void init(std::string path, size_t length) {
this->path = path;
this->length = length;
if (!file_exists(path)) {
FILE * fout = fopen(path.c_str(), "wb");
fclose(fout);
}
if (file_size(path) != sizeof(T) * length) {
long file_length = sizeof(T) * length;
assert(truncate(path.c_str(), file_length)!=-1);
int fout = open(path.c_str(), O_WRONLY);
void * buffer = memalign(PAGESIZE, PAGESIZE);
for (long offset=0;offset<file_length;) {
if (file_length - offset > PAGESIZE) {
assert(write(fout, buffer, PAGESIZE)==PAGESIZE);
offset += PAGESIZE;
}
else {
assert(write(fout, buffer, file_length - offset)==file_length - offset);
offset += file_length - offset;
}
}
close(fout);
}
fd = open(path.c_str(), O_RDWR | O_DIRECT);
assert(fd!=-1);
open_mmap();
}
/* ARGSUSED */
void * map_phys_mem(unsigned long base, unsigned long size)
{
DIOParPkt par;
ULONG plen;
DIODtaPkt dta;
ULONG dlen;
static BOOL ErrRedir = FALSE;
APIRET rc;
par.addr = (ULONG)base;
par.size = (ULONG)size;
plen = sizeof(par);
dlen = sizeof(dta);
open_mmap();
if (mapdev == -1)
{
perror("libdha: device xf86sup.sys is not installed");
exit(1);
}
if ((rc=DosDevIOCtl(mapdev, (ULONG)0x76, (ULONG)0x44,
(PVOID)&par, (ULONG)plen, (PULONG)&plen,
(PVOID)&dta, (ULONG)dlen, (PULONG)&dlen)) == 0) {
if (dlen==sizeof(dta)) {
callcount++;
return (void *)dta.addr;
}
/*else fail*/
}
return (void *)-1;
}
int main(int argc, char *argv[])
{
int i, r = 1;
struct ffile file_old = {
.fd = -1,
.addr = MAP_FAILED,
};
struct ffile file_new = {
.fd = -1,
.addr = MAP_FAILED,
};
if (argc < 3) {
printf("Use: differ old_file new_file change_list.\n");
goto bad;
}
file_old.name = argv[1];
if (!open_mmap(&file_old))
goto bad;
file_new.name = argv[2];
if (!open_mmap(&file_new))
goto bad;
for (i = 3; i < argc; i++)
if (check(argv[i], file_old.addr, file_new.addr) == FAIL) {
printf ("FAILED for %s\n", argv[i]);
r = 1;
goto bad;
}
r = 0;
bad:
close_mmap(&file_new);
close_mmap(&file_old);
return r;
}
void save() {
long end_offset = end_i * sizeof(T);
long offset = begin_i * sizeof(T);
long bytes;
while (offset < end_offset) {
bytes = pwrite(fd, data_in_memory + (offset / sizeof(T) - begin_i), (end_offset - offset + PAGESIZE - 1) / PAGESIZE * PAGESIZE, offset);
if (bytes==-1) {
printf("%ld %ld\n", offset, end_offset);
printf("%s\n", strerror(errno));
getchar();
exit(-1);
}
offset += bytes;
}
int ret = munmap(data_in_memory, (end_i - begin_i) * sizeof(T) + PAGESIZE);
assert(ret==0);
in_memory = false;
begin_i = 0;
end_i = 0;
open_mmap();
}
