1 /************************************************************************ 2 Copyright (c) 2015, The Linux Foundation. All rights reserved. 3 4 Redistribution and use in source and binary forms, with or without 5 modification, are permitted provided that the following conditions are 6 met: 7 * Redistributions of source code must retain the above copyright 8 notice, this list of conditions and the following disclaimer. 9 * Redistributions in binary form must reproduce the above 10 copyright notice, this list of conditions and the following 11 disclaimer in the documentation and/or other materials provided 12 with the distribution. 13 * Neither the name of The Linux Foundation nor the names of its 14 contributors may be used to endorse or promote products derived 15 from this software without specific prior written permission. 16 17 THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 ************************************************************************/ 29 30 #include <unistd.h> 31 #include <errno.h> 32 #include <stdio.h> 33 #include <string.h> 34 #include <stdlib.h> 35 #include <fcntl.h> 36 #include <sys/types.h> 37 #include <sys/wait.h> 38 #include <sys/stat.h> 39 40 #include "datatop_interface.h" 41 #include "datatop_fileops.h" 42 #include "datatop_str.h" 43 #include "datatop_opt.h" 44 45 #define DTOP_SNAP_SIZE 8192 46 #define DTOP_SNAP_LINE (DTOP_SNAP_SIZE>>2) 47 48 static int dtop_system_snapshot_helper_print(char *file, const char *str) 49 { 50 FILE *snap_file = fopen(file, "a"); 51 52 if (snap_file) { 53 if (fprintf(snap_file, "%s", str) < 0) { 54 fclose(snap_file); 55 return FILE_ERROR; 56 } 57 } else { 58 return FILE_ERROR; 59 } 60 fflush(snap_file); 61 fclose(snap_file); 62 return FILE_SUCCESS; 63 } 64 65 /** 66 * @brief A helper function to dtop_print_system_snapshot. 67 * 68 * @param fw File that desired system data is printed to. 69 * @return FILE_ERROR - Writing to file was unsuccessful. 70 * @return FILE_SUCCESS - Writing to file was successful. 71 */ 72 static int dtop_run_and_log(char *file, const char *c1, const char **args) 73 { 74 int i; 75 pid_t child_pid; 76 77 i = 0; 78 dtop_system_snapshot_helper_print(file, "\n" 79 "--------------------------------------------------------------\n" 80 "Command: "); 81 while(args[i] != 0) { 82 dtop_system_snapshot_helper_print(file, args[i++]); 83 dtop_system_snapshot_helper_print(file, " "); 84 } 85 dtop_system_snapshot_helper_print(file, "\n"); 86 87 88 child_pid = fork(); 89 if (child_pid == 0) { 90 int fd = open(file, O_WRONLY | O_APPEND | O_CREAT, 91 S_IRUSR | S_IWUSR); 92 dup2(fd, STDOUT_FILENO); 93 dup2(fd, STDERR_FILENO); 94 close(fd); 95 execvp(c1, (char * const *)args); 96 printf("Failed to execute %s\n", c1); 97 printf("errno=%d error=%s\n", errno, strerror(errno)); 98 close(STDOUT_FILENO); 99 close(STDERR_FILENO); 100 exit(0); 101 } else if (child_pid < 0) { 102 return FILE_ERROR; 103 } else { 104 int return_status; 105 waitpid(child_pid, &return_status, 0); 106 107 if (return_status != 0) 108 return FILE_ERROR; 109 } 110 111 return FILE_SUCCESS; 112 } 113 114 115 116 /* IPv4 */ 117 const char *ip_addr_cmd[] = {"ip", "addr", 0}; 118 const char *ip_route_cmd[] = {"ip", "route", 0}; 119 const char *ip_route_all_tables_cmd[] = {"ip", "route", "show", "table", "all", 0}; 120 const char *ip_rule_cmd[] = {"ip", "rule", "show", 