Package: syslinux Version: 3:4.05+dfsg-6+deb8u1 Severity: normal Tags: patch
The substitution used for guessing the master device name for partition removes all digits from the device name. This doesn't work on many device classes for which the whole disk device path contains digits (see Documentation/devices.txt in kernel source tree, https://www.kernel.org/doc/Documentation/devices.txt). That happened to me on the system booting from embedded MMC card for which the naming scheme is: /dev/mmcblk0 - first MMC device /dev/mmcblk0p1 - its first partition Such path confuses extlinux.postinst and so it incorrectly tries to write the MBR to /dev/mmcblkp, which of course makes package configure fail. Attached patch (created at the top of git://daniel-baumann.ch/git/debian/packages/syslinux.git) first removes the digits at the end of path and then if the path ends with [0-9]p it gets rid of 'p'.
>From bc7bd47deec56c4b3564ce2242d35effe2477f9f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?S=C5=82awomir=20Boche=C5=84ski?= <[email protected]> Date: Sat, 8 Feb 2014 23:14:53 +0100 Subject: [PATCH] extlinux.postinst: Support device names with digits There are many block devices for which the whole disk device contains digits in path, for example for MMC that would be /dev/mmcblk0. Partition device nodes for those are named by appending letter 'p' followed by a partition number, e.g. /dev/mmcblk0p1. --- debian/extlinux.postinst | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/debian/extlinux.postinst b/debian/extlinux.postinst index 0cb2c2f..784c696 100644 --- a/debian/extlinux.postinst +++ b/debian/extlinux.postinst @@ -20,7 +20,8 @@ case "${1}" in while true do - _DEVICE="$(findmnt --canonicalize --noheadings --output SOURCE --raw ${_PATH}/ | sed -e 's|[0-9]||g')" + _DEVICE="$(findmnt --canonicalize --noheadings --output SOURCE --raw ${_PATH}/ | + sed -r 's|[0-9]+$||;s|([0-9])p$|\1|')" if [ -n "${_DEVICE}" ] || [ -z "${_PATH}" ] then -- 1.7.9.5
