[Libguestfs] [PATCH 3/5] New API: btrfs_filesystem_get_label

[Hu Tao]

Signed-off-by: Hu Tao <hutao at cn.fujitsu.com>
---
 daemon/btrfs.c       | 32 ++++++++++++++++++++++++++++++++
 generator/actions.ml | 15 +++++++++++++++
 src/MAX_PROC_NR      |  2 +-
 3 files changed, 48 insertions(+), 1 deletion(-)

diff --git a/daemon/btrfs.c b/daemon/btrfs.c
index de20bc3..6c74892 100644
--- a/daemon/btrfs.c
+++ b/daemon/btrfs.c
@@ -1399,3 +1399,35 @@ do_btrfs_check (const char *device)
 
   return 0;
 }
+
+char *
+do_btrfs_filesystem_get_label (const char *path)
+{
+  const size_t MAX_ARGS = 64;
+  const char *argv[MAX_ARGS];
+  size_t i = 0;
+  CLEANUP_FREE char *path_buf = NULL;
+  CLEANUP_FREE char *err = NULL;
+  char *out;
+  int r;
+
+  path_buf = sysroot_path (path);
+  if (path_buf == NULL) {
+    reply_with_perror ("malloc");
+    return NULL;
+  }
+
+  ADD_ARG (argv, i, str_btrfs);
+  ADD_ARG (argv, i, "filesystem");
+  ADD_ARG (argv, i, "label");
+  ADD_ARG (argv, i, path_buf);
+  ADD_ARG (argv, i, NULL);
+
+  r = commandv (&out, &err, argv);
+  if (r == -1) {
+    reply_with_error ("%s: %s", path, err);
+    return NULL;
+  }
+
+  return out;
+}
diff --git a/generator/actions.ml b/generator/actions.ml
index c328319..5223eb8 100644
--- a/generator/actions.ml
+++ b/generator/actions.ml
@@ -12281,6 +12281,21 @@ corrupt data." };
     longdesc = "\
 Check or repair a btrfs filesystem offline." };
 
+  { defaults with
+    name = "btrfs_filesystem_get_label";
+    style = RString "label", [Pathname "path"], [];
+    proc_nr = Some 437;
+    optional = Some "btrfs"; camel_name = "BTRFSFilesystemGetLabel";
+    tests = [
+      InitPartition, Always, TestResultString (
+        [["mkfs_btrfs"; "/dev/sda1"; ""; ""; "NOARG"; ""; "label"; "NOARG"; ""; ""];
+         ["mount"; "/dev/sda1"; "/"];
+         ["btrfs_filesystem_get_label"; "/";]], "label\n"), [];
+    ];
+    shortdesc = "get a btrfs filesystem's label";
+    longdesc = "\
+Get a btrfs filesystem's label." };
+
 ]
 
 (* Non-API meta-commands available only in guestfish.
diff --git a/src/MAX_PROC_NR b/src/MAX_PROC_NR
index 246662b..ce9cd49 100644
--- a/src/MAX_PROC_NR
+++ b/src/MAX_PROC_NR
@@ -1 +1 @@
-436
+437
-- 
2.2.1