commit 2b945b6bc9e04ea15e0691fe228276297f993e8b
Author: Elan Ruusamäe <[email protected]>
Date: Thu Jan 16 23:03:52 2014 +0200
add messages to dmesg about geninitrd startup and when it switches root
geninitrd | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
---
diff --git a/geninitrd b/geninitrd
index fe7e13e..44b254b 100755
--- a/geninitrd
+++ b/geninitrd
@@ -86,6 +86,25 @@ debug() {
[ x"$verbose" = x"-v -v" ] && msg "$*" >&3
}
+# add initrd code to print to kmsg
+# @param string message
+# @param int loglevel. defaults to "6" (info)
+# Log levels can be:
+# Name String Meaning
+# KERN_EMERG "0" Emergency messages, system is about to crash or is
unstable
+# KERN_ALERT "1" Something bad happened and action must be taken
immediately
+# KERN_CRIT "2" A critical condition occurred like a serious
hardware/software failure
+# KERN_ERR "3" An error condition, often used by drivers to indicate
difficulties with the hardware
+# KERN_WARNING "4" A warning, meaning nothing serious by itself but might
indicate problems
+# KERN_NOTICE "5" Nothing serious, but notably nevertheless. Often used
to report security events.
+# KERN_INFO "6" Informational message e.g. startup information at
driver initialization
+# KERN_DEBUG "7" Debug messages
+# KERN_CONT "c" "continued" line of log printout (only done after a
line that had no enclosing \n)
+kmsg() {
+ local msg="$1" level=${2:-6}
+ echo "echo '<$level>$msg' > /dev/kmsg" | add_linuxrc
+}
+
# aborts program abnormally
die() {
local rc=${2:-1}
@@ -956,8 +975,11 @@ initrd_gen_initramfs_switchroot() {
echo "Last 20 lines of dmesg:"
dmesg | tail -n 20
fi
+
EOF
+ kmsg "geninitrd/$VERSION switching root"
+
umount_all
busybox_applet switch_root usleep
add_linuxrc <<-'EOF'
@@ -1423,6 +1445,7 @@ mknod -m 666 "$DESTDIR/dev/null" c 1 3
mknod -m 666 "$DESTDIR/dev/zero" c 1 5
mknod -m 666 "$DESTDIR/dev/random" c 1 8
mknod -m 666 "$DESTDIR/dev/urandom" c 1 9
+mknod -m 644 "$DESTDIR/dev/kmsg" c 1 11
inst_exec $busybox /bin/busybox
ln -s busybox $DESTDIR/bin/sh
@@ -1436,6 +1459,9 @@ add_linuxrc <<EOF
EOF
mount_proc
+
+kmsg "geninitrd/$VERSION starting"
+
add_linuxrc <<-EOF
# builtin defaults from geninitrd
ROOT=$rootdev
================================================================
---- gitweb:
http://git.pld-linux.org/gitweb.cgi/projects/geninitrd.git/commitdiff/2b945b6bc9e04ea15e0691fe228276297f993e8b
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