From e723898372517d7a195b4eb18912751f9316ae2e Mon Sep 17 00:00:00 2001
From: Niall O'Higgins <niallo@cvs.openbsd.org>
Date: Sat, 30 Apr 2005 13:56:17 +0000
Subject: Support checking filesystems which have or once had large files (>4
 GB) on them.

From NetBSD
---
 sbin/fsck_ext2fs/dir.c    | 16 +++++------
 sbin/fsck_ext2fs/extern.h |  5 ++--
 sbin/fsck_ext2fs/fsck.h   |  4 +--
 sbin/fsck_ext2fs/inode.c  | 72 +++++++++++++++++++++++++++++++++++++++--------
 sbin/fsck_ext2fs/pass1.c  | 24 ++++++++--------
 sbin/fsck_ext2fs/pass2.c  |  8 +++---
 sbin/fsck_ext2fs/pass4.c  |  4 +--
 sbin/fsck_ext2fs/setup.c  |  5 +++-
 8 files changed, 94 insertions(+), 44 deletions(-)

diff --git a/sbin/fsck_ext2fs/dir.c b/sbin/fsck_ext2fs/dir.c
index b67261ba0ec..d6790e5dfdf 100644
--- a/sbin/fsck_ext2fs/dir.c
+++ b/sbin/fsck_ext2fs/dir.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dir.c,v 1.12 2003/07/29 18:38:35 deraadt Exp $	*/
+/*	$OpenBSD: dir.c,v 1.13 2005/04/30 13:56:15 niallo Exp $	*/
 /*	$NetBSD: dir.c,v 1.5 2000/01/28 16:01:46 bouyer Exp $	*/
 
 /*
@@ -363,7 +363,7 @@ linkup(ino_t orphan, ino_t parentdir)
 	lostdir = (fs2h16(dp->e2di_mode) & IFMT) == IFDIR;
 	pwarn("UNREF %s ", lostdir ? "DIR" : "FILE");
 	pinode(orphan);
-	if (preen && fs2h32(dp->e2di_size) == 0)
+	if (preen && inosize(dp) == 0)
 		return (0);
 	if (preen)
 		printf(" (RECONNECTED)\n");
@@ -491,9 +491,8 @@ makeentry(ino_t parent, ino_t ino, char *name)
 	idesc.id_fix = DONTKNOW;
 	idesc.id_name = name;
 	dp = ginode(parent);
-	if (fs2h32(dp->e2di_size) % sblock.e2fs_bsize) {
-		dp->e2di_size =
-			h2fs32(roundup(fs2h32(dp->e2di_size), sblock.e2fs_bsize));
+	if (inosize(dp) % sblock.e2fs_bsize) {
+		inossize(dp, roundup(inosize(dp), sblock.e2fs_bsize));
 		inodirty();
 	}
 	if ((ckinode(dp, &idesc) & ALTERED) != 0)
@@ -520,15 +519,15 @@ expanddir(struct ext2fs_dinode *dp, char *name)
 		exit(8);
 	}
 
