/*!
Get
@return length of name field; 0: not found, -1: to be ignored
*/
int
get_rock_ridge_filename(iso9660_dir_t * p_iso9660_dir,
/*out*/ char * psz_name,
/*in/out*/ iso9660_stat_t *p_stat)
{
int len;
unsigned char *chr;
int symlink_len = 0;
CONTINUE_DECLS;
int i_namelen = 0;
int truncate=0;
if (!p_stat || nope == p_stat->rr.b3_rock) return 0;
*psz_name = 0;
SETUP_ROCK_RIDGE(p_iso9660_dir, chr, len);
/*repeat:*/
{
iso_extension_record_t * rr;
int sig;
int rootflag;
while (len > 1){ /* There may be one byte for padding somewhere */
rr = (iso_extension_record_t *) chr;
if (rr->len == 0) goto out; /* Something got screwed up here */
sig = *chr+(*(chr+1) << 8);
chr += rr->len;
len -= rr->len;
switch(sig){
case SIG('S','P'):
CHECK_SP(goto out);
break;
case SIG('C','E'):
{
iso711_t i_fname = from_711(p_iso9660_dir->filename.len);
if ('\0' == p_iso9660_dir->filename.str[1] && 1 == i_fname)
break;
if ('\1' == p_iso9660_dir->filename.str[1] && 1 == i_fname)
break;
}
CHECK_CE;
break;
case SIG('E','R'):
p_stat->rr.b3_rock = yep;
cdio_debug("ISO 9660 Extensions: ");
{
int p;
for(p=0;p<rr->u.ER.len_id;p++) cdio_debug("%c",rr->u.ER.data[p]);
}
break;
case SIG('N','M'):
/* Alternate name */
p_stat->rr.b3_rock = yep;
if (truncate) break;
if (rr->u.NM.flags & ISO_ROCK_NM_PARENT) {
i_namelen = sizeof("..");
strncat(psz_name, "..", i_namelen);
} else if (rr->u.NM.flags & ISO_ROCK_NM_CURRENT) {
i_namelen = sizeof(".");
strncat(psz_name, ".", i_namelen);
break;
}
if (rr->u.NM.flags & ~1) {
cdio_info("Unsupported NM flag settings (%d)",rr->u.NM.flags);
break;
}
if((strlen(psz_name) + rr->len - 5) >= 254) {
truncate = 1;
break;
}
strncat(psz_name, rr->u.NM.name, rr->len - 5);
i_namelen += rr->len - 5;
break;
case SIG('P','X'):
/* POSIX file attributes */
p_stat->rr.st_mode = from_733(rr->u.PX.st_mode);
p_stat->rr.st_nlinks = from_733(rr->u.PX.st_nlinks);
p_stat->rr.st_uid = from_733(rr->u.PX.st_uid);
p_stat->rr.st_gid = from_733(rr->u.PX.st_gid);
p_stat->rr.b3_rock = yep;
break;
case SIG('S','L'):
{
/* Symbolic link */
uint8_t slen;
iso_rock_sl_part_t * p_sl;
iso_rock_sl_part_t * p_oldsl;
slen = rr->len - 5;
p_sl = &rr->u.SL.link;
p_stat->rr.i_symlink = symlink_len;
while (slen > 1){
rootflag = 0;
switch(p_sl->flags &~1){
case 0:
realloc_symlink(p_stat, p_sl->len);
memcpy(&(p_stat->rr.psz_symlink[p_stat->rr.i_symlink]),
p_sl->text, p_sl->len);
p_stat->rr.i_symlink += p_sl->len;
break;
case 4:
realloc_symlink(p_stat, 1);
p_stat->rr.psz_symlink[p_stat->rr.i_symlink++] = '.';
/* continue into next case. */
case 2:
realloc_symlink(p_stat, 1);
p_stat->rr.psz_symlink[p_stat->rr.i_symlink++] = '.';
break;
case 8:
rootflag = 1;
realloc_symlink(p_stat, 1);
p_stat->rr.psz_symlink[p_stat->rr.i_symlink++] = '/';
break;
default:
cdio_warn("Symlink component flag not implemented");
}
slen -= p_sl->len + 2;
p_oldsl = p_sl;
p_sl = (iso_rock_sl_part_t *) (((char *) p_sl) + p_sl->len + 2);
if (slen < 2) {
if (((rr->u.SL.flags & 1) != 0) && ((p_oldsl->flags & 1) == 0))
p_stat->rr.i_symlink += 1;
break;
}
/*
* If this component record isn't continued, then append a '/'.
