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/* 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_ */
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