XSI File System option group (placeholder). More...

Macros
#define	F_LOCK 1
	Lock a region of a file (lockf command).

#define	F_TEST 3
	Test whether a file region is locked (lockf command).

#define	F_TLOCK 2
	Lock a region, failing immediately if blocked (lockf command).

#define	F_ULOCK 0
	Unlock a region (lockf command).

Functions
int	mknod (const char *path, mode_t mode, dev_t dev)
	Create a special or regular file (XSI extension).

int	mknodat (int fd, const char *path, mode_t mode, dev_t dev)
	Create a special or regular file relative to a directory descriptor (XSI).

int	lockf (int fildes, int function, off_t size)
	Apply, test, or remove an advisory file lock (XSI extension).

void	sync (void)
	Schedule outstanding writes to all file systems (XSI extension).

Detailed Description

XSI File System option group (placeholder).

See also: https://pubs.opengroup.org/onlinepubs/9699919799/xrat/V4_subprofiles.html; https://pubs.opengroup.org/onlinepubs/9699919799/xrat/V4_subprofiles.html

Macro Definition Documentation

◆ F_LOCK

#define F_LOCK 1

Lock a region of a file (lockf command).

Definition at line 91 of file unistd.h.

◆ F_TEST

#define F_TEST 3

Test whether a file region is locked (lockf command).

Definition at line 93 of file unistd.h.

◆ F_TLOCK

#define F_TLOCK 2

Lock a region, failing immediately if blocked (lockf command).

Definition at line 95 of file unistd.h.

◆ F_ULOCK

#define F_ULOCK 0

Unlock a region (lockf command).

Definition at line 97 of file unistd.h.

Function Documentation

◆ lockf()

int lockf	(	int	fildes,
		int	function,
		off_t	size
	)

Apply, test, or remove an advisory file lock (XSI extension).

See also: https://pubs.opengroup.org/onlinepubs/9699919799/functions/lockf.html

◆ mknod()

int mknod	(	const char *	path,
		mode_t	mode,
		dev_t	dev
	)

Create a special or regular file (XSI extension).

◆ mknodat()

int mknodat	(	int	fd,
		const char *	path,
		mode_t	mode,
		dev_t	dev
	)

Create a special or regular file relative to a directory descriptor (XSI).

◆ sync()

void sync ( void )

Schedule outstanding writes to all file systems (XSI extension).

See also: https://pubs.opengroup.org/onlinepubs/9699919799/functions/sync.html

Macros

Functions