77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
|
/*
|
||
|
|
* Copyright (c) 1988, 1993
|
||
|
|
* The Regents of the University of California. 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. All advertising materials mentioning features or use of this software
|
||
|
|
* must display the following acknowledgement:
|
||
|
|
* This product includes software developed by the University of
|
||
|
|
* California, Berkeley and its contributors.
|
||
|
|
* 4. Neither the name of the University nor the names of its contributors
|
||
|
|
* may be used to endorse or promote products derived from this software
|
||
|
|
* without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
* SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
||
|
|
static char sccsid[] = "@(#)system.c 8.1 (Berkeley) 6/4/93";
|
||
|
|
#endif /* LIBC_SCCS and not lint */
|
||
|
|
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <sys/wait.h>
|
||
|
|
#include <signal.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <stddef.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <paths.h>
|
||
|
|
|
||
|
|
system(command)
|
||
|
|
const char *command;
|
||
|
|
{
|
||
|
|
union wait pstat;
|
||
|
|
pid_t pid;
|
||
|
|
int omask;
|
||
|
|
sig_t intsave, quitsave;
|
||
|
|
|
||
|
|
if (!command) /* just checking... */
|
||
|
|
return(1);
|
||
|
|
|
||
|
|
omask = sigblock(sigmask(SIGCHLD));
|
||
|
|
switch(pid = vfork()) {
|
||
|
|
case -1: /* error */
|
||
|
|
(void)sigsetmask(omask);
|
||
|
|
pstat.w_status = 0;
|
||
|
|
pstat.w_retcode = 127;
|
||
|
|
return(pstat.w_status);
|
||
|
|
case 0: /* child */
|
||
|
|
(void)sigsetmask(omask);
|
||
|
|
execl(_PATH_BSHELL, "sh", "-c", command, (char *)NULL);
|
||
|
|
_exit(127);
|
||
|
|
}
|
||
|
|
intsave = signal(SIGINT, SIG_IGN);
|
||
|
|
quitsave = signal(SIGQUIT, SIG_IGN);
|
||
|
|
pid = waitpid(pid, (int *)&pstat, 0);
|
||
|
|
(void)sigsetmask(omask);
|
||
|
|
(void)signal(SIGINT, intsave);
|
||
|
|
(void)signal(SIGQUIT, quitsave);
|
||
|
|
return(pid == -1 ? -1 : pstat.w_status);
|
||
|
|
}
|