Commit 1bbfc848 authored Mar 21, 2011 by Artem Bityutskiy

UBIFS: make debugfs files non-seekable



Turn the debufs files UBIFS maintains into non-seekable. Indeed, none
of them is supposed to be seek'ed.

Do this by making the '.lseek()' handler to be 'no_llseek()' and by
using 'nonseekable_open()' in the '.open()' operation.

This does mean an API break but this debugging API is only used by a couple
of test scripts which do not rely in the 'llseek()' operation.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

parent 693d92a1

fs/ubifs/debug.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -2784,7 +2784,7 @@ void dbg_debugfs_exit(void)
		static int open_debugfs_file(struct inode inode, struct file file)
		{
		file->private_data = inode->i_private;
		return 0;
		return nonseekable_open(inode, file);
		}

		static ssize_t write_debugfs_file(struct file file, const char __user buf,
		@@ -2814,7 +2814,7 @@ static const struct file_operations dfs_fops = {
		.open = open_debugfs_file,
		.write = write_debugfs_file,
		.owner = THIS_MODULE,
		.llseek = default_llseek,
		.llseek = no_llseek,
		};

		/**