
Boolean done;
|
|
LstNode *ln;
|
|
|
|
if (WIFEXITED(*status)) {
|
|
int job_status = WEXITSTATUS(*status);
|
|
|
|
JobClose(job);
|
|
/*
|
|
* 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.
|
|
*/
|
|
if (job_status == 0) {
|
|
done = FALSE;
|
|
} else {
|
|
if (job->flags & JOB_IGNERR) {
|
|
done = TRUE;
|
|
} else {
|
|
/*
|
|
* 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...
|
|
*/
|
|
done = TRUE;
|
|
if (job->cmdFILE != NULL &&
|
|
job->cmdFILE != stdout) {
|
|
fclose(job->cmdFILE);
|
|
}
|
|
|
|
}
|
|
}
|
|
} else if (WIFSIGNALED(*status)) {
|
|
if (WTERMSIG(*status) == SIGCONT) {
|
|
/*
|
|
* No need to close things down or anything.
|
|
*/
|
|
done = FALSE;
|
|
} else {
|
|
/*
|
|
* If it exited non-zero and either we're
|
|
* doing things our way or we're not ignoring
|
|
* errors, the job is finished. Similarly, if
|
|
* the shell died because of a signal the job
|
|
* is also finished. In these cases, finish
|
|
* out the job's output before printing the
|
|
* exit status...
|
|
*/
|
|
JobClose(job);
|
|
if (job->cmdFILE != NULL &&
|
|
job->cmdFILE != stdout) {
|
|
fclose(job->cmdFILE);
|
|
}
|
|
done = TRUE;
|
|
}
|
|
} else {
|
|
/*
|
|
* No need to close things down or anything.
|
|
*/
|
|
done = FALSE;
|
|
}
|
|
|
|
if (WIFEXITED(*status)) {
|
|
if (done || 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;
|
|
}
|
|
|
|
DEBUGF(JOB, ("Process %jd exited.\n",
|
|
(intmax_t)job->pid));
|
|
|
|
if (WEXITSTATUS(*status) == 0) {
|
|
if (DEBUG(JOB)) {
|
|
if (usePipes && job->node != lastNode) {
|
|
MESSAGE(out, job->node);
|
|
lastNode = job->node;
|
|
}
|
|
fprintf(out,
|
|
"*** Completed successfully\n");
|
|
}
|
|
} else {
|
|
if (usePipes && job->node != lastNode) {
|
|
MESSAGE(out, job->node);
|
|
lastNode = job->node;
|
|
}
|
|
fprintf(out, "*** Error code %d%s\n",
|
|
WEXITSTATUS(*status),
|
|
(job->flags & JOB_IGNERR) ?
|
|
"(ignored)" : "");
|
|
|
|
if (job->flags & JOB_IGNERR) {
|
|
*status = 0;
|
|
}
|
|
}
|
|
|
|
fflush(out);
|
|
}
|
|
} else if (WIFSIGNALED(*status)) {
|
|
if (done || DEBUG(JOB) || (WTERMSIG(*status) == SIGCONT)) {
|
|
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 (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_RESTART)) {
|
|
if (usePipes && job->node != lastNode) {
|
|
MESSAGE(out, job->node);
|
|
lastNode = job->node;
|
|
}
|
|
fprintf(out, "*** Continued\n");
|
|
}
|
|
if (!(job->flags & JOB_CONTINUING)) {
|
|
DEBUGF(JOB, ("Warning: process %jd was not "
|
|
"continuing.\n", (intmax_t) job->pid));
|
|
}
|
|
job->flags &= ~JOB_CONTINUING;
|
|
TAILQ_INSERT_TAIL(&jobs, job, link);
|
|
nJobs += 1;
|
|
DEBUGF(JOB, ("Process %jd is continuing locally.\n",
|
|
(intmax_t) job->pid));
|
|
if (nJobs == maxJobs) {
|
|
jobFull = TRUE;
|
|
DEBUGF(JOB, ("Job queue is full.\n"));
|
|
}
|
|
fflush(out);
|
|
return;
|
|
|
|
} else {
|
|
if (usePipes && job->node != lastNode) {
|
|
MESSAGE(out, job->node);
|
|
lastNode = job->node;
|
|
}
|
|
fprintf(out,
|
|
"*** Signal %d\n", WTERMSIG(*status));
|
|
fflush(out);
|
|
}
|
|
}
|
|
} else {
|
|
/* STOPPED */
|
|
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;
|
|
}
|
|
|
|
DEBUGF(JOB, ("Process %jd stopped.\n", (intmax_t) job->pid));
|
|
if (usePipes && job->node != lastNode) {
|
|
MESSAGE(out, job->node);
|
|
lastNode = job->node;
|
|
}
|
|
fprintf(out, "*** Stopped -- signal %d\n", WSTOPSIG(*status));
|
|
job->flags |= JOB_RESUME;
|
|
TAILQ_INSERT_TAIL(&stoppedJobs, job, link);
|
|
fflush(out);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* 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_Succ(job->node->compat_command) != NULL) {
|
|
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;
|
|
default:
|
|
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.
|
|
*/
|
|
for (ln = job->tailCmds; ln != NULL; ln = LST_NEXT(ln)) {
|
|
Lst_AtEnd(&postCommands->commands,
|
|
Buf_Peel(
|
|
Var_Subst(Lst_Datum(ln), job->node, FALSE)));
|
|
}
|
|
|
|
job->node->made = MADE;
|
|
Make_Update(job->node);
|
|
free(job);
|
|
|
|
} else if (*status != 0) {
|
|
makeErrors++;
|
|
free(job);
|
|
}
|
|
|
|
JobRestartJobs();
|
|
|
|
/*
|
|
* Set aborting if any error.
|
|
*/
|
|
if (makeErrors && !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(makeErrors);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Job_Touch
|
|
* Touch the given target. Called by JobStart when the -t flag was
|
|
* given. Prints messages unless told to be silent.
|
|
*
|
|
* Side Effects:
|
|
* The data modification of the file is changed. In addition, if the
|
|
* file did not exist, it is created.
|
|
*/
|
|
void
|
|
Job_Touch(GNode *gn, Boolean silent)
|
|
{
|
|
int streamID; /* ID of stream opened to do the touch */
|
|
struct utimbuf times; /* Times for utime() call */
|
|
|
|
if (gn->type & (OP_JOIN | OP_USE | OP_EXEC | OP_OPTIONAL)) {
|
|
/*
|
|
* .JOIN, .USE, .ZEROTIME and .OPTIONAL targets are "virtual"
|
|
* targets and, as such, shouldn't really be created.
|
|
*/
|
|
return;
|
|
}
|
|
|
|
if (!silent) {
|
|
fprintf(stdout, "touch %s\n", gn->name);
|
|
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) {
|
|
lseek(streamID, (off_t)0, SEEK_SET);
|
|
write(streamID, &c, 1);
|
|
}
|
|
|
|
close(streamID);
|
|
} else {
|
|
fprintf(stdout, "*** couldn't touch %s: %s",
|
|
file, strerror(errno));
|
|
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(GNode *gn, void (*abortProc)(const char *, ...))
|
|
{
|
|
|
|
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)) {
|
|
/*
|
|
* 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.
|
|
*/
|
|
static const char msg[] =
|
|
"make: don't know how to make";
|
|
|
|
if (gn->type & OP_OPTIONAL) {
|
|
fprintf(stdout, "%s %s(ignored)\n",
|
|
msg, gn->name);
|
|
fflush(stdout);
|
|
} else if (keepgoing) {
|
|
fprintf(stdout, "%s %s(continuing)\n",
|
|
msg, gn->name);
|
|
fflush(stdout);
|
|
return (FALSE);
|
|
} else {
|
|
#ifndef WITHOUT_OLD_JOKE
|
|
if (strcmp(gn->name,"love") == 0)
|
|
(*abortProc)("Not war.");
|
|
else
|
|
#endif
|
|
(*abortProc)("%s %s. Stop",
|
|
msg, gn->name);
|
|
return (FALSE);
|
|
}
|
|
}
|
|
}
|
|
return (TRUE);
|
|
}
|
|
|
|
/**
|
|
* JobExec
|
|
* Execute the shell for the given job. Called from JobStart and
|
|
* JobRestart.
