| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _FALLOC_H_ |
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| 3 | #define _FALLOC_H_ |
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| 4 | |
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| 5 | #include <uapi/linux/falloc.h> |
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| 6 | |
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| 7 | |
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| 8 | /* |
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| 9 | * Space reservation ioctls and argument structure |
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| 10 | * are designed to be compatible with the legacy XFS ioctls. |
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| 11 | */ |
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| 12 | struct space_resv { |
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| 13 | __s16 l_type; |
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| 14 | __s16 l_whence; |
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| 15 | __s64 l_start; |
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| 16 | __s64 l_len; /* len == 0 means until end of file */ |
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| 17 | __s32 l_sysid; |
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| 18 | __u32 l_pid; |
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| 19 | __s32 l_pad[4]; /* reserved area */ |
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| 20 | }; |
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| 21 | |
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| 22 | #define FS_IOC_RESVSP _IOW('X', 40, struct space_resv) |
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| 23 | #define FS_IOC_UNRESVSP _IOW('X', 41, struct space_resv) |
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| 24 | #define FS_IOC_RESVSP64 _IOW('X', 42, struct space_resv) |
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| 25 | #define FS_IOC_UNRESVSP64 _IOW('X', 43, struct space_resv) |
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| 26 | #define FS_IOC_ZERO_RANGE _IOW('X', 57, struct space_resv) |
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| 27 | |
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| 28 | /* |
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| 29 | * Mask of all supported fallocate modes. Only one can be set at a time. |
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| 30 | * |
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| 31 | * In addition to the mode bit, the mode argument can also encode flags. |
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| 32 | * FALLOC_FL_KEEP_SIZE is the only supported flag so far. |
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| 33 | */ |
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| 34 | #define FALLOC_FL_MODE_MASK (FALLOC_FL_ALLOCATE_RANGE | \ |
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| 35 | FALLOC_FL_PUNCH_HOLE | \ |
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| 36 | FALLOC_FL_COLLAPSE_RANGE | \ |
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| 37 | FALLOC_FL_ZERO_RANGE | \ |
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| 38 | FALLOC_FL_INSERT_RANGE | \ |
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| 39 | FALLOC_FL_UNSHARE_RANGE | \ |
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| 40 | FALLOC_FL_WRITE_ZEROES) |
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| 41 | |
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| 42 | /* on ia32 l_start is on a 32-bit boundary */ |
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| 43 | #if defined(CONFIG_X86_64) |
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| 44 | struct space_resv_32 { |
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| 45 | __s16 l_type; |
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| 46 | __s16 l_whence; |
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| 47 | __s64 l_start __attribute__((packed)); |
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| 48 | /* len == 0 means until end of file */ |
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| 49 | __s64 l_len __attribute__((packed)); |
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| 50 | __s32 l_sysid; |
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| 51 | __u32 l_pid; |
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| 52 | __s32 l_pad[4]; /* reserve area */ |
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| 53 | }; |
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| 54 | |
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| 55 | #define FS_IOC_RESVSP_32 _IOW ('X', 40, struct space_resv_32) |
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| 56 | #define FS_IOC_UNRESVSP_32 _IOW ('X', 41, struct space_resv_32) |
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| 57 | #define FS_IOC_RESVSP64_32 _IOW ('X', 42, struct space_resv_32) |
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| 58 | #define FS_IOC_UNRESVSP64_32 _IOW ('X', 43, struct space_resv_32) |
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| 59 | #define FS_IOC_ZERO_RANGE_32 _IOW ('X', 57, struct space_resv_32) |
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| 60 | |
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| 61 | #endif |
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| 62 | |
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| 63 | #endif /* _FALLOC_H_ */ |
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| 64 | |
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