iproute/SOURCES/0002-configure-fix-parsing-issue-on-libbpf_dir-option.patch

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2022-05-10 07:16:50 +00:00
From a9cf0f0c57cf978ebe2abfd4c5a1b7df94f0a8ac Mon Sep 17 00:00:00 2001
Message-Id: <a9cf0f0c57cf978ebe2abfd4c5a1b7df94f0a8ac.1637678195.git.aclaudi@redhat.com>
In-Reply-To: <b30268eda844bdebbb8e5e4f5735e3b1bb666368.1637678195.git.aclaudi@redhat.com>
References: <b30268eda844bdebbb8e5e4f5735e3b1bb666368.1637678195.git.aclaudi@redhat.com>
From: Andrea Claudi <aclaudi@redhat.com>
Date: Tue, 23 Nov 2021 15:28:18 +0100
Subject: [PATCH] configure: fix parsing issue on libbpf_dir option
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2016061
Upstream Status: iproute2.git commit 48c379bc
commit 48c379bc2afd43b3246f68ed46475f5318b1218f
Author: Andrea Claudi <aclaudi@redhat.com>
Date: Thu Oct 14 10:50:50 2021 +0200
configure: fix parsing issue on libbpf_dir option
configure is stuck in an endless loop if '--libbpf_dir' option is used
without a value:
$ ./configure --libbpf_dir
./configure: line 515: shift: 2: shift count out of range
./configure: line 515: shift: 2: shift count out of range
[...]
Fix it splitting 'shift 2' into two consecutive shifts, and making the
second one conditional to the number of remaining arguments.
A check is also provided after the while loop to verify the libbpf dir
exists; also, as LIBBPF_DIR does not have a default value, configure bails
out if the user does not specify a value after --libbpf_dir, thus avoiding
to produce an erroneous configuration.
Fixes: 7ae2585b865a ("configure: convert LIBBPF environment variables to command-line options")
Signed-off-by: Andrea Claudi <aclaudi@redhat.com>
Acked-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David Ahern <dsahern@kernel.org>
---
configure | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/configure b/configure
index ea9051ab..0f304206 100755
--- a/configure
+++ b/configure
@@ -486,7 +486,7 @@ usage()
cat <<EOF
Usage: $0 [OPTIONS]
--include_dir <dir> Path to iproute2 include dir
- --libbpf_dir Path to libbpf DESTDIR
+ --libbpf_dir <dir> Path to libbpf DESTDIR
--libbpf_force Enable/disable libbpf by force. Available options:
on: require link against libbpf, quit config if no libbpf support
off: disable libbpf probing
@@ -506,8 +506,9 @@ else
INCLUDE="$1"
[ "$#" -gt 0 ] && shift ;;
--libbpf_dir)
- LIBBPF_DIR="$2"
- shift 2 ;;
+ shift
+ LIBBPF_DIR="$1"
+ [ "$#" -gt 0 ] && shift ;;
--libbpf_force)
if [ "$2" != 'on' ] && [ "$2" != 'off' ]; then
usage 1
@@ -525,6 +526,9 @@ else
fi
[ -d "$INCLUDE" ] || usage 1
+if [ "${LIBBPF_DIR-unused}" != "unused" ]; then
+ [ -d "$LIBBPF_DIR" ] || usage 1
+fi
echo "# Generated config based on" $INCLUDE >$CONFIG
quiet_config >> $CONFIG
--
2.31.1