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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <stdbool.h>
#include <sys/types.h>
#include "macro.h"
typedef struct UIDRangeEntry {
uid_t start, nr;
} UIDRangeEntry;
typedef struct UIDRange {
UIDRangeEntry *entries;
size_t n_entries;
} UIDRange;
UIDRange *uid_range_free(UIDRange *range);
DEFINE_TRIVIAL_CLEANUP_FUNC(UIDRange*, uid_range_free);
int uid_range_add_internal(UIDRange **range, uid_t start, uid_t nr, bool coalesce);
static inline int uid_range_add(UIDRange **range, uid_t start, uid_t nr) {
return uid_range_add_internal(range, start, nr, true);
}
int uid_range_add_str(UIDRange **range, const char *s);
int uid_range_next_lower(const UIDRange *range, uid_t *uid);
bool uid_range_covers(const UIDRange *range, uid_t start, uid_t nr);
static inline bool uid_range_contains(const UIDRange *range, uid_t uid) {
return uid_range_covers(range, uid, 1);
}
int uid_map_read_one(FILE *f, uid_t *ret_base, uid_t *ret_shift, uid_t *ret_range);
static inline size_t uid_range_entries(const UIDRange *range) {
return range ? range->n_entries : 0;
}
static inline unsigned uid_range_size(const UIDRange *range) {
if (!range)
return 0;
unsigned n = 0;
FOREACH_ARRAY(e, range->entries, range->n_entries)
n += e->nr;
return n;
}
static inline bool uid_range_is_empty(const UIDRange *range) {
if (!range)
return true;
FOREACH_ARRAY(e, range->entries, range->n_entries)
if (e->nr > 0)
return false;
return true;
}
bool uid_range_equal(const UIDRange *a, const UIDRange *b);
typedef enum UIDRangeUsernsMode {
UID_RANGE_USERNS_INSIDE,
UID_RANGE_USERNS_OUTSIDE,
GID_RANGE_USERNS_INSIDE,
GID_RANGE_USERNS_OUTSIDE,
_UID_RANGE_USERNS_MODE_MAX,
_UID_RANGE_USERNS_MODE_INVALID = -EINVAL,
} UIDRangeUsernsMode;
int uid_range_load_userns(const char *path, UIDRangeUsernsMode mode, UIDRange **ret);
int uid_range_load_userns_by_fd(int userns_fd, UIDRangeUsernsMode mode, UIDRange **ret);
bool uid_range_overlaps(const UIDRange *range, uid_t start, uid_t nr);
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