stat.2: EXAMPLE: extend program to also show ID of the containing device

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/stat.2

@@ -956,6 +956,7 @@ structure.
 #include <time.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/sysmacros.h>
 
 int
 main(int argc, char *argv[])
@@ -972,6 +973,9 @@ main(int argc, char *argv[])
         exit(EXIT_FAILURE);
     }
 
+    printf("ID of containing device:  [%lx,%lx]\\n",
+	    (long) major(sb.st_dev), (long) minor(sb.st_dev));
+
     printf("File type:                ");
 
     switch (sb.st_mode & S_IFMT) {