fsinfo
fsinfo = calloc(2, secsize);
if (fsinfo == NULL)
|| (size_t)read(dosfs, fsinfo, 2 * secsize)
if (memcmp(fsinfo, "RRaA", 4)
|| memcmp(fsinfo + 0x1e4, "rrAa", 4)
|| fsinfo[0x1fc]
|| fsinfo[0x1fd]
|| fsinfo[0x1fe] != 0x55
|| fsinfo[0x1ff] != 0xaa
|| fsinfo[0x3fc]
|| fsinfo[0x3fd]
|| fsinfo[0x3fe] != 0x55
|| fsinfo[0x3ff] != 0xaa) {
memcpy(fsinfo, "RRaA", 4);
memcpy(fsinfo + 0x1e4, "rrAa", 4);
fsinfo[0x1fc] = fsinfo[0x1fd] = 0;
fsinfo[0x1fe] = 0x55;
fsinfo[0x1ff] = 0xaa;
fsinfo[0x3fc] = fsinfo[0x3fd] = 0;
fsinfo[0x3fe] = 0x55;
fsinfo[0x3ff] = 0xaa;
|| (size_t)write(dosfs, fsinfo, 2 * secsize)
free(fsinfo);
boot->FSFree = fsinfo[0x1e8] + (fsinfo[0x1e9] << 8)
+ (fsinfo[0x1ea] << 16)
+ ((uint32_t)fsinfo[0x1eb] << 24);
boot->FSNext = fsinfo[0x1ec] + (fsinfo[0x1ed] << 8)
+ (fsinfo[0x1ee] << 16)
+ ((uint32_t)fsinfo[0x1ef] << 24);
free(fsinfo);
free(fsinfo);
u_char *fsinfo;
fsinfo = calloc(2, boot->BytesPerSec);
if (fsinfo == NULL)
|| (size_t)read(dosfs, fsinfo, 2 * boot->BytesPerSec)
free(fsinfo);
fsinfo[0x1e8] = (u_char)boot->FSFree;
fsinfo[0x1e9] = (u_char)(boot->FSFree >> 8);
fsinfo[0x1ea] = (u_char)(boot->FSFree >> 16);
fsinfo[0x1eb] = (u_char)(boot->FSFree >> 24);
fsinfo[0x1ec] = (u_char)boot->FSNext;
fsinfo[0x1ed] = (u_char)(boot->FSNext >> 8);
fsinfo[0x1ee] = (u_char)(boot->FSNext >> 16);
fsinfo[0x1ef] = (u_char)(boot->FSNext >> 24);
|| (size_t)write(dosfs, fsinfo, 2 * boot->BytesPerSec)
free(fsinfo);
free(fsinfo);
u_char *fsinfo;
struct fsinfo *fp = (struct fsinfo *)bpn->b_data;
struct fsinfo *fp;
fp = (struct fsinfo *)bp->b_data;
struct fsinfo *fp;
fp = (struct fsinfo *)bp->b_data;