feat(unistd): cwd/link/readlink/path ops

src/unistd/unlink.c

@@ -0,0 +1,27 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "../internal/syscall.h"
+
+/*
+ * unlink/unlinkat: remove a directory entry. unlink(path) names the
+ * entry directly; unlinkat resolves a relative path against the
+ * directory fd and, when flag is AT_REMOVEDIR, removes the empty
+ * directory fd/path instead of a non-directory name. Symbolic links are
+ * themselves removed, never followed. Return 0, or -1 with errno set.
+ */
+int
+unlink(const char *path)
+{
+    return syscall_ret(__syscall1(SYS_unlink, (long)path));
+}
+
+int
+unlinkat(int fd, const char *path, int flag)
+{
+    return syscall_ret(__syscall3(SYS_unlinkat, fd, (long)path, flag));
+}