shinano-common: shim: bsd_signal

Change-Id: I4110bf8953024f7777e11880849184cbd9b526fb

shinano-common: Shim bsd_signal: build as shared

Change-Id: Iba94a11082aa47890b3835bcd63b98f41fd3599d

3 files changed, 176 insertions, 0 deletions

diff --git a/libshims/Android.mk b/libshims/Android.mk
index 542e76d..cb466ba 100644
--- a/libshims/Android.mk
+++ b/libshims/Android.mk
@@ -27,3 +27,12 @@ LOCAL_MODULE_TAGS := optional
 LOCAL_32_BIT_ONLY := true
 
 include $(BUILD_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := signal.c
+LOCAL_MODULE := libshims_signal
+LOCAL_SHARED_LIBRARIES := libc
+LOCAL_MODULE_TAGS := optional
+LOCAL_32_BIT_ONLY := true
+include $(BUILD_SHARED_LIBRARY)
+
diff --git a/libshims/signal.c b/libshims/signal.c
new file mode 100644
index 0000000..a3dcb9a
--- /dev/null
+++ b/libshims/signal.c
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2017 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "signal.h"
+
+sighandler_t bsd_signal(int signum, sighandler_t handler) {
+   return signal(signum, handler);
+}
+
diff --git a/libshims/signal.h b/libshims/signal.h
new file mode 100644
index 0000000..85c46c0
--- /dev/null
+++ b/libshims/signal.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _SIGNAL_H_
+#define _SIGNAL_H_
+
+#include <asm/sigcontext.h>
+#include <bits/pthread_types.h>
+#include <bits/timespec.h>
+#include <limits.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+#if defined(__LP64__) || defined(__mips__)
+/* For 64-bit (and mips), the kernel's struct sigaction doesn't match the POSIX one,
+ * so we need to expose our own and translate behind the scenes. */
+#  define sigaction __kernel_sigaction
+#  include <linux/signal.h>
+#  undef sigaction
+#else
+/* For 32-bit, we're stuck with the definitions we already shipped,
+ * even though they contain a sigset_t that's too small. */
+#  include <linux/signal.h>
+#endif
+
+#include <sys/ucontext.h>
+#define __BIONIC_HAVE_UCONTEXT_T
+
+__BEGIN_DECLS
+
+typedef int sig_atomic_t;
+
+/* The arm and x86 kernel header files don't define _NSIG. */
+#ifndef _KERNEL__NSIG
+#define _KERNEL__NSIG 64
+#endif
+
+/* Userspace's NSIG is the kernel's _NSIG + 1. */
+#define _NSIG (_KERNEL__NSIG + 1)
+#define NSIG _NSIG
+
+/* We take a few real-time signals for ourselves. May as well use the same names as glibc. */
+#define SIGRTMIN (__libc_current_sigrtmin())
+#define SIGRTMAX (__libc_current_sigrtmax())
+extern int __libc_current_sigrtmin(void);
+extern int __libc_current_sigrtmax(void);
+
+extern const char* const sys_siglist[];
+extern const char* const sys_signame[]; /* BSD compatibility. */
+
+typedef __sighandler_t sig_t; /* BSD compatibility. */
+typedef __sighandler_t sighandler_t; /* glibc compatibility. */
+
+#define si_timerid si_tid /* glibc compatibility. */
+
+#if defined(__LP64__)
+
+struct sigaction {
+  unsigned int sa_flags;
+  union {
+    sighandler_t sa_handler;
+    void (*sa_sigaction)(int, struct siginfo*, void*);
+  };
+  sigset_t sa_mask;
+  void (*sa_restorer)(void);
+};
+
+#elif defined(__mips__)
+
+struct sigaction {
+  unsigned int sa_flags;
+  union {
+    sighandler_t sa_handler;
+    void (*sa_sigaction) (int, struct siginfo*, void*);
+  };
+  sigset_t sa_mask;
+};
+
+#endif
+
+extern int sigaction(int, const struct sigaction*, struct sigaction*);
+
+extern sighandler_t signal(int, sighandler_t) __INTRODUCED_IN(21);
+
+extern int siginterrupt(int, int);
+
+extern int sigaddset(sigset_t*, int) __INTRODUCED_IN(21);
+extern int sigdelset(sigset_t*, int) __INTRODUCED_IN(21);
+extern int sigemptyset(sigset_t*) __INTRODUCED_IN(21);
+extern int sigfillset(sigset_t*) __INTRODUCED_IN(21);
+extern int sigismember(const sigset_t*, int) __INTRODUCED_IN(21);
+
+extern int sigpending(sigset_t*) __nonnull((1));
+extern int sigprocmask(int, const sigset_t*, sigset_t*);
+extern int sigsuspend(const sigset_t*) __nonnull((1));
+extern int sigwait(const sigset_t*, int*) __nonnull((1, 2));
+
+extern int raise(int);
+extern int kill(pid_t, int);
+extern int killpg(int, int);
+
+extern int sigaltstack(const stack_t*, stack_t*);
+
+extern void psiginfo(const siginfo_t*, const char*);
+extern void psignal(int, const char*);
+
+extern int pthread_kill(pthread_t, int);
+extern int pthread_sigmask(int, const sigset_t*, sigset_t*);
+
+extern int sigqueue(pid_t, int, const union sigval);
+extern int sigtimedwait(const sigset_t*, siginfo_t*, const struct timespec*);
+extern int sigwaitinfo(const sigset_t*, siginfo_t*);
+
+#if __ANDROID_API__ < 21
+#include <android/legacy_signal_inlines.h>
+#endif
+
+__END_DECLS
+
+#endif /* _SIGNAL_H_ */