int
convert_block0(Block0 *data, int to_cpu_form)
{
#if BYTE_ORDER == LITTLE_ENDIAN
DDMap *m;
u16 count;
int i;
// Since this data is optional we do not want to convert willy-nilly.
// We use the flag to determine whether to check for the signature
// before or after we flip the bytes and to determine which form of
// the count to use.
if (to_cpu_form) {
reverse2((u8 *)&data->sbSig);
if (data->sbSig != BLOCK0_SIGNATURE) {
reverse2((u8 *)&data->sbSig);
if (data->sbSig != BLOCK0_SIGNATURE) {
return 0;
}
}
} else {
if (data->sbSig != BLOCK0_SIGNATURE) {
return 0;
}
reverse2((u8 *)&data->sbSig);
}
reverse2((u8 *)&data->sbBlkSize);
reverse4((u8 *)&data->sbBlkCount);
reverse2((u8 *)&data->sbDevType);
reverse2((u8 *)&data->sbDevId);
reverse4((u8 *)&data->sbData);
if (to_cpu_form) {
reverse2((u8 *)&data->sbDrvrCount);
count = data->sbDrvrCount;
} else {
count = data->sbDrvrCount;
reverse2((u8 *)&data->sbDrvrCount);
}
if (count > 0) {
m = (DDMap *) data->sbMap;
for (i = 0; i < count; i++) {
reverse4((u8 *)&m[i].ddBlock);
reverse2((u8 *)&m[i].ddSize);
reverse2((u8 *)&m[i].ddType);
}
}
#endif
return 0;
}
int
convert_bzb(BZB *data, int to_cpu_form)
{
// Since the data here varies according to the type of partition we
// do not want to convert willy-nilly. We use the flag to determine
// whether to check for the signature before or after we flip the bytes.
if (to_cpu_form) {
reverse4((u8 *)&data->bzb_magic);
if (data->bzb_magic != BZBMAGIC) {
reverse4((u8 *)&data->bzb_magic);
if (data->bzb_magic != BZBMAGIC) {
return 0;
}
}
} else {
if (data->bzb_magic != BZBMAGIC) {
return 0;
}
reverse4((u8 *)&data->bzb_magic);
}
reverse2((u8 *)&data->bzb_inode);
reverse4((u8 *)&data->bzb_flags);
reverse4((u8 *)&data->bzb_tmade);
reverse4((u8 *)&data->bzb_tmount);
reverse4((u8 *)&data->bzb_tumount);
return 0;
}
/*****************************************************************
*函数名称:addrtot
*功能 :2 进制地址转换成字符型
* addrtot - convert binary address to text
* (dotted decimal or IPv6 string)
*
*******************************************************************
*
*
*
******************************************************************/
size_t addrtot(const ip_address *src, int format, char *dst, size_t dstlen)
{
const unsigned char *b;
size_t n;
char buf[1+ADDRTOT_BUF+1]; /* :address: */
char *p;
int t = addrtypeof(src);
#define TF(t, f) (((t)<<8) | (f))
n = addrbytesptr(src, &b);
if (n == 0) {
bad:
dst[0]='\0';
strncat(dst, "invalid", dstlen);
return sizeof("invalid");
}
switch (TF(t, format)) {
case TF(AF_INET, 0):
n = normal4(b, n, buf, &p);
break;
case TF(AF_INET6, 0):
n = normal6(b, n, buf, &p, 1);
break;
case TF(AF_INET, 'Q'):
n = normal4(b, n, buf, &p);
break;
case TF(AF_INET6, 'Q'):
n = normal6(b, n, buf, &p, 0);
break;
case TF(AF_INET, 'r'):
n = reverse4(b, n, buf, &p);
break;
case TF(AF_INET6, 'r'):
n = reverse6(b, n, buf, &p);
break;
default: /* including (AF_INET, 'R') */
goto bad;
break;
}
if (dstlen > 0)
{
if (dstlen < n)
p[dstlen - 1] = '\0';
strcpy(dst, p);
}
return n;
}
//
// Routines
//
int
convert_dpme(DPME *data, int to_cpu_form)
{
#if BYTE_ORDER == LITTLE_ENDIAN
// Since we will toss the block if the signature doesn't match
// we don't need to check the signature down here.
reverse2((u8 *)&data->dpme_signature);
reverse2((u8 *)&data->dpme_reserved_1);
reverse4((u8 *)&data->dpme_map_entries);
reverse4((u8 *)&data->dpme_pblock_start);
reverse4((u8 *)&data->dpme_pblocks);
reverse4((u8 *)&data->dpme_lblock_start);
reverse4((u8 *)&data->dpme_lblocks);
reverse4((u8 *)&data->dpme_flags);
reverse4((u8 *)&data->dpme_boot_block);
reverse4((u8 *)&data->dpme_boot_bytes);
reverse4((u8 *)&data->dpme_load_addr);
reverse4((u8 *)&data->dpme_load_addr_2);
reverse4((u8 *)&data->dpme_goto_addr);
reverse4((u8 *)&data->dpme_goto_addr_2);
reverse4((u8 *)&data->dpme_checksum);
convert_bzb((BZB *)data->dpme_bzb, to_cpu_form);
#endif
return 0;
}
