tun_afunix.h File Reference

#include <sys/types.h>
#include "tun.h"

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Functions
void	open_tun_afunix (const struct options *o, int mtu, struct tuntap *tt, const struct env_set *env)
	Opens an AF_UNIX based tun device.
void	close_tun_afunix (struct tuntap *tt)
	Closes the socket used for the AF_UNIX based device.
ssize_t	write_tun_afunix (struct tuntap *tt, const uint8_t *buf, int len)
	Writes a packet to a AF_UNIX based tun device.
ssize_t	read_tun_afunix (struct tuntap *tt, uint8_t *buf, int len)
	Reads a packet from a AF_UNIX based tun device.
static bool	is_tun_afunix (const char *devnode)
	Checks whether a –dev-node parameter specifies a AF_UNIX device.

Function Documentation

close_tun_afunix()

void close_tun_afunix

(

struct tuntap *

tt

)

Closes the socket used for the AF_UNIX based device.

Also sends a SIGINT to the child process that was spawned to handle the tun device

Definition at line 129 of file tun_afunix.c.

References tuntap::actual_name, tuntap::afunix, ASSERT, afunix_context::childprocess, and SIGINT.

Referenced by do_close_tun_simple().

is_tun_afunix()

bool is_tun_afunix ( const char * devnode )

inlinestatic

Checks whether a –dev-node parameter specifies a AF_UNIX device.

Parameters

devnode

the string to check

Returns

true if the string starts with unix:

Definition at line 61 of file tun_afunix.h.

References strprefix().

Referenced by do_init_tun().

open_tun_afunix()

void open_tun_afunix	(	const struct options *	o,
		int	mtu,
		struct tuntap *	tt,
		const struct env_set *	env )

Opens an AF_UNIX based tun device.

This also executes the command that the user provided taking care of implementing the actual tun device.

Definition at line 77 of file tun_afunix.c.

References tuntap::actual_name, options::dev, options::dev_node, options::dev_type, dev_type_string(), env_set_create(), env_set_inherit(), gc, gc_free(), gc_new(), options::lladdr, M_ERR, msg, options::route_default_gateway, set_cloexec(), setenv_int(), setenv_str(), socket_set_buffers(), string_alloc(), and tun_afunix_exec_child().

Referenced by open_tun_backend().

read_tun_afunix()

ssize_t read_tun_afunix	(	struct tuntap *	tt,
		uint8_t *	buf,
		int	len )

Reads a packet from a AF_UNIX based tun device.

Definition at line 162 of file tun_afunix.c.

References tuntap::afunix, afunix_context::childprocess, M_WARN, msg, openvpn_waitpid_check(), and read.

Referenced by read_incoming_tun().

write_tun_afunix()

ssize_t write_tun_afunix	(	struct tuntap *	tt,
		const uint8_t *	buf,
		int	len )

Writes a packet to a AF_UNIX based tun device.

Definition at line 149 of file tun_afunix.c.

References tuntap::afunix, afunix_context::childprocess, M_WARN, msg, openvpn_waitpid_check(), and write.

Referenced by process_outgoing_tun().