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 * Request nofications on a directory. 13 * See below for events that may be notified. 14 */ 15 #define F_NOTIFY (F_LINUX_SPECIFIC_BASE + 2) 16 17 #define F_DUPFD_QUERY (F_LINUX_SPECIFIC_BASE + 3) 18 19 /* 20 * Cancel a blocking posix lock; internal use only until we expose an 21 * asynchronous lock api to userspace: 22 */ 23 #define F_CANCELLK (F_LINUX_SPECIFIC_BASE + 5) 24 25 /* Create a file descriptor with FD_CLOEXEC set. */ 26 #define F_DUPFD_CLOEXEC (F_LINUX_SPECIFIC_BASE + 6) 27 28 /* 29 * Set and get of pipe page size array 30 */ 31 #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7) 32 #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8) 33 34 /* 35 * Set/Get seals 36 */ 37 #define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9) 38 #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10) 39 40 /* 41 * Types of seals 42 */ 43 #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */ 44 #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */ 45 #define F_SEAL_GROW 0x0004 /* prevent file from growing */ 46 #define F_SEAL_WRITE 0x0008 /* prevent writes */ 47 #define F_SEAL_FUTURE_WRITE 0x0010 /* prevent future writes while mapped */ 48 #define F_SEAL_EXEC 0x0020 /* prevent chmod modifying exec bits */ 49 /* (1U << 31) is reserved for signed error codes */ 50 51 /* 52 * Set/Get write life time hints. {GET,SET}_RW_HINT operate on the 53 * underlying inode, while {GET,SET}_FILE_RW_HINT operate only on 54 * the specific file. 55 */ 56 #define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11) 57 #define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12) 58 #define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13) 59 #define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14) 60 61 /* 62 * Valid hint values for F_{GET,SET}_RW_HINT. 0 is "not set", or can be 63 * used to clear any hints previously set. 64 */ 65 #define RWH_WRITE_LIFE_NOT_SET 0 66 #define RWH_WRITE_LIFE_NONE 1 67 #define RWH_WRITE_LIFE_SHORT 2 68 #define RWH_WRITE_LIFE_MEDIUM 3 69 #define RWH_WRITE_LIFE_LONG 4 70 #define RWH_WRITE_LIFE_EXTREME 5 71 72 /* 73 * The originally introduced spelling is remained from the first 74 * versions of the patch set that introduced the feature, see commit 75 * v4.13-rc1~212^2~51. 76 */ 77 #define RWF_WRITE_LIFE_NOT_SET RWH_WRITE_LIFE_NOT_SET 78 79 /* 80 * Types of directory notifications that may be requested. 81 */ 82 #define DN_ACCESS 0x00000001 /* File accessed */ 83 #define DN_MODIFY 0x00000002 /* File modified */ 84 #define DN_CREATE 0x00000004 /* File created */ 85 #define DN_DELETE 0x00000008 /* File removed */ 86 #define DN_RENAME 0x00000010 /* File renamed */ 87 #define DN_ATTRIB 0x00000020 /* File changed attibutes */ 88 #define DN_MULTISHOT 0x80000000 /* Don't remove notifier */ 89 90 /* 91 * The constants AT_REMOVEDIR and AT_EACCESS have the same value. AT_EACCESS is 92 * meaningful only to faccessat, while AT_REMOVEDIR is meaningful only to 93 * unlinkat. The two functions do completely different things and therefore, 94 * the flags can be allowed to overlap. For example, passing AT_REMOVEDIR to 95 * faccessat would be undefined behavior and thus treating it equivalent to 96 * AT_EACCESS is valid undefined behavior. 97 */ 98 #define AT_FDCWD -100 /* Special value used to indicate 99 openat should use the current 100 working directory. */ 101 #define AT_SYMLINK_NOFOLLOW 0x100 /* Do not follow symbolic links. */ 102 #define AT_EACCESS 0x200 /* Test access permitted for 103 effective IDs, not real IDs. */ 104 #define AT_REMOVEDIR 0x200 /* Remove directory instead of 105 unlinking file. */ 106 #define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */ 107 #define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */ 108 #define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */ 109 110 #define AT_STATX_SYNC_TYPE 0x6000 /* Type of synchronisation required from statx() */ 111 #define AT_STATX_SYNC_AS_STAT 0x0000 /* - Do whatever stat() does */ 112 #define AT_STATX_FORCE_SYNC 0x2000 /* - Force the attributes to be sync'd with the server */ 113 #define AT_STATX_DONT_SYNC 0x4000 /* - Don't sync attributes with the server */ 114 115 #define AT_RECURSIVE 0x8000 /* Apply to the entire subtree */ 116 117 /* Flags for name_to_handle_at(2). We reuse AT_ flag space to save bits... */ 118 #define AT_HANDLE_FID AT_REMOVEDIR /* file handle is needed to 119 compare object identity and may not 120 be usable to open_by_handle_at(2) */ 121 #if defined(__KERNEL__) 122 #define AT_GETATTR_NOSEC 0x80000000 123 #endif 124 125 #endif /* _UAPI_LINUX_FCNTL_H */ 126