*/
if (!rootflag && (p_oldsl->flags & 1) == 0) {
realloc_symlink(p_stat, 1);
p_stat->rr.psz_symlink[p_stat->rr.i_symlink++] = '/';
}
}
}
symlink_len = p_stat->rr.i_symlink;
realloc_symlink(p_stat, 1);
p_stat->rr.psz_symlink[symlink_len]='\0';
break;
case SIG('R','E'):
free(buffer);
return -1;
case SIG('T','F'):
/* Time stamp(s) for a file */
{
int cnt = 0;
add_time(ISO_ROCK_TF_CREATE, create);
add_time(ISO_ROCK_TF_MODIFY, modify);
add_time(ISO_ROCK_TF_ACCESS, access);
add_time(ISO_ROCK_TF_ATTRIBUTES, attributes);
add_time(ISO_ROCK_TF_BACKUP, backup);
add_time(ISO_ROCK_TF_EXPIRATION, expiration);
add_time(ISO_ROCK_TF_EFFECTIVE, effective);
p_stat->rr.b3_rock = yep;
break;
}
default:
break;
}
}
}
free(buffer);
return i_namelen; /* If 0, this file did not have a NM field */
out:
free(buffer);
return 0;
}
static int
parse_rock_ridge_stat_internal(iso9660_dir_t *p_iso9660_dir,
iso9660_stat_t *p_stat, int regard_xa)
{
int len;
unsigned char * chr;
int symlink_len = 0;
CONTINUE_DECLS;
if (nope == p_stat->rr.b3_rock) return 0;
SETUP_ROCK_RIDGE(p_iso9660_dir, chr, len);
if (regard_xa)
{
chr+=14;
len-=14;
if (len<0) len=0;
}
/* repeat:*/
{
int sig;
iso_extension_record_t * rr;
int rootflag;
while (len > 1){ /* There may be one byte for padding somewhere */
rr = (iso_extension_record_t *) chr;
if (rr->len == 0) goto out; /* Something got screwed up here */
sig = from_721(*chr);
chr += rr->len;
len -= rr->len;
switch(sig){
case SIG('S','P'):
CHECK_SP(goto out);
break;
case SIG('C','E'):
CHECK_CE;
break;
case SIG('E','R'):
p_stat->rr.b3_rock = yep;
cdio_debug("ISO 9660 Extensions: ");
{ int p;
for(p=0;p<rr->u.ER.len_id;p++) cdio_debug("%c",rr->u.ER.data[p]);
}
break;
case SIG('P','X'):
p_stat->rr.st_mode = from_733(rr->u.PX.st_mode);
p_stat->rr.st_nlinks = from_733(rr->u.PX.st_nlinks);
p_stat->rr.st_uid = from_733(rr->u.PX.st_uid);
p_stat->rr.st_gid = from_733(rr->u.PX.st_gid);
break;
case SIG('P','N'):
/* Device major,minor number */
{ int32_t high, low;
high = from_733(rr->u.PN.dev_high);
low = from_733(rr->u.PN.dev_low);
/*
* The Rock Ridge standard specifies that if sizeof(dev_t) <= 4,
* then the high field is unused, and the device number is completely
* stored in the low field. Some writers may ignore this subtlety,
* and as a result we test to see if the entire device number is
* stored in the low field, and use that.
*/
if((low & ~0xff) && high == 0) {
p_stat->rr.i_rdev = CDIO_MKDEV(low >> 8, low & 0xff);
} else {
p_stat->rr.i_rdev = CDIO_MKDEV(high, low);
}
}
break;
case SIG('T','F'):
/* Time stamp(s) for a file */
{
int cnt = 0;
add_time(ISO_ROCK_TF_CREATE, create);
add_time(ISO_ROCK_TF_MODIFY, modify);
add_time(ISO_ROCK_TF_ACCESS, access);
add_time(ISO_ROCK_TF_ATTRIBUTES, attributes);
add_time(ISO_ROCK_TF_BACKUP, backup);
add_time(ISO_ROCK_TF_EXPIRATION, expiration);
add_time(ISO_ROCK_TF_EFFECTIVE, effective);
p_stat->rr.b3_rock = yep;
break;
}
case SIG('S','L'):
{
/* Symbolic link */
uint8_t slen;
iso_rock_sl_part_t * p_sl;
iso_rock_sl_part_t * p_oldsl;
slen = rr->len - 5;
p_sl = &rr->u.SL.link;
p_stat->rr.i_symlink = symlink_len;
while (slen > 1){
rootflag = 0;
switch(p_sl->flags &~1){
case 0:
realloc_symlink(p_stat, p_sl->len);
memcpy(&(p_stat->rr.psz_symlink[p_stat->rr.i_symlink]),
p_sl->text, p_sl->len);
p_stat->rr.i_symlink += p_sl->len;
break;
case 4:
realloc_symlink(p_stat, 1);
p_stat->rr.psz_symlink[p_stat->rr.i_symlink++] = '.';
/* continue into next case. */
case 2:
realloc_symlink(p_stat, 1);
p_stat->rr.psz_symlink[p_stat->rr.i_symlink++] = '.';
break;
case 8:
rootflag = 1;
realloc_symlink(p_stat, 1);
p_stat->rr.psz_symlink[p_stat->rr.i_symlink++] = '/';
p_stat->rr.i_symlink++;
break;
default:
cdio_warn("Symlink component flag not implemented");
}
slen -= p_sl->len + 2;
p_oldsl = p_sl;
p_sl = (iso_rock_sl_part_t *) (((char *) p_sl) + p_sl->len + 2);
if (slen < 2) {
if (((rr->u.SL.flags & 1) != 0) && ((p_oldsl->flags & 1) == 0))
p_stat->rr.i_symlink += 1;
break;
}
/*
* If this component record isn't continued, then append a '/'.
