File util-linux-libmount-btrfs-subvolid-2.patch of Package util-linux.2662
From c6f9f229c57f48ff521c6901d6cc48c2474f8d67 Mon Sep 17 00:00:00 2001
From: Stanislav Brabec <sbrabec@suse.cz>
Date: Wed, 27 Jan 2016 21:37:29 +0100
Subject: [PATCH 2/2] libmount: code re-indentation
For easier review, the fix of libmount comes in two patches:
PATCH 1/2: libmount: run btrfs subvol checks for "subvolid" option
PATCH 2/2: code re-indentation
No code change is present in this patch.
Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>
---
libmount/src/tab.c | 87 +++++++++++++++++++++++++++---------------------------
1 file changed, 44 insertions(+), 43 deletions(-)
Index: util-linux-2.25/libmount/src/tab.c
===================================================================
--- util-linux-2.25.orig/libmount/src/tab.c
+++ util-linux-2.25/libmount/src/tab.c
@@ -1381,50 +1381,51 @@ struct libmnt_fs *mnt_table_get_fs_root(
DBG(BTRFS, ul_debug("lookup for FS root"));
if (mnt_fs_get_option(fs, "subvolid", &vol, &volsz)) {
- if (mnt_fs_get_option(fs, "subvol", &vol, &volsz)) {
- /* If fstab entry does not contain "subvol", we have to
- * check, whether btrfs has default subvolume defined.
- */
- uint64_t default_id;
- char *target;
- struct libmnt_fs *f;
- char default_id_str[sizeof(stringify_value(UINT64_MAX))];
-
- default_id = btrfs_get_default_subvol_id(mnt_fs_get_target(fs));
- if (default_id == UINT64_MAX)
- goto dflt;
-
- /* Volume has default subvolume. Check if it matches to
- * the one in mountinfo.
- *
- * Only kernel >= 4.2 reports subvolid. On older
- * kernels, there is no reasonable way to detect which
- * subvolume was mounted.
- */
- target = mnt_resolve_spec(mnt_fs_get_target(fs), tb->cache);
- if (!target)
- goto err;
-
- snprintf(default_id_str, sizeof(default_id_str), "%llu",
- (unsigned long long int) default_id);
-
- DBG(BTRFS, ul_debug("target=%s default subvolid=%s", target, default_id_str));
- f = mnt_table_find_target_with_option(tb, target,
- "subvolid", default_id_str,
- MNT_ITER_BACKWARD);
- if (!tb->cache)
- free(target);
- if (!f)
- goto dflt;
-
- /* Instead of set of BACKREF queries constructing
- * subvol path, use the one in mountinfo. Kernel does
- * the evaluation for us. */
- DBG(BTRFS, ul_debug("setting FS root: btrfs default subvolid = %s", default_id_str));
- if (mnt_fs_get_option(f, "subvol", &vol, &volsz))
- goto dflt;
- } else
- DBG(BTRFS, ul_debug("setting FS root: btrfs subvol"));
+ if (mnt_fs_get_option(fs, "subvol", &vol, &volsz)) {
+ /* If fstab entry does not contain "subvol", we
+ * have to check, whether btrfs has default
+ * subvolume defined.
+ */
+ uint64_t default_id;
+ char *target;
+ struct libmnt_fs *f;
+ char default_id_str[sizeof(stringify_value(UINT64_MAX))];
+
+ default_id = btrfs_get_default_subvol_id(mnt_fs_get_target(fs));
+ if (default_id == UINT64_MAX)
+ goto dflt;
+
+ /* Volume has default subvolume. Check if it
+ * matches to the one in mountinfo.
+ *
+ * Only kernel >= 4.2 reports subvolid. On older
+ * kernels, there is no reasonable way to detect
+ * which subvolume was mounted.
+ */
+ target = mnt_resolve_spec(mnt_fs_get_target(fs), tb->cache);
+ if (!target)
+ goto err;
+
+ snprintf(default_id_str, sizeof(default_id_str), "%llu",
+ (unsigned long long int) default_id);
+
+ DBG(BTRFS, ul_debug("target=%s default subvolid=%s", target, default_id_str));
+ f = mnt_table_find_target_with_option(tb, target,
+ "subvolid", default_id_str,
+ MNT_ITER_BACKWARD);
+ if (!tb->cache)
+ free(target);
+ if (!f)
+ goto dflt;
+
+ /* Instead of set of BACKREF queries constructing
+ * subvol path, use the one in mountinfo. Kernel
+ * does the evaluation for us. */
+ DBG(BTRFS, ul_debug("setting FS root: btrfs default subvolid = %s", default_id_str));
+ if (mnt_fs_get_option(f, "subvol", &vol, &volsz))
+ goto dflt;
+ } else
+ DBG(BTRFS, ul_debug("setting FS root: btrfs subvol"));
} else {
char *target;
struct libmnt_fs *f;
