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[ICEs.git] / 568732 / writepart.c

diff --git a/568732/writepart.c b/568732/writepart.c
new file mode 100644 (file)
index 0000000..725b2b1
--- /dev/null
+++ b/568732/writepart.c
@@ -0,0 +1,55 @@
+#include <stddef.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+
+struct apartition {
+       unsigned char flag;
+       char id[3];
+       uint32_t start;
+       uint32_t size;
+} __attribute__((packed));
+struct rootsector {
+       char unused[0x156];
+       struct apartition icdpart[8];
+       char unused2[0xc];
+       struct apartition part[4];
+} __attribute__((packed));
+typedef struct _PARTITION {
+       unsigned long start;
+       char id[4];
+       unsigned long rootsec;
+} PARTITION;
+int partitions;
+PARTITION part_table[64];
+static void PART2diskpart(PARTITION * cp, struct apartition *dp,
+                         unsigned long relto)
+{
+       memcpy(dp->id, cp->id, 3);
+}
+
+void put_boot(int first_ext, int last_ext, PARTITION * master_XGM)
+{
+       char buffer[sizeof(struct rootsector)];
+       struct rootsector *rs = (struct rootsector *)buffer;
+       struct apartition *pi;
+       int i, bootable;
+       PARTITION cont_XGM;
+       pi = &rs->part[0];
+       for (i = 0; i < partitions; ++i) {
+               if (i == first_ext) {
+                       PART2diskpart(master_XGM, pi, 0);
+                       PART2diskpart(&part_table[i], &rs->part[0],
+                                     part_table[i].rootsec);
+                       if (i == last_ext) {
+                               PART2diskpart(&cont_XGM, &rs->part[1],
+                                             master_XGM->start);
+                       }
+               }
+       }
+}
+
+main() {
+       printf("%i\n", sizeof(struct rootsector));
+       printf("%i %i\n", offsetof(struct rootsector, part[0]));
+}