src/basic/uid-range.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include <stdbool.h>
   5 #include <sys/types.h>
   6
   7 #include "macro.h"
   8
   9 typedef struct UidRangeEntry {
  10         uid_t start, nr;
  11 } UidRangeEntry;
  12
  13 typedef struct UidRange {
  14         UidRangeEntry *entries;
  15         size_t n_entries;
  16 } UidRange;
  17
  18 UidRange *uid_range_free(UidRange *range);
  19 DEFINE_TRIVIAL_CLEANUP_FUNC(UidRange*, uid_range_free);
  20
  21 int uid_range_add_internal(UidRange **range, uid_t start, uid_t nr, bool coalesce);
  22 static inline int uid_range_add(UidRange **range, uid_t start, uid_t nr) {
  23         return uid_range_add_internal(range, start, nr, true);
  24 }
  25 int uid_range_add_str(UidRange **range, const char *s);
  26
  27 int uid_range_next_lower(const UidRange *range, uid_t *uid);
  28
  29 bool uid_range_covers(const UidRange *range, uid_t start, uid_t nr);
  30 static inline bool uid_range_contains(const UidRange *range, uid_t uid) {
  31         return uid_range_covers(range, uid, 1);
  32 }
  33
  34 int uid_map_read_one(FILE *f, uid_t *ret_base, uid_t *ret_shift, uid_t *ret_range);
  35
  36 int uid_range_load_userns(UidRange **ret, const char *path);