diff options
Diffstat (limited to 'cpukit/libfs/src/devfs/devfs.h')
| -rw-r--r-- | cpukit/libfs/src/devfs/devfs.h | 126 |
1 files changed, 43 insertions, 83 deletions
diff --git a/cpukit/libfs/src/devfs/devfs.h b/cpukit/libfs/src/devfs/devfs.h index 6e4f2478c7..758edf932b 100644 --- a/cpukit/libfs/src/devfs/devfs.h +++ b/cpukit/libfs/src/devfs/devfs.h @@ -17,38 +17,54 @@ extern "C" { /** * This structure define the type of device table */ - -typedef struct -{ - /** This member points to device name which is a null-terminated string */ - const char *device_name; +typedef struct { + /** This member points to device name which is not a null-terminated string */ + const char *name; /** This member is the name length of a device */ - uint32_t device_name_length; + size_t namelen; /** major number of a device */ rtems_device_major_number major; /** minor number of a device */ rtems_device_minor_number minor; /** device creation mode, only device file can be created */ mode_t mode; +} devFS_node; -} rtems_device_name_t; +typedef struct { + devFS_node *nodes; + size_t count; +} devFS_data; +/** + * The following defines the device-only filesystem operating + * operations. + */ +extern const rtems_filesystem_operations_table devFS_ops; /** - * This routine associates RTEMS status code with errno + * The following defines the device-only filesystem operating + * handlers. */ -extern int rtems_deviceio_errno(rtems_status_code code); - +extern const rtems_filesystem_file_handlers_r devFS_file_handlers; /** - * The following defines the device table size. This values - * is configured during application configuration time by - * the user. The default value is set to 4. + * This routine associates RTEMS status code with errno */ -extern uint32_t rtems_device_table_size; +extern int rtems_deviceio_errno(rtems_status_code code); + +static inline const devFS_data *devFS_get_data( + const rtems_filesystem_location_info_t *loc +) +{ + return loc->mt_entry->immutable_fs_info; +} + +extern void devFS_eval_path( + rtems_filesystem_eval_path_context_t *ctx +); /** * This handler maps open operation to rtems_io_open. @@ -62,8 +78,8 @@ extern uint32_t rtems_device_table_size; extern int devFS_open( rtems_libio_t *iop, const char *pathname, - uint32_t flag, - uint32_t mode + int oflag, + mode_t mode ); @@ -142,8 +158,8 @@ extern int devFS_ioctl( */ extern int devFS_stat( - rtems_filesystem_location_info_t *loc, - struct stat *buf + const rtems_filesystem_location_info_t *loc, + struct stat *buf ); @@ -153,63 +169,15 @@ extern int devFS_stat( * Since this is a device-only filesystem, so there is only * one node type in the system. * - * @param pathloc contains filesytem access information, this + * @param loc contains filesytem access information, this * parameter is ignored * @retval always returns RTEMS_FILESYSTEM_DEVICE */ extern rtems_filesystem_node_types_t devFS_node_type( - rtems_filesystem_location_info_t *pathloc + const rtems_filesystem_location_info_t*loc ); - - -/** - * This routine is invoked to determine if 'pathname' exists. - * This routine first check access flags, then it searches - * the device table to get the information. - * - * @param pathname device name to be searched - * @param flags access flags - * @param pathloc contains filesystem access information - * @retval upon success(pathname exists), this routines - * returns 0; if 'flag' is invalid, it returns -1 and errno - * is set to EIO; otherwise, it returns -1 and errno is set to ENOENT - */ - -extern int devFS_evaluate_path( - const char *pathname, - size_t pathnamelen, - int flags, - rtems_filesystem_location_info_t *pathloc -); - - -/** - * This routine is given a path to evaluate and a valid start - * location. It is responsible for finding the parent node for - * a requested make command, setting pathloc information to - * identify the parent node, and setting the name pointer to - * the first character of the name of the new node. In device - * only filesystem, devices do not has a tree hierarchy, there - * are no parent-child relationship. So this routine is rather - * simple, it just set *name to path and returns - * - * @param path device path to be evaluated - * @param pathloc contains filesystem access information, this - * parameter is ignored - * @param name - * @retval always returns 0 - */ - -extern int devFS_evaluate_for_make( - const char *path, - rtems_filesystem_location_info_t *pathloc, - const char **name -); - - - /** * This routine is invoked upon registration of a new device * file. It is responsible for creating a item in the main @@ -217,21 +185,15 @@ extern int devFS_evaluate_for_make( * sequential order, when found a empty slot, it fills the slot * with proper values. * - * @param path the device file name to be registered - * @param mode file mode, this parameter is ignored - * @param dev device major and minor number - * @param pathloc contains filesystem access information - * @retval upon success, this routine returns 0; if 'path' - * already exist, it returns -1 and errno is set to EEXIST; - * if device table is full, it returns -1 and errno is set - * to ENOMEM + * @see rtems_filesystem_mknod_t. */ extern int devFS_mknod( - const char *path, - mode_t mode, - dev_t dev, - rtems_filesystem_location_info_t *pathloc + const rtems_filesystem_location_info_t *parentloc, + const char *name, + size_t namelen, + mode_t mode, + dev_t dev ); @@ -266,11 +228,9 @@ extern int devFS_initialize( * * This routine is intended for debugging, and can be used by shell * program to provide user with the system information. - * - * @retval 0 */ -extern int devFS_Show(void); +extern void devFS_Show(void); #ifdef __cplusplus } |