mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
72d1249e2f
STATX_ATTR_MOUNT_ROOT and STATX_ATTR_DAX got merged with the same value, so one of them needs fixing. Move STATX_ATTR_DAX. While we're in here, clarify the value-matching scheme for some of the attributes, and explain why the value for DAX does not match. Fixes:80340fe360
("statx: add mount_root") Fixes:712b2698e4
("fs/stat: Define DAX statx attribute") Link: https://lore.kernel.org/linux-fsdevel/7027520f-7c79-087e-1d00-743bdefa1a1e@redhat.com/ Link: https://lore.kernel.org/lkml/20201202214629.1563760-1-ira.weiny@intel.com/ Reported-by: David Howells <dhowells@redhat.com> Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: David Howells <dhowells@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Cc: <stable@vger.kernel.org> # 5.8 Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
192 lines
6.6 KiB
C
192 lines
6.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
|
#ifndef _UAPI_LINUX_STAT_H
|
|
#define _UAPI_LINUX_STAT_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
|
|
|
|
#define S_IFMT 00170000
|
|
#define S_IFSOCK 0140000
|
|
#define S_IFLNK 0120000
|
|
#define S_IFREG 0100000
|
|
#define S_IFBLK 0060000
|
|
#define S_IFDIR 0040000
|
|
#define S_IFCHR 0020000
|
|
#define S_IFIFO 0010000
|
|
#define S_ISUID 0004000
|
|
#define S_ISGID 0002000
|
|
#define S_ISVTX 0001000
|
|
|
|
#define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
|
|
#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
|
|
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
|
|
#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
|
|
#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
|
|
#define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
|
|
#define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
|
|
|
|
#define S_IRWXU 00700
|
|
#define S_IRUSR 00400
|
|
#define S_IWUSR 00200
|
|
#define S_IXUSR 00100
|
|
|
|
#define S_IRWXG 00070
|
|
#define S_IRGRP 00040
|
|
#define S_IWGRP 00020
|
|
#define S_IXGRP 00010
|
|
|
|
#define S_IRWXO 00007
|
|
#define S_IROTH 00004
|
|
#define S_IWOTH 00002
|
|
#define S_IXOTH 00001
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Timestamp structure for the timestamps in struct statx.
|
|
*
|
|
* tv_sec holds the number of seconds before (negative) or after (positive)
|
|
* 00:00:00 1st January 1970 UTC.
|
|
*
|
|
* tv_nsec holds a number of nanoseconds (0..999,999,999) after the tv_sec time.
|
|
*
|
|
* __reserved is held in case we need a yet finer resolution.
|
|
*/
|
|
struct statx_timestamp {
|
|
__s64 tv_sec;
|
|
__u32 tv_nsec;
|
|
__s32 __reserved;
|
|
};
|
|
|
|
/*
|
|
* Structures for the extended file attribute retrieval system call
|
|
* (statx()).
|
|
*
|
|
* The caller passes a mask of what they're specifically interested in as a
|
|
* parameter to statx(). What statx() actually got will be indicated in
|
|
* st_mask upon return.
|
|
*
|
|
* For each bit in the mask argument:
|
|
*
|
|
* - if the datum is not supported:
|
|
*
|
|
* - the bit will be cleared, and
|
|
*
|
|
* - the datum will be set to an appropriate fabricated value if one is
|
|
* available (eg. CIFS can take a default uid and gid), otherwise
|
|
*
|
|
* - the field will be cleared;
|
|
*
|
|
* - otherwise, if explicitly requested:
|
|
*
|
|
* - the datum will be synchronised to the server if AT_STATX_FORCE_SYNC is
|
|
* set or if the datum is considered out of date, and
|
|
*
|
|
* - the field will be filled in and the bit will be set;
|
|
*
|
|
* - otherwise, if not requested, but available in approximate form without any
|
|
* effort, it will be filled in anyway, and the bit will be set upon return
|
|
* (it might not be up to date, however, and no attempt will be made to
|
|
* synchronise the internal state first);
|
|
*
|
|
* - otherwise the field and the bit will be cleared before returning.
|
|
*
|
|
* Items in STATX_BASIC_STATS may be marked unavailable on return, but they
|
|
* will have values installed for compatibility purposes so that stat() and
|
|
* co. can be emulated in userspace.
