src/shared/acl-util.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include "forward.h"
   5
   6 int fd_acl_make_read_only_fallback(int fd);
   7 int fd_acl_make_writable_fallback(int fd);
   8
   9 #if HAVE_ACL
  10 #include <acl/libacl.h> /* IWYU pragma: export */
  11 #include <sys/acl.h>    /* IWYU pragma: export */
  12
  13 int calc_acl_mask_if_needed(acl_t *acl_p);
  14 int add_base_acls_if_needed(acl_t *acl_p, const char *path);
  15 int acl_search_groups(const char* path, char ***ret_groups);
  16 int parse_acl(
  17                 const char *text,
  18                 acl_t *ret_acl_access,
  19                 acl_t *ret_acl_access_exec,
  20                 acl_t *ret_acl_default,
  21                 bool want_mask);
  22 int acls_for_file(const char *path, acl_type_t type, acl_t new, acl_t *ret);
  23 int fd_add_uid_acl_permission(int fd, uid_t uid, unsigned mask);
  24
  25 int fd_acl_make_read_only(int fd);
  26 int fd_acl_make_writable(int fd);
  27
  28 /* acl_free takes multiple argument types.
  29  * Multiple cleanup functions are necessary. */
  30 DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(acl_t, acl_free, NULL);
  31 #define acl_free_charp acl_free
  32 DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(char*, acl_free_charp, NULL);
  33 #define acl_free_uid_tp acl_free
  34 DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(uid_t*, acl_free_uid_tp, NULL);
  35 #define acl_free_gid_tp acl_free
  36 DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(gid_t*, acl_free_gid_tp, NULL);
  37
  38 #else
  39 #define ACL_READ    0x04
  40 #define ACL_WRITE   0x02
  41 #define ACL_EXECUTE 0x01
  42
  43 static inline int fd_add_uid_acl_permission(int fd, uid_t uid, unsigned mask) {
  44         return -EOPNOTSUPP;
  45 }
  46
  47 static inline int fd_acl_make_read_only(int fd) {
  48         return fd_acl_make_read_only_fallback(fd);
  49 }
  50
  51 static inline int fd_acl_make_writable(int fd) {
  52         return fd_acl_make_writable_fallback(fd);
  53 }
  54
  55 #endif