-	lastbn = lblkno(&sblock, fs2h32(dp->e2di_size));
+	lastbn = lblkno(&sblock, inosize(dp));
 	if (lastbn >= NDADDR - 1 || fs2h32(dp->e2di_blocks[lastbn]) == 0 ||
-		fs2h32(dp->e2di_size) == 0)
+		inosize(dp) == 0)
 		return (0);
 	if ((newblk = allocblk()) == 0)
 		return (0);
 	dp->e2di_blocks[lastbn + 1] = dp->e2di_blocks[lastbn];
 	dp->e2di_blocks[lastbn] = h2fs32(newblk);
-	dp->e2di_size = h2fs32(fs2h32(dp->e2di_size) + sblock.e2fs_bsize);
+	inossize(dp, inosize(dp) + sblock.e2fs_bsize);
 	dp->e2di_nblock = h2fs32(fs2h32(dp->e2di_nblock) + 1);
 	bp = getdirblk(fs2h32(dp->e2di_blocks[lastbn + 1]),
 		sblock.e2fs_bsize);
@@ -558,6 +557,7 @@ bad:
 	dp->e2di_blocks[lastbn] = dp->e2di_blocks[lastbn + 1];
 	dp->e2di_blocks[lastbn + 1] = 0;
 	dp->e2di_size = h2fs32(fs2h32(dp->e2di_size) - sblock.e2fs_bsize);
+	inossize(dp, inosize(dp) - sblock.e2fs_bsize);
 	dp->e2di_nblock = h2fs32(fs2h32(dp->e2di_nblock) - 1);
 	freeblk(newblk);
 	return (0);
diff --git a/sbin/fsck_ext2fs/extern.h b/sbin/fsck_ext2fs/extern.h
index 82f4f70f855..091af9875d7 100644
--- a/sbin/fsck_ext2fs/extern.h
+++ b/sbin/fsck_ext2fs/extern.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: extern.h,v 1.5 2003/04/17 06:48:47 tedu Exp $	*/
+/*	$OpenBSD: extern.h,v 1.6 2005/04/30 13:56:16 niallo Exp $	*/
 /*	$NetBSD: extern.h,v 1.1 1997/06/11 11:21:46 bouyer Exp $	*/
 
 /*
@@ -35,7 +35,6 @@ void	bufinit(void);
 void	bwrite(int, char *, daddr_t, long);
 void	cacheino(struct ext2fs_dinode *, ino_t);
 int	changeino(ino_t, char *, ino_t);
-struct	fstab;
 int	chkrange(daddr_t, int);
 void	ckfini(int);
 int	ckinode(struct ext2fs_dinode *, struct inodesc *);
@@ -55,6 +54,8 @@ int	ftypeok(struct ext2fs_dinode *);
 void	getpathname(char *, size_t, ino_t, ino_t);
 void	inocleanup(void);
 void	inodirty(void);
+u_int64_t inosize(struct ext2fs_dinode *);
+void    inossize(struct ext2fs_dinode *, u_int64_t);
 int	linkup(ino_t, ino_t);
 int	makeentry(ino_t, ino_t, char *);
 void	pass1(void);
diff --git a/sbin/fsck_ext2fs/fsck.h b/sbin/fsck_ext2fs/fsck.h
index f01bb88b8d9..88a54cd1f6c 100644
--- a/sbin/fsck_ext2fs/fsck.h
+++ b/sbin/fsck_ext2fs/fsck.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fsck.h,v 1.8 2003/06/02 20:06:15 millert Exp $	*/
+/*	$OpenBSD: fsck.h,v 1.9 2005/04/30 13:56:16 niallo Exp $	*/
 /*	$NetBSD: fsck.h,v 1.1 1997/06/11 11:21:47 bouyer Exp $	*/
 
 /*
@@ -155,7 +155,7 @@ struct inoinfo {
 	ino_t	i_number;		/* inode number of this entry */
 	ino_t	i_parent;		/* inode number of parent */
 	ino_t	i_dotdot;		/* inode number of `..' */
-	size_t	i_isize;		/* size of inode */
+	u_int64_t	i_isize;		/* size of inode */
 	u_int	i_numblks;		/* size of block array in bytes */
 	daddr_t	i_blks[1];		/* actually longer */
 } **inphead, **inpsort;
diff --git a/sbin/fsck_ext2fs/inode.c b/sbin/fsck_ext2fs/inode.c
index 1b6fa1ac251..69c34bcfbc2 100644
--- a/sbin/fsck_ext2fs/inode.c
+++ b/sbin/fsck_ext2fs/inode.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: inode.c,v 1.14 2003/07/29 18:38:35 deraadt Exp $	*/
+/*	$OpenBSD: inode.c,v 1.15 2005/04/30 13:56:16 niallo Exp $	*/
 /*	$NetBSD: inode.c,v 1.8 2000/01/28 16:01:46 bouyer Exp $	*/
 
