All callers of ceph_match_vxattr() determine what to pass as the
first argument by calling ceph_inode_vxattrs(inode). Just do that
inside ceph_match_vxattr() itself, changing it to take an inode
rather than the vxattr pointer as its first argument.
Also ensure the function works correctly for an empty table (i.e.,
containing only a terminating null entry).
Signed-off-by: Alex Elder <elder@xxxxxxxxxxxxx>
---
fs/ceph/xattr.c | 42 +++++++++++++++++++-----------------------
1 files changed, 19 insertions(+), 23 deletions(-)
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index b98b91d..bec9c30 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -126,14 +126,18 @@ static struct ceph_vxattr_cb
*ceph_inode_vxattrs(struct inode *inode)
return NULL;
}
-static struct ceph_vxattr_cb *ceph_match_vxattr(struct ceph_vxattr_cb
*vxattr,
+static struct ceph_vxattr_cb *ceph_match_vxattr(struct inode *inode,
const char *name)
{
- do {
- if (strcmp(vxattr->name, name) == 0)
- return vxattr;
- vxattr++;
- } while (vxattr->name);
+ struct ceph_vxattr_cb *vxattr = ceph_inode_vxattrs(inode);
+
+ if (vxattr)
+ while (vxattr->name) {
+ if (!strcmp(vxattr->name, name))
+ return vxattr;
+ vxattr++;
+ }
+
return NULL;
}
@@ -502,7 +506,6 @@ ssize_t ceph_getxattr(struct dentry *dentry, const
char *name, void *value,
{
struct inode *inode = dentry->d_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
- struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode);
int err;
struct ceph_inode_xattr *xattr;
struct ceph_vxattr_cb *vxattr = NULL;
@@ -511,8 +514,7 @@ ssize_t ceph_getxattr(struct dentry *dentry, const
char *name, void *value,
return -ENODATA;
/* let's see if a virtual xattr was requested */
- if (vxattrs)
- vxattr = ceph_match_vxattr(vxattrs, name);
+ vxattr = ceph_match_vxattr(inode, name);
spin_lock(&ci->i_ceph_lock);
dout("getxattr %p ver=%lld index_ver=%lld\n", inode,
@@ -698,8 +700,8 @@ int ceph_setxattr(struct dentry *dentry, const char
*name,
const void *value, size_t size, int flags)
{
struct inode *inode = dentry->d_inode;
+ struct ceph_vxattr_cb *vxattr;
struct ceph_inode_info *ci = ceph_inode(inode);
- struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode);
int err;
int name_len = strlen(name);
int val_len = size;
@@ -716,12 +718,9 @@ int ceph_setxattr(struct dentry *dentry, const char
*name,
if (!ceph_is_valid_xattr(name))
return -EOPNOTSUPP;
- if (vxattrs) {
- struct ceph_vxattr_cb *vxattr =
- ceph_match_vxattr(vxattrs, name);
- if (vxattr && vxattr->readonly)
- return -EOPNOTSUPP;
- }
+ vxattr = ceph_match_vxattr(inode, name);
+ if (vxattr && vxattr->readonly)
+ return -EOPNOTSUPP;
/* preallocate memory for xattr name, value, index node */
err = -ENOMEM;
@@ -814,8 +813,8 @@ static int ceph_send_removexattr(struct dentry
*dentry, const char *name)
int ceph_removexattr(struct dentry *dentry, const char *name)
{
struct inode *inode = dentry->d_inode;
+ struct ceph_vxattr_cb *vxattr;
struct ceph_inode_info *ci = ceph_inode(inode);
- struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode);
int issued;
int err;
int dirty;
@@ -826,12 +825,9 @@ int ceph_removexattr(struct dentry *dentry, const
char *name)
if (!ceph_is_valid_xattr(name))
return -EOPNOTSUPP;
- if (vxattrs) {
- struct ceph_vxattr_cb *vxattr =
- ceph_match_vxattr(vxattrs, name);
- if (vxattr && vxattr->readonly)
- return -EOPNOTSUPP;
- }
+ vxattr = ceph_match_vxattr(inode, name);
+ if (vxattr && vxattr->readonly)
+ return -EOPNOTSUPP;
spin_lock(&ci->i_ceph_lock);
__build_xattrs(inode);
--
1.7.5.4
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