diff options
Diffstat (limited to 'ipc/ipc_kmsg.c')
| -rw-r--r-- | ipc/ipc_kmsg.c | 107 |
1 files changed, 26 insertions, 81 deletions
diff --git a/ipc/ipc_kmsg.c b/ipc/ipc_kmsg.c index c0f07dd..cae700f 100644 --- a/ipc/ipc_kmsg.c +++ b/ipc/ipc_kmsg.c @@ -698,24 +698,14 @@ ipc_kmsg_copyin_header( if (!space->is_active) goto abort_async; - /* optimized ipc_entry_lookup */ - - { - mach_port_index_t index = MACH_PORT_INDEX(dest_name); - mach_port_gen_t gen = MACH_PORT_GEN(dest_name); - - if (index >= space->is_table_size) + entry = ipc_entry_lookup (space, dest_name); + if (entry == IE_NULL) goto abort_async; - - entry = &space->is_table[index]; bits = entry->ie_bits; - /* check generation number and type bit */ - - if ((bits & (IE_BITS_GEN_MASK|MACH_PORT_TYPE_SEND)) != - (gen | MACH_PORT_TYPE_SEND)) + /* check type bits */ + if (IE_BITS_TYPE (bits) != MACH_PORT_TYPE_SEND) goto abort_async; - } /* optimized ipc_right_copyin */ @@ -750,8 +740,6 @@ ipc_kmsg_copyin_header( case MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, MACH_MSG_TYPE_MAKE_SEND_ONCE): { - ipc_entry_num_t size; - ipc_entry_t table; ipc_entry_t entry; ipc_entry_bits_t bits; ipc_port_t dest_port, reply_port; @@ -762,51 +750,28 @@ ipc_kmsg_copyin_header( if (!space->is_active) goto abort_request; - size = space->is_table_size; - table = space->is_table; - - /* optimized ipc_entry_lookup of dest_name */ - - { - mach_port_index_t index = MACH_PORT_INDEX(dest_name); - mach_port_gen_t gen = MACH_PORT_GEN(dest_name); - - if (index >= size) + entry = ipc_entry_lookup (space, dest_name); + if (entry == IE_NULL) goto abort_request; - - entry = &table[index]; bits = entry->ie_bits; - /* check generation number and type bit */ - - if ((bits & (IE_BITS_GEN_MASK|MACH_PORT_TYPE_SEND)) != - (gen | MACH_PORT_TYPE_SEND)) + /* check type bits */ + if (IE_BITS_TYPE (bits) != MACH_PORT_TYPE_SEND) goto abort_request; - } assert(IE_BITS_UREFS(bits) > 0); dest_port = (ipc_port_t) entry->ie_object; assert(dest_port != IP_NULL); - /* optimized ipc_entry_lookup of reply_name */ - - { - mach_port_index_t index = MACH_PORT_INDEX(reply_name); - mach_port_gen_t gen = MACH_PORT_GEN(reply_name); - - if (index >= size) + entry = ipc_entry_lookup (space, reply_name); + if (entry == IE_NULL) goto abort_request; - - entry = &table[index]; bits = entry->ie_bits; - /* check generation number and type bit */ - - if ((bits & (IE_BITS_GEN_MASK|MACH_PORT_TYPE_RECEIVE)) != - (gen | MACH_PORT_TYPE_RECEIVE)) + /* check type bits */ + if (IE_BITS_TYPE (bits) != MACH_PORT_TYPE_RECEIVE) goto abort_request; - } reply_port = (ipc_port_t) entry->ie_object; assert(reply_port != IP_NULL); @@ -853,9 +818,6 @@ ipc_kmsg_copyin_header( } case MACH_MSGH_BITS(MACH_MSG_TYPE_MOVE_SEND_ONCE, 0): { - mach_port_index_t index; - mach_port_gen_t gen; - ipc_entry_t table; ipc_entry_t entry; ipc_entry_bits_t bits; ipc_port_t dest_port; @@ -869,24 +831,13 @@ ipc_kmsg_copyin_header( if (!space->is_active) goto abort_reply; - /* optimized ipc_entry_lookup */ - - table = space->is_table; - - index = MACH_PORT_INDEX(dest_name); - gen = MACH_PORT_GEN(dest_name); - - if (index >= space->is_table_size) + entry = ipc_entry_lookup (space, dest_name); + if (entry == IE_NULL) goto abort_reply; - - entry = &table[index]; bits = entry->ie_bits; - /* check generation number, collision bit, and type bit */ - - if ((bits & (IE_BITS_GEN_MASK|IE_BITS_COLLISION| - MACH_PORT_TYPE_SEND_ONCE)) != - (gen | MACH_PORT_TYPE_SEND_ONCE)) + /* check and type bits */ + if (IE_BITS_TYPE (bits) != MACH_PORT_TYPE_SEND_ONCE) goto abort_reply; /* optimized ipc_right_copyin */ @@ -910,12 +861,8 @@ ipc_kmsg_copyin_header( assert(dest_port->ip_sorights > 0); ip_unlock(dest_port); - /* optimized ipc_entry_dealloc */ - - entry->ie_next = table->ie_next; - table->ie_next = index; - entry->ie_bits = gen; entry->ie_object = IO_NULL; + ipc_entry_dealloc (space, dest_name, entry); is_write_unlock(space); msg->msgh_bits = (MACH_MSGH_BITS_OTHER(mbits) | @@ -1815,8 +1762,6 @@ ipc_kmsg_copyout_header( case MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND, MACH_MSG_TYPE_PORT_SEND_ONCE): { - ipc_entry_t table; - mach_port_index_t index; ipc_entry_t entry; ipc_port_t reply = (ipc_port_t) msg->msgh_local_port; mach_port_t dest_name, reply_name; @@ -1829,8 +1774,7 @@ ipc_kmsg_copyout_header( break; is_write_lock(space); - if (!space->is_active || - ((index = (table = space->is_table)->ie_next) == 0)) { + if (!space->is_active || space->is_table->ie_next == 0) { is_write_unlock(space); break; } @@ -1860,11 +1804,14 @@ ipc_kmsg_copyout_header( assert(reply->ip_sorights > 0); ip_unlock(reply); - /* optimized ipc_entry_get */ - - entry = &table[index]; - table->ie_next = entry->ie_next; - entry->ie_request = 0; + kern_return_t kr; + kr = ipc_entry_get (space, &reply_name, &entry); + if (kr) { + ip_unlock(reply); + ip_unlock(dest); + is_write_unlock(space); + break; + } { mach_port_gen_t gen; @@ -1872,8 +1819,6 @@ ipc_kmsg_copyout_header( assert((entry->ie_bits &~ IE_BITS_GEN_MASK) == 0); gen = entry->ie_bits + IE_BITS_GEN_ONE; - reply_name = MACH_PORT_MAKE(index, gen); - /* optimized ipc_right_copyout */ entry->ie_bits = gen | (MACH_PORT_TYPE_SEND_ONCE | 1); |