*/
if (!rootflag && (p_oldsl->flags & 1) == 0) {
realloc_symlink(p_stat, 1);
p_stat->rr.psz_symlink[p_stat->rr.i_symlink++] = '/';
}
}
}
symlink_len = p_stat->rr.i_symlink;
realloc_symlink(p_stat, 1);
p_stat->rr.psz_symlink[symlink_len]='\0';
break;
case SIG('R','E'):
cdio_warn("Attempt to read p_stat for relocated directory");
goto out;
#ifdef FINISHED
case SIG('C','L'):
{
iso9660_stat_t * reloc;
ISOFS_I(p_stat)->i_first_extent = from_733(rr->u.CL.location);
reloc = isofs_iget(p_stat->rr.i_sb, p_stat->rr.i_first_extent, 0);
if (!reloc)
goto out;
p_stat->rr.st_mode = reloc->st_mode;
p_stat->rr.st_nlinks = reloc->st_nlinks;
p_stat->rr.st_uid = reloc->st_uid;
p_stat->rr.st_gid = reloc->st_gid;
p_stat->rr.i_rdev = reloc->i_rdev;
p_stat->rr.i_symlink = reloc->i_symlink;
p_stat->rr.i_blocks = reloc->i_blocks;
p_stat->rr.i_atime = reloc->i_atime;
p_stat->rr.i_ctime = reloc->i_ctime;
p_stat->rr.i_mtime = reloc->i_mtime;
iput(reloc);
}
break;
#endif
default:
break;
}
}
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 parse_rock_ridge_inode_internal(struct iso_directory_record * de,
struct inode * inode,int regard_xa){
int len;
unsigned char * chr;
int symlink_len = 0;
CONTINUE_DECLS;
if (!inode->i_sb->u.isofs_sb.s_rock) return 0;
SETUP_ROCK_RIDGE(de, chr, len);
if (regard_xa)
{
chr+=14;
len-=14;
if (len<0) len=0;
};
repeat:
{
int cnt, sig;
struct inode * reloc;
struct rock_ridge * rr;
int rootflag;
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){
#ifndef CONFIG_ZISOFS /* No flag for SF or ZF */
case SIG('R','R'):
if((rr->u.RR.flags[0] &
(RR_PX | RR_TF | RR_SL | RR_CL)) == 0) goto out;
break;
#endif
case SIG('S','P'):
CHECK_SP(goto out);
break;
case SIG('C','E'):
CHECK_CE;
break;
case SIG('E','R'):
inode->i_sb->u.isofs_sb.s_rock = 1;
printk(KERN_DEBUG "ISO 9660 Extensions: ");
{ int p;
for(p=0;p<rr->u.ER.len_id;p++) printk("%c",rr->u.ER.data[p]);
}
printk("\n");
break;
case SIG('P','X'):
inode->i_mode = isonum_733(rr->u.PX.mode);
inode->i_nlink = isonum_733(rr->u.PX.n_links);
inode->i_uid = isonum_733(rr->u.PX.uid);
inode->i_gid = isonum_733(rr->u.PX.gid);
break;
case SIG('P','N'):
{ int high, low;
high = isonum_733(rr->u.PN.dev_high);
low = isonum_733(rr->u.PN.dev_low);
/*
* The Rock Ridge standard specifies that if sizeof(dev_t) <= 4,
* then the high field is unused, and the device number is completely
* stored in the low field. Some writers may ignore this subtlety,
* and as a result we test to see if the entire device number is
* stored in the low field, and use that.
