diff options
Diffstat (limited to 'lib/libc/sys/shmat.2')
| -rw-r--r-- | lib/libc/sys/shmat.2 | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/lib/libc/sys/shmat.2 b/lib/libc/sys/shmat.2 index 960fe6759b6..8e20b9d4650 100644 --- a/lib/libc/sys/shmat.2 +++ b/lib/libc/sys/shmat.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: shmat.2,v 1.7 1999/05/27 16:54:23 aaron Exp $ +.\" $OpenBSD: shmat.2,v 1.8 1999/06/29 14:10:19 aaron Exp $ .\" $NetBSD: shmat.2,v 1.2 1997/03/27 08:20:38 mikel Exp $ .\" .\" Copyright (c) 1995 Frank van der Linden @@ -56,15 +56,21 @@ parameter. If it is equal to 0, the system will pick an address itself. Otherwise, an attempt is made to map the shared memory segment at the address .Fa shmaddr -specifies. If SHM_RND is set in +specifies. If +.Dv SHM_RND +is set in .Fa shmflg , -the system will round the address down to a multiple of SHMLBA bytes -(SHMLBA is defined in +the system will round the address down to a multiple of +.Dv SHMLBA +bytes +.Pf ( Dv SHMLBA +is defined in .Aq Pa sys/shm.h ). .Pp A shared memory segment can be mapped read-only by specifying the -SHM_RDONLY flag in +.Dv SHM_RDONLY +flag in .Fa shmflg . .Pp .Fn shmdt @@ -83,9 +89,9 @@ command. .Sh RETURN VALUES .Fn shmat returns the address at which the shared memory segment has been mapped into -the calling process' address space when successful, +the calling process' address space when successful, .Fn shmdt -returns 0 on successful completion. Otherwise, a value of -1 is returned, +returns 0 on successful completion. Otherwise, a value of \-1 is returned, and the global variable .Va errno is set to indicate the error. |