xref: /openbmc/linux/fs/qnx6/namei.c (revision 0c6dfa75)
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 
16 struct 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