mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-21 22:53:37 +00:00
89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
/* libguestfs - the guestfsd daemon
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* Copyright (C) 2009 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "../src/guestfs_protocol.h"
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#include "daemon.h"
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#include "actions.h"
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char **
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do_initrd_list (char *path)
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{
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FILE *fp;
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int len;
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char *cmd;
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char filename[PATH_MAX];
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char **filenames = NULL;
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int size = 0, alloc = 0;
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NEED_ROOT (NULL);
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ABS_PATH (path, NULL);
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/* "zcat /sysroot/<path> | cpio --quiet -it", but path must be quoted. */
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len = 64 + 2 * strlen (path);
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cmd = malloc (len);
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if (!cmd) {
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reply_with_perror ("malloc");
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return NULL;
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}
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strcpy (cmd, "zcat /sysroot");
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shell_quote (cmd+13, len-13, path);
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strcat (cmd, " | cpio --quiet -it");
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fprintf (stderr, "%s\n", cmd);
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fp = popen (cmd, "r");
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if (fp == NULL) {
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reply_with_perror ("popen: %s", cmd);
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free (cmd);
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return NULL;
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}
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free (cmd);
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while (fgets (filename, sizeof filename, fp) != NULL) {
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len = strlen (filename);
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if (len > 0 && filename[len-1] == '\n')
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filename[len-1] = '\0';
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if (add_string (&filenames, &size, &alloc, filename) == -1) {
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pclose (fp);
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return NULL;
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}
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}
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if (add_string (&filenames, &size, &alloc, NULL) == -1) {
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pclose (fp);
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return NULL;
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}
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if (pclose (fp) != 0) {
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reply_with_perror ("pclose");
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free_strings (filenames);
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return NULL;
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}
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return filenames;
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}
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