|
|
*
|
|
* Side Effects:
|
|
* A shell is executed, outputs is altered and the Job structure added
|
|
* to the job table.
|
|
*/
|
|
static void
|
|
JobExec(Job *job, char **argv)
|
|
{
|
|
ProcStuff ps;
|
|
|
|
if (DEBUG(JOB)) {
|
|
int i;
|
|
|
|
DEBUGF(JOB, ("Running %s\n", job->node->name));
|
|
DEBUGF(JOB, ("\tCommand: "));
|
|
for (i = 0; argv[i] != NULL; i++) {
|
|
DEBUGF(JOB, ("%s ", argv[i]));
|
|
}
|
|
DEBUGF(JOB, ("\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)) {
|
|
MESSAGE(stdout, job->node);
|
|
lastNode = job->node;
|
|
}
|
|
|
|
ps.in = FILENO(job->cmdFILE);
|
|
if (usePipes) {
|
|
/*
|
|
* Set up the child's output to be routed through the
|
|
* pipe we've created for it.
|
|
*/
|
|
ps.out = job->outPipe;
|
|
} else {
|
|
/*
|
|
* We're capturing output in a file, so we duplicate
|
|
* the descriptor to the temporary file into the
|
|
* standard output.
|
|
*/
|
|
ps.out = job->outFd;
|
|
}
|
|
ps.err = STDERR_FILENO;
|
|
|
|
ps.merge_errors = 1;
|
|
ps.pgroup = 1;
|
|
ps.searchpath = 0;
|
|
|
|
ps.argv = argv;
|
|
ps.argv_free = 0;
|
|
|
|
/*
|
|
* Fork. Warning since we are doing vfork() instead of fork(),
|
|
* do not allocate memory in the child process!
|
|
*/
|
|
if ((ps.child_pid = vfork()) == -1) {
|
|
Punt("Cannot fork");
|
|
|
|
|
|
} else if (ps.child_pid == 0) {
|
|
/*
|
|
* Child
|
|
*/
|
|
if (fifoFd >= 0)
|
|
close(fifoFd);
|
|
|
|
Proc_Exec(&ps);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
/*
|
|
* Parent
|
|
*/
|
|
job->pid = ps.child_pid;
|
|
|
|
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.
|
|
*/
|
|
#ifdef USE_KQUEUE
|
|
struct kevent kev[2];
|
|
#endif
|
|
job->curPos = 0;
|
|
|
|
#if defined(USE_KQUEUE)
|
|
EV_SET(&kev[0], job->inPipe, EVFILT_READ, EV_ADD, 0, 0, job);
|
|
EV_SET(&kev[1], job->pid, EVFILT_PROC,
|
|
EV_ADD | EV_ONESHOT, NOTE_EXIT, 0, NULL);
|
|
if (kevent(kqfd, kev, 2, NULL, 0, NULL) != 0) {
|
|
/*
|
|
* kevent() will fail if the job is already
|
|
* finished
|
|
*/
|
|
if (errno != EINTR && errno != EBADF && errno != ESRCH)
|
|
Punt("kevent: %s", strerror(errno));
|
|
}
|
|
#else
|
|
FD_SET(job->inPipe, &outputs);
|
|
#endif /* USE_KQUEUE */
|
|
}
|
|
|
|
if (job->cmdFILE != NULL && job->cmdFILE != stdout) {
|
|
fclose(job->cmdFILE);
|
|
job->cmdFILE = NULL;
|
|
}
|
|
|
|
/*
|
|
* Now the job is actually running, add it to the table.
|
|
*/
|
|
nJobs += 1;
|
|
TAILQ_INSERT_TAIL(&jobs, job, link);
|
|
if (nJobs == maxJobs) {
|
|
jobFull = TRUE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* JobMakeArgv
|
|
* Create the argv needed to execute the shell for a given job.
|
|
*/
|
|
static void
|
|
JobMakeArgv(Job *job, char **argv)
|
|
{
|
|
int argc;
|
|
static char args[10]; /* For merged arguments */
|
|
|
|
argv[0] = commandShell->name;
|
|
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.
|
|
*/
|
|
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. The job must be neither
|
|
* on the jobs nor on the stoppedJobs list.
|
|
*
|
|
* Side Effects:
|
|
* jobFull will be set if the job couldn't be run.
|
|
*/
|
|
static void
|
|
JobRestart(Job *job)
|
|
{
|
|
|
|
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);
|
|
|
|
DEBUGF(JOB, ("Restarting %s...", job->node->name));
|
|
if (nJobs >= maxJobs && !(job->flags & JOB_SPECIAL)) {
|
|
/*
|
|
* Not allowed to run -- put it back on the hold
|
|
* queue and mark the table full
|
|
*/
|
|
DEBUGF(JOB, ("holding\n"));
|
|
TAILQ_INSERT_HEAD(&stoppedJobs, job, link);
|
|
jobFull = TRUE;
|
|
DEBUGF(JOB, ("Job queue is full.\n"));
|
|
return;
|
|
} else {
|
|
/*
|
|
* Job may be run locally.
|
|
*/
|
|
DEBUGF(JOB, ("running locally\n"));
|
|
}
|
|
JobExec(job, argv);
|
|
|
|
} else {
|
|
/*
|
|
* The job has stopped and needs to be restarted.
|
|
* Why it stopped, we don't know...
|
|
*/
|
|
DEBUGF(JOB, ("Resuming %s...", job->node->name));
|
|
if ((nJobs < maxJobs || ((job->flags & JOB_SPECIAL) &&
|
|
maxJobs == 0)) && nJobs != maxJobs) {
|
|
/*
|
|
* If we haven't reached the concurrency limit already
|
|
* (or the job must be run and maxJobs is 0), it's ok
|
|
* to resume it.
|
|
*/
|
|
Boolean error;
|
|
int status;
|
|
|
|
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 = 0;
|
|
W_SETTERMSIG(&status, SIGCONT);
|
|
JobFinish(job, &status);
|
|
|
|
job->flags &= ~(JOB_RESUME|JOB_CONTINUING);
|
|
DEBUGF(JOB, ("done\n"));
|
|
} 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.
