San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
JP Abgrall | 0031cea | 2012-04-17 16:38:23 -0700 | [diff] [blame] | 17 | // #define LOG_NDEBUG 0 |
| 18 | |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 19 | #include <stdlib.h> |
| 20 | #include <errno.h> |
| 21 | #include <sys/socket.h> |
| 22 | #include <sys/stat.h> |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 23 | #include <sys/wait.h> |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 24 | #include <fcntl.h> |
| 25 | #include <netinet/in.h> |
| 26 | #include <arpa/inet.h> |
Olivier Bailly | ff2c0d8 | 2010-11-17 11:45:07 -0800 | [diff] [blame] | 27 | #include <string.h> |
John Michelau | ac20860 | 2011-05-27 22:07:20 -0500 | [diff] [blame] | 28 | #include <cutils/properties.h> |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 29 | |
| 30 | #define LOG_TAG "NatController" |
| 31 | #include <cutils/log.h> |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 32 | #include <logwrap/logwrap.h> |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 33 | |
| 34 | #include "NatController.h" |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 35 | #include "SecondaryTableController.h" |
Robert Greenwalt | c462177 | 2012-01-31 12:46:45 -0800 | [diff] [blame] | 36 | #include "NetdConstants.h" |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 37 | |
Jeff Sharkey | 8e188ed | 2012-07-12 18:32:03 -0700 | [diff] [blame] | 38 | const char* NatController::LOCAL_FORWARD = "natctrl_FORWARD"; |
| 39 | const char* NatController::LOCAL_NAT_POSTROUTING = "natctrl_nat_POSTROUTING"; |
| 40 | |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 41 | NatController::NatController(SecondaryTableController *ctrl) { |
| 42 | secondaryTableCtrl = ctrl; |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 43 | } |
| 44 | |
| 45 | NatController::~NatController() { |
| 46 | } |
| 47 | |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 48 | int NatController::runCmd(int argc, const char **argv) { |
JP Abgrall | 11b4e9b | 2011-08-11 15:34:49 -0700 | [diff] [blame] | 49 | int res; |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 50 | |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 51 | res = android_fork_execvp(argc, (char **)argv, NULL, false, false); |
| 52 | ALOGV("runCmd() res=%d", res); |
JP Abgrall | 11b4e9b | 2011-08-11 15:34:49 -0700 | [diff] [blame] | 53 | return res; |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 54 | } |
| 55 | |
JP Abgrall | 0031cea | 2012-04-17 16:38:23 -0700 | [diff] [blame] | 56 | int NatController::setupIptablesHooks() { |
JP Abgrall | 458f318 | 2012-04-24 21:30:43 -0700 | [diff] [blame] | 57 | setDefaults(); |
JP Abgrall | 0031cea | 2012-04-17 16:38:23 -0700 | [diff] [blame] | 58 | return 0; |
| 59 | } |
| 60 | |
| 61 | int NatController::setDefaults() { |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 62 | const char *cmd1[] = { |
| 63 | IPTABLES_PATH, |
| 64 | "-F", |
| 65 | "natctrl_FORWARD" |
| 66 | }; |
| 67 | if (runCmd(ARRAY_SIZE(cmd1), cmd1)) |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 68 | return -1; |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 69 | |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 70 | const char *cmd2[] = { |
| 71 | IPTABLES_PATH, |
| 72 | "-t", |
| 73 | "nat", |
| 74 | "-F", |
| 75 | "natctrl_nat_POSTROUTING" |
| 76 | }; |
| 77 | if (runCmd(ARRAY_SIZE(cmd2), cmd2)) |
| 78 | return -1; |
| 79 | |
| 80 | const char *cmd3[] = { |
| 81 | IP_PATH, |
| 82 | "rule", |
| 83 | "flush" |
| 84 | }; |
| 85 | runCmd(ARRAY_SIZE(cmd3), cmd3); |
| 86 | |
| 87 | const char *cmd4[] = { |
| 88 | IP_PATH, |
| 89 | "-6", |
| 90 | "rule", |
| 91 | "flush" |
| 92 | }; |
| 93 | runCmd(ARRAY_SIZE(cmd4), cmd4); |
| 94 | |
| 95 | const char *cmd5[] = { |
| 96 | IP_PATH, |
| 97 | "rule", |
| 98 | "add", |
| 99 | "from", |
| 100 | "all", |
| 101 | "lookup", |
| 102 | "default", |
| 103 | "prio", |
| 104 | "32767" |
| 105 | }; |
