Documentation/filesystems/vfat.rst

10   mount -t vfat /dev/fd0 /mnt
42 		**-20**: If current process is in group of file's group ID,
45 		**-2**: Other users can change timestamp.
69 	There is also an option of doing UTF-8 translations
76 	UTF-8 is the filesystem safe version of Unicode that
79 	If 'uni_xlate' gets set, UTF-8 gets disabled.
141 	Interpret timestamps as UTC rather than local time.
143 	between local time (as used by Windows on FAT) and UTC
147 	local time.
150 	Set offset for conversion of timestamps from local time
153 	Linux. This is useful when time zone set in ``sys_tz`` is
154 	not the time zone used by the filesystem. Note that this
155 	option still does not provide correct time stamps in all
156 	cases in presence of DST - time stamps in a different DST
176 	FAT has the ATTR_RO (read-only) attribute. On Windows,
181 	If you want to use ATTR_RO as read-only flag even for
184 **errors=panic|continue|remount-ro**
187 	read-only mode (default behavior).
192 	and sparse/thinly-provisioned LUNs.
199 		*inodes* by *i_logstart* which is used by the nfs-related code to
200 		improve look-ups. Full file operations (read/write) over NFS is
205 		on the on-disk location of a file in the MS-DOS directory entry.
213 	To maintain backward compatibility, ``'-o nfs'`` is also accepted,
227 The fallocated region of file is discarded at umount/evict time
245 - vfat_valid_longname does not properly checked reserved names.
246 - When a volume name is the same as a directory name in the root
249 - autoconv option does not work correctly.
274 :-).  The significant change has been the addition of long file names.
286 		unsigned char ctime_ms;		// Creation time, milliseconds
287 		unsigned char ctime[2];		// Creation time
291                 unsigned char time[2];          // time stamp
313 entries.)  I call these extra entries slots.  Basically, a slot is a
318 extended slot directory entries as the file name.
320 The C structure for a slot directory entry follows::
322         struct slot { // Up to 13 characters of a long name
323                 unsigned char id;               // sequence number for slot
339         1) The attribute byte for a slot directory entry is always set
341            attributes of "hidden", "system", "read-only", and "volume
352 verify that a slot does in fact belong to an 8.3 directory entry by
357            slot has an id which marks its order in the extended file
363                 <slot #3, id = 0x43, characters = "h is long">
364                 <slot #2, id = 0x02, characters = "xtension whic">
365                 <slot #1, id = 0x01, characters = "My Big File.E">
370 		     are numbered from 1 to N.  The Nth slot is ``or'ed`` with
373         2) Checksum.  Each slot has an alias_checksum value.  The
382 	3) If there is free space in the final slot, a Unicode ``NULL (0x0000)``
384 	   characters in the final slot are set to Unicode 0xFFFF.
387 character takes either two or four bytes, UTF-16LE encoded.