1 #include "reiserfs.h" 2 #include <linux/capability.h> 3 #include <linux/errno.h> 4 #include <linux/fs.h> 5 #include <linux/pagemap.h> 6 #include <linux/xattr.h> 7 #include "xattr.h" 8 #include <linux/uaccess.h> 9 10 static int 11 trusted_get(const struct xattr_handler *handler, struct dentry *unused, 12 struct inode *inode, const char *name, void *buffer, size_t size) 13 { 14 if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode)) 15 return -EPERM; 16 17 return reiserfs_xattr_get(inode, xattr_full_name(handler, name), 18 buffer, size); 19 } 20 21 static int 22 trusted_set(const struct xattr_handler *handler, struct dentry *unused, 23 struct inode *inode, const char *name, const void *buffer, 24 size_t size, int flags) 25 { 26 if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode)) 27 return -EPERM; 28 29 return reiserfs_xattr_set(inode, 30 xattr_full_name(handler, name), 31 buffer, size, flags); 32 } 33 34 static bool trusted_list(struct dentry *dentry) 35 { 36 return capable(CAP_SYS_ADMIN) && !IS_PRIVATE(d_inode(dentry)); 37 } 38 39 const struct xattr_handler reiserfs_xattr_trusted_handler = { 40 .prefix = XATTR_TRUSTED_PREFIX, 41 .get = trusted_get, 42 .set = trusted_set, 43 .list = trusted_list, 44 }; 45