1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _FALLOC_H_
3 #define _FALLOC_H_
4
5 #include <uapi/linux/falloc.h>
6
7
8 /*
9 * Space reservation ioctls and argument structure
10 * are designed to be compatible with the legacy XFS ioctls.
11 */
12 struct space_resv {
13 __s16 l_type;
14 __s16 l_whence;
15 __s64 l_start;
16 __s64 l_len; /* len == 0 means until end of file */
17 __s32 l_sysid;
18 __u32 l_pid;
19 __s32 l_pad[4]; /* reserved area */
20 };
21
22 #define FS_IOC_RESVSP _IOW('X', 40, struct space_resv)
23 #define FS_IOC_UNRESVSP _IOW('X', 41, struct space_resv)
24 #define FS_IOC_RESVSP64 _IOW('X', 42, struct space_resv)
25 #define FS_IOC_UNRESVSP64 _IOW('X', 43, struct space_resv)
26 #define FS_IOC_ZERO_RANGE _IOW('X', 57, struct space_resv)
27
28 #define FALLOC_FL_SUPPORTED_MASK (FALLOC_FL_KEEP_SIZE | \
29 FALLOC_FL_PUNCH_HOLE | \
30 FALLOC_FL_COLLAPSE_RANGE | \
31 FALLOC_FL_ZERO_RANGE | \
32 FALLOC_FL_INSERT_RANGE | \
33 FALLOC_FL_UNSHARE_RANGE)
34
35 /* on ia32 l_start is on a 32-bit boundary */
36 #if defined(CONFIG_X86_64)
37 struct space_resv_32 {
38 __s16 l_type;
39 __s16 l_whence;
40 __s64 l_start __attribute__((packed));
41 /* len == 0 means until end of file */
42 __s64 l_len __attribute__((packed));
43 __s32 l_sysid;
44 __u32 l_pid;
45 __s32 l_pad[4]; /* reserve area */
46 };
47
48 #define FS_IOC_RESVSP_32 _IOW ('X', 40, struct space_resv_32)
49 #define FS_IOC_UNRESVSP_32 _IOW ('X', 41, struct space_resv_32)
50 #define FS_IOC_RESVSP64_32 _IOW ('X', 42, struct space_resv_32)
51 #define FS_IOC_UNRESVSP64_32 _IOW ('X', 43, struct space_resv_32)
52 #define FS_IOC_ZERO_RANGE_32 _IOW ('X', 57, struct space_resv_32)
53
54 #endif
55
56 #endif /* _FALLOC_H_ */
57
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