mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2025-01-01 02:36:02 +00:00
0f9ca80fa4
Extend statx system call to return additional info for atomic write support support for a file. Helper function generic_fill_statx_atomic_writes() can be used by FSes to fill in the relevant statx fields. For now atomic_write_segments_max will always be 1, otherwise some rules would need to be imposed on iovec length and alignment, which we don't want now. Signed-off-by: Prasad Singamsetty <prasad.singamsetty@oracle.com> jpg: relocate bdev support to another patch Reviewed-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: John Garry <john.g.garry@oracle.com> Acked-by: Darrick J. Wong <djwong@kernel.org> Link: https://lore.kernel.org/r/20240620125359.2684798-5-john.g.garry@oracle.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_STAT_H
|
|
#define _LINUX_STAT_H
|
|
|
|
|
|
#include <asm/stat.h>
|
|
#include <uapi/linux/stat.h>
|
|
|
|
#define S_IRWXUGO (S_IRWXU|S_IRWXG|S_IRWXO)
|
|
#define S_IALLUGO (S_ISUID|S_ISGID|S_ISVTX|S_IRWXUGO)
|
|
#define S_IRUGO (S_IRUSR|S_IRGRP|S_IROTH)
|
|
#define S_IWUGO (S_IWUSR|S_IWGRP|S_IWOTH)
|
|
#define S_IXUGO (S_IXUSR|S_IXGRP|S_IXOTH)
|
|
|
|
#define UTIME_NOW ((1l << 30) - 1l)
|
|
#define UTIME_OMIT ((1l << 30) - 2l)
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/time.h>
|
|
#include <linux/uidgid.h>
|
|
|
|
struct kstat {
|
|
u32 result_mask; /* What fields the user got */
|
|
umode_t mode;
|
|
unsigned int nlink;
|
|
uint32_t blksize; /* Preferred I/O size */
|
|
u64 attributes;
|
|
u64 attributes_mask;
|
|
#define KSTAT_ATTR_FS_IOC_FLAGS \
|
|
(STATX_ATTR_COMPRESSED | \
|
|
STATX_ATTR_IMMUTABLE | \
|
|
STATX_ATTR_APPEND | \
|
|
STATX_ATTR_NODUMP | \
|
|
STATX_ATTR_ENCRYPTED | \
|
|
STATX_ATTR_VERITY \
|
|
)/* Attrs corresponding to FS_*_FL flags */
|
|
#define KSTAT_ATTR_VFS_FLAGS \
|
|
(STATX_ATTR_IMMUTABLE | \
|
|
STATX_ATTR_APPEND \
|
|
) /* Attrs corresponding to S_* flags that are enforced by the VFS */
|
|
u64 ino;
|
|
dev_t dev;
|
|
dev_t rdev;
|
|
kuid_t uid;
|
|
kgid_t gid;
|
|
loff_t size;
|
|
struct timespec64 atime;
|
|
struct timespec64 mtime;
|
|
struct timespec64 ctime;
|
|
struct timespec64 btime; /* File creation time */
|
|
u64 blocks;
|
|
u64 mnt_id;
|
|
u32 dio_mem_align;
|
|
u32 dio_offset_align;
|
|
u64 change_cookie;
|
|
u64 subvol;
|
|
u32 atomic_write_unit_min;
|
|
u32 atomic_write_unit_max;
|
|
u32 atomic_write_segments_max;
|
|
};
|
|
|
|
/* These definitions are internal to the kernel for now. Mainly used by nfsd. */
|
|
|
|
/* mask values */
|
|
#define STATX_CHANGE_COOKIE 0x40000000U /* Want/got stx_change_attr */
|
|
|
|
/* file attribute values */
|
|
#define STATX_ATTR_CHANGE_MONOTONIC 0x8000000000000000ULL /* version monotonically increases */
|
|
|
|
#endif
|