 /*
@@ -62,6 +62,53 @@
 static ino_t startinum;
 
 static int iblock(struct inodesc *, long, u_int64_t);
+static int setlarge(void);
+
+static int
+setlarge(void)
+{
+	if (sblock.e2fs.e2fs_rev < E2FS_REV1) {
+		pfatal("LARGE FILES UNSUPPORTED ON REVISION 0 FILESYSTEMS");
+		return 0;
+	}
+	if (!(sblock.e2fs.e2fs_features_rocompat & EXT2F_ROCOMPAT_LARGEFILE)) {
+		if (preen)
+			pwarn("SETTING LARGE FILE INDICATOR\n");
+		else if (!reply("SET LARGE FILE INDICATOR"))
+			return 0;
+		sblock.e2fs.e2fs_features_rocompat |= EXT2F_ROCOMPAT_LARGEFILE;
+		sbdirty();
+	}
+	return 1;
+}
+
+u_int64_t
+inosize(struct ext2fs_dinode *dp)
+{
+	u_int64_t size = fs2h32(dp->e2di_size);
+	
+	if ((fs2h16(dp->e2di_mode) & IFMT) == IFREG)
+		size |= (u_int64_t)fs2h32(dp->e2di_dacl) << 32;
+	if (size >= 0x80000000U)
+		 (void)setlarge();
+	 return size;
+}
+
+void
+inossize(struct ext2fs_dinode *dp, u_int64_t size)
+{
+	if ((fs2h16(dp->e2di_mode) & IFMT) == IFREG) {
+		dp->e2di_dacl = h2fs32(size >> 32);
+		if (size >= 0x80000000U)
+			if (!setlarge())
+				return;
+	} else if (size >= 0x80000000U) {
+		pfatal("TRYING TO SET FILESIZE TO %llu ON MODE %x FILE\n",
+		    (unsigned long long)size, fs2h16(dp->e2di_mode) & IFMT);
+		return;
+	}
+	dp->e2di_size = h2fs32(size);
+}
 
 int
 ckinode(struct ext2fs_dinode *dp, struct inodesc *idesc)
@@ -76,13 +123,13 @@ ckinode(struct ext2fs_dinode *dp, struct inodesc *idesc)
 	if (idesc->id_fix != IGNORE)
 		idesc->id_fix = DONTKNOW;
 	idesc->id_entryno = 0;
-	idesc->id_filesize = fs2h32(dp->e2di_size);
+	idesc->id_filesize = inosize(dp);
 	mode = fs2h16(dp->e2di_mode) & IFMT;
 	if (mode == IFBLK || mode == IFCHR || mode == IFIFO ||
-	    (mode == IFLNK && (fs2h32(dp->e2di_size) < EXT2_MAXSYMLINKLEN)))
+	    (mode == IFLNK && (inosize(dp) < EXT2_MAXSYMLINKLEN)))
 		return (KEEPON);
 	dino = *dp;
-	ndb = howmany(fs2h32(dino.e2di_size), sblock.e2fs_bsize);
+	ndb = howmany(inosize(&dino), sblock.e2fs_bsize);
 	for (ap = &dino.e2di_blocks[0]; ap < &dino.e2di_blocks[NDADDR];
 																ap++,ndb--) {
 		idesc->id_numfrags = 1;
@@ -95,7 +142,8 @@ ckinode(struct ext2fs_dinode *dp, struct inodesc *idesc)
 				    pathbuf);
 				if (reply("ADJUST LENGTH") == 1) {
 					dp = ginode(idesc->id_number);
-					dp->e2di_size = h2fs32((ap - &dino.e2di_blocks[0]) *
+					inossize(dp,
+					    (ap - &dino.e2di_blocks[0]) *
 					    sblock.e2fs_bsize);
 					printf(
 					    "YOU MUST RERUN FSCK AFTERWARDS\n");
@@ -114,7 +162,7 @@ ckinode(struct ext2fs_dinode *dp, struct inodesc *idesc)
 			return (ret);
 	}
 	idesc->id_numfrags = 1;
-	remsize = fs2h32(dino.e2di_size) - sblock.e2fs_bsize * NDADDR;
+	remsize = inosize(&dino) - sblock.e2fs_bsize * NDADDR;
 	sizepb = sblock.e2fs_bsize;
 	for (ap = &dino.e2di_blocks[NDADDR], n = 1; n <= NIADDR; ap++, n++) {
 		if (*ap) {
@@ -131,7 +179,7 @@ ckinode(struct ext2fs_dinode *dp, struct inodesc *idesc)
 				    pathbuf);
 				if (reply("ADJUST LENGTH") == 1) {
 					dp = ginode(idesc->id_number);
-					dp->e2di_size = h2fs32(fs2h32(dp->e2di_size) - remsize);
+					inossize(dp, inosize(dp) - remsize);
 					remsize = 0;
 					printf(
 					    "YOU MUST RERUN FSCK AFTERWARDS\n");
@@ -211,7 +259,7 @@ iblock(struct inodesc *idesc, long ilevel, u_int64_t isize)
 				    pathbuf);
 				if (reply("ADJUST LENGTH") == 1) {
 					dp = ginode(idesc->id_number);
-					dp->e2di_size = h2fs32(fs2h32(dp->e2di_size) - isize);
+					inossize(dp, inosize(dp) - isize);
 					isize = 0;
 					printf(
 					    "YOU MUST RERUN FSCK AFTERWARDS\n");
@@ -377,7 +425,7 @@ cacheino(struct ext2fs_dinode *dp, ino_t inumber)
 	struct inoinfo **inpp;
 	unsigned int blks;
 
