* [PATCH] ELF: Properly redefine PT_GNU_* in terms of PT_LOOS
@ 2022-02-24 5:40 Kees Cook
0 siblings, 0 replies; only message in thread
From: Kees Cook @ 2022-02-24 5:40 UTC (permalink / raw)
To: Eric Biederman
Cc: Kees Cook, Peter Collingbourne, Catalin Marinas, Dave Martin,
linux-kernel, linux-mm, linux-hardening
The PT_GNU_* program header types are actually offsets from PT_LOOS,
so redefine them as such, reorder them, and add the missing PT_GNU_RELRO.
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
---
include/uapi/linux/elf.h | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index 61bf4774b8f2..6438d55529bf 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -35,10 +35,11 @@ typedef __s64 Elf64_Sxword;
#define PT_HIOS 0x6fffffff /* OS-specific */
#define PT_LOPROC 0x70000000
#define PT_HIPROC 0x7fffffff
-#define PT_GNU_EH_FRAME 0x6474e550
-#define PT_GNU_PROPERTY 0x6474e553
-
+#define PT_GNU_EH_FRAME (PT_LOOS + 0x474e550)
#define PT_GNU_STACK (PT_LOOS + 0x474e551)
+#define PT_GNU_RELRO (PT_LOOS + 0x474e552)
+#define PT_GNU_PROPERTY (PT_LOOS + 0x474e553)
+
/*
* Extended Numbering
--
2.30.2
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