1 files changed, 108 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sigsetops.h b/sysdeps/unix/sysv/linux/sigsetops.h
new file mode 100644
index 0000000000..6fcfd4cf7e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sigsetops.h
@@ -0,0 +1,108 @@
+/* __sigset_t manipulators.  Linux version.
+   Copyright (C) 1991-2018 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 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
+   Lesser General Public License for more details.
+
+   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 _SIGSETOPS_H
+#define _SIGSETOPS_H 1
+
+#include <signal.h>
+
+/* Return a mask that includes the bit for SIG only.  */
+# define __sigmask(sig) \
+  (((unsigned long int) 1) << (((sig) - 1) % (8 * sizeof (unsigned long int))))
+
+/* Return the word index for SIG.  */
+# define __sigword(sig) (((sig) - 1) / (8 * sizeof (unsigned long int)))
+
+# define __sigemptyset(set)					\
+  (__extension__ ({						\
+    int __cnt = _SIGSET_NWORDS;					\
+    sigset_t *__set = (set);					\
+    while (--__cnt >= 0)					\
+      __set->__val[__cnt] = 0;					\
+    (void)0;							\
+  }))
+
+# define __sigfillset(set)					\
+  (__extension__ ({						\
+    int __cnt = _SIGSET_NWORDS;					\
+    sigset_t *__set = (set);					\
+    while (--__cnt >= 0)					\
+      __set->__val[__cnt] = ~0UL;				\
+    (void)0;							\
+  }))
+
+# define __sigisemptyset(set)					\
+  (__extension__ ({						\
+    int __cnt = _SIGSET_NWORDS;					\
+    const sigset_t *__set = (set);				\
+    int __ret = __set->__val[--__cnt];				\
+    while (!__ret && --__cnt >= 0)				\
+      __ret = __set->__val[__cnt];				\
+    __ret == 0;							\
+  }))
+
+# define __sigandset(dest, left, right)				\
+  (__extension__ ({						\
+    int __cnt = _SIGSET_NWORDS;					\
+    sigset_t *__dest = (dest);					\
+    const sigset_t *__left = (left);				\
+    const sigset_t *__right = (right);				\
+    while (--__cnt >= 0)					\
+      __dest->__val[__cnt] = (__left->__val[__cnt]		\
+			      & __right->__val[__cnt]);		\
+    (void)0;							\
+  }))
+
+# define __sigorset(dest, left, right)				\
+  (__extension__ ({						\
+    int __cnt = _SIGSET_NWORDS;					\
+    sigset_t *__dest = (dest);					\
+    const sigset_t *__left = (left);				\
+    const sigset_t *__right = (right);				\
+    while (--__cnt >= 0)					\
+      __dest->__val[__cnt] = (__left->__val[__cnt]		\
+			      | __right->__val[__cnt]);		\
+    (void)0;							\
+  }))
+
+/* These macros needn't check for a bogus signal number;
+   error checking is done in the non-__ versions.  */
+# define __sigismember(set, sig)				\
+  (__extension__ ({						\
+    unsigned long int __mask = __sigmask (sig);			\
+    unsigned long int __word = __sigword (sig);			\
+    (set)->__val[__word] & __mask ? 1 : 0;			\
+  }))
+
+# define __sigaddset(set, sig)					\
+  (__extension__ ({						\
+    unsigned long int __mask = __sigmask (sig);			\
+    unsigned long int __word = __sigword (sig);			\
+    (set)->__val[__word] |= __mask;				\
+    (void)0;							\
+  }))
+
+# define __sigdelset(set, sig)					\
+  (__extension__ ({						\
+    unsigned long int __mask = __sigmask (sig);			\
+    unsigned long int __word = __sigword (sig);			\
+    (set)->__val[__word] &= ~__mask;				\
+    (void)0;							\
+ }))
+
+#endif /* bits/sigsetops.h */