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diff --git a/sysdeps/unix/sysv/minix/bits/sigaction.h b/sysdeps/unix/sysv/minix/bits/sigaction.h
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+/* Copyright (C) 1992, 1996 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.
+
+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.
+
+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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+/* Structure describing the action to be taken when a signal arrives. */
+struct sigaction
+ {
+ /* Signal handler. */
+ __sighandler_t sa_handler;
+
+ /* Additional set of signals to be blocked. */
+ __sigset_t sa_mask;
+
+ /* Special flags. */
+ int sa_flags;
+ };
+
+/* Bits in `sa_flags'. */
+#ifdef __USE_MISC
+#define SA_ONSTACK 0x1 /* Take signal on signal stack. */
+#define SA_RESETHAND 0x2 /* Reset signal handler when signal caught. */
+#define SA_NODEFER 0x4 /* Don't block signal while catching it. */
+#define SA_RESTART 0x8 /* Don't restart syscall on signal return. */
+#define SA_SIGINFO 0x10 /* Extended signal handling. */
+#define SA_NOCLDWAIT 0x20 /* Don't create zombies. */
+#define SA_COMPAT 0x80 /* Internal flag for old signal catchers. */
+#define SA_DISABLE 0x100 /* Disable alternate signal stack. */
+#endif
+#define SA_NOCLDSTOP 0x40 /* Don't send SIGCHLD when children stop. */
+
+
+/* Values for the HOW argument to `sigprocmask'. */
+#define SIG_BLOCK 0 /* Block signals. */
+#define SIG_UNBLOCK 1 /* Unblock signals. */
+#define SIG_SETMASK 2 /* Set the set of blocked signals. */