64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/*
|
|
* linux/fs/hpfs/dentry.c
|
|
*
|
|
* Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
|
|
*
|
|
* dcache operations
|
|
*/
|
|
|
|
#include "hpfs_fn.h"
|
|
|
|
/*
|
|
* Note: the dentry argument is the parent dentry.
|
|
*/
|
|
|
|
static int hpfs_hash_dentry(const struct dentry *dentry, const struct inode *inode,
|
|
struct qstr *qstr)
|
|
{
|
|
unsigned long hash;
|
|
int i;
|
|
unsigned l = qstr->len;
|
|
|
|
if (l == 1) if (qstr->name[0]=='.') goto x;
|
|
if (l == 2) if (qstr->name[0]=='.' || qstr->name[1]=='.') goto x;
|
|
hpfs_adjust_length(qstr->name, &l);
|
|
/*if (hpfs_chk_name(qstr->name,&l))*/
|
|
/*return -ENAMETOOLONG;*/
|
|
/*return -ENOENT;*/
|
|
x:
|
|
|
|
hash = init_name_hash();
|
|
for (i = 0; i < l; i++)
|
|
hash = partial_name_hash(hpfs_upcase(hpfs_sb(dentry->d_sb)->sb_cp_table,qstr->name[i]), hash);
|
|
qstr->hash = end_name_hash(hash);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hpfs_compare_dentry(const struct dentry *parent,
|
|
const struct inode *pinode,
|
|
const struct dentry *dentry, const struct inode *inode,
|
|
unsigned int len, const char *str, const struct qstr *name)
|
|
{
|
|
unsigned al = len;
|
|
unsigned bl = name->len;
|
|
|
|
hpfs_adjust_length(str, &al);
|
|
/*hpfs_adjust_length(b->name, &bl);*/
|
|
|
|
/*
|
|
* 'str' is the nane of an already existing dentry, so the name
|
|
* must be valid. 'name' must be validated first.
|
|
*/
|
|
|
|
if (hpfs_chk_name(name->name, &bl))
|
|
return 1;
|
|
if (hpfs_compare_names(parent->d_sb, str, al, name->name, bl, 0))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
const struct dentry_operations hpfs_dentry_operations = {
|
|
.d_hash = hpfs_hash_dentry,
|
|
.d_compare = hpfs_compare_dentry,
|
|
};
|