aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--man2/msgctl.218
1 files changed, 18 insertions, 0 deletions
diff --git a/man2/msgctl.2 b/man2/msgctl.2
index ac59ff8627..753f68acaf 100644
--- a/man2/msgctl.2
+++ b/man2/msgctl.2
@@ -139,6 +139,24 @@ struct ipc_perm {
.EE
.in
.PP
+The least significant 9 bits of the
+.I mode
+field of the
+.I ipc_perm
+structure define the access permissions for the message queue.
+The permission bits are as follows:
+.TS
+l l.
+0400 Read by user
+0200 Write by user
+0040 Read by group
+0020 Write by group
+0004 Read by others
+0002 Write by others
+.TE
+.PP
+Bits 0100, 0010, and 0001 (the execute bits) are unused by the system.
+.PP
Valid values for
.I cmd
are: