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GETRTABLE(2)                BSD System Calls Manual               GETRTABLE(2)

NAME
     getrtable, setrtable -- get and set the default routing table of the cur-
     rent process

SYNOPSIS
     #include <&lt;sys/types.h>&gt;
     #include <&lt;sys/socket.h>&gt;

     int
     getrtable(void);

     int
     setrtable(int rtableid);

DESCRIPTION
     getrtable() and setrtable() manipulate the routing table and routing
     domain associated with the current process.

     Only the superuser is allowed to change the process routing table if it
     is already set to a non-zero value.

RETURN VALUES
     getrtable() returns the routing table of the current process.  Upon suc-
     cessful completion, setrtable() returns 0 if the call succeeds, -1 if it
     fails.

ERRORS
     The call succeeds unless:

     [EINVAL]           The value of the rtableid argument is not a valid
                        routing table.

     [EPERM]            The user is not the superuser and the routing table of
                        the calling process is already set to a non-zero
                        value.

SEE ALSO
     getsockopt(2), route(8)

HISTORY
     The getrtable() and setrtable() system calls appeared in OpenBSD 4.8.

BSD                             April 29, 2017                             BSD