1*aca3beaaSApple OSS Distributions #include <sys/resource.h> 2*aca3beaaSApple OSS Distributions #include <unistd.h> 3*aca3beaaSApple OSS Distributions #include <stdlib.h> 4*aca3beaaSApple OSS Distributions #include <stdio.h> 5*aca3beaaSApple OSS Distributions #include <string.h> 6*aca3beaaSApple OSS Distributions #include <libproc.h> 7*aca3beaaSApple OSS Distributions #include <mach-o/dyld.h> 8*aca3beaaSApple OSS Distributions #include <mach-o/dyld_priv.h> 9*aca3beaaSApple OSS Distributions 10*aca3beaaSApple OSS Distributions /* 11*aca3beaaSApple OSS Distributions * Test helper to retrieve the address of the shared cache. The helper 12*aca3beaaSApple OSS Distributions * also verifies that the process is correctly marked to have the shared 13*aca3beaaSApple OSS Distributions * cache reslid when interrogated through proc_pid_rusage() 14*aca3beaaSApple OSS Distributions */ 15*aca3beaaSApple OSS Distributions int main(int argc,char ** argv)16*aca3beaaSApple OSS Distributionsmain(int argc, char **argv) 17*aca3beaaSApple OSS Distributions { 18*aca3beaaSApple OSS Distributions size_t shared_cache_len = 0; 19*aca3beaaSApple OSS Distributions struct rusage_info_v5 ru = {}; 20*aca3beaaSApple OSS Distributions 21*aca3beaaSApple OSS Distributions if (argc != 2) { 22*aca3beaaSApple OSS Distributions fprintf(stderr, "Invalid helper invocation"); 23*aca3beaaSApple OSS Distributions exit(1); 24*aca3beaaSApple OSS Distributions } 25*aca3beaaSApple OSS Distributions 26*aca3beaaSApple OSS Distributions if (proc_pid_rusage(getpid(), RUSAGE_INFO_V5, (rusage_info_t *)&ru) != 0) { 27*aca3beaaSApple OSS Distributions perror("proc_pid_rusage() helper"); 28*aca3beaaSApple OSS Distributions exit(1); 29*aca3beaaSApple OSS Distributions } 30*aca3beaaSApple OSS Distributions 31*aca3beaaSApple OSS Distributions if (strcmp(argv[1], "check_rusage_flag") == 0) { 32*aca3beaaSApple OSS Distributions if (!(ru.ri_flags & RU_PROC_RUNS_RESLIDE)) { 33*aca3beaaSApple OSS Distributions fprintf(stderr, "Helper rusage flag check failed\n"); 34*aca3beaaSApple OSS Distributions exit(1); 35*aca3beaaSApple OSS Distributions } 36*aca3beaaSApple OSS Distributions } 37*aca3beaaSApple OSS Distributions 38*aca3beaaSApple OSS Distributions printf("%p\n", _dyld_get_shared_cache_range(&shared_cache_len)); 39*aca3beaaSApple OSS Distributions exit(0); 40*aca3beaaSApple OSS Distributions } 41