xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ppoll: use __kernel_timespec

Browse Source 
struct timespec is not y2038 safe.
struct __kernel_timespec is the new y2038 safe structure for all
syscalls that are using struct timespec.
Update ppoll 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_ppoll
Compat : compat_sys_ppoll_time64

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

Native 32 bit : ppoll_time32
Compat : compat_sys_ppoll

Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Deepa Dinamani
2018-09-19 21:41:06 -07:00
committed by Arnd Bergmann
parent 854a6ed568
commit 8bd27a3004
3 changed files with 131 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
include/linux/syscalls.h
View File

@@ -469,7 +469,10 @@ asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
fd_set __user *, struct timespec __user *,
void __user *);
asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
struct timespec __user *, const sigset_t __user *,
struct __kernel_timespec __user *, const sigset_t __user *,
size_t);
asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int,
struct old_timespec32 __user *, const sigset_t __user *,
size_t);
/* fs/signalfd.c */