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/* libguestfs - the guestfsd daemon
* Copyright (C) 2009 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <unistd.h>
#include "../src/guestfs_protocol.h"
#include "daemon.h"
#include "actions.h"
char **
do_initrd_list (const char *path)
{
FILE *fp;
char *cmd;
char filename[PATH_MAX];
char **filenames = NULL;
int size = 0, alloc = 0;
size_t len;
/* "zcat /sysroot/<path> | cpio --quiet -it", but path must be quoted. */
if (asprintf_nowarn (&cmd, "zcat %R | cpio --quiet -it", path) == -1) {
reply_with_perror ("asprintf");
return NULL;
}
if (verbose)
fprintf (stderr, "%s\n", cmd);
fp = popen (cmd, "r");
if (fp == NULL) {
reply_with_perror ("popen: %s", cmd);
free (cmd);
return NULL;
}
free (cmd);
while (fgets (filename, sizeof filename, fp) != NULL) {
len = strlen (filename);
if (len > 0 && filename[len-1] == '\n')
filename[len-1] = '\0';
if (add_string (&filenames, &size, &alloc, filename) == -1) {
pclose (fp);
return NULL;
}
}
if (add_string (&filenames, &size, &alloc, NULL) == -1) {
pclose (fp);
return NULL;
}
if (pclose (fp) != 0) {
reply_with_perror ("pclose");
free_strings (filenames);
return NULL;
}
return filenames;
}
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