NAME¶
io_passfd - pass a file descriptor over a Unix Domain socket
SYNTAX¶
#include <io.h>
int
io_passfd(int64 sock,int64 fd);
DESCRIPTION¶
io_passfd transfers the file descriptor
fd over the Unix Domain socket
sock. This works much like
dup(2), only that the copy of the descriptor
appears not in this process but at the other end of the Unix Domain socket
(which therefore must be a process on the same system).
The peer can then use
io_receivefd(3) to receive the file descriptor.
Note that the passed descriptor stays open in the sending process.
RETURN VALUE¶
io_passfd returns 0 on success, -1 on error (setting errno accordingly).
SEE ALSO¶
io_receivefd(3)