Get rid of major/minor number distinction.

As of FreeBSD 6, devices can only be opened through devfs. These device
nodes don't have major and minor numbers anymore. The st_rdev field in
struct stat is simply based a copy of st_ino.

Simply display device numbers as hexadecimal, using "%#jx". This is
allowed by POSIX, since it explicitly states things like the following
(example taken from ls(1)):

	"If the file is a character special or block special file, the
	size of the file may be replaced with implementation-defined
	information associated with the device in question."

This makes the output of these commands more compact. For example, ls(1)
now uses approximately four columns less. While there, simplify the
column length calculation from ls(1) by calling snprintf() with a NULL
buffer.

Don't be afraid; if needed one can still obtain individual major/minor
numbers using stat(1).

bin/ls/ls.1

@@ -32,7 +32,7 @@
 .\"     @(#)ls.1	8.7 (Berkeley) 7/29/94
 .\" $FreeBSD$
 .\"
-.Dd April 4, 2008
+.Dd September 28, 2011
 .Dt LS 1
 .Os
 .Sh NAME
@@ -357,8 +357,7 @@ option is given,
 the numeric ID's are displayed.
 .Pp
 If the file is a character special or block special file,
-the major and minor device numbers for the file are displayed
-in the size field.
+the device number for the file is displayed in the size field.
 If the file is a symbolic link the pathname of the
 linked-to file is preceded by
 .Dq Li -> .

bin/ls/ls.c

@@ -563,7 +563,7 @@ display(const FTSENT *p, FTSENT *list, int options)
 	long maxblock;
 	u_long btotal, labelstrlen, maxinode, maxlen, maxnlink;
 	u_long maxlabelstr;
-	u_int devstrlen;
+	u_int sizelen;
 	int maxflags;
 	gid_t maxgroup;
 	uid_t maxuser;
@@ -572,7 +572,6 @@ display(const FTSENT *p, FTSENT *list, int options)
 	int entries, needstats;
 	const char *user, *group;
 	char *flags, *labelstr = NULL;
-	char buf[STRBUF_SIZEOF(u_quad_t) + 1];
 	char ngroup[STRBUF_SIZEOF(uid_t) + 1];
 	char nuser[STRBUF_SIZEOF(gid_t) + 1];
 
@@ -656,7 +655,8 @@ display(const FTSENT *p, FTSENT *list, int options)
 		MAKENINES(maxsize);
 		free(jinitmax);
 	}
-	devstrlen = 0;
+	d.s_size = 0;
+	sizelen = 0;
 	flags = NULL;
 	for (cur = list, entries = 0; cur; cur = cur->fts_link) {
 		if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) {
@@ -796,14 +796,12 @@ label_out:
 				np->group = &np->data[ulen + 1];
 				(void)strcpy(np->group, group);
 
-				if ((S_ISCHR(sp->st_mode) ||
-				    S_ISBLK(sp->st_mode)) &&
-				    devstrlen < DEVSTR_HEX_LEN) {
-					if (minor(sp->st_rdev) > 255 ||
-					    minor(sp->st_rdev) < 0)
-						devstrlen = DEVSTR_HEX_LEN;
-					else
-						devstrlen = DEVSTR_LEN;
+				if (S_ISCHR(sp->st_mode) ||
+				    S_ISBLK(sp->st_mode)) {
+					sizelen = snprintf(NULL, 0,
+					    "%#jx", (uintmax_t)sp->st_rdev);
+					if (d.s_size < sizelen)
+						d.s_size = sizelen;
 				}
 