|
|
*/
|
|
DEBUGF(JOB, ("table full\n"));
|
|
TAILQ_INSERT_HEAD(&stoppedJobs, job, link);
|
|
jobFull = TRUE;
|
|
DEBUGF(JOB, ("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(GNode *gn, int flags, Job *previous)
|
|
{
|
|
Job *job; /* new job descriptor */
|
|
char *argv[4]; /* Argument vector to shell */
|
|
Boolean cmdsOK; /* true if the nodes commands were all right */
|
|
Boolean noExec; /* Set true if we decide not to run the job */
|
|
int tfd; /* File descriptor for temp file */
|
|
LstNode *ln;
|
|
char tfile[PATH_MAX];
|
|
const char *tdir;
|
|
|
|
if (interrupted) {
|
|
JobPassSig(interrupted);
|
|
return (JOB_ERROR);
|
|
}
|
|
if (previous != NULL) {
|
|
previous->flags &= ~(JOB_FIRST | JOB_IGNERR | JOB_SILENT);
|
|
job = previous;
|
|
} else {
|
|
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 ((tdir = getenv("TMPDIR")) == NULL)
|
|
tdir = TMPDIR;
|
|
|
|
/*
|
|
* 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();
|
|
}
|
|
|
|
snprintf(tfile, sizeof(tfile), "%s/%s", tdir, 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);
|
|
}
|
|
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)
|
|
gn->compat_command = Lst_First(&gn->commands);
|
|
else
|
|
gn->compat_command =
|
|
Lst_Succ(gn->compat_command);
|
|
|
|
if (gn->compat_command == NULL ||
|
|
JobPrintCommand(Lst_Datum(gn->compat_command), job))
|
|
noExec = TRUE;
|
|
|
|
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(ln, &gn->commands) {
|
|
if (JobPrintCommand(Lst_Datum(ln), job))
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* 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(ln, &gn->commands) {
|
|
if (JobPrintCommand(Lst_Datum(ln), job))
|
|
break;
|
|
}
|
|
}
|
|
/*
|
|
* 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)
|
|
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) {
|
|
for (ln = job->tailCmds; ln != NULL;
|
|
ln = LST_NEXT(ln)) {
|
|
Lst_AtEnd(&postCommands->commands,
|
|
Buf_Peel(Var_Subst(Lst_Datum(ln),
|
|
job->node, FALSE)));
|
|
}
|
|
job->node->made = MADE;
|
|
Make_Update(job->node);
|
|
}
|
|
free(job);
|
|
return(JOB_FINISHED);
|
|
} else {
|
|
free(job);
|
|
return(JOB_ERROR);
|
|
}
|
|
} else {
|
|
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];
|
|
fcntl(job->inPipe, F_SETFD, 1);
|
|
fcntl(job->outPipe, F_SETFD, 1);
|
|
} else {
|
|
fprintf(stdout, "Remaking `%s'\n", gn->name);
|
|
fflush(stdout);
|
|
if ((tdir = getenv("TMPDIR")) == NULL)
|
|
tdir = TMPDIR;
|
|
snprintf(job->outFile, sizeof(job->outFile), "%s/%s",
|
|
tdir, TMPPAT);
|
|
if ((job->outFd = mkstemp(job->outFile)) == -1)
|
|
Punt("cannot create temp file: %s",
|
|
strerror(errno));
|
|
fcntl(job->outFd, F_SETFD, 1);
|
|
}
|
|
}
|
|
|
|
if (nJobs >= maxJobs && !(job->flags & JOB_SPECIAL) && maxJobs != 0) {
|
|
/*
|
|
* We've hit the limit of concurrency, so put the job on hold
|
|
* until some other job finishes. Note that the special jobs
|
|
* (.BEGIN, .INTERRUPT and .END) may be run even when the
|
|
* limit has been reached (e.g. when maxJobs == 0).
|
|
*/
|
|
jobFull = TRUE;
|
|
|
|
DEBUGF(JOB, ("Can only run job locally.\n"));
|
|
job->flags |= JOB_RESTART;
|
|
TAILQ_INSERT_TAIL(&stoppedJobs, job, link);
|
|
} else {
|
|
if (nJobs >= maxJobs) {
|
|
/*
|
|
* If we're running this job as a special case
|
|
* (see above), at least say the table is full.
|
|
*/
|
|
jobFull = TRUE;
|
|
DEBUGF(JOB, ("Local job queue is full.\n"));
|
|
}
|
|
JobExec(job, argv);
|
|
}
|
|
return (JOB_RUNNING);
|
|
}
|
|
|
|
static char *
|
|
JobOutput(Job *job, char *cp, char *endp, int msg)
|
|
{
|
|
char *ecp;
|
|
|
|
if (commandShell->noPrint) {
|
|
ecp = strstr(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.
|
|
*/
|
|
fprintf(stdout, "%s", cp);
|
|
fflush(stdout);
|
|
}
|
|
cp = ecp + strlen(commandShell->noPrint);
|
|
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 = strstr(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.
|
|
*
|
|
* Side Effects:
|
|
* curPos may be shifted as may the contents of outBuf.
|
|
*/
|
|
static void
|
|
JobDoOutput(Job *job, Boolean finish)
|
|
{
|
|
Boolean gotNL = FALSE; /* true if got a newline */
|
|
Boolean fbuf; /* true if our buffer filled up */
|
|
int nr; /* number of bytes read */
|
|
int i; /* auxiliary index into outBuf */
|
|
int max; /* limit for i (end of current data) */
|
|
int nRead; /* (Temporary) number of bytes read */
|
|
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);
|
|
/*
|
|
* Check for interrupt here too, because the above read may
|
|
* block when the child process is stopped. In this case the
|
|
* interrupt will unblock it (we don't use SA_RESTART).
|
|
*/
|
|
if (interrupted)
|
|
JobPassSig(interrupted);
|
|
|
|
if (nRead < 0) {
|
|
DEBUGF(JOB, ("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 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;
|
|
}
|
|
fprintf(stdout, "%s%s", cp,
|
|
gotNL ? "\n" : "");
|
|
fflush(stdout);
|
|
}
|
|
}
|
|
if (i < max - 1) {
|
|
/* shift the remaining characters down */
|
|
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) {
|
|
fprintf(stdout, "Results of making %s:\n",
|
|
job->node->name);
|
|
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 buffer. This time,
|
|
* though, we know there's no newline at the
|
|
* end, so we add one of our own free will.
|
|
*/
|
|
fprintf(stdout, "%s", cp);
|
|
fflush(stdout);
|
|
if (endp != oendp) {
|
|
fprintf(stdout, "\n");
|
|
fflush(stdout);
|
|
}
|
|
}
|
|
fclose(oFILE);
|
|
eunlink(job->outFile);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Job_CatchChildren
|
|
* Handle the exit of a child. Called from Make_Make.
|
|
*
|
|
* 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(Boolean block)
|
|
{
|
|
pid_t pid; /* pid of dead child */
|
|
Job *job; /* job descriptor for dead child */
|
|
int status; /* Exit/termination status */
|
|
|
|
/*
|
|
* Don't even bother if we know there's no one around.
|
|
*/
|
|
if (nJobs == 0) {
|
|
return;
|
|
}
|
|
|
|
for (;;) {
|
|
pid = waitpid((pid_t)-1, &status,
|
|
(block ? 0 : WNOHANG) | WUNTRACED);
|
|
if (pid <= 0)
|
|
break;
|
|
|
|
DEBUGF(JOB, ("Process %jd exited or stopped.\n",
|
|
(intmax_t)pid));
|
|
|
|
TAILQ_FOREACH(job, &jobs, link) {
|
|
if (job->pid == pid)
|
|
break;
|
|
}
|
|
|
|
if (job == NULL) {
|
|
if (WIFSIGNALED(status) &&
|
|
(WTERMSIG(status) == SIGCONT)) {
|
|
TAILQ_FOREACH(job, &jobs, link) {
|
|
if (job->pid == pid)
|
|
break;
|
|
}
|
|
if (job == NULL) {
|
|
Error("Resumed child (%jd) "
|
|
"not in table", (intmax_t)pid);
|
|
continue;
|
|
}
|
|
TAILQ_REMOVE(&stoppedJobs, job, link);
|
|
} else {
|
|
Error("Child (%jd) not in table?",
|
|
(intmax_t)pid);
|
|
continue;
|
|
}
|
|
} else {
|
|
TAILQ_REMOVE(&jobs, job, link);
|
|
nJobs -= 1;
|
|
if (fifoFd >= 0 && maxJobs > 1) {
|
|
write(fifoFd, "+", 1);
|
|
maxJobs--;
|
|
if (nJobs >= maxJobs)
|
|
jobFull = TRUE;
|
|
else
|
|
jobFull = FALSE;
|
|
} else {
|
|
DEBUGF(JOB, ("Job queue is no longer full.\n"));
|
|
jobFull = FALSE;
|
|
}
|
|
}
|
|
|
|
JobFinish(job, &status);
|
|
}
|
|
if (interrupted)
|
|
JobPassSig(interrupted);
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* Side Effects:
|
|
* Output is read from pipes if we're piping.
