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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Symlink inode operations for Coda filesystem | |
3 | * Original version: (C) 1996 P. Braam and M. Callahan | |
4 | * Rewritten for Linux 2.1. (C) 1997 Carnegie Mellon University | |
5 | * | |
6 | * Carnegie Mellon encourages users to contribute improvements to | |
7 | * the Coda project. Contact Peter Braam (coda@cs.cmu.edu). | |
8 | */ | |
9 | ||
10 | #include <linux/types.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/time.h> | |
13 | #include <linux/fs.h> | |
14 | #include <linux/stat.h> | |
15 | #include <linux/errno.h> | |
16 | #include <linux/pagemap.h> | |
17 | #include <linux/smp_lock.h> | |
18 | ||
19 | #include <linux/coda.h> | |
20 | #include <linux/coda_linux.h> | |
21 | #include <linux/coda_psdev.h> | |
22 | #include <linux/coda_fs_i.h> | |
23 | #include <linux/coda_proc.h> | |
24 | ||
25 | static int coda_symlink_filler(struct file *file, struct page *page) | |
26 | { | |
27 | struct inode *inode = page->mapping->host; | |
28 | int error; | |
29 | struct coda_inode_info *cii; | |
30 | unsigned int len = PAGE_SIZE; | |
31 | char *p = kmap(page); | |
32 | ||
33 | lock_kernel(); | |
34 | cii = ITOC(inode); | |
35 | coda_vfs_stat.follow_link++; | |
36 | ||
37 | error = venus_readlink(inode->i_sb, &cii->c_fid, p, &len); | |
38 | unlock_kernel(); | |
39 | if (error) | |
40 | goto fail; | |
41 | SetPageUptodate(page); | |
42 | kunmap(page); | |
43 | unlock_page(page); | |
44 | return 0; | |
45 | ||
46 | fail: | |
47 | SetPageError(page); | |
48 | kunmap(page); | |
49 | unlock_page(page); | |
50 | return error; | |
51 | } | |
52 | ||
53 | struct address_space_operations coda_symlink_aops = { | |
54 | .readpage = coda_symlink_filler, | |
55 | }; |