Added "Fall through" comments to some switch statements where multiple

approaches are tried in order to prevent warnings from GCC 7 (and newer).

Added includes on Linux for sys/sysmacros.h as the old defines in
the sys/types.h file will be removed in the future.

doc/Changelog

@@ -25,6 +25,10 @@ sysvinit (2.90) UNRELEASED; urgency=low
       can be used to make sure init does not have any files open. However,
       it also means we cannot switch run levels or bring down the system.
       The pipe can be re-opened by sending init the SIGUSR1 signal.
+    * Added "Fall through" comments to some switch statements where multiple
+      approaches are tried in order to prevent warnings from GCC 7 (and newer).
+    * Added includes on Linux for sys/sysmacros.h as the old defines in
+      the sys/types.h file will be removed in the future.
       
 
 sysvinit (2.89) world; urgency=low

src/consoles.c

@@ -33,6 +33,7 @@
 #  include <sys/vt.h>
 #  include <sys/kd.h>
 #  include <linux/serial.h>
+#include <sys/sysmacros.h>  
 #endif
 #include <fcntl.h>
 #include <dirent.h>

src/hddown.c

@@ -233,6 +233,7 @@ static int do_standby_disk(char *device, unsigned int flags)
 	case DISK_EXTFLUSH:
 		if ((ret = ioctl(fd, HDIO_DRIVE_CMD, &flush1)) == 0)
 			break;
+                /* Else Fall through */
 		/* Extend flush rejected, try standard flush */
 	default:
 		ret = ioctl(fd, HDIO_DRIVE_CMD, &flush2) &&

src/init.c

@@ -1318,6 +1318,7 @@ void startup(CHILD *ch)
 		case POWERFAIL:
 		case ONCE:
 			if (ch->flags & XECUTED) break;
+                        /* Fall through */
 		case ONDEMAND:
 		case RESPAWN:
   			ch->flags |= RUNNING;

src/killall5.c

@@ -653,6 +653,7 @@ int readproc(int do_stat)
 		case DO_NETFS:
 			if ((p->nfs = check4nfs(path, buf)))
 				goto link;
+                        /* else fall through */
 		case DO_STAT:
 			if (stat(path, &st) != 0) {
 				char * ptr;

src/shutdown.c

@@ -41,6 +41,9 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/wait.h>
+#ifdef __linux__
+#include <sys/sysmacros.h>   /* brought in my LFS patch */
+#endif
 #include <time.h>
 #include <string.h>
 #include <errno.h>

src/sulogin.c

@@ -32,6 +32,9 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/wait.h>
+#ifdef __linux__
+#include <sys/sysmacros.h> 
+#endif
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>