Nuke GEMDOSFS. Unused part of unused atari port. Simplifies

MSDOSFS code. Eliminates -G option to mount_msdos.

Nit detection by gwk@, tom@, jmc@.

ok weingart@ tom@ thib@ dlg@ deraadt@

6 files changed, 11 insertions, 145 deletions

diff --git a/sys/msdosfs/bootsect.h b/sys/msdosfs/bootsect.h
index 806062ee95e..56cde30376d 100644
--- a/sys/msdosfs/bootsect.h
+++ b/sys/msdosfs/bootsect.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bootsect.h,v 1.4 2000/11/10 15:33:10 provos Exp $	*/
+/*	$OpenBSD: bootsect.h,v 1.5 2006/12/15 03:04:24 krw Exp $	*/
 /*	$NetBSD: bootsect.h,v 1.8 1997/10/17 11:23:29 ws Exp $	*/
 
 /*
@@ -71,22 +71,6 @@ struct bootsector710 {
 #define	BOOTSIG2	0
 #define	BOOTSIG3	0
 };
-#ifdef	atari
-/*
- * The boot sector on a gemdos fs is a little bit different from the msdos fs
- * format. Currently there is no need to declare a separate structure, the
- * bootsector33 struct will do.
- */
-#if 0
-struct bootsec_atari {
-	u_int8_t	bsBranch[2];		/* branch inst if auto-boot	*/
-	int8_t		bsFiller[6];		/* anything or nothing		*/
-	int8_t		bsSerial[3];		/* serial no. for mediachange	*/
-	int8_t		bsBPB[19];		/* BIOS parameter block		*/
-	int8_t		bsBootCode[482];	/* pad so struct is 512b	*/
-};
-#endif
-#endif /* atari */
 
 union bootsector {
 	struct bootsector33 bs33;
diff --git a/sys/msdosfs/bpb.h b/sys/msdosfs/bpb.h
index 0817efb91c5..d9550a1b40c 100644
--- a/sys/msdosfs/bpb.h
+++ b/sys/msdosfs/bpb.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bpb.h,v 1.4 2005/09/28 20:53:56 miod Exp $	*/
+/*	$OpenBSD: bpb.h,v 1.5 2006/12/15 03:04:24 krw Exp $	*/
 /*	$NetBSD: bpb.h,v 1.6 1997/10/17 11:23:35 ws Exp $	*/
 
 /*
@@ -81,28 +81,6 @@ struct bpb710 {
 	/* There is a 12 byte filler here, but we ignore it */
 };
 
-#ifdef	atari
-/*
- * BPB for gemdos filesystems. Atari leaves the obsolete stuff undefined.
- * Currently there is no need for a separate BPB structure.
- */
-#if 0
-struct bpb_a {
-	u_int16_t	bpbBytesPerSec;	/* bytes per sector		*/
-	u_int8_t	bpbSecPerClust;	/* sectors per cluster		*/
-	u_int16_t	bpbResSectors;	/* number of reserved sectors	*/
-	u_int8_t	bpbFATs;	/* number of FATs		*/
-	u_int16_t	bpbRootDirEnts;	/* number of root directory entries */
-	u_int16_t	bpbSectors;	/* total number of sectors	*/
-	u_int8_t	bpbUseless1;	/* meaningless on gemdos fs	*/
-	u_int16_t	bpbFATsecs;	/* number of sectors per FAT	*/
-	u_int16_t	bpbUseless2;	/* meaningless for harddisk fs	*/
-	u_int16_t	bpbUseless3;	/* meaningless for harddisk fs	*/
-	u_int16_t	bpbHiddenSecs;	/* the TOS-BIOS ignores this	*/
-};
-#endif
-#endif	/* atari */
-
 /*
  * The following structures represent how the bpb's look on disk.  shorts
  * and longs are just character arrays of the appropriate length.  This is
diff --git a/sys/msdosfs/fat.h b/sys/msdosfs/fat.h
index 48d45bf0184..661736e0d82 100644
--- a/sys/msdosfs/fat.h
+++ b/sys/msdosfs/fat.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fat.h,v 1.8 2006/10/03 19:49:06 pedro Exp $	*/
+/*	$OpenBSD: fat.h,v 1.9 2006/12/15 03:04:24 krw Exp $	*/
 /*	$NetBSD: fat.h,v 1.11 1997/10/17 11:23:49 ws Exp $	*/
 
