LXR linux/fs/qnx6/namei.c

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * QNX6 file system, Linux implementation.
   4 *
   5 * Version : 1.0.0
   6 *
   7 * History :
   8 *
   9 * 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release.
  10 * 16-02-2012 pagemap extension by Al Viro
  11 *
  12 */
  13
  14#include "qnx6.h"
  15
  16struct dentry *qnx6_lookup(struct inode *dir, struct dentry *dentry,
  17                                unsigned int flags)
  18{
  19        unsigned ino;
  20        struct page *page;
  21        struct inode *foundinode = NULL;
  22        const char *name = dentry->d_name.name;
  23        int len = dentry->d_name.len;
  24
  25        if (len > QNX6_LONG_NAME_MAX)
  26                return ERR_PTR(-ENAMETOOLONG);
  27
  28        ino = qnx6_find_entry(len, dir, name, &page);
  29        if (ino) {
  30                foundinode = qnx6_iget(dir->i_sb, ino);
  31                qnx6_put_page(page);
  32                if (IS_ERR(foundinode))
  33                        pr_debug("lookup->iget ->  error %ld\n",
  34                                 PTR_ERR(foundinode));
  35        } else {
  36                pr_debug("%s(): not found %s\n", __func__, name);
  37        }
  38        return d_splice_alias(foundinode, dentry);
  39}
  40