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Edit File: stat.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _LINUX_STAT_H #define _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* * - the datum will be synchronised to the server if AT_STATX_FORCE_SYNC is * set or if the datum is considered out of date, and * * - the field will be filled in and the bit will be set; * * - otherwise, if not requested, but available in approximate form without any * effort, it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; __u32 stx_dio_mem_align; /* Memory buffer alignment for direct I/O */ __u32 stx_dio_offset_align; /* File offset alignment for direct I/O */ /* 0xa0 */ __u64 stx_subvol; /* Subvolume identifier */ __u32 stx_atomic_write_unit_min; /* Min atomic write unit in bytes */ __u32 stx_atomic_write_unit_max; /* Max atomic write unit in bytes */ /* 0xb0 */ __u32 stx_atomic_write_segments_max; /* Max atomic write segment count */ __u32 __spare1[1]; /* 0xb8 */ __u64 __spare3[9]; /* 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_DIOALIGN 0x00002000U /* Want/got direct I/O alignment info */ #define STATX_WRITE_ATOMIC 0x00010000U /* Want/got atomic_write_* fields */ #define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */ /* * 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 /* * 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 */ #define STATX_ATTR_WRITE_ATOMIC 0x00400000 /* File supports atomic write operations */ #endif /* _LINUX_STAT_H */