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 "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(inode->i_sb, &cii->c_fid, p, &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 };