|
|
* -----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
#ifdef USE_KQUEUE
|
|
Job_CatchOutput(int flag __unused)
|
|
#else
|
|
Job_CatchOutput(int flag)
|
|
#endif
|
|
{
|
|
int nfds;
|
|
#ifdef USE_KQUEUE
|
|
#define KEV_SIZE 4
|
|
struct kevent kev[KEV_SIZE];
|
|
int i;
|
|
#else
|
|
struct timeval timeout;
|
|
fd_set readfds;
|
|
Job *job;
|
|
#endif
|
|
|
|
fflush(stdout);
|
|
|
|
if (usePipes) {
|
|
#ifdef USE_KQUEUE
|
|
if ((nfds = kevent(kqfd, NULL, 0, kev, KEV_SIZE, NULL)) == -1) {
|
|
if (errno != EINTR)
|
|
Punt("kevent: %s", strerror(errno));
|
|
if (interrupted)
|
|
JobPassSig(interrupted);
|
|
} else {
|
|
for (i = 0; i < nfds; i++) {
|
|
if (kev[i].flags & EV_ERROR) {
|
|
warnc(kev[i].data, "kevent");
|
|
continue;
|
|
}
|
|
switch (kev[i].filter) {
|
|
case EVFILT_READ:
|
|
JobDoOutput(kev[i].udata, FALSE);
|
|
break;
|
|
case EVFILT_PROC:
|
|
/*
|
|
* Just wake up and let
|
|
* Job_CatchChildren() collect the
|
|
* terminated job.
|
|
*/
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
readfds = outputs;
|
|
timeout.tv_sec = SEL_SEC;
|
|
timeout.tv_usec = SEL_USEC;
|
|
if (flag && jobFull && fifoFd >= 0)
|
|
FD_SET(fifoFd, &readfds);
|
|
|
|
nfds = select(FD_SETSIZE, &readfds, (fd_set *)NULL,
|
|
(fd_set *)NULL, &timeout);
|
|
if (nfds <= 0) {
|
|
if (interrupted)
|
|
JobPassSig(interrupted);
|
|
return;
|
|
}
|
|
if (fifoFd >= 0 && FD_ISSET(fifoFd, &readfds)) {
|
|
if (--nfds <= 0)
|
|
return;
|
|
}
|
|
job = TAILQ_FIRST(&jobs);
|
|
while (nfds != 0 && job != NULL) {
|
|
if (FD_ISSET(job->inPipe, &readfds)) {
|
|
JobDoOutput(job, FALSE);
|
|
nfds--;
|
|
}
|
|
job = TAILQ_NEXT(job, link);
|
|
}
|
|
#endif /* !USE_KQUEUE */
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Job_Make
|
|
* Start the creation of a target. Basically a front-end for
|
|
* JobStart used by the Make module.
|
|
*
|
|
* Side Effects:
|
|
* Another job is started.
|
|
*/
|
|
void
|
|
Job_Make(GNode *gn)
|
|
{
|
|
|
|
JobStart(gn, 0, NULL);
|
|
}
|
|
|
|
void
|
|
Job_SetPrefix(void)
|
|
{
|
|
|
|
if (targPrefix) {
|
|
free(targPrefix);
|
|
} else if (!Var_Exists(MAKE_JOB_PREFIX, VAR_GLOBAL)) {
|
|
Var_SetGlobal(MAKE_JOB_PREFIX, "---");
|
|
}
|
|
targPrefix = Var_Subst("${" MAKE_JOB_PREFIX "}", VAR_GLOBAL, 0)->buf;
|
|
}
|
|
|
|
/**
|
|
* Job_Init
|
|
* Initialize the process module, given a maximum number of jobs.
|
|
*
|
|
* Side Effects:
|
|
* lists and counters are initialized
|
|
*/
|
|
void
|
|
Job_Init(int maxproc)
|
|
{
|
|
GNode *begin; /* node for commands to do at the very start */
|
|
const char *env;
|
|
struct sigaction sa;
|
|
|
|
fifoFd = -1;
|
|
env = getenv("MAKE_JOBS_FIFO");
|
|
|
|
if (env == NULL && maxproc > 1) {
|
|
/*
|
|
* We did not find the environment variable so we are the
|
|
* leader. Create the fifo, open it, write one char per
|
|
* allowed job into the pipe.
|
|
*/
|
|
fifoFd = mkfifotemp(fifoName);
|
|
if (fifoFd < 0) {
|
|
env = NULL;
|
|
} else {
|
|
fifoMaster = 1;
|
|
fcntl(fifoFd, F_SETFL, O_NONBLOCK);
|
|
env = fifoName;
|
|
setenv("MAKE_JOBS_FIFO", env, 1);
|
|
while (maxproc-- > 0) {
|
|
write(fifoFd, "+", 1);
|
|
}
|
|
/* The master make does not get a magic token */
|
|
jobFull = TRUE;
|
|
maxJobs = 0;
|
|
}
|
|
|
|
} else if (env != NULL) {
|
|
/*
|
|
* We had the environment variable so we are a slave.
|
|
* Open fifo and give ourselves a magic token which represents
|
|
* the token our parent make has grabbed to start his make
|
|
* process. Otherwise the sub-makes would gobble up tokens and
|
|
* the proper number of tokens to specify to -j would depend
|
|
* on the depth of the tree and the order of execution.
|
|
*/
|
|
fifoFd = open(env, O_RDWR, 0);
|
|
if (fifoFd >= 0) {
|
|
fcntl(fifoFd, F_SETFL, O_NONBLOCK);
|
|
maxJobs = 1;
|
|
jobFull = FALSE;
|
|
}
|
|
}
|
|
if (fifoFd < 0) {
|
|
maxJobs = maxproc;
|
|
jobFull = FALSE;
|
|
} else {
|
|
}
|
|
nJobs = 0;
|
|
|
|
aborting = 0;
|
|
makeErrors = 0;
|
|
|
|
lastNode = NULL;
|
|
if ((maxJobs == 1 && fifoFd < 0) || !beVerbose || is_posix || beQuiet) {
|
|
/*
|
|
* If only one job can run at a time, there's no need for a
|
|
* banner, no is there?
|
|
*/
|
|
targFmt = "";
|
|
} else {
|
|
targFmt = TARG_FMT;
|
|
}
|
|
|
|
/*
|
|
* Catch the four signals that POSIX specifies if they aren't ignored.
|
|
* JobCatchSignal will just set global variables and hope someone
|
|
* else is going to handle the interrupt.
