banan-os/libc/include/fcntl.h

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#ifndef _FCNTL_H
#define _FCNTL_H 1
// https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/fcntl.h.html
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#include <sys/cdefs.h>
__BEGIN_DECLS
#include <sys/stat.h>
#include <unistd.h>
#define __need_mode_t
#define __need_off_t
#define __need_pid_t
#include <sys/types.h>
#define F_DUPFD 1
#define F_DUPFD_CLOEXEC 2
#define F_GETFD 3
#define F_SETFD 4
#define F_GETFL 5
#define F_SETFL 6
#define F_GETLK 7
#define F_SETLK 8
#define F_SETLKW 9
#define F_GETOWN 10
#define F_SETOWN 11
#define FD_CLOEXEC 1
#define F_RDLCK 1
#define F_UNLCK 2
#define F_WRLCK 3
// NOTE: also defined in stdio.h
#define SEEK_SET 1
#define SEEK_CUR 2
#define SEEK_END 3
/* bits 4-11 */
#define O_CLOEXEC 0x00010
#define O_CREAT 0x00020
#define O_DIRECTORY 0x00040
#define O_EXCL 0x00080
#define O_NOCTTY 0x00100
#define O_NOFOLLOW 0x00200
#define O_TRUNC 0x00400
#define O_TTY_INIT 0x00800
/* bits 12-16 */
#define O_APPEND 0x01000
#define O_DSYNC 0x02000
#define O_NONBLOCK 0x04000
#define O_RSYNC 0x08000
#define O_SYNC 0x10000
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/* bits 0-3 */
#define O_RDONLY 0x00001
#define O_WRONLY 0x00002
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#define O_RDWR (O_RDONLY | O_WRONLY)
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#define O_SEARCH 0x00004
#define O_EXEC 0x00008
#define O_ACCMODE 0x0000F
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/* bit 17 */
#define AT_FDCWD 0x20000
/* bit 18 */
#define AT_EACCESS 0x40000
/* bit 19 */
#define AT_SYMLINK_NOFOLLOW 0x80000
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/* bit 20 */
#define AT_SYMLINK_FOLLOW 0x100000
/* bit 21 */
#define AT_REMOVEDIR 0x200000
/* bits 22-27 */
#define POSIX_FADV_DONTNEED 0x0400000
#define POSIX_FADV_NOREUSE 0x0800000
#define POSIX_FADV_NORMAL 0x1000000
#define POSIX_FADV_RANDOM 0x2000000
#define POSIX_FADV_SEQUENTIAL 0x4000000
#define POSIX_FADV_WILLNEED 0x8000000
struct flock
{
short l_type; /* Type of lock; F_RDLCK, F_WRLCK, F_UNLCK. */
short l_whence; /* Flag for starting offset. */
off_t l_start; /* Relative offset in bytes. */
off_t l_len; /* Size; if 0 then until EOF. */
pid_t l_pid; /* Process ID of the process holding the lock; returned with F_GETLK. */
};
int creat(const char* path, mode_t mode);
int fcntl(int fildes, int cmd, ...);
int open(const char* path, int oflag, ...);
int openat(int fd, const char* path, int oflag, ...);
int posix_fadvise(int fd, off_t offset, off_t len, int advice);
int posix_fallocate(int fd, off_t offset, off_t len);
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__END_DECLS
#endif