130b146f78
Added preliminary O_TEMPORARY flag. Made it a bit more POSIX compliant. Cleaned up header. git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9026 a95241bf-73f2-0310-859d-f6bbb57e9c96
99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
/*
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** Distributed under the terms of the Haiku 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_RDLCK 0x0040 /* read or shared lock */
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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_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 /* currently unsupported */
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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_APPEND 0x00000800 /* to end of file */
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#define O_TEXT 0x00004000 /* CR-LF translation */
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#define O_BINARY 0x00008000 /* no translation */
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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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// ToDo: currently not implemented additions:
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#define O_NOFOLLOW 0x00080000
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/* should we implement this? it's similar to O_NOTRAVERSE but will fail on symlinks */
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#define O_NOCACHE 0x00100000 /* doesn't use the file system cache if possible */
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#define O_DIRECT O_NOCACHE
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#define O_MOUNT 0x00200000 /* for file systems */
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#define O_TEMPORARY 0x00400000 /* used to avoid writing temporary files to disk */
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#define O_SHLOCK 0x01000000 /* obtain shared lock */
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#define O_EXLOCK 0x02000000 /* obtain exclusive lock */
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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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#define LOCK_SH 0x01 /* shared file lock */
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#define LOCK_EX 0x02 /* exclusive file lock */
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#define LOCK_NB 0x04 /* don't block when locking */
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#define LOCK_UN 0x08 /* unlock file */
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#define S_IREAD 0x0100 /* owner may read */
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#define S_IWRITE 0x0080 /* owner may write */
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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 *pathname, int oflags, ...);
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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 fcntl(int fd, int op, ...);
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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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