minix/servers/mfs/type.h

#ifndef __MFS_TYPE_H__
#define __MFS_TYPE_H__

#include <minix/libminixfs.h>

/* Declaration of the V2 inode as it is on the disk (not in core). */
typedef struct {		/* V2.x disk inode */
  u16_t d2_mode;		/* file type, protection, etc. */
  u16_t d2_nlinks;		/* how many links to this file. HACK! */
  i16_t d2_uid;			/* user id of the file's owner. */
  u16_t d2_gid;			/* group number HACK! */
  i32_t d2_size;		/* current file size in bytes */
  i32_t d2_atime;		/* when was file data last accessed */
  i32_t d2_mtime;		/* when was file data last changed */
  i32_t d2_ctime;		/* when was inode data last changed */
  zone_t d2_zone[V2_NR_TZONES];	/* block nums for direct, ind, and dbl ind */
} d2_inode;

#endif
Clean up MFS a bit: - Remove unused includes. - Add include guards to headers. - Use unsigned variables in case they're never going to hold a negative value. This causes GCC's complaints to disappear and should make flexelint a lot happier, too. - Make functions private when they're used only within a module. - Remove unused variables. - Add casts where appropriate. 2010-06-01 14:35:33 +02:00			`#ifndef __MFS_TYPE_H__`
			`#define __MFS_TYPE_H__`

Move primary cache code to libminixfs. Add primary cache management feature to libminixfs as mfs and ext2 currently do separately, remove cache code from mfs and ext2, and make them use the libminixfs interface. This makes all fields of the buf struct private to libminixfs and FS clients aren't supposed to access them at all. Only the opaque 'void *data' field (the FS block contents, used to be called bp) is to be accessed by the FS client. The main purpose is to implement the interface to the 2ndary vm cache just once, get rid of some code duplication, and add a little abstraction to reduce the code inertia of the whole caching business. Some minor sanity checking and prohibition done by mfs in this code as removed from the generic primary cache code as a result: - checking all inodes are not in use when allocating/resizing the cache - checking readonly filesystems aren't written to - checking the superblock isn't written to on mounted filesystems The minixfslib code relies on fs_blockstats() in the client filesystem to return some FS usage information. 2012-10-16 17:40:39 +02:00			`#include <minix/libminixfs.h>`

Initial revision 2005-04-21 16:53:53 +02:00			`/* Declaration of the V2 inode as it is on the disk (not in core). */`
			`typedef struct { /* V2.x disk inode */`
inodes - using types with known size - fixes a problem in inodes truct definitions. The original definitions use posix types. These types don't have well defined size. Therefore when compiling mkfs on a different system natively the inodes sizes do not match. This patch replaces the posix types with interger types of the same size and signedness as the original types in use. 2009-11-06 09:55:07 +01:00			`u16_t d2_mode; /* file type, protection, etc. */`
Initial revision 2005-04-21 16:53:53 +02:00			`u16_t d2_nlinks; /* how many links to this file. HACK! */`
inodes - using types with known size - fixes a problem in inodes truct definitions. The original definitions use posix types. These types don't have well defined size. Therefore when compiling mkfs on a different system natively the inodes sizes do not match. This patch replaces the posix types with interger types of the same size and signedness as the original types in use. 2009-11-06 09:55:07 +01:00			`i16_t d2_uid; /* user id of the file's owner. */`
Initial revision 2005-04-21 16:53:53 +02:00			`u16_t d2_gid; /* group number HACK! */`
inodes - using types with known size - fixes a problem in inodes truct definitions. The original definitions use posix types. These types don't have well defined size. Therefore when compiling mkfs on a different system natively the inodes sizes do not match. This patch replaces the posix types with interger types of the same size and signedness as the original types in use. 2009-11-06 09:55:07 +01:00			`i32_t d2_size; /* current file size in bytes */`
			`i32_t d2_atime; /* when was file data last accessed */`
			`i32_t d2_mtime; /* when was file data last changed */`
			`i32_t d2_ctime; /* when was inode data last changed */`
Initial revision 2005-04-21 16:53:53 +02:00			`zone_t d2_zone[V2_NR_TZONES]; /* block nums for direct, ind, and dbl ind */`
			`} d2_inode;`
Basic VM and other minor improvements. Not complete, probably not fully debugged or optimized. 2008-11-19 13:26:10 +01:00
Clean up MFS a bit: - Remove unused includes. - Add include guards to headers. - Use unsigned variables in case they're never going to hold a negative value. This causes GCC's complaints to disappear and should make flexelint a lot happier, too. - Make functions private when they're used only within a module. - Remove unused variables. - Add casts where appropriate. 2010-06-01 14:35:33 +02:00			`#endif`