blob: 49daab8cd123afee6c9bab752dd8328499b84e77 [file] [log] [blame]
#ifndef XFS_IO_STATX_H
#define XFS_IO_STATX_H
#include <unistd.h>
#include <sys/syscall.h>
#ifndef AT_EMPTY_PATH
#define AT_EMPTY_PATH 0x1000
#endif
#ifndef AT_STATX_SYNC_TYPE
#define AT_STATX_SYNC_TYPE 0x6000 /* Type of synchronisation required from statx() */
#define AT_STATX_SYNC_AS_STAT 0x0000 /* - Do whatever stat() does */
#define AT_STATX_FORCE_SYNC 0x2000 /* - Force the attributes to be sync'd with the server */
#define AT_STATX_DONT_SYNC 0x4000 /* - Don't sync attributes with the server */
#endif
#ifndef AT_NO_AUTOMOUNT
#define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */
#endif
#ifndef __NR_statx
# if defined(__i386__) || defined(__powerpc__)
# define __NR_statx 383
# elif defined (__x86_64__)
# if defined (__ILP32__)
# define __NR_statx (__X32_SYSCALL_BIT + 332)
# else
# define __NR_statx 332
# endif
# endif
#endif
#ifndef STATX_TYPE
/*
* 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 before (0..-999,999,999 if tv_sec is
* negative) or after (0..999,999,999 if tv_sec is positive) the tv_sec time.
*
* Note that if both tv_sec and tv_nsec are non-zero, then the two values must
* either be both positive or both negative.
*
* __reserved is held in case we need a yet finer resolution.
*/
struct statx_timestamp {
__s64 tv_sec;
__s32 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* set or if the datum is considered out of date, and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 __spare1[1];
/* 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 __spare2[14]; /* 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_ALL 0x00000fffU /* All currently supported flags */
#define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */
/*
* Attributes to be found in stx_attributes
*
* 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 generic FS_IOC_FLAGS
* semantically. Where possible, the numerical value is picked to correspond
* also.
*/
#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 */
#endif /* STATX_TYPE */
#endif /* XFS_IO_STATX_H */