about the sock_fd

about the sock_fd

[C.J]

Hi list,

In the pppd code, I read that it used sock_fd to set ip addr on a interface(ppp0). I want to know whether this sock_fd is a common udp socket or not. Do we  need some extra operations on this socket. Like unit_fd or dev_fd which both of them need ioctl on them.

Thx & Reg

--
cj

Re: about the sock_fd

[James Carlson]

C.J writes:
> In the pppd code, I read that it used sock_fd to set ip addr on a interface(ppp0). I want to know whether this sock_fd is a common udp socket or not. Do we  need some extra operations on this socket. Like unit_fd or dev_fd which both of them need ioctl on them.

Does this help?

% grep 'sock_fd = ' *.c
sys-linux.c:static int sock_fd = -1;    /* socket for doing interface ioctls */
sys-linux.c:    sock_fd = socket(AF_INET, SOCK_DGRAM, 0);
sys-linux.c:    sock_fd = socket(AF_INET, SOCK_DGRAM, 0);
% 

-- 
James Carlson         42.703N 71.076W         <carlsonj@workingcode.com>