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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2#ifndef _UAPI_LINUX_STAT_H3#define _UAPI_LINUX_STAT_H4 5#include <linux/types.h>6 7#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)8 9#define S_IFMT 0017000010#define S_IFSOCK 014000011#define S_IFLNK 012000012#define S_IFREG 010000013#define S_IFBLK 006000014#define S_IFDIR 004000015#define S_IFCHR 002000016#define S_IFIFO 001000017#define S_ISUID 000400018#define S_ISGID 000200019#define S_ISVTX 000100020 21#define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)22#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)23#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)24#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)25#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)26#define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)27#define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)28 29#define S_IRWXU 0070030#define S_IRUSR 0040031#define S_IWUSR 0020032#define S_IXUSR 0010033 34#define S_IRWXG 0007035#define S_IRGRP 0004036#define S_IWGRP 0002037#define S_IXGRP 0001038 39#define S_IRWXO 0000740#define S_IROTH 0000441#define S_IWOTH 0000242#define S_IXOTH 0000143 44#endif45 46/*47 * Timestamp structure for the timestamps in struct statx.48 *49 * tv_sec holds the number of seconds before (negative) or after (positive)50 * 00:00:00 1st January 1970 UTC.51 *52 * tv_nsec holds a number of nanoseconds (0..999,999,999) after the tv_sec time.53 *54 * __reserved is held in case we need a yet finer resolution.55 */56struct statx_timestamp {57 __s64 tv_sec;58 __u32 tv_nsec;59 __s32 __reserved;60};61 62/*63 * Structures for the extended file attribute retrieval system call64 * (statx()).65 *66 * The caller passes a mask of what they're specifically interested in as a67 * parameter to statx(). What statx() actually got will be indicated in68 * st_mask upon return.69 *70 * For each bit in the mask argument:71 *72 * - if the datum is not supported:73 *74 * - the bit will be cleared, and75 *76 * - the datum will be set to an appropriate fabricated value if one is77 * available (eg. CIFS can take a default uid and gid), otherwise78 *79 * - the field will be cleared;80 *81 * - otherwise, if explicitly requested:82 *83 * - the datum will be synchronised to the server if AT_STATX_FORCE_SYNC is84 * set or if the datum is considered out of date, and85 *86 * - the field will be filled in and the bit will be set;87 *88 * - otherwise, if not requested, but available in approximate form without any89 * effort, it will be filled in anyway, and the bit will be set upon return90 * (it might not be up to date, however, and no attempt will be made to91 * synchronise the internal state first);92 *93 * - otherwise the field and the bit will be cleared before returning.94 *95 * Items in STATX_BASIC_STATS may be marked unavailable on return, but they96 * will have values installed for compatibility purposes so that stat() and97 * co. can be emulated in userspace.98 */99struct statx {100 /* 0x00 */101 __u32 stx_mask; /* What results were written [uncond] */102 __u32 stx_blksize; /* Preferred general I/O size [uncond] */103 __u64 stx_attributes; /* Flags conveying information about the file [uncond] */104 /* 0x10 */105 __u32 stx_nlink; /* Number of hard links */106 __u32 stx_uid; /* User ID of owner */107 __u32 stx_gid; /* Group ID of owner */108 __u16 stx_mode; /* File mode */109 __u16 __spare0[1];110 /* 0x20 */111 __u64 stx_ino; /* Inode number */112 __u64 stx_size; /* File size */113 __u64 stx_blocks; /* Number of 512-byte blocks allocated */114 __u64 stx_attributes_mask; /* Mask to show what's supported in stx_attributes */115 /* 0x40 */116 struct statx_timestamp stx_atime; /* Last access time */117 struct statx_timestamp stx_btime; /* File creation time */118 struct statx_timestamp stx_ctime; /* Last attribute change time */119 struct statx_timestamp stx_mtime; /* Last