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DOLOCK(1) General Commands Manual DOLOCK(1)

dolock
lock port for concurrent builds

dolock [
-g group
] [
-m mode
] lockname [
comment ...
]

dolock creates a lock named lockname using open(2). If the lock is already held, it will display one single wait message on stderr, sleep and retry until satisfaction.
If necessary, creates the lock directory, using -m mode as a mode argument or the default if that option is not specified, and -g group as the group owner if that option is specified.
This implements a locking mechanism for ports building, see ‘LOCK INFRASTRUCTURE’ in ports(7) for details. See also dpb(1) for a complementary lock infrastructure when using dpb.
November 22, 2015 OpenBSD-current