*/
if((low & ~0xff) && high == 0) {
inode->i_rdev = MKDEV(low >> 8, low & 0xff);
} else {
inode->i_rdev = MKDEV(high, low);
}
}
break;
case SIG('T','F'):
/* Some RRIP writers incorrectly place ctime in the TF_CREATE field.
Try to handle this correctly for either case. */
cnt = 0; /* Rock ridge never appears on a High Sierra disk */
if(rr->u.TF.flags & TF_CREATE)
inode->i_ctime = iso_date(rr->u.TF.times[cnt++].time, 0);
if(rr->u.TF.flags & TF_MODIFY)
inode->i_mtime = iso_date(rr->u.TF.times[cnt++].time, 0);
if(rr->u.TF.flags & TF_ACCESS)
inode->i_atime = iso_date(rr->u.TF.times[cnt++].time, 0);
if(rr->u.TF.flags & TF_ATTRIBUTES)
inode->i_ctime = iso_date(rr->u.TF.times[cnt++].time, 0);
break;
case SIG('S','L'):
{int slen;
struct SL_component * slp;
struct SL_component * oldslp;
slen = rr->len - 5;
slp = &rr->u.SL.link;
inode->i_size = symlink_len;
while (slen > 1){
rootflag = 0;
switch(slp->flags &~1){
case 0:
inode->i_size += slp->len;
break;
case 2:
inode->i_size += 1;
break;
case 4:
inode->i_size += 2;
break;
case 8:
rootflag = 1;
inode->i_size += 1;
break;
default:
printk("Symlink component flag not implemented\n");
}
slen -= slp->len + 2;
oldslp = slp;
slp = (struct SL_component *) (((char *) slp) + slp->len + 2);
if(slen < 2) {
if( ((rr->u.SL.flags & 1) != 0)
&& ((oldslp->flags & 1) == 0) ) inode->i_size += 1;
break;
}
/*
* If this component record isn't continued, then append a '/'.
*/
if (!rootflag && (oldslp->flags & 1) == 0)
inode->i_size += 1;
}
}
symlink_len = inode->i_size;
break;
case SIG('R','E'):
printk(KERN_WARNING "Attempt to read inode for relocated directory\n");
goto out;
case SIG('C','L'):
inode->u.isofs_i.i_first_extent = isonum_733(rr->u.CL.location);
reloc = iget(inode->i_sb,
(inode->u.isofs_i.i_first_extent <<
inode -> i_sb -> u.isofs_sb.s_log_zone_size));
if (!reloc)
goto out;
inode->i_mode = reloc->i_mode;
inode->i_nlink = reloc->i_nlink;
inode->i_uid = reloc->i_uid;
inode->i_gid = reloc->i_gid;
inode->i_rdev = reloc->i_rdev;
inode->i_size = reloc->i_size;
inode->i_blocks = reloc->i_blocks;
inode->i_atime = reloc->i_atime;
inode->i_ctime = reloc->i_ctime;
inode->i_mtime = reloc->i_mtime;
iput(reloc);
break;
#ifdef CONFIG_ZISOFS
case SIG('Z','F'):
if ( !inode->i_sb->u.isofs_sb.s_nocompress ) {
int algo;
algo = isonum_721(rr->u.ZF.algorithm);
if ( algo == SIG('p','z') ) {
int block_shift = isonum_711(&rr->u.ZF.parms[1]);
if ( block_shift < PAGE_CACHE_SHIFT || block_shift > 17 ) {
printk(KERN_WARNING "isofs: Can't handle ZF block size of 2^%d\n", block_shift);
} else {
/* Note: we don't change i_blocks here */
inode->u.isofs_i.i_file_format = isofs_file_compressed;
/* Parameters to compression algorithm (header size, block size) */
inode->u.isofs_i.i_format_parm[0] = isonum_711(&rr->u.ZF.parms[0]);
inode->u.isofs_i.i_format_parm[1] = isonum_711(&rr->u.ZF.parms[1]);
inode->i_size = isonum_733(rr->u.ZF.real_size);
}
} else {
printk(KERN_WARNING "isofs: Unknown ZF compression algorithm: %c%c\n",
rr->u.ZF.algorithm[0], rr->u.ZF.algorithm[1]);
}
}
break;
#endif
default:
break;
}
}
/* 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 parse_rock_ridge_inode(struct iso_directory_record * de,
struct inode * inode){
int len;
unsigned char * chr;
int symlink_len = 0;
CONTINUE_DECLS;
if (!inode->i_sb->u.isofs_sb.s_rock) return 0;
SETUP_ROCK_RIDGE(de, chr, len);
repeat:
{
int cnt, sig;
