sctp: Avoid using file descriptor 0 to get ENOTSOCK
On some systems, errno will not be ENOTSOCK when operating on file descriptor
0 in an ssh session:
test_1_to_1_accept_close.c 2 TBROK : accept with invalid socketerror:-1, errno:22
test_1_to_1_addrs.c 2 TBROK : sctp_getladdrs with invalid socket error:-1, errno:95
test_1_to_1_connect.c 2 TBROK : connect with invalid socket error:-1, errno:22
test_1_to_1_recvfrom.c 2 TBROK : recvfrom with invalid socket count:0, errno:9
test_1_to_1_recvmsg.c 2 TBROK : recvmsg with invalid socket count:0, errno:9
test_1_to_1_send.c 2 TBROK : send with invalid socket count:15, errno:9
test_1_to_1_sendmsg.c 2 TBROK : sendmsg with invalid socket count:-1, errno:106
test_1_to_1_shutdown.c 2 TBROK : shutdown with an invalid socket error:0, errno:9
test_1_to_1_socket_bind_listen.c 6 TBROK : bind() with invalid socket descriptor error:-1, errno:22
test_1_to_1_sockopt.c 2 TBROK : setsockopt with an invalid socket error:-1, errno:95
test_getname.c 9 TBROK : getsockname on an invalid socket error:0 errno:9
This patch gets a non-socket file descriptor by creating a temporary file
to replace file descriptor 0.
https://github.com/borkmann/lksctp-tools/commit/c43ead6daa0b9ae5763d6cf3d21357a789651417
Signed-off-by: Simon Xu <xu.simon@oracle.com>
Acked-by: Cyril Hrubis <chrubis@suse.cz>
Acked-by: Jan Stancek <jstancek@redhat.com>
11 files changed