1 files changed, 58 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/raise.c b/sysdeps/unix/sysv/linux/raise.c
new file mode 100644
index 0000000000..4106e8c458
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/raise.c
@@ -0,0 +1,58 @@
+/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   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/>.  */
+
+#include <errno.h>
+#include <limits.h>
+#include <signal.h>
+#include <sysdep.h>
+#include <nptl/pthreadP.h>
+
+
+int
+raise (sig)
+     int sig;
+{
+  struct pthread *pd = THREAD_SELF;
+  pid_t pid = THREAD_GETMEM (pd, pid);
+  pid_t selftid = THREAD_GETMEM (pd, tid);
+  if (selftid == 0)
+    {
+      /* This system call is not supposed to fail.  */
+#ifdef INTERNAL_SYSCALL
+      INTERNAL_SYSCALL_DECL (err);
+      selftid = INTERNAL_SYSCALL (gettid, err, 0);
+#else
+      selftid = INLINE_SYSCALL (gettid, 0);
+#endif
+      THREAD_SETMEM (pd, tid, selftid);
+
+      /* We do not set the PID field in the TID here since we might be
+	 called from a signal handler while the thread executes fork.  */
+      pid = selftid;
+    }
+  else
+    /* raise is an async-safe function.  It could be called while the
+       fork/vfork function temporarily invalidated the PID field.  Adjust for
+       that.  */
+    if (__glibc_unlikely (pid <= 0))
+      pid = (pid & INT_MAX) == 0 ? selftid : -pid;
+
+  return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
+}
+libc_hidden_def (raise)
+weak_alias (raise, gsignal)