| 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(sb: inode->i_sb, fid: &cii->c_fid, buffer: p, length: &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 | }; |
| 49 |