|
|
*/
|
|
sa.sa_handler = JobCatchSig;
|
|
sigemptyset(&sa.sa_mask);
|
|
sa.sa_flags = 0;
|
|
|
|
if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
|
|
sigaction(SIGINT, &sa, NULL);
|
|
}
|
|
if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
|
|
sigaction(SIGHUP, &sa, NULL);
|
|
}
|
|
if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
|
|
sigaction(SIGQUIT, &sa, NULL);
|
|
}
|
|
if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
|
|
sigaction(SIGTERM, &sa, NULL);
|
|
}
|
|
/*
|
|
* 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(USE_PGRP)
|
|
if (signal(SIGTSTP, SIG_IGN) != SIG_IGN) {
|
|
sigaction(SIGTSTP, &sa, NULL);
|
|
}
|
|
if (signal(SIGTTOU, SIG_IGN) != SIG_IGN) {
|
|
sigaction(SIGTTOU, &sa, NULL);
|
|
}
|
|
if (signal(SIGTTIN, SIG_IGN) != SIG_IGN) {
|
|
sigaction(SIGTTIN, &sa, NULL);
|
|
}
|
|
if (signal(SIGWINCH, SIG_IGN) != SIG_IGN) {
|
|
sigaction(SIGWINCH, &sa, NULL);
|
|
}
|
|
#endif
|
|
|
|
#ifdef USE_KQUEUE
|
|
if ((kqfd = kqueue()) == -1) {
|
|
Punt("kqueue: %s", strerror(errno));
|
|
}
|
|
#endif
|
|
|
|
begin = Targ_FindNode(".BEGIN", TARG_NOCREATE);
|
|
|
|
if (begin != NULL) {
|
|
JobStart(begin, JOB_SPECIAL, (Job *)NULL);
|
|
while (nJobs) {
|
|
Job_CatchOutput(0);
|
|
Job_CatchChildren(!usePipes);
|
|
}
|
|
}
|
|
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
|
|
*/
|
|
Boolean
|
|
Job_Full(void)
|
|
{
|
|
char c;
|
|
int i;
|
|
|
|
if (aborting)
|
|
return (aborting);
|
|
if (fifoFd >= 0 && jobFull) {
|
|
i = read(fifoFd, &c, 1);
|
|
if (i > 0) {
|
|
maxJobs++;
|
|
jobFull = FALSE;
|
|
}
|
|
}
|
|
return (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.
|
|
*/
|
|
Boolean
|
|
Job_Empty(void)
|
|
{
|
|
if (nJobs == 0) {
|
|
if (!TAILQ_EMPTY(&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);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* JobInterrupt
|
|
* Handle the receipt of an interrupt.
|
|
*
|
|
* Side Effects:
|
|
* All children are killed. Another job will be started if the
|
|
* .INTERRUPT target was given.
|
|
*/
|
|
static void
|
|
JobInterrupt(int runINTERRUPT, int signo)
|
|
{
|
|
Job *job; /* job descriptor in that element */
|
|
GNode *interrupt; /* the node describing the .INTERRUPT target */
|
|
|
|
aborting = ABORT_INTERRUPT;
|
|
|
|
TAILQ_FOREACH(job, &jobs, link) {
|
|
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);
|
|
}
|
|
}
|
|
if (job->pid) {
|
|
DEBUGF(JOB, ("JobInterrupt passing signal to child "
|
|
"%jd.\n", (intmax_t)job->pid));
|
|
KILL(job->pid, signo);
|
|
}
|
|
}
|
|
|
|
if (runINTERRUPT && !touchFlag) {
|
|
/*
|
|
* clear the interrupted flag because we would get an
|
|
* infinite loop otherwise.
|
|
*/
|
|
interrupted = 0;
|
|
|
|
interrupt = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
|
|
if (interrupt != NULL) {
|
|
ignoreErrors = FALSE;
|
|
|
|
JobStart(interrupt, JOB_IGNDOTS, (Job *)NULL);
|
|
while (nJobs) {
|
|
Job_CatchOutput(0);
|
|
Job_CatchChildren(!usePipes);
|
|
}
|
|
}
|
|
}
|
|
if (fifoMaster)
|
|
unlink(fifoName);
|
|
}
|
|
|
|
/**
|
|
* Job_Finish
|
|
* Do final processing such as the running of the commands
|
|
* attached to the .END target.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*/
|
|
void
|
|
Job_Finish(void)
|
|
{
|
|
|
|
if (postCommands != NULL && !Lst_IsEmpty(&postCommands->commands)) {
|
|
if (makeErrors) {
|
|
Error("Errors reported so .END ignored");
|
|
} else {
|
|
JobStart(postCommands, JOB_SPECIAL | JOB_IGNDOTS, NULL);
|
|
|
|
while (nJobs) {
|
|
Job_CatchOutput(0);
|
|
Job_CatchChildren(!usePipes);
|
|
}
|
|
}
|
|
}
|
|
if (fifoFd >= 0) {
|
|
close(fifoFd);
|
|
fifoFd = -1;
|
|
if (fifoMaster)
|
|
unlink(fifoName);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Job_Wait
|
|
* Waits for all running jobs to finish and returns. Sets 'aborting'
|
|
* to ABORT_WAIT to prevent other jobs from starting.
|
|
*
|
|
* Side Effects:
|
|
* Currently running jobs finish.
|
|
*/
|
|
void
|
|
Job_Wait(void)
|
|
{
|
|
|
|
aborting = ABORT_WAIT;
|
|
while (nJobs != 0) {
|
|
Job_CatchOutput(0);
|
|
Job_CatchChildren(!usePipes);
|
|
}
|
|
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.
|
|
*
|
|
* Side Effects:
|
|
* All children are killed, not just the firstborn
|
|
*/
|
|
void
|
|
Job_AbortAll(void)
|
|
{
|
|
Job *job; /* the job descriptor in that element */
|
|
int foo;
|
|
|
|
aborting = ABORT_ERROR;
|
|
|
|
if (nJobs) {
|
|
TAILQ_FOREACH(job, &jobs, link) {
|
|
/*
|
|
* kill the child process with increasingly drastic
|
|
* signals to make darn sure it's dead.
|
|
*/
|
|
KILL(job->pid, SIGINT);
|
|
KILL(job->pid, SIGKILL);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Catch as many children as want to report in at first, then give up
|
|
*/
|
|
while (waitpid((pid_t)-1, &foo, WNOHANG) > 0)
|
|
;
|
|
}
|
|
|
|
/**
|
|
* 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!
|
|
*
|
|
* Side Effects:
|
|
* Resumes(and possibly migrates) jobs.
|
|
*/
|
|
static void
|
|
JobRestartJobs(void)
|
|
{
|
|
Job *job;
|
|
|
|
while (!jobFull && (job = TAILQ_FIRST(&stoppedJobs)) != NULL) {
|
|
DEBUGF(JOB, ("Job queue is not full. "
|
|
"Restarting a stopped job.\n"));
|
|
TAILQ_REMOVE(&stoppedJobs, job, link);
|
|
JobRestart(job);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Cmd_Exec
|
|
* Execute the command in cmd, and return the output of that command
|
|
* in a string.
|
|
*
|
|
* Results:
|
|
* A string containing the output of the command, or the empty string
|
|
* If error is not NULL, it contains the reason for the command failure
|
|
* Any output sent to stderr in the child process is passed to stderr,
|
|
* and not captured in the string.
|
|
*
|
|
* Side Effects:
|
|
* The string must be freed by the caller.
|
|
*/
|
|
Buffer *
|
|
Cmd_Exec(const char *cmd, const char **error)
|
|
{
|
|
int fds[2]; /* Pipe streams */
|
|
int status; /* command exit status */
|
|
Buffer *buf; /* buffer to store the result */
|
|
ssize_t rcnt;
|
|
ProcStuff ps;
|
|
|
|
*error = NULL;
|
|
buf = Buf_Init(0);
|
|
|
|
/*
|
|
* Open a pipe for fetching its output
|
|
*/
|
|
if (pipe(fds) == -1) {
|
|
*error = "Couldn't create pipe for \"%s\"";
|
|
return (buf);
|
|
}
|
|
|
|
/* Set close-on-exec on read side of pipe. */
|
|
fcntl(fds[0], F_SETFD, fcntl(fds[0], F_GETFD) | FD_CLOEXEC);
|
|
|
|
ps.in = STDIN_FILENO;
|
|
ps.out = fds[1];
|
|
ps.err = STDERR_FILENO;
|
|
|
|
ps.merge_errors = 0;
|
|
ps.pgroup = 0;
|
|
ps.searchpath = 0;
|
|
|
|
/* Set up arguments for shell */
|
|
ps.argv = emalloc(4 * sizeof(char *));
|
|
ps.argv[0] = strdup(commandShell->name);
|
|
ps.argv[1] = strdup("-c");
|
|
ps.argv[2] = strdup(cmd);
|
|
ps.argv[3] = NULL;
|
|
ps.argv_free = 1;
|
|
|
|
/*
|
|
* Fork. Warning since we are doing vfork() instead of fork(),
|
|
* do not allocate memory in the child process!
