diff options
author | Anton Blanchard <anton@samba.org> | 2009-02-22 01:50:07 (GMT) |
---|---|---|
committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-02-23 04:53:21 (GMT) |
commit | 501cb16d3cfdcca99ac26fe122079f2a43b046b8 (patch) | |
tree | 90feee70ffa3e15857908f842e5764649141270b /arch/powerpc/kernel/process.c | |
parent | 002b0ec73dd8b784004e5a013ad9f2fa6274af5a (diff) | |
download | linux-fsl-qoriq-501cb16d3cfdcca99ac26fe122079f2a43b046b8.tar.xz |
powerpc: Randomise PIEs
Randomise ELF_ET_DYN_BASE, which is used when loading position independent
executables.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/process.c')
-rw-r--r-- | arch/powerpc/kernel/process.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 30b149c..eac0649 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1170,3 +1170,13 @@ unsigned long arch_randomize_brk(struct mm_struct *mm) return ret; } + +unsigned long randomize_et_dyn(unsigned long base) +{ + unsigned long ret = PAGE_ALIGN(base + brk_rnd()); + + if (ret < base) + return base; + + return ret; +} |