[Libguestfs] [PATCH v2 07/11] New API: btrfs_qgroup_create

Hu Tao
Thu, 11 Dec 2014 06:11:35 -0000

btrfs_qgroup_create creates a new qgroup.

Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
---
 daemon/btrfs.c       | 33 +++++++++++++++++++++++++++++++++
 generator/actions.ml | 17 +++++++++++++++++
 src/MAX_PROC_NR      |  2 +-
 3 files changed, 51 insertions(+), 1 deletion(-)

diff --git a/daemon/btrfs.c b/daemon/btrfs.c
index 8e9abed..19dd833 100644
--- a/daemon/btrfs.c
+++ b/daemon/btrfs.c
@@ -1117,3 +1117,36 @@ do_btrfs_qgroup_limit (const char *subvolume, int64_t
size)

   return 0;
 }
+
+int
+do_btrfs_qgroup_create (const char *qgroupid, const char *subvolume)
+{
+  const size_t MAX_ARGS = 64;
+  const char *argv[MAX_ARGS];
+  size_t i = 0;
+  CLEANUP_FREE char *subvolume_buf = NULL;
+  CLEANUP_FREE char *err = NULL;
+  CLEANUP_FREE char *out = NULL;
+  int r;
+
+  subvolume_buf = sysroot_path (subvolume);
+  if (subvolume_buf == NULL) {
+    reply_with_perror ("malloc");
+    return -1;
+  }
+
+  ADD_ARG (argv, i, str_btrfs);
+  ADD_ARG (argv, i, "qgroup");
+  ADD_ARG (argv, i, "create");
+  ADD_ARG (argv, i, qgroupid);
+  ADD_ARG (argv, i, subvolume_buf);
+  ADD_ARG (argv, i, NULL);
+
+  r = commandv (&out, &err, argv);
+  if (r == -1) {
+    reply_with_error ("%s: %s", subvolume, err);
+    return -1;
+  }
+
+  return 0;
+}
diff --git a/generator/actions.ml b/generator/actions.ml
index 2d8f0a6..3847fc3 100644
--- a/generator/actions.ml
+++ b/generator/actions.ml
@@ -12143,6 +12143,23 @@ Trash all qgroup numbers and scan the metadata again
with the current config." }
 Limit the size of a subvolume which's path is C<subvolume>.
C<size>
 can have suffix of G, M, or K. " };

+  { defaults with
+    name = "btrfs_qgroup_create";
+    style = RErr, [String "qgroupid"; Pathname
"subvolume"], [];
+    proc_nr = Some 430;
+    optional = Some "btrfs"; camel_name =
"BTRFSQgroupCreate";
+    tests = [
+      InitPartition, Always, TestRun (
+        [["mkfs_btrfs"; "/dev/sda1"; "";
""; "NOARG"; ""; "NOARG";
"NOARG"; ""; ""];
+         ["mount"; "/dev/sda1"; "/"];
+         ["btrfs_quota_enable"; "/"; "true"];
+         ["btrfs_subvolume_create"; "/sub1";
"NOARG"];
+         ["btrfs_qgroup_create"; "0/1000";
"/sub1"]]), [];
+    ];
+    shortdesc = "create a subvolume quota group";
+    longdesc = "\
+Create a quota group (qgroup) for subvolume at C<subvolume>." };
+
 ]

 (* Non-API meta-commands available only in guestfish.
diff --git a/src/MAX_PROC_NR b/src/MAX_PROC_NR
index 3560666..c15fb93 100644
--- a/src/MAX_PROC_NR
+++ b/src/MAX_PROC_NR
@@ -1 +1 @@
-429
+430
--
1.9.3