/*
* Mount DOS filesystem
*/
static int
dos_mount(DOS_FS *fs, struct open_file *fd)
{
int err;
struct devdesc *dd = fd->f_devdata;
u_char *buf;
bzero(fs, sizeof(DOS_FS));
fs->fd = fd;
if ((err = !(buf = malloc(secbyt(1))) ? errno : 0) ||
(err = ioget(fs->fd, 0, 0, buf, secbyt(1))) ||
(err = parsebs(fs, (DOS_BS *)buf))) {
if (buf != NULL)
free(buf);
(void)dosunmount(fs);
return(err);
}
free(buf);
if (fat.buf == NULL || fat.unit != dd->d_unit)
dos_read_fat(fs, fd);
fs->root = dot[0];
fs->root.name[0] = ' ';
if (fs->fatsz == 32) {
fs->root.clus[0] = fs->rdcl & 0xff;
fs->root.clus[1] = (fs->rdcl >> 8) & 0xff;
fs->root.dex.h_clus[0] = (fs->rdcl >> 16) & 0xff;
fs->root.dex.h_clus[1] = (fs->rdcl >> 24) & 0xff;
}
/*
* Mount DOS filesystem
*/
static int
dos_mount(DOS_FS *fs, struct open_file *fd)
{
int err;
bzero(fs, sizeof(DOS_FS));
fs->fd = fd;
if ((err = !(fs->buf = malloc(SECSIZ)) ? errno : 0) ||
(err = ioget(fs->fd, 0, fs->buf, 1)) ||
(err = parsebs(fs, (DOS_BS *)fs->buf))) {
(void)dosunmount(fs);
return(err);
}
fs->root = dot[0];
fs->root.name[0] = ' ';
if (fs->fatsz == 32) {
fs->root.clus[0] = fs->rdcl & 0xff;
fs->root.clus[1] = (fs->rdcl >> 8) & 0xff;
fs->root.dex.h_clus[0] = (fs->rdcl >> 16) & 0xff;
fs->root.dex.h_clus[1] = (fs->rdcl >> 24) & 0xff;
}
