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 #include <linux/openat2.h> 7 8 #define F_SETLEASE (F_LINUX_SPECIFIC_BASE + 0) 9 #define F_GETLEASE (F_LINUX_SPECIFIC_BASE + 1) 10 11 /* 12 * Cancel a blocking posix lock; internal use only until we expose an 13 * asynchronous lock api to userspace: 14 */ 15 #define F_CANCELLK (F_LINUX_SPECIFIC_BASE + 5) 16 17 /* Create a file descriptor with FD_CLOEXEC set. */ 18 #define F_DUPFD_CLOEXEC (F_LINUX_SPECIFIC_BASE + 6) 19 20 /* 21 * Request nofications on a directory. 22 * See below for events that may be notified. 23 */ 24 #define F_NOTIFY (F_LINUX_SPECIFIC_BASE+2) 25 26 /* 27 * Set and get of pipe page size array 28 */ 29 #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7) 30 #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8) 31 32 /* 33 * Set/Get seals 34 */ 35 #define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9) 36 #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10) 37 38 /* 39 * Types of seals 40 */ 41 #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */ 42 #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */ 43 #define F_SEAL_GROW 0x0004 /* prevent file from growing */ 44 #define F_SEAL_WRITE 0x0008 /* prevent writes */ 45 #define F_SEAL_FUTURE_WRITE 0x0010 /* prevent future writes while mapped */ 46 /* (1U << 31) is reserved for signed error codes */ 47 48 /* 49 * Set/Get write life time hints. {GET,SET}_RW_HINT operate on the 50 * underlying inode, while {GET,SET}_FILE_RW_HINT operate only on 51 * the specific file. 52 */ 53 #define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11) 54 #define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12) 55 #define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13) 56 #define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14) 57 58 /* 59 * Valid hint values for F_{GET,SET}_RW_HINT. 0 is "not set", or can be 60 * used to clear any hints previously set. 61 */ 62 #define RWH_WRITE_LIFE_NOT_SET 0 63 #define RWH_WRITE_LIFE_NONE 1 64 #define RWH_WRITE_LIFE_SHORT 2 65 #define RWH_WRITE_LIFE_MEDIUM 3 66 #define RWH_WRITE_LIFE_LONG 4 67 #define RWH_WRITE_LIFE_EXTREME 5 68 69 /* 70 * The originally introduced spelling is remained from the first 71 * versions of the patch set that introduced the feature, see commit 72 * v4.13-rc1~212^2~51. 73 */ 74 #define RWF_WRITE_LIFE_NOT_SET RWH_WRITE_LIFE_NOT_SET 75 76 /* 77 * Types of directory notifications that may be requested. 78 */ 79 #define DN_ACCESS 0x00000001 /* File accessed */ 80 #define DN_MODIFY 0x00000002 /* File modified */ 81 #define DN_CREATE 0x00000004 /* File created */ 82 #define DN_DELETE 0x00000008 /* File removed */ 83 #define DN_RENAME 0x00000010 /* File renamed */ 84 #define DN_ATTRIB 0x00000020 /* File changed attibutes */ 85 #define DN_MULTISHOT 0x80000000 /* Don't remove notifier */ 86 87 /* 88 * The constants AT_REMOVEDIR and AT_EACCESS have the same value. AT_EACCESS is 89 * meaningful only to faccessat, while AT_REMOVEDIR is meaningful only to 90 * unlinkat. The two functions do completely different things and therefore, 91 * the flags can be allowed to overlap. For example, passing AT_REMOVEDIR to 92 * faccessat would be undefined behavior and thus treating it equivalent to 93 * AT_EACCESS is valid undefined behavior. 94 */ 95 #define AT_FDCWD -100 /* Special value used to indicate 96 openat should use the current 97 working directory. */ 98 #define AT_SYMLINK_NOFOLLOW 0x100 /* Do not follow symbolic links. */ 99 #define AT_EACCESS 0x200 /* Test access permitted for 100 effective IDs, not real IDs. */ 101 #define AT_REMOVEDIR 0x200 /* Remove directory instead of 102 unlinking file. */ 103 #define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */ 104 #define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */ 105 #define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */ 106 107 #define AT_STATX_SYNC_TYPE 0x6000 /* Type of synchronisation required from statx() */ 108 #define AT_STATX_SYNC_AS_STAT 0x0000 /* - Do whatever stat() does */ 109 #define AT_STATX_FORCE_SYNC 0x2000 /* - Force the attributes to be sync'd with the server */ 110 #define AT_STATX_DONT_SYNC 0x4000 /* - Don't sync attributes with the server */ 111 112 #define AT_RECURSIVE 0x8000 /* Apply to the entire subtree */ 113 114 #endif /* _UAPI_LINUX_FCNTL_H */ 115