tests/scm_rights-fd.test

#!/bin/sh

# Check how SCM_RIGHTS control messages are decoded in -y mode.

. "${srcdir=.}/init.sh"

# strace -y is implemented using /proc/$pid/fd
[ -d /proc/self/fd/ ] ||
	framework_skip_ '/proc/self/fd/ is not available'

check_prog grep

rm -f $LOG.*

./scm_rights ||
	fail_ 'scm_rights failed'

args="-tt -ff -y -xx -enetwork -o $LOG ./scm_rights"
$STRACE $args ||
	fail_ "$STRACE $args failed"

"$srcdir"/../strace-log-merge $LOG > $LOG || {
	cat $LOG
	fail_ 'strace-log-merge failed'
}
rm -f $LOG.*

grep_log()
{
	local syscall="$1"; shift
	local prefix='[1-9][0-9]* +[0-9]+:[0-9]+:[0-9]+\.[0-9]+ +'

	LC_ALL=C grep -E -x "$prefix$syscall$*" $LOG > /dev/null || {
		cat $LOG
		fail_ "$STRACE $args failed to trace \"$syscall\" properly"
	}
}

n='[1-9][0-9]*'
msg='\{msg_name\(0\)=NULL, msg_iov\(1\)=\[\{"\\x00\\x00\\x00\\x00[^"]*", '"$n"'\}\], msg_controllen='"$n"
rights='\{cmsg_len='"$n"', cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, \[3</dev/null>, 4</dev/zero>\]\}'
creds='\{cmsg_len='"$n"', cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS, \{pid='"$n"', uid=[0-9]+, gid=[0-9]+\}\}'
grep_log sendmsg '\(1<socket:\[[0-9]+\]>, '"$msg"', \['"$rights"'\], msg_flags=0\}, 0\) += '"$n"
grep_log recvmsg '\(0<socket:\[[0-9]+\]>, '"$msg"', \['"$creds"', '"$rights"'\], msg_flags=0\}, 0\) += '"$n"

exit 0