Bring in support for volume labels to the filesystem utilities.

Reviewed by:	mckusick

sbin/dumpfs/dumpfs.c

@@ -237,6 +237,9 @@ dumpfs(const char *name)
 	if (fsflags != 0)
 		printf("unknown flags (%#x)", fsflags);
 	putchar('\n');
+	printf("fsmnt\t%s\n", afs.fs_fsmnt);
+	printf("volname\t%s\tswuid\t%qu\n",
+		afs.fs_volname, afs.fs_swuid);
 	printf("\ncs[].cs_(nbfree,ndir,nifree,nffree):\n\t");
 	afs.fs_csp = calloc(1, afs.fs_cssize);
 	if (bread(&disk, fsbtodb(&afs, afs.fs_csaddr), afs.fs_csp, afs.fs_cssize) == -1)

sbin/newfs/mkfs.c

@@ -140,6 +140,8 @@ mkfs(struct partition *pp, char *fsys)
 	sblock.fs_flags = 0;
 	if (Uflag)
 		sblock.fs_flags |= FS_DOSOFTDEP;
+	if (Lflag)
+		strlcpy(sblock.fs_volname, volumelabel, MAXVOLLEN);
 	/*
 	 * Validate the given file system size.
 	 * Verify that its last block can actually be accessed.

sbin/newfs/newfs.8

@@ -40,6 +40,7 @@
 .Nd construct a new file system
 .Sh SYNOPSIS
 .Nm
+.Op Fl L Ar volname
 .Op Fl NU
 .Op Fl O Ar filesystem-type
 .Op Fl S Ar sector-size
@@ -82,6 +83,8 @@ The following options define the general layout policies:
 .Bl -tag -width indent
 .It Fl T Ar disktype
 For backward compatibility.
+.It Fl L Ar volname
+Add a volume label to the new file system.
 .It Fl N
 Cause the file system parameters to be printed out
 without really creating the file system.

sbin/newfs/newfs.c

@@ -117,6 +117,7 @@ static const char rcsid[] =
  */
 #define	NFPI		4
 
+int	Lflag;			/* add a volume label */
 int	Nflag;			/* run without writing file system */
 int	Oflag = 1;		/* file system format (1 => UFS1, 2 => UFS2) */
 int	Rflag;			/* regression test */
@@ -136,6 +137,7 @@ int	maxbpg;			/* maximum blocks per file in a cyl group */
 int	avgfilesize = AVFILESIZ;/* expected average file size */
 int	avgfilesperdir = AFPDIR;/* expected number of files per directory */
 int	fso;			/* filedescriptor to device */
+u_char	*volumelabel = NULL;	/* volume label for filesystem */
 
 static char	device[MAXPATHLEN];
 static char	*disktype;
@@ -153,12 +155,25 @@ main(int argc, char *argv[])
 	struct partition oldpartition;
 	struct stat st;
 	char *cp, *special;
-	int ch;
+	int ch, i;
 	off_t mediasize;
 
 	while ((ch = getopt(argc, argv,
-	    "NO:RS:T:Ua:b:c:d:e:f:g:h:i:m:o:s:")) != -1)
+	    "L:NO:RS:T:Ua:b:c:d:e:f:g:h:i:m:o:s:")) != -1)
 		switch (ch) {
+		case 'L':
+			volumelabel = optarg;
+			i = -1;
+			while (isalnum(volumelabel[++i]));
+			if (volumelabel[i] != '\0') {
+				errx(1, "bad volume label. Valid characters are alphanumerics.");
+			}
+			if (strlen(volumelabel) >= MAXVOLLEN) {
+				errx(1, "bad volume label. Length is longer than %d.",
+				    MAXVOLLEN);
+			}
+			Lflag = 1;
+			break;
 		case 'N':
 			Nflag = 1;
 			break;
@@ -390,6 +405,7 @@ usage()
 	    getprogname(),
 	    " [device-type]");
 	fprintf(stderr, "where fsoptions are:\n");
+	fprintf(stderr, "\t-L volume label to add to superblock\n");
 	fprintf(stderr,
 	    "\t-N do not create file system, just print out parameters\n");
 	fprintf(stderr, "\t-O file system format: 1 => UFS1, 2 => UFS2\n");

sbin/newfs/newfs.h

@@ -49,6 +49,7 @@
 /*
  * variables set up by front end.
  */
+extern int	Lflag;		/* add a volume label */
 extern int	Nflag;		/* run mkfs without writing file system */
 extern int	Oflag;		/* build UFS1 format file system */
 extern int	Rflag;		/* regression test */
@@ -68,5 +69,6 @@ extern int	maxbpg;		/* maximum blocks per file in a cyl group */
 extern int	avgfilesize;	/* expected average file size */
 extern int	avgfilesperdir;	/* expected number of files per directory */
 extern int	fso;		/* filedescriptor to device */
+extern u_char	*volumelabel;	/* volume label for filesystem */
 
