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/* libguestfs
* Copyright (C) 2012 Red Hat 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 <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifndef O_CLOEXEC
#define O_CLOEXEC 0
#endif
/* Old <libvirt.h> had a slightly different definition of
* virDomainGetXMLDesc (using 'int' for flags instead of 'unsigned
* int'). To avoid an error trying to redefine it with a different
* declaration, don't include <libvirt.h> at all. Just copy enough to
* make the code compile.
*/
typedef struct _virDomain virDomain;
typedef virDomain *virDomainPtr;
char *
virDomainGetXMLDesc (virDomainPtr dom, unsigned int flags)
{
const char *path;
int fd;
struct stat statbuf;
char *buf, *p;
size_t n;
ssize_t r;
path = getenv ("FAKE_LIBVIRT_XML");
if (!path) {
fprintf (stderr, "environment variable FAKE_LIBVIRT_XML is not set\n");
_exit (1);
}
fprintf (stderr,
"fake_libvirt_xml: returning fake libvirt XML from %s\n", path);
fd = open (path, O_RDONLY | O_CLOEXEC);
if (fd == -1) {
perror (path);
_exit (1);
}
if (fstat (fd, &statbuf) == -1) {
perror ("fstat");
_exit (1);
}
buf = malloc (statbuf.st_size + 1);
if (buf == NULL) {
perror ("malloc");
_exit (1);
}
for (n = 0, p = buf; n < statbuf.st_size; ++n) {
r = read (fd, p, statbuf.st_size - n);
if (r == -1) {
perror ("read");
_exit (1);
}
if (r == 0)
break;
n += r;
p += r;
}
*p = '\0';
if (close (fd) == -1) {
perror ("close");
_exit (1);
}
return buf; /* caller frees */
}
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