Merged the disk device manager module interface for file systems with the
VFS's interface, so that a file system only has to implement one interface. As a side effect, the automatic file system detection may now work (not yet tested, though). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12786 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
@@ -0,0 +1,126 @@
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// disk_device_manager.h
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//
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// C API exported by the disk device manager.
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// Currently only functions of interest for partition modules/FS add-ons
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// are considered.
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#ifndef _DISK_DEVICE_MANAGER_H
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#define _DISK_DEVICE_MANAGER_H
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#include <Drivers.h>
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#include <storage/DiskDeviceDefs.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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// C API partition representation
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// Fields marked [sys] are set by the system and are not to be changed by
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// the disk system modules.
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typedef struct partition_data {
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partition_id id; // [sys]
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off_t offset;
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off_t size;
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off_t content_size;
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uint32 block_size;
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int32 child_count;
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int32 index; // [sys]
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uint32 status;
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uint32 flags;
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dev_t volume; // [sys]
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void *mount_cookie; // [sys]
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char *name; // max: B_OS_NAME_LENGTH
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char *content_name; //
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char *type; //
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const char *content_type; // [sys]
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char *parameters;
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char *content_parameters;
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void *cookie;
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void *content_cookie;
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} partition_data;
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// C API disk device representation
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typedef struct disk_device_data {
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partition_id id; // equal to that of the root partition
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uint32 flags;
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char *path;
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device_geometry geometry;
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} disk_device_data;
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// C API partitionable space representation
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typedef struct partitionable_space_data {
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off_t offset;
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off_t size;
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} partitionable_space_data;
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// operations on partitions
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enum {
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B_PARTITION_DEFRAGMENT,
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B_PARTITION_REPAIR,
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B_PARTITION_RESIZE,
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B_PARTITION_RESIZE_CHILD,
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B_PARTITION_MOVE,
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B_PARTITION_MOVE_CHILD,
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B_PARTITION_SET_NAME,
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B_PARTITION_SET_CONTENT_NAME,
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B_PARTITION_SET_TYPE,
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B_PARTITION_SET_PARAMETERS,
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B_PARTITION_SET_CONTENT_PARAMETERS,
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B_PARTITION_INITIALIZE,
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B_PARTITION_CREATE_CHILD,
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B_PARTITION_DELETE_CHILD,
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};
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// disk device job cancel status
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enum {
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B_DISK_DEVICE_JOB_CONTINUE,
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B_DISK_DEVICE_JOB_CANCEL,
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B_DISK_DEVICE_JOB_REVERSE,
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};
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// disk device locking
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disk_device_data *write_lock_disk_device(partition_id partitionID);
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void write_unlock_disk_device(partition_id partitionID);
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disk_device_data *read_lock_disk_device(partition_id partitionID);
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void read_unlock_disk_device(partition_id partitionID);
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// parameter is the ID of any partition on the device
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// getting disk devices/partitions by path
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// (no locking required)
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int32 find_disk_device(const char *path);
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int32 find_partition(const char *path);
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// disk device/partition read access
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// (read lock required)
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disk_device_data *get_disk_device(partition_id partitionID);
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partition_data *get_partition(partition_id partitionID);
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partition_data *get_parent_partition(partition_id partitionID);
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partition_data *get_child_partition(partition_id partitionID, int32 index);
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// partition write access
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// (write lock required)
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partition_data *create_child_partition(partition_id partitionID, int32 index,
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partition_id childID);
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// childID is an optional input parameter -- -1 to be ignored
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bool delete_partition(partition_id partitionID);
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void partition_modified(partition_id partitionID);
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// tells the disk device manager, that the parition has been modified
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// disk systems
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disk_system_id find_disk_system(const char *name);
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// jobs
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bool update_disk_device_job_progress(disk_job_id jobID, float progress);
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bool update_disk_device_job_extra_progress(disk_job_id jobID,
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const char *info);
