[Libguestfs] [PATCH 1/2] NEW API: add new api btrfs-fsck

[Wanlong Gao]

Add the new API btrfs-fsck to check the btrfs filesystem.
Btrfs is currently under heavy development, and not suitable for
any uses other than benchmarking and review. But it'll be useful
in the near future.

Signed-off-by: Wanlong Gao <gaowanlong at cn.fujitsu.com>
---
 daemon/btrfs.c                 |   43 ++++++++++++++++++++++++++++++++++++++++
 generator/generator_actions.ml |   12 +++++++++++
 gobject/Makefile.inc           |    6 ++++--
 po/POTFILES                    |    1 +
 src/MAX_PROC_NR                |    2 +-
 5 files changed, 61 insertions(+), 3 deletions(-)

diff --git a/daemon/btrfs.c b/daemon/btrfs.c
index ab3babc..23958f6 100644
--- a/daemon/btrfs.c
+++ b/daemon/btrfs.c
@@ -619,3 +619,46 @@ do_btrfs_set_seeding (const char *device, int svalue)
   free (err);
   return r;
 }
+
+int
+do_btrfs_fsck (const char *device, int64_t superblock, int repair)
+{
+  char *err;
+  int r;
+  size_t i = 0;
+  const size_t MAX_ARGS = 64;
+  const char *argv[MAX_ARGS];
+  char super_s[64];
+
+  ADD_ARG (argv, i, "btrfsck");
+
+  /* Optional arguments. */
+  if (optargs_bitmask & GUESTFS_BTRFS_FSCK_SUPERBLOCK_BITMASK) {
+    if (superblock < 0) {
+      reply_with_error ("super block offset must be >= 0");
+      return -1;
+    }
+    snprintf (super_s, sizeof super_s, "%" PRIi64, superblock);
+    ADD_ARG (argv, i, "--super");
+    ADD_ARG (argv, i, super_s);
+  }
+
+  if (!(optargs_bitmask & GUESTFS_BTRFS_FSCK_REPAIR_BITMASK))
+    repair = 0;
+
+  if (repair)
+    ADD_ARG (argv, i, "--repair");
+
+  ADD_ARG (argv, i, device);
+  ADD_ARG (argv, i, NULL);
+
+  r = commandv (NULL, &err, argv);
+  if (r == -1) {
+    reply_with_error ("%s: %s", device, err);
+    free (err);
+    return -1;
+  }
+
+  free (err);
+  return 0;
+}
diff --git a/generator/generator_actions.ml b/generator/generator_actions.ml
index fc2df42..4e88704 100644
--- a/generator/generator_actions.ml
+++ b/generator/generator_actions.ml
@@ -7232,6 +7232,18 @@ If C<devices> is an empty list, this does nothing.");
 Enable or disable the seeding feature of a device that contains
 a btrfs filesystem.");
 
+  ("btrfs_fsck", (RErr, [Device "device"], [OInt64 "superblock"; OBool "repair"]), 332, [Optional "btrfs"],
+   [InitPartition, IfAvailable "btrfs", TestRun (
+     [["mkfs_btrfs"; "/dev/sda1"; ""; ""; "NOARG"; ""; "NOARG"; "NOARG"; ""; ""];
+      ["btrfs_fsck"; "/dev/sda1"; ""; ""]])],
+   "check a btrfs filesystem",
+   "\
+Used to check a btrfs filesystem, C<device> is the device file where the
+filesystem is stored.
+
+I<Note:> Btrfs is currently under heavy development, and not suitable for any
+uses other than benchmarking and review.");
+
 ]
 
 let all_functions = non_daemon_functions @ daemon_functions
diff --git a/gobject/Makefile.inc b/gobject/Makefile.inc
index c912fef..d4db407 100644
--- a/gobject/Makefile.inc
+++ b/gobject/Makefile.inc
@@ -60,7 +60,8 @@ guestfs_gobject_headers= \
   include/guestfs-gobject/optargs-ntfsfix.h \
   include/guestfs-gobject/optargs-ntfsclone_out.h \
   include/guestfs-gobject/optargs-mkfs_btrfs.h \
-  include/guestfs-gobject/optargs-set_e2attrs.h
+  include/guestfs-gobject/optargs-set_e2attrs.h \
+  include/guestfs-gobject/optargs-btrfs_fsck.h
 
 guestfs_gobject_sources= \
   src/session.c \
@@ -102,4 +103,5 @@ guestfs_gobject_sources= \
   src/optargs-ntfsfix.c \
   src/optargs-ntfsclone_out.c \
   src/optargs-mkfs_btrfs.c \
-  src/optargs-set_e2attrs.c
+  src/optargs-set_e2attrs.c \
+  src/optargs-btrfs_fsck.c
diff --git a/po/POTFILES b/po/POTFILES
index 2b4b586..9d3282e 100644
--- a/po/POTFILES
+++ b/po/POTFILES
@@ -134,6 +134,7 @@ fuse/guestmount.c
 gobject/src/optargs-add_domain.c
 gobject/src/optargs-add_drive_opts.c
 gobject/src/optargs-btrfs_filesystem_resize.c
+gobject/src/optargs-btrfs_fsck.c
 gobject/src/optargs-compress_device_out.c
 gobject/src/optargs-compress_out.c
 gobject/src/optargs-copy_device_to_device.c
diff --git a/src/MAX_PROC_NR b/src/MAX_PROC_NR
index ec6cab0..6f96da6 100644
--- a/src/MAX_PROC_NR
+++ b/src/MAX_PROC_NR
@@ -1 +1 @@
-331
+332
-- 
1.7.10