int SeekPastEndAndWriteTest(struct NaClHostDesc *test_file,
struct NaClHostDesc *ro_view,
void const *test_params) {
nacl_host_stat_t stbuf;
nacl_off64_t new_size;
ssize_t io_err;
int err;
nacl_off64_t seek_result;
UNREFERENCED_PARAMETER(test_params);
err = NaClHostDescFstat(test_file, &stbuf);
if (0 != err) {
fprintf(stderr, "SeekPastEndAndWriteTest: fstat failed\n");
return 0;
}
new_size = stbuf.st_size + (2 << 16);
seek_result = NaClHostDescSeek(test_file, new_size, 0);
if (seek_result != new_size) {
fprintf(stderr, "SeekPastEndAndWriteTest: seek failed\n");
return 0;
}
io_err = NaClHostDescWrite(test_file, "1", 1);
if (1 != io_err) {
fprintf(stderr, "SeekPastEndAndWriteTest: write failed: %"NACL_PRIdS"\n",
io_err);
}
err = NaClHostDescFstat(test_file, &stbuf);
if (0 != err) {
fprintf(stderr, "SeekPastEndAndWriteTest: post-write fstat failed\n");
return 0;
}
ASSERT_EQ(stbuf.st_size, new_size + 1);
err = NaClHostDescFstat(ro_view, &stbuf);
if (0 != err) {
fprintf(stderr,
"SeekPastEndAndWriteTest: post-write ro_view fstat failed\n");
return 0;
}
ASSERT_EQ(stbuf.st_size, new_size + 1);
return 1;
}
static int NaClDescIoDescFstat(struct NaClDesc *vself,
struct nacl_abi_stat *statbuf) {
struct NaClDescIoDesc *self = (struct NaClDescIoDesc *) vself;
int rv;
nacl_host_stat_t hstatbuf;
rv = NaClHostDescFstat(self->hd, &hstatbuf);
if (0 != rv) {
return rv;
}
return NaClAbiStatHostDescStatXlateCtor(statbuf, &hstatbuf);
}
void NaClMetadataFromFDCtor(struct NaClValidationMetadata *metadata,
int file_desc,
const char* file_name,
size_t file_name_length) {
struct NaClHostDesc wrapper;
nacl_host_stat_t stat;
#if NACL_WINDOWS
BY_HANDLE_FILE_INFORMATION file_info;
#endif
memset(metadata, 0, sizeof(*metadata));
/* If we early out, identity_type will be 0 / NaClCodeIdentityData. */
wrapper.d = file_desc;
if(NaClHostDescFstat(&wrapper, &stat))
return;
#if NACL_WINDOWS
/*
* This will not get us the complete file ID on ReFS, but doing the correct
* thing (calling GetFileInformationByHandleEx) causes linkage issues on
* Windows XP. We aren't relying on the file ID for security, just collision
* resistance, so we don't need all of it.
* In many cases (including on NTFS) we're also getting the 32 least
* significant bits of a 64-bit volume serial number - but again, since it's
* random we can live with it.
*/
if (!GetFileInformationByHandle((HANDLE) _get_osfhandle(file_desc),
&file_info))
return;
metadata->device_id = file_info.dwVolumeSerialNumber;
metadata->file_id = ((((uint64_t)file_info.nFileIndexHigh) << 32) |
file_info.nFileIndexLow);
#else
/* st_dev is not actually a property of the device, so skip it. */
metadata->file_id = stat.st_ino;
#endif
metadata->file_size = stat.st_size;
metadata->mtime = stat.st_mtime;
metadata->ctime = stat.st_ctime;
CHECK(0 < file_name_length);
metadata->file_name = malloc(file_name_length);
CHECK(NULL != metadata->file_name);
memcpy(metadata->file_name, file_name, file_name_length);
metadata->file_name_length = file_name_length;
/* We have all the identity information we need. */
metadata->identity_type = NaClCodeIdentityFile;
}