1 files changed, 122 insertions, 0 deletions
diff --git a/src/guid.c b/src/guid.c
new file mode 100644
index 0000000..d9d5dcb
--- /dev/null
+++ b/src/guid.c
@@ -0,0 +1,122 @@
+#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;
+}