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 #define F_SEAL_FUTURE_WRITE     0x0010  /* prevent future writes while mapped */
  45 /* (1U << 31) is reserved for signed error codes */
  46
  47 /*
  48  * Set/Get write life time hints. {GET,SET}_RW_HINT operate on the
  49  * underlying inode, while {GET,SET}_FILE_RW_HINT operate only on
  50  * the specific file.
  51  */
  52 #define F_GET_RW_HINT           (F_LINUX_SPECIFIC_BASE + 11)
  53 #define F_SET_RW_HINT           (F_LINUX_SPECIFIC_BASE + 12)
  54 #define F_GET_FILE_RW_HINT      (F_LINUX_SPECIFIC_BASE + 13)
  55 #define F_SET_FILE_RW_HINT      (F_LINUX_SPECIFIC_BASE + 14)
  56
  57 /*
  58  * Valid hint values for F_{GET,SET}_RW_HINT. 0 is "not set", or can be
  59  * used to clear any hints previously set.
  60  */
  61 #define RWF_WRITE_LIFE_NOT_SET  0
  62 #define RWH_WRITE_LIFE_NONE     1
  63 #define RWH_WRITE_LIFE_SHORT    2
  64 #define RWH_WRITE_LIFE_MEDIUM   3
  65 #define RWH_WRITE_LIFE_LONG     4
  66 #define RWH_WRITE_LIFE_EXTREME  5
  67
  68 /*
  69  * Types of directory notifications that may be requested.
  70  */
  71 #define DN_ACCESS       0x00000001      /* File accessed */
  72 #define DN_MODIFY       0x00000002      /* File modified */
  73 #define DN_CREATE       0x00000004      /* File created */
  74 #define DN_DELETE       0x00000008      /* File removed */
  75 #define DN_RENAME       0x00000010      /* File renamed */
  76 #define DN_ATTRIB       0x00000020      /* File changed attibutes */
  77 #define DN_MULTISHOT    0x80000000      /* Don't remove notifier */
  78
  79 #define AT_FDCWD                -100    /* Special value used to indicate
  80                                            openat should use the current
  81                                            working directory. */
  82 #define AT_SYMLINK_NOFOLLOW     0x100   /* Do not follow symbolic links.  */
  83 #define AT_REMOVEDIR            0x200   /* Remove directory instead of
  84                                            unlinking file.  */
  85 #define AT_SYMLINK_FOLLOW       0x400   /* Follow symbolic links.  */
  86 #define AT_NO_AUTOMOUNT         0x800   /* Suppress terminal automount traversal */
  87 #define AT_EMPTY_PATH           0x1000  /* Allow empty relative pathname */
  88
  89 #define AT_STATX_SYNC_TYPE      0x6000  /* Type of synchronisation required from statx() */
  90 #define AT_STATX_SYNC_AS_STAT   0x0000  /* - Do whatever stat() does */
  91 #define AT_STATX_FORCE_SYNC     0x2000  /* - Force the attributes to be sync'd with the server */
  92 #define AT_STATX_DONT_SYNC      0x4000  /* - Don't sync attributes with the server */
  93
  94
  95 #endif /* _UAPI_LINUX_FCNTL_H */