/* this function was automagically generated */
static int32_t NaClSysMunmapDecoder(struct NaClAppThread *natp) {
struct NaClSysMunmapArgs {
uint32_t start;
uint32_t length;
} p = *(struct NaClSysMunmapArgs *) natp->syscall_args;
// ### temporary disabled
/* d'b: disable user free() */
// return NACL_ABI_EFAULT;
/* d'b end */
return NaClSysMunmap(natp, (void *) (uintptr_t) p.start, (size_t) p.length);
}
int main(int argc, char **argv) {
char *nacl_file;
struct GioMemoryFileSnapshot gf;
struct NaClApp state;
struct NaClAppThread nat, *natp = &nat;
int errcode;
uint32_t initial_addr;
uint32_t addr;
struct NaClVmmap *mem_map;
char *nacl_verbosity = getenv("NACLVERBOSITY");
if (argc < 2) {
printf("No nexe file!\n\nFAIL\n");
}
nacl_file = argv[1];
NaClLogModuleInit();
NaClLogSetVerbosity((NULL == nacl_verbosity)
? 0
: strtol(nacl_verbosity, (char **) 0, 0));
errcode = GioMemoryFileSnapshotCtor(&gf, nacl_file);
ASSERT_NE(errcode, 0);
errcode = NaClAppCtor(&state);
ASSERT_NE(errcode, 0);
errcode = NaClAppLoadFile((struct Gio *) &gf,
&state,
NACL_ABI_CHECK_OPTION_CHECK);
ASSERT_EQ(errcode, 0);
InitThread(&state, natp);
/*
* Initial mappings:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw Stack
* There is no dynamic code area in this case.
*/
/* Check the initial mappings. */
mem_map = &state.mem_map;
ASSERT_EQ(mem_map->nvalid, 5);
CheckLowerMappings(mem_map);
/* Allocate range */
addr = NaClSysMmap(natp, 0, 3 * NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE,
-1, 0);
printf("addr=0x%"NACL_PRIx32"\n", addr);
initial_addr = addr;
/*
* The mappings have changed to become:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw mmap()'d anonymous, 3 pages (new)
* 5. rw Stack
*/
/* Map to overwrite the start of the previously allocated range */
addr = NaClSysMmap(natp, (void *) (uintptr_t) initial_addr,
2 * NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE
| NACL_ABI_MAP_FIXED,
-1, 0);
printf("addr=0x%"NACL_PRIx32"\n", addr);
ASSERT_EQ(addr, initial_addr);
/*
* The mappings have changed to become:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw mmap()'d anonymous, 2 pages (new)
* 5. rw mmap()'d anonymous, 1 pages (previous)
* 6. rw Stack
*/
/* Allocate new page */
addr = NaClSysMmap(natp, 0, NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE,
-1, 0);
printf("addr=0x%"NACL_PRIx32"\n", addr);
/*
* Our allocation strategy is to scan down from stack. This is an
* implementation detail and not part of the guaranteed semantics,
* but it is good to test that what we expect of our implementation
* didn't change.
