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/* Copyright (C) 2001 Red Hat, Inc.
Written by Jakub Jelinek <jakub@redhat.com>, 2001.
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, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include <config.h>
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <sys/wait.h>
#include <unistd.h>
static pid_t pid;
int
execve_close (FILE *f)
{
pid_t p;
int status;
if (f != NULL)
fclose (f);
while ((p = waitpid (pid, &status, 0)) == -1 && errno == EINTR);
if (p == -1 || ! WIFEXITED (status))
return -1;
return WEXITSTATUS (status);
}
FILE *
execve_open (const char *path, char *const argv[], char *const envp[])
{
int p[2];
FILE *f;
if (pipe (p) < 0)
{
error (0, errno, "Could not run %s", path);
return NULL;
}
switch (vfork ())
{
case -1:
error (0, errno, "Could not run %s", path);
return NULL;
case 0:
close (p[0]);
if (p[1] != 1)
{
dup2 (p[1], 1);
close (p[1]);
}
dup2 (1, 2);
execve (path, argv, envp);
_exit (127);
}
close (p[1]);
f = fdopen (p[0], "r");
if (f == NULL)
{
close (p[0]);
execve_close (NULL);
}
return f;
}
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