1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*4882a593Smuzhiyun #ifndef _UAPI_LINUX_FCNTL_H 3*4882a593Smuzhiyun #define _UAPI_LINUX_FCNTL_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <asm/fcntl.h> 6*4882a593Smuzhiyun #include <linux/openat2.h> 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #define F_SETLEASE (F_LINUX_SPECIFIC_BASE + 0) 9*4882a593Smuzhiyun #define F_GETLEASE (F_LINUX_SPECIFIC_BASE + 1) 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun /* 12*4882a593Smuzhiyun * Cancel a blocking posix lock; internal use only until we expose an 13*4882a593Smuzhiyun * asynchronous lock api to userspace: 14*4882a593Smuzhiyun */ 15*4882a593Smuzhiyun #define F_CANCELLK (F_LINUX_SPECIFIC_BASE + 5) 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun /* Create a file descriptor with FD_CLOEXEC set. */ 18*4882a593Smuzhiyun #define F_DUPFD_CLOEXEC (F_LINUX_SPECIFIC_BASE + 6) 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun /* 21*4882a593Smuzhiyun * Request nofications on a directory. 22*4882a593Smuzhiyun * See below for events that may be notified. 23*4882a593Smuzhiyun */ 24*4882a593Smuzhiyun #define F_NOTIFY (F_LINUX_SPECIFIC_BASE+2) 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun /* 27*4882a593Smuzhiyun * Set and get of pipe page size array 28*4882a593Smuzhiyun */ 29*4882a593Smuzhiyun #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7) 30*4882a593Smuzhiyun #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8) 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun /* 33*4882a593Smuzhiyun * Set/Get seals 34*4882a593Smuzhiyun */ 35*4882a593Smuzhiyun #define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9) 36*4882a593Smuzhiyun #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10) 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun /* 39*4882a593Smuzhiyun * Types of seals 40*4882a593Smuzhiyun */ 41*4882a593Smuzhiyun #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */ 42*4882a593Smuzhiyun #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */ 43*4882a593Smuzhiyun #define F_SEAL_GROW 0x0004 /* prevent file from growing */ 44*4882a593Smuzhiyun #define F_SEAL_WRITE 0x0008 /* prevent writes */ 45*4882a593Smuzhiyun #define F_SEAL_FUTURE_WRITE 0x0010 /* prevent future writes while mapped */ 46*4882a593Smuzhiyun /* (1U << 31) is reserved for signed error codes */ 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun /* 49*4882a593Smuzhiyun * Set/Get write life time hints. {GET,SET}_RW_HINT operate on the 50*4882a593Smuzhiyun * underlying inode, while {GET,SET}_FILE_RW_HINT operate only on 51*4882a593Smuzhiyun * the specific file. 52*4882a593Smuzhiyun */ 53*4882a593Smuzhiyun #define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11) 54*4882a593Smuzhiyun #define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12) 55*4882a593Smuzhiyun #define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13) 56*4882a593Smuzhiyun #define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14) 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun /* 59*4882a593Smuzhiyun * Valid hint values for F_{GET,SET}_RW_HINT. 0 is "not set", or can be 60*4882a593Smuzhiyun * used to clear any hints previously set. 61*4882a593Smuzhiyun */ 62*4882a593Smuzhiyun #define RWH_WRITE_LIFE_NOT_SET 0 63*4882a593Smuzhiyun #define RWH_WRITE_LIFE_NONE 1 64*4882a593Smuzhiyun #define RWH_WRITE_LIFE_SHORT 2 65*4882a593Smuzhiyun #define RWH_WRITE_LIFE_MEDIUM 3 66*4882a593Smuzhiyun #define RWH_WRITE_LIFE_LONG 4 67*4882a593Smuzhiyun #define RWH_WRITE_LIFE_EXTREME 5 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun /* 70*4882a593Smuzhiyun * The originally introduced spelling is remained from the first 71*4882a593Smuzhiyun * versions of the patch set that introduced the feature, see commit 72*4882a593Smuzhiyun * v4.13-rc1~212^2~51. 73*4882a593Smuzhiyun */ 74*4882a593Smuzhiyun #define RWF_WRITE_LIFE_NOT_SET RWH_WRITE_LIFE_NOT_SET 75*4882a593Smuzhiyun 76*4882a593Smuzhiyun /* 77*4882a593Smuzhiyun * Types of directory notifications that may be requested. 78*4882a593Smuzhiyun */ 79*4882a593Smuzhiyun #define DN_ACCESS 0x00000001 /* File accessed */ 80*4882a593Smuzhiyun #define DN_MODIFY 0x00000002 /* File modified */ 81*4882a593Smuzhiyun #define DN_CREATE 0x00000004 /* File created */ 82*4882a593Smuzhiyun #define DN_DELETE 0x00000008 /* File removed */ 83*4882a593Smuzhiyun #define DN_RENAME 0x00000010 /* File renamed */ 84*4882a593Smuzhiyun #define DN_ATTRIB 0x00000020 /* File changed attibutes */ 85*4882a593Smuzhiyun #define DN_MULTISHOT 0x80000000 /* Don't remove notifier */ 86*4882a593Smuzhiyun 87*4882a593Smuzhiyun /* 88*4882a593Smuzhiyun * The constants AT_REMOVEDIR and AT_EACCESS have the same value. AT_EACCESS is 89*4882a593Smuzhiyun * meaningful only to faccessat, while AT_REMOVEDIR is meaningful only to 90*4882a593Smuzhiyun * unlinkat. The two functions do completely different things and therefore, 91*4882a593Smuzhiyun * the flags can be allowed to overlap. For example, passing AT_REMOVEDIR to 92*4882a593Smuzhiyun * faccessat would be undefined behavior and thus treating it equivalent to 93*4882a593Smuzhiyun * AT_EACCESS is valid undefined behavior. 94*4882a593Smuzhiyun */ 95*4882a593Smuzhiyun #define AT_FDCWD -100 /* Special value used to indicate 96*4882a593Smuzhiyun openat should use the current 97*4882a593Smuzhiyun working directory. */ 98*4882a593Smuzhiyun #define AT_SYMLINK_NOFOLLOW 0x100 /* Do not follow symbolic links. */ 99*4882a593Smuzhiyun #define AT_EACCESS 0x200 /* Test access permitted for 100*4882a593Smuzhiyun effective IDs, not real IDs. */ 101*4882a593Smuzhiyun #define AT_REMOVEDIR 0x200 /* Remove directory instead of 102*4882a593Smuzhiyun unlinking file. */ 103*4882a593Smuzhiyun #define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */ 104*4882a593Smuzhiyun #define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */ 105*4882a593Smuzhiyun #define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */ 106*4882a593Smuzhiyun 107*4882a593Smuzhiyun #define AT_STATX_SYNC_TYPE 0x6000 /* Type of synchronisation required from statx() */ 108*4882a593Smuzhiyun #define AT_STATX_SYNC_AS_STAT 0x0000 /* - Do whatever stat() does */ 109*4882a593Smuzhiyun #define AT_STATX_FORCE_SYNC 0x2000 /* - Force the attributes to be sync'd with the server */ 110*4882a593Smuzhiyun #define AT_STATX_DONT_SYNC 0x4000 /* - Don't sync attributes with the server */ 111*4882a593Smuzhiyun 112*4882a593Smuzhiyun #define AT_RECURSIVE 0x8000 /* Apply to the entire subtree */ 113*4882a593Smuzhiyun 114*4882a593Smuzhiyun #endif /* _UAPI_LINUX_FCNTL_H */ 115