Commit Graph

99 Commits

Author SHA1 Message Date
Xin LI
eb1c42c1f0 Avoid mixing cluster numbers and sector numbers. Makes code more readable.
Obtained from:	NetBSD
MFC after:	2 weeks
2019-09-15 19:41:54 +00:00
Xin LI
07282103f5 Correct overflow logic in fullpath().
Obtained from:	OpenBSD
MFC after:	3 days
2019-09-04 04:44:03 +00:00
Xin LI
cf955ebf6f Remove unneeded blank line. No functional change.
MFC after:	2 weeks
2019-08-30 06:06:12 +00:00
Xin LI
b770b08061 Comment boot block checks and perform additional sanity checks:
The following checks are now being enforced:

 - bpbBytesPerSec: only accept 512, 1024, 2048 and 4096.
 - bpbSecPerClust: only accept 1, 2, 4, 8, 16, 32, 64 and 128.
 - bpbResSectors: require non-zero.
 - bpbFATs: require non-zero.
 - bpbSectors: require zero for FAT32.
 - bpbFATsmall: require zero for FAT32.
 - bpbHugeSectors: require non-zero for FAT32.

Bail out if the BPB contained values that do not meet these requirements.

We also require FATsecs * FATsecs to not overflow 32-bit unsigned
integer.

Check for backup boot block was removed because the checker does not take
corrective action, and msdosfs driver ignores it too.
2019-08-26 06:41:17 +00:00
Xin LI
55d26365b1 Use calloc().
MFC after:	2 weeks
2019-08-19 05:24:42 +00:00
Xin LI
b9919ec960 Remove redundant check and wrong fix: fat.c checks already take care
about cluster chains.

Obtained from:	OpenBSD
MFC after:	2 weeks
2019-08-19 04:28:12 +00:00
Xin LI
0b253f2ba4 In ask(): override default option if any of alwaysyes/alwaysno/rdonly is
set.

MFC after:	2 weeks
2019-06-15 07:23:06 +00:00
Xin LI
1e3ffe6590 Blankspace. No actual code change.
MFC after:	2 weeks
2019-06-15 06:51:46 +00:00
Xin LI
bf6ed41692 Avoid out of boundary access when checking invalid long filenames.
Obtained from:	OpenBSD (dir.c,v 1.25)
MFC after:	3 days
2019-06-11 22:21:29 +00:00
Xin LI
669d33ef98 preen should work independently with alwaysyes and alwaysno.
PR:		238375
MFC after:	2 weeks
2019-06-07 01:38:51 +00:00
Xin LI
51a1c26a18 Don't increment cl after increment.
MFC after:	3 days
2019-06-04 07:02:20 +00:00
Xin LI
dad02d7d08 Don't cast result from malloc().
MFC after:	2 weeks
2019-04-15 06:33:05 +00:00
Xin LI
0e6eb62d96 Write string constant differently to improve readability.
Reported by:	rgrimes
Reviewed by:	rgrimes, emaste
MFC after:	13 days
Differential Revision:	https://reviews.freebsd.org/D19829
2019-04-06 03:42:15 +00:00
Xin LI
d325f3c243 Fix build.
MFC after:	2 weeks
X-MFC-With:	r345900
2019-04-05 02:37:10 +00:00
Xin LI
d78b6f1ee8 Implement checking of .' and ..' entries of subdirectory.
Reviewed by:		pfg
Obtained from:		Android b6ee08aadb%5E%21/
MFC after:		2 weeks
Differential Revision:	https://reviews.freebsd.org/D19824
2019-04-05 02:21:16 +00:00
Xin LI
fbf8a5605f Restore lfcl when LOSTDIR's chain was corrupted and overwritten
with invalid value.

Obtained from:	Android 4d6d6f8a36%5E%21/
MFC after:	2 weeks
2019-04-04 23:34:03 +00:00
Xin LI
2bf0ee64f9 Restore the ability of checking and fixing next free
cluster in FSINFO that was lost in r203872.

Obtained from:	NetBSD
MFC after:	2 weeks
2019-04-04 23:16:36 +00:00
Xin LI
f806eb62a4 Assert that q can't be NULL. 'empty' is always non-NULL when DIREMPTY
is set earlier.

