From 50b870ee3c7a000a6f1a6c5b5e927f3af1b124c0 Mon Sep 17 00:00:00 2001 From: Yousong Zhou Date: Tue, 3 Nov 2020 11:38:06 +0800 Subject: base-files: upgrade: add get_image_dd() This is mainly to handle stderr message "Broken pipe", "F+P records in/out" by common pattern "xcat | dd .." Ref: https://bugs.openwrt.org/index.php?do=details&task_id=3140 Reported-by: Philip Prindeville Signed-off-by: Yousong Zhou Reviewed-By: Philip Prindeville --- package/base-files/files/lib/upgrade/common.sh | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'package/base-files') diff --git a/package/base-files/files/lib/upgrade/common.sh b/package/base-files/files/lib/upgrade/common.sh index 5eb7b23a83..a5c27dc2fb 100644 --- a/package/base-files/files/lib/upgrade/common.sh +++ b/package/base-files/files/lib/upgrade/common.sh @@ -106,6 +106,17 @@ get_image() { # [ ] $cmd <"$from" } +get_image_dd() { + local from="$1"; shift + + ( + exec 3>&2 + ( exec 3>&2; get_image "$from" 2>&1 1>&3 | grep -v -F ' Broken pipe' ) 2>&1 1>&3 \ + | ( exec 3>&2; dd "$@" 2>&1 1>&3 | grep -v -E ' records (in|out)') 2>&1 1>&3 + exec 3>&- + ) +} + get_magic_word() { (get_image "$@" | dd bs=2 count=1 | hexdump -v -n 2 -e '1/1 "%02x"') 2>/dev/null } -- cgit v1.2.3