1*e3723e1fSApple OSS Distributions #include <sys/resource.h> 2*e3723e1fSApple OSS Distributions #include <unistd.h> 3*e3723e1fSApple OSS Distributions #include <stdlib.h> 4*e3723e1fSApple OSS Distributions #include <stdio.h> 5*e3723e1fSApple OSS Distributions #include <string.h> 6*e3723e1fSApple OSS Distributions #include <libproc.h> 7*e3723e1fSApple OSS Distributions #include <mach-o/dyld.h> 8*e3723e1fSApple OSS Distributions #include <mach-o/dyld_priv.h> 9*e3723e1fSApple OSS Distributions 10*e3723e1fSApple OSS Distributions /* 11*e3723e1fSApple OSS Distributions * Test helper to retrieve the address of the shared cache. The helper 12*e3723e1fSApple OSS Distributions * also verifies that the process is correctly marked to have the shared 13*e3723e1fSApple OSS Distributions * cache reslid when interrogated through proc_pid_rusage() 14*e3723e1fSApple OSS Distributions */ 15*e3723e1fSApple OSS Distributions int main(int argc,char ** argv)16*e3723e1fSApple OSS Distributionsmain(int argc, char **argv) 17*e3723e1fSApple OSS Distributions { 18*e3723e1fSApple OSS Distributions size_t shared_cache_len = 0; 19*e3723e1fSApple OSS Distributions struct rusage_info_v5 ru = {}; 20*e3723e1fSApple OSS Distributions 21*e3723e1fSApple OSS Distributions if (argc != 2) { 22*e3723e1fSApple OSS Distributions fprintf(stderr, "Invalid helper invocation"); 23*e3723e1fSApple OSS Distributions exit(1); 24*e3723e1fSApple OSS Distributions } 25*e3723e1fSApple OSS Distributions 26*e3723e1fSApple OSS Distributions if (proc_pid_rusage(getpid(), RUSAGE_INFO_V5, (rusage_info_t *)&ru) != 0) { 27*e3723e1fSApple OSS Distributions perror("proc_pid_rusage() helper"); 28*e3723e1fSApple OSS Distributions exit(1); 29*e3723e1fSApple OSS Distributions } 30*e3723e1fSApple OSS Distributions 31*e3723e1fSApple OSS Distributions if (strcmp(argv[1], "check_rusage_flag") == 0) { 32*e3723e1fSApple OSS Distributions if (!(ru.ri_flags & RU_PROC_RUNS_RESLIDE)) { 33*e3723e1fSApple OSS Distributions fprintf(stderr, "Helper rusage flag check failed\n"); 34*e3723e1fSApple OSS Distributions exit(1); 35*e3723e1fSApple OSS Distributions } 36*e3723e1fSApple OSS Distributions } 37*e3723e1fSApple OSS Distributions 38*e3723e1fSApple OSS Distributions printf("%p\n", _dyld_get_shared_cache_range(&shared_cache_len)); 39*e3723e1fSApple OSS Distributions exit(0); 40*e3723e1fSApple OSS Distributions } 41