In order to allow the COMPAT_SYSCALL_DEFINE macro generate code that
performs proper zero and sign extension convert all 64 bit parameters
to their corresponding 32 bit compat counterparts.
Signed-off-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
---
include/linux/compat.h | 6 +++---
include/linux/kexec.h | 6 ------
kernel/kexec.c | 8 ++++----
3 files changed, 7 insertions(+), 13 deletions(-)
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 8e636211f334..ef4834c5bcab 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -641,10 +641,10 @@ asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
u32 val3);
asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
char __user *optval, int __user *optlen);
-asmlinkage long compat_sys_kexec_load(unsigned long entry,
- unsigned long nr_segments,
+asmlinkage long compat_sys_kexec_load(compat_ulong_t entry,
+ compat_ulong_t nr_segments,
struct compat_kexec_segment __user *,
- unsigned long flags);
+ compat_ulong_t flags);
asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
const struct compat_mq_attr __user *u_mqstat,
struct compat_mq_attr __user *u_omqstat);
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 6d4066cdb5b5..a75641930049 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -127,12 +127,6 @@ extern asmlinkage long sys_kexec_load(unsigned long entry,
struct kexec_segment __user *segments,
unsigned long flags);
extern int kernel_kexec(void);
-#ifdef CONFIG_COMPAT
-extern asmlinkage long compat_sys_kexec_load(unsigned long entry,
- unsigned long nr_segments,
- struct compat_kexec_segment __user *segments,
- unsigned long flags);
-#endif
extern struct page *kimage_alloc_control_pages(struct kimage *image,
unsigned int order);
extern void crash_kexec(struct pt_regs *);
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 60bafbed06ab..45601cf41bee 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1039,10 +1039,10 @@ void __weak crash_unmap_reserved_pages(void)
{}
#ifdef CONFIG_COMPAT
-asmlinkage long compat_sys_kexec_load(unsigned long entry,
- unsigned long nr_segments,
- struct compat_kexec_segment __user *segments,
- unsigned long flags)
+COMPAT_SYSCALL_DEFINE4(kexec_load, compat_ulong_t, entry,
+ compat_ulong_t, nr_segments,
+ struct compat_kexec_segment __user *, segments,
+ compat_ulong_t, flags)
{
struct compat_kexec_segment in;
struct kexec_segment out, __user *ksegments;
--
1.8.4.5
--
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