dentry.c

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/*
 *  linux/fs/hpfs/dentry.c
 *
 *  Mikulas Patocka ([email protected]), 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,
};