You would need to mount with -t vfat. That is how it the system knows
that the file system is vfat.
It seems like you should be able to omit the file system type when
mounting and let the system figure out the file system type, but that
does not appear to be supported.
On 2/12/2024 2:30 PM, Saurav Pal wrote:
Hi Alan,
Thanks for the reply. I had gone through that global array but I couldn't
find what I was looking for.
In a different phrasing, what I don't understand is how is it detected
which file system was used to format a storage device.
Like, let's say I have a HDD in my PC formatted with VFAT, and if I use it
with NuttX, how will it detect VFAT is being used?
Magic numbers are unique for FSs, but I have not seen / missed where they
are being stored on the disk for identification.
Regards,
SP
On Tue, 13 Feb, 2024, 01:42 Alan C. Assis, <acas...@gmail.com> wrote:
Hi Saurav,
Please take a look at "static const struct fsmap_t g_bdfsmap[]" in the file
nuttx/fs/mount/fs_mount.c
You will figure-out how the "magic" happens.
Best Regards,
Alan
On Mon, Feb 12, 2024 at 9:20 AM Saurav Pal <resyfer....@gmail.com> wrote:
Hi all,
I am trying to write some docs for VFS in NuttX, but there's one thing
I've
been stumbling on for some time.
How are the file systems detected from the storage devices? For example,
if
I have a storage device which has been formatted using VFAT...after (say)
power on, how does NuttX detect that vfat was used to format the storage
device?
From what I can see, NuttX does not have a "superblock" concept
explicitly
defined, nor does it seem to require the file systems to store magic
numbers in the disk in any way.
Thanks in advance.
Regards,
SP
