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/sched.h>
13 #include <linux/fs.h>
14 #include <linux/stat.h>
15 #include <linux/errno.h>
16 #include <linux/locks.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 *cnp;
30 unsigned int len = PAGE_SIZE;
31 char *p = kmap(page);
32
33 lock_kernel();
34 cnp = ITOC(inode);
35 coda_vfs_stat.follow_link++;
36
37 error = venus_readlink(inode->i_sb, &(cnp->c_fid), p, &len);
38 unlock_kernel();
39 if (error)
40 goto fail;
41 SetPageUptodate(page);
42 kunmap(page);
43 UnlockPage(page);
44 return 0;
45
46 fail:
47 SetPageError(page);
48 kunmap(page);
49 UnlockPage(page);
50 return error;
51 }
52
53 struct address_space_operations coda_symlink_aops = {
54 readpage: coda_symlink_filler
55 };
56
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