diff options
| author |   aaron <aaron@openbsd.org> | 2000-10-18 05:12:06 +0000 |
|---|---|---|
| committer | aaron <aaron@openbsd.org> | 2000-10-18 05:12:06 +0000 |
| commit | ea418ffe85da8239e30bb1c3e28466cf6b8f685e (patch) | |
| tree | 01651b197bba18ec88ec6a378fec58207d2f3632 /lib/libc/sys/flock.2 | |
| parent | get the bounds checking right for the data used in copyout() in several (diff) | |
| download | wireguard-openbsd-ea418ffe85da8239e30bb1c3e28466cf6b8f685e.tar.xz wireguard-openbsd-ea418ffe85da8239e30bb1c3e28466cf6b8f685e.zip | |
Another round of man page cleanup, this time to remove more hard sentence
breaks and getting rid of short lines, making these files easier to work with.
Diffstat (limited to 'lib/libc/sys/flock.2')
| -rw-r--r-- | lib/libc/sys/flock.2 | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/lib/libc/sys/flock.2 b/lib/libc/sys/flock.2 index e59e47e46a3..27e66928fe3 100644 --- a/lib/libc/sys/flock.2 +++ b/lib/libc/sys/flock.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: flock.2,v 1.11 1999/06/29 14:09:54 aaron Exp $ +.\" $OpenBSD: flock.2,v 1.12 2000/10/18 05:12:09 aaron Exp $ .\" $NetBSD: flock.2,v 1.5 1995/02/27 12:32:32 cgd Exp $ .\" .\" Copyright (c) 1983, 1991, 1993 @@ -63,8 +63,7 @@ or .Dv LOCK_EX with the optional addition of .Dv LOCK_NB . -To unlock -an existing lock +To unlock an existing lock .Dv operation should be .Dv LOCK_UN . @@ -91,26 +90,25 @@ the appropriate lock type; this results in the previous lock being released and the new lock applied (possibly after other processes have gained and released the lock). .Pp -Requesting a lock on an object that is already locked -normally causes the caller to be blocked until the lock may be -acquired. If +Requesting a lock on an object that is already locked normally causes +the caller to be blocked until the lock may be acquired. +If .Dv LOCK_NB is included in .Fa operation , -then this will not happen; instead the call will fail and -the error +then this will not happen; instead the call will fail and the error .Er EWOULDBLOCK will be returned. .Sh NOTES -Locks are on files, not file descriptors. That is, file descriptors -duplicated through +Locks are on files, not file descriptors. +That is, file descriptors duplicated through .Xr dup 2 or .Xr fork 2 do not result in multiple instances of a lock, but rather multiple -references to a single lock. If a process holding a lock on a file -forks and the child explicitly unlocks the file, the parent will -lose its lock. +references to a single lock. +If a process holding a lock on a file forks and the child explicitly +unlocks the file, the parent will lose its lock. .Pp Processes blocked awaiting a lock may be awakened by signals. .Sh RETURN VALUES |