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Make linux(4) warn about unsupported CMSG level/type.

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MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D25255
This commit is contained in:
Edward Tomasz Napierala 2020-06-14 14:38:40 +00:00
parent 3900c11481
commit 889cd28520
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=362176
1 changed files with 8 additions and 1 deletions
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9
sys/compat/linux/linux_socket.c
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@ -1042,8 +1042,12 @@ linux_sendmsg_common(struct thread *td, l_int s, struct l_msghdr *msghdr,
cmsg->cmsg_level =
linux_to_bsd_sockopt_level(linux_cmsg.cmsg_level);
if (cmsg->cmsg_type == -1
|| cmsg->cmsg_level != SOL_SOCKET)
|| cmsg->cmsg_level != SOL_SOCKET) {
linux_msg(curthread,
"unsupported sendmsg cmsg level %d type %d",
linux_cmsg.cmsg_level, linux_cmsg.cmsg_type);
goto bad;
}
/*
* Some applications (e.g. pulseaudio) attempt to
@ -1228,6 +1232,9 @@ linux_recvmsg_common(struct thread *td, l_int s, struct l_msghdr *msghdr,
bsd_to_linux_sockopt_level(cm->cmsg_level);
if (linux_cmsg->cmsg_type == -1 ||
cm->cmsg_level != SOL_SOCKET) {
linux_msg(curthread,
"unsupported recvmsg cmsg level %d type %d",
cm->cmsg_level, cm->cmsg_type);
error = EINVAL;
goto bad;
}