/* return length of name field; 0: not found, -1: to be ignored */
int get_rock_ridge_filename(struct iso_directory_record * de,
char * retname, struct inode * inode)
{
int len;
unsigned char * chr;
CONTINUE_DECLS;
int retnamlen = 0, truncate=0;
if (!inode->i_sb->u.isofs_sb.s_rock) return 0;
*retname = 0;
SETUP_ROCK_RIDGE(de, chr, len);
repeat:
{
struct rock_ridge * rr;
int sig;
while (len > 1){ /* There may be one byte for padding somewhere */
rr = (struct rock_ridge *) chr;
if (rr->len == 0) goto out; /* Something got screwed up here */
sig = isonum_721(chr);
chr += rr->len;
len -= rr->len;
switch(sig){
case SIG('R','R'):
if((rr->u.RR.flags[0] & RR_NM) == 0) goto out;
break;
case SIG('S','P'):
CHECK_SP(goto out);
break;
case SIG('C','E'):
CHECK_CE;
break;
case SIG('N','M'):
if (truncate) break;
/*
* If the flags are 2 or 4, this indicates '.' or '..'.
* We don't want to do anything with this, because it
* screws up the code that calls us. We don't really
* care anyways, since we can just use the non-RR
* name.
*/
if (rr->u.NM.flags & 6) {
break;
}
if (rr->u.NM.flags & ~1) {
printk("Unsupported NM flag settings (%d)\n",rr->u.NM.flags);
break;
}
if((strlen(retname) + rr->len - 5) >= 254) {
truncate = 1;
break;
}
strncat(retname, rr->u.NM.name, rr->len - 5);
retnamlen += rr->len - 5;
break;
case SIG('R','E'):
if (buffer) kfree(buffer);
return -1;
default:
break;
}
}
}
MAYBE_CONTINUE(repeat,inode);
return retnamlen; /* If 0, this file did not have a NM field */
out:
if(buffer) kfree(buffer);
return 0;
}
int find_rock_ridge_relocation(struct iso_directory_record * de,
struct inode * inode) {
int flag;
int len;
int retval;
unsigned char * chr;
CONTINUE_DECLS;
flag = 0;
/* If this is a '..' then we are looking for the parent, otherwise we
are looking for the child */
if (de->name[0]==1 && de->name_len[0]==1) flag = 1;
/* Return value if we do not find appropriate record. */
retval = isonum_733 (de->extent);
if (!inode->i_sb->u.isofs_sb.s_rock) return retval;
SETUP_ROCK_RIDGE(de, chr, len);
repeat:
{
int rrflag, sig;
struct rock_ridge * rr;
while (len > 1){ /* There may be one byte for padding somewhere */
rr = (struct rock_ridge *) chr;
if (rr->len == 0) goto out; /* Something got screwed up here */
sig = isonum_721(chr);
chr += rr->len;
len -= rr->len;
switch(sig){
case SIG('R','R'):
rrflag = rr->u.RR.flags[0];
if (flag && !(rrflag & RR_PL)) goto out;
if (!flag && !(rrflag & RR_CL)) goto out;
break;
case SIG('S','P'):
CHECK_SP(goto out);
break;
case SIG('C','L'):
if (flag == 0) {
retval = isonum_733(rr->u.CL.location);
goto out;
}
break;
case SIG('P','L'):
if (flag != 0) {
retval = isonum_733(rr->u.PL.location);
goto out;
}
break;
case SIG('C','E'):
CHECK_CE; /* This tells is if there is a continuation record */
break;
default:
break;
}
}
}
MAYBE_CONTINUE(repeat, inode);
return retval;
out:
if(buffer) kfree(buffer);
return retval;
}
int get_rock_ridge_filename(struct iso_directory_record * de,
char * retname, struct inode * inode)
{
int len;
unsigned char * chr;
CONTINUE_DECLS;
int retnamlen = 0, truncate=0;
if (!inode->i_sb->u.isofs_sb.s_rock) return 0;
*retname = 0;
retnamlen = 0;
SETUP_ROCK_RIDGE(de, chr, len);
repeat:
{
struct rock_ridge * rr;
int sig;
while (len > 1){ /* There may be one byte for padding somewhere */
rr = (struct rock_ridge *) chr;
if (rr->len == 0) goto out; /* Something got screwed up here */
sig = (chr[0] << 8) + chr[1];
chr += rr->len;
len -= rr->len;
switch(sig){
case SIG('R','R'):
if((rr->u.RR.flags[0] & RR_NM) == 0) goto out;
break;
case SIG('S','P'):
CHECK_SP(goto out);
break;
case SIG('C','E'):
CHECK_CE;
break;
case SIG('N','M'):
if (truncate) break;
if (rr->u.NM.flags & ~1) {
printk("Unsupported NM flag settings (%d)\n",rr->u.NM.flags);
break;
};
if((strlen(retname) + rr->len - 5) >= 254) {
truncate = 1;
break;
};
strncat(retname, rr->u.NM.name, rr->len - 5);
retnamlen += rr->len - 5;
break;
case SIG('R','E'):
#ifdef DEBUG
printk("RR: RE (%x)\n", inode->i_ino);
#endif
if (buffer) kfree(buffer);
return -1;
default:
break;
}
};
}
MAYBE_CONTINUE(repeat,inode);
return retnamlen; /* If 0, this file did not have a NM field */
out:
if(buffer) kfree(buffer);
return 0;
}