| 106 | runCmd(ARRAY_SIZE(cmd5), cmd5); |
| 107 | |
| 108 | const char *cmd6[] = { |
| 109 | IP_PATH, |
| 110 | "rule", |
| 111 | "add", |
| 112 | "from", |
| 113 | "all", |
| 114 | "lookup", |
| 115 | "main", |
| 116 | "prio", |
| 117 | "32766" |
| 118 | }; |
| 119 | runCmd(ARRAY_SIZE(cmd6), cmd6); |
| 120 | |
| 121 | const char *cmd7[] = { |
| 122 | IP_PATH, |
| 123 | "-6", |
| 124 | "rule", |
| 125 | "add", |
| 126 | "from", |
| 127 | "all", |
| 128 | "lookup", |
| 129 | "default", |
| 130 | "prio", |
| 131 | "32767" |
| 132 | }; |
| 133 | runCmd(ARRAY_SIZE(cmd7), cmd7); |
| 134 | |
| 135 | const char *cmd8[] = { |
| 136 | IP_PATH, |
| 137 | "-6", |
| 138 | "rule", |
| 139 | "add", |
| 140 | "from", |
| 141 | "all", |
| 142 | "lookup", |
| 143 | "main", |
| 144 | "prio", |
| 145 | "32766" |
| 146 | }; |
| 147 | runCmd(ARRAY_SIZE(cmd8), cmd8); |
| 148 | |
| 149 | const char *cmd9[] = { |
| 150 | IP_PATH, |
| 151 | "route", |
| 152 | "flush", |
| 153 | "cache" |
| 154 | }; |
| 155 | runCmd(ARRAY_SIZE(cmd9), cmd9); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 156 | |
| 157 | natCount = 0; |
Kazuhiro Ondo | 4ab4685 | 2012-01-12 16:15:06 -0600 | [diff] [blame] | 158 | |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 159 | return 0; |
| 160 | } |
| 161 | |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 162 | bool NatController::checkInterface(const char *iface) { |
Jaime A Lopez-Sollano | d14fd4f | 2012-01-11 16:29:28 -0800 | [diff] [blame] | 163 | if (strlen(iface) > IFNAMSIZ) return false; |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 164 | return true; |
| 165 | } |
| 166 | |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 167 | // 0 1 2 3 4 5 |
| 168 | // nat enable intface extface addrcnt nated-ipaddr/prelength |
| 169 | int NatController::enableNat(const int argc, char **argv) { |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 170 | int i; |
| 171 | int addrCount = atoi(argv[4]); |
| 172 | int ret = 0; |
| 173 | const char *intIface = argv[2]; |
| 174 | const char *extIface = argv[3]; |
| 175 | int tableNumber; |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 176 | |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 177 | if (!checkInterface(intIface) || !checkInterface(extIface)) { |
Steve Block | 5ea0c05 | 2012-01-06 19:18:11 +0000 | [diff] [blame] | 178 | ALOGE("Invalid interface specified"); |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 179 | errno = ENODEV; |
| 180 | return -1; |
| 181 | } |
| 182 | |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 183 | if (argc < 5 + addrCount) { |
Steve Block | 5ea0c05 | 2012-01-06 19:18:11 +0000 | [diff] [blame] | 184 | ALOGE("Missing Argument"); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 185 | errno = EINVAL; |
| 186 | return -1; |
| 187 | } |
| 188 | |
| 189 | tableNumber = secondaryTableCtrl->findTableNumber(extIface); |
| 190 | if (tableNumber != -1) { |
Robert Greenwalt | c462177 | 2012-01-31 12:46:45 -0800 | [diff] [blame] | 191 | for(i = 0; i < addrCount; i++) { |
| 192 | ret |= secondaryTableCtrl->modifyFromRule(tableNumber, ADD, argv[5+i]); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 193 | |
Robert Greenwalt | c462177 | 2012-01-31 12:46:45 -0800 | [diff] [blame] | 194 | ret |= secondaryTableCtrl->modifyLocalRoute(tableNumber, ADD, intIface, argv[5+i]); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 195 | } |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 196 | const char *cmd[] = { |
| 197 | IP_PATH, |
| 198 | "route", |
| 199 | "flush", |
| 200 | "cache" |
| 201 | }; |
| 202 | runCmd(ARRAY_SIZE(cmd), cmd); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 203 | } |
| 204 | |
| 205 | if (ret != 0 || setForwardRules(true, intIface, extIface) != 0) { |
| 206 | if (tableNumber != -1) { |
| 207 | for (i = 0; i < addrCount; i++) { |
