1 // SPDX-License-Identifier: GPL-2.0
2 //
3 #ifndef __SELFTEST_OVERLAYFS_WRAPPERS_H__
4 #define __SELFTEST_OVERLAYFS_WRAPPERS_H__
5
6 #define _GNU_SOURCE
7
8 #include <linux/types.h>
9 #include <linux/mount.h>
10 #include <sys/syscall.h>
11
12 #ifndef STATX_MNT_ID_UNIQUE
13 #define STATX_MNT_ID_UNIQUE 0x00004000U /* Want/got extended stx_mount_id */
14 #endif
15
sys_fsopen(const char * fsname,unsigned int flags)16 static inline int sys_fsopen(const char *fsname, unsigned int flags)
17 {
18 return syscall(__NR_fsopen, fsname, flags);
19 }
20
sys_fsconfig(int fd,unsigned int cmd,const char * key,const char * value,int aux)21 static inline int sys_fsconfig(int fd, unsigned int cmd, const char *key,
22 const char *value, int aux)
23 {
24 return syscall(__NR_fsconfig, fd, cmd, key, value, aux);
25 }
26
sys_fsmount(int fd,unsigned int flags,unsigned int attr_flags)27 static inline int sys_fsmount(int fd, unsigned int flags,
28 unsigned int attr_flags)
29 {
30 return syscall(__NR_fsmount, fd, flags, attr_flags);
31 }
32
sys_mount(const char * src,const char * tgt,const char * fst,unsigned long flags,const void * data)33 static inline int sys_mount(const char *src, const char *tgt, const char *fst,
34 unsigned long flags, const void *data)
35 {
36 return syscall(__NR_mount, src, tgt, fst, flags, data);
37 }
38
39 #ifndef MOVE_MOUNT_F_EMPTY_PATH
40 #define MOVE_MOUNT_F_EMPTY_PATH 0x00000004 /* Empty from path permitted */
41 #endif
42
43 #ifndef MOVE_MOUNT_T_EMPTY_PATH
44 #define MOVE_MOUNT_T_EMPTY_PATH 0x00000040 /* Empty to path permitted */
45 #endif
46
47 #ifndef __NR_move_mount
48 #if defined __alpha__
49 #define __NR_move_mount 539
50 #elif defined _MIPS_SIM
51 #if _MIPS_SIM == _MIPS_SIM_ABI32 /* o32 */
52 #define __NR_move_mount 4429
53 #endif
54 #if _MIPS_SIM == _MIPS_SIM_NABI32 /* n32 */
55 #define __NR_move_mount 6429
56 #endif
57 #if _MIPS_SIM == _MIPS_SIM_ABI64 /* n64 */
58 #define __NR_move_mount 5429
59 #endif
60 #else
61 #define __NR_move_mount 429
62 #endif
63 #endif
64
sys_move_mount(int from_dfd,const char * from_pathname,int to_dfd,const char * to_pathname,unsigned int flags)65 static inline int sys_move_mount(int from_dfd, const char *from_pathname,
66 int to_dfd, const char *to_pathname,
67 unsigned int flags)
68 {
69 return syscall(__NR_move_mount, from_dfd, from_pathname, to_dfd,
70 to_pathname, flags);
71 }
72
73 #ifndef OPEN_TREE_CLONE
74 #define OPEN_TREE_CLONE 1
75 #endif
76
77 #ifndef OPEN_TREE_CLOEXEC
78 #define OPEN_TREE_CLOEXEC O_CLOEXEC
79 #endif
80
81 #ifndef AT_RECURSIVE
82 #define AT_RECURSIVE 0x8000 /* Apply to the entire subtree */
83 #endif
84
85 #ifndef __NR_open_tree
86 #if defined __alpha__
87 #define __NR_open_tree 538
88 #elif defined _MIPS_SIM
89 #if _MIPS_SIM == _MIPS_SIM_ABI32 /* o32 */
90 #define __NR_open_tree 4428
91 #endif
92 #if _MIPS_SIM == _MIPS_SIM_NABI32 /* n32 */
93 #define __NR_open_tree 6428
94 #endif
95 #if _MIPS_SIM == _MIPS_SIM_ABI64 /* n64 */
96 #define __NR_open_tree 5428
97 #endif
98 #else
99 #define __NR_open_tree 428
100 #endif
101 #endif
102
sys_open_tree(int dfd,const char * filename,unsigned int flags)103 static inline int sys_open_tree(int dfd, const char *filename, unsigned int flags)
104 {
105 return syscall(__NR_open_tree, dfd, filename, flags);
106 }
107
108 #endif
109