David van Moolenbroek 1311233cfb libminixfs: keep track of block usage
This patch changes the libminixfs API and implementation such that the
library is at all times aware of how many total and used blocks there
are in the file system.  This removes the last upcall of libminixfs
into file systems (fs_blockstats).  In the process, make this part of
the libminixfs API a little prettier and more robust.  Change file
systems accordingly.  Since this change only adds to MFS being unable
to deal with zones and blocks having different sizes, fail to mount
such file systems immediately rather than triggering an assert later.

Change-Id: I078e589c7e1be1fa691cf391bf5dfddd1baf2c86
2015-08-14 18:39:21 +00:00

23 lines
470 B
C

#ifndef __MFS_GLO_H__
#define __MFS_GLO_H__
/* EXTERN should be extern except for the table file */
#ifdef _TABLE
#undef EXTERN
#define EXTERN
#endif
/* The following variables are used for returning results to the caller. */
EXTERN int err_code; /* temporary storage for error number */
EXTERN int cch[NR_INODES];
EXTERN dev_t fs_dev; /* The device that is handled by this FS proc.
*/
EXTERN zone_t used_zones;
extern struct fsdriver mfs_table;
#endif