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Edit File : stat.h \| Size : 6.20 KB
/* 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* * - the datum will be synchronised to the server if AT_STATX_FORCE_SYNC is * set or if the datum is considered out of date, and * * - the field will be filled in and the bit will be set; * * - otherwise, if not requested, but available in approximate form without any * effort, it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 __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 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_DAX 0x00200000 / File is currently in DAX state / #endif / _LINUX_STAT_H */ Back

Edit File : stat.h | Size : 6.20 KB

/* 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	__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 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_DAX			0x00200000 /* File is currently in DAX state */

#endif /* _LINUX_STAT_H */

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