83 lines
2.7 KiB
C
83 lines
2.7 KiB
C
/*
|
|
* Copyright (c) 2011 , Jonathan Nieder
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the copyright holders or contributors may not be used to
|
|
* endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
|
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include "exitcodes.h"
|
|
#include "prototypes.h"
|
|
|
|
int run_command (const char *cmd, const char *argv[],
|
|
/*@null@*/const char *envp[], /*@out@*/int *status)
|
|
{
|
|
pid_t pid, wpid;
|
|
|
|
if (NULL == envp) {
|
|
envp = (const char **)environ;
|
|
}
|
|
|
|
(void) fflush (stdout);
|
|
(void) fflush (stderr);
|
|
|
|
pid = fork ();
|
|
if (0 == pid) {
|
|
(void) execve (cmd, (char * const *) argv,
|
|
(char * const *) envp);
|
|
if (ENOENT == errno) {
|
|
exit (E_CMD_NOTFOUND);
|
|
}
|
|
fprintf (stderr, "%s: cannot execute %s: %s\n",
|
|
Prog, cmd, strerror (errno));
|
|
exit (E_CMD_NOEXEC);
|
|
} else if ((pid_t)-1 == pid) {
|
|
fprintf (stderr, "%s: cannot execute %s: %s\n",
|
|
Prog, cmd, strerror (errno));
|
|
return -1;
|
|
}
|
|
|
|
do {
|
|
wpid = waitpid (pid, status, 0);
|
|
} while ( ((pid_t)-1 == wpid && errno == EINTR)
|
|
|| ((pid_t)-1 != wpid && wpid != pid));
|
|
|
|
if ((pid_t)-1 == wpid) {
|
|
fprintf (stderr, "%s: waitpid (status: %d): %s\n",
|
|
Prog, *status, strerror (errno));
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|