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- don't define __LIBC12_SOURCE__ 

- need to SIG_IGN SIGSYS for the version check
- simplify code
This commit is contained in:
christos 2003-09-12 20:42:15 +00:00
parent d6526e7e34
commit ab0a78e1a7
1 changed files with 19 additions and 16 deletions
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35
lib/libc/arch/i386/sys/__sigaction14_sigtramp.c
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@ -1,4 +1,4 @@
/* $NetBSD: __sigaction14_sigtramp.c,v 1.5 2003/09/11 20:24:39 christos Exp $ */
/* $NetBSD: __sigaction14_sigtramp.c,v 1.6 2003/09/12 20:42:15 christos Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
@ -36,8 +36,6 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
#define __LIBC12_SOURCE__
#include <sys/types.h>
#include <sys/param.h>
#include <signal.h>
@ -53,31 +51,36 @@ static int have_sigreturn = -1;
static void get_have_sigreturn(void);
extern int __sigtramp_siginfo_2[];
extern int __sigtramp_sigcontext_1[];
static void
get_have_sigreturn(void)
{
#if defined(SYS___sigreturn14)
have_sigreturn = syscall(SYS___sigreturn14, NULL) == EFAULT;
#elif defined(SYS_compat_16___sigreturn14)
have_sigreturn = syscall(SYS_compat_16___sigreturn14, NULL) == EFAULT;
#else
have_sigreturn = 0;
#endif
struct sigaction nsa, osa;
sigemptyset(&nsa.sa_mask);
nsa.sa_flags = 0;
nsa.sa_handler = SIG_IGN;
__sigaction_sigtramp(SIGSYS, &nsa, &osa, __sigtramp_siginfo_2, 2);
(void)syscall(SYS_compat_16___sigreturn14, NULL);
have_sigreturn = errno == EFAULT;
__sigaction_sigtramp(SIGSYS, &osa, NULL, __sigtramp_siginfo_2, 2);
}
int
__libc_sigaction14(int sig, const struct sigaction *act, struct sigaction *oact)
{
extern int __sigtramp_siginfo_2[];
extern int __sigtramp_sigcontext_1[];
if (have_sigreturn == -1)
get_have_sigreturn();
if (have_sigreturn && act && (act->sa_flags & SA_SIGINFO) == 0)
return (__sigaction_sigtramp(sig, act, oact,
__sigtramp_sigcontext_1, 1));
return __sigaction_sigtramp(sig, act, oact,
__sigtramp_sigcontext_1, 1);
return (__sigaction_sigtramp(sig, act, oact, __sigtramp_siginfo_2, 2));
return __sigaction_sigtramp(sig, act, oact, __sigtramp_siginfo_2, 2);
}