1 /* //device/system/reference-ril/misc.c 2 ** 3 ** Copyright 2006, The Android Open Source Project 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 #include <sys/system_properties.h> 18 19 #include "misc.h" 20 /** returns 1 if line starts with prefix, 0 if it does not */ 21 int strStartsWith(const char *line, const char *prefix) 22 { 23 for ( ; *line != '\0' && *prefix != '\0' ; line++, prefix++) { 24 if (*line != *prefix) { 25 return 0; 26 } 27 } 28 29 return *prefix == '\0'; 30 } 31 32 // Returns true iff running this process in an emulator VM 33 bool isInEmulator(void) { 34 static int inQemu = -1; 35 if (inQemu < 0) { 36 char propValue[PROP_VALUE_MAX]; 37 inQemu = (__system_property_get("ro.kernel.qemu", propValue) != 0); 38 } 39 return inQemu == 1; 40 } 41
