1*1b191cb5SApple OSS Distributions #include <sys/resource.h> 2*1b191cb5SApple OSS Distributions #include <unistd.h> 3*1b191cb5SApple OSS Distributions #include <stdlib.h> 4*1b191cb5SApple OSS Distributions #include <stdio.h> 5*1b191cb5SApple OSS Distributions #include <string.h> 6*1b191cb5SApple OSS Distributions #include <libproc.h> 7*1b191cb5SApple OSS Distributions #include <mach-o/dyld.h> 8*1b191cb5SApple OSS Distributions #include <mach-o/dyld_priv.h> 9*1b191cb5SApple OSS Distributions 10*1b191cb5SApple OSS Distributions /* 11*1b191cb5SApple OSS Distributions * Test helper to retrieve the address of the shared cache. The helper 12*1b191cb5SApple OSS Distributions * also verifies that the process is correctly marked to have the shared 13*1b191cb5SApple OSS Distributions * cache reslid when interrogated through proc_pid_rusage() 14*1b191cb5SApple OSS Distributions */ 15*1b191cb5SApple OSS Distributions int main(int argc,char ** argv)16*1b191cb5SApple OSS Distributionsmain(int argc, char **argv) 17*1b191cb5SApple OSS Distributions { 18*1b191cb5SApple OSS Distributions size_t shared_cache_len = 0; 19*1b191cb5SApple OSS Distributions struct rusage_info_v5 ru = {}; 20*1b191cb5SApple OSS Distributions 21*1b191cb5SApple OSS Distributions if (argc != 2) { 22*1b191cb5SApple OSS Distributions fprintf(stderr, "Invalid helper invocation"); 23*1b191cb5SApple OSS Distributions exit(1); 24*1b191cb5SApple OSS Distributions } 25*1b191cb5SApple OSS Distributions 26*1b191cb5SApple OSS Distributions if (proc_pid_rusage(getpid(), RUSAGE_INFO_V5, (rusage_info_t *)&ru) != 0) { 27*1b191cb5SApple OSS Distributions perror("proc_pid_rusage() helper"); 28*1b191cb5SApple OSS Distributions exit(1); 29*1b191cb5SApple OSS Distributions } 30*1b191cb5SApple OSS Distributions 31*1b191cb5SApple OSS Distributions if (strcmp(argv[1], "check_rusage_flag") == 0) { 32*1b191cb5SApple OSS Distributions if (!(ru.ri_flags & RU_PROC_RUNS_RESLIDE)) { 33*1b191cb5SApple OSS Distributions fprintf(stderr, "Helper rusage flag check failed\n"); 34*1b191cb5SApple OSS Distributions exit(1); 35*1b191cb5SApple OSS Distributions } 36*1b191cb5SApple OSS Distributions } 37*1b191cb5SApple OSS Distributions 38*1b191cb5SApple OSS Distributions printf("%p\n", _dyld_get_shared_cache_range(&shared_cache_len)); 39*1b191cb5SApple OSS Distributions exit(0); 40*1b191cb5SApple OSS Distributions } 41