1*a1e26a70SApple OSS Distributions #include <sys/resource.h> 2*a1e26a70SApple OSS Distributions #include <unistd.h> 3*a1e26a70SApple OSS Distributions #include <stdlib.h> 4*a1e26a70SApple OSS Distributions #include <stdio.h> 5*a1e26a70SApple OSS Distributions #include <string.h> 6*a1e26a70SApple OSS Distributions #include <libproc.h> 7*a1e26a70SApple OSS Distributions #include <mach-o/dyld.h> 8*a1e26a70SApple OSS Distributions #include <mach-o/dyld_priv.h> 9*a1e26a70SApple OSS Distributions 10*a1e26a70SApple OSS Distributions /* 11*a1e26a70SApple OSS Distributions * Test helper to retrieve the address of the shared cache. The helper 12*a1e26a70SApple OSS Distributions * also verifies that the process is correctly marked to have the shared 13*a1e26a70SApple OSS Distributions * cache reslid when interrogated through proc_pid_rusage() 14*a1e26a70SApple OSS Distributions */ 15*a1e26a70SApple OSS Distributions int main(int argc,char ** argv)16*a1e26a70SApple OSS Distributionsmain(int argc, char **argv) 17*a1e26a70SApple OSS Distributions { 18*a1e26a70SApple OSS Distributions size_t shared_cache_len = 0; 19*a1e26a70SApple OSS Distributions struct rusage_info_v5 ru = {}; 20*a1e26a70SApple OSS Distributions 21*a1e26a70SApple OSS Distributions if (argc != 2) { 22*a1e26a70SApple OSS Distributions fprintf(stderr, "Invalid helper invocation"); 23*a1e26a70SApple OSS Distributions exit(1); 24*a1e26a70SApple OSS Distributions } 25*a1e26a70SApple OSS Distributions 26*a1e26a70SApple OSS Distributions if (proc_pid_rusage(getpid(), RUSAGE_INFO_V5, (rusage_info_t *)&ru) != 0) { 27*a1e26a70SApple OSS Distributions perror("proc_pid_rusage() helper"); 28*a1e26a70SApple OSS Distributions exit(1); 29*a1e26a70SApple OSS Distributions } 30*a1e26a70SApple OSS Distributions 31*a1e26a70SApple OSS Distributions if (strcmp(argv[1], "check_rusage_flag") == 0) { 32*a1e26a70SApple OSS Distributions if (!(ru.ri_flags & RU_PROC_RUNS_RESLIDE)) { 33*a1e26a70SApple OSS Distributions fprintf(stderr, "Helper rusage flag check failed\n"); 34*a1e26a70SApple OSS Distributions exit(1); 35*a1e26a70SApple OSS Distributions } 36*a1e26a70SApple OSS Distributions } 37*a1e26a70SApple OSS Distributions 38*a1e26a70SApple OSS Distributions printf("%p\n", _dyld_get_shared_cache_range(&shared_cache_len)); 39*a1e26a70SApple OSS Distributions exit(0); 40*a1e26a70SApple OSS Distributions } 41