Re: [PATCH 3/3] virCommand: use procfs to learn opened FDs

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



* Eric Blake:

> On 7/14/19 12:23 AM, Florian Weimer wrote:
>> * Eric Blake:
>> 
>>> Does anyone know if glibc guarantees that opendir/readdir in between
>>> multi-threaded fork() and exec() is safe, even though POSIX does not
>>> guarantee that safety in general?
>> 
>> glibc supports malloc after multi-threaded fork as an extension (or as
>> a bug, because it makes malloc not async-signal-safe).
>
> It's not a bug for glibc to provide guarantees above what POSIX
> requires, but IS a bug for applications to depend on those guarantees
> without realizing they are non-portable.

It's a bug because it makes malloc not async-signal-safe (as required by
POSIX) in our current implementation of malloc.

--
libvir-list mailing list
libvir-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/libvir-list



[Index of Archives]     [Virt Tools]     [Libvirt Users]     [Lib OS Info]     [Fedora Users]     [Fedora Desktop]     [Fedora SELinux]     [Big List of Linux Books]     [Yosemite News]     [KDE Users]     [Fedora Tools]

  Powered by Linux