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/*
* Copyright (C) 2009 Citrix Ltd.
* Author Vincent Hanquez <vincent.hanquez@eu.citrix.com>
* Author Stefano Stabellini <stefano.stabellini@eu.citrix.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; version 2.1 only. with the special
* exception on linking described in file LICENSE.
*
* 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 Lesser General Public License for more details.
*/
#include "libxl_osdeps.h"
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include "libxl.h"
#include "libxl_internal.h"
int libxl_exec(struct libxl_ctx *ctx, int stdinfd, int stdoutfd, int stderrfd,
char *arg0, char **args)
{
int pid, i;
pid = fork();
if (pid == -1) {
XL_LOG_ERRNO(ctx, XL_LOG_ERROR, "fork failed");
return -1;
}
if (pid == 0) {
/* child */
if (stdinfd != -1)
dup2(stdinfd, STDIN_FILENO);
if (stdoutfd != -1)
dup2(stdoutfd, STDOUT_FILENO);
if (stderrfd != -1)
dup2(stderrfd, STDERR_FILENO);
for (i = 4; i < 256; i++)
close(i);
execv(arg0, args);
exit(256);
}
return pid;
}
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