Date: Mon, 16 Dec 2002 11:24:43 -0800 (PST) From: Matt Dillon <dillon@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/vm vm.h src/sys/kern imgact_elf.c src/libexec/rtld-elf map_object.c Message-ID: <200212161924.gBGJOhSb048310@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
dillon 2002/12/16 11:24:43 PST
Modified files:
sys/vm vm.h
sys/kern imgact_elf.c
libexec/rtld-elf map_object.c
Log:
Change the way ELF coredumps are handled. Instead of unconditionally
skipping read-only pages, which can result in valuable non-text-related
data not getting dumped, the ELF loader and the dynamic loader now mark
read-only text pages NOCORE and the coredump code only checks (primarily) for
complete inaccessibility of the page or NOCORE being set.
Certain applications which map large amounts of read-only data will
produce much larger cores. A new sysctl has been added,
debug.elf_legacy_coredump, which will revert to the old behavior.
This commit represents collaborative work by all parties involved.
The PR contains a program demonstrating the problem.
PR: kern/45994
Submitted by: "Peter Edwards" <pmedwards@eircom.net>, Archie Cobbs <archie@dellroad.org>
Reviewed by: jdp, dillon
MFC after: 7 days
Revision Changes Path
1.10 +23 -6 src/libexec/rtld-elf/map_object.c
1.133 +31 -11 src/sys/kern/imgact_elf.c
1.22 +1 -0 src/sys/vm/vm.h
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200212161924.gBGJOhSb048310>