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Diffstat (limited to 'i/pc104/initrd/conf/busybox/util-linux/fdformat.c')
-rw-r--r--i/pc104/initrd/conf/busybox/util-linux/fdformat.c144
1 files changed, 144 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/util-linux/fdformat.c b/i/pc104/initrd/conf/busybox/util-linux/fdformat.c
new file mode 100644
index 0000000..d694bd6
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/util-linux/fdformat.c
@@ -0,0 +1,144 @@
+/* vi: set sw=4 ts=4: */
+/* fdformat.c - Low-level formats a floppy disk - Werner Almesberger */
+
+/* 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@pld.ORG.PL>
+ * - added Native Language Support
+ * 1999-03-20 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ * - more i18n/nls translatable strings marked
+ *
+ * 5 July 2003 -- modified for Busybox by Erik Andersen
+ */
+
+#include "busybox.h"
+
+
+/* Stuff extracted from linux/fd.h */
+struct floppy_struct {
+ unsigned int size, /* nr of sectors total */
+ sect, /* sectors per track */
+ head, /* nr of heads */
+ track, /* nr of tracks */
+ stretch; /* !=0 means double track steps */
+#define FD_STRETCH 1
+#define FD_SWAPSIDES 2
+
+ unsigned char gap, /* gap1 size */
+
+ rate, /* data rate. |= 0x40 for perpendicular */
+#define FD_2M 0x4
+#define FD_SIZECODEMASK 0x38
+#define FD_SIZECODE(floppy) (((((floppy)->rate&FD_SIZECODEMASK)>> 3)+ 2) %8)
+#define FD_SECTSIZE(floppy) ( (floppy)->rate & FD_2M ? \
+ 512 : 128 << FD_SIZECODE(floppy) )
+#define FD_PERP 0x40
+
+ spec1, /* stepping rate, head unload time */
+ fmt_gap; /* gap2 size */
+ const char * name; /* used only for predefined formats */
+};
+struct format_descr {
+ unsigned int device,head,track;
+};
+#define FDFMTBEG _IO(2,0x47)
+#define FDFMTTRK _IOW(2,0x48, struct format_descr)
+#define FDFMTEND _IO(2,0x49)
+#define FDGETPRM _IOR(2, 0x04, struct floppy_struct)
+#define FD_FILL_BYTE 0xF6 /* format fill byte. */
+
+static void xioctl(int fd, int request, void *argp, const char *string)
+{
+ if (ioctl(fd, request, argp) < 0) {
+ bb_perror_msg_and_die(string);
+ }
+}
+
+int fdformat_main(int argc,char **argv);
+int fdformat_main(int argc,char **argv)
+{
+ int fd, n, cyl, read_bytes, verify;
+ unsigned char *data;
+ struct stat st;
+ struct floppy_struct param;
+ struct format_descr descr;
+
+ if (argc < 2) {
+ bb_show_usage();
+ }
+ verify = !getopt32(argc, argv, "n");
+ argv += optind;
+
+ xstat(*argv, &st);
+ if (!S_ISBLK(st.st_mode)) {
+ bb_error_msg_and_die("%s: not a block device", *argv);
+ /* do not test major - perhaps this was an USB floppy */
+ }
+
+ /* O_RDWR for formatting and verifying */
+ fd = xopen(*argv, O_RDWR);
+
+ /* original message was: "Could not determine current format type" */
+ xioctl(fd, FDGETPRM, &param, "FDGETPRM");
+
+ printf("%s-sided, %d tracks, %d sec/track. Total capacity %d kB\n",
+ (param.head == 2) ? "Double" : "Single",
+ param.track, param.sect, param.size >> 1);
+
+ /* FORMAT */
+ printf("Formatting... ");
+ xioctl(fd, FDFMTBEG, NULL, "FDFMTBEG");
+
+ /* n == track */
+ for (n = 0; n < param.track; n++) {
+ descr.head = 0;
+ descr.track = n;
+ xioctl(fd, FDFMTTRK, &descr, "FDFMTTRK");
+ printf("%3d\b\b\b", n);
+ if (param.head == 2) {
+ descr.head = 1;
+ xioctl(fd, FDFMTTRK, &descr, "FDFMTTRK");
+ }
+ }
+
+ xioctl(fd, FDFMTEND, NULL, "FDFMTEND");
+ printf("done\n");
+
+ /* VERIFY */
+ if (verify) {
+ /* n == cyl_size */
+ n = param.sect*param.head*512;
+
+ data = xmalloc(n);
+ printf("Verifying... ");
+ for (cyl = 0; cyl < param.track; cyl++) {
+ printf("%3d\b\b\b", cyl);
+ read_bytes = safe_read(fd, data, n);
+ if (read_bytes != n) {
+ if (read_bytes < 0) {
+ bb_perror_msg(bb_msg_read_error);
+ }
+ bb_error_msg_and_die("problem reading cylinder %d, "
+ "expected %d, read %d", cyl, n, read_bytes);
+ // FIXME: maybe better seek & continue??
+ }
+ /* Check backwards so we don't need a counter */
+ while (--read_bytes >= 0) {
+ if (data[read_bytes] != FD_FILL_BYTE) {
+ printf("bad data in cyl %d\nContinuing... ",cyl);
+ }
+ }
+ }
+ /* There is no point in freeing blocks at the end of a program, because
+ all of the program's space is given back to the system when the process
+ terminates.*/
+
+ if (ENABLE_FEATURE_CLEAN_UP) free(data);
+
+ printf("done\n");
+ }
+
+ if (ENABLE_FEATURE_CLEAN_UP) close(fd);
+
+ /* Don't bother closing. Exit does
+ * that, so we can save a few bytes */
+ return EXIT_SUCCESS;
+}