[ECOS] Filesystem get/setinfo

Savin Zlobec savin.zlobec@email.si
Mon Oct 20 18:25:00 GMT 2003

On Mon, 20 Oct 2003 at 19:07:19, Nick Garnett wrote:

> Savin Zlobec <savin@elatec.si> writes:
> > I need to write some filesystem specific functions.
> > The get/setinfo calls seem to be the right way to do this,
> > but I can't find any functions to access them from my application.
> > 
> > The following functions would do the trick for me:
> > 
> > int cyg_fs_getinfo(const char *path, int key, void *buf, int len);
> > int cyg_fs_setinfo(const char *path, int key, void *buf, int len);
> > int cyg_fs_fgetinfo(int fd, int key, void *buf, int len);
> > int cyg_fs_fsetinfo(int fd, int key, void *buf. int len);
> > 
> > Or is there any way to do this already without accessing internal
> > structures?
> For filesystems you should be using ioctl() for these sorts of
> out-of-band control operations. That's what it's there for, and more
> than likely there is already a code defined for what you want to do.

I could work with ioctl, but if the desired operation is filesystem
oriented (as opposed to file oriented), then I would need to open a
file just to get a file descriptor for use with ioctl.
> What do you need these functions for?

Currently I need fs info like total/free/used sectors count,
status flags (if it was cleanly unmounted and if there were any IO errors).
Later I may need some sort of special access to reserved sectors... 


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