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authorDeepa Dinamani <deepa.kernel@gmail.com>2018-09-19 21:41:05 -0700
committerArnd Bergmann <arnd@arndb.de>2018-12-06 17:22:53 +0100
commit854a6ed56839a40f6b5d02a2962f48841482eec4 (patch)
treeffe7666e31be2add4dfe7a8e4eadfbe015f94621 /fs/aio.c
parentded653ccbec0335a78fa7a7aff3ec9870349fafb (diff)
downloadlinux-stericsson-854a6ed56839a40f6b5d02a2962f48841482eec4.tar.gz
signal: Add restore_user_sigmask()
Refactor the logic to restore the sigmask before the syscall returns into an api. This is useful for versions of syscalls that pass in the sigmask and expect the current->sigmask to be changed during the execution and restored after the execution of the syscall. With the advent of new y2038 syscalls in the subsequent patches, we add two more new versions of the syscalls (for pselect, ppoll and io_pgetevents) in addition to the existing native and compat versions. Adding such an api reduces the logic that would need to be replicated otherwise. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'fs/aio.c')
-rw-r--r--fs/aio.c29
1 files changed, 6 insertions, 23 deletions
diff --git a/fs/aio.c b/fs/aio.c
index 6ddb63ee8eb6..39a1f2df6805 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -2110,18 +2110,9 @@ SYSCALL_DEFINE6(io_pgetevents,
return ret;
ret = do_io_getevents(ctx_id, min_nr, nr, events, timeout ? &ts : NULL);
- if (signal_pending(current)) {
- if (ksig.sigmask) {
- current->saved_sigmask = sigsaved;
- set_restore_sigmask();
- }
-
- if (!ret)
- ret = -ERESTARTNOHAND;
- } else {
- if (ksig.sigmask)
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
- }
+ restore_user_sigmask(ksig.sigmask, &sigsaved);
+ if (signal_pending(current) && !ret)
+ ret = -ERESTARTNOHAND;
return ret;
}
@@ -2175,17 +2166,9 @@ COMPAT_SYSCALL_DEFINE6(io_pgetevents,
return ret;
ret = do_io_getevents(ctx_id, min_nr, nr, events, timeout ? &t : NULL);
- if (signal_pending(current)) {
- if (ksig.sigmask) {
- current->saved_sigmask = sigsaved;
- set_restore_sigmask();
- }
- if (!ret)
- ret = -ERESTARTNOHAND;
- } else {
- if (ksig.sigmask)
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
- }
+ restore_user_sigmask(ksig.sigmask, &sigsaved);
+ if (signal_pending(current) && !ret)
+ ret = -ERESTARTNOHAND;
return ret;
}