1 /* 2 * Copyright 2002-2012 Haiku, Inc. All Rights Reserved. 3 * Distributed under the terms of the MIT License. 4 */ 5 #ifndef _FCNTL_H 6 #define _FCNTL_H 7 8 9 #include <sys/types.h> 10 #include <sys/stat.h> 11 #include <unistd.h> 12 13 14 /* commands that can be passed to fcntl() */ 15 #define F_DUPFD 0x0001 /* duplicate fd */ 16 #define F_GETFD 0x0002 /* get fd flags */ 17 #define F_SETFD 0x0004 /* set fd flags */ 18 #define F_GETFL 0x0008 /* get file status flags and access mode */ 19 #define F_SETFL 0x0010 /* set file status flags */ 20 #define F_GETLK 0x0020 /* get locking information */ 21 #define F_SETLK 0x0080 /* set locking information */ 22 #define F_SETLKW 0x0100 /* as above, but waits if blocked */ 23 #define F_DUPFD_CLOEXEC 0x0200 /* duplicate fd with close on exec set */ 24 25 /* advisory locking types */ 26 #define F_RDLCK 0x0040 /* read or shared lock */ 27 #define F_UNLCK 0x0200 /* unlock */ 28 #define F_WRLCK 0x0400 /* write or exclusive lock */ 29 30 /* file descriptor flags for fcntl() */ 31 #define FD_CLOEXEC 1 /* close on exec */ 32 33 /* file access modes for open() */ 34 #define O_RDONLY 0x0000 /* read only */ 35 #define O_WRONLY 0x0001 /* write only */ 36 #define O_RDWR 0x0002 /* read and write */ 37 #define O_ACCMODE 0x0003 /* mask to get the access modes above */ 38 #define O_RWMASK O_ACCMODE 39 40 /* flags for open() */ 41 #define O_EXCL 0x0100 /* exclusive creat */ 42 #define O_CREAT 0x0200 /* create and open file */ 43 #define O_TRUNC 0x0400 /* open with truncation */ 44 #define O_NOCTTY 0x1000 /* don't make tty the controlling tty */ 45 #define O_NOTRAVERSE 0x2000 /* do not traverse leaf link */ 46 47 /* flags for open() and fcntl() */ 48 #define O_CLOEXEC 0x00000040 /* close on exec */ 49 #define O_NONBLOCK 0x00000080 /* non blocking io */ 50 #define O_NDELAY O_NONBLOCK 51 #define O_APPEND 0x00000800 /* to end of file */ 52 #define O_SYNC 0x00010000 /* write synchronized I/O file integrity */ 53 #define O_RSYNC 0x00020000 /* read synchronized I/O file integrity */ 54 #define O_DSYNC 0x00040000 /* write synchronized I/O data integrity */ 55 #define O_NOFOLLOW 0x00080000 /* fail on symlinks */ 56 #define O_DIRECT 0x00100000 /* do not use the file system cache if */ 57 /* possible */ 58 #define O_NOCACHE O_DIRECT 59 #define O_DIRECTORY 0x00200000 /* fail if not a directory */ 60 61 /* flags for the *at() functions */ 62 #define AT_FDCWD (-100) /* CWD FD for the *at() functions */ 63 64 #define AT_SYMLINK_NOFOLLOW 0x01 /* fstatat(), fchmodat(), fchownat(), 65 utimensat() */ 66 #define AT_SYMLINK_FOLLOW 0x02 /* linkat() */ 67 #define AT_REMOVEDIR 0x04 /* unlinkat() */ 68 #define AT_EACCESS 0x08 /* faccessat() */ 69 70 /* file advisory information, unused by Haiku */ 71 #define POSIX_FADV_NORMAL 0 /* no advice */ 72 #define POSIX_FADV_SEQUENTIAL 1 /* expect sequential access */ 73 #define POSIX_FADV_RANDOM 2 /* expect access in a random order */ 74 #define POSIX_FADV_WILLNEED 3 /* expect access in the near future */ 75 #define POSIX_FADV_DONTNEED 4 /* expect no access in the near future */ 76 #define POSIX_FADV_NOREUSE 5 /* expect access only once */ 77 78 /* advisory file locking */ 79 80 struct flock { 81 short l_type; 82 short l_whence; 83 off_t l_start; 84 off_t l_len; 85 pid_t l_pid; 86 }; 87 88 89 #ifdef __cplusplus 90 extern "C" { 91 #endif 92 93 extern int creat(const char *path, mode_t mode); 94 extern int open(const char *path, int openMode, ...); 95 /* the third argument is the permissions of the created file when O_CREAT 96 is passed in oflags */ 97 extern int openat(int fd, const char *path, int openMode, ...); 98 99 extern int fcntl(int fd, int op, ...); 100 101 extern int posix_fadvise(int fd, off_t offset, off_t len, int advice); 102 extern int posix_fallocate(int fd, off_t offset, off_t len); 103 104 #ifdef __cplusplus 105 } 106 #endif 107 108 #endif /* _FCNTL_H */ 109