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Re: 0-bytes read() blocks for standard fd's while it shouldn't
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From: |
Samuel Thibault |
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Subject: |
Re: 0-bytes read() blocks for standard fd's while it shouldn't |
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Date: |
Tue, 27 Dec 2011 16:57:19 +0100 |
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User-agent: |
Mutt/1.5.21+34 (58baf7c9f32f) (2010-12-30) |
Pino Toscano, le Mon 26 Dec 2011 01:25:02 +0100, a écrit :
> while debugging, I discovered a problem a bug in read(): when called
> with nbyte = 0 for the fd's of stdin/out/err like:
> ret = read(0, buf, 0);
> it blocks as if it would wait for data, while it should return 0 in
> absence of errors. That read() correctly returns 0 for an fd a regular
> file.
>
> I didn't have much success in locating who is replying to the io_read
> for those fd's, so for now I'll just report the issue.
I have pushed a fix.
Samuel