 /*-
@@ -71,11 +71,6 @@
  * than 4078 ((CLUST_RSRVS - CLUST_FIRST) & FAT12_MASK) then we've got a
  * 16 bit fat filesystem. While mounting, the result of this test is stored
  * in pm_fatentrysize.
- * GEMDOS-flavour (atari):
- * If the filesystem is on floppy we've got a 12 bit fat filesystem, otherwise
- * 16 bit. We check the d_type field in the disklabel struct while mounting
- * and store the result in the pm_fatentrysize. Note that this kind of
- * detection gets flakey when mounting a vnd-device.
  */
 #define	FAT12(pmp)	(pmp->pm_fatmask == FAT12_MASK)
 #define	FAT16(pmp)	(pmp->pm_fatmask == FAT16_MASK)
diff --git a/sys/msdosfs/msdosfs_vfsops.c b/sys/msdosfs/msdosfs_vfsops.c
index 4f312c02827..e64bbe7ba28 100644
--- a/sys/msdosfs/msdosfs_vfsops.c
+++ b/sys/msdosfs/msdosfs_vfsops.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: msdosfs_vfsops.c,v 1.44 2006/12/14 10:55:03 tom Exp $	*/
+/*	$OpenBSD: msdosfs_vfsops.c,v 1.45 2006/12/15 03:04:24 krw Exp $	*/
 /*	$NetBSD: msdosfs_vfsops.c,v 1.48 1997/10/18 02:54:57 briggs Exp $	*/
 
 /*-
@@ -214,12 +214,6 @@ msdosfs_mount(mp, path, data, ndp, p)
 	pmp->pm_mask = args.mask;
 	pmp->pm_flags |= args.flags & MSDOSFSMNT_MNTOPT;
 
-	/*
-	 * GEMDOS knows nothing (yet) about win95
-	 */
-	if (pmp->pm_flags & MSDOSFSMNT_GEMDOSFS)
-		pmp->pm_flags |= MSDOSFSMNT_NOWIN95;
-	
 	if (pmp->pm_flags & MSDOSFSMNT_NOWIN95)
 		pmp->pm_flags |= MSDOSFSMNT_SHORTNAME;
 	else if (!(pmp->pm_flags & (MSDOSFSMNT_SHORTNAME | MSDOSFSMNT_LONGNAME))) {
@@ -263,7 +257,6 @@ msdosfs_mountfs(devvp, mp, p, argp)
 	struct msdosfsmount *pmp;
 	struct buf *bp;
 	dev_t dev = devvp->v_rdev;
-	struct partinfo dpart;
 	union bootsector *bsp;
 	struct byte_bpb33 *b33;
 	struct byte_bpb50 *b50;
@@ -271,7 +264,6 @@ msdosfs_mountfs(devvp, mp, p, argp)
 	extern struct vnode *rootvp;
 	u_int8_t SecPerClust;
 	int	ronly, error, bmapsiz;
-	int	bsize = 0, dtype = 0, tmp;
 	uint32_t fat_max_clusters;
 
 	/*
@@ -298,30 +290,6 @@ msdosfs_mountfs(devvp, mp, p, argp)
 	bp  = NULL; /* both used in error_exit */
 	pmp = NULL;
 
