+++ /dev/null
-/*
- * machvm_tests.c
- * xnu_quick_test
- *
- * Copyright 2008 Apple Inc. All rights reserved.
- *
- */
-
-#include "tests.h"
-#include <mach/mach.h>
-#include <unistd.h>
-#include <err.h>
-#include <sys/param.h>
-#include <mach-o/ldsyms.h>
-
-int machvm_tests( void * the_argp )
-{
- int pagesize = getpagesize();
- int regionsizes[] = { 1, 3, 7, 13, 77, 1223 }; /* sizes must be in increasing order */
- char *regionbuffers[] = { NULL, NULL, NULL, NULL, NULL, NULL };
- int i;
- kern_return_t kret;
-
- /* Use vm_allocate to grab some memory */
- for (i=0; i < sizeof(regionsizes)/sizeof(regionsizes[0]); i++) {
- vm_address_t addr = 0;
-
- kret = vm_allocate(mach_task_self(), &addr, regionsizes[i]*pagesize, VM_FLAGS_ANYWHERE);
- if (kret != KERN_SUCCESS) {
- warnx("vm_allocate of %d pages failed: %d", regionsizes[i], kret);
- goto fail;
- }
- regionbuffers[i] = (char *)addr;
- }
-
- /* deallocate one range without having touched it, scribble on another, then deallocate that one */
- kret = vm_deallocate(mach_task_self(), (vm_address_t)regionbuffers[4], regionsizes[4]*pagesize);
- if (kret != KERN_SUCCESS) {
- warnx("vm_deallocate of %d pages failed: %d", regionsizes[4], kret);
- goto fail;
- }
- regionbuffers[4] = NULL;
-
- memset(regionbuffers[3], 0x4f, pagesize*MIN(3, regionsizes[3]));
-
- kret = vm_deallocate(mach_task_self(), (vm_address_t)regionbuffers[3], regionsizes[3]*pagesize);
- if (kret != KERN_SUCCESS) {
- warnx("vm_deallocate of %d pages failed: %d", regionsizes[3], kret);
- goto fail;
- }
- regionbuffers[3] = NULL;
-
- // populate the largest buffer with a byte pattern that matches the page offset, then fix it to readonly
- for (i=0; i < regionsizes[5]; i++) {
- memset(regionbuffers[5] + i*pagesize, (unsigned char)i, pagesize);
- }
- kret = vm_protect(mach_task_self(), (vm_offset_t)regionbuffers[5], regionsizes[5]*pagesize, FALSE, VM_PROT_READ);
- if (kret != KERN_SUCCESS) {
- warnx("vm_protect of %d pages failed: %d", regionsizes[5], kret);
- goto fail;
- }
-
- // read the last few pagse of the largest buffer and verify its contents
- {
- vm_offset_t newdata;
- mach_msg_type_number_t newcount;
-
- kret = vm_read(mach_task_self(), (vm_address_t)regionbuffers[5] + (regionsizes[5]-5)*pagesize, 5*pagesize,
- &newdata, &newcount);
- if (kret != KERN_SUCCESS) {
- warnx("vm_read of %d pages failed: %d", 5, kret);
- goto fail;
- }
-
- if (0 != memcmp((char *)newdata, regionbuffers[5] + (regionsizes[5]-5)*pagesize,
- 5*pagesize)) {
- warnx("vm_read comparison of %d pages failed", 5);
- kret = -1;
- vm_deallocate(mach_task_self(), newdata, 5*pagesize);
- goto fail;
- }
-
- kret = vm_deallocate(mach_task_self(), newdata, 5*pagesize);
- if (kret != KERN_SUCCESS) {
- warnx("vm_deallocate of %d pages failed: %d", 5, kret);
- goto fail;
- }
- }
-
- // do a list read to repopulate slots 3 and 4
- {
- vm_read_entry_t readlist;
-
- readlist[0].address = (vm_offset_t)regionbuffers[5] + 10*pagesize;
- readlist[0].size = regionsizes[3]*pagesize;
- readlist[1].address = (vm_offset_t)regionbuffers[5] + 10*pagesize + regionsizes[3]*pagesize;
- readlist[1].size = regionsizes[4]*pagesize;
-
- kret = vm_read_list(mach_task_self(), readlist, 2);
- if (kret != KERN_SUCCESS) {
- warnx("vm_read_list failed: %d", kret);
- goto fail;
- }
-
- if (0 != memcmp((char *)readlist[0].address, regionbuffers[5] + 10*pagesize,
- regionsizes[3]*pagesize)) {
- warnx("vm_read_list comparison of allocation 0 failed");
- kret = -1;
- vm_deallocate(mach_task_self(), readlist[0].address, readlist[0].size);
