patch-2.1.21 linux/fs/ext/symlink.c

• Lines: 111
• Date: Thu Jan 1 02:00:00 1970
• Orig file: v2.1.20/linux/fs/ext/symlink.c
• Orig date: Tue Oct 29 19:58:42 1996

diff -u --recursive --new-file v2.1.20/linux/fs/ext/symlink.c linux/fs/ext/symlink.c
@@ -1,110 +0,0 @@
-/*
- *  linux/fs/ext/symlink.c
- *
- *  Copyright (C) 1992 Remy Card (card@masi.ibp.fr)
- *
- *  from
- *
- *  linux/fs/minix/symlink.c
- *
- *  Copyright (C) 1991, 1992  Linus Torvalds
- *
- *  ext symlink handling code
- */
-
-#include <asm/uaccess.h>
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/ext_fs.h>
-#include <linux/stat.h>
-
-static int ext_readlink(struct inode *, char *, int);
-static int ext_follow_link(struct inode *, struct inode *, int, int, struct inode **);
-
-/*
- * symlinks can't do much...
- */
-struct inode_operations ext_symlink_inode_operations = {
-	NULL,			/* no file-operations */
-	NULL,			/* create */
-	NULL,			/* lookup */
-	NULL,			/* link */
-	NULL,			/* unlink */
-	NULL,			/* symlink */
-	NULL,			/* mkdir */
-	NULL,			/* rmdir */
-	NULL,			/* mknod */
-	NULL,			/* rename */
-	ext_readlink,		/* readlink */
-	ext_follow_link,	/* follow_link */
-	NULL,			/* readpage */
-	NULL,			/* writepage */
-	NULL,			/* bmap */
-	NULL,			/* truncate */
-	NULL			/* permission */
-};
-
-static int ext_follow_link(struct inode * dir, struct inode * inode,
-	int flag, int mode, struct inode ** res_inode)
-{
-	int error;
-	struct buffer_head * bh;
-
-	*res_inode = NULL;
-	if (!dir) {
-		dir = current->fs->root;
-		dir->i_count++;
-	}
-	if (!inode) {
-		iput(dir);
-		return -ENOENT;
-	}
-	if (!S_ISLNK(inode->i_mode)) {
-		iput(dir);
-		*res_inode = inode;
-		return 0;
-	}
-	if (current->link_count > 5) {
-		iput(dir);
-		iput(inode);
-		return -ELOOP;
-	}
-	if (!(bh = ext_bread(inode, 0, 0))) {
-		iput(inode);
-		iput(dir);
-		return -EIO;
-	}
-	iput(inode);
-	current->link_count++;
-	error = open_namei(bh->b_data,flag,mode,res_inode,dir);
-	current->link_count--;
-	brelse(bh);
-	return error;
-}
-
-static int ext_readlink(struct inode * inode, char * buffer, int buflen)
-{
-	struct buffer_head * bh;
-	int i;
-	char c;
-
-	if (!S_ISLNK(inode->i_mode)) {
-		iput(inode);
-		return -EINVAL;
-	}
-	if (buflen > 1023)
-		buflen = 1023;
-	bh = ext_bread(inode, 0, 0);
-	iput(inode);
-	if (!bh)
-		return 0;
-	i = 0;
-	while (i<buflen && (c = bh->b_data[i])) {
-		i++;
-		put_user(c,buffer++);
-	}
-	brelse(bh);
-	return i;
-}