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The content_type field in partition_data is now set by the system. Implemented querying hooks for resizing a child partition of the partition map.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4048 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2003-07-22 00:16:13 +00:00
parent 9cd06f3a38
commit d3774a9b93
1 changed files with 62 additions and 9 deletions
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71
src/add-ons/kernel/partitioning_systems/intel/intel.cpp
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@ -291,6 +291,14 @@ static void pm_free_identify_partition_cookie(partition_data *partition,
static void pm_free_partition_cookie(partition_data *partition);
static void pm_free_partition_content_cookie(partition_data *partition);
// querying
static bool pm_supports_resizing_child(partition_data *partition,
partition_data *child);
static bool pm_validate_resize_child(partition_data *partition,
partition_data *child, off_t *size);
static partition_module_info intel_partition_map_module = {
{
kPartitionMapModuleName,
@ -310,7 +318,7 @@ static partition_module_info intel_partition_map_module = {
// querying
NULL, // supports_repairing
NULL, // supports_resizing
NULL, // supports_resizing_child
pm_supports_resizing_child, // supports_resizing_child
NULL, // supports_moving
NULL, // supports_moving_child
NULL, // supports_setting_name
@ -325,7 +333,7 @@ static partition_module_info intel_partition_map_module = {
NULL, // is_sub_system_for
NULL, // validate_resize
NULL, // validate_resize_child
pm_validate_resize_child, // validate_resize_child
NULL, // validate_move
NULL, // validate_move_child
NULL, // validate_set_name
@ -516,12 +524,11 @@ pm_scan_partition(int fd, partition_data *partition, void *cookie)
// fill in the partition_data structure
partition->status = B_PARTITION_VALID;
partition->flags |= B_PARTITION_PARTITIONING_SYSTEM
| B_PARTITION_READ_ONLY;
| B_PARTITION_READ_ONLY
| B_DISK_SYSTEM_SUPPORTS_RESIZING_CHILD;
// TODO: Update when write functionality is implemented.
// (no content_name and content_parameters)
partition->content_type = strdup(kPartitionTypeIntel);
if (!partition->content_type)
return B_NO_MEMORY;
// (content_type is set by the system)
partition->content_cookie = map;
// children
status_t error = B_OK;
@ -602,6 +609,54 @@ pm_free_partition_content_cookie(partition_data *partition)
}
}
// pm_supports_resizing_child
static
bool
pm_supports_resizing_child(partition_data *partition, partition_data *child)
{
return (partition && child && partition->content_type
&& !strcmp(partition->content_type, kPartitionTypeIntel));
}
// pm_validate_resize_child
static
bool
pm_validate_resize_child(partition_data *partition, partition_data *child,
off_t *size)
{
if (!partition || !child || !partition->content_type
|| strcmp(partition->content_type, kPartitionTypeIntel)
|| !size) {
return false;
}
// size remains the same?
if (*size == child->size)
return true;
// shrink partition?
if (*size < child->size) {
if (*size < 0)
*size = 0;
// make the size a multiple of the block size
*size = *size / partition->block_size * partition->block_size;
return true;
}
// grow partition
// child must completely lie within the parent partition
if (child->offset + *size > partition->offset + partition->size)
*size = partition->offset + partition->size - child->offset;
// child must not intersect with sibling partitions
for (int32 i = 0; i < partition->child_count; i++) {
partition_data *sibling = get_child_partition(partition->id, i);
if (sibling && sibling != child && sibling->offset > child->offset) {
if (child->offset + *size > sibling->offset)
*size = sibling->offset - child->offset;
}
}
// make the size a multiple of the block size
*size = *size / partition->block_size * partition->block_size;
return true;
}
// intel extended partition module
@ -662,9 +717,7 @@ ep_scan_partition(int fd, partition_data *partition, void *cookie)
| B_PARTITION_READ_ONLY;
// TODO: Update when write functionality is implemented.
// (no content_name and content_parameters)
partition->content_type = strdup(kPartitionTypeIntelExtended);
if (!partition->content_type)
return B_NO_MEMORY;
// (content_type is set by the system)
partition->content_cookie = primary;
// children
status_t error = B_OK;