Btrfs: add support for inode properties

[cascardo/linux.git] / fs / btrfs / xattr.c

diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index 05740b9..4b33765 100644 (file)
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -27,6 +27,7 @@
 #include "transaction.h"
 #include "xattr.h"
 #include "disk-io.h"
+#include "props.h"
 
 
 ssize_t __btrfs_getxattr(struct inode *inode, const char *name,
@@ -331,7 +332,8 @@ static bool btrfs_is_valid_xattr(const char *name)
                        XATTR_SECURITY_PREFIX_LEN) ||
               !strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN) ||
               !strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) ||
-              !strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
+              !strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) ||
+               !strncmp(name, XATTR_BTRFS_PREFIX, XATTR_BTRFS_PREFIX_LEN);
 }
 
 ssize_t btrfs_getxattr(struct dentry *dentry, const char *name,
@@ -373,6 +375,10 @@ int btrfs_setxattr(struct dentry *dentry, const char *name, const void *value,
        if (!btrfs_is_valid_xattr(name))
                return -EOPNOTSUPP;
 
+       if (!strncmp(name, XATTR_BTRFS_PREFIX, XATTR_BTRFS_PREFIX_LEN))
+               return btrfs_set_prop(dentry->d_inode, name,
+                                     value, size, flags);
+
        if (size == 0)
                value = "";  /* empty EA, do not remove */
 
@@ -402,6 +408,10 @@ int btrfs_removexattr(struct dentry *dentry, const char *name)
        if (!btrfs_is_valid_xattr(name))
                return -EOPNOTSUPP;
 
+       if (!strncmp(name, XATTR_BTRFS_PREFIX, XATTR_BTRFS_PREFIX_LEN))
+               return btrfs_set_prop(dentry->d_inode, name,
+                                     NULL, 0, XATTR_REPLACE);
+
        return __btrfs_setxattr(NULL, dentry->d_inode, name, NULL, 0,
                                XATTR_REPLACE);
 }