fs: initial qnx6fs addition

[karo-tx-linux.git] / fs / qnx6 / namei.c

diff --git a/fs/qnx6/namei.c b/fs/qnx6/namei.c
new file mode 100644 (file)
index 0000000..8a97289
--- /dev/null
+++ b/fs/qnx6/namei.c
@@ -0,0 +1,42 @@
+/*
+ * 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,
+                               struct nameidata *nd)
+{
+       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;
+}