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sigpending(): move compat to native 

... and kill set_fs() use

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-05-31 04:42:07 -04:00
parent d9e968cb9f
commit 8f13621abc
2 changed files with 12 additions and 23 deletions
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23
kernel/compat.c
View File

@ -350,29 +350,6 @@ COMPAT_SYSCALL_DEFINE3(setitimer, int, which,
return 0;
}
#ifdef __ARCH_WANT_SYS_SIGPENDING
/*
* Assumption: old_sigset_t and compat_old_sigset_t are both
* types that can be passed to put_user()/get_user().
*/
COMPAT_SYSCALL_DEFINE1(sigpending, compat_old_sigset_t __user *, set)
{
old_sigset_t s;
long ret;
mm_segment_t old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_sigpending((old_sigset_t __user *) &s);
set_fs(old_fs);
if (ret == 0)
ret = put_user(s, set);
return ret;
}
#endif
#ifdef __ARCH_WANT_SYS_SIGPROCMASK
/*

12
kernel/signal.c
View File

@ -3254,6 +3254,18 @@ SYSCALL_DEFINE1(sigpending, old_sigset_t __user *, set)
return sys_rt_sigpending((sigset_t __user *)set, sizeof(old_sigset_t));
}
#ifdef CONFIG_COMPAT
COMPAT_SYSCALL_DEFINE1(sigpending, compat_old_sigset_t __user *, set32)
{
sigset_t set;
int err = do_sigpending(&set, sizeof(old_sigset_t));
if (err == 0)
if (copy_to_user(set32, &set, sizeof(old_sigset_t)))
err = -EFAULT;
return err;
}
#endif
#endif
#ifdef __ARCH_WANT_SYS_SIGPROCMASK