1 /*
2 * Copyright (c) 2016-2020 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29 #include <sys/types.h>
30 #include <sys/kernel_types.h>
31 #include <sys/errno.h>
32 #include <sys/kernel.h>
33 #include <sys/file_internal.h>
34 #include <sys/proc_info.h>
35 #include <sys/sys_domain.h>
36 #include <sys/kern_event.h>
37 #include <string.h>
38 #include <skywalk/os_skywalk_private.h>
39
40 static uint32_t
ch_mode_to_flags(uint32_t ch_mode)41 ch_mode_to_flags(uint32_t ch_mode)
42 {
43 uint32_t flags = 0;
44
45 if ((ch_mode & CHMODE_MONITOR_RX) != 0) {
46 flags |= PROC_CHANNEL_FLAGS_MONITOR_RX;
47 }
48 if ((ch_mode & CHMODE_MONITOR_TX) != 0) {
49 flags |= PROC_CHANNEL_FLAGS_MONITOR_TX;
50 }
51 if ((ch_mode & CHMODE_MONITOR_NO_COPY) != 0) {
52 flags |= PROC_CHANNEL_FLAGS_MONITOR_NO_COPY;
53 }
54 if ((ch_mode & CHMODE_EXCLUSIVE) != 0) {
55 flags |= PROC_CHANNEL_FLAGS_EXCLUSIVE;
56 }
57 if ((ch_mode & CHMODE_USER_PACKET_POOL) != 0) {
58 flags |= PROC_CHANNEL_FLAGS_USER_PACKET_POOL;
59 }
60 if ((ch_mode & CHMODE_DEFUNCT_OK) != 0) {
61 flags |= PROC_CHANNEL_FLAGS_DEFUNCT_OK;
62 }
63 if ((ch_mode & CHMODE_LOW_LATENCY) != 0) {
64 flags |= PROC_CHANNEL_FLAGS_LOW_LATENCY;
65 }
66 return flags;
67 }
68
69 errno_t
fill_channelinfo(struct kern_channel * channel,struct proc_channel_info * info)70 fill_channelinfo(struct kern_channel *channel, struct proc_channel_info *info)
71 {
72 errno_t error = 0;
73 struct kern_nexus *nexus;
74
75 lck_mtx_lock(&channel->ch_lock);
76 uuid_copy(info->chi_instance, channel->ch_info->cinfo_nx_uuid);
77 info->chi_port = channel->ch_info->cinfo_nx_port;
78 info->chi_flags = ch_mode_to_flags(channel->ch_info->cinfo_ch_mode);
79 nexus = channel->ch_nexus;
80 if (nexus != NULL) {
81 struct kern_nexus_provider *nx_prov = nexus->nx_prov;
82 if (nx_prov != NULL) {
83 struct kern_nexus_domain_provider *dom_prov;
84 dom_prov = nx_prov->nxprov_dom_prov;
85 if (dom_prov != NULL) {
86 struct nxdom *dom;
87 dom = dom_prov->nxdom_prov_dom;
88 if (dom != NULL) {
89 info->chi_type = dom->nxdom_type;
90 }
91 }
92 }
93 }
94 lck_mtx_unlock(&channel->ch_lock);
95 return error;
96 }
97