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1 | // SPDX-License-Identifier: GPL-2.0 | |
2 | /* | |
3 | * Symlink inode operations for Coda filesystem | |
4 | * Original version: (C) 1996 P. Braam and M. Callahan | |
5 | * Rewritten for Linux 2.1. (C) 1997 Carnegie Mellon University | |
6 | * | |
7 | * Carnegie Mellon encourages users to contribute improvements to | |
8 | * the Coda project. Contact Peter Braam (coda@cs.cmu.edu). | |
9 | */ | |
10 | ||
11 | #include <linux/types.h> | |
12 | #include <linux/kernel.h> | |
13 | #include <linux/time.h> | |
14 | #include <linux/fs.h> | |
15 | #include <linux/stat.h> | |
16 | #include <linux/errno.h> | |
17 | #include <linux/pagemap.h> | |
18 | ||
19 | #include <linux/coda.h> | |
20 | #include "coda_psdev.h" | |
21 | #include "coda_linux.h" | |
22 | ||
23 | static int coda_symlink_filler(struct file *file, struct folio *folio) | |
24 | { | |
25 | struct inode *inode = folio->mapping->host; | |
26 | int error; | |
27 | struct coda_inode_info *cii; | |
28 | unsigned int len = PAGE_SIZE; | |
29 | char *p = folio_address(folio); | |
30 | ||
31 | cii = ITOC(inode); | |
32 | ||
33 | error = venus_readlink(inode->i_sb, &cii->c_fid, p, &len); | |
34 | if (error) | |
35 | goto fail; | |
36 | folio_mark_uptodate(folio); | |
37 | folio_unlock(folio); | |
38 | return 0; | |
39 | ||
40 | fail: | |
41 | folio_set_error(folio); | |
42 | folio_unlock(folio); | |
43 | return error; | |
44 | } | |
45 | ||
46 | const struct address_space_operations coda_symlink_aops = { | |
47 | .read_folio = coda_symlink_filler, | |
48 | }; |