Re: Anybody out there? (ETXTBSY)

H. Peter Anvin (hpa@transmeta.com)
29 Aug 1998 00:54:30 GMT

Followup to: <yttzpcp9ic3.fsf@krilin.dc.fi.udc.es>
By author: "Juan J. Quintela" <quintela@krilin.dc.fi.udc.es>
In newsgroup: linux.dev.kernel
>
> Hi,
>
> From the man page of rename:
>
> int rename(const char *oldpath, const char *newpath);
>
> .....
> If newpath already exists it will be atomically overwrit­
> ^^^^^^^^
> ten (subject to a few conditions - see ERRORS below), so
> ^^^
> that there is no point at which another process attempting
> to access newpath will find it missing.
>
> You don't want to overwrite the existing libc.so or your running
> binaries running against it will stop work in that moment.
>
> Cheers, Juan.
>

This is a man page bug; it doesn't actually overwrite (it unlinks the
old file). I didn't realize rename() did this, but this is a Good
Thing[TM].

-hpa

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