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Diffstat (limited to 'doc/mach.texi')
| -rw-r--r-- | doc/mach.texi | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/mach.texi b/doc/mach.texi index 3175df1..671e0d0 100644 --- a/doc/mach.texi +++ b/doc/mach.texi @@ -1330,6 +1330,15 @@ which is conventionally used as a reply port by the recipient of the message. The field must carry a send right, a send-once right, @code{MACH_PORT_NULL}, or @code{MACH_PORT_DEAD}. +@item unsigned long msgh_protected_payload +The @code{msgh_protected_payload} field carries a payload that is set +by the kernel during message delivery. The payload is an opaque +identifier that can be used by the receiver to lookup the associated +data structure. + +It is only valid in received messages. See @ref{Message Receive} for +further information. + @item mach_port_seqno_t msgh_seqno The @code{msgh_seqno} field provides a sequence number for the message. It is only valid in received messages; its value in sent messages is |