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Re: full_read depends on incoming errno
From: |
Paul Eggert |
Subject: |
Re: full_read depends on incoming errno |
Date: |
Thu, 21 Feb 2013 09:20:03 -0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130110 Thunderbird/17.0.2 |
On 02/21/13 09:16, Paolo Bonzini wrote:
> I think usually errno is undefined for return values other than -1
That's true for system calls, but full_read is
different in that it sets errno whenever it returns
a value other than the requested size. That way,
the caller can distinguish a short read due to EOF
from a short read due to I/O error. So Andy's code
should be OK.
- Re: full_read depends on incoming errno, (continued)
- Re: full_read depends on incoming errno, Paul Eggert, 2013/02/19
- Re: full_read depends on incoming errno, Eli Zaretskii, 2013/02/19
- Re: full_read depends on incoming errno, Paul Eggert, 2013/02/19
- Re: full_read depends on incoming errno, Andy Wingo, 2013/02/19
- Re: full_read depends on incoming errno, Eli Zaretskii, 2013/02/20
- Re: full_read depends on incoming errno, Andy Wingo, 2013/02/20
- Re: full_read depends on incoming errno, Eli Zaretskii, 2013/02/20
- Re: full_read depends on incoming errno, Paolo Bonzini, 2013/02/21
- Re: full_read depends on incoming errno, Andy Wingo, 2013/02/21
- Re: full_read depends on incoming errno, Paolo Bonzini, 2013/02/21
- Re: full_read depends on incoming errno,
Paul Eggert <=
- Re: full_read depends on incoming errno, Eli Zaretskii, 2013/02/21
- Re: full_read depends on incoming errno, Paul Eggert, 2013/02/21
- Re: full_read depends on incoming errno, Eli Zaretskii, 2013/02/21