pSOSystem System Calls - Read

init_vol pHILE+ System Calls
params Points to an instance of the init_vol_params structure, which
contains parameters used to initialize the volume. This structure is
defined in as follows:
typedef struct init_vol_params {
char volume_label[12]; /* volume label */
unsigned long volume_size; /* number blocks in volume */
unsigned long num_of_file_descriptors;
/* number descriptors in
* FLIST */
unsigned long starting_bitmap_block_number;
/* first BITMAP block */
unsigned long start_data_block_number;
/* first data block */
}INIT_VOL_PARAMS;
This structure cannot be packed. The fields of the init_vol_params
structure are described below:
volume_label Contains a 12-byte volume label. The pHILE+
file system manager copies the label to the
volume's ROOTBLOCK but does not use it. (The
volume label is not the volume name. The
volume name contains the volume's major
and minor device numbers.)
volume_size The number of blocks on the volume. For
example, a value of 5000 indicates the
volume contains blocks 0 - 4999.
num_of_file_descriptors
starting_bitmap_block_number
start_data_block_number
The number of file descriptors in the volume's
FLIST. This is the number of files that can be
created on the volume.
The starting block for the volume's BITMAP.
The starting block for the volume's data
blocks. The pHILE+ file system manager
requires this parameter to be a multiple of 8.
2-50 pSOSystem System Calls