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From: | Paul Eggert |
Subject: | Re: fdopendir closes the file descriptor on MinGW |
Date: | Wed, 18 Mar 2015 13:19:46 -0700 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 |
On 03/18/2015 01:04 PM, Eli Zaretskii wrote:
In this case, "work" means make that file descriptor become valid again. IOW, it should emulate what happens on Posix systems when opendir is called: a new file descriptor is allocated.
Many POSIX systems do that, but POSIX doesn't require it and that's why POSIX lets dirfd return -1 and set errno=ENOTSUP. For example, a POSIX opendir implementation can read the entire directory into RAM and close the file descriptor before returning (not that I'd recommend this for large directories....).
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