diff options
Diffstat (limited to 'mach/msg-destroy.c')
| -rw-r--r-- | mach/msg-destroy.c | 100 |
1 files changed, 95 insertions, 5 deletions
diff --git a/mach/msg-destroy.c b/mach/msg-destroy.c index 1e618df0bf..9ecbdc0512 100644 --- a/mach/msg-destroy.c +++ b/mach/msg-destroy.c @@ -26,6 +26,15 @@ /* * HISTORY * $Log$ + * Revision 1.6 2002/02/17 07:13:36 roland + * 2002-02-16 Roland McGrath <roland@frob.com> + * + * * mach/msg-destroy.c (__mach_msg_destroy) [MACH_MSG_PORT_DESCRIPTOR]: + * Grok the OSF flavor of message format. + * (mach_msg_destroy_port): For MAKE_SEND and + * MAKE_SEND_ONCE rights, create an destroy a right to ensure proper + * no-senders notification. + * * Revision 1.5 1997/06/21 01:40:07 drepper * More 64bit changes. * @@ -91,6 +100,69 @@ __mach_msg_destroy(msg) mach_msg_destroy_port(msg->msgh_remote_port, MACH_MSGH_BITS_REMOTE(mbits)); if (mbits & MACH_MSGH_BITS_COMPLEX) { +#ifdef MACH_MSG_PORT_DESCRIPTOR + mach_msg_body_t *body; + mach_msg_descriptor_t *saddr, *eaddr; + + body = (mach_msg_body_t *) (msg + 1); + saddr = (mach_msg_descriptor_t *) + ((mach_msg_base_t *) msg + 1); + eaddr = saddr + body->msgh_descriptor_count; + + for ( ; saddr < eaddr; saddr++) { + switch (saddr->type.type) { + + case MACH_MSG_PORT_DESCRIPTOR: { + mach_msg_port_descriptor_t *dsc; + + /* + * Destroy port rights carried in the message + */ + dsc = &saddr->port; + mach_msg_destroy_port(dsc->name, dsc->disposition); + break; + } + + case MACH_MSG_OOL_DESCRIPTOR : { + mach_msg_ool_descriptor_t *dsc; + + /* + * Destroy memory carried in the message + */ + dsc = &saddr->out_of_line; + if (dsc->deallocate) { + mach_msg_destroy_memory((vm_offset_t)dsc->address, + dsc->size); + } + break; + } + + case MACH_MSG_OOL_PORTS_DESCRIPTOR : { + mach_port_t *ports; + mach_msg_ool_ports_descriptor_t *dsc; + mach_msg_type_number_t j; + + /* + * Destroy port rights carried in the message + */ + dsc = &saddr->ool_ports; + ports = (mach_port_t *) dsc->address; + for (j = 0; j < dsc->count; j++, ports++) { + mach_msg_destroy_port(*ports, dsc->disposition); + } + + /* + * Destroy memory carried in the message + */ + if (dsc->deallocate) { + mach_msg_destroy_memory((vm_offset_t)dsc->address, + dsc->count * sizeof(mach_port_t)); + } + break; + } + } + } +#else vm_offset_t saddr; vm_offset_t eaddr; @@ -142,6 +214,7 @@ __mach_msg_destroy(msg) saddr += sizeof(vm_offset_t); } } +#endif } } @@ -153,15 +226,32 @@ mach_msg_destroy_port(port, type) mach_msg_type_name_t type; { if (MACH_PORT_VALID(port)) switch (type) { - case MACH_MSG_TYPE_PORT_SEND: - case MACH_MSG_TYPE_PORT_SEND_ONCE: - (void) __mach_port_deallocate(__mach_task_self(), port); + case MACH_MSG_TYPE_MOVE_SEND: + case MACH_MSG_TYPE_MOVE_SEND_ONCE: + /* destroy the send/send-once right */ + (void) __mach_port_deallocate(mach_task_self(), port); break; - case MACH_MSG_TYPE_PORT_RECEIVE: - (void) __mach_port_mod_refs(__mach_task_self(), port, + case MACH_MSG_TYPE_MOVE_RECEIVE: + /* destroy the receive right */ + (void) __mach_port_mod_refs(mach_task_self(), port, MACH_PORT_RIGHT_RECEIVE, -1); break; + + case MACH_MSG_TYPE_MAKE_SEND: + /* create a send right and then destroy it */ + (void) __mach_port_insert_right(mach_task_self(), port, + port, MACH_MSG_TYPE_MAKE_SEND); + (void) __mach_port_deallocate(mach_task_self(), port); + break; + + case MACH_MSG_TYPE_MAKE_SEND_ONCE: + /* create a send-once right and then destroy it */ + (void) __mach_port_extract_right(mach_task_self(), port, + MACH_MSG_TYPE_MAKE_SEND_ONCE, + &port, &type); + (void) __mach_port_deallocate(mach_task_self(), port); + break; } } |