LXR linux/tools/include/uapi/linux/fcntl.h

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2#ifndef _UAPI_LINUX_FCNTL_H
   3#define _UAPI_LINUX_FCNTL_H
   4
   5#include <asm/fcntl.h>
   6
   7#define F_SETLEASE      (F_LINUX_SPECIFIC_BASE + 0)
   8#define F_GETLEASE      (F_LINUX_SPECIFIC_BASE + 1)
   9
  10/*
  11 * Cancel a blocking posix lock; internal use only until we expose an
  12 * asynchronous lock api to userspace:
  13 */
  14#define F_CANCELLK      (F_LINUX_SPECIFIC_BASE + 5)
  15
  16/* Create a file descriptor with FD_CLOEXEC set. */
  17#define F_DUPFD_CLOEXEC (F_LINUX_SPECIFIC_BASE + 6)
  18
  19/*
  20 * Request nofications on a directory.
  21 * See below for events that may be notified.
  22 */
  23#define F_NOTIFY        (F_LINUX_SPECIFIC_BASE+2)
  24
  25/*
  26 * Set and get of pipe page size array
  27 */
  28#define F_SETPIPE_SZ    (F_LINUX_SPECIFIC_BASE + 7)
  29#define F_GETPIPE_SZ    (F_LINUX_SPECIFIC_BASE + 8)
  30
  31/*
  32 * Set/Get seals
  33 */
  34#define F_ADD_SEALS     (F_LINUX_SPECIFIC_BASE + 9)
  35#define F_GET_SEALS     (F_LINUX_SPECIFIC_BASE + 10)
  36
  37/*
  38 * Types of seals
  39 */
  40#define F_SEAL_SEAL     0x0001  /* prevent further seals from being set */
  41#define F_SEAL_SHRINK   0x0002  /* prevent file from shrinking */
  42#define F_SEAL_GROW     0x0004  /* prevent file from growing */
  43#define F_SEAL_WRITE    0x0008  /* prevent writes */
  44/* (1U << 31) is reserved for signed error codes */
  45
  46/*
  47 * Set/Get write life time hints. {GET,SET}_RW_HINT operate on the
  48 * underlying inode, while {GET,SET}_FILE_RW_HINT operate only on
  49 * the specific file.
  50 */
  51#define F_GET_RW_HINT           (F_LINUX_SPECIFIC_BASE + 11)
  52#define F_SET_RW_HINT           (F_LINUX_SPECIFIC_BASE + 12)
  53#define F_GET_FILE_RW_HINT      (F_LINUX_SPECIFIC_BASE + 13)
  54#define F_SET_FILE_RW_HINT      (F_LINUX_SPECIFIC_BASE + 14)
  55
  56/*
  57 * Valid hint values for F_{GET,SET}_RW_HINT. 0 is "not set", or can be
  58 * used to clear any hints previously set.
  59 */
  60#define RWF_WRITE_LIFE_NOT_SET  0
  61#define RWH_WRITE_LIFE_NONE     1
  62#define RWH_WRITE_LIFE_SHORT    2
  63#define RWH_WRITE_LIFE_MEDIUM   3
  64#define RWH_WRITE_LIFE_LONG     4
  65#define RWH_WRITE_LIFE_EXTREME  5
  66
  67/*
  68 * Types of directory notifications that may be requested.
  69 */
  70#define DN_ACCESS       0x00000001      /* File accessed */
  71#define DN_MODIFY       0x00000002      /* File modified */
  72#define DN_CREATE       0x00000004      /* File created */
  73#define DN_DELETE       0x00000008      /* File removed */
  74#define DN_RENAME       0x00000010      /* File renamed */
  75#define DN_ATTRIB       0x00000020      /* File changed attibutes */
  76#define DN_MULTISHOT    0x80000000      /* Don't remove notifier */
  77
  78#define AT_FDCWD                -100    /* Special value used to indicate
  79                                           openat should use the current
  80                                           working directory. */
  81#define AT_SYMLINK_NOFOLLOW     0x100   /* Do not follow symbolic links.  */
  82#define AT_REMOVEDIR            0x200   /* Remove directory instead of
  83                                           unlinking file.  */
  84#define AT_SYMLINK_FOLLOW       0x400   /* Follow symbolic links.  */
  85#define AT_NO_AUTOMOUNT         0x800   /* Suppress terminal automount traversal */
  86#define AT_EMPTY_PATH           0x1000  /* Allow empty relative pathname */
  87
  88#define AT_STATX_SYNC_TYPE      0x6000  /* Type of synchronisation required from statx() */
  89#define AT_STATX_SYNC_AS_STAT   0x0000  /* - Do whatever stat() does */
  90#define AT_STATX_FORCE_SYNC     0x2000  /* - Force the attributes to be sync'd with the server */
  91#define AT_STATX_DONT_SYNC      0x4000  /* - Don't sync attributes with the server */
  92
  93#define AT_RECURSIVE            0x8000  /* Apply to the entire subtree */
  94
  95
  96#endif /* _UAPI_LINUX_FCNTL_H */
  97