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bool set_disk_device_job_error_message(disk_job_id jobID, const char *message);
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uint32 update_disk_device_job_interrupt_properties(disk_job_id jobID,
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uint32 interruptProperties);
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// returns one of B_DISK_DEVICE_JOB_{CONTINUE,CANCEL,REVERSE}
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#ifdef __cplusplus
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}
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#endif
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#endif // _DISK_DEVICE_MANAGER_H
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@@ -10,6 +10,7 @@
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#include <OS.h>
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#include <Select.h>
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#include <module.h>
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#include <disk_device_manager.h>
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#include <sys/uio.h>
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@@ -54,11 +55,22 @@ struct file_io_vec {
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extern "C" {
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#endif
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typedef struct file_system_info {
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struct module_info module_info;
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typedef struct file_system_module_info {
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struct module_info info;
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const char *pretty_name;
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/* scanning (the device is write locked) */
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float (*identify_partition)(int fd, partition_data *partition,
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void **cookie);
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status_t (*scan_partition)(int fd, partition_data *partition,
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void *cookie);
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void (*free_identify_partition_cookie)(partition_data *partition,
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void *cookie);
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void (*free_partition_content_cookie)(partition_data *partition);
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/* general operations */
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status_t (*mount)(mount_id id, const char *device, uint32 flags, const char *args, fs_volume *_fs, vnode_id *_rootVnodeID);
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status_t (*mount)(mount_id id, const char *device, uint32 flags,
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const char *args, fs_volume *_fs, vnode_id *_rootVnodeID);
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status_t (*unmount)(fs_volume fs);
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status_t (*read_fs_info)(fs_volume fs, struct fs_info *info);
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@@ -154,9 +166,56 @@ typedef struct file_system_info {
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status_t (*open_query)(fs_volume fs, const char *query, uint32 flags, port_id port, uint32 token, fs_cookie *_cookie);
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status_t (*close_query)(fs_volume fs, fs_cookie cookie);
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status_t (*free_query_cookie)(fs_volume fs, fs_cookie cookie);
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status_t (*read_query)(fs_volume fs, fs_cookie cookie, struct dirent *buffer, size_t bufferSize, uint32 *_num);
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status_t (*read_query)(fs_volume fs, fs_cookie cookie,
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struct dirent *buffer, size_t bufferSize, uint32 *_num);
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status_t (*rewind_query)(fs_volume fs, fs_cookie cookie);
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} file_system_info;
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/* capability querying (the device is read locked) */
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// ToDo: this will probably be combined to a single call
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bool (*supports_defragmenting)(partition_data *partition,
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bool *whileMounted);
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bool (*supports_repairing)(partition_data *partition,
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bool checkOnly, bool *whileMounted);
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bool (*supports_resizing)(partition_data *partition,
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bool *whileMounted);
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bool (*supports_moving)(partition_data *partition, bool *isNoOp);
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bool (*supports_setting_content_name)(partition_data *partition,
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bool *whileMounted);
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bool (*supports_setting_content_parameters)(partition_data *partition,
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bool *whileMounted);
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bool (*supports_initializing)(partition_data *partition);
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bool (*validate_resize)(partition_data *partition, off_t *size);
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bool (*validate_move)(partition_data *partition, off_t *start);
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bool (*validate_set_content_name)(partition_data *partition,
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char *name);
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bool (*validate_set_content_parameters)(partition_data *partition,
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const char *parameters);
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bool (*validate_initialize)(partition_data *partition, char *name,
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const char *parameters);
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/* shadow partition modification (device is write locked) */
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status_t (*shadow_changed)(partition_data *partition,
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uint32 operation);
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/* writing (the device is NOT locked) */
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status_t (*defragment)(int fd, partition_id partition,
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disk_job_id job);
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status_t (*repair)(int fd, partition_id partition, bool checkOnly,
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disk_job_id job);
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status_t (*resize)(int fd, partition_id partition, off_t size,
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disk_job_id job);
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status_t (*move)(int fd, partition_id partition, off_t offset,
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disk_job_id job);
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status_t (*set_content_name)(int fd, partition_id partition,
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const char *name, disk_job_id job);
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status_t (*set_content_parameters)(int fd, partition_id partition,
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const char *parameters, disk_job_id job);
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status_t (*initialize)(const char *partition, const char *name,
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const char *parameters, disk_job_id job);
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// This is pretty close to how the hook in R5 looked. Save the job ID, of
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// course and that the parameters were given as (void*, size_t) pair.
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} file_system_module_info;
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/* file system add-ons only prototypes */
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