[Pkg-sysvinit-devel] Bug#418445: initscripts: please mount debugfs on boot

[Bas Zoetekouw]

tag 418445 + patch
thanks

Hi!

> Please mount debugfs (/sys/kernel/debug) on boot if it is available in
> the kernel.  It is required for blktrace, which I'm uploading to
> unstable soon (currently in experimental).  It would be great if we
> could make blktrace work out of the box in a default debian system.

Attached is a patch that fixes this.  It only mounts debugfs if the
kernel has support, and if sysfs is also mounted.


diff -Nabur sysvinit-2.86.ds1.eerst/debian/initscripts/etc/init.d/mountkernfs.sh sysvinit-2.86.ds1/debian/initscripts/etc/init.d/mountkernfs.sh
--- sysvinit-2.86.ds1.eerst/debian/initscripts/etc/init.d/mountkernfs.sh	2007-07-25 12:36:09.000000000 +0200
+++ sysvinit-2.86.ds1/debian/initscripts/etc/init.d/mountkernfs.sh	2007-07-25 12:59:35.314049007 +0200
@@ -41,6 +41,12 @@
 	if grep -E -qs "sysfs\$" /proc/filesystems
 	then
 		domount sysfs "" /sys sysfs -onodev,noexec,nosuid
+
+		# only mount debugfs if we have sysfs and debugfs 
+		if grep -E -qs "debugfs\$" /proc/filesystems
+		then
+			domount debugfs "" /sys/kernel/debug debugfs -onodev,noexec,nosuid
+		fi
 	fi
 
 	# Mount /var/run and /var/lock as tmpfs if enabled
diff -Nabur sysvinit-2.86.ds1.eerst/debian/initscripts/etc/init.d/umountfs sysvinit-2.86.ds1/debian/initscripts/etc/init.d/umountfs
--- sysvinit-2.86.ds1.eerst/debian/initscripts/etc/init.d/umountfs	2007-07-25 12:36:09.000000000 +0200
+++ sysvinit-2.86.ds1/debian/initscripts/etc/init.d/umountfs	2007-07-25 12:42:06.189913283 +0200
@@ -66,7 +66,7 @@
 	while read DEV MTPT FSTYPE REST
 	do
 		case "$MTPT" in
-		  /|/proc|/dev|/.dev|/dev/pts|/dev/shm|/dev/.static/dev|/proc/*|/sys|/lib/init/rw)
+		  /|/proc|/dev|/.dev|/dev/pts|/dev/shm|/dev/.static/dev|/proc/*|/sys|/sys/kern/debug|/lib/init/rw)
 			continue
 			;;
 		  /var/run)
@@ -81,7 +81,7 @@
 			;;
 		esac
 		case "$FSTYPE" in 
-		  proc|procfs|linprocfs|devfs|sysfs|usbfs|usbdevfs|devpts)
+		  proc|procfs|linprocfs|devfs|sysfs|usbfs|usbdevfs|devpts|debugfs)
 			continue
 			;;
 		  tmpfs)

-- 
Kind regards,
+--------------------------------------------------------------------+
| Bas Zoetekouw              | GPG key: 0644fab7                     |
|----------------------------| Fingerprint: c1f5 f24c d514 3fec 8bf6 |
| bas at debian.org             |              a2b1 2bae e41f 0644 fab7 |
+--------------------------------------------------------------------+