Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame^] | 53 | const struct address_space_operations coda_symlink_aops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | .readpage = coda_symlink_filler, |
| 55 | }; |