#include <linux/reiserfs_fs.h> #include <linux/capability.h> #include <linux/errno.h> #include <linux/fs.h> #include <linux/pagemap.h> #include <linux/xattr.h> #include <linux/reiserfs_xattr.h> #include <asm/uaccess.h> static int trusted_get(struct inode *inode, const char *name, void *buffer, size_t size) { if (strlen(name) < sizeof(XATTR_TRUSTED_PREFIX)) return -EINVAL; if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode)) return -EPERM; return reiserfs_xattr_get(inode, name, buffer, size); } static int trusted_set(struct inode *inode, const char *name, const void *buffer, size_t size, int flags) { if (strlen(name) < sizeof(XATTR_TRUSTED_PREFIX)) return -EINVAL; if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode)) return -EPERM; return reiserfs_xattr_set(inode, name, buffer, size, flags); } static size_t trusted_list(struct inode *inode, char *list, size_t list_size, const char *name, size_t name_len) { const size_t len = name_len + 1; if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode)) return 0; if (list && len <= list_size) { memcpy(list, name, name_len); list[name_len] = '\0'; } return len; } struct xattr_handler reiserfs_xattr_trusted_handler = { .prefix = XATTR_TRUSTED_PREFIX, .get = trusted_get, .set = trusted_set, .list = trusted_list, };