diff options
Diffstat (limited to 'main/xen/xen-hotplug-lockfd.patch')
| -rw-r--r-- | main/xen/xen-hotplug-lockfd.patch | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/main/xen/xen-hotplug-lockfd.patch b/main/xen/xen-hotplug-lockfd.patch new file mode 100644 index 0000000000..2f91889948 --- /dev/null +++ b/main/xen/xen-hotplug-lockfd.patch @@ -0,0 +1,24 @@ +We remove the perl snippet to verify the lockfile with lockfd to +avoid perl dependency + +use a tiny C app to do the same job. + +--- ./tools/hotplug/Linux/locking.sh.orig ++++ ./tools/hotplug/Linux/locking.sh +@@ -51,14 +51,8 @@ + # actually a synthetic symlink in /proc and we aren't + # guaranteed that our stat(2) won't lose the race with an + # rm(1) between reading the synthetic link and traversing the +- # file system to find the inum. Perl is very fast so use that. +- rightfile=$( perl -e ' +- open STDIN, "<&'$_lockfd'" or die $!; +- my $fd_inum = (stat STDIN)[1]; die $! unless defined $fd_inum; +- my $file_inum = (stat $ARGV[0])[1]; +- print "y\n" if $fd_inum eq $file_inum; +- ' "$_lockfile" ) +- if [ x$rightfile = xy ]; then break; fi ++ # file system to find the inum. We use tiny C file for that ++ if /usr/lib/xen/bin/xen-fd-is-file $_lockfd $_lockfile; then break; fi + # Some versions of bash appear to be buggy if the same + # $_lockfile is opened repeatedly. Close the current fd here. + eval "exec $_lockfd<&-" |