char *
cf_parse_u64(const char *str, u64 *ptr)
{
char *msg = NULL;
if (!*str)
msg = "Missing number";
else {
const struct unit *u;
char *end;
errno = 0;
u64 x = strtoull(str, &end, 0);
if (errno == ERANGE)
msg = cf_rngerr;
else if (u = lookup_unit(str, end, &msg)) {
if (x > ~(u64)0 / u->num)
msg = "Number out of range";
else {
x *= u->num;
if (x % u->den)
msg = "Number is not an integer";
else
*ptr = x / u->den;
}
} else
*ptr = x;
}
return msg;
}
char *
cf_parse_int(const char *str, int *ptr)
{
char *msg = NULL;
if (!*str)
msg = "Missing number";
else {
const struct unit *u;
char *end;
errno = 0;
uns x = strtoul(str, &end, 0);
if (errno == ERANGE)
msg = cf_rngerr;
else if (u = lookup_unit(str, end, &msg)) {
u64 y = (u64)x * u->num;
if (y % u->den)
msg = "Number is not an integer";
else {
y /= u->den;
if (y > 0xffffffff)
msg = cf_rngerr;
*ptr = y;
}
} else
*ptr = x;
}
return msg;
}
struct scsi_unit *
scsi_register_unit( scsi_unit_pb_t *pb, int scsi_id, void *usr_data )
{
scsi_unit_t *unit;
if( lookup_unit(scsi_id) )
return NULL;
unit = calloc( sizeof( scsi_unit_t),1 );
unit->next = bus->units;
bus->units = unit;
unit->scsi_id = scsi_id;
unit->pb = *pb;
/* DEFAULT values */
if( !unit->pb.block_size )
unit->pb.block_size = DEFAULT_BLOCK_SIZE;
if( !unit->pb.handle_mes_proc )
unit->pb.handle_mes_proc = default_mes_handler;
if( !unit->pb.next_sphase_proc )
unit->pb.next_sphase_proc = default_next_sphase;
unit->usr_data = usr_data;
return unit;
}
char *
cf_parse_double(const char *str, double *ptr)
{
char *msg = NULL;
if (!*str)
msg = "Missing number";
else {
const struct unit *u;
double x;
uns read_chars;
if (sscanf(str, "%lf%n", &x, &read_chars) != 1)
msg = "Invalid number";
else if (u = lookup_unit(str, str + read_chars, &msg))
*ptr = x * u->num / u->den;
else
*ptr = x;
}
return msg;
}
