Add identifiers for the new "mutable bss" section, ".openbsd.mutable" is

0x65a3dbe5.  Also add PF_MUTABLE as a segment flag for later use.

diff --git a/sys/sys/exec_elf.h b/sys/sys/exec_elf.h
index 8083ae3..a7ab8ad 100644 (file)
--- a/sys/sys/exec_elf.h
+++ b/sys/sys/exec_elf.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: exec_elf.h,v 1.94 2021/12/25 01:25:51 guenther Exp $  */
+/*     $OpenBSD: exec_elf.h,v 1.95 2022/10/07 03:20:58 deraadt Exp $   */
 /*
  * Copyright (c) 1995, 1996 Erik Theisen.  All rights reserved.
  *
@@ -305,6 +305,7 @@ typedef struct {
 #define ELF_SYMTAB      ".symtab"      /* symbol table */
 #define ELF_TEXT        ".text"                /* code */
 #define ELF_OPENBSDRANDOMDATA ".openbsd.randomdata" /* constant randomdata */
+#define ELF_OPENBSDMUTABLE ".openbsd.mutable" /* mutable bss */
 
 
 /* Section Attribute Flags - sh_flags */
@@ -476,6 +477,7 @@ typedef struct {
 #define PT_GNU_EH_FRAME                0x6474e550      /* Exception handling info */
 #define PT_GNU_RELRO           0x6474e552      /* Read-only after relocation */
 
+#define PT_OPENBSD_MUTABLE     0x65a3dbe5      /* like bss, but not immutable */
 #define PT_OPENBSD_RANDOMIZE   0x65a3dbe6      /* fill with random data */
 #define PT_OPENBSD_WXNEEDED    0x65a3dbe7      /* program performs W^X violations */
 #define PT_OPENBSD_BOOTDATA    0x65a41be6      /* section for boot arguments */
@@ -484,6 +486,7 @@ typedef struct {
 #define PF_X           0x1             /* Executable */
 #define PF_W           0x2             /* Writable */
 #define PF_R           0x4             /* Readable */
+#define PF_MUTABLE     0x08000000      /* Mutable */
 #define PF_MASKPROC    0xf0000000      /* reserved bits for processor */
                                        /*  specific segment flags */