Seeing 'Short read' error in Samba-plugin's pwrite() while reading data from socket data.

[Volker Lendecke]

On Mon, May 12, 2014 at 11:56:59PM +0530, sandeep nag wrote:
> I am seeing 'Short read' errors in pwrite() call of our Samba-VFS plugin
> while reading data from socket data. Please suggest me the function to
> debug in samba code and tell me, what could be the possible reasons for
> 'Short read' errors and how can it be fixed.
> 
> 
>  bytes_read = 0;
>     while(bytes_read != n)
>     {
>         read_ret = read(wd->u.rfd, buf + bytes_read, n - bytes_read);
>         if (read_ret == 0)
>         {
>             read_ret = -1;
>             CIFS_NOTICE("%s: Short read from socket, n %ld, bytes_read
> %ld,"    <==== This error is seen in  logs.
>                         " errno %d", __FUNCTION__, n, bytes_read, errno);

As Jeremy said: On a nonblocking socket it just means the
buffer is empty. On a blocking socket, the other end has
closed it.

With best regrads,

Volker Lendecke

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