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#include "project.h"
static struct known_struct
{
GUID g;
char *name;
} known_guids[] =
{
{ GUID_TYPE_EMPTY, "empty"},
{ GUID_TYPE_SYSTEM, "EFI SYSTEM"},
{GUID_TYPE_LINUX_EXT3,"linux-ext3"},
{GUID_TYPE_LINUX_SWAP,"linux-swap"},
{GUID_TYPE_APPLE_HFS,"apple-hfs"},
{ {0}, NULL}
};
int guid_cmp(GUID *a,GUID *b)
{
return memcmp(a,b,sizeof(GUID));
}
#define GUIDTOARETSIZE 80
char *
guid_to_a (GUID g)
{
char *ret = malloc (GUIDTOARETSIZE);
struct known_struct *ptr = known_guids;
snprintf (ret, GUIDTOARETSIZE,
"%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
g.d[3], g.d[2], g.d[1], g.d[0], g.d[5], g.d[4], g.d[7], g.d[6],
g.d[8], g.d[9], g.d[10], g.d[11], g.d[12], g.d[13], g.d[14],
g.d[15]);
while (ptr->name)
{
if (!guid_cmp (&g, &ptr->g))
{
strcat (ret, " (");
strcat (ret, ptr->name);
strcat (ret, ")");
}
ptr++;
}
return ret;
}
int
a_to_guid (char *a,GUID *g)
{
struct known_struct *ptr = known_guids;
int digit[32],ndigits=0,i;
while (ptr->name)
{
if (!strcmp (a, ptr->name))
memcpy(g,&ptr->g,sizeof(GUID));
return 0;
}
while ((*a) && (ndigits!=32)) {
switch (*a) {
case ' ':
case '\t':
case '\n':
case '\r':
case '-':
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
digit[ndigits++]=(*a)-'0';
break;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
digit[ndigits++]=((*a)-'A')+0xA;
break;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
digit[ndigits++]=((*a)-'a')+0xa;
break;
defalt:
return -1;
}
}
for (i=0;i<16;++i) {
g->d[i]=(digit[(i<<1)] << 4) | digit[(i<<1)+1];
}
return 0;
}
GUID random_guid(void)
{
GUID ret;
int fd=open("/dev/random",O_RDONLY);
read(fd,&ret,sizeof(ret));
close(fd);
return ret;
}
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