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| author | luigi <luigi@FreeBSD.org> | 2010-11-12 13:02:26 +0000 |
|---|---|---|
| committer | luigi <luigi@FreeBSD.org> | 2010-11-12 13:02:26 +0000 |
| commit | d5e8d236f4009fc2611f996c317e94b2c8649cf5 (patch) | |
| tree | e91599dcbd47fe55ea222b065a06b499aa245cca /sys/kern | |
| parent | 20a2600f84554023f0954887c9cfc8bf63c28cf0 (diff) | |
| download | FreeBSD-src-d5e8d236f4009fc2611f996c317e94b2c8649cf5.zip FreeBSD-src-d5e8d236f4009fc2611f996c317e94b2c8649cf5.tar.gz | |
This commit implements the SO_USER_COOKIE socket option, which lets
you tag a socket with an uint32_t value. The cookie can then be
used by the kernel for various purposes, e.g. setting the skipto
rule or pipe number in ipfw (this is the reason SO_USER_COOKIE has
been implemented; however there is nothing ipfw-specific in its
implementation).
The ipfw-related code that uses the optopn will be committed separately.
This change adds a field to 'struct socket', but the struct is not
part of any driver or userland-visible ABI so the change should be
harmless.
See the discussion at
http://lists.freebsd.org/pipermail/freebsd-ipfw/2009-October/004001.html
Idea and code from Paul Joe, small modifications and manpage
changes by myself.
Submitted by: Paul Joe
MFC after: 1 week
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/uipc_socket.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/kern/uipc_socket.c b/sys/kern/uipc_socket.c index d6c9854..e3e8e28 100644 --- a/sys/kern/uipc_socket.c +++ b/sys/kern/uipc_socket.c @@ -2386,6 +2386,7 @@ sosetopt(struct socket *so, struct sockopt *sopt) struct linger l; struct timeval tv; u_long val; + uint32_t val32; #ifdef MAC struct mac extmac; #endif @@ -2461,6 +2462,15 @@ sosetopt(struct socket *so, struct sockopt *sopt) so->so_fibnum = 0; } break; + + case SO_USER_COOKIE: + error = sooptcopyin(sopt, &val32, sizeof val32, + sizeof val32); + if (error) + goto bad; + so->so_user_cookie = val32; + break; + case SO_SNDBUF: case SO_RCVBUF: case SO_SNDLOWAT: |
