1 files changed, 78 insertions, 0 deletions

diff --git a/fs/affs/symlink.c b/fs/affs/symlink.c
new file mode 100644
index 000000000000..426f0f094f23
--- /dev/null
+++ b/fs/affs/symlink.c
@@ -0,0 +1,78 @@
+/*
+ *  linux/fs/affs/symlink.c
+ *
+ *  1995  Hans-Joachim Widmaier - Modified for affs.
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ *
+ *  affs symlink handling code
+ */
+
+#include "affs.h"
+
+static int affs_symlink_readpage(struct file *file, struct page *page)
+{
+        struct buffer_head *bh;
+        struct inode *inode = page->mapping->host;
+        char *link = kmap(page);
+        struct slink_front *lf;
+        int err;
+        int                      i, j;
+        char                     c;
+        char                     lc;
+        char                    *pf;
+
+        pr_debug("AFFS: follow_link(ino=%lu)\n",inode->i_ino);
+
+        err = -EIO;
+        bh = affs_bread(inode->i_sb, inode->i_ino);
+        if (!bh)
+                goto fail;
+        i  = 0;
+        j  = 0;
+        lf = (struct slink_front *)bh->b_data;
+        lc = 0;
+        pf = AFFS_SB(inode->i_sb)->s_prefix ? AFFS_SB(inode->i_sb)->s_prefix : "/";
+
+        if (strchr(lf->symname,':')) {  /* Handle assign or volume name */
+                while (i < 1023 && (c = pf[i]))
+                        link[i++] = c;
+                while (i < 1023 && lf->symname[j] != ':')
+                        link[i++] = lf->symname[j++];
+                if (i < 1023)
+                        link[i++] = '/';
+                j++;
+                lc = '/';
+        }
+        while (i < 1023 && (c = lf->symname[j])) {
+                if (c == '/' && lc == '/' && i < 1020) {        /* parent dir */
+                        link[i++] = '.';
+                        link[i++] = '.';
+                }
+                link[i++] = c;
+                lc = c;
+                j++;
+        }
+        link[i] = '\0';
+        affs_brelse(bh);
+        SetPageUptodate(page);
+        kunmap(page);
+        unlock_page(page);
+        return 0;
+fail:
+        SetPageError(page);
+        kunmap(page);
+        unlock_page(page);
+        return err;
+}
+
+struct address_space_operations affs_symlink_aops = {
+        .readpage       = affs_symlink_readpage,
+};
+
+struct inode_operations affs_symlink_inode_operations = {
+        .readlink       = generic_readlink,
+        .follow_link    = page_follow_link_light,
+        .put_link       = page_put_link,
+        .setattr        = affs_notify_change,
+};