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Bug #1992

closed

Add 7 more auxinfo types to support RTLD upgrade

Added by dragonflybsd1 almost 14 years ago. Updated over 13 years ago.

Status:
Closed
Priority:
Low
Assignee:
swildner
Category:
-
Target version:
-
Start date:
Due date:
% Done:

0%

Estimated time:

Description

I submitted a substantial upgrade to rtld-elf (140k patch) to Sascha
last week which adds functions like dl_iterate_phdr, dlvsym, and
ktraces. With the exception of libmap functionality, that patch will
bring up Dragonfly's RTLD to about level with cerca 2007 FreeBSD.
Sascha intends to commit the patch this weekend.

There's been a lot of neat additions added to FreeBSD's rtld in the last
two years, and I've already made significant progress on a second
rtld-elf upgrade. My goal is that this second patch submission will
bring DragonFly's rtld-elf on par with FreeBSD's rtld-elf as it stands
today.

The new code is using auxinfo elements that don't currently exist on
DragonFly. The attached patch will add the following Auxinfo types:

15 EXECPATH
16 CANARY
17 CANARYLEN
18 OSRELDATE
19 NCPUS
20 PAGESIZES
21 PAGESIZESLEN

(FreeBSD also defines 23 STACKPROT which I've ignored for now)

Please review the following patch that adds these auxinfo types and a
new sysctl and incorporate if deemed error-free so I may continue with
my rtld-elf upgrade project.

Regards,

John

Files

auxinfo.patch (10.5 KB) auxinfo.patch dragonflybsd1, 02/17/2011 07:58 PM
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