Nicolai,
On 4/10/19 12:21 PM, Nicolai Dagestad wrote:
This patch documents SHM_R and SHM_W.
It is made in a similar ways to how the mode flags are described in open.2.
--- shmget.2 2019-03-06 17:18:27.000000000 +0100
+++ shmget.2.new 2019-04-10 12:16:35.855032188 +0200
@@ -172,6 +172,17 @@
argument of
.BR open (2).
Presently, execute permissions are not used by the system.
+
+The following symbolic constants are provided for mode.
+Theese can be
+.BR OR 'ed
+together, shifting them right by 3 set the mode for the group, and by 6
set the mode for others.
+.TP
+.B SHM_R
+0400 user has read permission
+.TP
+.B SHM_W
+0200 user has write permission
.PP
When a new shared memory segment is created,
its contents are initialized to zero values, and
These constants exist (and I think they even exist on some other
implementations), but aren't in POSIX, and so I'm not sure it's
sensible to document them. Or, to put things another way, why do
you think they should be documented?
Thanks,
Michael
