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Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2
3#ifndef __STATMOUNT_H
4#define __STATMOUNT_H
5
6#include <stdint.h>
7#include <linux/mount.h>
8#include <asm/unistd.h>
9
10#ifndef __NR_statmount
11 #if defined __alpha__
12 #define __NR_statmount 567
13 #elif defined _MIPS_SIM
14 #if _MIPS_SIM == _MIPS_SIM_ABI32 /* o32 */
15 #define __NR_statmount 4457
16 #endif
17 #if _MIPS_SIM == _MIPS_SIM_NABI32 /* n32 */
18 #define __NR_statmount 6457
19 #endif
20 #if _MIPS_SIM == _MIPS_SIM_ABI64 /* n64 */
21 #define __NR_statmount 5457
22 #endif
23 #else
24 #define __NR_statmount 457
25 #endif
26#endif
27
28#ifndef __NR_listmount
29 #if defined __alpha__
30 #define __NR_listmount 568
31 #elif defined _MIPS_SIM
32 #if _MIPS_SIM == _MIPS_SIM_ABI32 /* o32 */
33 #define __NR_listmount 4458
34 #endif
35 #if _MIPS_SIM == _MIPS_SIM_NABI32 /* n32 */
36 #define __NR_listmount 6458
37 #endif
38 #if _MIPS_SIM == _MIPS_SIM_ABI64 /* n64 */
39 #define __NR_listmount 5458
40 #endif
41 #else
42 #define __NR_listmount 458
43 #endif
44#endif
45
46static inline int statmount(uint64_t mnt_id, uint64_t mnt_ns_id, uint64_t mask,
47 struct statmount *buf, size_t bufsize,
48 unsigned int flags)
49{
50 struct mnt_id_req req = {
51 .size = MNT_ID_REQ_SIZE_VER0,
52 .mnt_id = mnt_id,
53 .param = mask,
54 };
55
56 if (mnt_ns_id) {
57 req.size = MNT_ID_REQ_SIZE_VER1;
58 req.mnt_ns_id = mnt_ns_id;
59 }
60
61 return syscall(__NR_statmount, &req, buf, bufsize, flags);
62}
63
64static inline ssize_t listmount(uint64_t mnt_id, uint64_t mnt_ns_id,
65 uint64_t last_mnt_id, uint64_t list[], size_t num,
66 unsigned int flags)
67{
68 struct mnt_id_req req = {
69 .size = MNT_ID_REQ_SIZE_VER0,
70 .mnt_id = mnt_id,
71 .param = last_mnt_id,
72 };
73
74 if (mnt_ns_id) {
75 req.size = MNT_ID_REQ_SIZE_VER1;
76 req.mnt_ns_id = mnt_ns_id;
77 }
78
79 return syscall(__NR_listmount, &req, list, num, flags);
80}
81
82#endif /* __STATMOUNT_H */