// This assumes that li ... li+k => (c,h,0) ... (c,h,k-1)
dm_ptol_result_t
g4_track_bound(struct dm_disk_if *d,
struct dm_pbn *pbn,
int *l0,
int *ln,
int *remapsector)
{
int lbn;
struct remap *r;
struct dm_pbn pi;
struct dm_layout_g4 *l = (struct dm_layout_g4 *)d->layout;
int spt = g4_spt_pbn(d, pbn);
/* Dushyanth: must set l0 and ln even if ptol() returns an error */
lbn = ptol(d, pbn, 0);
//if(lbn < 0) {
// return lbn;
//}
if(l0) {
pi = *pbn;
pi.sector = 0;
while((*l0 = ptol(d, &pi, 0)) < 0) {
pi.sector++;
}
ddbg_assert(*l0 < d->dm_sectors);
}
if(ln) {
pi = *pbn;
pi.sector = spt-1;
while((*ln = ptol(d, &pi, 0)) < 0) {
pi.sector--;
ddbg_assert(pi.sector >= 0);
}
ddbg_assert(*ln < d->dm_sectors);
}
if (l0 && ln) {
ddbg_assert(*l0 <= *ln);
}
/* Dushyanth: check error here; see comment above about setting l0, ln */
if(lbn < 0) {
return lbn;
}
return DM_OK;
}
static char * xx(char *str, struct iob *file)
{
register char *cp = str, *xp;
char **dp;
int old_dev = kernBootStruct->kernDev;
int dev = (kernBootStruct->kernDev >> B_TYPESHIFT) & B_TYPEMASK;
int unit = (kernBootStruct->kernDev >> B_UNITSHIFT) & B_UNITMASK;
int part = (kernBootStruct->kernDev >> B_PARTITIONSHIFT) &
B_PARTITIONMASK;
int i;
int no_dev;
int biosOffset;
biosOffset = unit; // set the device
for (; *cp && *cp != LP; cp++) ;
if (no_dev = !*cp) { // no paren found
cp = str;
xp = devsw[dev];
} else if (cp == str) { // paren but no device
cp++;
xp = devsw[dev];
} else {
xp = str;
cp++;
}
for (dp = devsw; *dp; dp++)
{
if ((xp[0] == *dp[0]) && (xp[1] == *(dp[0] + 1)))
goto gotdev;
}
error("Unknown device '%c%c'\n",xp[0],xp[1]);
return ((char *)-1);
gotdev:
if (no_dev)
goto none;
i = 0;
while (*cp >= '0' && *cp <= '9')
{
i = i * 10 + *cp++ - '0';
unit = i;
}
biosOffset = unit; // set the device
if (*cp == RP || no_dev)
/* do nothing since ptol(")") returns 0 */ ;
else if (*cp == ',' )
part = ptol(++cp);
else if (cp[-1] == LP)
part = ptol(cp);
else {
badoff:
error("Missing offset specification\n");
return ((char *)-1);
}
for ( ;!no_dev ;) {
if (*cp == RP)
break;
if (*cp++)
continue;
goto badoff;
}
none:
file->i_ino.i_dev = dev = dp-devsw;
file->partition = part;
file->biosdev = (BIOSDEV(dev)) + biosOffset;
if (dev == DEV_SD) {
file->biosdev += kernBootStruct->numIDEs;
} else if (dev == DEV_HD && kernBootStruct->numIDEs == 0) {
error("No IDE drives detected\n");
return ((char *)-1);
}
kernBootStruct->kernDev = (dev << B_TYPESHIFT) |
(unit << B_UNITSHIFT) |
(part << B_PARTITIONSHIFT);
if (kernBootStruct->kernDev != old_dev)
flushdev();
devopen(str, file);
if (file->i_error)
return (char *)-1;
if (!no_dev && *cp) cp++;
gFilename = cp;
return cp;
}
