search for: get_random

...ntic much better. > > I might not still understand the expected usecase but if the target > > application has to be changed anyway then why not simply use a > > transparent and proper signaling mechanism like poll on a fd. That > > The goal is to have cryprographically-safe get_random_number() with 0 > syscalls. > > You'd need to do: > > if (!poll(did_i_migrate)) { > use_prng_seed(); > if (poll(did_i_migrate)) { > /* oops_they_migrated_me_in_middle_of_computation, > lets_redo_it() */ > goto retry: >...

...ntic much better. > > I might not still understand the expected usecase but if the target > > application has to be changed anyway then why not simply use a > > transparent and proper signaling mechanism like poll on a fd. That > > The goal is to have cryprographically-safe get_random_number() with 0 > syscalls. > > You'd need to do: > > if (!poll(did_i_migrate)) { > use_prng_seed(); > if (poll(did_i_migrate)) { > /* oops_they_migrated_me_in_middle_of_computation, > lets_redo_it() */ > goto retry: >...

On Tue 2020-07-07 12:00:41, Colm MacCarthaigh wrote: > > > On 7 Jul 2020, at 9:37, Pavel Machek wrote: > > Please go through the thread and try to understand it. > > > > You'd need syscalls per get_randomness(), not per migration. > > I think one check per get_randomness() is sufficient, though putting it at > the end of the critical section rather than the beginning helps. Yeah, well, one syscall is still enough to make it useless. Best regards, Pavel -- (english) http://www.l...

...--- a/utils/isohybrid.in +++ b/utils/isohybrid.in @@ -100,6 +100,13 @@ if ($c > 1024) { $cc = $c; } +# Preserve id when run again +seek(FILE, 440, SEEK_SET) or die "$0: $file: $!\n"; +read(FILE, $id, 4); +if ($id eq "\x00\x00\x00\x00") { + $id = pack("V", get_random()); +} + # Print the MBR and partition table seek(FILE, 0, SEEK_SET) or die "$0: $file: $!\n"; @@ -117,12 +124,7 @@ if ( length($mbr) > 432 ) { $mbr .= "\0" x (432 - length($mbr)); $mbr .= pack("VV", $de_lba*4, 0); # Offset 432: LBA of isolinux.bin -if (defi...

What does the method query_all_workers() do? There is no documentation on what this method returns (1.0.1 version). Orion -------------- next part -------------- An HTML attachment was scrubbed... URL: http://rubyforge.org/pipermail/backgroundrb-devel/attachments/20080118/9f9b8112/attachment.html

Op 2014-06-20 om 15:56 schreef Ady: > > The Perl variant, isohybrid.in, seems to be getting left behind > regarding several patches. I don't recall whether there is at least > some mention in the isohybrid docs about the existence of 2 variants > included in Syslinux (and that is in addition to other isohybrid > methods outside Syslinux). Is there any reference? >

> Thanks all point about security, I''ll do as follows. > I thought that the point was the following two. > > > 1. Storage place of encrypted password > Should I store it in /etc/xen/passwd ? > Or, should I wait for DB of Xen that will be released in > the future? The xend life cycle management patches were posted by Alistair a couple of months back.