-	if (argp->flags & MSDOSFSMNT_GEMDOSFS) {
-		/*
-	 	 * We need the disklabel to calculate the size of a FAT entry
-		 * later on. Also make sure the partition contains a filesystem
-		 * of type FS_MSDOS. This doesn't work for floppies, so we have
-		 * to check for them too.
-	 	 *
-	 	 * At least some parts of the msdos fs driver seem to assume
-		 * that the size of a disk block will always be 512 bytes.
-		 * Let's check it...
-		 */
-		error = VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart,
-				  FREAD, NOCRED, p);
-		if (error)
-			goto error_exit;
-		tmp   = dpart.part->p_fstype;
-		dtype = dpart.disklab->d_type;
-		bsize = dpart.disklab->d_secsize;
-		if (bsize != 512 || (dtype!=DTYPE_FLOPPY && tmp!=FS_MSDOS)) {
-			error = EFTYPE;
-			goto error_exit;
-		}
-	}
-
 	/*
 	 * Read the boot sector of the filesystem, and then check the
 	 * boot signature.  If not a dos boot sector then error out.
@@ -354,12 +322,9 @@ msdosfs_mountfs(devvp, mp, p, argp)
 	pmp->pm_Heads = getushort(b50->bpbHeads);
 	pmp->pm_Media = b50->bpbMedia;
 
-	if (!(argp->flags & MSDOSFSMNT_GEMDOSFS)) {
-    		if (!pmp->pm_BytesPerSec || !SecPerClust
-	    	    || pmp->pm_SecPerTrack > 63) {
-			error = EFTYPE;
-			goto error_exit;
-		}
+    	if (!pmp->pm_BytesPerSec || !SecPerClust || pmp->pm_SecPerTrack > 63) {
+		error = EFTYPE;
+		goto error_exit;
 	}
 
 	if (pmp->pm_Sectors == 0) {
@@ -387,47 +352,6 @@ msdosfs_mountfs(devvp, mp, p, argp)
 	} else
 	        pmp->pm_flags |= MSDOSFS_FATMIRROR;
 
-	if (argp->flags & MSDOSFSMNT_GEMDOSFS) {
-	        if (FAT32(pmp)) {
-		        /*
-			 * GEMDOS doesn't know fat32.
-			 */
-		        error = EINVAL;
-			goto error_exit;
-		}
-
-		/*
-		 * Check a few values (could do some more):
-		 * - logical sector size: power of 2, >= block size
-		 * - sectors per cluster: power of 2, >= 1
-		 * - number of sectors:   >= 1, <= size of partition
-		 */
-		if ( (SecPerClust == 0)
-		  || (SecPerClust & (SecPerClust - 1))
-		  || (pmp->pm_BytesPerSec < bsize)
-		  || (pmp->pm_BytesPerSec & (pmp->pm_BytesPerSec - 1))
-		  || (pmp->pm_HugeSectors == 0)
-		  || (pmp->pm_HugeSectors * (pmp->pm_BytesPerSec / bsize)
-							> dpart.part->p_size)
-		   ) {
-			error = EFTYPE;
-			goto error_exit;
-		}
-		/*
-		 * XXX - Many parts of the msdos fs driver seem to assume that
-		 * the number of bytes per logical sector (BytesPerSec) will
-		 * always be the same as the number of bytes per disk block
-		 * Let's pretend it is.
-		 */
-		tmp = pmp->pm_BytesPerSec / bsize;
-		pmp->pm_BytesPerSec  = bsize;
-		pmp->pm_HugeSectors *= tmp;
-		pmp->pm_HiddenSects *= tmp;
-		pmp->pm_ResSectors  *= tmp;
-		pmp->pm_Sectors     *= tmp;
-		pmp->pm_FATsecs     *= tmp;
-		SecPerClust         *= tmp;
-	}
 	pmp->pm_fatblk = pmp->pm_ResSectors;
 	if (FAT32(pmp)) {
 	        pmp->pm_rootdirblk = getulong(b710->bpbRootClust);
@@ -448,20 +372,7 @@ msdosfs_mountfs(devvp, mp, p, argp)
 	pmp->pm_maxcluster = pmp->pm_nmbrofclusters + 1;
 	pmp->pm_fatsize = pmp->pm_FATsecs * pmp->pm_BytesPerSec;
 
