1 #include "reiserfs.h" 2 #include <linux/errno.h> 3 #include <linux/fs.h> 4 #include <linux/pagemap.h> 5 #include <linux/xattr.h> 6 #include "xattr.h" 7 #include <linux/uaccess.h> 8 9 static int 10 user_get(const struct xattr_handler *handler, struct dentry *dentry, 11 const char *name, void *buffer, size_t size) 12 { 13 14 if (strlen(name) < sizeof(XATTR_USER_PREFIX)) 15 return -EINVAL; 16 if (!reiserfs_xattrs_user(dentry->d_sb)) 17 return -EOPNOTSUPP; 18 return reiserfs_xattr_get(d_inode(dentry), name, buffer, size); 19 } 20 21 static int 22 user_set(const struct xattr_handler *handler, struct dentry *dentry, 23 const char *name, const void *buffer, size_t size, int flags) 24 { 25 if (strlen(name) < sizeof(XATTR_USER_PREFIX)) 26 return -EINVAL; 27 28 if (!reiserfs_xattrs_user(dentry->d_sb)) 29 return -EOPNOTSUPP; 30 return reiserfs_xattr_set(d_inode(dentry), name, buffer, size, flags); 31 } 32 33 static size_t user_list(const struct xattr_handler *handler, 34 struct dentry *dentry, char *list, size_t list_size, 35 const char *name, size_t name_len) 36 { 37 const size_t len = name_len + 1; 38 39 if (!reiserfs_xattrs_user(dentry->d_sb)) 40 return 0; 41 if (list && len <= list_size) { 42 memcpy(list, name, name_len); 43 list[name_len] = '\0'; 44 } 45 return len; 46 } 47 48 const struct xattr_handler reiserfs_xattr_user_handler = { 49 .prefix = XATTR_USER_PREFIX, 50 .get = user_get, 51 .set = user_set, 52 .list = user_list, 53 }; 54