MFC after:	1 month
2019-04-03 07:09:28 +00:00
Xin LI
9ace37176e Distinguish between lseek errors and read errores.
MFC after:	2 weeks
2019-03-28 18:20:47 +00:00
Xin LI
7f2b7ec93c Detect and handle invalid number of FATs
If the number of FATs field in the boot sector is zero, give
an appropriate error code.

Obtained from:	Android 6c29bbe8d5%5E%21/
MFC after:	2 weeks
2018-07-13 02:02:16 +00:00
Xin LI
48f3bd63b9 Revert Makefile@335696 that sneaked into the commit.
X-MFC with:	335696
MFC after:	2 weeks
2018-06-27 06:50:24 +00:00
Xin LI
6f0f107256 Detect exFAT filesystems and abort if found and tighten BPB sanity
check.

Obtained from:	Android https://android-review.googlesource.com/61827
MFC after:	2 weeks
2018-06-27 06:49:20 +00:00
Xin LI
f7a300540f Fix division by zero when reading boot block by postponing division
until it is necessary and after we validated bytes per sector is non-
zero.

Obtained from:	Android https://android-review.googlesource.com/c/platform/external/fsck_msdos/+/36362
MFC after:	2 weeks
2018-06-26 06:18:59 +00:00
Xin LI
b7d6282aae Don't bail out when we find primary and secondary bootblocks miscompare.
We do not have code to fix this situation, and the mismatch does not
prevent the kernel driver from consuming the file system, and some factory
formatted SD cards seem to have a garbage backup block.

This makes the code match to its comments (replacing pfatal with pwarn).

Inspired by:	NetBSD r1.13
Inspired by:	b47b16353f
MFC after:	2 weeks
2018-06-22 16:18:19 +00:00
Xin LI
3e855e9c21 Don't bail out from the check if readboot() returns !FSFATAL.
This can happen when the fsinfo signature is invalid, and the
user have choose to fix it, in which case the code would return
FSBOOTMOD (not FSOK but not FSFATAL either).

All other (fatal) cases would return FSFATAL.

Obtained from:	Android Open Source Project
Obtained from:	d8775a29ea
MFC after:	2 weeks
2018-04-30 05:57:55 +00:00
Xin LI
aa031ef4a3 Prevent OOB access on corrupted msdos directories.
Submitted by:	Veo Zhang <veo live com>
MFC after:	2 weeks
2017-11-30 08:28:17 +00:00
Pedro F. Giffuni
1de7b4b805 various: general adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.
2017-11-27 15:37:16 +00:00
Bryan Drewery
ea825d0274 DIRDEPS_BUILD: Update dependencies.
Sponsored by:	Dell EMC Isilon
2017-10-31 00:07:04 +00:00
Enji Cooper
22289a8c3d sbin: normalize paths using SRCTOP-relative paths or :H when possible
This simplifies make logic/output

MFC after:	1 month
Sponsored by:	Dell EMC Isilon
2017-03-04 11:33:01 +00:00
Sevan Janiyan
4cbf025741 Mention the version of NetBSD the utility originated from.
PR:		212476
Approved by:	bcr (mentor)
MFC after:	4 days
Differential Revision:	https://reviews.freebsd.org/D8105
2016-10-02 23:40:17 +00:00
Pedro F. Giffuni
dd3f00cbaf fsck_msdosfs: Adjust a check.
The on-disk FAT array does not include anything before CLUST_FIRST,
compensate in size check.

Obtained from:	NetBSD (CVS Rev. 1.20)
MFC after:	2 weeks
2016-05-04 22:27:22 +00:00
Marcelo Araujo
091ea4a091 Use macro MAX() from sys/param.h.
MFC after:	2 weeks.
2016-04-22 03:32:14 +00:00
Pedro F. Giffuni
f3858ada3e fsck_msdosfs: use NULL instead of zero for pointers. 2016-04-19 19:08:37 +00:00
Glen Barber
876d357fa7 MFH
Sponsored by:	The FreeBSD Foundation
2016-04-11 15:24:59 +00:00
Pedro F. Giffuni
33bed970fa fsck_msdosfs(8): Optimimize memsets
Obtained from:	NetBSD (bin/50908)
MFC after:	2 weeks
2016-04-06 15:28:26 +00:00
Glen Barber
406d87b1c3 Explicitly add more files to the 'runtime' package.
Sponsored by:	The FreeBSD Foundation
2016-02-09 20:19:31 +00:00
Simon J. Gerraty
ccfb965433 Add META_MODE support.
Off by default, build behaves normally.
WITH_META_MODE we get auto objdir creation, the ability to
start build from anywhere in the tree.

