1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/*
* System Security Services Daemon. NSS client interface
*
* Copyright (C) Simo Sorce 2011
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* NSS interfaces to mmap cache */
#ifndef _NSS_MC_H_
#define _NSS_MC_H_
#include <stdint.h>
#include <stdbool.h>
#include <pwd.h>
#include <grp.h>
#include "config.h"
#if HAVE_PTHREAD
#include <pthread.h>
#endif
#include "util/mmap_cache.h"
#ifndef HAVE_ERRNO_T
#define HAVE_ERRNO_T
typedef int errno_t;
#endif
enum sss_mc_state {
UNINITIALIZED = 0,
INITIALIZED,
RECYCLED,
};
/* In the case this structure is extended, don't forget to update
* `SSS_CLI_MC_CTX_INITIALIZER` and `sss_nss_mc_destroy_ctx()`.
*/
struct sss_cli_mc_ctx {
enum sss_mc_state initialized;
#if HAVE_PTHREAD
pthread_mutex_t *mutex;
#endif
int fd;
ino_t fd_inode;
dev_t fd_device;
uint32_t seed; /* seed from the tables header */
void *mmap_base; /* base address of mmap */
size_t mmap_size; /* total size of mmap */
uint8_t *data_table; /* data table address (in mmap) */
uint32_t dt_size; /* size of data table */
uint32_t *hash_table; /* hash table address (in mmap) */
uint32_t ht_size; /* size of hash table */
uint32_t active_threads; /* count of threads which use memory cache */
};
#if HAVE_PTHREAD
#define SSS_CLI_MC_CTX_INITIALIZER(mtx) {UNINITIALIZED, (mtx), -1, 0, 0, 0, NULL, 0, NULL, 0, NULL, 0, 0}
#else
#define SSS_CLI_MC_CTX_INITIALIZER {UNINITIALIZED, -1, 0, 0, 0, NULL, 0, NULL, 0, NULL, 0, 0}
#endif
errno_t sss_nss_mc_get_ctx(const char *name, struct sss_cli_mc_ctx *ctx);
errno_t sss_nss_check_header(struct sss_cli_mc_ctx *ctx);
uint32_t sss_nss_mc_hash(struct sss_cli_mc_ctx *ctx,
const char *key, size_t len);
errno_t sss_nss_mc_get_record(struct sss_cli_mc_ctx *ctx,
uint32_t slot, struct sss_mc_rec **_rec);
errno_t sss_nss_str_ptr_from_buffer(char **str, void **cookie,
char *buf, size_t len);
uint32_t sss_nss_mc_next_slot_with_hash(struct sss_mc_rec *rec,
uint32_t hash);
/* passwd db */
errno_t sss_nss_mc_getpwnam(const char *name, size_t name_len,
struct passwd *result,
char *buffer, size_t buflen);
errno_t sss_nss_mc_getpwuid(uid_t uid,
struct passwd *result,
char *buffer, size_t buflen);
/* group db */
errno_t sss_nss_mc_getgrnam(const char *name, size_t name_len,
struct group *result,
char *buffer, size_t buflen);
errno_t sss_nss_mc_getgrgid(gid_t gid,
struct group *result,
char *buffer, size_t buflen);
/* initgroups db */
errno_t sss_nss_mc_initgroups_dyn(const char *name, size_t name_len,
gid_t group, long int *start, long int *size,
gid_t **groups, long int limit);
/* SID db */
errno_t sss_nss_mc_get_sid_by_id(uint32_t id, char **sid, uint32_t *type);
errno_t sss_nss_mc_get_sid_by_uid(uint32_t id, char **sid, uint32_t *type);
errno_t sss_nss_mc_get_sid_by_gid(uint32_t id, char **sid, uint32_t *type);
errno_t sss_nss_mc_get_id_by_sid(const char *sid, uint32_t *id, uint32_t *type);
#endif /* _NSS_MC_H_ */
|
