diff options
| author |   tedu <tedu@openbsd.org> | 2003-07-24 01:31:36 +0000 |
|---|---|---|
| committer | tedu <tedu@openbsd.org> | 2003-07-24 01:31:36 +0000 |
| commit | d1c30ac1c776a57ccb5bb16b86aae718ad658440 (patch) | |
| tree | 6dcf19e409b0ef461077ef194cd24bae66d496ca /sys/compat/linux/linux_socket.c | |
| parent | warn about unsafe APIs at link time. Conditional on libc/Makefile defining (diff) | |
| download | wireguard-openbsd-d1c30ac1c776a57ccb5bb16b86aae718ad658440.tar.xz wireguard-openbsd-d1c30ac1c776a57ccb5bb16b86aae718ad658440.zip | |
after sys_sendmsg, change control message level back in case somebody looks
at it. we don't use stackgap because control messages can be larger than
the gap, and it's just easier this way. ok deraadt@
Diffstat (limited to 'sys/compat/linux/linux_socket.c')
| -rw-r--r-- | sys/compat/linux/linux_socket.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/sys/compat/linux/linux_socket.c b/sys/compat/linux/linux_socket.c index f6e5cbf3356..0d458e32a01 100644 --- a/sys/compat/linux/linux_socket.c +++ b/sys/compat/linux/linux_socket.c @@ -1,4 +1,4 @@ -/* $OpenBSD: linux_socket.c,v 1.29 2003/01/21 08:05:11 niklas Exp $ */ +/* $OpenBSD: linux_socket.c,v 1.30 2003/07/24 01:31:36 tedu Exp $ */ /* $NetBSD: linux_socket.c,v 1.14 1996/04/05 00:01:50 christos Exp $ */ /* @@ -1068,6 +1068,7 @@ linux_sendmsg(p, v, retval) msg.msg_name = (struct sockaddr *)sa; if ((error = copyout(&msg, nmsg, sizeof(struct msghdr)))) return (error); + lla.msg = nmsg; } SCARG(&bla, s) = lla.s; @@ -1089,14 +1090,25 @@ linux_sendmsg(p, v, retval) * 0xffff, of course. */ level = SOL_SOCKET; - /* XXX should use stack gap! */ + /* + * XXX should use stack gap! + * We don't because the control header is variable length + * up to 2048 bytes, and there's only 512 bytes of gap. + */ error = copyout(&level, &((struct cmsghdr *)control)-> cmsg_level, sizeof(int)); if (error) return error; } done: - return sys_sendmsg(p, &bla, retval); + error = sys_sendmsg(p, &bla, retval); + /* replace level, just in case somebody cares. */ + if (level == SOL_SOCKET) { + level = 1; + copyout(&level, &((struct cmsghdr *)control)->cmsg_level, + sizeof(int)); + } + return (error); } /* |