diff options
| author | dillon <dillon@FreeBSD.org> | 2002-12-16 19:24:43 +0000 |
|---|---|---|
| committer | dillon <dillon@FreeBSD.org> | 2002-12-16 19:24:43 +0000 |
| commit | be3db49c80fb516ad39e2306c2dd94eb57f1fe16 (patch) | |
| tree | 62395793dfc1ca744a98bca2261e363d7c975367 /sys/vm/vm.h | |
| parent | 1696b05046d85a2bd2206eddc6e04c79ac567c2b (diff) | |
| download | FreeBSD-src-be3db49c80fb516ad39e2306c2dd94eb57f1fe16.zip FreeBSD-src-be3db49c80fb516ad39e2306c2dd94eb57f1fe16.tar.gz | |
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
Diffstat (limited to 'sys/vm/vm.h')
| -rw-r--r-- | sys/vm/vm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/vm/vm.h b/sys/vm/vm.h index ffbcd48..55818ef 100644 --- a/sys/vm/vm.h +++ b/sys/vm/vm.h @@ -81,6 +81,7 @@ typedef u_char vm_prot_t; /* protection codes */ #define VM_PROT_OVERRIDE_WRITE ((vm_prot_t) 0x08) /* copy-on-write */ #define VM_PROT_ALL (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE) +#define VM_PROT_RW (VM_PROT_READ|VM_PROT_WRITE) #define VM_PROT_DEFAULT VM_PROT_ALL union vm_map_object; |
