1 /* xsystem.c - system(3) with error messages
5 Copyright (C) 2001 University of Southern California
7 This program is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License as
9 published by the Free Software Foundation; either version 2, or (at
10 your option) any later version.
12 This program is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
18 #include <sys/types.h>
23 #include "libbb/libbb.h"
25 /* Like system(3), but with error messages printed if the fork fails
26 or if the child process dies due to an uncaught signal. Also, the
27 return value is a bit simpler:
29 -1 if there was any problem
30 Otherwise, the 8-bit return value of the program ala WEXITSTATUS
31 as defined in <sys/wait.h>.
33 int xsystem(const char *argv
[])
42 opkg_perror(ERROR
, "%s: vfork", argv
[0]);
46 execvp(argv
[0], (char *const *)argv
);
53 if (waitpid(pid
, &status
, 0) == -1) {
54 opkg_perror(ERROR
, "%s: waitpid", argv
[0]);
58 if (WIFSIGNALED(status
)) {
59 opkg_msg(ERROR
, "%s: Child killed by signal %d.\n",
60 argv
[0], WTERMSIG(status
));
64 if (!WIFEXITED(status
)) {
65 /* shouldn't happen */
66 opkg_msg(ERROR
, "%s: Your system is broken: got status %d "
67 "from waitpid.\n", argv
[0], status
);
71 return WEXITSTATUS(status
);