linux-kernel - [PATCH 2/2] Make the EF_AS_NO_RANDOM e_flag bit disable PF

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Date:	Tue, 23 Jan 2007 23:31:12 +0300
From:	Samium Gromoff <_deepfire@...lingofgreen.ru>
To:	Alan <alan@...rguk.ukuu.org.uk>
Cc:	Samium Gromoff <_deepfire@...lingofgreen.ru>,
	Pavel Machek <pavel@....cz>, Valdis.Kletnieks@...edu,
	David Wagner <daw@...berkeley.edu>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] Make the EF_AS_NO_RANDOM e_flag bit disable PF_RANDOMIZE

Author: Samium Gromoff <deepfire@...elheise.deep.net>
Date:   Tue Jan 23 23:12:16 2007 +0300

    load_elf_binary: do not set PF_RANDOMIZE if the ELF file has EF_AS_NO_RANDOM s
et

diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 7cb2872..007dedd 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -780,7 +780,8 @@ static int load_elf_binary(struct linux_binprm *bprm, struct p
t_regs *regs)
        if (elf_read_implies_exec(loc->elf_ex, executable_stack))
                current->personality |= READ_IMPLIES_EXEC;
 
-       if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
+       if (!(current->personality & ADDR_NO_RANDOMIZE) &&
+           !(loc->elf_ex.e_flags & EF_AS_NO_RANDOM) && randomize_va_space)
                current->flags |= PF_RANDOMIZE;
        arch_pick_mmap_layout(current->mm);
-
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