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fcntl.h
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _LINUX_FCNTL_H #define _LINUX_FCNTL_H #include <asm/fcntl.h> #include <linux/openat2.h> #define F_SETLEASE (F_LINUX_SPECIFIC_BASE + 0) #define F_GETLEASE (F_LINUX_SPECIFIC_BASE + 1) /* * Cancel a blocking posix lock; internal use only until we expose an * asynchronous lock api to userspace: */ #define F_CANCELLK (F_LINUX_SPECIFIC_BASE + 5) /* Create a file descriptor with FD_CLOEXEC set. */ #define F_DUPFD_CLOEXEC (F_LINUX_SPECIFIC_BASE + 6) /* * Request nofications on a directory. * See below for events that may be notified. */ #define F_NOTIFY (F_LINUX_SPECIFIC_BASE+2) /* * Set and get of pipe page size array */ #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7) #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8) /* * Set/Get seals */ #define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9) #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10) /* * Types of seals */ #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */ #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */ #define F_SEAL_GROW 0x0004 /* prevent file from growing */ #define F_SEAL_WRITE 0x0008 /* prevent writes */ #define F_SEAL_FUTURE_WRITE 0x0010 /* prevent future writes while mapped */ #define F_SEAL_EXEC 0x0020 /* prevent chmod modifying exec bits */ /* (1U << 31) is reserved for signed error codes */ /* * Set/Get write life time hints. {GET,SET}_RW_HINT operate on the * underlying inode, while {GET,SET}_FILE_RW_HINT operate only on * the specific file. */ #define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11) #define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12) #define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13) #define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14) /* * Valid hint values for F_{GET,SET}_RW_HINT. 0 is "not set", or can be * used to clear any hints previously set. */ #define RWH_WRITE_LIFE_NOT_SET 0 #define RWH_WRITE_LIFE_NONE 1 #define RWH_WRITE_LIFE_SHORT 2 #define RWH_WRITE_LIFE_MEDIUM 3 #define RWH_WRITE_LIFE_LONG 4 #define RWH_WRITE_LIFE_EXTREME 5 /* * The originally introduced spelling is remained from the first * versions of the patch set that introduced the feature, see commit * v4.13-rc1~212^2~51. */ #define RWF_WRITE_LIFE_NOT_SET RWH_WRITE_LIFE_NOT_SET /* * Types of directory notifications that may be requested. */ #define DN_ACCESS 0x00000001 /* File accessed */ #define DN_MODIFY 0x00000002 /* File modified */ #define DN_CREATE 0x00000004 /* File created */ #define DN_DELETE 0x00000008 /* File removed */ #define DN_RENAME 0x00000010 /* File renamed */ #define DN_ATTRIB 0x00000020 /* File changed attibutes */ #define DN_MULTISHOT 0x80000000 /* Don't remove notifier */ /* * The constants AT_REMOVEDIR and AT_EACCESS have the same value. AT_EACCESS is * meaningful only to faccessat, while AT_REMOVEDIR is meaningful only to * unlinkat. The two functions do completely different things and therefore, * the flags can be allowed to overlap. For example, passing AT_REMOVEDIR to * faccessat would be undefined behavior and thus treating it equivalent to * AT_EACCESS is valid undefined behavior. */ #define AT_FDCWD -100 /* Special value used to indicate openat should use the current working directory. */ #define AT_SYMLINK_NOFOLLOW 0x100 /* Do not follow symbolic links. */ #define AT_EACCESS 0x200 /* Test access permitted for effective IDs, not real IDs. */ #define AT_REMOVEDIR 0x200 /* Remove directory instead of unlinking file. */ #define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */ #define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */ #define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */ #define AT_STATX_SYNC_TYPE 0x6000 /* Type of synchronisation required from statx() */ #define AT_STATX_SYNC_AS_STAT 0x0000 /* - Do whatever stat() does */ #define AT_STATX_FORCE_SYNC 0x2000 /* - Force the attributes to be sync'd with the server */ #define AT_STATX_DONT_SYNC 0x4000 /* - Don't sync attributes with the server */ #define AT_RECURSIVE 0x8000 /* Apply to the entire subtree */ /* Flags for name_to_handle_at(2). We reuse AT_ flag space to save bits... */ #define AT_HANDLE_FID AT_REMOVEDIR /* file handle is needed to compare object identity and may not be usable to open_by_handle_at(2) */ #endif /* _LINUX_FCNTL_H */