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CONNLD(4) Kernel Interfaces Manual CONNLD(4) NAME conn_ld - line discipline for unique stream connection SYNOPSIS #include <sys/filio.h> DESCRIPTION This line discipline provides unique connections to a server. The server process should push the line discipline on a pipe (see FIOPUSHLD in stream(4)) and fmount(2) the pipe end on a file. A subsequent at- tempt to open(2) or creat that file causes a new pipe to be created. A file descriptor for one end of the new pipe is passed on the mounted pipe to to the server process as if by FIOSNDFD; see stream(4). The opening process is blocked until the server responds. The server should receive the passed file descriptor with FIORCVFD and respond in one of the following ways: -- Accept the new file descriptor by performing ioctl(fd, FIOACCEPT, (void *)0); The originating open completes and returns a file descriptor for the other end of the new pipe. -- Write some data on the new file descriptor. This performs an implicit -- Pass a different file descriptor: ioctl(fd, FIOSNDFD, &newfd); The originator's end of the new pipe is closed, and a file de- scriptor for the open file designated by newfd is returned to the originating open. -- Reject the connection, by closing the new file descriptor or by performing ioctl(fd, FIOREJECT, (void *)0); The originating open fails with ENXIO and the new pipe is dis- carded. SEE ALSO fmount(2), stream(4) CONNLD(4)