// finds out which hash names are sorted with
static int what_hash (struct super_block * s)
{
__u32 code;
code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(s));
/* reiserfs_hash_detect() == true if any of the hash mount options
** were used. We must check them to make sure the user isn't
** using a bad hash value
*/
if (code == UNSET_HASH || reiserfs_hash_detect(s))
code = find_hash_out (s);
if (code != UNSET_HASH && reiserfs_hash_detect(s)) {
/* detection has found the hash, and we must check against the
** mount options
*/
if (reiserfs_rupasov_hash(s) && code != YURA_HASH) {
printk("REISERFS: Error, %s hash detected, "
"unable to force rupasov hash\n", reiserfs_hashname(code)) ;
code = UNSET_HASH ;
} else if (reiserfs_tea_hash(s) && code != TEA_HASH) {
printk("REISERFS: Error, %s hash detected, "
"unable to force tea hash\n", reiserfs_hashname(code)) ;
code = UNSET_HASH ;
} else if (reiserfs_r5_hash(s) && code != R5_HASH) {
printk("REISERFS: Error, %s hash detected, "
"unable to force r5 hash\n", reiserfs_hashname(code)) ;
code = UNSET_HASH ;
}
} else {
/* find_hash_out was not called or could not determine the hash */
if (reiserfs_rupasov_hash(s)) {
code = YURA_HASH ;
} else if (reiserfs_tea_hash(s)) {
code = TEA_HASH ;
} else if (reiserfs_r5_hash(s)) {
code = R5_HASH ;
}
}
/* if we are mounted RW, and we have a new valid hash code, update
** the super
*/
if (code != UNSET_HASH &&
!(s->s_flags & MS_RDONLY) &&
code != sb_hash_function_code(SB_DISK_SUPER_BLOCK(s))) {
set_sb_hash_function_code(SB_DISK_SUPER_BLOCK(s), code);
}
return code;
}
/* Finds out which hash names are sorted with */
static int
what_hash(struct reiserfs_mount *rmp)
{
uint32_t code;
struct reiserfs_sb_info *sbi = rmp->rm_reiserfs;
find_hash_out(rmp);
code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(sbi));
/*
* reiserfs_hash_detect() == true if any of the hash mount options
* were used. We must check them to make sure the user isn't using a
* bad hash value
*/
if (code == UNSET_HASH || reiserfs_hash_detect(sbi))
code = find_hash_out(rmp);
if (code != UNSET_HASH && reiserfs_hash_detect(sbi)) {
/*
* Detection has found the hash, and we must check against
* the mount options
*/
if (reiserfs_rupasov_hash(sbi) && code != YURA_HASH) {
reiserfs_log(LOG_ERR, "error, %s hash detected, "
"unable to force rupasov hash",
reiserfs_hashname(code));
code = UNSET_HASH;
} else if (reiserfs_tea_hash(sbi) && code != TEA_HASH) {
reiserfs_log(LOG_ERR, "error, %s hash detected, "
"unable to force tea hash",
reiserfs_hashname(code));
code = UNSET_HASH;
} else if (reiserfs_r5_hash(sbi) && code != R5_HASH) {
reiserfs_log(LOG_ERR, "error, %s hash detected, "
"unable to force r5 hash",
reiserfs_hashname(code));
code = UNSET_HASH;
}
} else {
/*
* Find_hash_out was not called or could not determine
* the hash
*/
if (reiserfs_rupasov_hash(sbi)) {
code = YURA_HASH;
} else if (reiserfs_tea_hash(sbi)) {
code = TEA_HASH;
} else if (reiserfs_r5_hash(sbi)) {
code = R5_HASH;
}
}
/* TODO Not supported yet */
#if 0
/* If we are mounted RW, and we have a new valid hash code, update
* the super */
if (code != UNSET_HASH &&
!(s->s_flags & MS_RDONLY) &&
code != sb_hash_function_code(SB_DISK_SUPER_BLOCK(s))) {
set_sb_hash_function_code(SB_DISK_SUPER_BLOCK(s), code);
}
#endif
return (code);
}
