MFC r344555 (sobomax): makefs: Improve error handling

Bail out if one of the files scheduled to go to the FS image we are
making cannot be read (e.g. EPERM). Previous behaviour of issuing a
warning

MFC r344555 (sobomax): makefs: Improve error handling

Bail out if one of the files scheduled to go to the FS image we are
making cannot be read (e.g. EPERM). Previous behaviour of issuing a
warning but still proceeeding and returning success was definitely not
correct: masking out error condition as well as making a slighly
inconsistent FS where attempt to access the file in question ends up in
EBADF. (More details in review D18584.)

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MFC r351396: makefs: diff reduction to sys/fs/msdosfs

No functional change.

MFC r351347: makefs: Verify that the BPB media descriptor and FAT ID match

From r322982 in sys/fs/msdosfs.

makefs: add msdosfs (FAT) support

MFC r351232: makefs.8: expand description of image size

Submitted by: ryan_freqlabs.com, Siva Mahadevan

MFC r351273: makefs: add msdosfs (FAT) support

Add FAT su

makefs: add msdosfs (FAT) support

MFC r351232: makefs.8: expand description of image size

Submitted by: ryan_freqlabs.com, Siva Mahadevan

MFC r351273: makefs: add msdosfs (FAT) support

Add FAT support to makefs by copying some files from sys/fs/msdosfs/ and
updating others with changes from NetBSD.

The six files copied from sys/fs/msdosfs at r348251 and modified are:
denode.h direntry.h fat.h msdosfs_fat.c msdosfs_lookup.c msdosfsmount.h

I would prefer to avoid the duplication, but reluctance to doing so was
expressed in a previous review (D11197); for now copy the files and
revisit in the future.

Submitted by: Siva Mahadevan

MFC r351275: makefs: avoid "dereferencing 'void *' pointer" warnings

On GCC 4.2.1 archs

MFC r351302: makefs.8: update history

- ported to FreeBSD and first appeared in 8.0
- Christos Zoulas added the FAT support that I imported

MFC r351319: makefs: use `char *` not `void *` for buf b_data, drop casts in msdos

(The kernel uses caddr_t.)

Suggested by: cem

MFC r351415 (delphij): Properly update FSInfo block after generation.

After populating the filesystem, write a FSInfo block with
proper information.

Sponsored by: The FreeBSD Foundation

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MFC r351230: makefs.8: style updates from igor

Sponsored by: The FreeBSD Foundation

MFC r345281: makefs: Fix "time" mtree attribute handling

When processing mtree(5) MANIFEST files, makefs(8) previously threw an
error if it encountered an entry whose "time" attribute contained a
no

MFC r345281: makefs: Fix "time" mtree attribute handling

When processing mtree(5) MANIFEST files, makefs(8) previously threw an
error if it encountered an entry whose "time" attribute contained a
non-zero subsecond component (e.g. time=1551620152.987220000).

Update the handling logic to properly assign the subsecond component if
built with nanosecond support, or silently discard it otherwise.

Also, re-enable the time attribute for the kyua tests.

PR: 194703
Submitted by: mhorne

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