0}; 121 const char *ip_tables_cmd[] = {"iptables", "-L", "-n", "-v", 0}; 122 const char *ip_tables_nat_cmd[] = {"iptables", "-t", "nat", "-L", "-n", "-v", 0}; 123 const char *ip_tables_mangle_cmd[] = {"iptables", "-t", "mangle", "-L", "-n", "-v", 0}; 124 const char *ip_tables_raw_cmd[] = {"iptables", "-t", "raw", "-L", "-n", "-v", 0}; 125 126 /* IPv6 */ 127 const char *ip6_addr_cmd[] = {"ip", "-6", "addr", 0}; 128 const char *ip6_route_cmd[] = {"ip", "-6", "route", 0}; 129 const char *ip6_route_all_tables_cmd[] = {"ip", "-6", "route", "show", "table", "all", 0}; 130 const char *ip6_rule_cmd[] = {"ip", "-6", "rule", "show", 0}; 131 const char *ip6_tables_cmd[] = {"ip6tables", "-L", "-n", "-v", 0}; 132 const char *ip6_tables_nat_cmd[] = {"ip6tables", "-t", "nat", "-L", "-n", "-v", 0}; 133 const char *ip6_tables_mangle_cmd[] = {"ip6tables", "-t", "mangle", "-L", "-n", "-v", 0}; 134 const char *ip6_tables_raw_cmd[] = {"ip6tables", "-t", "raw", "-L", "-n", "-v", 0}; 135 136 /* Misc */ 137 const char *rps_config[] = {"cat", "/sys/class/net/rmnet_mhi0/queues/rx-0/rps_cpus", 0}; 138 const char *if_config[] = {"/data/busybox/busybox", "ifconfig", 0}; 139 const char *netcfg[] = {"netcfg", 0}; 140 const char *softnet_stat[] = {"cat", "/proc/net/softnet_stat", 0}; 141 142 /* XFRM logging */ 143 const char *xfrm_state[] = {"ip", "xfrm", "state", "show", 0}; 144 const char *xfrm_policy[] = {"ip", "xfrm", "policy", "show", 0}; 145 const char *xfrm_netstat[] = {"cat", "/proc/net/xfrm_stat", 0}; 146 147 #define DO_DTOP_RUN_AND_LOG(X) \ 148 dtop_run_and_log(file, X[0], X); 149 /** 150 * @brief Prints a System snapshot to a file specified by the user. 151 * 152 * @param fw File that system snapshot is printed to. 153 * @return FILE_ERROR - Writing to file was unsuccessful. 154 * @return FILE_SUCCESS - Writing to file was successful. 155 */ 156 int dtop_print_system_snapshot(char *file) 157 { 158 dtop_system_snapshot_helper_print(file, 159 "==============================================================\n" 160 " System Data Snapshot - Captured with Data Top \n" 161 " Version "); 162 dtop_system_snapshot_helper_print(file, VERSION); 163 dtop_system_snapshot_helper_print(file, "\n" 164 "==============================================================\n" 165 "\n"); 166 167 /* IPv4 */ 168 DO_DTOP_RUN_AND_LOG(ip_addr_cmd); 169 DO_DTOP_RUN_AND_LOG(ip_route_cmd); 170 DO_DTOP_RUN_AND_LOG(ip_route_all_tables_cmd); 171 DO_DTOP_RUN_AND_LOG(ip_rule_cmd); 172 DO_DTOP_RUN_AND_LOG(ip_tables_cmd); 173 DO_DTOP_RUN_AND_LOG(ip_tables_nat_cmd); 174 DO_DTOP_RUN_AND_LOG(ip_tables_mangle_cmd); 175 DO_DTOP_RUN_AND_LOG(ip_tables_raw_cmd); 176 177 /* IPv6 */ 178 DO_DTOP_RUN_AND_LOG(ip6_addr_cmd); 179 DO_DTOP_RUN_AND_LOG(ip6_route_cmd); 180 DO_DTOP_RUN_AND_LOG(ip6_route_all_tables_cmd); 181 DO_DTOP_RUN_AND_LOG(ip6_rule_cmd); 182 DO_DTOP_RUN_AND_LOG(ip6_tables_cmd); 183 DO_DTOP_RUN_AND_LOG(ip6_tables_nat_cmd); 184 DO_DTOP_RUN_AND_LOG(ip6_tables_mangle_cmd); 185 DO_DTOP_RUN_AND_LOG(ip6_tables_raw_cmd); 186 187 /* Misc */ 188 DO_DTOP_RUN_AND_LOG(rps_config); 189 DO_DTOP_RUN_AND_LOG(if_config); 190 DO_DTOP_RUN_AND_LOG(netcfg); 191 DO_DTOP_RUN_AND_LOG(softnet_stat); 192 193 /* XFRM logging */ 194 DO_DTOP_RUN_AND_LOG(xfrm_state); 195 DO_DTOP_RUN_AND_LOG(xfrm_policy); 196 DO_DTOP_RUN_AND_LOG(xfrm_netstat); 197 198 return FILE_SUCCESS; 199 } 200
