// SPDX-License-Identifier: GPL-2.0

  /*
   * QNX6 file system, Linux implementation.
   *
   * Version : 1.0.0
   *
   * History :
   *
   * 01-02-2012 by Kai Bankett (chaosman@ontika.net) : 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)) {

  			pr_debug("lookup->iget ->  error %ld
  ",
  				 PTR_ERR(foundinode));

  			return ERR_CAST(foundinode);
  		}
  	} else {

  		pr_debug("%s(): not found %s
  ", __func__, name);

  		return NULL;
  	}
  	d_add(dentry, foundinode);
  	return NULL;
  }