Hintsbd: fix locking

[exim.git] / src / util / renew-opendmarc-tlds.sh

diff --git a/src/util/renew-opendmarc-tlds.sh b/src/util/renew-opendmarc-tlds.sh
index 2ce937699af552ba674c21072b5b31df5cbf621a..d626aac37efcaa5758cc24439d3fc1237568cf9d 100755 (executable)
--- a/src/util/renew-opendmarc-tlds.sh
+++ b/src/util/renew-opendmarc-tlds.sh
@@ -1,4 +1,6 @@
 #!/bin/sh -eu
+# Copyright (c) The Exim Maintainers 2022
+# SPDX-License-Identifier: GPL-2.0-or-later
 #
 # Short version of this script:
 #   curl -f -o /var/cache/exim/opendmarc.tlds https://publicsuffix.org/list/public_suffix_list.dat
@@ -24,7 +26,8 @@
 # This should be "pretty portable"; the only things it depends upon are:
 #  * a POSIX shell which additionally implements 'local' (dash works)
 #  * the 'curl' command; change the fetch_candidate() function to replace that
-#  * the 'stat' command, to get the size of a file; change size_of() if need be
+#  * the 'stat' command, to get the size of a file; else Perl
+#    + change size_of() if need be; it's defined per-OS
 #  * the 'hexdump' command and /dev/urandom existing
 #    + used when invoked with 'cron', to avoid retrieving on a minute boundary
 #      and contending with many other automated systems.
@@ -84,8 +87,10 @@ case $(uname -s) in
 Linux)
        size_of() { stat -c %s "$1"; }
        ;;
-*)  # optimism?
-       size_of() { stat -c %s "$1"; }
+*)
+       # why do we live in a world where Perl is the safe portable solution
+       # to getting the size of a file?
+       size_of() { perl -le 'print((stat($ARGV[0]))[7])' -- "$1"; }
        ;;
 esac