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// Copyright © Tavian Barnes <tavianator@tavianator.com>
// SPDX-License-Identifier: 0BSD
/**
* A caching wrapper for /etc/{passwd,group}.
*/
#ifndef BFS_PWCACHE_H
#define BFS_PWCACHE_H
#include <grp.h>
#include <pwd.h>
/**
* A user cache.
*/
struct bfs_users;
/**
* Create a user cache.
*
* @return
* A new user cache, or NULL on failure.
*/
struct bfs_users *bfs_users_new(void);
/**
* Get a user entry by name.
*
* @users
* The user cache.
* @name
* The username to look up.
* @return
* The matching user, or NULL if not found (errno == 0) or an error
* occurred (errno != 0).
*/
const struct passwd *bfs_getpwnam(struct bfs_users *users, const char *name);
/**
* Get a user entry by ID.
*
* @users
* The user cache.
* @uid
* The ID to look up.
* @return
* The matching user, or NULL if not found (errno == 0) or an error
* occurred (errno != 0).
*/
const struct passwd *bfs_getpwuid(struct bfs_users *users, uid_t uid);
/**
* Flush a user cache.
*
* @users
* The cache to flush.
*/
void bfs_users_flush(struct bfs_users *users);
/**
* Free a user cache.
*
* @users
* The user cache to free.
*/
void bfs_users_free(struct bfs_users *users);
/**
* A group cache.
*/
struct bfs_groups;
/**
* Create a group cache.
*
* @return
* A new group cache, or NULL on failure.
*/
struct bfs_groups *bfs_groups_new(void);
/**
* Get a group entry by name.
*
* @groups
* The group cache.
* @name
* The group name to look up.
* @return
* The matching group, or NULL if not found (errno == 0) or an error
* occurred (errno != 0).
*/
const struct group *bfs_getgrnam(struct bfs_groups *groups, const char *name);
/**
* Get a group entry by ID.
*
* @groups
* The group cache.
* @uid
* The ID to look up.
* @return
* The matching group, or NULL if not found (errno == 0) or an error
* occurred (errno != 0).
*/
const struct group *bfs_getgrgid(struct bfs_groups *groups, gid_t gid);
/**
* Flush a group cache.
*
* @groups
* The cache to flush.
*/
void bfs_groups_flush(struct bfs_groups *groups);
/**
* Free a group cache.
*
* @groups
* The group cache to free.
*/
void bfs_groups_free(struct bfs_groups *groups);
#endif // BFS_PWCACHE_H
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