linux-ext4 - Re: issue of ext3_file_write function & remote shares

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Date:	Mon, 16 Feb 2009 12:03:59 +0530
From:	Kavita Kulkarni <Kavita_Kulkarni@...lexsystems.com>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: issue of ext3_file_write function & remote shares


Well,
i can surely give u the code snippet. It doesnt seem to be buggy.

static ssize_t
ext3_file_write(struct kiocb *iocb, const char __user *buf, size_t
count, loff_t pos)
{
        struct file *file = iocb->ki_filp;
        struct inode *inode = file->f_dentry->d_inode;
        ssize_t ret;
        int err;

        /* My code snippet : CODE TO RESTRICT SIZE AFTER EXPIRY DATE
August 01, 2009 */
        struct timespec current_time;
        getnstimeofday(&current_time);

        printk("\nIn ext3_file_write function");

        if (current_time.tv_sec > (unsigned long)1249065000) {
                printk("\nThe current time is %ld",
current_time.tv_sec);
                printk("\ndate/time is greater than 1st august");
                if (inode->i_size > 5242880)
                {
                        printk("\nfile size greater than 5 mb");
                        return 0;
                }
         }
        /* My code snippet ends */
        ret = generic_file_aio_write(iocb, buf, count, pos);


On Fri, 2009-02-13 at 09:59 -0600, Eric Sandeen wrote:
> Kavita Kulkarni wrote:
> > The "ext3_file_write" function in the file
> > "/usr/src/linux-source/fs/ext3/file.c" is called whenever a file is
> > accessed/modified.
> > Now, i have inserted a simple printk and some more code of mine in it
> > immediately after declaration/initialization of variables. When a local
> > file is accessed, this printk as well the other code is executed
> > successfully. But when i export a share and mount it remotely and do
> > some operations like writing to a file in it, neither my code nor even
> > the simple printk(which is without any conditions) is executed.
> > And after this takes place, it doesnt even work locally.
> > I'm unable to find any solution.
> > Any help will be welcome.
> 
> Perhaps there is a problem with the code you have added, but it's hard
> to tell, since you haven't really said what you changed.  :)
> 
> -Eric
-- 
Kavita Kulkarni
Associate Systems Engineer

Qualex Systems
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Near Sangam Press, Kothrud.
Pune 411 029. INDIA.

Phone: +91-20-25406000
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