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 /* 29 * Mask of all supported fallocate modes. Only one can be set at a time. 30 * 31 * In addition to the mode bit, the mode argument can also encode flags. 32 * FALLOC_FL_KEEP_SIZE is the only supported flag so far. 33 */ 34 #define FALLOC_FL_MODE_MASK (FALLOC_FL_ALLOCATE_RANGE | \ 35 FALLOC_FL_PUNCH_HOLE | \ 36 FALLOC_FL_COLLAPSE_RANGE | \ 37 FALLOC_FL_ZERO_RANGE | \ 38 FALLOC_FL_INSERT_RANGE | \ 39 FALLOC_FL_UNSHARE_RANGE) 40 41 /* on ia32 l_start is on a 32-bit boundary */ 42 #if defined(CONFIG_X86_64) 43 struct space_resv_32 { 44 __s16 l_type; 45 __s16 l_whence; 46 __s64 l_start __attribute__((packed)); 47 /* len == 0 means until end of file */ 48 __s64 l_len __attribute__((packed)); 49 __s32 l_sysid; 50 __u32 l_pid; 51 __s32 l_pad[4]; /* reserve area */ 52 }; 53 54 #define FS_IOC_RESVSP_32 _IOW ('X', 40, struct space_resv_32) 55 #define FS_IOC_UNRESVSP_32 _IOW ('X', 41, struct space_resv_32) 56 #define FS_IOC_RESVSP64_32 _IOW ('X', 42, struct space_resv_32) 57 #define FS_IOC_UNRESVSP64_32 _IOW ('X', 43, struct space_resv_32) 58 #define FS_IOC_ZERO_RANGE_32 _IOW ('X', 57, struct space_resv_32) 59 60 #endif 61 62 #endif /* _FALLOC_H_ */ 63