Still need to add real targets under targets/ to build packages.

Differential Revision:       D2796
Reviewed by: brooks imp
2015-06-13 19:20:56 +00:00
Simon J. Gerraty
44d314f704 dirdeps.mk now sets DEP_RELDIR 2015-06-08 23:35:17 +00:00
Simon J. Gerraty
9268022b74 Merge from head@274682 2014-11-19 01:07:58 +00:00
Doug Ambrisko
db0b8e10a7 Make UEFI booting of 4Kn disks work:
-	convert boot1.efi to corrrectly calculate the lba for what the
	media reports and convert the size based on what FreeBSD uses.
	The existing code would use the 512 byte lba and convert the
	size using 4K byte size.
      -	make fsck_msdosfs read the boot block as 4K so the read doesn't
	fail on a 4Kn drive since FreeBSD will error out parition reads
	of a block.  Make the bpbBytesPerSec check a multiple of 512 since
	it can be 512 or 4K depending on the disk.  This allows fsck to
	pass checking the EFI partition on a 4Kn disk.

To create the EFI file system I used:
	newfs_msdos -F 32 -S 4096 -c 1 -m 0xf8 <partition>
This works for booting 512 and 4Kn disks.

Caveat is that loader.efi cannot read the 4Kn EFI partition.  This isn't
critical right now since boot1.efi will read loader.efi from the ufs
partition.  It looks like loader.efi can be fixed via making some of the
512 bytes reads more flexible.  loader.efi doesn't have trouble reading
the ufs partition.  This is probably a simple fix.

I now have FreeBSD installed on a system with 4Kn drives and tested the
same code works on 512.

MFC after:	1 week
2014-10-30 15:52:01 +00:00
Simon J. Gerraty
ee7b0571c2 Merge head from 7/28 2014-08-19 06:50:54 +00:00
Pedro F. Giffuni
f07b643c5c newfs_msdosfs: Respect FSFIXFAT
Fix some whitespace issues while here.

Obtained from:	NetBSD (rev. 1.9)
MFC after:	3 days
2014-07-14 21:32:40 +00:00
Pedro F. Giffuni
ea4cbe3197 msdosfs: Assorted fixes from other BSDs.
When truncating cluster chains fix the length of the cluster head.
http://marc.info/?t=140304310700005&r=1&w=2

Avoid infinite loops in cluster chain linked lists.
http://marc.info/?l=openbsd-tech&m=140275150804337&w=2

Avoid off-by-one on FAT12 filesystems.
http://marc.info/?l=openbsd-tech&m=140234174104724&w=2

Obtained from:	NetBSD (from OpenBSD)
MFC after:	1 week
2014-07-14 20:58:02 +00:00
Pedro F. Giffuni
21f0d83866 fsck_msdosfs: be a bit more permissive
The free space value in the FSInfo block is merely unitialized when it is
0xffffffff. This fixes a bug found in NetBSD.

It must be noted that we never supported all the checks that NetBSD does
as some of them would cause failures with a freshly created FAT32
from MS-Windows.

While here, bring some space fixes.

Obtained from:	NetBSD (rev. 1.22)
MFC after:	3 days
2014-07-14 20:17:09 +00:00
Pedro F. Giffuni
2b9fea6ca5 Minor (mostly cosmetic) cleanups
Several whitespace fixes
convert *rootDir from external to static.

Obtained from:	NetBSD, OpenBSD (partial)
MFC after:	3 days
2014-07-14 19:16:49 +00:00
Simon J. Gerraty
fae50821ae Updated dependencies 2014-05-16 14:09:51 +00:00
Simon J. Gerraty
76b28ad6ab Updated dependencies 2014-05-10 05:16:28 +00:00
Simon J. Gerraty
7cf3a1c6b2 Updated dependencies 2013-03-11 17:21:52 +00:00
Simon J. Gerraty
f5f7c05209 Updated dependencies 2013-02-16 01:23:54 +00:00
Simon J. Gerraty
23090366f7 Sync from head 2012-11-04 02:52:03 +00:00