9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# CDDL HEADER START
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3e14f97f673e8a630f076077de35afdd43dc1587Roger A. Faulkner# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# This test checks whether ksh93 does unneccesaty |libc::getpwnam()|
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# calls for "~(modifer)pattern"-style shell patterns
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# This was reported as CR #6807179 ("ksh93 does unneccesary |libc::getpwnam()| lookups for ~(modifier) pattern patterns"):
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# ------------ snip ------------
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# ksh93 does unneccesary |libc::getpwnam()| lookups for
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# ~(modifer)pattern patterns, e.g. [[ $foo == ~(E)hello.*world ]].
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# The problem is that the shell ~(modifer)pattern is an extended
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# pattern syntax which allows to specify a "modifer" to change
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# the behaviour for "pattern". However the '~' at the beginning
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# of this string is causing a tilde expansion (or better: It's
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# filling an internal buffer as preparation for tilde expansion
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# and this code calls |libc::getpwnam()|) which shouldn't be
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# done in this case.
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# [1]=For example the "modifer" allows to specifcy "perl",
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# "fgrep", "grep", "egrep", "POSIX shell", "korn shell" and
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# other types of pattern matching systems (or select stuff
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# like archors, case-insensitive matching etc. etc.).
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# ------------ snip ------------
3e14f97f673e8a630f076077de35afdd43dc1587Roger A. Faulknertmpfile="$(mktemp -t "sun_solaris_cr_6807179_shellpattern_uses_getpwnam.${PPID}.$$.XXXXXX")" || err_exit "Cannot create temporary file."
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# test 1: Check if the shell uses |libc::getpwnam()| for pattern "~(Elr)wo.*ld"
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Diktruss -u :: -o "${tmpfile}" ${SHELL} -c '[[ ${hello} == ~(Elr)wo.*ld ]] ; true' || err_exit "truss returned failure=$?"
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik[[ "$( < "${tmpfile}")" != *getpwnam* ]] || err_exit "truss log reports the use of getpwnam() for pattern ~(Elr)wo.*ld"
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dikrm "${tmpfile}" || err_exit "rm ${tmpfile} failed."
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# test 2: Check if the shell uses |libc::getpwnam()| for pattern "~(Si)wo*ld"
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Diktruss -u :: -o "${tmpfile}" ${SHELL} -c '[[ ${hello} == ~(Si)wo*ld ]] ; true' || err_exit "truss returned failure=$?"
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik[[ "$( < "${tmpfile}")" != *getpwnam* ]] || err_exit "truss log reports the use of getpwnam() for pattern ~(Si)wo*ld"
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dikrm "${tmpfile}" || err_exit "rm ${tmpfile} failed."
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik# test 3: Same as test 1 but uses ~root/ as pattern which will force the use of |libc::getpwnam()|
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dikgetent passwd root >/dev/null || err_exit "getent passwd root failed" # safeguard to make sure we get a warning if user root is missing
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Diktruss -u :: -o "${tmpfile}" ${SHELL} -c '[[ ${hello} == ~root/ ]] ; true' || err_exit "truss returned failure=$?"
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dik[[ "$( < "${tmpfile}" )" == *getpwnam* ]] || err_exit "truss log reports the use of getpwnam() for pattern ~root/"
9a6f360e750e0b14fc9b9bf8347e0ebad3959e3fCasper H.S. Dikrm "${tmpfile}" || err_exit "rm ${tmpfile} failed."