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Harden testing of /proc being valid

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This commit is contained in:
Roy Marples 2007-05-23 14:12:06 +00:00
parent f754cfd2a9
commit d94d68767a
1 changed files with 19 additions and 1 deletions
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20
sh.Linux/init.sh
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@ -100,7 +100,24 @@ fi
check_statedir /proc check_statedir /proc
# By default VServer already has /proc mounted, but OpenVZ does not! # By default VServer already has /proc mounted, but OpenVZ does not!
if [ ! -e /proc/self/stat ] ; then # However, some of our users have an old proc image in /proc
# NFC how they managed that, but the end result means we have to test if
# /proc actually works or not. We to this by comparing uptime to one a second
# ago
mountproc=true
if [ -e /proc/uptime ] ; then
up="$(cat /proc/uptime)"
sleep 1
if [ "${up}" = "$(cat /proc/uptime)" ] ; then
eerror "You have cruft in /proc that should be deleted"
else
einfo "/proc is already mounted, skipping"
mountproc=false
fi
unset up
fi
if ${mountproc} ; then
procfs="proc" procfs="proc"
[ "${RC_UNAME}" = "GNU/kFreeBSD" ] && proc="linprocfs" [ "${RC_UNAME}" = "GNU/kFreeBSD" ] && proc="linprocfs"
ebegin "Mounting ${procfs} at /proc" ebegin "Mounting ${procfs} at /proc"
@ -108,6 +125,7 @@ if [ ! -e /proc/self/stat ] ; then
try mount -n ${mntcmd:--t ${procfs} -o noexec,nosuid,nodev proc /proc} try mount -n ${mntcmd:--t ${procfs} -o noexec,nosuid,nodev proc /proc}
eend $? eend $?
fi fi
unset mountproc
# Read off the kernel commandline to see if there's any special settings # Read off the kernel commandline to see if there's any special settings
# especially check to see if we need to set the CDBOOT environment variable # especially check to see if we need to set the CDBOOT environment variable