109 lines
3.6 KiB
C
109 lines
3.6 KiB
C
/*
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* Copyright 2002-2012 Haiku, Inc. All Rights Reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _FCNTL_H
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#define _FCNTL_H
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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/* commands that can be passed to fcntl() */
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#define F_DUPFD 0x0001 /* duplicate fd */
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#define F_GETFD 0x0002 /* get fd flags */
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#define F_SETFD 0x0004 /* set fd flags */
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#define F_GETFL 0x0008 /* get file status flags and access mode */
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#define F_SETFL 0x0010 /* set file status flags */
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#define F_GETLK 0x0020 /* get locking information */
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#define F_SETLK 0x0080 /* set locking information */
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#define F_SETLKW 0x0100 /* as above, but waits if blocked */
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#define F_DUPFD_CLOEXEC 0x0200 /* duplicate fd with close on exec set */
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/* advisory locking types */
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#define F_RDLCK 0x0040 /* read or shared lock */
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#define F_UNLCK 0x0200 /* unlock */
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#define F_WRLCK 0x0400 /* write or exclusive lock */
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/* file descriptor flags for fcntl() */
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#define FD_CLOEXEC 1 /* close on exec */
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/* file access modes for open() */
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#define O_RDONLY 0x0000 /* read only */
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#define O_WRONLY 0x0001 /* write only */
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#define O_RDWR 0x0002 /* read and write */
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#define O_ACCMODE 0x0003 /* mask to get the access modes above */
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#define O_RWMASK O_ACCMODE
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/* flags for open() */
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#define O_EXCL 0x0100 /* exclusive creat */
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#define O_CREAT 0x0200 /* create and open file */
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#define O_TRUNC 0x0400 /* open with truncation */
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#define O_NOCTTY 0x1000 /* don't make tty the controlling tty */
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#define O_NOTRAVERSE 0x2000 /* do not traverse leaf link */
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/* flags for open() and fcntl() */
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#define O_CLOEXEC 0x00000040 /* close on exec */
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#define O_NONBLOCK 0x00000080 /* non blocking io */
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#define O_NDELAY O_NONBLOCK
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#define O_APPEND 0x00000800 /* to end of file */
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#define O_SYNC 0x00010000 /* write synchronized I/O file integrity */
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#define O_RSYNC 0x00020000 /* read synchronized I/O file integrity */
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#define O_DSYNC 0x00040000 /* write synchronized I/O data integrity */
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#define O_NOFOLLOW 0x00080000 /* fail on symlinks */
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#define O_DIRECT 0x00100000 /* do not use the file system cache if */
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/* possible */
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#define O_NOCACHE O_DIRECT
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#define O_DIRECTORY 0x00200000 /* fail if not a directory */
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/* flags for the *at() functions */
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#define AT_FDCWD (-1) /* CWD FD for the *at() functions */
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#define AT_SYMLINK_NOFOLLOW 0x01 /* fstatat(), fchmodat(), fchownat(),
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utimensat() */
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#define AT_SYMLINK_FOLLOW 0x02 /* linkat() */
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#define AT_REMOVEDIR 0x04 /* unlinkat() */
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#define AT_EACCESS 0x08 /* faccessat() */
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/* file advisory information, unused by Haiku */
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#define POSIX_FADV_NORMAL 0 /* no advice */
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#define POSIX_FADV_SEQUENTIAL 1 /* expect sequential access */
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#define POSIX_FADV_RANDOM 2 /* expect access in a random order */
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#define POSIX_FADV_WILLNEED 3 /* expect access in the near future */
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#define POSIX_FADV_DONTNEED 4 /* expect no access in the near future */
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#define POSIX_FADV_NOREUSE 5 /* expect access only once */
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/* advisory file locking */
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struct flock {
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short l_type;
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short l_whence;
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off_t l_start;
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off_t l_len;
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pid_t l_pid;
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern int creat(const char *path, mode_t mode);
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extern int open(const char *path, int openMode, ...);
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/* the third argument is the permissions of the created file when O_CREAT
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is passed in oflags */
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extern int openat(int fd, const char *path, int openMode, ...);
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extern int fcntl(int fd, int op, ...);
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extern int posix_fadvise(int fd, off_t offset, off_t len, int advice);
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extern int posix_fallocate(int fd, off_t offset, off_t len);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _FCNTL_H */
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