struct inode * reloc;
struct rock_ridge * rr;
int rootflag;
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_PX | RR_TF | RR_SL | RR_CL)) == 0) goto out;
break;
case SIG('S','P'):
CHECK_SP(goto out);
break;
case SIG('C','E'):
CHECK_CE;
break;
case SIG('E','R'):
inode->i_sb->u.isofs_sb.s_rock = 1;
printk(KERN_DEBUG"ISO9660 Extensions: ");
{ int p;
for(p=0;p<rr->u.ER.len_id;p++) printk("%c",rr->u.ER.data[p]);
};
printk("\n");
break;
case SIG('P','X'):
inode->i_mode = isonum_733(rr->u.PX.mode);
inode->i_nlink = isonum_733(rr->u.PX.n_links);
inode->i_uid = isonum_733(rr->u.PX.uid);
inode->i_gid = isonum_733(rr->u.PX.gid);
break;
case SIG('P','N'):
{ int high, low;
high = isonum_733(rr->u.PN.dev_high);
low = isonum_733(rr->u.PN.dev_low);
/*
* The Rock Ridge standard specifies that if sizeof(dev_t) <= 4,
* then the high field is unused, and the device number is completely
* stored in the low field. Some writers may ignore this subtlety,
* and as a result we test to see if the entire device number is
* stored in the low field, and use that.
*/
if((low & ~0xff) && high == 0) {
inode->i_rdev = MKDEV(low >> 8, low & 0xff);
} else {
inode->i_rdev = MKDEV(high, low);
}
};
break;
case SIG('T','F'):
{
struct stamp *times = (struct stamp *) &(rr->u.TF.__times);
/* Some RRIP writers incorrectly place ctime in the TF_CREATE field.
Try to handle this correctly for either case. */
cnt = 0; /* Rock ridge never appears on a High Sierra disk */
if(rr->u.TF.flags & TF_CREATE)
inode->i_ctime = iso_date(times[cnt++].time, 0);
if(rr->u.TF.flags & TF_MODIFY)
inode->i_mtime = iso_date(times[cnt++].time, 0);
if(rr->u.TF.flags & TF_ACCESS)
inode->i_atime = iso_date(times[cnt++].time, 0);
if(rr->u.TF.flags & TF_ATTRIBUTES)
inode->i_ctime = iso_date(times[cnt++].time, 0);
break;
}
case SIG('S','L'):
{int slen;
struct SL_component * slp;
struct SL_component * oldslp;
slen = rr->len - 5;
slp = (struct SL_component *)&rr->u.SL.__link;
inode->i_size = symlink_len;
while (slen > 1){
rootflag = 0;
switch(slp->flags &~1){
case 0:
inode->i_size += slp->len;
break;
case 2:
inode->i_size += 1;
break;
case 4:
inode->i_size += 2;
break;
case 8:
rootflag = 1;
inode->i_size += 1;
break;
default:
printk("Symlink component flag not implemented\n");
};
slen -= slp->len + 2;
oldslp = slp;
slp = (struct SL_component *) (((char *) slp) + slp->len + 2);
if(slen < 2) {
if( ((rr->u.SL.flags & 1) != 0)
&& ((oldslp->flags & 1) == 0) ) inode->i_size += 1;
break;
}
/*
* If this component record isn't continued, then append a '/'.
*/
if( (!rootflag)
&& ((oldslp->flags & 1) == 0) ) inode->i_size += 1;
}
}
symlink_len = inode->i_size;
break;
case SIG('R','E'):
printk("Attempt to read inode for relocated directory\n");
goto out;
case SIG('C','L'):
#ifdef DEBUG
printk("RR CL (%x)\n",inode->i_ino);
#endif
inode->u.isofs_i.i_first_extent = isonum_733(rr->u.CL.location) <<
inode -> i_sb -> u.isofs_sb.s_log_zone_size;
reloc = iget(inode->i_sb, inode->u.isofs_i.i_first_extent);
inode->i_mode = reloc->i_mode;
inode->i_nlink = reloc->i_nlink;
inode->i_uid = reloc->i_uid;
inode->i_gid = reloc->i_gid;
inode->i_rdev = reloc->i_rdev;
inode->i_size = reloc->i_size;
inode->i_atime = reloc->i_atime;
inode->i_ctime = reloc->i_ctime;
inode->i_mtime = reloc->i_mtime;
iput(reloc);
break;
default:
break;
}
};
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;
}
