namei.c

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/*
 * QNX6 file system, Linux implementation.
 *
 * Version : 1.0.0
 *
 * History :
 *
 * 01-02-2012 by Kai Bankett ([email protected]) : first release.
 * 16-02-2012 pagemap extension by Al Viro
 *
 */

#include "qnx6.h"

struct dentry *qnx6_lookup(struct inode *dir, struct dentry *dentry,
                unsigned int flags)
{
    unsigned ino;
    struct page *page;
    struct inode *foundinode = NULL;
    const char *name = dentry->d_name.name;
    int len = dentry->d_name.len;

    if (len > QNX6_LONG_NAME_MAX)
        return ERR_PTR(-ENAMETOOLONG);

    ino = qnx6_find_entry(len, dir, name, &page);
    if (ino) {
        foundinode = qnx6_iget(dir->i_sb, ino);
        qnx6_put_page(page);
        if (IS_ERR(foundinode)) {
            QNX6DEBUG((KERN_ERR "qnx6: lookup->iget -> "
                " error %ld\n", PTR_ERR(foundinode)));
            return ERR_CAST(foundinode);
        }
    } else {
        QNX6DEBUG((KERN_INFO "qnx6_lookup: not found %s\n", name));
        return NULL;
    }
    d_add(dentry, foundinode);
    return NULL;
}