 void mkfs (struct partition *, char *);

sbin/tunefs/tunefs.8

@@ -41,6 +41,7 @@
 .Sh SYNOPSIS
 .Nm
 .Op Fl A
+.Op Fl L Ar volname
 .Op Fl a Cm enable | disable
 .Op Fl e Ar maxbpg
 .Op Fl f Ar avgfilesize
@@ -71,6 +72,8 @@ Specifying
 this option will cause all backups to be modified as well as the
 primary super-block.
 This is potentially dangerous - use with caution.
+.It Fl L Ar volname
+Add/modify an optional file system volume label.
 .It Fl a Cm enable | disable
 Turn on/off the administrative ACL enable flag.
 .It Fl e Ar maxbpg

sbin/tunefs/tunefs.c

@@ -57,6 +57,7 @@ static const char rcsid[] =
 #include <ufs/ufs/dinode.h>
 #include <ufs/ffs/fs.h>
 
+#include <ctype.h>
 #include <err.h>
 #include <fcntl.h>
 #include <fstab.h>
@@ -81,26 +82,42 @@ main(int argc, char *argv[])
 {
 	const char *special, *on;
 	const char *name;
-	int Aflag = 0, active = 0, aflag = 0;
+	int Aflag = 0, Lflag = 0, active = 0, aflag = 0;
 	int eflag = 0, fflag = 0, lflag = 0, mflag = 0;
 	int nflag = 0, oflag = 0, pflag = 0, sflag = 0;
 	int evalue = 0, fvalue = 0;
 	int mvalue = 0, ovalue = 0, svalue = 0;
-	char *avalue = NULL, *lvalue = NULL, *nvalue = NULL; 
+	char *Lvalue = NULL, *avalue = NULL, *lvalue = NULL, *nvalue = NULL; 
 	const char *chg[2];
 	struct ufs_args args;
 	struct statfs stfs;
-	int found_arg, ch;
+	int found_arg, ch, i;
 
         if (argc < 3)
                 usage();
 	found_arg = 0; /* at least one arg is required */
-	while ((ch = getopt(argc, argv, "Aa:e:f:l:m:n:o:ps:")) != -1)
+	while ((ch = getopt(argc, argv, "AL:a:e:f:l:m:n:o:ps:")) != -1)
 	  switch (ch) {
 	  case 'A':
 		found_arg = 1;
 		Aflag++;
 		break;
+	  case 'L':
+		found_arg = 1;
+		name = "volume label";
+		Lvalue = optarg;
+		i = -1;
+		while (isalnum(Lvalue[++i]));
+		if (Lvalue[i] != '\0') {
+			errx(10, "bad %s. Valid characters are alphanumerics.",
+			    name);
+		}
+		if (strlen(Lvalue) >= MAXVOLLEN) {
+			errx(10, "bad %s. Length is longer than %d.",
+			    name, MAXVOLLEN - 1);
+		}
+		Lflag = 1;
+		break;
 	  case 'a':
 		found_arg = 1;
 		name = "ACLs";
@@ -204,6 +221,10 @@ main(int argc, char *argv[])
 		printfs();
 		exit(0);
 	}
+	if (Lflag) {
+		name = "volume label";
+		strlcpy(sblock.fs_volname, Lvalue, MAXVOLLEN);
+	}
 	if (aflag) {
 		name = "ACLs";
 		if (strcmp(avalue, "enable") == 0) {
@@ -354,10 +375,11 @@ main(int argc, char *argv[])
 void
 usage(void)
 {
-	fprintf(stderr, "%s\n%s\n%s\n",
-"usage: tunefs [-A] [-a enable | disable] [-e maxbpg] [-f avgfilesize]",
-"              [-l enable | disable] [-m minfree] [-n enable | disable]",
-"              [-o space | time] [-p] [-s avgfpdir] special | filesystem");
+	fprintf(stderr, "%s\n%s\n%s\n%s\n",
+"usage: tunefs [-A] [-L volname] [-a enable | disable] [-e maxbpg]",
+"              [-f avgfilesize] [-l enable | disable] [-m minfree]",
+"              [-n enable | disable] [-o space | time] [-p]",
+"              [-s avgfpdir] special | filesystem");
 	exit(2);
 }
 
@@ -386,4 +408,6 @@ printfs(void)
 	if (sblock.fs_minfree < MINFREE &&
 	    sblock.fs_optim == FS_OPTTIME)
 		warnx(OPTWARN, "space", "<", MINFREE);
+	warnx("volume label: (-L)                                 %s",
+		sblock.fs_volname);
 }