*/
ASSERT_EQ_MSG(addr, initial_addr - NACL_MAP_PAGESIZE,
"Allocation strategy changed!");
/*
* The mappings have changed to become:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw mmap()'d anonymous, 1 pages (new)
* 5. rw mmap()'d anonymous, 2 pages
* 6. rw mmap()'d anonymous, 1 pages
* 7. rw Stack
*/
NaClVmmapMakeSorted(mem_map);
ASSERT_EQ(mem_map->nvalid, 8);
CheckLowerMappings(mem_map);
NaClVmmapDebug(mem_map, "After allocations");
/* Skip mappings 0, 1, 2 and 3. */
ASSERT_EQ(mem_map->vmentry[4]->page_num,
(initial_addr - NACL_MAP_PAGESIZE) >> NACL_PAGESHIFT);
ASSERT_EQ(mem_map->vmentry[4]->npages,
NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[5]->page_num,
initial_addr >> NACL_PAGESHIFT);
ASSERT_EQ(mem_map->vmentry[5]->npages,
2 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[6]->page_num,
(initial_addr + 2 * NACL_MAP_PAGESIZE) >> NACL_PAGESHIFT);
ASSERT_EQ(mem_map->vmentry[6]->npages,
NACL_PAGES_PER_MAP);
/*
* Undo effects of previous mmaps
*/
errcode = NaClSysMunmap(natp,
(void *) (uintptr_t) (initial_addr
- NACL_MAP_PAGESIZE),
NACL_MAP_PAGESIZE * 4);
ASSERT_EQ(errcode, 0);
/*
* Mappings return to being:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw Stack
*/
ASSERT_EQ(mem_map->nvalid, 5);
CheckLowerMappings(mem_map);
/* Allocate range */
addr = NaClSysMmap(natp, 0, 9 * NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE, -1, 0);
printf("addr=0x%"NACL_PRIx32"\n", addr);
initial_addr = addr;
/*
* The mappings have changed to become:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw mmap()'d anonymous, 9 pages (new)
* 5. rw Stack
*/
/* Map into middle of previously allocated range */
addr = NaClSysMmap(natp,
(void *) (uintptr_t) (initial_addr
+ 2 * NACL_MAP_PAGESIZE),
3 * NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE
| NACL_ABI_MAP_FIXED,
-1, 0);
printf("addr=0x%"NACL_PRIx32"\n", addr);
ASSERT_EQ(addr, initial_addr + NACL_MAP_PAGESIZE * 2);
/*
* The mappings have changed to become:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw mmap()'d anonymous, 2 pages (previous)
* 5. rw mmap()'d anonymous, 3 pages (new)
* 6. rw mmap()'d anonymous, 4 pages (previous)
* 7. rw Stack
*/
NaClVmmapMakeSorted(mem_map);
ASSERT_EQ(mem_map->nvalid, 8);
CheckLowerMappings(mem_map);
ASSERT_EQ(mem_map->vmentry[4]->page_num,
initial_addr >> NACL_PAGESHIFT);
ASSERT_EQ(mem_map->vmentry[4]->npages,
2 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[5]->page_num,
(initial_addr + 2 * NACL_MAP_PAGESIZE) >> NACL_PAGESHIFT);
ASSERT_EQ(mem_map->vmentry[5]->npages,
3 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[6]->page_num,
(initial_addr + 5 * NACL_MAP_PAGESIZE) >> NACL_PAGESHIFT);
ASSERT_EQ(mem_map->vmentry[6]->npages,
4 * NACL_PAGES_PER_MAP);
/*
* Undo effects of previous mmaps
*/
errcode = NaClSysMunmap(natp, (void *) (uintptr_t) initial_addr,
9 * NACL_MAP_PAGESIZE);
ASSERT_EQ(errcode, 0);
ASSERT_EQ(mem_map->nvalid, 5);
CheckLowerMappings(mem_map);
/*
* Mappings return to being:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw Stack
*/
/*
* Check use of hint.
*/
addr = NaClSysMmap(natp, (void *) (uintptr_t) initial_addr,
NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE,
-1, 0);
ASSERT_LE(addr, 0xffff0000u);
printf("addr=0x%"NACL_PRIx32"\n", addr);
ASSERT_LE_MSG(initial_addr, addr, "returned address not at or above hint");
errcode = NaClSysMunmap(natp, (void *) (uintptr_t) addr, NACL_MAP_PAGESIZE);
ASSERT_EQ(errcode, 0);
/* Check handling of zero-sized mappings. */
addr = NaClSysMmap(natp, 0, 0,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE, -1, 0);
ASSERT_EQ((int) addr, -NACL_ABI_EINVAL);
errcode = NaClSysMunmap(natp, (void *) (uintptr_t) initial_addr, 0);
ASSERT_EQ(errcode, -NACL_ABI_EINVAL);
printf("PASS\n");
return 0;
}
int main(int argc, char **argv) {
char *nacl_file;
struct NaClApp state;
struct NaClApp *nap = &state;
struct NaClAppThread nat, *natp = &nat;
int errcode;
uint32_t initial_addr;
uint32_t addr;
struct NaClVmmap *mem_map;
struct NaClVmmapEntry *ent;
char *nacl_verbosity = getenv("NACLVERBOSITY");
NaClHandleBootstrapArgs(&argc, &argv);
if (argc < 2) {
printf("No nexe file!\n\nFAIL\n");
}
nacl_file = argv[1];
NaClAllModulesInit();
NaClLogSetVerbosity((NULL == nacl_verbosity)
? 0
: strtol(nacl_verbosity, (char **) 0, 0));
errcode = NaClAppCtor(&state);
ASSERT_NE(errcode, 0);
errcode = NaClAppLoadFileFromFilename(nap, nacl_file);
ASSERT_EQ(errcode, LOAD_OK);
InitThread(&state, natp);
/*
* Initial mappings:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw Stack
* There is no dynamic code area in this case.