|
|
*/
|
|
if ((ps.child_pid = vfork()) == -1) {
|
|
*error = "Couldn't exec \"%s\"";
|
|
return (buf);
|
|
|
|
} else if (ps.child_pid == 0) {
|
|
/*
|
|
* Child
|
|
*/
|
|
Proc_Exec(&ps);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
free(ps.argv[2]);
|
|
free(ps.argv[1]);
|
|
free(ps.argv[0]);
|
|
free(ps.argv);
|
|
|
|
close(fds[1]); /* No need for the writing half of the pipe. */
|
|
|
|
do {
|
|
char result[BUFSIZ];
|
|
|
|
rcnt = read(fds[0], result, sizeof(result));
|
|
if (rcnt != -1)
|
|
Buf_AddBytes(buf, (size_t)rcnt, (Byte *)result);
|
|
} while (rcnt > 0 || (rcnt == -1 && errno == EINTR));
|
|
|
|
if (rcnt == -1)
|
|
*error = "Error reading shell's output for \"%s\"";
|
|
|
|
/*
|
|
* Close the input side of the pipe.
|
|
*/
|
|
close(fds[0]);
|
|
|
|
status = ProcWait(&ps);
|
|
|
|
if (status)
|
|
*error = "\"%s\" returned non-zero status";
|
|
|
|
Buf_StripNewlines(buf);
|
|
|
|
return (buf);
|
|
}
|
|
|
|
|
|
/*
|
|
* Interrupt handler - set flag and defer handling to the main code
|
|
*/
|
|
static void
|
|
CompatCatchSig(int signo)
|
|
{
|
|
|
|
interrupted = signo;
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* CompatInterrupt --
|
|
* Interrupt the creation of the current target and remove it if
|
|
* it ain't precious.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* The target is removed and the process exits. If .INTERRUPT exists,
|
|
* its commands are run first WITH INTERRUPTS IGNORED..
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
CompatInterrupt(int signo)
|
|
{
|
|
GNode *gn;
|
|
sigset_t nmask, omask;
|
|
LstNode *ln;
|
|
|
|
sigemptyset(&nmask);
|
|
sigaddset(&nmask, SIGINT);
|
|
sigaddset(&nmask, SIGTERM);
|
|
sigaddset(&nmask, SIGHUP);
|
|
sigaddset(&nmask, SIGQUIT);
|
|
sigprocmask(SIG_SETMASK, &nmask, &omask);
|
|
|
|
/* prevent recursion in evaluation of .INTERRUPT */
|
|
interrupted = 0;
|
|
|
|
if (curTarg != NULL && !Targ_Precious(curTarg)) {
|
|
const char *file = Var_Value(TARGET, curTarg);
|
|
|
|
if (!noExecute && eunlink(file) != -1) {
|
|
printf("*** %s removed\n", file);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Run .INTERRUPT only if hit with interrupt signal
|
|
*/
|
|
if (signo == SIGINT) {
|
|
gn = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
|
|
if (gn != NULL) {
|
|
LST_FOREACH(ln, &gn->commands) {
|
|
if (Compat_RunCommand(Lst_Datum(ln), gn))
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
sigprocmask(SIG_SETMASK, &omask, NULL);
|
|
|
|
if (signo == SIGQUIT)
|
|
exit(signo);
|
|
signal(signo, SIG_DFL);
|
|
kill(getpid(), signo);
|
|
}
|
|
|
|
/**
|
|
* shellneed
|
|
*
|
|
* Results:
|
|
* Returns NULL if a specified line must be executed by the shell,
|
|
* and an argument vector if it can be run via execvp().
|
|
*
|
|
* Side Effects:
|
|
* Uses brk_string so destroys the contents of argv.
|
|
*/
|
|
static char **
|
|
shellneed(ArgArray *aa, char *cmd)
|
|
{
|
|
char **p;
|
|
int ret;
|
|
|
|
if (commandShell->meta == NULL || commandShell->builtins.argc <= 1)
|
|
/* use shell */
|
|
return (NULL);
|
|
|
|
if (strpbrk(cmd, commandShell->meta) != NULL)
|
|
return (NULL);
|
|
|
|
/*
|
|
* Break the command into words to form an argument
|
|
* vector we can execute.
|
|
*/
|
|
brk_string(aa, cmd, TRUE);
|
|
for (p = commandShell->builtins.argv + 1; *p != 0; p++) {
|
|
if ((ret = strcmp(aa->argv[1], *p)) == 0) {
|
|
/* found - use shell */
|
|
ArgArray_Done(aa);
|
|
return (NULL);
|
|
}
|
|
if (ret < 0) {
|
|
/* not found */
|
|
break;
|
|
}
|
|
}
|
|
return (aa->argv + 1);
|
|
}
|
|
|
|
/**
|
|
* Execute the next command for a target. If the command returns an
|
|
* error, the node's made field is set to ERROR and creation stops.
|
|
* The node from which the command came is also given. This is used
|
|
* to execute the commands in compat mode and when executing commands
|
|
* with the '+' flag in non-compat mode. In these modes each command
|
|
* line should be executed by its own shell. We do some optimisation here:
|
|
* if the shell description defines both a string of meta characters and
|
|
* a list of builtins and the command line neither contains a meta character
|
|
* nor starts with one of the builtins then we execute the command directly
|
|
* without invoking a shell.
|
|
*
|
|
* Results:
|
|
* 0 if the command succeeded, 1 if an error occurred.
|
|
*
|
|
* Side Effects:
|
|
* The node's 'made' field may be set to ERROR.
|
|
*/
|
|
static int
|
|
Compat_RunCommand(char *cmd, GNode *gn)
|
|
{
|
|
ArgArray aa;
|
|
char *cmdStart; /* Start of expanded command */
|
|
Boolean silent; /* Don't print command */
|
|
Boolean doit; /* Execute even in -n */
|
|
Boolean errCheck; /* Check errors */
|
|
int reason; /* Reason for child's death */
|
|
int status; /* Description of child's death */
|
|
LstNode *cmdNode; /* Node where current cmd is located */
|
|
char **av; /* Argument vector for thing to exec */
|
|
ProcStuff ps;
|
|
|
|
silent = gn->type & OP_SILENT;
|
|
errCheck = !(gn->type & OP_IGNORE);
|
|
doit = FALSE;
|
|
|
|
cmdNode = Lst_Member(&gn->commands, cmd);
|
|
cmdStart = Buf_Peel(Var_Subst(cmd, gn, FALSE));
|
|
|
|
/*
|
|
* brk_string will return an argv with a NULL in av[0], thus causing
|
|
* execvp() to choke and die horribly. Besides, how can we execute a
|
|
* null command? In any case, we warn the user that the command
|
|
* expanded to nothing (is this the right thing to do?).
