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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>
This commit is contained in:
Artem Bityutskiy 2011-03-21 16:26:42 +02:00
parent 693d92a1bb
commit 1bbfc848a9
1 changed files with 2 additions and 2 deletions
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4
fs/ubifs/debug.c
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@ -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,
};
/**