io_pgetevents: use __kernel_timespec

struct timespec is not y2038 safe.
struct __kernel_timespec is the new y2038 safe structure for all
syscalls that are using struct timespec.
Update io_pgetevents interfaces to use struct __kernel_timespec.

sigset_t also has different representations on 32 bit and 64 bit
architectures. Hence, we need to support the following different
syscalls:

New y2038 safe syscalls:
(Controlled by CONFIG_64BIT_TIME for 32 bit ABIs)

Native 64 bit(unchanged) and native 32 bit : sys_io_pgetevents
Compat : compat_sys_io_pgetevents_time64

Older y2038 unsafe syscalls:
(Controlled by CONFIG_32BIT_COMPAT_TIME for 32 bit ABIs)

Native 32 bit : sys_io_pgetevents_time32
Compat : compat_sys_io_pgetevents

Note that io_getevents syscalls do not have a y2038 safe solution.

Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 8 insertions, 2 deletions

diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 934e58e0dfa4..a27cf407de92 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -296,12 +296,18 @@ asmlinkage long sys_io_getevents(aio_context_t ctx_id,
                                 long min_nr,
                                 long nr,
                                 struct io_event __user *events,
-                                struct timespec __user *timeout);
+                                struct __kernel_timespec __user *timeout);
 asmlinkage long sys_io_pgetevents(aio_context_t ctx_id,
                                 long min_nr,
                                 long nr,
                                 struct io_event __user *events,
-                                struct timespec __user *timeout,
+                                struct __kernel_timespec __user *timeout,
+                                const struct __aio_sigset *sig);
+asmlinkage long sys_io_pgetevents_time32(aio_context_t ctx_id,
+                                long min_nr,
+                                long nr,
+                                struct io_event __user *events,
+                                struct old_timespec32 __user *timeout,
                                 const struct __aio_sigset *sig);
 
 /* fs/xattr.c */