- vm_deallocate(mach_task_self(), readlist[1].address, readlist[1].size);
- goto fail;
- }
-
- if (0 != memcmp((char *)readlist[1].address, regionbuffers[5] + 10*pagesize + regionsizes[3]*pagesize,
- regionsizes[4]*pagesize)) {
- warnx("vm_read_list comparison of allocation 1 failed");
- kret = -1;
- vm_deallocate(mach_task_self(), readlist[0].address, readlist[0].size);
- vm_deallocate(mach_task_self(), readlist[1].address, readlist[1].size);
- goto fail;
- }
-
- regionbuffers[3] = (char *)readlist[0].address;
- regionbuffers[4] = (char *)readlist[1].address;
- }
-
- // do a read_overwrite and copy, which should be about the same
- {
- vm_size_t count;
-
- kret = vm_read_overwrite(mach_task_self(), (vm_offset_t)regionbuffers[3],
- regionsizes[0]*pagesize,
- (vm_offset_t)regionbuffers[0],
- &count);
- if (kret != KERN_SUCCESS) {
- warnx("vm_read_overwrite of %d pages failed: %d", regionsizes[0], kret);
- goto fail;
- }
-
- kret = vm_copy(mach_task_self(), (vm_offset_t)regionbuffers[0],
- regionsizes[0]*pagesize,
- (vm_offset_t)regionbuffers[1]);
- if (kret != KERN_SUCCESS) {
- warnx("vm_copy of %d pages failed: %d", regionsizes[0], kret);
- goto fail;
- }
-
- if (0 != memcmp(regionbuffers[1], regionbuffers[3],
- regionsizes[0]*pagesize)) {
- warnx("vm_read_overwrite/vm_copy comparison failed");
- kret = -1;
- goto fail;
- }
- }
-
- // do a vm_copy of our mach-o header and compare.
-
- kret = vm_write(mach_task_self(), (vm_address_t)regionbuffers[2],
- (vm_offset_t)&_mh_execute_header, pagesize);
- if (kret != KERN_SUCCESS) {
- warnx("vm_write of %d pages failed: %d", 1, kret);
- goto fail;
- }
-
- if (_mh_execute_header.magic != *(uint32_t *)regionbuffers[2]) {
- warnx("vm_write comparison failed");
- kret = -1;
- goto fail;
- }
-
- // check that the vm_protects above worked
- {
- vm_address_t addr = (vm_address_t)regionbuffers[5]+7*pagesize;
- vm_size_t size = pagesize;
- int _basic[VM_REGION_BASIC_INFO_COUNT];
- vm_region_basic_info_t basic = (vm_region_basic_info_t)_basic;
- int _basic64[VM_REGION_BASIC_INFO_COUNT_64];
- vm_region_basic_info_64_t basic64 = (vm_region_basic_info_64_t)_basic64;
- int _submap[VM_REGION_SUBMAP_INFO_COUNT];
- vm_region_submap_info_t submap = (vm_region_submap_info_t)_submap;
- mach_msg_type_number_t infocnt;
- mach_port_t objname;
- natural_t nesting_depth = 0;
-
-#if !__LP64__
- infocnt = VM_REGION_BASIC_INFO_COUNT;
- kret = vm_region(mach_task_self(), &addr, &size, VM_REGION_BASIC_INFO,
- (vm_region_info_t)basic, &infocnt, &objname);
- if (kret != KERN_SUCCESS) {
- warnx("vm_region(VM_REGION_BASIC_INFO) failed: %d", kret);
- goto fail;
- }
- if (VM_REGION_BASIC_INFO_COUNT != infocnt) {
- warnx("vm_region(VM_REGION_BASIC_INFO) returned a bad info count");
- kret = -1;
- goto fail;
- }
-
- // when we did the vm_read_list above, it should have split this region into
- // a 10 page sub-region
- if (addr != (vm_address_t)regionbuffers[5] || size != 10*pagesize) {
- warnx("vm_region(VM_REGION_BASIC_INFO) returned a bad region range");
- kret = -1;
- goto fail;
- }
-
- if (basic->protection != VM_PROT_READ) {
- warnx("vm_region(VM_REGION_BASIC_INFO) returned a bad protection");
- kret = -1;
- goto fail;
- }
-#endif
-
- infocnt = VM_REGION_BASIC_INFO_COUNT_64;
- // intentionally use VM_REGION_BASIC_INFO and get up-converted
- kret = vm_region_64(mach_task_self(), &addr, &size, VM_REGION_BASIC_INFO,
- (vm_region_info_t)basic64, &infocnt, &objname);
- if (kret != KERN_SUCCESS) {
- warnx("vm_region_64(VM_REGION_BASIC_INFO) failed: %d", kret);
- goto fail;
- }