-	blks = howmany(fs2h32(dp->e2di_size), sblock.e2fs_bsize);
+	blks = howmany(inosize(dp), sblock.e2fs_bsize);
 	if (blks > NDADDR)
 		blks = NDADDR + NIADDR;
 	inp = (struct inoinfo *)
@@ -394,7 +442,7 @@ cacheino(struct ext2fs_dinode *dp, ino_t inumber)
 		inp->i_parent = (ino_t)0;
 	inp->i_dotdot = (ino_t)0;
 	inp->i_number = inumber;
-	inp->i_isize = fs2h32(dp->e2di_size);
+	inp->i_isize = inosize(dp);
 	inp->i_numblks = blks * sizeof(daddr_t);
 	memcpy(&inp->i_blks[0], &dp->e2di_blocks[0], (size_t)inp->i_numblks);
 	if (inplast == listmax) {
@@ -522,7 +570,7 @@ pinode(ino_t ino)
 	printf("MODE=%o\n", fs2h16(dp->e2di_mode));
 	if (preen)
 		printf("%s: ", cdevname());
-	printf("SIZE=%u ", fs2h32(dp->e2di_size));
+	printf("SIZE=%llu ", (long long)inosize(dp));
 	t = fs2h32(dp->e2di_mtime);
 	p = ctime(&t);
 	printf("MTIME=%12.12s %4.4s ", &p[4], &p[20]);
@@ -598,7 +646,7 @@ allocino(ino_t request, int type)
 	dp->e2di_atime = h2fs32(t);
 	dp->e2di_mtime = dp->e2di_ctime = dp->e2di_atime;
 	dp->e2di_dtime = 0;
-	dp->e2di_size = h2fs32(sblock.e2fs_bsize);
+	inossize(dp, sblock.e2fs_bsize);
 	dp->e2di_nblock = h2fs32(btodb(sblock.e2fs_bsize));
 	n_files++;
 	inodirty();
diff --git a/sbin/fsck_ext2fs/pass1.c b/sbin/fsck_ext2fs/pass1.c
index 15805efc916..e32a79030eb 100644
--- a/sbin/fsck_ext2fs/pass1.c
+++ b/sbin/fsck_ext2fs/pass1.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pass1.c,v 1.10 2003/06/11 06:22:13 deraadt Exp $	*/
+/*	$OpenBSD: pass1.c,v 1.11 2005/04/30 13:56:16 niallo Exp $	*/
 /*	$NetBSD: pass1.c,v 1.9 2000/01/31 11:40:12 bouyer Exp $	*/
 