 				if (f_flags) {
@@ -837,23 +835,16 @@ label_out:
 	d.maxlen = maxlen;
 	if (needstats) {
 		d.btotal = btotal;
-		(void)snprintf(buf, sizeof(buf), "%lu", maxblock);
-		d.s_block = strlen(buf);
+		d.s_block = snprintf(NULL, 0, "%lu", maxblock);
 		d.s_flags = maxflags;
 		d.s_label = maxlabelstr;
 		d.s_group = maxgroup;
-		(void)snprintf(buf, sizeof(buf), "%lu", maxinode);
-		d.s_inode = strlen(buf);
-		(void)snprintf(buf, sizeof(buf), "%lu", maxnlink);
-		d.s_nlink = strlen(buf);
-		if (f_humanval)
-			d.s_size = HUMANVALSTR_LEN;
-		else {
-			(void)snprintf(buf, sizeof(buf), "%ju", maxsize);
-			d.s_size = strlen(buf);
-		}
-		if (d.s_size < devstrlen)
-			d.s_size = devstrlen;
+		d.s_inode = snprintf(NULL, 0, "%lu", maxinode);
+		d.s_nlink = snprintf(NULL, 0, "%lu", maxnlink);
+		sizelen = f_humanval ? HUMANVALSTR_LEN :
+		    snprintf(NULL, 0, "%ju", maxsize);
+		if (d.s_size < sizelen)
+			d.s_size = sizelen;
 		d.s_user = maxuser;
 	}
 	printfcn(&d);

bin/ls/ls.h

@@ -36,8 +36,6 @@
 #define NO_PRINT	1
 
 #define HUMANVALSTR_LEN	5
-#define DEVSTR_LEN	8
-#define DEVSTR_HEX_LEN	15
 
 extern long blocksize;		/* block size units */
 

bin/ls/print.c

@@ -48,6 +48,7 @@ __FBSDID("$FreeBSD$");
 #include <langinfo.h>
 #include <libutil.h>
 #include <stdio.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
@@ -351,16 +352,8 @@ printaname(const FTSENT *p, u_long inodefield, u_long sizefield)
 static void
 printdev(size_t width, dev_t dev)
 {
-	char buf[DEVSTR_HEX_LEN + 1];
 
-	if (minor(dev) > 255 || minor(dev) < 0)
-		(void)snprintf(buf, sizeof(buf), "%3d, 0x%08x",
-		    major(dev), (u_int)minor(dev));
-	else
-		(void)snprintf(buf, sizeof(buf), "%3d, %3d",
-		    major(dev), minor(dev));
-
-	(void)printf("%*s ", (u_int)width, buf);
+	(void)printf("%#*jx ", (u_int)width, (uintmax_t)dev);
 }
 
 static void

bin/ps/print.c

@@ -392,17 +392,13 @@ tdev(KINFO *k, VARENT *ve)
 {
 	VAR *v;
 	dev_t dev;
-	char buff[16];
 
 	v = ve->var;
 	dev = k->ki_p->ki_tdev;
 	if (dev == NODEV)
 		(void)printf("%*s", v->width, "??");
-	else {
-		(void)snprintf(buff, sizeof(buff),
-		    "%d/%d", major(dev), minor(dev));
-		(void)printf("%*s", v->width, buff);
-	}
+	else
+		(void)printf("%#*jx", v->width, (uintmax_t)dev);
 }
 
 void

lib/libc/gen/devname.c

@@ -37,6 +37,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/sysctl.h>
 
 #include <stdio.h>
+#include <stdint.h>
 #include <string.h>
 #include <sys/param.h>
 #include <sys/stat.h>
@@ -60,8 +61,8 @@ devname_r(dev_t dev, mode_t type, char *buf, int len)
 	}
 
 	/* Finally just format it */
-	snprintf(buf, len, "#%c:%d:0x%x",
-	    S_ISCHR(type) ? 'C' : 'B', major(dev), minor(dev));
+	snprintf(buf, len, "#%c:%#jx",
+	    S_ISCHR(type) ? 'C' : 'B', (uintmax_t)dev);
 	return (buf);
 }
 

sbin/fsdb/fsdbutil.c

@@ -126,12 +126,10 @@ printstat(const char *cp, ino_t inum, union dinode *dp)
 	puts("regular file");
 	break;
     case IFBLK:
-	printf("block special (%d,%d)",
-	       major(DIP(dp, di_rdev)), minor(DIP(dp, di_rdev)));
+	printf("block special (%#jx)", (uintmax_t)DIP(dp, di_rdev));
 	break;
     case IFCHR:
-	printf("character special (%d,%d)",
-	       major(DIP(dp, di_rdev)), minor(DIP(dp, di_rdev)));
+	printf("character special (%#jx)", DIP(dp, di_rdev));
 	break;
     case IFLNK:
 	fputs("symlink",stdout);

