Supply progress information in dump's process title, which is useful

for monitoring automated backups. This is based on a patch by Mikhail
Teterin, with some changes to make its operation clearer and to
update the proctitle more frequently.

PR:		bin/32138

sbin/dump/dump.h

@@ -83,6 +83,7 @@ int	blockswritten;	/* number of blocks written on current tape */
 int	tapeno;		/* current tape number */
 time_t	tstart_writing;	/* when started writing the first tape block */
 time_t	tend_writing;	/* after writing the last tape block */
+int	passno;		/* current dump pass number */
 struct	fs *sblock;	/* the file system super block */
 char	sblock_buf[MAXBSIZE];
 long	dev_bsize;	/* block size of underlying disk device */

sbin/dump/main.c

@@ -362,9 +362,13 @@ main(argc, argv)
 
 	nonodump = spcl.c_level < honorlevel;
 
+	passno = 1;
+	setproctitle("%s: pass 1: regular files", disk);
 	msg("mapping (Pass I) [regular files]\n");
 	anydirskipped = mapfiles(maxino, &tapesize);
 
+	passno = 2;
+	setproctitle("%s: pass 2: directories", disk);
 	msg("mapping (Pass II) [directories]\n");
 	while (anydirskipped) {
 		anydirskipped = mapdirs(maxino, &tapesize);
@@ -427,6 +431,8 @@ main(argc, argv)
 	(void)time((time_t *)&(tstart_writing));
 	dumpmap(usedinomap, TS_CLRI, maxino - 1);
 
+	passno = 3;
+	setproctitle("%s: pass 3: directories", disk);
 	msg("dumping (Pass III) [directories]\n");
 	dirty = 0;		/* XXX just to get gcc to shut up */
 	for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
@@ -445,6 +451,8 @@ main(argc, argv)
 		(void)dumpino(dp, ino);
 	}
 
+	passno = 4;
+	setproctitle("%s: pass 4: regular files", disk);
 	msg("dumping (Pass IV) [regular files]\n");
 	for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
 		int mode;

sbin/dump/optr.c

@@ -193,20 +193,25 @@ time_t	tschedule = 0;
 void
 timeest()
 {
+	double percent;
 	time_t	tnow;
-	int deltat;
+	int deltat, hours, mins;
 
 	(void) time(&tnow);
+	deltat = (blockswritten == 0) ? 0 : tstart_writing - tnow +
+	    (double)(tnow - tstart_writing) / blockswritten * tapesize;
+	percent = (blockswritten * 100.0) / tapesize;
+	hours = deltat / 3600;
+	mins = (deltat % 3600) / 60;
+
+	setproctitle("%s: pass %d: %3.2f%% done, finished in %d:%02d",
+	    disk, passno, percent, hours, mins);
 	if (tnow >= tschedule) {
 		tschedule = tnow + 300;
 		if (blockswritten < 500)
 			return;
-		deltat = tstart_writing - tnow +
-			(1.0 * (tnow - tstart_writing))
-			/ blockswritten * tapesize;
-		msg("%3.2f%% done, finished in %d:%02d\n",
-			(blockswritten * 100.0) / tapesize,
-			deltat / 3600, (deltat % 3600) / 60);
+		msg("%3.2f%% done, finished in %d:%02d\n", percent, hours,
+		    mins);
 	}
 }
 

sbin/dump/tape.c

@@ -527,6 +527,7 @@ startnewtape(top)
 	/*
 	 *	All signals are inherited...
 	 */
+	setproctitle(NULL);	/* Restore the proctitle. */
 	childpid = fork();
 	if (childpid < 0) {
 		msg("Context save fork fails in parent %d\n", parentpid);