 /*
@@ -135,7 +135,7 @@ checkinode(ino_t inumber, struct inodesc *idesc)
 		if (mode == 0 && (
 			memcmp(dp->e2di_blocks, zino.e2di_blocks,
 			(NDADDR + NIADDR) * sizeof(u_int32_t)) ||
-		    dp->e2di_mode || dp->e2di_size)) {
+		    dp->e2di_mode || inosize(dp))) {
 			pfatal("PARTIALLY ALLOCATED INODE I=%u", inumber);
 			if (reply("CLEAR") == 1) {
 				dp = ginode(inumber);
@@ -175,24 +175,22 @@ checkinode(ino_t inumber, struct inodesc *idesc)
 			inodirty();
 		}
 	}
-	if (/* dp->di_size < 0 || */
-	    fs2h32(dp->e2di_size) + sblock.e2fs_bsize - 1 <
-		fs2h32(dp->e2di_size)) {
+	if (inosize(dp) + sblock.e2fs_bsize - 1 < inosize(dp)) {
 		if (debug)
-			printf("bad size %lu:", (u_long)fs2h32(dp->e2di_size));
+			printf("bad size %llu:", (unsigned long long)inosize(dp));
 		goto unknown;
 	}
 	if (!preen && mode == IFMT && reply("HOLD BAD BLOCK") == 1) {
 		dp = ginode(inumber);
-		dp->e2di_size = h2fs32(sblock.e2fs_bsize);
 		dp->e2di_mode = h2fs16(IFREG|0600);
+		inossize(dp, sblock.e2fs_bsize);
 		inodirty();
 	}
-	ndb = howmany(fs2h32(dp->e2di_size), sblock.e2fs_bsize);
+	ndb = howmany(inosize(dp), sblock.e2fs_bsize);
 	if (ndb < 0) {
 		if (debug)
-			printf("bad size %lu ndb %d:",
-			    (u_long)fs2h32(dp->e2di_size), ndb);
+			printf("bad size %llu ndb %d:",
+			    (unsigned long long)inosize(dp), ndb);
 		goto unknown;
 	}
 	if (mode == IFBLK || mode == IFCHR)
@@ -202,9 +200,9 @@ checkinode(ino_t inumber, struct inodesc *idesc)
 		 * Fake ndb value so direct/indirect block checks below
 		 * will detect any garbage after symlink string.
 		 */
-		if (fs2h32(dp->e2di_size) < EXT2_MAXSYMLINKLEN ||
+		if (inosize(dp) < EXT2_MAXSYMLINKLEN ||
 		    (EXT2_MAXSYMLINKLEN == 0 && dp->e2di_blocks == 0)) {
-			ndb = howmany(fs2h32(dp->e2di_size), sizeof(u_int32_t));
+			ndb = howmany(inosize(dp), sizeof(u_int32_t));
 			if (ndb > NDADDR) {
 				j = ndb - NDADDR;
 				for (ndb = 1; j > 1; j--)
@@ -250,7 +248,7 @@ checkinode(ino_t inumber, struct inodesc *idesc)
 		}
 	}
 	if (mode == IFDIR) {
-		if (dp->e2di_size == 0)
+		if (inosize(dp) == 0)
 			statemap[inumber] = DCLEAR;
 		else
 			statemap[inumber] = DSTATE;
diff --git a/sbin/fsck_ext2fs/pass2.c b/sbin/fsck_ext2fs/pass2.c
index 5dc7fcd5892..828726978f1 100644
--- a/sbin/fsck_ext2fs/pass2.c
+++ b/sbin/fsck_ext2fs/pass2.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pass2.c,v 1.10 2003/06/11 06:22:13 deraadt Exp $	*/
+/*	$OpenBSD: pass2.c,v 1.11 2005/04/30 13:56:16 niallo Exp $	*/
 /*	$NetBSD: pass2.c,v 1.6 2000/01/28 16:01:46 bouyer Exp $	*/
 
