sanchayanmaity/minix
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
minix/servers/mfs/glo.h

54 lines
1.3 KiB
C
Raw Normal View History

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_GLO_H__
#define __MFS_GLO_H__
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
/* EXTERN should be extern except for the table file */
#ifdef _TABLE
#undef EXTERN
#define EXTERN
#endif
- Introduce support for sticky bit. - Revise VFS-FS protocol and update VFS/MFS/ISOFS accordingly. - Clean up MFS by removing old, dead code (backwards compatibility is broken by the new VFS-FS protocol, anyway) and rewrite other parts. Also, make sure all functions have proper banners and prototypes. - VFS should always provide a (syntactically) valid path to the FS; no need for the FS to do sanity checks when leaving/entering mount points. - Fix several bugs in MFS: - Several path lookup bugs in MFS. - A link can be too big for the path buffer. - A mountpoint can become inaccessible when the creation of a new inode fails, because the inode already exists and is a mountpoint. - Introduce support for supplemental groups. - Add test 46 to test supplemental group functionality (and removed obsolete suppl. tests from test 2). - Clean up VFS (not everything is done yet). - ISOFS now opens device read-only. This makes the -r flag in the mount command unnecessary (but will still report to be mounted read-write). - Introduce PipeFS. PipeFS is a new FS that handles all anonymous and named pipes. However, named pipes still reside on the (M)FS, as they are part of the file system on disk. To make this work VFS now has a concept of 'mapped' inodes, which causes read, write, truncate and stat requests to be redirected to the mapped FS, and all other requests to the original FS.
2009-12-20 21:27:14 +01:00
#include <minix/vfsif.h>
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
/* The following variables are used for returning results to the caller. */
EXTERN int err_code; /* temporary storage for error number */
EXTERN int rdwt_err; /* status of last disk i/o request */
EXTERN int cch[NR_INODES];
extern char dot1[2]; /* dot1 (&dot1[0]) and dot2 (&dot2[0]) have a special */
extern char dot2[3]; /* meaning to search_dir: no access permission check. */
extern _PROTOTYPE (int (*fs_call_vec[]), (void) ); /* fs call table */
EXTERN message fs_m_in;
EXTERN message fs_m_out;
- Introduce support for sticky bit. - Revise VFS-FS protocol and update VFS/MFS/ISOFS accordingly. - Clean up MFS by removing old, dead code (backwards compatibility is broken by the new VFS-FS protocol, anyway) and rewrite other parts. Also, make sure all functions have proper banners and prototypes. - VFS should always provide a (syntactically) valid path to the FS; no need for the FS to do sanity checks when leaving/entering mount points. - Fix several bugs in MFS: - Several path lookup bugs in MFS. - A link can be too big for the path buffer. - A mountpoint can become inaccessible when the creation of a new inode fails, because the inode already exists and is a mountpoint. - Introduce support for supplemental groups. - Add test 46 to test supplemental group functionality (and removed obsolete suppl. tests from test 2). - Clean up VFS (not everything is done yet). - ISOFS now opens device read-only. This makes the -r flag in the mount command unnecessary (but will still report to be mounted read-write). - Introduce PipeFS. PipeFS is a new FS that handles all anonymous and named pipes. However, named pipes still reside on the (M)FS, as they are part of the file system on disk. To make this work VFS now has a concept of 'mapped' inodes, which causes read, write, truncate and stat requests to be redirected to the mapped FS, and all other requests to the original FS.
2009-12-20 21:27:14 +01:00
EXTERN vfs_ucred_t credentials;
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
EXTERN uid_t caller_uid;
EXTERN gid_t caller_gid;
EXTERN int req_nr;
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
EXTERN endpoint_t SELF_E;
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
Fix off-by-one errors and increase PATH_MAX to 1024 In some places it was assumed that PATH_MAX does not include a terminating null character. Increases PATH_MAX to 1024 to get in sync with NetBSD. Required some rewriting in AVFS to keep memory usage low (the stack in use by a thread is very small).
2011-09-12 11:00:24 +02:00
EXTERN char user_path[PATH_MAX]; /* pathname to be processed */
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
Added new interface to VFS.
2007-08-07 14:38:35 +02:00
EXTERN dev_t fs_dev; /* The device that is handled by this FS proc.
*/
EXTERN char fs_dev_label[16]; /* Name of the device driver that is handled
* by this FS proc.
*/
- delete unused .h files - slight code cleanup - neater exit procedure: exit when unmount message received and kill signal (from RS 'down' or reboot/shutdown) received (speed up unmount, but don't confuse VFS by exiting before/during unmount msg)
2009-04-27 18:13:51 +02:00
EXTERN int unmountdone;
EXTERN int exitsignaled;
Merge of VFS by Balasz Gerofi with Minix trunk.
2006-10-25 15:40:36 +02:00
Basic VM and other minor improvements. Not complete, probably not fully debugged or optimized.
2008-11-19 13:26:10 +01:00
/* our block size. */
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
EXTERN unsigned int fs_block_size;
Basic VM and other minor improvements. Not complete, probably not fully debugged or optimized.
2008-11-19 13:26:10 +01:00
/* Buffer cache. */
secondary cache feature in vm. A new call to vm lets processes yield a part of their memory to vm, together with an id, getting newly allocated memory in return. vm is allowed to forget about it if it runs out of memory. processes can ask for it back using the same id. (These two operations are normally combined in a single call.) It can be used as a as-big-as-memory-will-allow block cache for filesystems, which is how mfs now uses it.
2010-05-05 13:35:04 +02:00
EXTERN struct buf *buf;
EXTERN struct buf **buf_hash; /* the buffer hash table */
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
EXTERN unsigned int nr_bufs;
secondary cache feature in vm. A new call to vm lets processes yield a part of their memory to vm, together with an id, getting newly allocated memory in return. vm is allowed to forget about it if it runs out of memory. processes can ask for it back using the same id. (These two operations are normally combined in a single call.) It can be used as a as-big-as-memory-will-allow block cache for filesystems, which is how mfs now uses it.
2010-05-05 13:35:04 +02:00
EXTERN int may_use_vmcache;
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
Reference in a new issue Copy permalink