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 #define F_SEAL_EXEC 0x0020 /* prevent chmod modifying exec bits */ 47 /* (1U << 31) is reserved for signed error codes */ 48 49 /* 50 * Set/Get write life time hints. {GET,SET}_RW_HINT operate on the 51 * underlying inode, while {GET,SET}_FILE_RW_HINT operate only on 52 * the specific file. 53 */ 54 #define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11) 55 #define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12) 56 #define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13) 57 #define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14) 58 59 /* 60 * Valid hint values for F_{GET,SET}_RW_HINT. 0 is "not set", or can be 61 * used to clear any hints previously set. 62 */ 63 #define RWH_WRITE_LIFE_NOT_SET 0 64 #define RWH_WRITE_LIFE_NONE 1 65 #define RWH_WRITE_LIFE_SHORT 2 66 #define RWH_WRITE_LIFE_MEDIUM 3 67 #define RWH_WRITE_LIFE_LONG 4 68 #define RWH_WRITE_LIFE_EXTREME 5 69 70 /* 71 * The originally introduced spelling is remained from the first 72 * versions of the patch set that introduced the feature, see commit 73 * v4.13-rc1~212^2~51. 74 */ 75 #define RWF_WRITE_LIFE_NOT_SET RWH_WRITE_LIFE_NOT_SET 76 77 /* 78 * Types of directory notifications that may be requested. 79 */ 80 #define DN_ACCESS 0x00000001 /* File accessed */ 81 #define DN_MODIFY 0x00000002 /* File modified */ 82 #define DN_CREATE 0x00000004 /* File created */ 83 #define DN_DELETE 0x00000008 /* File removed */ 84 #define DN_RENAME 0x00000010 /* File renamed */ 85 #define DN_ATTRIB 0x00000020 /* File changed attibutes */ 86 #define DN_MULTISHOT 0x80000000 /* Don't remove notifier */ 87 88 /* 89 * The constants AT_REMOVEDIR and AT_EACCESS have the same value. AT_EACCESS is 90 * meaningful only to faccessat, while AT_REMOVEDIR is meaningful only to 91 * unlinkat. The two functions do completely different things and therefore, 92 * the flags can be allowed to overlap. For example, passing AT_REMOVEDIR to 93 * faccessat would be undefined behavior and thus treating it equivalent to 94 * AT_EACCESS is valid undefined behavior. 95 */ 96 #define AT_FDCWD -100 /* Special value used to indicate 97 openat should use the current 98 working directory. */ 99 #define AT_SYMLINK_NOFOLLOW 0x100 /* Do not follow symbolic links. */ 100 #define AT_EACCESS 0x200 /* Test access permitted for 101 effective IDs, not real IDs. */ 102 #define AT_REMOVEDIR 0x200 /* Remove directory instead of 103 unlinking file. */ 104 #define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */ 105 #define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */ 106 #define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */ 107 108 #define AT_STATX_SYNC_TYPE 0x6000 /* Type of synchronisation required from statx() */ 109 #define AT_STATX_SYNC_AS_STAT 0x0000 /* - Do whatever stat() does */ 110 #define AT_STATX_FORCE_SYNC 0x2000 /* - Force the attributes to be sync'd with the server */ 111 #define AT_STATX_DONT_SYNC 0x4000 /* - Don't sync attributes with the server */ 112 113 #define AT_RECURSIVE 0x8000 /* Apply to the entire subtree */ 114 115 /* Flags for name_to_handle_at(2). We reuse AT_ flag space to save bits... */ 116 #define AT_HANDLE_FID AT_REMOVEDIR /* file handle is needed to 117 compare object identity and may not 118 be usable to open_by_handle_at(2) */ 119 120 #endif /* _UAPI_LINUX_FCNTL_H */ 121