guestfs.h: Include <stdint.h>.

[libguestfs.git] / daemon / lvm.c

diff --git a/daemon/lvm.c b/daemon/lvm.c
index 9865bb2..82cdf3f 100644 (file)
--- a/daemon/lvm.c
+++ b/daemon/lvm.c
@@ -26,6 +26,14 @@
 #include "daemon.h"
 #include "c-ctype.h"
 #include "actions.h"
+#include "optgroups.h"
+
+int
+optgroup_lvm2_available (void)
+{
+  int r = access ("/sbin/lvm", X_OK);
+  return r == 0;
+}
 
 /* LVM actions.  Keep an eye on liblvm, although at the time
  * of writing it hasn't progressed very far.
@@ -210,7 +218,7 @@ do_vgcreate (const char *volgroup, char *const *physvols)
   for (i = 3; i <= argc; ++i)
     argv[i] = physvols[i-3];
 
-  r = commandv (NULL, &err, (char **) argv);
+  r = commandv (NULL, &err, (const char * const*) argv);
   if (r == -1) {
     reply_with_error ("%s", err);
     free (err);
@@ -262,7 +270,7 @@ do_lvresize (const char *logvol, int mbytes)
                "/sbin/lvm", "lvresize",
                "-L", size, logvol, NULL);
   if (r == -1) {
-    reply_with_error ("lvresize: %s", err);
+    reply_with_error ("%s", err);
     free (err);
     return -1;
   }
@@ -410,7 +418,7 @@ do_pvresize (const char *device)
   r = command (NULL, &err,
                "/sbin/lvm", "pvresize", device, NULL);
   if (r == -1) {
-    reply_with_error ("pvresize: %s: %s", device, err);
+    reply_with_error ("%s: %s", device, err);
     free (err);
     return -1;
   }
@@ -440,7 +448,7 @@ do_vg_activate (int activate, char *const *volgroups)
   for (i = 4; i <= argc; ++i)
     argv[i] = volgroups[i-4];
 
-  r = commandv (NULL, &err, (char **) argv);
+  r = commandv (NULL, &err, (const char * const*) argv);
   if (r == -1) {
     reply_with_error ("vgchange: %s", err);
     free (err);
@@ -460,3 +468,130 @@ do_vg_activate_all (int activate)
   char *empty[] = { NULL };
   return do_vg_activate (activate, empty);
 }
+
+int
+do_lvrename (const char *logvol, const char *newlogvol)
+{
+  char *err;
+  int r;
+
+  r = command (NULL, &err,
+               "/sbin/lvm", "lvrename",
+               logvol, newlogvol, NULL);
+  if (r == -1) {
+    reply_with_error ("%s -> %s: %s", logvol, newlogvol, err);
+    free (err);
+    return -1;
+  }
+
+  free (err);
+
+  udev_settle ();
+
+  return 0;
+}
+
+int
+do_vgrename (const char *volgroup, const char *newvolgroup)
+{
+  char *err;
+  int r;
+
+  r = command (NULL, &err,
+               "/sbin/lvm", "vgrename",
+               volgroup, newvolgroup, NULL);
+  if (r == -1) {
+    reply_with_error ("%s -> %s: %s", volgroup, newvolgroup, err);
+    free (err);
+    return -1;
+  }
+
+  free (err);
+
+  udev_settle ();
+
+  return 0;
+}
+
+static char *
+get_lvm_field (const char *cmd, const char *field, const char *device)
+{
+  char *out;
+  char *err;
+  int r = command (&out, &err,
+                   "/sbin/lvm", cmd,
+                   "--unbuffered", "--noheadings", "-o", field,
+                   device, NULL);
+  if (r == -1) {
+    reply_with_error ("%s: %s", device, err);
+    free (out);
+    free (err);
+    return NULL;
+  }
+
+  free (err);
+
+  trim (out);
+  return out;                   /* Caller frees. */
+}
+
+char *
+do_pvuuid (const char *device)
+{
+  return get_lvm_field ("pvs", "pv_uuid", device);
+}
+
+char *
+do_vguuid (const char *vgname)
+{
+  return get_lvm_field ("vgs", "vg_uuid", vgname);
+}
+
+char *
+do_lvuuid (const char *device)
+{
+  return get_lvm_field ("lvs", "lv_uuid", device);
+}
+
+static char **
+get_lvm_fields (const char *cmd, const char *field, const char *device)
+{
+  char *out;
+  char *err;
+  int r = command (&out, &err,
+                   "/sbin/lvm", cmd,
+                   "--unbuffered", "--noheadings", "-o", field,
+                   device, NULL);
+  if (r == -1) {
+    reply_with_error ("%s: %s", device, err);
+    free (out);
+    free (err);
+    return NULL;
+  }
+
+  free (err);
+
+  char **ret = split_lines (out);
+  free (out);
+
+  if (ret == NULL)
+    return NULL;
+
+  size_t i;
+  for (i = 0; ret[i] != NULL; ++i)
+    trim (ret[i]);
+
+  return ret;
+}
+
+char **
+do_vgpvuuids (const char *vgname)
+{
+  return get_lvm_fields ("vgs", "pv_uuid", vgname);
+}
+
+char **
+do_vglvuuids (const char *vgname)
+{
+  return get_lvm_fields ("vgs", "lv_uuid", vgname);
+}