1*4d495c6eSApple OSS Distributions #include <sys/resource.h> 2*4d495c6eSApple OSS Distributions #include <unistd.h> 3*4d495c6eSApple OSS Distributions #include <stdlib.h> 4*4d495c6eSApple OSS Distributions #include <stdio.h> 5*4d495c6eSApple OSS Distributions #include <string.h> 6*4d495c6eSApple OSS Distributions #include <libproc.h> 7*4d495c6eSApple OSS Distributions #include <mach-o/dyld.h> 8*4d495c6eSApple OSS Distributions #include <mach-o/dyld_priv.h> 9*4d495c6eSApple OSS Distributions 10*4d495c6eSApple OSS Distributions /* 11*4d495c6eSApple OSS Distributions * Test helper to retrieve the address of the shared cache. The helper 12*4d495c6eSApple OSS Distributions * also verifies that the process is correctly marked to have the shared 13*4d495c6eSApple OSS Distributions * cache reslid when interrogated through proc_pid_rusage() 14*4d495c6eSApple OSS Distributions */ 15*4d495c6eSApple OSS Distributions int main(int argc,char ** argv)16*4d495c6eSApple OSS Distributionsmain(int argc, char **argv) 17*4d495c6eSApple OSS Distributions { 18*4d495c6eSApple OSS Distributions size_t shared_cache_len = 0; 19*4d495c6eSApple OSS Distributions struct rusage_info_v5 ru = {}; 20*4d495c6eSApple OSS Distributions 21*4d495c6eSApple OSS Distributions if (argc != 2) { 22*4d495c6eSApple OSS Distributions fprintf(stderr, "Invalid helper invocation"); 23*4d495c6eSApple OSS Distributions exit(1); 24*4d495c6eSApple OSS Distributions } 25*4d495c6eSApple OSS Distributions 26*4d495c6eSApple OSS Distributions if (proc_pid_rusage(getpid(), RUSAGE_INFO_V5, (rusage_info_t *)&ru) != 0) { 27*4d495c6eSApple OSS Distributions perror("proc_pid_rusage() helper"); 28*4d495c6eSApple OSS Distributions exit(1); 29*4d495c6eSApple OSS Distributions } 30*4d495c6eSApple OSS Distributions 31*4d495c6eSApple OSS Distributions if (strcmp(argv[1], "check_rusage_flag") == 0) { 32*4d495c6eSApple OSS Distributions if (!(ru.ri_flags & RU_PROC_RUNS_RESLIDE)) { 33*4d495c6eSApple OSS Distributions fprintf(stderr, "Helper rusage flag check failed\n"); 34*4d495c6eSApple OSS Distributions exit(1); 35*4d495c6eSApple OSS Distributions } 36*4d495c6eSApple OSS Distributions } 37*4d495c6eSApple OSS Distributions 38*4d495c6eSApple OSS Distributions printf("%p\n", _dyld_get_shared_cache_range(&shared_cache_len)); 39*4d495c6eSApple OSS Distributions exit(0); 40*4d495c6eSApple OSS Distributions } 41