|
|
*/
|
|
if (*cmdStart == '\0') {
|
|
free(cmdStart);
|
|
Error("%s expands to empty string", cmd);
|
|
return (0);
|
|
} else {
|
|
cmd = cmdStart;
|
|
}
|
|
Lst_Replace(cmdNode, cmdStart);
|
|
|
|
if ((gn->type & OP_SAVE_CMDS) && (gn != ENDNode)) {
|
|
Lst_AtEnd(&ENDNode->commands, cmdStart);
|
|
return (0);
|
|
} else if (strcmp(cmdStart, "...") == 0) {
|
|
gn->type |= OP_SAVE_CMDS;
|
|
return (0);
|
|
}
|
|
|
|
while (*cmd == '@' || *cmd == '-' || *cmd == '+') {
|
|
switch (*cmd) {
|
|
|
|
case '@':
|
|
silent = DEBUG(LOUD) ? FALSE : TRUE;
|
|
break;
|
|
|
|
case '-':
|
|
errCheck = FALSE;
|
|
break;
|
|
|
|
case '+':
|
|
doit = TRUE;
|
|
break;
|
|
}
|
|
cmd++;
|
|
}
|
|
|
|
while (isspace((unsigned char)*cmd))
|
|
cmd++;
|
|
|
|
/*
|
|
* Print the command before echoing if we're not supposed to be quiet
|
|
* for this one. We also print the command if -n given, but not if '+'.
|
|
*/
|
|
if (!silent || (noExecute && !doit)) {
|
|
printf("%s\n", cmd);
|
|
fflush(stdout);
|
|
}
|
|
|
|
/*
|
|
* If we're not supposed to execute any commands, this is as far as
|
|
* we go...
|
|
*/
|
|
if (!doit && noExecute) {
|
|
return (0);
|
|
}
|
|
|
|
ps.in = STDIN_FILENO;
|
|
ps.out = STDOUT_FILENO;
|
|
ps.err = STDERR_FILENO;
|
|
|
|
ps.merge_errors = 0;
|
|
ps.pgroup = 0;
|
|
ps.searchpath = 1;
|
|
|
|
if ((av = shellneed(&aa, cmd)) == NULL) {
|
|
/*
|
|
* Shell meta character or shell builtin found - pass
|
|
* command to shell. We give the shell the -e flag as
|
|
* well as -c if it is supposed to exit when it hits an error.
|
|
*/
|
|
ps.argv = emalloc(4 * sizeof(char *));
|
|
ps.argv[0] = strdup(commandShell->path);
|
|
ps.argv[1] = strdup(errCheck ? "-ec" : "-c");
|
|
ps.argv[2] = strdup(cmd);
|
|
ps.argv[3] = NULL;
|
|
ps.argv_free = 1;
|
|
} else {
|
|
ps.argv = av;
|
|
ps.argv_free = 0;
|
|
}
|
|
ps.errCheck = errCheck;
|
|
|
|
/*
|
|
* Warning since we are doing vfork() instead of fork(),
|
|
* do not allocate memory in the child process!
|
|
*/
|
|
if ((ps.child_pid = vfork()) == -1) {
|
|
Fatal("Could not fork");
|
|
|
|
} else if (ps.child_pid == 0) {
|
|
/*
|
|
* Child
|
|
*/
|
|
Proc_Exec(&ps);
|
|
/* NOTREACHED */
|
|
|
|
} else {
|
|
if (ps.argv_free) {
|
|
free(ps.argv[2]);
|
|
free(ps.argv[1]);
|
|
free(ps.argv[0]);
|
|
free(ps.argv);
|
|
} else {
|
|
ArgArray_Done(&aa);
|
|
}
|
|
|
|
/*
|
|
* we need to print out the command associated with this
|
|
* Gnode in Targ_PrintCmd from Targ_PrintGraph when debugging
|
|
* at level g2, in main(), Fatal() and DieHorribly(),
|
|
* therefore do not free it when debugging.
|
|
*/
|
|
if (!DEBUG(GRAPH2)) {
|
|
free(cmdStart);
|
|
}
|
|
|
|
/*
|
|
* The child is off and running. Now all we can do is wait...
|
|
*/
|
|
reason = ProcWait(&ps);
|
|
|
|
if (interrupted)
|
|
CompatInterrupt(interrupted);
|
|
|
|
/*
|
|
* Decode and report the reason child exited, then
|
|
* indicate how we handled it.
|
|
*/
|
|
if (WIFEXITED(reason)) {
|
|
status = WEXITSTATUS(reason);
|
|
if (status == 0) {
|
|
return (0);
|
|
} else {
|
|
printf("*** Error code %d", status);
|
|
}
|
|
} else if (WIFSTOPPED(reason)) {
|
|
status = WSTOPSIG(reason);
|
|
} else {
|
|
status = WTERMSIG(reason);
|
|
printf("*** Signal %d", status);
|
|
}
|
|
|
|
if (ps.errCheck) {
|
|
gn->made = ERROR;
|
|
if (keepgoing) {
|
|
/*
|
|
* Abort the current
|
|
* target, but let
|
|
* others continue.
|
|
*/
|
|
printf(" (continuing)\n");
|
|
}
|
|
return (status);
|
|
} else {
|
|
/*
|
|
* Continue executing
|
|
* commands for this target.
|
|
* If we return 0, this will
|
|
* happen...
|
|
*/
|
|
printf(" (ignored)\n");
|
|
return (0);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Compat_Make --
|
|
* Make a target, given the parent, to abort if necessary.
|
|
*
|
|
* Side Effects:
|
|
* If an error is detected and not being ignored, the process exits.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
int
|
|
Compat_Make(GNode *gn, GNode *pgn)
|
|
{
|
|
LstNode *ln;
|
|
|
|
if (gn->type & OP_USE) {
|
|
Make_HandleUse(gn, pgn);
|
|
|
|
} else if (gn->made == UNMADE) {
|
|
/*
|
|
* First mark ourselves to be made, then apply whatever
|
|
* transformations the suffix module thinks are necessary.
|
|
* Once that's done, we can descend and make all our children.
|
|
* If any of them has an error but the -k flag was given, our
|
|
* 'make' field will be set FALSE again. This is our signal to
|
|
* not attempt to do anything but abort our parent as well.
|
|
*/
|
|
gn->make = TRUE;
|
|
gn->made = BEINGMADE;
|
|
Suff_FindDeps(gn);
|
|
LST_FOREACH(ln, &gn->children)
|
|
Compat_Make(Lst_Datum(ln), gn);
|
|
if (!gn->make) {
|
|
gn->made = ABORTED;
|
|
pgn->make = FALSE;
|
|
return (0);
|
|
}
|
|
|
|
if (Lst_Member(&gn->iParents, pgn) != NULL) {
|
|
Var_Set(IMPSRC, Var_Value(TARGET, gn), pgn);
|
|
}
|
|
|
|
/*
|
|
* All the children were made ok. Now cmtime contains the
|
|
* modification time of the newest child, we need to find out
|
|
* if we exist and when we were modified last. The criteria for
|
|
* datedness are defined by the Make_OODate function.
|
|
*/
|
|
DEBUGF(MAKE, ("Examining %s...", gn->name));
|
|
if (!Make_OODate(gn)) {
|
|
gn->made = UPTODATE;
|
|
DEBUGF(MAKE, ("up-to-date.\n"));
|
|
return (0);
|
|
} else {
|
|
DEBUGF(MAKE, ("out-of-date.\n"));
|
|
}
|
|
|
|
/*
|
|
* If the user is just seeing if something is out-of-date,
|
|
* exit now to tell him/her "yes".
|
|
*/
|
|
if (queryFlag) {
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* We need to be re-made. We also have to make sure we've got
|
|
* a $? variable. To be nice, we also define the $> variable
|
|
* using Make_DoAllVar().
|
|
*/
|
|
Make_DoAllVar(gn);
|
|
|
|
/*
|
|
* Alter our type to tell if errors should be ignored or things
|
|
* should not be printed so Compat_RunCommand knows what to do.