|
|
*/
|
|
struct statx {
|
|
/* 0x00 */
|
|
__u32 stx_mask; /* What results were written [uncond] */
|
|
__u32 stx_blksize; /* Preferred general I/O size [uncond] */
|
|
__u64 stx_attributes; /* Flags conveying information about the file [uncond] */
|
|
/* 0x10 */
|
|
__u32 stx_nlink; /* Number of hard links */
|
|
__u32 stx_uid; /* User ID of owner */
|
|
__u32 stx_gid; /* Group ID of owner */
|
|
__u16 stx_mode; /* File mode */
|
|
__u16 __spare0[1];
|
|
/* 0x20 */
|
|
__u64 stx_ino; /* Inode number */
|
|
__u64 stx_size; /* File size */
|
|
__u64 stx_blocks; /* Number of 512-byte blocks allocated */
|
|
__u64 stx_attributes_mask; /* Mask to show what's supported in stx_attributes */
|
|
/* 0x40 */
|
|
struct statx_timestamp stx_atime; /* Last access time */
|
|
struct statx_timestamp stx_btime; /* File creation time */
|
|
struct statx_timestamp stx_ctime; /* Last attribute change time */
|
|
struct statx_timestamp stx_mtime; /* Last data modification time */
|
|
/* 0x80 */
|
|
__u32 stx_rdev_major; /* Device ID of special file [if bdev/cdev] */
|
|
__u32 stx_rdev_minor;
|
|
__u32 stx_dev_major; /* ID of device containing file [uncond] */
|
|
__u32 stx_dev_minor;
|
|
/* 0x90 */
|
|
__u64 stx_mnt_id;
|
|
__u64 __spare2;
|
|
/* 0xa0 */
|
|
__u64 __spare3[12]; /* Spare space for future expansion */
|
|
/* 0x100 */
|
|
};
|
|
|
|
/*
|
|
* Flags to be stx_mask
|
|
*
|
|
* Query request/result mask for statx() and struct statx::stx_mask.
|
|
*
|
|
* These bits should be set in the mask argument of statx() to request
|
|
* particular items when calling statx().
|
|
*/
|
|
#define STATX_TYPE 0x00000001U /* Want/got stx_mode & S_IFMT */
|
|
#define STATX_MODE 0x00000002U /* Want/got stx_mode & ~S_IFMT */
|
|
#define STATX_NLINK 0x00000004U /* Want/got stx_nlink */
|
|
#define STATX_UID 0x00000008U /* Want/got stx_uid */
|
|
#define STATX_GID 0x00000010U /* Want/got stx_gid */
|
|
#define STATX_ATIME 0x00000020U /* Want/got stx_atime */
|
|
#define STATX_MTIME 0x00000040U /* Want/got stx_mtime */
|
|
#define STATX_CTIME 0x00000080U /* Want/got stx_ctime */
|
|
#define STATX_INO 0x00000100U /* Want/got stx_ino */
|
|
#define STATX_SIZE 0x00000200U /* Want/got stx_size */
|
|
#define STATX_BLOCKS 0x00000400U /* Want/got stx_blocks */
|
|
#define STATX_BASIC_STATS 0x000007ffU /* The stuff in the normal stat struct */
|
|
#define STATX_BTIME 0x00000800U /* Want/got stx_btime */
|
|
#define STATX_MNT_ID 0x00001000U /* Got stx_mnt_id */
|
|
|
|
#define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */
|
|
|
|
#ifndef __KERNEL__
|
|
/*
|
|
* This is deprecated, and shall remain the same value in the future. To avoid
|
|
* confusion please use the equivalent (STATX_BASIC_STATS | STATX_BTIME)
|
|
* instead.
|
|
*/
|
|
#define STATX_ALL 0x00000fffU
|
|
#endif
|
|
|
|
/*
|
|
* Attributes to be found in stx_attributes and masked in stx_attributes_mask.
|
|
*
|
|
* These give information about the features or the state of a file that might
|
|
* be of use to ordinary userspace programs such as GUIs or ls rather than
|
|
* specialised tools.
|
|
*
|
|
* Note that the flags marked [I] correspond to the FS_IOC_SETFLAGS flags
|
|
* semantically. Where possible, the numerical value is picked to correspond
|
|
* also. Note that the DAX attribute indicates that the file is in the CPU
|
|
* direct access state. It does not correspond to the per-inode flag that
|
|
* some filesystems support.
|
|
*
|
|
*/
|
|
#define STATX_ATTR_COMPRESSED 0x00000004 /* [I] File is compressed by the fs */
|
|
#define STATX_ATTR_IMMUTABLE 0x00000010 /* [I] File is marked immutable */
|
|
#define STATX_ATTR_APPEND 0x00000020 /* [I] File is append-only */
|
|
#define STATX_ATTR_NODUMP 0x00000040 /* [I] File is not to be dumped */
|
|
#define STATX_ATTR_ENCRYPTED 0x00000800 /* [I] File requires key to decrypt in fs */
|
|
#define STATX_ATTR_AUTOMOUNT 0x00001000 /* Dir: Automount trigger */
|
|
#define STATX_ATTR_MOUNT_ROOT 0x00002000 /* Root of a mount */
|
|
#define STATX_ATTR_VERITY 0x00100000 /* [I] Verity protected file */
|
|
#define STATX_ATTR_DAX 0x00200000 /* File is currently in DAX state */
|
|
|
|
|
|
#endif /* _UAPI_LINUX_STAT_H */
|