| // SPDX-License-Identifier: GPL-2.0 |
| #include "reiserfs.h" |
| #include <linux/capability.h> |
| #include <linux/errno.h> |
| #include <linux/fs.h> |
| #include <linux/pagemap.h> |
| #include <linux/xattr.h> |
| #include "xattr.h" |
| #include <linux/uaccess.h> |
| |
| static int |
| trusted_get(const struct xattr_handler *handler, struct dentry *unused, |
| struct inode *inode, const char *name, void *buffer, size_t size) |
| { |
| if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode)) |
| return -EPERM; |
| |
| return reiserfs_xattr_get(inode, xattr_full_name(handler, name), |
| buffer, size); |
| } |
| |
| static int |
| trusted_set(const struct xattr_handler *handler, struct dentry *unused, |
| struct inode *inode, const char *name, const void *buffer, |
| size_t size, int flags) |
| { |
| if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode)) |
| return -EPERM; |
| |
| return reiserfs_xattr_set(inode, |
| xattr_full_name(handler, name), |
| buffer, size, flags); |
| } |
| |
| static bool trusted_list(struct dentry *dentry) |
| { |
| return capable(CAP_SYS_ADMIN) && !IS_PRIVATE(d_inode(dentry)); |
| } |
| |
| const struct xattr_handler reiserfs_xattr_trusted_handler = { |
| .prefix = XATTR_TRUSTED_PREFIX, |
| .get = trusted_get, |
| .set = trusted_set, |
| .list = trusted_list, |
| }; |