[PATCH 024/115] xfs: repair extended attributes

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From: Darrick J. Wong <djwong@xxxxxxxxxx>

Source kernel commit: e47dcf113ae348678143cc935a1183059c02c9ad

If the extended attributes look bad, try to sift through the rubble to
find whatever keys/values we can, stage a new attribute structure in a
temporary file and use the atomic extent swapping mechanism to commit
the results in bulk.

Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
 libxfs/xfs_attr.c      |    2 +-
 libxfs/xfs_attr.h      |    2 ++
 libxfs/xfs_da_format.h |    5 +++++
 3 files changed, 8 insertions(+), 1 deletion(-)


diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index cc291cf76..07f873927 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -1053,7 +1053,7 @@ xfs_attr_set(
  * External routines when attribute list is inside the inode
  *========================================================================*/
 
-static inline int xfs_attr_sf_totsize(struct xfs_inode *dp)
+int xfs_attr_sf_totsize(struct xfs_inode *dp)
 {
 	struct xfs_attr_sf_hdr *sf = dp->i_af.if_data;
 
diff --git a/libxfs/xfs_attr.h b/libxfs/xfs_attr.h
index 81be9b3e4..e4f550085 100644
--- a/libxfs/xfs_attr.h
+++ b/libxfs/xfs_attr.h
@@ -618,4 +618,6 @@ extern struct kmem_cache *xfs_attr_intent_cache;
 int __init xfs_attr_intent_init_cache(void);
 void xfs_attr_intent_destroy_cache(void);
 
+int xfs_attr_sf_totsize(struct xfs_inode *dp);
+
 #endif	/* __XFS_ATTR_H__ */
diff --git a/libxfs/xfs_da_format.h b/libxfs/xfs_da_format.h
index 060e5c96b..aac3fe039 100644
--- a/libxfs/xfs_da_format.h
+++ b/libxfs/xfs_da_format.h
@@ -721,6 +721,11 @@ struct xfs_attr3_leafblock {
 #define XFS_ATTR_INCOMPLETE	(1u << XFS_ATTR_INCOMPLETE_BIT)
 #define XFS_ATTR_NSP_ONDISK_MASK	(XFS_ATTR_ROOT | XFS_ATTR_SECURE)
 
+#define XFS_ATTR_NAMESPACE_STR \
+	{ XFS_ATTR_LOCAL,	"local" }, \
+	{ XFS_ATTR_ROOT,	"root" }, \
+	{ XFS_ATTR_SECURE,	"secure" }
+
 /*
  * Alignment for namelist and valuelist entries (since they are mixed
  * there can be only one alignment value)





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