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Netout: write returned 0?

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# 1  
Old 03-21-2013
Netout: write returned 0?
Hi Am Using unix Aix
When i ftp the zero size file getting the netout: write returned 0?
Quote:
My question was why its getting the alerts netout: write returned 0? ftp zero size file
what is netout means in unix ?

Can anybody tell me ?

Thanks in advance

# 2  
Old 03-21-2013
From man 2 write:

Code:
RETURN VALUE
       On  success,  the  number  of bytes written is returned (zero indicates
       nothing was written).  On error, -1  is  returned,  and  errno  is  set
       appropriately.

       If  count  is  zero  and  fd refers to a regular file, then write() may
       return a failure status if one of the errors below is detected.  If  no
       errors  are  detected,  0  will  be  returned without causing any other
       effect.  If count is zero and fd refers to a file other than a  regular
       file, the results are not specified.

So FTP is assuming the 0 is because of an error, but it's actually because the file is supposed to be empty -- it must have blindly done a write(fd, ... 0); instead of just not writing.

So it's not an error.
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