Robert Greenwalt | c462177 | 2012-01-31 12:46:45 -0800 | [diff] [blame] | 208 | secondaryTableCtrl->modifyLocalRoute(tableNumber, DEL, intIface, argv[5+i]); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 209 | |
Robert Greenwalt | c462177 | 2012-01-31 12:46:45 -0800 | [diff] [blame] | 210 | secondaryTableCtrl->modifyFromRule(tableNumber, DEL, argv[5+i]); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 211 | } |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 212 | const char *cmd[] = { |
| 213 | IP_PATH, |
| 214 | "route", |
| 215 | "flush", |
| 216 | "cache" |
| 217 | }; |
| 218 | runCmd(ARRAY_SIZE(cmd), cmd); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 219 | } |
Steve Block | 5ea0c05 | 2012-01-06 19:18:11 +0000 | [diff] [blame] | 220 | ALOGE("Error setting forward rules"); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 221 | errno = ENODEV; |
| 222 | return -1; |
| 223 | } |
| 224 | |
JP Abgrall | 0031cea | 2012-04-17 16:38:23 -0700 | [diff] [blame] | 225 | /* Always make sure the drop rule is at the end */ |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 226 | const char *cmd1[] = { |
| 227 | IPTABLES_PATH, |
| 228 | "-D", |
| 229 | "natctrl_FORWARD", |
| 230 | "-j", |
| 231 | "DROP" |
| 232 | }; |
| 233 | runCmd(ARRAY_SIZE(cmd1), cmd1); |
| 234 | const char *cmd2[] = { |
| 235 | IPTABLES_PATH, |
| 236 | "-A", |
| 237 | "natctrl_FORWARD", |
| 238 | "-j", |
| 239 | "DROP" |
| 240 | }; |
| 241 | runCmd(ARRAY_SIZE(cmd2), cmd2); |
JP Abgrall | 0031cea | 2012-04-17 16:38:23 -0700 | [diff] [blame] | 242 | |
| 243 | |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 244 | natCount++; |
| 245 | // add this if we are the first added nat |
| 246 | if (natCount == 1) { |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 247 | const char *cmd[] = { |
| 248 | IPTABLES_PATH, |
| 249 | "-t", |
| 250 | "nat", |
| 251 | "-A", |
| 252 | "natctrl_nat_POSTROUTING", |
| 253 | "-o", |
| 254 | extIface, |
| 255 | "-j", |
| 256 | "MASQUERADE" |
| 257 | }; |
| 258 | if (runCmd(ARRAY_SIZE(cmd), cmd)) { |
| 259 | ALOGE("Error seting postroute rule: iface=%s", extIface); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 260 | // unwind what's been done, but don't care about success - what more could we do? |
| 261 | for (i = 0; i < addrCount; i++) { |
Robert Greenwalt | c462177 | 2012-01-31 12:46:45 -0800 | [diff] [blame] | 262 | secondaryTableCtrl->modifyLocalRoute(tableNumber, DEL, intIface, argv[5+i]); |
| 263 | |
| 264 | secondaryTableCtrl->modifyFromRule(tableNumber, DEL, argv[5+i]); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 265 | } |
| 266 | setDefaults(); |
| 267 | return -1; |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | return 0; |
| 272 | } |
| 273 | |
| 274 | int NatController::setForwardRules(bool add, const char *intIface, const char * extIface) { |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 275 | const char *cmd1[] = { |
| 276 | IPTABLES_PATH, |
| 277 | add ? "-A" : "-D", |
| 278 | "natctrl_FORWARD", |
| 279 | "-i", |
| 280 | extIface, |
| 281 | "-o", |
| 282 | intIface, |
| 283 | "-m", |
| 284 | "state", |
| 285 | "--state", |
| 286 | "ESTABLISHED,RELATED", |
| 287 | "-j", |
| 288 | "RETURN" |
| 289 | }; |
| 290 | int rc = 0; |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 291 | |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 292 | if (runCmd(ARRAY_SIZE(cmd1), cmd1) && add) { |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 293 | return -1; |
| 294 | } |
| 295 | |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 296 | const char *cmd2[] = { |
| 297 | IPTABLES_PATH, |
| 298 | add ? "-A" : "-D", |
| 299 | "natctrl_FORWARD", |
| 300 | "-i", |
| 301 | intIface, |
| 302 | "-o", |
| 303 | extIface, |
| 304 | "-m", |
| 305 | "state", |
| 306 | "--state", |
| 307 | "INVALID", |
| 308 | "-j", |
| 309 | "DROP" |
| 310 | }; |
| 311 | |
| 312 | const char *cmd3[] = { |
| 313 | IPTABLES_PATH, |
| 314 | add ? "-A" : "-D", |
| 315 | "natctrl_FORWARD", |
| 316 | "-i", |
| 317 | intIface, |
| 318 | "-o", |
