diff options
Diffstat (limited to 'lib/csu/boot.h')
| -rw-r--r-- | lib/csu/boot.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/lib/csu/boot.h b/lib/csu/boot.h index c899af9303b..6ec5256bb06 100644 --- a/lib/csu/boot.h +++ b/lib/csu/boot.h @@ -1,4 +1,4 @@ -/* $OpenBSD: boot.h,v 1.29 2018/11/22 21:37:29 guenther Exp $ */ +/* $OpenBSD: boot.h,v 1.30 2019/05/10 13:29:21 guenther Exp $ */ /* * Copyright (c) 1998 Per Fogelstrom, Opsycon AB @@ -81,6 +81,14 @@ struct boot_dyn { #endif }; +static void *relro_addr; +static size_t relro_size; +#define RCRT0_RELRO() \ + do { \ + if (relro_addr != NULL && relro_size != 0) \ + mprotect(relro_addr, relro_size, PROT_READ); \ + } while (0) + /* * Local decls. */ @@ -220,8 +228,8 @@ _dl_boot_bind(const long sp, long *dl_data, Elf_Dyn *dynamicp) break; #endif case PT_GNU_RELRO: - mprotect((void *)(phdp->p_vaddr + loff), phdp->p_memsz, - PROT_READ); + relro_addr = (void *)(phdp->p_vaddr + loff); + relro_size = phdp->p_memsz; /* * GNU_RELRO (a) covers the GOT, and (b) comes after * all LOAD sections, so if we found it then we're done |