usr.bin/find/find.1

@@ -31,7 +31,7 @@
 .\"	@(#)find.1	8.7 (Berkeley) 5/9/95
 .\" $FreeBSD$
 .\"
-.Dd March 17, 2010
+.Dd September 28, 2011
 .Dt FIND 1
 .Os
 .Sh NAME
@@ -507,7 +507,7 @@ This primary always evaluates to true.
 The following information for the current file is written to standard output:
 its inode number, size in 512-byte blocks, file permissions, number of hard
 links, owner, group, size in bytes, last modification time, and pathname.
-If the file is a block or character special file, the major and minor numbers
+If the file is a block or character special file, the device number
 will be displayed instead of the size in bytes.
 If the file is a symbolic link, the pathname of the linked-to file will be
 displayed preceded by

usr.bin/find/ls.c

@@ -70,8 +70,7 @@ printlong(char *name, char *accpath, struct stat *sb)
 	    group_from_gid(sb->st_gid, 0));
 
 	if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
-		(void)printf("%3d, %3d ", major(sb->st_rdev),
-		    minor(sb->st_rdev));
+		(void)printf("%#8jx ", (uintmax_t)sb->st_rdev);
 	else
 		(void)printf("%8"PRId64" ", sb->st_size);
 	printtime(sb->st_mtime);

usr.bin/fstat/fstat.1

@@ -28,7 +28,7 @@
 .\"     @(#)fstat.1	8.3 (Berkeley) 2/25/94
 .\" $FreeBSD$
 .\"
-.Dd July 9, 2009
+.Dd September 28, 2011
 .Dt FSTAT 1
 .Os
 .Sh NAME
@@ -142,7 +142,7 @@ pathname that the file system the file resides in is mounted on.
 If the
 .Fl n
 flag is specified, this header is present and is the
-major/minor number of the device that this file resides in.
+number of the device that this file resides in.
 .It Li INUM
 The inode number of the file.
 .It Li MODE

usr.bin/fstat/fstat.c

@@ -411,7 +411,7 @@ print_pts_info(struct procstat *procstat, struct filestat *fst)
 	}
 	printf("* pseudo-terminal master ");
 	if (nflg || !*pts.devname) {
-		printf("%10d,%-2d", major(pts.dev), minor(pts.dev));
+		printf("%#10jx", (uintmax_t)pts.dev);
 	} else {
 		printf("%10s", pts.devname);
 	}
@@ -441,7 +441,7 @@ print_vnode_info(struct procstat *procstat, struct filestat *fst)
 	}
 
 	if (nflg)
-		printf(" %2d,%-2d", major(vn.vn_fsid), minor(vn.vn_fsid));
+		printf(" %#8jx", (uintmax_t)vn.vn_fsid);
 	else if (vn.vn_mntdir != NULL)
 		(void)printf(" %-8s", vn.vn_mntdir);
 
@@ -457,7 +457,7 @@ print_vnode_info(struct procstat *procstat, struct filestat *fst)
 
 	if (vn.vn_type == PS_FST_VTYPE_VBLK || vn.vn_type == PS_FST_VTYPE_VCHR) {
 		if (nflg || !*vn.vn_devname)
-			printf("  %2d,%-2d", major(vn.vn_dev), minor(vn.vn_dev));
+			printf(" %#6jx", (uintmax_t)vn.vn_dev);
 		else {
 			printf(" %6s", vn.vn_devname);
 		}

usr.sbin/pstat/pstat.c

@@ -345,7 +345,7 @@ ttyprt(struct xtty *xt)
 		errx(1, "struct xtty size mismatch");
 	if (usenumflag || xt->xt_dev == 0 ||
 	   (name = devname(xt->xt_dev, S_IFCHR)) == NULL)
-		printf("%5d,%4d ", major(xt->xt_dev), minor(xt->xt_dev));
+		printf("%#10jx ", (uintmax_t)xt->xt_dev);
 	else
 		printf("%10s ", name);
 	printf("%5zu %4zu %4zu %4zu %5zu %4zu %4zu %5u %5d %5d ",