data modification time */120 /* 0x80 */121 __u32 stx_rdev_major; /* Device ID of special file [if bdev/cdev] */122 __u32 stx_rdev_minor;123 __u32 stx_dev_major; /* ID of device containing file [uncond] */124 __u32 stx_dev_minor;125 /* 0x90 */126 __u64 stx_mnt_id;127 __u32 stx_dio_mem_align; /* Memory buffer alignment for direct I/O */128 __u32 stx_dio_offset_align; /* File offset alignment for direct I/O */129 /* 0xa0 */130 __u64 stx_subvol; /* Subvolume identifier */131 __u32 stx_atomic_write_unit_min; /* Min atomic write unit in bytes */132 __u32 stx_atomic_write_unit_max; /* Max atomic write unit in bytes */133 /* 0xb0 */134 __u32 stx_atomic_write_segments_max; /* Max atomic write segment count */135 __u32 __spare1[1];136 /* 0xb8 */137 __u64 __spare3[9]; /* Spare space for future expansion */138 /* 0x100 */139};140 141/*142 * Flags to be stx_mask143 *144 * Query request/result mask for statx() and struct statx::stx_mask.145 *146 * These bits should be set in the mask argument of statx() to request147 * particular items when calling statx().148 */149#define STATX_TYPE 0x00000001U /* Want/got stx_mode & S_IFMT */150#define STATX_MODE 0x00000002U /* Want/got stx_mode & ~S_IFMT */151#define STATX_NLINK 0x00000004U /* Want/got stx_nlink */152#define STATX_UID 0x00000008U /* Want/got stx_uid */153#define STATX_GID 0x00000010U /* Want/got stx_gid */154#define STATX_ATIME 0x00000020U /* Want/got stx_atime */155#define STATX_MTIME 0x00000040U /* Want/got stx_mtime */156#define STATX_CTIME 0x00000080U /* Want/got stx_ctime */157#define STATX_INO 0x00000100U /* Want/got stx_ino */158#define STATX_SIZE 0x00000200U /* Want/got stx_size */159#define STATX_BLOCKS 0x00000400U /* Want/got stx_blocks */160#define STATX_BASIC_STATS 0x000007ffU /* The stuff in the normal stat struct */161#define STATX_BTIME 0x00000800U /* Want/got stx_btime */162#define STATX_MNT_ID 0x00001000U /* Got stx_mnt_id */163#define STATX_DIOALIGN 0x00002000U /* Want/got direct I/O alignment info */164#define STATX_MNT_ID_UNIQUE 0x00004000U /* Want/got extended stx_mount_id */165#define STATX_SUBVOL 0x00008000U /* Want/got stx_subvol */166#define STATX_WRITE_ATOMIC 0x00010000U /* Want/got atomic_write_* fields */167 168#define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */169 170#ifndef __KERNEL__171/*172 * This is deprecated, and shall remain the same value in the future. To avoid173 * confusion please use the equivalent (STATX_BASIC_STATS | STATX_BTIME)174 * instead.175 */176#define STATX_ALL 0x00000fffU177#endif178 179/*180 * Attributes to be found in stx_attributes and masked in stx_attributes_mask.181 *182 * These give information about the features or the state of a file that might183 * be of use to ordinary userspace programs such as GUIs or ls rather than184 * specialised tools.185 *186 * Note that the flags marked [I] correspond to the FS_IOC_SETFLAGS flags187 * semantically. Where possible, the numerical value is picked to correspond188 * also. Note that the DAX attribute indicates that the file is in the CPU189 * direct access state. It does not correspond to the per-inode flag that190 * some filesystems support.191 *192 */193#define STATX_ATTR_COMPRESSED 0x00000004 /* [I] File is compressed by the fs */194#define STATX_ATTR_IMMUTABLE 0x00000010 /* [I] File is marked immutable */195#define STATX_ATTR_APPEND 0x00000020 /* [I] File is append-only */196#define STATX_ATTR_NODUMP 0x00000040 /* [I] File is not to be dumped */197#define STATX_ATTR_ENCRYPTED 0x00000800 /* [I] File requires key to decrypt in fs */198#define STATX_ATTR_AUTOMOUNT 0x00001000 /* Dir: Automount trigger */199#define STATX_ATTR_MOUNT_ROOT 0x00002000 /* Root of a mount */200#define STATX_ATTR_VERITY 0x00100000 /* [I] Verity protected file */201#define STATX_ATTR_DAX 0x00200000 /* File is currently in DAX state */202#define STATX_ATTR_WRITE_ATOMIC 0x00400000 /* File supports atomic write operations */203 204 205#endif /* _UAPI_LINUX_STAT_H */206