*/
/* Check the initial mappings. */
mem_map = &state.mem_map;
ASSERT_EQ(mem_map->nvalid, 5);
CheckLowerMappings(mem_map);
/* Allocate range */
addr = NaClSysMmapIntern(nap, 0, 3 * NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE,
-1, 0);
printf("addr=0x%"NACL_PRIx32"\n", addr);
initial_addr = addr;
/*
* The mappings have changed to become:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw mmap()'d anonymous, 3 pages (new)
* 5. rw Stack
*/
/* Map to overwrite the start of the previously allocated range */
addr = NaClSysMmapIntern(nap, (void *) (uintptr_t) initial_addr,
2 * NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE
| NACL_ABI_MAP_FIXED,
-1, 0);
printf("addr=0x%"NACL_PRIx32"\n", addr);
ASSERT_EQ(addr, initial_addr);
/*
* The mappings have changed to become:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw mmap()'d anonymous, 2 pages (new)
* 5. rw mmap()'d anonymous, 1 pages (previous)
* 6. rw Stack
*/
/* Allocate new page */
addr = NaClSysMmapIntern(nap, 0, NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE,
-1, 0);
printf("addr=0x%"NACL_PRIx32"\n", addr);
/*
* Our allocation strategy is to scan down from stack. This is an
* implementation detail and not part of the guaranteed semantics,
* but it is good to test that what we expect of our implementation
* didn't change.
*/
ASSERT_EQ_MSG(addr, initial_addr - NACL_MAP_PAGESIZE,
"Allocation strategy changed!");
/*
* The mappings have changed to become:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw mmap()'d anonymous, 1 pages (new)
* 5. rw mmap()'d anonymous, 2 pages
* 6. rw mmap()'d anonymous, 1 pages
* 7. rw Stack
*/
NaClVmmapMakeSorted(mem_map);
ASSERT_EQ(mem_map->nvalid, 8);
CheckLowerMappings(mem_map);
NaClVmmapDebug(mem_map, "After allocations");
/* Skip mappings 0, 1, 2 and 3. */
ASSERT_EQ(mem_map->vmentry[4]->page_num,
(initial_addr - NACL_MAP_PAGESIZE) >> NACL_PAGESHIFT);
ASSERT_EQ(mem_map->vmentry[4]->npages,
NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[5]->page_num,
initial_addr >> NACL_PAGESHIFT);
ASSERT_EQ(mem_map->vmentry[5]->npages,
2 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[6]->page_num,
(initial_addr + 2 * NACL_MAP_PAGESIZE) >> NACL_PAGESHIFT);
ASSERT_EQ(mem_map->vmentry[6]->npages,
NACL_PAGES_PER_MAP);
/*
* Undo effects of previous mmaps
*/
errcode = NaClSysMunmap(natp,
(void *) (uintptr_t) (initial_addr
- NACL_MAP_PAGESIZE),
NACL_MAP_PAGESIZE * 4);
ASSERT_EQ(errcode, 0);
/*
* Mappings return to being:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw Stack
*/
ASSERT_EQ(mem_map->nvalid, 5);
CheckLowerMappings(mem_map);
/* Allocate range */
addr = NaClSysMmapIntern(nap, 0, 9 * NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE,
-1, 0);
printf("addr=0x%"NACL_PRIx32"\n", addr);
initial_addr = addr;
/*
* The mappings have changed to become:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw mmap()'d anonymous, 9 pages (new)
* 5. rw Stack
*/
/* Map into middle of previously allocated range */
addr = NaClSysMmapIntern(nap,
(void *) (uintptr_t) (initial_addr
+ 2 * NACL_MAP_PAGESIZE),
3 * NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE
| NACL_ABI_MAP_FIXED,
-1, 0);
printf("addr=0x%"NACL_PRIx32"\n", addr);
ASSERT_EQ(addr, initial_addr + NACL_MAP_PAGESIZE * 2);
/*
* The mappings have changed to become:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw mmap()'d anonymous, 2 pages (previous)
* 5. rw mmap()'d anonymous, 3 pages (new)
* 6. rw mmap()'d anonymous, 4 pages (previous)
* 7. rw Stack
*/
NaClVmmapMakeSorted(mem_map);
ASSERT_EQ(mem_map->nvalid, 8);
