patch-2.4.25 linux-2.4.25/fs/smbfs/symlink.c

• Lines: 91
• Date: 2004-02-18 05:36:31.000000000 -0800
• Orig file: linux-2.4.24/fs/smbfs/symlink.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.24/fs/smbfs/symlink.c linux-2.4.25/fs/smbfs/symlink.c
@@ -0,0 +1,90 @@
+/*
+ *  symlink.c
+ *
+ *  Copyright (C) 2002 by John Newbigin
+ *
+ *  Please add a note about your changes to smbfs in the ChangeLog file.
+ */
+
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/fcntl.h>
+#include <linux/stat.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <linux/smp_lock.h>
+#include <linux/net.h>
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#include <linux/smbno.h>
+#include <linux/smb_fs.h>
+
+#include "smb_debug.h"
+#include "proto.h"
+
+int smb_read_link(struct dentry *dentry, char *buffer, int len)
+{
+	char *link;
+	int result;
+	DEBUG1("read link buffer len = %d\n", len);
+
+	result = -ENOMEM;
+	link = kmalloc(SMB_MAXNAMELEN + 1, GFP_KERNEL);
+	if (!link)
+		goto out;
+
+	result = smb_proc_read_link(server_from_dentry(dentry), dentry, link,
+				    SMB_MAXNAMELEN);
+	if (result < 0)
+		goto out_free;
+	result = vfs_readlink(dentry, buffer, len, link);
+
+out_free:
+	kfree(link);
+out:
+	return result;
+}
+
+int smb_symlink(struct inode *dir, struct dentry *dentry, const char *oldname)
+{
+	DEBUG1("create symlink %s -> %s/%s\n", oldname, DENTRY_PATH(dentry));
+
+	smb_invalid_dir_cache(dir);
+	return smb_proc_symlink(server_from_dentry(dentry), dentry, oldname);
+}
+
+int smb_follow_link(struct dentry *dentry, struct nameidata *nd)
+{
+	char *link;
+	int result;
+
+	DEBUG1("followlink of %s/%s\n", DENTRY_PATH(dentry));
+
+	result = -ENOMEM;
+	link = kmalloc(SMB_MAXNAMELEN + 1, GFP_KERNEL);
+	if (!link)
+		goto out;
+
+	result = smb_proc_read_link(server_from_dentry(dentry), dentry, link,
+				    SMB_MAXNAMELEN);
+	if (result < 0 || result >= SMB_MAXNAMELEN)
+		goto out_free;
+	link[result] = 0;
+
+	result = vfs_follow_link(nd, link);
+
+out_free:
+	kfree(link);
+out:
+	return result;
+}
+
+struct inode_operations smb_link_inode_operations =
+{
+	.readlink	= smb_read_link,
+	.follow_link	= smb_follow_link,
+};