Add a simple SIGINFO handler to fsck_ffs. Shortly after receipt of

a SIGINFO (normally via Ctrl-T), a line will be output indicating
the current phase number and progress information relevant to the
current phase.

Approved by:	mckusick

sbin/fsck_ffs/fsck.h

@@ -223,6 +223,8 @@ int	lfmode;			/* lost & found directory creation mode */
 ufs_daddr_t n_blks;		/* number of blocks in use */
 ufs_daddr_t n_files;		/* number of files in use */
 
+int	got_siginfo;		/* received a SIGINFO */
+
 #define	clearinode(dp)	(*(dp) = zino)
 struct	dinode zino;
 
@@ -280,6 +282,7 @@ struct inoinfo *getinoinfo __P((ino_t inumber));
 struct dinode  *getnextinode __P((ino_t inumber));
 void		getpathname __P((char *namebuf, ino_t curdir, ino_t ino));
 struct dinode  *ginode __P((ino_t inumber));
+void		infohandler __P((int sig));
 void		inocleanup __P((void));
 void		inodirty __P((void));
 struct inostat *inoinfo __P((ino_t inum));

sbin/fsck_ffs/main.c

@@ -140,6 +140,7 @@ main(argc, argv)
 		(void)signal(SIGINT, catch);
 	if (preen)
 		(void)signal(SIGQUIT, catchquit);
+	signal(SIGINFO, infohandler);
 	/*
 	 * Push up our allowed memory limit so we can cope
 	 * with huge filesystems.

sbin/fsck_ffs/pass1.c

@@ -93,6 +93,12 @@ pass1()
 		inumber = c * sblock.fs_ipg;
 		setinodebuf(inumber);
 		inosused = sblock.fs_ipg;
+		if (got_siginfo) {
+			printf("%s: phase 1: cyl group %d of %d (%d%%)\n",
+			    cdevname, c, sblock.fs_ncg,
+			    c * 100 / sblock.fs_ncg);
+			got_siginfo = 0;
+		}
 		/*
 		 * If we are using soft updates, then we can trust the
 		 * cylinder group inode allocation maps to tell us which

sbin/fsck_ffs/pass1b.c

@@ -65,6 +65,12 @@ pass1b()
 	duphead = duplist;
 	inumber = 0;
 	for (c = 0; c < sblock.fs_ncg; c++) {
+		if (got_siginfo) {
+			printf("%s: phase 1b: cyl group %d of %d (%d%%)\n",
+			    cdevname, c, sblock.fs_ncg,
+			    c * 100 / sblock.fs_ncg);
+			got_siginfo = 0;
+		}
 		for (i = 0; i < sblock.fs_ipg; i++, inumber++) {
 			if (inumber < ROOTINO)
 				continue;

sbin/fsck_ffs/pass2.c

@@ -134,6 +134,12 @@ pass2()
 	dp = &dino;
 	inpend = &inpsort[inplast];
 	for (inpp = inpsort; inpp < inpend; inpp++) {
+		if (got_siginfo) {
+			printf("%s: phase 2: dir %d of %d (%d%%)\n", cdevname,
+			    inpp - inpsort, inplast, (inpp - inpsort) * 100 /
+			    inplast);
+			got_siginfo = 0;
+		}
 		inp = *inpp;
 		if (inp->i_isize == 0)
 			continue;

sbin/fsck_ffs/pass3.c

@@ -59,6 +59,12 @@ pass3()
 	char namebuf[MAXNAMLEN+1];
 
 	for (inpindex = inplast - 1; inpindex >= 0; inpindex--) {
+		if (got_siginfo) {
+			printf("%s: phase 3: dir %d of %d (%d%%)\n", cdevname,
+			    inplast - inpindex - 1, inplast,
+			    (inplast - inpindex - 1) * 100 / inplast);
+			got_siginfo = 0;
+		}
 		inp = inpsort[inpindex];
 		state = inoinfo(inp->i_number)->ino_state;
 		if (inp->i_number == ROOTINO ||

sbin/fsck_ffs/pass4.c

@@ -62,6 +62,12 @@ pass4()
 	idesc.id_type = ADDR;
 	idesc.id_func = pass4check;
 	for (cg = 0; cg < sblock.fs_ncg; cg++) {
+		if (got_siginfo) {
+			printf("%s: phase 4: cyl group %d of %d (%d%%)\n",
+			    cdevname, cg, sblock.fs_ncg,
+			    cg * 100 / sblock.fs_ncg);
+			got_siginfo = 0;
+		}
 		inumber = cg * sblock.fs_ipg;
 		for (i = 0; i < inostathead[cg].il_numalloced; i++, inumber++) {
 			if (inumber < ROOTINO)

sbin/fsck_ffs/pass5.c

@@ -169,6 +169,12 @@ pass5()
 	for (i = fs->fs_size; i < j; i++)
 		setbmap(i);
 	for (c = 0; c < fs->fs_ncg; c++) {
+		if (got_siginfo) {
+			printf("%s: phase 5: cyl group %d of %d (%d%%)\n",
+			    cdevname, c, sblock.fs_ncg,
+			    c * 100 / sblock.fs_ncg);
+			got_siginfo = 0;
+		}
 		getblk(&cgblk, cgtod(fs, c), fs->fs_cgsize);
 		if (!cg_chkmagic(cg))
 			pfatal("CG %d: BAD MAGIC NUMBER\n", c);

sbin/fsck_ffs/utilities.c

@@ -101,3 +101,10 @@ blockcheck(origname)
 	 */
 	return (origname);
 }
+
+void
+infohandler(sig)
+	int sig;
+{
+	got_siginfo = 1;
+}