6891ddd74e
2004-07-14 Jeffrey Stedfast <fejj@novell.com> Fix for bug #61538 * camel-process.c (camel_process_fork): Same. * camel-filter-driver.c (pipe_to_system): Fixed strings svn path=/trunk/; revision=26652
152 lines
3.1 KiB
C
152 lines
3.1 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
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/*
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* Authors: Jeffrey Stedfast <fejj@ximian.com>
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*
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* Copyright 2003 Ximian, Inc. (www.ximian.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include "camel-process.h"
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pid_t
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camel_process_fork (const char *path, char **argv, int *infd, int *outfd, int *errfd, CamelException *ex)
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{
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int errnosav, fd[6], i;
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pid_t pid;
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for (i = 0; i < 6; i++)
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fds[i] = -1;
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for (i = 0; i < 6; i += 2) {
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if (pipe (fd + i) == -1) {
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errnosav = errno;
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camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
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_("Failed to create pipe to '%s': %s"),
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argv[0], strerror (errno));
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for (i = 0; i < 6; i++) {
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if (fd[i] == -1)
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break;
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close (fd[i]);
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}
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errno = errnosav;
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return -1;
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}
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}
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if (!(pid = fork ())) {
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/* child process */
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int maxfd, nullfd = -1;
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if (!outfd || !errfd)
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nullfd = open ("/dev/null", O_WRONLY);
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if (dup2 (fd[0], STDIN_FILENO) == -1)
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_exit (255);
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if (dup2 (outfd ? fd[3] : nullfd, STDOUT_FILENO) == -1)
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_exit (255);
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if (dup2 (errfd ? fd[5] : nullfd, STDERR_FILENO) == -1)
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_exit (255);
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setsid ();
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if ((maxfd = sysconf (_SC_OPEN_MAX)) > 0) {
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for (i = 3; i < maxfd; i++)
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fcntl (i, F_SETFD, FD_CLOEXEC);
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}
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execv (path, argv);
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_exit (255);
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} else if (pid == -1) {
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camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
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_("Failed to create child process '%s': %s"),
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argv[0], strerror (errno));
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return -1;
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}
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/* parent process */
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close (fd[0]);
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close (fd[3]);
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close (fd[5]);
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if (infd)
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*infd = fd[1];
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else
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close (fd[1]);
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if (outfd)
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*outfd = fd[2];
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else
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close (fd[2]);
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if (errfd)
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*errfd = fd[4];
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else
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close (fd[4]);
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return pid;
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}
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int
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camel_process_wait (pid_t pid)
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{
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sigset_t mask, omask;
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int status;
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pid_t r;
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sigemptyset (&mask);
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sigaddset (&mask, SIGALRM);
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sigprocmask (SIG_BLOCK, &mask, &omask);
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alarm (1);
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r = waitpid (pid, &status, 0);
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alarm (0);
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sigprocmask (SIG_SETMASK, &omask, NULL);
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if (r == (pid_t) -1 && errno == EINTR) {
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kill (pid, SIGTERM);
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sleep (1);
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r = waitpid (pid, &status, WNOHANG);
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if (r == (pid_t) 0) {
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kill (pid, SIGKILL);
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sleep (1);
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r = waitpid (pid, &status, WNOHANG);
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}
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}
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if (r != (pid_t) -1 && WIFEXITED (status))
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return WEXITSTATUS (status);
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else
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return -1;
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}
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