|
|
*/
|
|
if (Targ_Ignore(gn)) {
|
|
gn->type |= OP_IGNORE;
|
|
}
|
|
if (Targ_Silent(gn)) {
|
|
gn->type |= OP_SILENT;
|
|
}
|
|
|
|
if (Job_CheckCommands(gn, Fatal)) {
|
|
/*
|
|
* Our commands are ok, but we still have to worry
|
|
* about the -t flag...
|
|
*/
|
|
if (!touchFlag) {
|
|
curTarg = gn;
|
|
LST_FOREACH(ln, &gn->commands) {
|
|
if (Compat_RunCommand(Lst_Datum(ln),
|
|
gn))
|
|
break;
|
|
}
|
|
curTarg = NULL;
|
|
} else {
|
|
Job_Touch(gn, gn->type & OP_SILENT);
|
|
}
|
|
} else {
|
|
gn->made = ERROR;
|
|
}
|
|
|
|
if (gn->made != ERROR) {
|
|
/*
|
|
* If the node was made successfully, mark it so, update
|
|
* its modification time and timestamp all its parents.
|
|
* Note that for .ZEROTIME targets, the timestamping
|
|
* isn't done. This is to keep its state from affecting
|
|
* that of its parent.
|
|
*/
|
|
gn->made = MADE;
|
|
#ifndef RECHECK
|
|
/*
|
|
* We can't re-stat the thing, but we can at least take
|
|
* care of rules where a target depends on a source that
|
|
* actually creates the target, but only if it has
|
|
* changed, e.g.
|
|
*
|
|
* parse.h : parse.o
|
|
*
|
|
* parse.o : parse.y
|
|
* yacc -d parse.y
|
|
* cc -c y.tab.c
|
|
* mv y.tab.o parse.o
|
|
* cmp -s y.tab.h parse.h || mv y.tab.h parse.h
|
|
*
|
|
* In this case, if the definitions produced by yacc
|
|
* haven't changed from before, parse.h won't have been
|
|
* updated and gn->mtime will reflect the current
|
|
* modification time for parse.h. This is something of a
|
|
* kludge, I admit, but it's a useful one..
|
|
*
|
|
* XXX: People like to use a rule like
|
|
*
|
|
* FRC:
|
|
*
|
|
* To force things that depend on FRC to be made, so we
|
|
* have to check for gn->children being empty as well...
|
|
*/
|
|
if (!Lst_IsEmpty(&gn->commands) ||
|
|
Lst_IsEmpty(&gn->children)) {
|
|
gn->mtime = now;
|
|
}
|
|
#else
|
|
/*
|
|
* This is what Make does and it's actually a good
|
|
* thing, as it allows rules like
|
|
*
|
|
* cmp -s y.tab.h parse.h || cp y.tab.h parse.h
|
|
*
|
|
* to function as intended. Unfortunately, thanks to
|
|
* the stateless nature of NFS (and the speed of this
|
|
* program), there are times when the modification time
|
|
* of a file created on a remote machine will not be
|
|
* modified before the stat() implied by the Dir_MTime
|
|
* occurs, thus leading us to believe that the file
|
|
* is unchanged, wreaking havoc with files that depend
|
|
* on this one.
|
|
*
|
|
* I have decided it is better to make too much than to
|
|
* make too little, so this stuff is commented out
|
|
* unless you're sure it's ok.
|
|
* -- ardeb 1/12/88
|
|
*/
|
|
if (noExecute || Dir_MTime(gn) == 0) {
|
|
gn->mtime = now;
|
|
}
|
|
if (gn->cmtime > gn->mtime)
|
|
gn->mtime = gn->cmtime;
|
|
DEBUGF(MAKE, ("update time: %s\n",
|
|
Targ_FmtTime(gn->mtime)));
|
|
#endif
|
|
if (!(gn->type & OP_EXEC)) {
|
|
pgn->childMade = TRUE;
|
|
Make_TimeStamp(pgn, gn);
|
|
}
|
|
|
|
} else if (keepgoing) {
|
|
pgn->make = FALSE;
|
|
|
|
} else {
|
|
printf("\n\nStop in %s.\n", Var_Value(".CURDIR", gn));
|
|
exit(1);
|
|
}
|
|
} else if (gn->made == ERROR) {
|
|
/*
|
|
* Already had an error when making this beastie. Tell the
|
|
* parent to abort.
|
|
*/
|
|
pgn->make = FALSE;
|
|
} else {
|
|
if (Lst_Member(&gn->iParents, pgn) != NULL) {
|
|
Var_Set(IMPSRC, Var_Value(TARGET, gn), pgn);
|
|
}
|
|
switch(gn->made) {
|
|
case BEINGMADE:
|
|
Error("Graph cycles through %s\n", gn->name);
|
|
gn->made = ERROR;
|
|
pgn->make = FALSE;
|
|
break;
|
|
case MADE:
|
|
if ((gn->type & OP_EXEC) == 0) {
|
|
pgn->childMade = TRUE;
|
|
Make_TimeStamp(pgn, gn);
|
|
}
|
|
break;
|
|
case UPTODATE:
|
|
if ((gn->type & OP_EXEC) == 0) {
|
|
Make_TimeStamp(pgn, gn);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*-
|
|
* Install signal handlers for Compat_Run
|
|
*/
|
|
void
|
|
Compat_InstallSignalHandlers(void)
|
|
{
|
|
|
|
if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
|
|
signal(SIGINT, CompatCatchSig);
|
|
}
|
|
if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
|
|
signal(SIGTERM, CompatCatchSig);
|
|
}
|
|
if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
|
|
signal(SIGHUP, CompatCatchSig);
|
|
}
|
|
if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
|
|
signal(SIGQUIT, CompatCatchSig);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Compat_Run --
|
|
* Start making again, given a list of target nodes.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* Guess what?
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Compat_Run(Lst *targs)
|
|
{
|
|
GNode *gn = NULL; /* Current root target */
|
|
LstNode *ln;
|
|
|
|
Compat_InstallSignalHandlers();
|
|
ENDNode = Targ_FindNode(".END", TARG_CREATE);
|
|
/*
|
|
* If the user has defined a .BEGIN target, execute the commands
|
|
* attached to it.
|
|
*/
|
|
if (!queryFlag) {
|
|
gn = Targ_FindNode(".BEGIN", TARG_NOCREATE);
|
|
if (gn != NULL) {
|
|
LST_FOREACH(ln, &gn->commands) {
|
|
if (Compat_RunCommand(Lst_Datum(ln), gn))
|
|
break;
|
|
}
|
|
if (gn->made == ERROR) {
|
|
printf("\n\nStop.\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* For each entry in the list of targets to create, call Compat_Make on
|
|
* it to create the thing. Compat_Make will leave the 'made' field of gn
|
|
* in one of several states:
|
|
* UPTODATE gn was already up-to-date
|
|
* MADE gn was recreated successfully
|
|
* ERROR An error occurred while gn was being created
|
|
* ABORTED gn was not remade because one of its inferiors
|
|
* could not be made due to errors.
|
|
*/
|
|
makeErrors = 0;
|
|
while (!Lst_IsEmpty(targs)) {
|
|
gn = Lst_DeQueue(targs);
|
|
Compat_Make(gn, gn);
|
|
|
|
if (gn->made == UPTODATE) {
|
|
printf("`%s' is up to date.\n", gn->name);
|
|
} else if (gn->made == ABORTED) {
|
|
printf("`%s' not remade because of errors.\n",
|
|
gn->name);
|
|
makeErrors++;
|
|
} else if (gn->made == ERROR) {
|
|
makeErrors++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If the user has defined a .END target, run its commands.
|
|
*/
|
|
if (makeErrors == 0) {
|
|
LST_FOREACH(ln, &ENDNode->commands) {
|
|
if (Compat_RunCommand(Lst_Datum(ln), ENDNode))
|
|
break;
|
|
}
|
|
}
|
|
}
|