commit:     6fc4a7d45798f5ef6605419c684e0ddaa2e812ef
Author:     Ulrich Müller <ulm <AT> gentoo <DOT> org>
AuthorDate: Fri Apr 28 09:20:02 2023 +0000
Commit:     Ulrich Müller <ulm <AT> gentoo <DOT> org>
CommitDate: Sun Apr 30 07:54:34 2023 +0000
URL:        https://gitweb.gentoo.org/proj/portage.git/commit/?id=6fc4a7d4

fowners, fperms: Fix handling of relative pathnames

PMS section 12.3.9 specifies that fowners and fperms "[take] paths
relative to the image directory."

Currently, these helpers interpret any pathnames not beginning with a
slash as relative to the current working directory (after printing a
QA warning). This contradicts the spec.

It is also inconsistent with other helpers like insinto or dostrip,
which expand their pathnames relative to ${ED}.

Bug: https://bugs.gentoo.org/905223
Closes: https://github.com/gentoo/portage/pull/1027
Signed-off-by: Ulrich Müller <ulm <AT> gentoo.org>

 NEWS                       |  3 +++
 bin/ebuild-helpers/fowners | 26 ++++++++++----------------
 bin/ebuild-helpers/fperms  | 25 ++++++++++---------------
 3 files changed, 23 insertions(+), 31 deletions(-)

diff --git a/NEWS b/NEWS
index 77eaa9d7a..6c06d4e42 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,6 @@
+Bug fixes:
+* fowners, fperms: Fix handling of relative pathnames (bug #905223).
+
 portage-3.0.47 (2023-04-30)
 ---------------
 

diff --git a/bin/ebuild-helpers/fowners b/bin/ebuild-helpers/fowners
index d245062e7..ca847cd26 100755
--- a/bin/ebuild-helpers/fowners
+++ b/bin/ebuild-helpers/fowners
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2023 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 source "${PORTAGE_BIN_PATH}"/isolated-functions.sh || exit 1
@@ -8,27 +8,21 @@ if ! ___eapi_has_prefix_variables; then
        EPREFIX= ED=${D}
 fi
 
+args=()
 got_owner=
 for arg; do
-       [[ ${arg} == -* ]] && continue
-
-       if [[ ! ${got_owner} ]]; then
+       if [[ ${arg} == -* ]]; then
+               args+=( "${arg}" )
+       elif [[ ! ${got_owner} ]]; then
+               # the first non-option is the owner and must not be prefixed
                got_owner=1
-               continue
-       fi
-
-       if [[ ${arg} != /* ]]; then
-               eqawarn "Relative path passed to '${0##*/}': ${arg}"
-               eqawarn "This is unsupported. Please use 'chown' when you need 
to work on files"
-               eqawarn "outside the installation image (\${ED})."
+               args+=( "${arg}" )
+       else
+               args+=( "${ED%/}/${arg#/}" )
        fi
 done
 
-
-# we can't prefix all arguments because
-# chown takes random options
-slash="/"
-chown "${@/#${slash}/${ED%/}${slash}}"
+chown "${args[@]}"
 ret=$?
 
 [[ ${ret} -ne 0 ]] && __helpers_die "${0##*/} failed"

diff --git a/bin/ebuild-helpers/fperms b/bin/ebuild-helpers/fperms
index 9e5da5d16..989075eb7 100755
--- a/bin/ebuild-helpers/fperms
+++ b/bin/ebuild-helpers/fperms
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2023 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 source "${PORTAGE_BIN_PATH}"/isolated-functions.sh || exit 1
@@ -8,27 +8,22 @@ if ! ___eapi_has_prefix_variables; then
        ED=${D}
 fi
 
+args=()
 got_mode=
 for arg; do
        # - can either be an option or a mode string
-       [[ ${arg} == -* && ${arg} != -[ugorwxXst] ]] && continue
-
-       if [[ ! ${got_mode} ]]; then
+       if [[ ${arg} == -* && ${arg} != -[ugorwxXst] ]]; then
+               args+=( "${arg}" )
+       elif [[ ! ${got_mode} ]]; then
+               # the first non-option is the mode and must not be prefixed
                got_mode=1
-               continue
-       fi
-
-       if [[ ${arg} != /* ]]; then
-               eqawarn "Relative path passed to '${0##*/}': ${arg}"
-               eqawarn "This is unsupported. Please use 'chmod' when you need 
to work on files"
-               eqawarn "outside the installation image (\${ED})."
+               args+=( "${arg}" )
+       else
+               args+=( "${ED%/}/${arg#/}" )
        fi
 done
 
-# we can't prefix all arguments because
-# chmod takes random options
-slash="/"
-chmod "${@/#${slash}/${ED%/}${slash}}"
+chmod "${args[@]}"
 ret=$?
 [[ ${ret} -ne 0 ]] && __helpers_die "${0##*/} failed"
 exit ${ret}

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