-	if (argp->flags & MSDOSFSMNT_GEMDOSFS) {
-		if ((pmp->pm_nmbrofclusters <= (0xff0 - 2))
-		      && ((dtype == DTYPE_FLOPPY) || ((dtype == DTYPE_VNODE)
-		      && ((pmp->pm_Heads == 1) || (pmp->pm_Heads == 2))))
-		     ) {
-		        pmp->pm_fatmask = FAT12_MASK;
-			pmp->pm_fatmult = 3;
-			pmp->pm_fatdiv = 2;
-		} else {
-		        pmp->pm_fatmask = FAT16_MASK;
-			pmp->pm_fatmult = 2;
-			pmp->pm_fatdiv = 1;
-		}
-	} else if (pmp->pm_fatmask == 0) {
+	if (pmp->pm_fatmask == 0) {
 		if (pmp->pm_maxcluster
 		    <= ((CLUST_RSRVD - CLUST_FIRST) & FAT12_MASK)) {
 			/*
diff --git a/sys/msdosfs/msdosfsmount.h b/sys/msdosfs/msdosfsmount.h
index 3b44d747981..56f2cd971ff 100644
--- a/sys/msdosfs/msdosfsmount.h
+++ b/sys/msdosfs/msdosfsmount.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: msdosfsmount.h,v 1.16 2004/05/14 04:05:05 tedu Exp $	*/
+/*	$OpenBSD: msdosfsmount.h,v 1.17 2006/12/15 03:04:24 krw Exp $	*/
 /*	$NetBSD: msdosfsmount.h,v 1.16 1997/10/17 11:24:24 ws Exp $	*/
 
 /*-
@@ -96,14 +96,13 @@ struct msdosfsmount {
 #define	MSDOSFSMNT_SHORTNAME	0x01
 #define	MSDOSFSMNT_LONGNAME	0x02
 #define	MSDOSFSMNT_NOWIN95	0x04
-#define	MSDOSFSMNT_GEMDOSFS	0x08
 #define MSDOSFSMNT_ALLOWDIRX	0x10
 #endif
 
 /* All flags above: */
 #define	MSDOSFSMNT_MNTOPT \
 	(MSDOSFSMNT_SHORTNAME|MSDOSFSMNT_LONGNAME|MSDOSFSMNT_NOWIN95 \
-	 |MSDOSFSMNT_GEMDOSFS|MSDOSFSMNT_ALLOWDIRX)
+	 |MSDOSFSMNT_ALLOWDIRX)
 #define	MSDOSFSMNT_RONLY	0x80000000	/* mounted read-only	*/
 #define	MSDOSFSMNT_WAITONFAT	0x40000000	/* mounted synchronous	*/
 #define	MSDOSFS_FATMIRROR	0x20000000	/* FAT is mirrored */
diff --git a/sys/sys/mount.h b/sys/sys/mount.h
index 27f4add81e7..ea848a7ddb3 100644
--- a/sys/sys/mount.h
+++ b/sys/sys/mount.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mount.h,v 1.76 2006/09/22 14:23:03 pedro Exp $	*/
+/*	$OpenBSD: mount.h,v 1.77 2006/12/15 03:04:24 krw Exp $	*/
 /*	$NetBSD: mount.h,v 1.48 1996/02/18 11:55:47 fvdl Exp $	*/
 
 /*
@@ -219,7 +219,6 @@ struct msdosfs_args {
 #define	MSDOSFSMNT_SHORTNAME	0x01	/* Force old DOS short names only */
 #define	MSDOSFSMNT_LONGNAME	0x02	/* Force Win'95 long names */
 #define	MSDOSFSMNT_NOWIN95	0x04	/* Completely ignore Win95 entries */
-#define	MSDOSFSMNT_GEMDOSFS	0x08	/* This is a gemdos-flavour */
 #define MSDOSFSMNT_ALLOWDIRX	0x10	/* dir is mode +x if r */
 
 /*