- if (VM_REGION_BASIC_INFO_COUNT_64 != infocnt) {
- warnx("vm_region_64(VM_REGION_BASIC_INFO) returned a bad info count");
- kret = -1;
- goto fail;
- }
-
- // when we did the vm_read_list above, it should have split this region into
- // a 10 page sub-region
- if (addr != (vm_address_t)regionbuffers[5] || size != 10*pagesize) {
- warnx("vm_region_64(VM_REGION_BASIC_INFO) returned a bad region range");
- kret = -1;
- goto fail;
- }
-
- if (basic64->protection != VM_PROT_READ) {
- warnx("vm_region_64(VM_REGION_BASIC_INFO) returned a bad protection");
- kret = -1;
- goto fail;
- }
-
-#if !__LP64__
- // try to compare some stuff. Particularly important for fields after offset
- if (basic->offset != basic64->offset ||
- basic->behavior != basic64->behavior ||
- basic->user_wired_count != basic64->user_wired_count) {
- warnx("vm_region and vm_region_64 did not agree");
- kret = -1;
- goto fail;
- }
-#endif
-
-#if !__LP64__
- infocnt = VM_REGION_SUBMAP_INFO_COUNT;
- kret = vm_region_recurse(mach_task_self(), &addr, &size,
- &nesting_depth, (vm_region_info_t)submap,
- &infocnt);
- if (kret != KERN_SUCCESS) {
- warnx("vm_region_recurse() failed: %d", kret);
- goto fail;
- }
-
- if (VM_REGION_SUBMAP_INFO_COUNT != infocnt) {
- warnx("vm_region_recurse() returned a bad info count");
- kret = -1;
- goto fail;
- }
-
- if (submap->pages_dirtied != 10) {
- warnx("vm_region_recurse() returned bage pages_dirtied");
- kret = -1;
- goto fail;
- }
-
-#endif /* !__LP64__ */
-
- }
-
- // exercise mach_make_memory_entry/vm_map
- {
- vm_address_t addr1, addr2;
- vm_size_t size;
- mach_port_t mem_handle = MACH_PORT_NULL;
-
- addr1 = 0;
- size = 11*pagesize;
- kret = vm_allocate(mach_task_self(), &addr1, size, VM_FLAGS_ANYWHERE);
- if (kret != KERN_SUCCESS) {
- warnx("vm_allocate failed: %d", kret);
- kret = -1;
- goto fail;
- }
-
- *(uint32_t *)(uintptr_t)addr1 = 'test';
-
- kret = mach_make_memory_entry(mach_task_self(),
- &size, addr1, VM_PROT_DEFAULT,
- &mem_handle, MACH_PORT_NULL);
- if (kret != KERN_SUCCESS) {
- warnx("mach_make_memory_entry failed: %d", kret);
- kret = -1;
- goto fail;
- }
-
- kret = vm_deallocate(mach_task_self(), addr1, size);
- if (kret != KERN_SUCCESS) {
- warnx("vm_deallocate failed: %d", kret);
- kret = -1;
- goto fail;
- }
-
- addr2 = 0;
- kret = vm_map(mach_task_self(), &addr2, size, 0, VM_FLAGS_ANYWHERE,
- mem_handle, 0, FALSE, VM_PROT_DEFAULT, VM_PROT_DEFAULT,
- VM_INHERIT_NONE);
- if (kret != KERN_SUCCESS) {
- warnx("vm_map failed: %d", kret);
- kret = -1;
- goto fail;
- }
-
- if (*(uint32_t *)(uintptr_t)addr2 != 'test') {
- warnx("mapped data mismatch");
- kret = -1;
- goto fail;
- }
-
- kret = vm_deallocate(mach_task_self(), addr2, size);
- if (kret != KERN_SUCCESS) {
- warnx("vm_deallocate failed: %d", kret);
- kret = -1;
- goto fail;
- }
-
- kret = mach_port_mod_refs(mach_task_self(), mem_handle, MACH_PORT_RIGHT_SEND, -1);
- if (kret != KERN_SUCCESS) {
- warnx("mach_port_mod_refs(-1) failed: %d", kret);
- kret = -1;
- goto fail;
- }
-
- addr2 = 0;
- kret = vm_map(mach_task_self(), &addr2, size, 0, VM_FLAGS_ANYWHERE,
- mem_handle, 0, FALSE, VM_PROT_DEFAULT, VM_PROT_DEFAULT,
- VM_INHERIT_NONE);
- if (kret == KERN_SUCCESS) {
- warnx("vm_map succeeded when it should not have");
- kret = -1;
- goto fail;
- }
-
- kret = KERN_SUCCESS;
- }
-
-fail:
- for (i=0; i < sizeof(regionsizes)/sizeof(regionsizes[0]); i++) {
- if (regionbuffers[i]) {
- vm_deallocate(mach_task_self(), (vm_address_t)regionbuffers[i], regionsizes[i]*pagesize);
- }
- }
-
- return kret;
-}
-
projects / apple / xnu.git / blobdiff