ustat: Add ustat stub for arches that don't have the ustat system call

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libc/sysdeps/linux/common/stubs.c

@@ -464,6 +464,10 @@ make_stub(umount2)
 make_stub(unshare)
 #endif
 
+#if defined __UCLIBC_SV4_DEPRECATED__ && !defined __NR_ustat
+make_stub(ustat)
+#endif
+
 #if !defined __NR_vhangup && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(vhangup)
 #endif

libc/sysdeps/linux/common/ustat.c

@@ -11,7 +11,8 @@
 #include <sys/ustat.h>
 #include <sys/sysmacros.h>
 
-#define __NR___syscall_ustat __NR_ustat
+#ifdef __NR_ustat
+# define __NR___syscall_ustat __NR_ustat
 /* Kernel's fs/super.c defines this:
  * long sys_ustat(unsigned dev, struct ustat __user * ubuf),
  * thus we use unsigned, not __kernel_dev_t.
@@ -24,3 +25,4 @@ int ustat(dev_t dev, struct ustat *ubuf)
 {
 	return __syscall_ustat(dev, ubuf);
 }
+#endif