LOCKDEV(8)LOCKDEV(8)NAMElockdev demonstrates functionality of liblockdev library.
SYNOPSIS
/usr/sbin/lockdev [<operation>] <device>
DESCRIPTION
The lockdev command can perform one of the following operations:
-l - lock device with dev_lock() function
-u - unlock device with dev_unlock() function
no operation - test lock with dev_testlock() function
RETURN VALUES
Value dev_lock dev_unlock dev_testlock
0 OK OK not locked
1 locked other locked other locked
2 EACCES
3 EROFS
4 EFAULT
5 EINVAL
6 ENAMETOOLONG
7 ENOENT
8 ENOTDIR
9 ENOMEM
10 ELOOP
11 EIO
255 error error error
SEE ALSOlockdev(3).
SEPTEMBER 2009 LOCKDEV(8)