 /*
@@ -127,7 +127,7 @@ pass2(void)
 			inp->i_isize = roundup(MINDIRSIZE, sblock.e2fs_bsize);
 			if (reply("FIX") == 1) {
 				dp = ginode(inp->i_number);
-				dp->e2di_size = h2fs32(inp->i_isize);
+				inossize(dp, inp->i_isize);
 				inodirty();
 			}
 		} else if ((inp->i_isize & (sblock.e2fs_bsize - 1)) != 0) {
@@ -140,13 +140,13 @@ pass2(void)
 			inp->i_isize = roundup(inp->i_isize, sblock.e2fs_bsize);
 			if (preen || reply("ADJUST") == 1) {
 				dp = ginode(inp->i_number);
-				dp->e2di_size = h2fs32(inp->i_isize);
+				inossize(dp, inp->i_isize);
 				inodirty();
 			}
 		}
 		memset(&dino, 0, sizeof(struct ext2fs_dinode));
 		dino.e2di_mode = h2fs16(IFDIR);
-		dino.e2di_size = h2fs32(inp->i_isize);
+		inossize(&dino, inp->i_isize);
 		memcpy(&dino.e2di_blocks[0], &inp->i_blks[0], (size_t)inp->i_numblks);
 		curino.id_number = inp->i_number;
 		curino.id_parent = inp->i_parent;
diff --git a/sbin/fsck_ext2fs/pass4.c b/sbin/fsck_ext2fs/pass4.c
index 8cb0edff0ba..6c363d268c9 100644
--- a/sbin/fsck_ext2fs/pass4.c
+++ b/sbin/fsck_ext2fs/pass4.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pass4.c,v 1.6 2003/06/11 06:22:13 deraadt Exp $	*/
+/*	$OpenBSD: pass4.c,v 1.7 2005/04/30 13:56:16 niallo Exp $	*/
 /*	$NetBSD: pass4.c,v 1.2 1997/09/14 14:27:29 lukem Exp $	*/
 
 /*
@@ -84,7 +84,7 @@ pass4(void)
 
 		case DCLEAR:
 			dp = ginode(inumber);
-			if (dp->e2di_size == 0) {
+			if (inosize(dp) == 0) {
 				clri(&idesc, "ZERO LENGTH", 1);
 				break;
 			}
diff --git a/sbin/fsck_ext2fs/setup.c b/sbin/fsck_ext2fs/setup.c
index 5156cdf29d6..7a3767982bf 100644
--- a/sbin/fsck_ext2fs/setup.c
+++ b/sbin/fsck_ext2fs/setup.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: setup.c,v 1.12 2003/07/29 18:38:35 deraadt Exp $	*/
+/*	$OpenBSD: setup.c,v 1.13 2005/04/30 13:56:16 niallo Exp $	*/
 /*	$NetBSD: setup.c,v 1.1 1997/06/11 11:22:01 bouyer Exp $	*/
 
 /*
@@ -326,6 +326,9 @@ readsb(int listerr)
 	asblk.b_un.b_fs->e2fs_rgid = sblk.b_un.b_fs->e2fs_rgid;
 	asblk.b_un.b_fs->e2fs_block_group_nr =
 	    sblk.b_un.b_fs->e2fs_block_group_nr;
+	asblk.b_un.b_fs->e2fs_features_rocompat &= ~EXT2F_ROCOMPAT_LARGEFILE;
+	asblk.b_un.b_fs->e2fs_features_rocompat |=
+	    sblk.b_un.b_fs->e2fs_features_rocompat & EXT2F_ROCOMPAT_LARGEFILE;
 	if (sblock.e2fs.e2fs_rev > E2FS_REV0 &&
 	    ((sblock.e2fs.e2fs_features_incompat & ~EXT2F_INCOMPAT_SUPP) ||
 	    (sblock.e2fs.e2fs_features_rocompat & ~EXT2F_ROCOMPAT_SUPP))) {
-- 
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