bsd/net/multi_layer_pkt_log.c

   1 /*
   2  * Copyright (c) 2018-2019 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
  30 #include <sys/sysctl.h>
  31 #include <sys/proc.h>
  32 #include <net/multi_layer_pkt_log.h>
  33
  34 SYSCTL_NODE(_net, OID_AUTO, mpklog,
  35     CTLFLAG_RW | CTLFLAG_LOCKED, 0, "Multi-layer packet logging");
  36
  37 /*
  38  * Note:  net_mpklog_enabled allows to override the interface flags IFXF_MPK_LOG
  39  */
  40 int net_mpklog_enabled = 1;
  41 static int sysctl_net_mpklog_enabled SYSCTL_HANDLER_ARGS;
  42 SYSCTL_PROC(_net_mpklog, OID_AUTO, enabled, CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW,
  43     0, 0, &sysctl_net_mpklog_enabled, "I", "Multi-layer packet logging enabled");
  44
  45 static int sysctl_net_mpklog_type SYSCTL_HANDLER_ARGS;
  46 uint8_t net_mpklog_type =  OS_LOG_TYPE_DEFAULT;
  47 SYSCTL_PROC(_net_mpklog, OID_AUTO, type, CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW,
  48     0, 0, &sysctl_net_mpklog_type, "I", "Multi-layer packet logging type");
  49
  50 SYSCTL_INT(_net_mpklog, OID_AUTO, version, CTLFLAG_RD | CTLFLAG_LOCKED,
  51     (int *)NULL, MPKL_VERSION, "Multi-layer packet logging version");
  52
  53 static int
  54 sysctl_net_mpklog_enabled SYSCTL_HANDLER_ARGS
  55 {
  56 #pragma unused(arg1, arg2)
  57         int value = net_mpklog_enabled;
  58
  59         int error = sysctl_handle_int(oidp, &value, 0, req);
  60         if (error || !req->newptr) {
  61                 return error;
  62         }
  63
  64         net_mpklog_enabled = (value == 0) ? 0 : 1;
  65
  66         os_log(OS_LOG_DEFAULT, "%s:%d set net_mpklog_enabled to %d",
  67             proc_best_name(current_proc()), proc_selfpid(), net_mpklog_enabled);
  68
  69         return 0;
  70 }
  71
  72 static int
  73 sysctl_net_mpklog_type SYSCTL_HANDLER_ARGS
  74 {
  75 #pragma unused(arg1, arg2)
  76         int value = net_mpklog_type;
  77
  78         int error = sysctl_handle_int(oidp, &value, 0, req);
  79         if (error || !req->newptr) {
  80                 return error;
  81         }
  82
  83         if (value != OS_LOG_TYPE_DEFAULT &&
  84             value != OS_LOG_TYPE_INFO) {
  85                 return EINVAL;
  86         }
  87         net_mpklog_type = (uint8_t)value;
  88
  89         os_log(OS_LOG_DEFAULT, "%s:%d set net_mpklog_type to %u (%s)",
  90             proc_best_name(current_proc()), proc_selfpid(), net_mpklog_type,
  91             net_mpklog_type == OS_LOG_TYPE_DEFAULT ? "default" : "info");
  92
  93         return 0;
  94 }