fs/qnx6/namei.c

   1 /*
   2  * QNX6 file system, Linux implementation.
   3  *
   4  * Version : 1.0.0
   5  *
   6  * History :
   7  *
   8  * 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release.
   9  * 16-02-2012 pagemap extension by Al Viro
  10  *
  11  */
  12
  13 #include "qnx6.h"
  14
  15 struct dentry *qnx6_lookup(struct inode *dir, struct dentry *dentry,
  16                                 unsigned int flags)
  17 {
  18         unsigned ino;
  19         struct page *page;
  20         struct inode *foundinode = NULL;
  21         const char *name = dentry->d_name.name;
  22         int len = dentry->d_name.len;
  23
  24         if (len > QNX6_LONG_NAME_MAX)
  25                 return ERR_PTR(-ENAMETOOLONG);
  26
  27         ino = qnx6_find_entry(len, dir, name, &page);
  28         if (ino) {
  29                 foundinode = qnx6_iget(dir->i_sb, ino);
  30                 qnx6_put_page(page);
  31                 if (IS_ERR(foundinode)) {
  32                         pr_debug("lookup->iget ->  error %ld\n",
  33                                  PTR_ERR(foundinode));
  34                         return ERR_CAST(foundinode);
  35                 }
  36         } else {
  37                 pr_debug("%s(): not found %s\n", __func__, name);
  38                 return NULL;
  39         }
  40         d_add(dentry, foundinode);
  41         return NULL;
  42 }