diff options
Diffstat (limited to 'cpukit/libblock/src/ide_part_table.c')
-rw-r--r-- | cpukit/libblock/src/ide_part_table.c | 47 |
1 files changed, 37 insertions, 10 deletions
diff --git a/cpukit/libblock/src/ide_part_table.c b/cpukit/libblock/src/ide_part_table.c index ec5460ff4c..0e44c9c9b8 100644 --- a/cpukit/libblock/src/ide_part_table.c +++ b/cpukit/libblock/src/ide_part_table.c @@ -19,7 +19,7 @@ *****************************************************************************/ #include <rtems/ide_part_table.h> - +#include <string.h> /* * get_sector -- @@ -112,6 +112,29 @@ is_extended(unsigned8 type) return ((type == EXTENDED_PARTITION) || (type == LINUX_EXTENDED)); } +/* + * is_fat_partition -- + * checks if the partition type is defined for FAT + * + * PARAMETERS: + * type - type of partition to check + * + * RETURNS: + * TRUE if partition type is extended, FALSE otherwise + */ +static rtems_boolean +is_fat_partition(unsigned8 type) +{ + static const unsigned8 fat_part_types[] = { + DOS_FAT12_PARTITION,DOS_FAT16_PARTITION, + DOS_P32MB_PARTITION, + FAT32_PARTITION ,FAT32_LBA_PARTITION, + FAT16_LBA_PARTITION + }; + + return (NULL != memchr(fat_part_types,type,sizeof(fat_part_types))); +} + /* * data_to_part_desc -- @@ -157,16 +180,20 @@ data_to_part_desc(unsigned8 *data, part_desc_t **new_part_desc) memcpy(&temp, data + RTEMS_IDE_PARTITION_SIZE_OFFSET, sizeof(unsigned32)); part_desc->size = LE_TO_CPU_U32(temp); - if ((part_desc->sys_type == EMPTY_PARTITION) || - ((part_desc->size == 0) && (!is_extended(part_desc->sys_type)))) - { - /* empty partition */ - free(part_desc); - return RTEMS_SUCCESSFUL; + /* + * use partitions that are + * - extended + * or + * - FAT type and non-zero + */ + if (is_extended(part_desc->sys_type) || + (is_fat_partition(part_desc->sys_type)) && (part_desc->size != 0)) { + *new_part_desc = part_desc; + } + else { + /* empty partition */ + free(part_desc); } - - *new_part_desc = part_desc; - return RTEMS_SUCCESSFUL; } |