/* The proper definitions for Linux/Alpha sigaction.
- Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1996-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _SIGNAL_H
+# error "Never include <bits/sigaction.h> directly; use <signal.h> instead."
+#endif
/* Structure describing the action to be taken when a signal arrives. */
struct sigaction
{
/* Signal handler. */
+#ifdef __USE_POSIX199309
+ union
+ {
+ /* Used if SA_SIGINFO is not set. */
+ __sighandler_t sa_handler;
+ /* Used if SA_SIGINFO is set. */
+ void (*sa_sigaction) (int, siginfo_t *, void *);
+ }
+ __sigaction_handler;
+# define sa_handler __sigaction_handler.sa_handler
+# define sa_sigaction __sigaction_handler.sa_sigaction
+#else
__sighandler_t sa_handler;
+#endif
/* Additional set of signals to be blocked. */
__sigset_t sa_mask;
/* Special flags. */
- unsigned int sa_flags;
+ int sa_flags;
};
/* Bits in `sa_flags'. */
-#define SA_NOCLDSTOP 0x00000004 /* Don't send SIGCHLD when children stop. */
+#define SA_NOCLDSTOP 0x00000004 /* Don't send SIGCHLD when children stop. */
+#define SA_NOCLDWAIT 0x00000020 /* Don't create zombie on child death. */
+#define SA_SIGINFO 0x00000040 /* Invoke signal-catching function with
+ three arguments instead of one. */
+#if defined __USE_UNIX98 || defined __USE_MISC
+# define SA_ONSTACK 0x00000001 /* Use signal stack by using `sa_restorer'. */
+#endif
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
+# define SA_RESTART 0x00000002 /* Restart syscall on signal return. */
+# define SA_NODEFER 0x00000008 /* Don't automatically block the signal
+ when its handler is being executed. */
+# define SA_RESETHAND 0x00000010 /* Reset to SIG_DFL on entry to handler. */
+#endif
#ifdef __USE_MISC
-#define SA_STACK 0x00000001 /* Use signal stack by using `sa_restorer'. */
-#define SA_RESTART 0x00000002 /* Don't restart syscall on signal return. */
-#define SA_INTERRUPT 0x20000000 /* Historical no-op. */
-#define SA_NOMASK 0x00000008 /* Don't automatically block the signal when
- its handler is being executed. */
-#define SA_ONESHOT 0x00000010 /* Reset to SIG_DFL on entry to handler. */
+# define SA_INTERRUPT 0x20000000 /* Historical no-op. */
/* Some aliases for the SA_ constants. */
-#define SA_NODEFER SA_NOMASK
-#define SA_RESETHAND SA_ONESHOT
+# define SA_NOMASK SA_NODEFER
+# define SA_ONESHOT SA_RESETHAND
+# define SA_STACK SA_ONSTACK
#endif
/* Values for the HOW argument to `sigprocmask'. */
-#define SIG_BLOCK 1 /* Block signals. */
-#define SIG_UNBLOCK 2 /* Unblock signals. */
-#define SIG_SETMASK 3 /* Set the set of blocked signals. */
+#define SIG_BLOCK 1 /* Block signals. */
+#define SIG_UNBLOCK 2 /* Unblock signals. */
+#define SIG_SETMASK 3 /* Set the set of blocked signals. */