diff options
Diffstat (limited to 'cpukit/libfs/src/imfs/imfs.h')
| -rw-r--r-- | cpukit/libfs/src/imfs/imfs.h | 138 |
1 files changed, 101 insertions, 37 deletions
diff --git a/cpukit/libfs/src/imfs/imfs.h b/cpukit/libfs/src/imfs/imfs.h index 7c926a854e..ae247c5833 100644 --- a/cpukit/libfs/src/imfs/imfs.h +++ b/cpukit/libfs/src/imfs/imfs.h @@ -132,9 +132,12 @@ typedef enum { IMFS_SYM_LINK = RTEMS_FILESYSTEM_SYM_LINK, IMFS_MEMORY_FILE = RTEMS_FILESYSTEM_MEMORY_FILE, IMFS_LINEAR_FILE, - IMFS_FIFO + IMFS_FIFO, + IMFS_INVALID_NODE } IMFS_jnode_types_t; +#define IMFS_TYPE_COUNT (IMFS_FIFO + 1) + typedef union { IMFS_directory_t directory; IMFS_device_t device; @@ -145,6 +148,38 @@ typedef union { IMFS_fifo_t fifo; } IMFS_types_union; +typedef IMFS_jnode_t *(*IMFS_node_control_initialize)( + IMFS_jnode_t *node, + const IMFS_types_union *info +); + +IMFS_jnode_t *IMFS_node_initialize_default( + IMFS_jnode_t *node, + const IMFS_types_union *info +); + +typedef IMFS_jnode_t *(*IMFS_node_control_remove)( + IMFS_jnode_t *node, + const IMFS_jnode_t *root_node +); + +IMFS_jnode_t *IMFS_node_remove_default( + IMFS_jnode_t *node, + const IMFS_jnode_t *root_node +); + +typedef IMFS_jnode_t *(*IMFS_node_control_destroy)( IMFS_jnode_t *node ); + +IMFS_jnode_t *IMFS_node_destroy_default( IMFS_jnode_t *node ); + +typedef struct { + IMFS_jnode_types_t imfs_type; + const rtems_filesystem_file_handlers_r *handlers; + IMFS_node_control_initialize node_initialize; + IMFS_node_control_remove node_remove; + IMFS_node_control_destroy node_destroy; +} IMFS_node_control; + /* * Major device number for the IMFS. This is not a real device number because * the IMFS is just a file system and does not have a driver. @@ -176,7 +211,7 @@ struct IMFS_jnode_tt { time_t stat_atime; /* Time of last access */ time_t stat_mtime; /* Time of last modification */ time_t stat_ctime; /* Time of last status change */ - IMFS_jnode_types_t type; /* Type of this entry */ + const IMFS_node_control *control; IMFS_types_union info; }; @@ -210,25 +245,28 @@ struct IMFS_jnode_tt { } while (0) typedef struct { - int instance; - ino_t ino_count; - const rtems_filesystem_file_handlers_r *memfile_handlers; - const rtems_filesystem_file_handlers_r *directory_handlers; - const rtems_filesystem_file_handlers_r *link_handlers; - const rtems_filesystem_file_handlers_r *fifo_handlers; + int instance; + ino_t ino_count; + const IMFS_node_control *node_controls [IMFS_TYPE_COUNT]; } IMFS_fs_info_t; /* * Shared Data */ -extern const rtems_filesystem_file_handlers_r IMFS_directory_handlers; -extern const rtems_filesystem_file_handlers_r IMFS_device_handlers; -extern const rtems_filesystem_file_handlers_r IMFS_link_handlers; -extern const rtems_filesystem_file_handlers_r IMFS_memfile_handlers; -extern const rtems_filesystem_file_handlers_r IMFS_fifo_handlers; -extern const rtems_filesystem_operations_table IMFS_ops; -extern const rtems_filesystem_operations_table fifoIMFS_ops; +extern const IMFS_node_control IMFS_node_control_directory; +extern const IMFS_node_control IMFS_node_control_device; +extern const IMFS_node_control IMFS_node_control_hard_link; +extern const IMFS_node_control IMFS_node_control_sym_link; +extern const IMFS_node_control IMFS_node_control_memfile; +extern const IMFS_node_control IMFS_node_control_linfile; +extern const IMFS_node_control IMFS_node_control_fifo; +extern