Implement list-devices and list-partitions.

1 files changed, 133 insertions, 0 deletions

diff --git a/daemon/devsparts.c b/daemon/devsparts.c
new file mode 100644
index 00000000..b0d79569
--- /dev/null
+++ b/daemon/devsparts.c
@@ -0,0 +1,133 @@
+/* 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 <unistd.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <sys/stat.h>
+
+#include "daemon.h"
+#include "actions.h"
+
+char **
+do_list_devices (void)
+{
+  char **r = NULL;
+  int size = 0, alloc = 0;
+  DIR *dir;
+  struct dirent *d;
+  char buf[256];
+
+  dir = opendir ("/sys/block");
+  if (!dir) {
+    reply_with_perror ("opendir: /sys/block");
+    return NULL;
+  }
+
+  while ((d = readdir (dir)) != NULL) {
+    if (strncmp (d->d_name, "sd", 2) == 0) {
+      snprintf (buf, sizeof buf, "/dev/%s", d->d_name);
+      if (add_string (&r, &size, &alloc, buf) == -1) {
+	closedir (dir);
+	return NULL;
+      }
+    }
+  }
+
+  if (add_string (&r, &size, &alloc, NULL) == -1) {
+    closedir (dir);
+    return NULL;
+  }
+
+  if (closedir (dir) == -1) {
+    reply_with_perror ("closedir: /sys/block");
+    free_strings (r);
+    return NULL;
+  }
+
+  sort_strings (r, size-1);
+  return r;
+}
+
+char **
+do_list_partitions (void)
+{
+  char **r = NULL;
+  int size = 0, alloc = 0;
+  DIR *dir, *dir2;
+  struct dirent *d;
+  char buf[256], devname[256];
+
+  dir = opendir ("/sys/block");
+  if (!dir) {
+    reply_with_perror ("opendir: /sys/block");
+    return NULL;
+  }
+
+  while ((d = readdir (dir)) != NULL) {
+    if (strncmp (d->d_name, "sd", 2) == 0) {
+      strncpy (devname, d->d_name, sizeof devname);
+      devname[sizeof devname - 1] = '\0';
+
+      snprintf (buf, sizeof buf, "/sys/block/%s", devname);
+
+      dir2 = opendir (buf);
+      if (!dir2) {
+	reply_with_perror ("opendir: %s", buf);
+	free_stringslen (r, size);
+	return NULL;
+      }
+      while ((d = readdir (dir2)) != NULL) {
+	if (strncmp (d->d_name, devname, strlen (devname)) == 0) {
+	  snprintf (buf, sizeof buf, "/dev/%s", d->d_name);
+
+	  if (add_string (&r, &size, &alloc, buf) == -1) {
+	    closedir (dir2);
+	    closedir (dir);
+	    return NULL;
+	  }
+	}
+      }
+
+      if (closedir (dir2) == -1) {
+	reply_with_perror ("closedir: /sys/block/%s", devname);
+	free_stringslen (r, size);
+	return NULL;
+      }
+    }
+  }
+
+  if (add_string (&r, &size, &alloc, NULL) == -1) {
+    closedir (dir);
+    return NULL;
+  }
+
+  if (closedir (dir) == -1) {
+    reply_with_perror ("closedir: /sys/block");
+    free_strings (r);
+    return NULL;
+  }
+
+  sort_strings (r, size-1);
+  return r;
+}