CheckLowerMappings(mem_map);
ASSERT_EQ(mem_map->vmentry[4]->page_num,
initial_addr >> NACL_PAGESHIFT);
ASSERT_EQ(mem_map->vmentry[4]->npages,
2 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[5]->page_num,
(initial_addr + 2 * NACL_MAP_PAGESIZE) >> NACL_PAGESHIFT);
ASSERT_EQ(mem_map->vmentry[5]->npages,
3 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[6]->page_num,
(initial_addr + 5 * NACL_MAP_PAGESIZE) >> NACL_PAGESHIFT);
ASSERT_EQ(mem_map->vmentry[6]->npages,
4 * NACL_PAGES_PER_MAP);
/* Change the memory protection of previously allocated range */
errcode = NaClSysMprotectInternal(nap, (initial_addr
+ 1 * NACL_MAP_PAGESIZE),
5 * NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ);
ASSERT_EQ(errcode, 0);
/*
* The mappings have changed to become:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw mmap()'d anonymous, 1 pages (previous)
* 5. r mmap()'d anonymous, 1 pages (new)
* 6. r mmap()'d anonymous, 3 pages (new)
* 7. r mmap()'d anonymous, 1 pages (new)
* 8. rw mmap()'d anonymous, 3 pages (previous)
* 9. rw Stack
*/
NaClVmmapMakeSorted(mem_map);
ASSERT_EQ(mem_map->nvalid, 10);
CheckLowerMappings(mem_map);
ASSERT_EQ(mem_map->vmentry[4]->npages,
1 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[4]->prot,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE);
ASSERT_EQ(mem_map->vmentry[5]->npages,
1 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[5]->prot,
NACL_ABI_PROT_READ);
ASSERT_EQ(mem_map->vmentry[6]->npages,
3 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[6]->prot,
NACL_ABI_PROT_READ);
ASSERT_EQ(mem_map->vmentry[7]->npages,
1 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[7]->prot,
NACL_ABI_PROT_READ);
ASSERT_EQ(mem_map->vmentry[8]->npages,
3 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[8]->prot,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE);
/* Change the memory protection of previously allocated range */
errcode = NaClSysMprotectInternal(nap, (initial_addr
+ 2 * NACL_MAP_PAGESIZE),
3 * NACL_MAP_PAGESIZE,
NACL_ABI_PROT_NONE);
ASSERT_EQ(errcode, 0);
/*
* The mappings have changed to become:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw mmap()'d anonymous, 1 pages (previous)
* 5. r mmap()'d anonymous, 1 pages (previous)
* 6. -- mmap()'d anonymous, 3 pages (new)
* 7. r mmap()'d anonymous, 1 pages (previous)
* 8. rw mmap()'d anonymous, 3 pages (previous)
* 9. rw Stack
*/
NaClVmmapMakeSorted(mem_map);
ASSERT_EQ(mem_map->nvalid, 10);
CheckLowerMappings(mem_map);
ASSERT_EQ(mem_map->vmentry[4]->npages,
1 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[4]->prot,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE);
ASSERT_EQ(mem_map->vmentry[5]->npages,
1 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[5]->prot,
NACL_ABI_PROT_READ);
ASSERT_EQ(mem_map->vmentry[6]->npages,
3 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[6]->prot,
NACL_ABI_PROT_NONE);
ASSERT_EQ(mem_map->vmentry[7]->npages,
1 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[7]->prot,
NACL_ABI_PROT_READ);
ASSERT_EQ(mem_map->vmentry[8]->npages,
3 * NACL_PAGES_PER_MAP);
ASSERT_EQ(mem_map->vmentry[8]->prot,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE);
/*
* Undo effects of previous mmaps
*/
errcode = NaClSysMunmap(natp, (void *) (uintptr_t) initial_addr,
9 * NACL_MAP_PAGESIZE);
ASSERT_EQ(errcode, 0);
ASSERT_EQ(mem_map->nvalid, 5);
CheckLowerMappings(mem_map);
/*
* Mappings return to being:
* 0. -- Zero page
* 1. rx Static code segment
* 2. r Read-only data segment
* 3. rw Writable data segment
* 4. rw Stack
*/
/*
* Check use of hint.
