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 /* Was the file just created? */ 20 #define F_CREATED_QUERY (F_LINUX_SPECIFIC_BASE + 4) 21 22 /* 23 * Cancel a blocking posix lock; internal use only until we expose an 24 * asynchronous lock api to userspace: 25 */ 26 #define F_CANCELLK (F_LINUX_SPECIFIC_BASE + 5) 27 28 /* Create a file descriptor with FD_CLOEXEC set. */ 29 #define F_DUPFD_CLOEXEC (F_LINUX_SPECIFIC_BASE + 6) 30 31 /* 32 * Set and get of pipe page size array 33 */ 34 #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7) 35 #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8) 36 37 /* 38 * Set/Get seals 39 */ 40 #define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9) 41 #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10) 42 43 /* 44 * Types of seals 45 */ 46 #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */ 47 #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */ 48 #define F_SEAL_GROW 0x0004 /* prevent file from growing */ 49 #define F_SEAL_WRITE 0x0008 /* prevent writes */ 50 #define F_SEAL_FUTURE_WRITE 0x0010 /* prevent future writes while mapped */ 51 #define F_SEAL_EXEC 0x0020 /* prevent chmod modifying exec bits */ 52 /* (1U << 31) is reserved for signed error codes */ 53 54 /* 55 * Set/Get write life time hints. {GET,SET}_RW_HINT operate on the 56 * underlying inode, while {GET,SET}_FILE_RW_HINT operate only on 57 * the specific file. 58 */ 59 #define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11) 60 #define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12) 61 #define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13) 62 #define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14) 63 64 /* 65 * Valid hint values for F_{GET,SET}_RW_HINT. 0 is "not set", or can be 66 * used to clear any hints previously set. 67 */ 68 #define RWH_WRITE_LIFE_NOT_SET 0 69 #define RWH_WRITE_LIFE_NONE 1 70 #define RWH_WRITE_LIFE_SHORT 2 71 #define RWH_WRITE_LIFE_MEDIUM 3 72 #define RWH_WRITE_LIFE_LONG 4 73 #define RWH_WRITE_LIFE_EXTREME 5 74 75 /* 76 * The originally introduced spelling is remained from the first 77 * versions of the patch set that introduced the feature, see commit 78 * v4.13-rc1~212^2~51. 79 */ 80 #define RWF_WRITE_LIFE_NOT_SET RWH_WRITE_LIFE_NOT_SET 81 82 /* 83 * Types of directory notifications that may be requested. 84 */ 85 #define DN_ACCESS 0x00000001 /* File accessed */ 86 #define DN_MODIFY 0x00000002 /* File modified */ 87 #define DN_CREATE 0x00000004 /* File created */ 88 #define DN_DELETE 0x00000008 /* File removed */ 89 #define DN_RENAME 0x00000010 /* File renamed */ 90 #define DN_ATTRIB 0x00000020 /* File changed attibutes */ 91 #define DN_MULTISHOT 0x80000000 /* Don't remove notifier */ 92 93 /* 94 * The constants AT_REMOVEDIR and AT_EACCESS have the same value. AT_EACCESS is 95 * meaningful only to faccessat, while AT_REMOVEDIR is meaningful only to 96 * unlinkat. The two functions do completely different things and therefore, 97 * the flags can be allowed to overlap. For example, passing AT_REMOVEDIR to 98 * faccessat would be undefined behavior and thus treating it equivalent to 99 * AT_EACCESS is valid undefined behavior. 100 */ 101 #define AT_FDCWD -100 /* Special value used to indicate 102 openat should use the current 103 working directory. */ 104 #define AT_SYMLINK_NOFOLLOW 0x100 /* Do not follow symbolic links. */ 105 #define AT_EACCESS 0x200 /* Test access permitted for 106 effective IDs, not real IDs. */ 107 #define AT_REMOVEDIR 0x200 /* Remove directory instead of 108 unlinking file. */ 109 #define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */ 110 #define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */ 111 #define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */ 112 113 #define AT_STATX_SYNC_TYPE 0x6000 /* Type of synchronisation required from statx() */ 114 #define AT_STATX_SYNC_AS_STAT 0x0000 /* - Do whatever stat() does */ 115 #define AT_STATX_FORCE_SYNC 0x2000 /* - Force the attributes to be sync'd with the server */ 116 #define AT_STATX_DONT_SYNC 0x4000 /* - Don't sync attributes with the server */ 117 118 #define AT_RECURSIVE 0x8000 /* Apply to the entire subtree */ 119 120 /* Flags for name_to_handle_at(2). We reuse AT_ flag space to save bits... */ 121 #define AT_HANDLE_FID AT_REMOVEDIR /* file handle is needed to 122 compare object identity and may not 123 be usable to open_by_handle_at(2) */ 124 #if defined(__KERNEL__) 125 #define AT_GETATTR_NOSEC 0x80000000 126 #endif 127 128 #endif /* _UAPI_LINUX_FCNTL_H */ 129