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-rw-r--r--lib/libc/sys/shmctl.211
1 files changed, 7 insertions, 4 deletions
diff --git a/lib/libc/sys/shmctl.2 b/lib/libc/sys/shmctl.2
index 98ddf13e8ec4..788e79f1900d 100644
--- a/lib/libc/sys/shmctl.2
+++ b/lib/libc/sys/shmctl.2
@@ -25,7 +25,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd July 17, 1995
+.Dd October 10, 2015
.Dt SHMCTL 2
.Os
.Sh NAME
@@ -72,15 +72,18 @@ or it must have superuser privileges.
.It Dv IPC_RMID
Removes the segment from the system.
The removal will not take
-effect until all processes having attached the segment have exited;
-however, once the IPC_RMID operation has taken place, no further
-processes will be allowed to attach the segment.
+effect until all processes having attached the segment have exited.
For the operation
to succeed, the calling process's effective uid must match
.Fa shm_perm.uid
or
.Fa shm_perm.cuid ,
or the process must have superuser privileges.
+If the
+.Va kern.ipc.shm_allow_removed
+.Xr sysctl 3
+variable is set to 0, once the IPC_RMID operation has taken place,
+no further processes will be allowed to attach the segment.
.\" .It Dv SHM_LOCK
.\" Locks the segment in memory. The calling process must have
.\" superuser privileges. Not implemented in FreeBSD.