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/*
Copyright (C) 2009 RedHat inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "run-command.h"
#include "abrtlib.h"
/*
Inspired by git code.
http://git.kernel.org/?p=git/git.git;a=blob;f=run-command.c;hb=HEAD
*/
static pid_t start_command(char **argv)
{
pid_t pid = vfork();
if (pid < 0)
{
perror_msg_and_die("vfork");
}
if (pid == 0)
{ // new process
execvp(argv[0], argv);
exit(127);
}
return pid;
}
static int finish_command(pid_t pid, char **argv)
{
pid_t waiting;
int status;
while ((waiting = waitpid(pid, &status, 0)) < 0 && errno == EINTR)
continue;
if (waiting < 0)
perror_msg_and_die("waitpid");
int code = -1;
if (WIFSIGNALED(status))
{
code = WTERMSIG(status);
error_msg("'%s' killed by signal %d", argv[0], code);
code += 128; /* shells use this convention for deaths by signal */
}
else /* if (WIFEXITED(status)) */
{
code = WEXITSTATUS(status);
if (code == 127)
{
error_msg_and_die("Can't run '%s'", argv[0]);
}
}
return code;
}
int run_command(char **argv)
{
pid_t pid = start_command(argv);
return finish_command(pid, argv);
}
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