Re: [MiNT] Easymint filesystem checks

[Jo Even Skarstein <joska@online.no>]

On Thu, 2011-01-13 at 12:37 +0100, Jo Even Skarstein wrote:
> On Wed, 2011-01-12 at 17:02 -0500, Jeff Mitchell wrote:
> > 	I woudl assume the norm is to go through fstab (or hd driver) and 
> > fsck all the devices with a known fs type; if its an unknwon fs, skip it 
> > and do not consider it an error?
> 
> I made a small test-program last night (in C). It does a
> Dcntl(FS_INFO...) on all drives, partition types are correctly
> idenfified. It should be easy to run the correct fsck on each partition.

Here's a tiny program that checks the filesystem-type on each partition
and runs e2fsck.ttp on each ext2-partition. No fstab is needed, just
this program and e2fsck. It's a pretty crude hack, but illustrates how
this can be done. It doesn't check the return value of e2fsck, so
booting will continue even if an unrecoverable error is found.

I compiled this with PureC, and it doesn't use any libraries except the
GEMDOS bindings. If somebody wants to make something useful out of this
please go ahead :)

Jo Even

#include <tos.h>

#define FS_INFO	0xf100

struct fs_info
{
	char	name [32];	/* name of the xfs */
	long	version;	/* upper word: major version; lower word: minor version */
	long	type;		/* upper word: major type; lower word: minor type */
	char	type_asc[32];	/* human readable version of type */
};

#define FAT		1
#define VFAT	3
#define EXT2	5

int main(int argc, const char *argv[])
{
	struct fs_info info;
	long drive_bits = Dsetdrv(Dgetdrv()) & ~3; /* Don't check floppies */
	int i;
	char drv[] = "C:\\";

	Cconws("\x1bpCheck filesystems\x1bq\n\r");

	for (i = 0; i < 32; i++)
	{
		if (drive_bits & (1L << i))
		{
			drv[0] = 'a' + i;
			Dcntl(FS_INFO, drv, (long) &info);

			Cconws("Drive "); Cconws(drv); Cconws(" "); Cconws(info.type_asc); Cconws("\n\r");

			switch ((short int)(info.type >> 16))
			{
				case FAT:
				case VFAT:
					break;

				case EXT2:
				{
					static char cmd[] = {127,0};
					static char env[32] = {'A','R','G','V','=',0,'-','p',0,'-','C',0,'-',0,'x',':',0,0};
					long ret;

					env[14] = drv[0];
					ret = Pexec(0, "e2fsck.ttp", cmd, env);
					break;
				}
			}
		}
	}

	return 0;
}