int open(const char *path, int flags)
{
const char *filepath;
BVRef bvr;
// Resolve the boot volume from the file spec.
if ((bvr = getBootVolumeRef(path, &filepath)) != NULL) {
return open_bvr(bvr, filepath, flags);
}
return -1;
}
int open_bvdev(const char *bvd, const char *path, int flags)
{
const struct devsw *dp;
const char *cp;
BVRef bvr;
int i;
int len;
int unit;
int partition;
if ((i = open(path, flags)) >= 0) {
return i;
}
if (bvd == NULL || (len = strlen(bvd)) < 2) {
return -1;
}
for (dp=devsw; dp->name; dp++) {
if (bvd[0] == dp->name[0] && bvd[1] == dp->name[1]) {
unit = 0;
partition = 0;
/* get optional unit and partition */
if (len >= 5 && bvd[2] == '(') { /* min must be present xx(0) */
cp = &bvd[3];
i = 0;
while ((cp - path) < len && isdigit(*cp)) {
i = i * 10 + *cp++ - '0';
unit = i;
}
if (*cp++ == ',') {
i = 0;
while ((cp - path) < len && isdigit(*cp)) {
i = i * 10 + *cp++ - '0';
partition = i;
}
}
}
// turbo - bt(0,0) hook
if ((dp->biosdev + unit) == 0x101) {
// zef - use the ramdisk if available and the alias is active.
if (gRAMDiskVolume != NULL && gRAMDiskBTAliased) {
bvr = gRAMDiskVolume;
} else {
bvr = gBIOSBootVolume;
}
} else {
bvr = newBootVolumeRef(dp->biosdev + unit, partition);
}
return open_bvr(bvr, path, flags);
}
}
return -1;
}
int open_bvdev(const char *bvd, const char *path, int flags)
{
const struct devsw *dp;
const char *cp;
BVRef bvr;
int i;
int len;
int unit;
int partition;
if ((i = open(path, flags)) >= 0)
{
return i;
}
if (bvd == NULL || (len = strlen(bvd)) < 2)
{
return -1;
}
for (dp=devsw; dp->name; dp++)
{
if (bvd[0] == dp->name[0] && bvd[1] == dp->name[1])
{
unit = 0;
partition = 0;
/* get optional unit and partition */
if (len >= 5 && bvd[2] == '(') { /* min must be present xx(0) */
cp = &bvd[3];
i = 0;
while ((cp - path) < len && isdigit(*cp))
{
i = i * 10 + *cp++ - '0';
unit = i;
}
if (*cp++ == ',')
{
i = 0;
while ((cp - path) < len && isdigit(*cp))
{
i = i * 10 + *cp++ - '0';
partition = i;
}
}
}
bvr = newBootVolumeRef(dp->biosdev + unit, partition);
return open_bvr(bvr, path, flags);
}
}
return -1;
}
