1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <unistd.h> 4 #include <string> 5 6 void usage(const char* me) { 7 static const char* usage_s = "Usage:\n" 8 " %s /system/bin/app_process <args>\n" 9 "or, better:\n" 10 " setprop wrap.<nicename> %s\n"; 11 fprintf(stderr, usage_s, me, me); 12 exit(1); 13 } 14 15 void env_prepend(const char* name, const char* value, const char* delim) { 16 const char* value_old = getenv(name); 17 std::string value_new = value; 18 if (value_old) { 19 value_new += delim; 20 value_new += value_old; 21 } 22 setenv(name, value_new.c_str(), 1); 23 } 24 25 int main(int argc, char** argv) { 26 if (argc < 2) { 27 usage(argv[0]); 28 } 29 char** args = new char*[argc]; 30 // If we are wrapping app_process, replace it with app_process_asan. 31 // TODO(eugenis): rewrite to <dirname>/asan/<basename>, if exists? 32 if (strcmp(argv[1], "/system/bin/app_process") == 0) { 33 args[0] = (char*)"/system/bin/asan/app_process"; 34 } else { 35 args[0] = argv[1]; 36 } 37 38 for (int i = 1; i < argc - 1; ++i) 39 args[i] = argv[i + 1]; 40 args[argc - 1] = 0; 41 42 env_prepend("ASAN_OPTIONS", "debug=1,verbosity=1", ","); 43 env_prepend("LD_LIBRARY_PATH", "/system/lib/asan", ":"); 44 env_prepend("LD_PRELOAD", "/system/lib/libasan_preload.so", ":"); 45 46 printf("ASAN_OPTIONS: %s\n", getenv("ASAN_OPTIONS")); 47 printf("LD_LIBRARY_PATH: %s\n", getenv("LD_LIBRARY_PATH")); 48 printf("LD_PRELOAD: %s\n", getenv("LD_PRELOAD")); 49 50 execv(args[0], args); 51 } 52
