/* libguestfs - the guestfsd daemon
- * Copyright (C) 2009 Red Hat Inc.
+ * Copyright (C) 2009-2011 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
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
+#include <dirent.h>
#include "daemon.h"
#include "c-ctype.h"
if (r == -1) {
reply_with_error ("%s", err);
free (err);
+ free (argv);
return -1;
}
free (err);
+ free (argv);
udev_settle ();
if (r == -1) {
reply_with_error ("vgchange: %s", err);
free (err);
+ free (argv);
return -1;
}
free (err);
+ free (argv);
udev_settle ();
return canonical; /* caller frees */
}
+
+/* List everything in /dev/mapper which *isn't* an LV (RHBZ#688062). */
+char **
+do_list_dm_devices (void)
+{
+ char **ret = NULL;
+ int size = 0, alloc = 0;
+ struct dirent *d;
+ DIR *dir;
+ int r;
+
+ dir = opendir ("/dev/mapper");
+ if (!dir) {
+ reply_with_perror ("opendir: /dev/mapper");
+ return NULL;
+ }
+
+ while (1) {
+ errno = 0;
+ d = readdir (dir);
+ if (d == NULL) break;
+
+ /* Ignore . and .. */
+ if (STREQ (d->d_name, ".") || STREQ (d->d_name, ".."))
+ continue;
+
+ /* Ignore /dev/mapper/control which is used internally by dm. */
+ if (STREQ (d->d_name, "control"))
+ continue;
+
+ size_t len = strlen (d->d_name);
+ char devname[len+64];
+
+ snprintf (devname, len+64, "/dev/mapper/%s", d->d_name);
+
+ /* Ignore dm devices which are LVs. */
+ r = lv_canonical (devname, NULL);
+ if (r == -1) {
+ free_stringslen (ret, size);
+ closedir (dir);
+ return NULL;
+ }
+ if (r)
+ continue;
+
+ /* Not an LV, so add it. */
+ if (add_string (&ret, &size, &alloc, devname) == -1) {
+ closedir (dir);
+ return NULL;
+ }
+ }
+
+ /* Did readdir fail? */
+ if (errno != 0) {
+ reply_with_perror ("readdir: /dev/mapper");
+ free_stringslen (ret, size);
+ closedir (dir);
+ return NULL;
+ }
+
+ /* Close the directory handle. */
+ if (closedir (dir) == -1) {
+ reply_with_perror ("closedir: /dev/mapper");
+ free_stringslen (ret, size);
+ return NULL;
+ }
+
+ /* Sort the output (may be empty). */
+ if (ret != NULL)
+ sort_strings (ret, size);
+
+ /* NULL-terminate the list. */
+ if (add_string (&ret, &size, &alloc, NULL) == -1)
+ return NULL;
+
+ return ret;
+}