[linux-2.6-block.git] / include / linux / falloc.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _FALLOC_H_
#define _FALLOC_H_

#include <uapi/linux/falloc.h>


/*
 * Space reservation ioctls and argument structure
 * are designed to be compatible with the legacy XFS ioctls.
 */
struct space_resv {
	__s16		l_type;
	__s16		l_whence;
	__s64		l_start;
	__s64		l_len;		/* len == 0 means until end of file */
	__s32		l_sysid;
	__u32		l_pid;
	__s32		l_pad[4];	/* reserved area */
};

#define FS_IOC_RESVSP		_IOW('X', 40, struct space_resv)
#define FS_IOC_UNRESVSP		_IOW('X', 41, struct space_resv)
#define FS_IOC_RESVSP64		_IOW('X', 42, struct space_resv)
#define FS_IOC_UNRESVSP64	_IOW('X', 43, struct space_resv)
#define FS_IOC_ZERO_RANGE	_IOW('X', 57, struct space_resv)

/*
 * Mask of all supported fallocate modes.  Only one can be set at a time.
 *
 * In addition to the mode bit, the mode argument can also encode flags.
 * FALLOC_FL_KEEP_SIZE is the only supported flag so far.
 */
#define FALLOC_FL_MODE_MASK	(FALLOC_FL_ALLOCATE_RANGE |	\
				 FALLOC_FL_PUNCH_HOLE |		\
				 FALLOC_FL_COLLAPSE_RANGE |	\
				 FALLOC_FL_ZERO_RANGE |		\
				 FALLOC_FL_INSERT_RANGE |	\
				 FALLOC_FL_UNSHARE_RANGE)

/* on ia32 l_start is on a 32-bit boundary */
#if defined(CONFIG_X86_64)
struct space_resv_32 {
	__s16		l_type;
	__s16		l_whence;
	__s64		l_start	__attribute__((packed));
			/* len == 0 means until end of file */
	__s64		l_len __attribute__((packed));
	__s32		l_sysid;
	__u32		l_pid;
	__s32		l_pad[4];	/* reserve area */
};

#define FS_IOC_RESVSP_32	_IOW ('X', 40, struct space_resv_32)
#define FS_IOC_UNRESVSP_32	_IOW ('X', 41, struct space_resv_32)
#define FS_IOC_RESVSP64_32	_IOW ('X', 42, struct space_resv_32)
#define FS_IOC_UNRESVSP64_32	_IOW ('X', 43, struct space_resv_32)
#define FS_IOC_ZERO_RANGE_32	_IOW ('X', 57, struct space_resv_32)

#endif

#endif /* _FALLOC_H_ */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
97ac7350 AA	2	#ifndef _FALLOC_H_
	3	#define _FALLOC_H_
	4
607ca46e	5	#include <uapi/linux/falloc.h>
97ac7350	6
3e63cbb1 AJ	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)
837a6e7f	23	#define FS_IOC_UNRESVSP _IOW('X', 41, struct space_resv)
3e63cbb1	24	#define FS_IOC_RESVSP64 _IOW('X', 42, struct space_resv)
837a6e7f CH	25	#define FS_IOC_UNRESVSP64 _IOW('X', 43, struct space_resv)
837a6e7f CH	26	#define FS_IOC_ZERO_RANGE _IOW('X', 57, struct space_resv)
3e63cbb1	27
57413d8e CH	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)
dd46c787	40
011da44b AV	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
97eeb4d9 LT	54	#define FS_IOC_RESVSP_32 _IOW ('X', 40, struct space_resv_32)
97eeb4d9 LT	55	#define FS_IOC_UNRESVSP_32 _IOW ('X', 41, struct space_resv_32)
011da44b	56	#define FS_IOC_RESVSP64_32 _IOW ('X', 42, struct space_resv_32)
97eeb4d9 LT	57	#define FS_IOC_UNRESVSP64_32 _IOW ('X', 43, struct space_resv_32)
97eeb4d9 LT	58	#define FS_IOC_ZERO_RANGE_32 _IOW ('X', 57, struct space_resv_32)
011da44b	59
011da44b AV	60	#endif
011da44b AV	61
97ac7350	62	#endif /* _FALLOC_H_ */