get_compat_sigset()

similar to put_compat_sigset()

Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2017-09-03 21:45:17 -04:00
commit 3968cf6238
8 changed files with 28 additions and 51 deletions

View file

@ -1301,7 +1301,6 @@ static long do_compat_pselect(int n, compat_ulong_t __user *inp,
struct compat_timespec __user *tsp, compat_sigset_t __user *sigmask,
compat_size_t sigsetsize)
{
compat_sigset_t ss32;
sigset_t ksigmask, sigsaved;
struct timespec64 ts, end_time, *to = NULL;
int ret;
@ -1318,9 +1317,8 @@ static long do_compat_pselect(int n, compat_ulong_t __user *inp,
if (sigmask) {
if (sigsetsize != sizeof(compat_sigset_t))
return -EINVAL;
if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
if (get_compat_sigset(&ksigmask, sigmask))
return -EFAULT;
sigset_from_compat(&ksigmask, &ss32);
sigdelsetmask(&ksigmask, sigmask(SIGKILL)|sigmask(SIGSTOP));
sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
@ -1369,7 +1367,6 @@ COMPAT_SYSCALL_DEFINE5(ppoll, struct pollfd __user *, ufds,
unsigned int, nfds, struct compat_timespec __user *, tsp,
const compat_sigset_t __user *, sigmask, compat_size_t, sigsetsize)
{
compat_sigset_t ss32;
sigset_t ksigmask, sigsaved;
struct timespec64 ts, end_time, *to = NULL;
int ret;
@ -1386,9 +1383,8 @@ COMPAT_SYSCALL_DEFINE5(ppoll, struct pollfd __user *, ufds,
if (sigmask) {
if (sigsetsize != sizeof(compat_sigset_t))
return -EINVAL;
if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
if (get_compat_sigset(&ksigmask, sigmask))
return -EFAULT;
sigset_from_compat(&ksigmask, &ss32);
sigdelsetmask(&ksigmask, sigmask(SIGKILL)|sigmask(SIGSTOP));
sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);