diff options
author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2011-01-12 03:55:31 -0500 |
---|---|---|
committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-01-12 03:55:25 -0500 |
commit | d2c9dfccbc3a449b9677772e7496e2656049d9f3 (patch) | |
tree | f62cf27ddee310af28244bcfbc8eb2e197ed629c /arch/s390/kernel/process.c | |
parent | 3351918282fd664e918a3175ddfae9b15656122e (diff) |
[S390] Randomize PIEs
Randomize ELF_ET_DYN_BASE, which is used when loading position
independent executables.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/process.c')
-rw-r--r-- | arch/s390/kernel/process.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 26d48fe72999..a895e69379f7 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c | |||
@@ -359,3 +359,14 @@ unsigned long arch_randomize_brk(struct mm_struct *mm) | |||
359 | return mm->brk; | 359 | return mm->brk; |
360 | return ret; | 360 | return ret; |
361 | } | 361 | } |
362 | |||
363 | unsigned long randomize_et_dyn(unsigned long base) | ||
364 | { | ||
365 | unsigned long ret = PAGE_ALIGN(base + brk_rnd()); | ||
366 | |||
367 | if (!(current->flags & PF_RANDOMIZE)) | ||
368 | return base; | ||
369 | if (ret < base) | ||
370 | return base; | ||
371 | return ret; | ||
372 | } | ||