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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */#ifndef _UAPI_LINUX_FCNTL_H#define _UAPI_LINUX_FCNTL_H
#include <asm/fcntl.h>#include <linux/openat2.h>#include <linux/types.h>
#define F_SETLEASE (F_LINUX_SPECIFIC_BASE + 0)#define F_GETLEASE (F_LINUX_SPECIFIC_BASE + 1)
/* * Request nofications on a directory. * See below for events that may be notified. */#define F_NOTIFY (F_LINUX_SPECIFIC_BASE + 2)
#define F_DUPFD_QUERY (F_LINUX_SPECIFIC_BASE + 3)
/* Was the file just created? */#define F_CREATED_QUERY (F_LINUX_SPECIFIC_BASE + 4)
/* * 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)
/* * 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
/* Set/Get delegations */#define F_GETDELEG (F_LINUX_SPECIFIC_BASE + 15)#define F_SETDELEG (F_LINUX_SPECIFIC_BASE + 16)
/* Argument structure for F_GETDELEG and F_SETDELEG */struct delegation { __u32 d_flags; /* Must be 0 */ __u16 d_type; /* F_RDLCK, F_WRLCK, F_UNLCK */ __u16 __pad; /* Must be 0 */};
/* * 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 */
/* Reserved kernel ranges [-100], [-10000, -40000]. */#define AT_FDCWD -100 /* Special value for dirfd used to indicate openat should use the current working directory. */
/* * The concept of process and threads in userland and the kernel is a confusing * one - within the kernel every thread is a 'task' with its own individual PID, * however from userland's point of view threads are grouped by a single PID, * which is that of the 'thread group leader', typically the first thread * spawned. * * To cut the Gideon knot, for internal kernel usage, we refer to * PIDFD_SELF_THREAD to refer to the current thread (or task from a kernel * perspective), and PIDFD_SELF_THREAD_GROUP to refer to the current thread * group leader... */#define PIDFD_SELF_THREAD -10000 /* Current thread. */#define PIDFD_SELF_THREAD_GROUP -10001 /* Current thread group leader. */
#define FD_PIDFS_ROOT -10002 /* Root of the pidfs filesystem */#define FD_NSFS_ROOT -10003 /* Root of the nsfs filesystem */#define FD_FAILFS_ROOT -10004 /* Root of the failfs filesystem */#define FD_INVALID -10009 /* Invalid file descriptor: -10000 - EBADF = -10009 */
/* Generic flags for the *at(2) family of syscalls. */
/* Reserved for per-syscall flags 0xff. */#define AT_SYMLINK_NOFOLLOW 0x100 /* Do not follow symbolic links. *//* Reserved for per-syscall flags 0x200 */#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 to operate on dirfd directly. *//* * These flags are currently statx(2)-specific, but they could be made generic * in the future and so they should not be used for other per-syscall flags. */#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 */
/* * Per-syscall flags for the *at(2) family of syscalls. * * These are flags that are so syscall-specific that a user passing these flags * to the wrong syscall is so "clearly wrong" that we can safely call such * usage "undefined behaviour". * * For example, 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. * * Note for implementers: When picking a new per-syscall AT_* flag, try to * reuse already existing flags first. This leaves us with as many unused bits * as possible, so we can use them for generic bits in the future if necessary. */
/* Flags for renameat2(2) (must match legacy RENAME_* flags). */#define AT_RENAME_NOREPLACE 0x0001#define AT_RENAME_EXCHANGE 0x0002#define AT_RENAME_WHITEOUT 0x0004
/* Flag for faccessat(2). */#define AT_EACCESS 0x200 /* Test access permitted for effective IDs, not real IDs. *//* Flag for unlinkat(2). */#define AT_REMOVEDIR 0x200 /* Remove directory instead of unlinking file. *//* Flags for name_to_handle_at(2). */#define AT_HANDLE_FID 0x200 /* File handle is needed to compare object identity and may not be usable with open_by_handle_at(2). */#define AT_HANDLE_MNT_ID_UNIQUE 0x001 /* Return the u64 unique mount ID. */#define AT_HANDLE_CONNECTABLE 0x002 /* Request a connectable file handle */
/* Flags for execveat2(2). */#define AT_EXECVE_CHECK 0x10000 /* Only perform a check if execution would be allowed. */
#endif /* _UAPI_LINUX_FCNTL_H */