pty.c File Reference

posix pseudo terminal implementation More...

Functions
int	posix_openpt (int oflag)
	Open a pseudo-terminal device. More...
int	unlockpt (int fd)
	Unlock a pseudo-terminal master/slave pair.
int	grantpt (int fd)
	Grant access to the slave pseudo-terminal device.
char *	ptsname (int fd)
	Get name of the slave pseudo-terminal device.
int	ptm_close (int fd)
ssize_t	ptm_read (int fd, void *buf, size_t count)
	Read on pseudo-terminal master. (thread-safe) More...
ssize_t	ptm_write (int fd, const void *buf, size_t count)
	Write on pseudo-terminal master. (thread-safe) More...
int	pts_close (int fd)
iref_t	posixcompat_pts_get_iref (int fd)
	Retrieve interface reference of session interface associated with pseudo-terminal. More...

Detailed Description

posix pseudo terminal implementation

This implementation provides a blocking API to pseudo-terminals with buffered input and unbuffered output.

Function Documentation

int posix_openpt

(

int

oflag

)

Open a pseudo-terminal device.

Exports a terminal interface and creates the file '/dev/pts/0' for the slave side.

Note

The vfs must be initialized before this function is called.

iref_t posixcompat_pts_get_iref

(

int

fd

)

Retrieve interface reference of session interface associated with pseudo-terminal.

Parameters

fd	File descriptor of slave side.

Returns

Interface reference associated with fd or IREF_NULL on error.

int ptm_close

(

int

fd

)

Wrapper functions for master side.

ssize_t ptm_read	(	int	fd,
		void *	buf,
		size_t	count
	)

Read on pseudo-terminal master. (thread-safe)

Called, when a read happens on a file-descriptor of type FDTAB_TYPE_PTM. Should not be called directly by applications. Implements POSIX read semantics.

ssize_t ptm_write	(	int	fd,
		const void *	buf,
		size_t	count
	)

Write on pseudo-terminal master. (thread-safe)

Called, when a write happens on a file-descriptor of type FDTAB_TYPE_PTM. Should not be called directly by applications. Implements POSIX write semantics.

int pts_close

(

int

fd

)

Wrapper functions for slave side.