Author: delphij
Date: Tue Feb 7 21:56:58 2012
New Revision: 231162
URL: http://svn.freebsd.org/changeset/base/231162
Log:
MFC r227454:
Use __packed to prevent alignment from taking place, which otherwise may
change the on-disk format in an incompatible way. Without this change,
msdosfs created on FreeBSD/arm would not be mountable.
PR: bin/162486
Submitted by: Ian Lepore <freebsd damnhippie dyndns org>
Reported by: Mattia Rossi <mrossi at swin.edu.au>
Modified:
stable/8/sbin/newfs_msdos/newfs_msdos.c
Directory Properties:
stable/8/sbin/newfs_msdos/ (props changed)
Changes in other areas also in this revision:
Modified:
stable/9/sbin/newfs_msdos/newfs_msdos.c
Directory Properties:
stable/9/sbin/newfs_msdos/ (props changed)
Modified: stable/8/sbin/newfs_msdos/newfs_msdos.c
==============================================================================
--- stable/8/sbin/newfs_msdos/newfs_msdos.c Tue Feb 7 20:54:44 2012
(r231161)
+++ stable/8/sbin/newfs_msdos/newfs_msdos.c Tue Feb 7 21:56:58 2012
(r231162)
@@ -99,7 +99,7 @@ static const char rcsid[] =
struct bs {
u_int8_t bsJump[3]; /* bootstrap entry point */
u_int8_t bsOemName[8]; /* OEM name and version */
-};
+} __packed;
struct bsbpb {
u_int8_t bpbBytesPerSec[2]; /* bytes per sector */
@@ -114,7 +114,7 @@ struct bsbpb {
u_int8_t bpbHeads[2]; /* drive heads */
u_int8_t bpbHiddenSecs[4]; /* hidden sectors */
u_int8_t bpbHugeSectors[4]; /* big total sectors */
-};
+} __packed;
struct bsxbpb {
u_int8_t bpbBigFATsecs[4]; /* big sectors per FAT */
@@ -124,7 +124,7 @@ struct bsxbpb {
u_int8_t bpbFSInfo[2]; /* file system info sector */
u_int8_t bpbBackup[2]; /* backup boot sector */
u_int8_t bpbReserved[12]; /* reserved */
-};
+} __packed;
struct bsx {
u_int8_t exDriveNumber; /* drive number */
@@ -133,7 +133,7 @@ struct bsx {
u_int8_t exVolumeID[4]; /* volume ID number */
u_int8_t exVolumeLabel[11]; /* volume label */
u_int8_t exFileSysType[8]; /* file system type */
-};
+} __packed;
struct de {
u_int8_t deName[11]; /* name and extension */
@@ -143,7 +143,7 @@ struct de {
u_int8_t deMDate[2]; /* creation date */
u_int8_t deStartCluster[2]; /* starting cluster */
u_int8_t deFileSize[4]; /* size */
-};
+} __packed;
struct bpb {
u_int bpbBytesPerSec; /* bytes per sector */
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