lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/lib/mlibc/options/linux/generic/linux-unistd.cpp b/lib/mlibc/options/linux/generic/linux-unistd.cpp
new file mode 100644
index 0000000..ec13f72
--- /dev/null
+++ b/lib/mlibc/options/linux/generic/linux-unistd.cpp
@@ -0,0 +1,33 @@
+#include <bits/linux/linux_unistd.h>
+#include <bits/ensure.h>
+
+#include <errno.h>
+#include <mlibc/posix-sysdeps.hpp>
+#include <unistd.h>
+
+int dup3(int oldfd, int newfd, int flags) {
+	if(oldfd == newfd) {
+		errno = EINVAL;
+		return -1;
+	}
+	MLIBC_CHECK_OR_ENOSYS(mlibc::sys_dup2, -1);
+	if(int e = mlibc::sys_dup2(oldfd, flags, newfd); e) {
+		errno = e;
+		return -1;
+	}
+	return newfd;
+}
+
+int vhangup(void) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+
+int getdtablesize(void){
+	return sysconf(_SC_OPEN_MAX);
+}
+
+int syncfs(int) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}