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 page *page) 24 { 25 struct inode *inode = page->mapping->host; 26 int error; 27 struct coda_inode_info *cii; 28 unsigned int len = PAGE_SIZE; 29 char *p = page_address(page); 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 SetPageUptodate(page); 37 unlock_page(page); 38 return 0; 39 40 fail: 41 SetPageError(page); 42 unlock_page(page); 43 return error; 44 } 45 46 const struct address_space_operations coda_symlink_aops = { 47 .readpage = coda_symlink_filler, 48 }; 49