fs/coda/symlink.c

   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 <linux/coda_psdev.h>
  21
  22 #include "coda_linux.h"
  23
  24 static int coda_symlink_filler(struct file *file, struct page *page)
  25 {
  26         struct inode *inode = page->mapping->host;
  27         int error;
  28         struct coda_inode_info *cii;
  29         unsigned int len = PAGE_SIZE;
  30         char *p = page_address(page);
  31
  32         cii = ITOC(inode);
  33
  34         error = venus_readlink(inode->i_sb, &cii->c_fid, p, &len);
  35         if (error)
  36                 goto fail;
  37         SetPageUptodate(page);
  38         unlock_page(page);
  39         return 0;
  40
  41 fail:
  42         SetPageError(page);
  43         unlock_page(page);
  44         return error;
  45 }
  46
  47 const struct address_space_operations coda_symlink_aops = {
  48         .readpage       = coda_symlink_filler,
  49 };