tests/verify_kalloc_config.c

   1 #include <string.h>
   2 #include <stdlib.h>
   3 #include <mach/mach.h>
   4 #include <mach_debug/mach_debug.h>
   5 #include <darwintest.h>
   6
   7 T_GLOBAL_META(
   8         T_META_NAMESPACE("xnu.vm"),
   9         T_META_CHECK_LEAKS(false)
  10         );
  11
  12 static void run_test(void);
  13
  14 static void
  15 run_test(void)
  16 {
  17         kern_return_t kr;
  18         uint64_t size, i;
  19         mach_zone_name_t *name = NULL;
  20         unsigned int nameCnt = 0;
  21         mach_zone_info_t *info = NULL;
  22         unsigned int infoCnt = 0;
  23         mach_memory_info_t *wiredInfo = NULL;
  24         unsigned int wiredInfoCnt = 0;
  25         const char kalloc_str[] = "kalloc.";
  26
  27         kr = mach_memory_info(mach_host_self(),
  28             &name, &nameCnt, &info, &infoCnt,
  29             &wiredInfo, &wiredInfoCnt);
  30         T_QUIET; T_ASSERT_MACH_SUCCESS(kr, "mach_memory_info");
  31         T_QUIET; T_ASSERT_EQ(nameCnt, infoCnt, "zone name and info counts don't match");
  32
  33         /* Match the names of the kalloc zones against their element sizes. */
  34         for (i = 0; i < nameCnt; i++) {
  35                 if (strncmp(name[i].mzn_name, kalloc_str, strlen(kalloc_str)) == 0) {
  36                         size = strtoul(&(name[i].mzn_name[strlen(kalloc_str)]), NULL, 10);
  37                         T_LOG("ZONE NAME: %-25s ELEMENT SIZE: %llu", name[i].mzn_name, size);
  38                         T_QUIET; T_ASSERT_EQ(size, info[i].mzi_elem_size, "kalloc zone name and element size don't match");
  39                 }
  40         }
  41
  42         if ((name != NULL) && (nameCnt != 0)) {
  43                 kr = vm_deallocate(mach_task_self(), (vm_address_t) name,
  44                     (vm_size_t) (nameCnt * sizeof *name));
  45                 T_QUIET; T_ASSERT_MACH_SUCCESS(kr, "vm_deallocate name");
  46         }
  47
  48         if ((info != NULL) && (infoCnt != 0)) {
  49                 kr = vm_deallocate(mach_task_self(), (vm_address_t) info,
  50                     (vm_size_t) (infoCnt * sizeof *info));
  51                 T_QUIET; T_ASSERT_MACH_SUCCESS(kr, "vm_deallocate info");
  52         }
  53
  54         if ((wiredInfo != NULL) && (wiredInfoCnt != 0)) {
  55                 kr = vm_deallocate(mach_task_self(), (vm_address_t) wiredInfo,
  56                     (vm_size_t) (wiredInfoCnt * sizeof *wiredInfo));
  57                 T_QUIET; T_ASSERT_MACH_SUCCESS(kr, "vm_deallocate wiredInfo");
  58         }
  59
  60         T_END;
  61 }
  62
  63 T_DECL( verify_kalloc_config,
  64     "verifies that the kalloc zones are configured correctly",
  65     T_META_ASROOT(true))
  66 {
  67         run_test();
  68 }