const IMFS_node_control IMFS_node_control_default; + +extern const rtems_filesystem_operations_table miniIMFS_ops; +extern const rtems_filesystem_operations_table IMFS_ops; +extern const rtems_filesystem_operations_table fifoIMFS_ops; + extern const rtems_filesystem_limits_and_options_t IMFS_LIMITS_AND_OPTIONS; /* @@ -251,10 +289,9 @@ extern int miniIMFS_initialize( ); extern int IMFS_initialize_support( - rtems_filesystem_mount_table_entry_t *mt_entry, - const rtems_filesystem_operations_table *op_table, - const rtems_filesystem_file_handlers_r *link_handlers, - const rtems_filesystem_file_handlers_r *fifo_handlers + rtems_filesystem_mount_table_entry_t *mt_entry, + const rtems_filesystem_operations_table *op_table, + const IMFS_node_control *const node_controls [IMFS_TYPE_COUNT] ); extern void IMFS_fsunmount( @@ -290,8 +327,6 @@ extern int IMFS_stat( struct stat *buf ); -extern void IMFS_Set_handlers( rtems_filesystem_location_info_t *loc ); - extern void IMFS_eval_path( rtems_filesystem_eval_path_context_t *ctx ); @@ -318,21 +353,21 @@ extern int IMFS_mknod( ); extern IMFS_jnode_t *IMFS_allocate_node( - IMFS_jnode_types_t type, /* IN */ - const char *name, /* IN */ - size_t namelen, /* IN */ - mode_t mode /* IN */ + IMFS_fs_info_t *fs_info, + const IMFS_node_control *node_control, + const char *name, + size_t namelen, + mode_t mode, + const IMFS_types_union *info ); -extern IMFS_jnode_t *IMFS_create_root_node(void); - -extern IMFS_jnode_t *IMFS_create_node( - const rtems_filesystem_location_info_t *pathloc, /* IN */ - IMFS_jnode_types_t type, /* IN */ - const char *name, /* IN */ - size_t namelen, /* IN */ - mode_t mode, /* IN */ - const IMFS_types_union *info /* IN */ +extern IMFS_jnode_t *IMFS_create_node_with_control( + const rtems_filesystem_location_info_t *parentloc, + const IMFS_node_control *node_control, + const char *name, + size_t namelen, + mode_t mode, + const IMFS_types_union *info ); extern int IMFS_mount( @@ -343,7 +378,7 @@ extern int IMFS_unmount( rtems_filesystem_mount_table_entry_t *mt_entry /* IN */ ); -extern int IMFS_memfile_remove( +extern IMFS_jnode_t *IMFS_memfile_remove( IMFS_jnode_t *the_jnode /* IN/OUT */ ); @@ -483,6 +518,13 @@ extern int IMFS_rmnod( #define IMFS_assert(_x) #endif +static inline void IMFS_Set_handlers( rtems_filesystem_location_info_t *loc ) +{ + IMFS_jnode_t *node = (IMFS_jnode_t *) loc->node_access; + + loc->handlers = node->control->handlers; +} + static inline void IMFS_add_to_directory( IMFS_jnode_t *dir, IMFS_jnode_t *node @@ -501,12 +543,34 @@ static inline void IMFS_remove_from_directory( IMFS_jnode_t *node ) static inline IMFS_jnode_types_t IMFS_type( const IMFS_jnode_t *node ) { - return node->type; + return node->control->imfs_type; } static inline bool IMFS_is_directory( const IMFS_jnode_t *node ) { - return node->type == IMFS_DIRECTORY; + return node->control->imfs_type == IMFS_DIRECTORY; +} + +static inline IMFS_jnode_t *IMFS_create_node( + const rtems_filesystem_location_info_t *parentloc, + IMFS_jnode_types_t type, + const char *name, + size_t namelen, + mode_t mode, + const IMFS_types_union *info +) +{ + const IMFS_fs_info_t *fs_info = + (const IMFS_fs_info_t *) parentloc->mt_entry->fs_info; + + return IMFS_create_node_with_control( + parentloc, + fs_info->node_controls [type], + name, + namelen, + mode, + info + ); } #ifdef __cplusplus |