958b25be50
- 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.
76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
/* Function prototypes for iso9660 file system. */
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struct dir_record;
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struct ext_attr_rec;
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struct iso9660_vd_pri;
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/* main.c */
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_PROTOTYPE( int main, (void) );
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_PROTOTYPE( void reply, (int who, message *m_out) );
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/* cache.c */
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_PROTOTYPE(struct buf *get_block,(block_t block));
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_PROTOTYPE(void put_block,(struct buf *bp));
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/* device.c */
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_PROTOTYPE( int block_dev_io, (int op, Dev_t dev, int proc, void *buf,
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u64_t pos, int bytes, int flags) );
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_PROTOTYPE( int dev_open, (endpoint_t driver_e, Dev_t dev, int proc,
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int flags) );
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_PROTOTYPE( void dev_close, (endpoint_t driver_e, Dev_t dev) );
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_PROTOTYPE( int fs_new_driver, (void) );
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/* inode.c */
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_PROTOTYPE( int create_dir_record,(struct dir_record *dir, char *buffer,
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u32_t address) );
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_PROTOTYPE( int create_ext_attr,(struct ext_attr_rec *ext, char *buffer));
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_PROTOTYPE( int fs_getnode, (void) );
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_PROTOTYPE( int fs_putnode, (void) );
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_PROTOTYPE( struct dir_record *get_dir_record, (ino_t id_dir) );
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_PROTOTYPE( struct dir_record *get_free_dir_record, (void) );
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_PROTOTYPE( struct ext_attr_rec *get_free_ext_attr, (void) );
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_PROTOTYPE( struct dir_record *load_dir_record_from_disk,(u32_t address));
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_PROTOTYPE( int release_dir_record, (struct dir_record *dir) );
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/* misc.c */
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_PROTOTYPE( int fs_sync, (void) );
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/* mount.c */
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_PROTOTYPE( int fs_readsuper, (void) );
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_PROTOTYPE( int fs_mountpoint, (void) );
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_PROTOTYPE( int fs_unmount, (void) );
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/* path.c */
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_PROTOTYPE( int fs_lookup, (void) );
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_PROTOTYPE( int advance, (struct dir_record *dirp, char string[NAME_MAX],
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struct dir_record **resp) );
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_PROTOTYPE( int search_dir, (struct dir_record *ldir_ptr,
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char string [NAME_MAX], ino_t *numb) );
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/* protect.c */
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_PROTOTYPE( int fs_access, (void) );
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/* read.c */
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_PROTOTYPE( int fs_read, (void) );
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_PROTOTYPE( int fs_bread, (void) );
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_PROTOTYPE( int fs_getdents, (void) );
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_PROTOTYPE( int read_chunk, (struct dir_record *rip, u64_t position,
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unsigned off, int chunk, unsigned left,
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cp_grant_id_t gid, unsigned buf_off,
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int block_size, int *completed) );
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/* stadir.c */
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_PROTOTYPE( int fs_stat, (void) );
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_PROTOTYPE( int fs_fstatfs, (void) );
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/* super.c */
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_PROTOTYPE(int release_v_pri, (struct iso9660_vd_pri *v_pri) );
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_PROTOTYPE(int read_vds, (struct iso9660_vd_pri *v_pri, Dev_t dev) );
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_PROTOTYPE(int create_v_pri, (struct iso9660_vd_pri *v_pri, char *buffer,
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unsigned long address) );
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/* utility.c */
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_PROTOTYPE(int no_sys, (void));
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_PROTOTYPE(void panic, (char *who, char *mess, int num));
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