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authorJiri Kosina <jkosina@suse.cz>2008-01-30 07:31:07 -0500
committerIngo Molnar <mingo@elte.hu>2008-01-30 07:31:07 -0500
commitcc503c1b43e002e3f1fed70f46d947e2bf349bb6 (patch)
treedf0d77b7bccf0148c7b7cdd0363354499b259f99 /arch/ia64
parent82f74e7159749cc511ebf5954a7b9ea6ad634949 (diff)
x86: PIE executable randomization
main executable of (specially compiled/linked -pie/-fpie) ET_DYN binaries onto a random address (in cases in which mmap() is allowed to perform a randomization). The code has been extraced from Ingo's exec-shield patch http://people.redhat.com/mingo/exec-shield/ [akpm@linux-foundation.org: fix used-uninitialsied warning] [kamezawa.hiroyu@jp.fujitsu.com: fixed ia32 ELF on x86_64 handling] Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Roland McGrath <roland@redhat.com> Cc: Jakub Jelinek <jakub@redhat.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/ia32/binfmt_elf32.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/ia64/ia32/binfmt_elf32.c b/arch/ia64/ia32/binfmt_elf32.c
index 3e35987af458..2a662215359c 100644
--- a/arch/ia64/ia32/binfmt_elf32.c
+++ b/arch/ia64/ia32/binfmt_elf32.c
@@ -222,7 +222,7 @@ elf32_set_personality (void)
222} 222}
223 223
224static unsigned long 224static unsigned long
225elf32_map (struct file *filep, unsigned long addr, struct elf_phdr *eppnt, int prot, int type) 225elf32_map (struct file *filep, unsigned long addr, struct elf_phdr *eppnt, int prot, int type, unsigned long unused)
226{ 226{
227 unsigned long pgoff = (eppnt->p_vaddr) & ~IA32_PAGE_MASK; 227 unsigned long pgoff = (eppnt->p_vaddr) & ~IA32_PAGE_MASK;
228 228