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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2020-02-25 16:29:19 +0100 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2020-02-25 16:53:25 +0100 |
| commit | a63243b9e2ae4c704b3a781bc35a802be41d7dd9 (patch) | |
| tree | b75ce90d4a410b796172e3de1081f8b9e560fef8 /man2/msgctl.2 | |
| parent | cce90cf33ae6094832725c40c649b7dd0dcdf0d1 (diff) | |
| download | man-pages-a63243b9e2ae4c704b3a781bc35a802be41d7dd9.tar.gz | |
msgctl.2: Add information on permission bits (based on sysvipc(7) text)
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Diffstat (limited to 'man2/msgctl.2')
| -rw-r--r-- | man2/msgctl.2 | 18 |
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: |