LXR linux/fs/coda/symlink.c

   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
  24static 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 = kmap(page);
  31
  32        lock_kernel();
  33        cii = ITOC(inode);
  34
  35        error = venus_readlink(inode->i_sb, &cii->c_fid, p, &len);
  36        unlock_kernel();
  37        if (error)
  38                goto fail;
  39        SetPageUptodate(page);
  40        kunmap(page);
  41        unlock_page(page);
  42        return 0;
  43
  44fail:
  45        SetPageError(page);
  46        kunmap(page);
  47        unlock_page(page);
  48        return error;
  49}
  50
  51const struct address_space_operations coda_symlink_aops = {
  52        .readpage       = coda_symlink_filler,
  53};
  54