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 page *page = &folio->page; 26 struct inode *inode = folio->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 .read_folio = coda_symlink_filler, 49 }; 50