| 319 | extIface, |
| 320 | "-j", |
| 321 | "RETURN" |
| 322 | }; |
| 323 | |
| 324 | if (runCmd(ARRAY_SIZE(cmd2), cmd2) && add) { |
Robert Greenwalt | f7bf29c | 2011-11-01 22:07:28 -0700 | [diff] [blame] | 325 | // bail on error, but only if adding |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 326 | rc = -1; |
| 327 | goto err_invalid_drop; |
Robert Greenwalt | ddb9f6e | 2011-08-02 13:00:11 -0700 | [diff] [blame] | 328 | } |
| 329 | |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 330 | if (runCmd(ARRAY_SIZE(cmd3), cmd3) && add) { |
Robert Greenwalt | 210b977 | 2010-03-25 14:54:45 -0700 | [diff] [blame] | 331 | // unwind what's been done, but don't care about success - what more could we do? |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 332 | rc = -1; |
| 333 | goto err_return; |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 334 | } |
JP Abgrall | 0031cea | 2012-04-17 16:38:23 -0700 | [diff] [blame] | 335 | |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 336 | return 0; |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 337 | |
| 338 | err_return: |
| 339 | cmd2[1] = "-D"; |
| 340 | runCmd(ARRAY_SIZE(cmd2), cmd2); |
| 341 | err_invalid_drop: |
| 342 | cmd1[1] = "-D"; |
| 343 | runCmd(ARRAY_SIZE(cmd1), cmd1); |
| 344 | return rc; |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 345 | } |
| 346 | |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 347 | // nat disable intface extface |
| 348 | // 0 1 2 3 4 5 |
| 349 | // nat enable intface extface addrcnt nated-ipaddr/prelength |
| 350 | int NatController::disableNat(const int argc, char **argv) { |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 351 | int i; |
| 352 | int addrCount = atoi(argv[4]); |
| 353 | const char *intIface = argv[2]; |
| 354 | const char *extIface = argv[3]; |
| 355 | int tableNumber; |
Robert Greenwalt | 1caafe6 | 2010-03-24 15:43:00 -0700 | [diff] [blame] | 356 | |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 357 | if (!checkInterface(intIface) || !checkInterface(extIface)) { |
Steve Block | 5ea0c05 | 2012-01-06 19:18:11 +0000 | [diff] [blame] | 358 | ALOGE("Invalid interface specified"); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 359 | errno = ENODEV; |
| 360 | return -1; |
| 361 | } |
| 362 | |
| 363 | if (argc < 5 + addrCount) { |
Steve Block | 5ea0c05 | 2012-01-06 19:18:11 +0000 | [diff] [blame] | 364 | ALOGE("Missing Argument"); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 365 | errno = EINVAL; |
| 366 | return -1; |
| 367 | } |
| 368 | |
| 369 | setForwardRules(false, intIface, extIface); |
| 370 | |
| 371 | tableNumber = secondaryTableCtrl->findTableNumber(extIface); |
| 372 | if (tableNumber != -1) { |
| 373 | for (i = 0; i < addrCount; i++) { |
Robert Greenwalt | c462177 | 2012-01-31 12:46:45 -0800 | [diff] [blame] | 374 | secondaryTableCtrl->modifyLocalRoute(tableNumber, DEL, intIface, argv[5+i]); |
Robert Greenwalt | 063af32 | 2011-11-18 15:32:13 -0800 | [diff] [blame] | 375 | |
Robert Greenwalt | c462177 | 2012-01-31 12:46:45 -0800 | [diff] [blame] | 376 | secondaryTableCtrl->modifyFromRule(tableNumber, DEL, argv[5+i]); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 377 | } |
Robert Greenwalt | 063af32 | 2011-11-18 15:32:13 -0800 | [diff] [blame] | 378 | |
Rom Lemarchand | 001f0a4 | 2013-01-31 12:41:03 -0800 | [diff] [blame^] | 379 | const char *cmd[] = { |
| 380 | IP_PATH, |
| 381 | "route", |
| 382 | "flush", |
| 383 | "cache" |
| 384 | }; |
| 385 | runCmd(ARRAY_SIZE(cmd), cmd); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | if (--natCount <= 0) { |
Kazuhiro Ondo | 4ab4685 | 2012-01-12 16:15:06 -0600 | [diff] [blame] | 389 | // handle decrement to 0 case (do reset to defaults) and erroneous dec below 0 |
| 390 | setDefaults(); |
Robert Greenwalt | fc97b82 | 2011-11-02 16:48:36 -0700 | [diff] [blame] | 391 | } |
| 392 | return 0; |
San Mehat | 9ff78fb | 2010-01-19 12:59:15 -0800 | [diff] [blame] | 393 | } |