How to get statistics of the whole file system?
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FreddieChopin commented
I'm wondering whether there is a way to obtain file system statistics, most notably the size of the file system and amount of free space (or amount of used space, doesn't matter)? Something analogous to http://man7.org/linux/man-pages/man3/statvfs.3.html in POSIX and http://elm-chan.org/fsw/ff/doc/getfree.html from FatFs?
Maybe that's the info available in ufat_bpb
as fat_size
and fat_count
?
Thanks in advance!
dlbeer commented
On Sun, Jan 13, 2019 at 07:39:41AM -0800, Freddie Chopin wrote:
I'm wondering whether there is a way to obtain file system statistics, most notably the size of the file system and amount of free space (or amount of used space, doesn't matter)? Something analogous to http://man7.org/linux/man-pages/man3/statvfs.3.html in POSIX and http://elm-chan.org/fsw/ff/doc/getfree.html from FatFs?
Maybe that's the info available in `ufat_bpb` as `fat_size` and `fat_count`?
Thanks in advance!
Hi Freddie,
There's nothing implemented, but the simplest way to accomplish this
would be to read over the FAT and count the number of free clusters. If
you need a function like this, I'd suggest basing it on the
alloc_cluster() function in ufat.c, with the behaviour for each free
cluster entry changed to increment a count instead of exiting early.
Cheers,
Daniel
…--
Daniel Beer <dlbeer@gmail.com> http://dlbeer.co.nz/
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