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authorDave Reisner <d@falconindy.com>2011-06-08 21:57:48 +0200
committerDave Reisner <dreisner@archlinux.org>2011-06-26 00:58:29 +0200
commitfb8efc7425fca4fed457ceb4ca7e474ee2ffe380 (patch)
tree299468d563f6fa8d2fe7ba049e37bb8d30a636dd /install/autodetect
parent18eb47e46e0630638011e05cd549ec5d8e0bf490 (diff)
downloadmkinitcpio-fb8efc7425fca4fed457ceb4ca7e474ee2ffe380.tar.gz
mkinitcpio-fb8efc7425fca4fed457ceb4ca7e474ee2ffe380.tar.xz
install/autodetect: refactor and simplify hook
Bashify and refactor to cut back on unnecessary churn. Since our {all,checked}_modules functions always return clean module names, we can add these directly to the autodetect file instead of aggregating them during the autodetect hook and then cleansing one at a time. There's a small speed increase here for the simplest code path. Signed-off-by: Dave Reisner <d@falconindy.com>
Diffstat (limited to 'install/autodetect')
-rw-r--r--install/autodetect91
1 files changed, 28 insertions, 63 deletions
diff --git a/install/autodetect b/install/autodetect
index b195913..7f22235 100644
--- a/install/autodetect
+++ b/install/autodetect
@@ -1,75 +1,40 @@
-# vim: set ft=sh:
+#!/bin/bash
-build()
-{
- MODULE_FILE="${TMPDIR}/autodetect_modules"
- #blegh, we'll let /tmp clean itself up
- AUTODETECT="$(auto_modules | \
- sed -e 's/ata_generic//g' -e 's/ide_generic//g')"
+build() {
+ MODULE_FILE=$TMPDIR/autodetect_modules
+ auto_modules | grep -xEv '(ata|ide)_generic' >"$MODULE_FILE"
- #Filesystem detection, only probe the device for /
- findfs ()
- {
- local rootdev
-
- if [ -f /proc/self/mountinfo -a -x /bin/findmnt ]; then
- /bin/findmnt -n -u -o fstype / 2>/dev/null
- fi
- }
+ if [[ ! -d /sys/devices ]]; then
+ error "/sys does not appear to be mounted. Unable to use autodetection"
+ return 1
+ fi
- if [ ${UID} -eq 0 -o "$(groups | grep disk)" != "" ]; then
- fss=$(findfs | sort | uniq)
- if [ -z "${fss}" ]; then
- error "Root file system type detection failed."
- autodetect_fs_detection_failed=1
- fi
- for fs in ${fss}; do
- allfs="${fs} $(modprobe --set-version ${KERNELVERSION} --resolve-alias ${fs})"
- for mod in ${allfs}; do
- for modfile in $(find "${MODULEDIR}" -type f -name "${mod}.ko" -or -name "${mod}.ko.gz"); do
- if [ -n "${modfile}" ]; then
- AUTODETECT="${AUTODETECT} ${modfile}"
- fi
- done
- done
- done
+ if ! findmnt -uno fstype "${BASEDIR:-/}" >>"$MODULE_FILE"; then
+ error "failed to detect root filesystem"
+ fs_autodetect_failed=1
+ fi
- if [ -e /sbin/mdadm ]; then
- for raidmod in $(/sbin/mdadm -E -s -v /dev/hd* /dev/sd* /dev/rd/* /dev/ida/* /dev/cciss/* /dev/ataraid/* /dev/mapper/* \
- | awk -Flevel= '{print $2}' | awk '{print $1}'); do
- case "${raidmod}" in
- raid4|raid5|raid6)
- AUTODETECT="${AUTODETECT} raid456" ;;
- *)
- AUTODETECT="${AUTODETECT} ${raidmod}" ;;
- esac
- done
+ if (( UID == 0 )) || in_array 'disk' $(groups); then
+ if [[ -x /sbin/mdadm ]]; then
+ /sbin/mdadm -Esv /dev/[hrsv]d* /dev/{ida,cciss,ataraid,mapper}/* |
+ sed -n 's/.*level=\([^ ]\+\) .*/\1/p' |
+ sed 's/\<raid[456]\>/raid456/g' | sort -u >>"$MODULE_FILE"
fi
else
- autodetect_fs_detection_failed=1
- autodetect_raid_detection_failed=1
- error "User does not have proper permissions to read superblocks, raid and filesystem modules are not detected"
+ error "Insufficient permission to perform autodetection for mdadm devices"
+ raid_autodetect_failed=1
fi
-
- for m in ${AUTODETECT}; do
- modname="$(get_module_name "${m}")"
- echo "${modname}" >> "${MODULE_FILE}"
- done
-
- BINARIES=""
- FILES=""
- SCRIPT=""
}
-help ()
-{
-cat <<HELPEOF
- This hook shrinks your initramdisk to a smaller size
- by autodetecting your needed modules. Be sure to verify
- included modules are correct and none are missing.
- This hook must be run before other subsystem hooks in
- order to take advantage of auto-detection. Any hooks
- placed before 'autodetect' will be installed in full.
+help() {
+ cat <<HELPEOF
+This hook shrinks your initramdisk to a smaller size by autodetecting your
+needed modules. Be sure to verify included modules are correct and none are
+missing. This hook must be run before other subsystem hooks in order to take
+advantage of auto-detection. Any hooks placed before 'autodetect' will be
+installed in full.
HELPEOF
}
+
+# vim: set ft=sh ts=4 sw=4 et: