feat(stat): stat/mkdir/chmod and mode macros

src/stat/mknod.c

@@ -0,0 +1,31 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sys/stat.h>
+
+#include "../internal/syscall.h"
+#include "stat_impl.h"
+
+#if VLIBC_LEVEL_GE(2)
+
+/*
+ * mknod/mknodat over SYS_mknodat (XSI, level 2). The mode argument must
+ * carry a file-type bit (S_IFIFO, S_IFCHR, S_IFBLK, S_IFREG, ...); dev is
+ * the raw device id for the S_IFCHR/S_IFBLK cases and is otherwise
+ * ignored by the kernel. Creating device nodes requires privilege
+ * (CAP_MKNOD); creating a FIFO or a regular file does not.
+ */
+int
+mknodat(int fd, const char *path, mode_t mode, dev_t dev)
+{
+    return syscall_ret(__syscall4(SYS_mknodat, fd, (long)path, (long)mode, (long)dev));
+}
+
+int
+mknod(const char *path, mode_t mode, dev_t dev)
+{
+    return mknodat(VLIBC_STAT_AT_FDCWD, path, mode, dev);
+}
+
+#endif /* VLIBC_LEVEL_GE(2) */