1 # $OpenBSD: agent-ptrace.sh,v 1.2 2014/02/27 21:21:25 djm Exp $ 2 # Placed in the Public Domain. 3 4 tid="disallow agent ptrace attach" 5 6 if have_prog uname ; then 7 case `uname` in 8 AIX|CYGWIN*|OSF1) 9 echo "skipped (not supported on this platform)" 10 exit 0 11 ;; 12 esac 13 fi 14 15 if [ "x$USER" = "xroot" ]; then 16 echo "Skipped: running as root" 17 exit 0 18 fi 19 20 if have_prog gdb ; then 21 : ok 22 else 23 echo "skipped (gdb not found)" 24 exit 0 25 fi 26 27 if $OBJ/setuid-allowed ${SSHAGENT} ; then 28 : ok 29 else 30 echo "skipped (${SSHAGENT} is mounted on a no-setuid filesystem)" 31 exit 0 32 fi 33 34 if test -z "$SUDO" ; then 35 echo "skipped (SUDO not set)" 36 exit 0 37 else 38 $SUDO chown 0 ${SSHAGENT} 39 $SUDO chgrp 0 ${SSHAGENT} 40 $SUDO chmod 2755 ${SSHAGENT} 41 fi 42 43 trace "start agent" 44 eval `${SSHAGENT} -s` > /dev/null 45 r=$? 46 if [ $r -ne 0 ]; then 47 fail "could not start ssh-agent: exit code $r" 48 else 49 # ls -l ${SSH_AUTH_SOCK} 50 gdb ${SSHAGENT} ${SSH_AGENT_PID} > ${OBJ}/gdb.out 2>&1 << EOF 51 quit 52 EOF 53 r=$? 54 if [ $r -ne 0 ]; then 55 fail "gdb failed: exit code $r" 56 fi 57 egrep 'ptrace: Operation not permitted.|procfs:.*Permission denied.|ttrace.*Permission denied.|procfs:.*: Invalid argument.|Unable to access task ' >/dev/null ${OBJ}/gdb.out 58 r=$? 59 rm -f ${OBJ}/gdb.out 60 if [ $r -ne 0 ]; then 61 fail "ptrace succeeded?: exit code $r" 62 fi 63 64 trace "kill agent" 65 ${SSHAGENT} -k > /dev/null 66 fi 67
