RepoMirrors
/
mars
mirror of https://github.com/schoebel/mars
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

marsadm: check block device for exclusive access in {create,join}-resource

This commit is contained in:
Thomas Schoebel-Theuer 2013-06-06 11:21:28 +02:00
parent 84bb63ccc8
commit 15c76e9ffb
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
userspace/marsadm
View File

@ -813,8 +813,8 @@ sub create_res {
my $size = 0;
if (-b $dev) {
ldie "block device '$dev' must be an absolute path starting with '/'\n" unless $dev =~ m/^\//;
use Fcntl 'SEEK_END';
open(TEST, "<$dev") or ldie "cannot open device for reading\n";
use Fcntl 'SEEK_END', 'O_RDWR', 'O_EXCL';
sysopen(TEST, $dev, O_RDWR|O_EXCL) or ldie "cannot open device '$dev' for exclusive rw access\n";
$size = sysseek(TEST, 0, SEEK_END);
close(TEST);
lprint "block device '$dev': determined size = $size bytes\n";