int
main(void) {
int fd = safe_open("/test/testfile", O_RDWR | O_TRUNC);
struct stat *stat = safe_fstat(fd);
assert(stat->st_size == 0 && stat->st_blocks == 0);
safe_seek(fd, sizeof(buffer) * 1024 * 2, LSEEK_SET);
int i;
for (i = 0; i < sizeof(buffer); i ++) {
buffer[i] = i;
}
safe_write(fd, buffer, sizeof(buffer));
memset(buffer, 0, sizeof(buffer));
safe_seek(fd, -sizeof(buffer), LSEEK_END);
safe_read(fd, buffer, sizeof(buffer));
for (i = 0; i < sizeof(buffer); i ++) {
assert(buffer[i] == (unsigned char)i);
}
fd = safe_open("/test/testfile", O_RDWR | O_TRUNC);
stat = safe_fstat(fd);
assert(stat->st_size == 0 && stat->st_blocks == 0);
printf("sfs_filetest2 pass.\n");
return 0;
}
void read_odsf (parser_state_t *ps, sup_header_t h)
{
sup_ods_first_t odsf;
if (h.packet_len < sizeof(odsf))
die(ps->fh, sizeof(h), "Undersized ODSF packet.");
safe_read(&odsf, sizeof(odsf), ps->fh, "ODSF structure");
conv_sup_ods_first(&odsf);
if ((odsf.magic_len & 0x80000000) && (odsf.magic_len & 0x40000000))
{
printf("ODS first\n\todsf type = single\n");
}
else if (odsf.magic_len & 0x80000000)
{
printf("ODS first\n\todsf type = multi\n");
}
else
{
fseek(ps->fh, -sizeof(odsf), SEEK_CUR);
read_odsn(ps, h);
return;
}
ps->total_object_sizes += odsf.width * odsf.height;
(ps->images)++;
printf("\tpicture = %u\n", odsf.picture);
printf("\tpalette = %u\n", odsf.palette);
printf("\tlength = %u (incl. + 4)\n", odsf.magic_len & 0x3fffffff);
printf("\twidth = %u\n", odsf.width);
printf("\theight = %u\n", odsf.height);
safe_seek(ps->fh, h.packet_len - sizeof(odsf), "OSDF data");
}
void read_odsn (parser_state_t *ps, sup_header_t h)
{
sup_ods_next_t odsn;
if (h.packet_len < sizeof(odsn))
die(ps->fh, sizeof(h), "Undersized ODSN packet.");
safe_read(&odsn, sizeof(odsn), ps->fh, "ODSN structure");
conv_sup_ods_next(&odsn);
if (odsn.m != 0 || (odsn.last != 0 && odsn.last != 64))
die(ps->fh, sizeof(odsn), "Invalid ODSN magic.");
printf("ODS next\n");
printf("\tpicture = %u\n", odsn.picture);
printf("\tlast = %s (%u)\n", odsn.last ? "yes" : "no", odsn.last);
safe_seek(ps->fh, h.packet_len - sizeof(odsn), "ODSN data");
}
