LibC: Add a lot of stub implementations for different libc functions

some ports want to link against these, but they are not ever called
based on simple testing

This patch adds stubs for
- openlog
- syslog
- getrusage
- mlock
- mprotect
- getpeername
- shutdown
- tzset
- mktime

userspace/libraries/LibC/CMakeLists.txt

@@ -25,12 +25,14 @@ set(LIBC_SOURCES
 	sys/banan-os.cpp
 	sys/ioctl.cpp
 	sys/mman.cpp
+	sys/resource.cpp
 	sys/select.cpp
 	sys/socket.cpp
 	sys/stat.cpp
 	sys/time.cpp
 	sys/utsname.cpp
 	sys/wait.cpp
+	syslog.cpp
 	termios.cpp
 	time.cpp
 	unistd.cpp

userspace/libraries/LibC/sys/mman.cpp

@@ -27,3 +27,16 @@ int msync(void* addr, size_t len, int flags)
 {
 	return syscall(SYS_MSYNC, addr, len, flags);
 }
+
+
+#include <BAN/Assert.h>
+
+int mlock(const void*, size_t)
+{
+	ASSERT_NOT_REACHED();
+}
+
+int mprotect(void*, size_t, int)
+{
+	ASSERT_NOT_REACHED();
+}

userspace/libraries/LibC/sys/resource.cpp

@@ -0,0 +1,7 @@
+#include <BAN/Assert.h>
+#include <sys/resource.h>
+
+int getrusage(int, struct rusage*)
+{
+	ASSERT_NOT_REACHED();
+}

userspace/libraries/LibC/sys/socket.cpp

@@ -77,3 +77,17 @@ int setsockopt(int socket, int level, int option_name, const void* option_value,
 {
 	return syscall(SYS_SETSOCKOPT, socket, level, option_name, option_value, option_len);
 }
+
+
+
+#include <BAN/Assert.h>
+
+int getpeername(int, struct sockaddr* __restrict, socklen_t* __restrict)
+{
+	ASSERT_NOT_REACHED();
+}
+
+int shutdown(int, int)
+{
+	ASSERT_NOT_REACHED();
+}

userspace/libraries/LibC/syslog.cpp

@@ -0,0 +1,12 @@
+#include <BAN/Assert.h>
+#include <syslog.h>
+
+void openlog(const char*, int, int)
+{
+	ASSERT_NOT_REACHED();
+}
+
+void syslog(int, const char*, ...)
+{
+	ASSERT_NOT_REACHED();
+}

userspace/libraries/LibC/time.cpp

@@ -452,3 +452,18 @@ size_t strftime(char* __restrict s, size_t maxsize, const char* __restrict forma
 	s[len++] = '\0';
 	return len;
 }
+
+
+
+#include <BAN/Assert.h>
+
+long timezone;
+void tzset()
+{
+	ASSERT_NOT_REACHED();
+}
+
+time_t mktime(struct tm*)
+{
+	ASSERT_NOT_REACHED();
+}