*/
addr = NaClSysMmapIntern(nap, (void *) (uintptr_t) initial_addr,
NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE,
-1, 0);
ASSERT_LE(addr, 0xffff0000u);
printf("addr=0x%"NACL_PRIx32"\n", addr);
ASSERT_LE_MSG(initial_addr, addr, "returned address not at or above hint");
errcode = NaClSysMunmap(natp, (void *) (uintptr_t) addr, NACL_MAP_PAGESIZE);
ASSERT_EQ(errcode, 0);
/* Check handling of zero-sized mappings. */
addr = NaClSysMmapIntern(nap, 0, 0,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE,
-1, 0);
ASSERT_EQ((int) addr, -NACL_ABI_EINVAL);
errcode = NaClSysMunmap(natp, (void *) (uintptr_t) initial_addr, 0);
ASSERT_EQ(errcode, -NACL_ABI_EINVAL);
/* Check changing the memory protection of neighbouring mmaps */
addr = NaClSysMmapIntern(nap, 0, NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE,
-1, 0);
printf("addr=0x%"NACL_PRIx32"\n", addr);
initial_addr = addr;
addr = NaClSysMmapIntern(nap, (void *) (uintptr_t) (initial_addr +
NACL_MAP_PAGESIZE),
NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
NACL_ABI_MAP_ANONYMOUS | NACL_ABI_MAP_PRIVATE
| NACL_ABI_MAP_FIXED,
-1, 0);
printf("addr=0x%"NACL_PRIx32"\n", addr);
ASSERT_EQ(addr, initial_addr + NACL_MAP_PAGESIZE);
errcode = NaClSysMprotectInternal(nap, initial_addr,
2 * NACL_MAP_PAGESIZE,
NACL_ABI_PROT_READ);
ASSERT_EQ(errcode, 0);
/* Undo effects of previous mmaps */
errcode = NaClSysMunmap(natp, (void *) (uintptr_t) initial_addr,
2 * NACL_MAP_PAGESIZE);
ASSERT_EQ(errcode, 0);
/* Check that we cannot make the read-only data segment writable */
ent = mem_map->vmentry[2];
errcode = NaClSysMprotectInternal(nap, (uint32_t) (ent->page_num <<
NACL_PAGESHIFT),
ent->npages * NACL_MAP_PAGESIZE,
NACL_ABI_PROT_WRITE);
ASSERT_EQ(errcode, -NACL_ABI_EACCES);
#if NACL_ARCH(NACL_BUILD_ARCH) == NACL_x86 && NACL_BUILD_SUBARCH == 64
CheckForGuardRegion(nap->mem_start - ((size_t) 40 << 30), (size_t) 40 << 30);
CheckForGuardRegion(nap->mem_start + ((size_t) 4 << 30), (size_t) 40 << 30);
#endif
NaClAddrSpaceFree(nap);
printf("PASS\n");
return 0;
}