From 6dbe3af945a63f025561abb83275cee9ff06c57b Mon Sep 17 00:00:00 2001
From: Karel Zak
Date: Thu, 7 Dec 2006 00:25:32 +0100
Subject: Imported from util-linux-2.2 tarball.

---
 disk-utils/fdformat.c | 109 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 disk-utils/fdformat.c

(limited to 'disk-utils/fdformat.c')

diff --git a/disk-utils/fdformat.c b/disk-utils/fdformat.c
new file mode 100644
index 000000000..7fb78af6a
--- /dev/null
+++ b/disk-utils/fdformat.c
@@ -0,0 +1,109 @@
+/* fdformat.c  -  Low-level formats a floppy disk. */
+
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <linux/fd.h>
+#include <linux/fs.h>
+
+static int ctrl;
+struct floppy_struct param;
+
+#define FLOPPY_MAJOR 2
+#define SECTOR_SIZE 512
+#define PERROR(msg) { perror(msg); exit(1); }
+
+static void format_disk(char *name)
+{
+    struct format_descr descr;
+    int track;
+
+    printf("Formatting ... ");
+    fflush(stdout);
+    if (ioctl(ctrl,FDFMTBEG,NULL) < 0) PERROR("\nioctl(FDFMTBEG)");
+    for (track = 0; track < param.track; track++) {
+	descr.track = track;
+	descr.head = 0;
+	if (ioctl(ctrl,FDFMTTRK,(int) &descr) < 0) PERROR("\nioctl(FDFMTTRK)");
+	printf("%3d\b\b\b",track);
+	fflush(stdout);
+	if (param.head == 2) {
+	    descr.head = 1;
+	    if (ioctl(ctrl,FDFMTTRK,(int) &descr) < 0)
+		PERROR("\nioctl(FDFMTTRK)");
+	}
+    }
+    if (ioctl(ctrl,FDFMTEND,NULL) < 0) PERROR("\nioctl(FDFMTEND)");
+    printf("done\n");
+}
+
+
+static void verify_disk(char *name)
+{
+    unsigned char *data;
+    int fd,cyl_size,cyl,count;
+
+    cyl_size = param.sect*param.head*512;
+    if ((data = (unsigned char *) malloc(cyl_size)) == NULL) PERROR("malloc");
+    printf("Verifying ... ");
+    fflush(stdout);
+    if ((fd = open(name,O_RDONLY)) < 0) PERROR(name);
+    for (cyl = 0; cyl < param.track; cyl++) {
+	printf("%3d\b\b\b",cyl);
+	fflush(stdout);
+	if (read(fd,data,cyl_size) != cyl_size) PERROR("read");
+	for (count = 0; count < cyl_size; count++)
+	    if (data[count] != FD_FILL_BYTE) {
+		printf("bad data in cyl %d\nContinuing ... ",cyl);
+		fflush(stdout);
+		break;
+	    }
+    }
+    printf("done\n");
+    if (close(fd) < 0) PERROR("close");
+}
+
+
+static void usage(char *name)
+{
+    char *this;
+
+    if (this = strrchr(name,'/')) name = this+1;
+    fprintf(stderr,"usage: %s [ -n ] device\n",name);
+    exit(1);
+}
+
+
+int main(int argc,char **argv)
+{
+    int verify;
+    char *name;
+    struct stat st;
+
+    name = argv[0];
+    verify = 1;
+    if (argc > 1 && argv[1][0] == '-') {
+	if (argv[1][1] != 'n') usage(name);
+	verify = 0;
+	argc--;
+	argv++;
+    }
+    if (argc != 2) usage(name);
+    if (lstat(argv[1],&st) < 0) PERROR(argv[1]);
+    if (!S_ISBLK(st.st_mode) || MAJOR(st.st_rdev) != FLOPPY_MAJOR) {
+	fprintf(stderr,"%s: not a floppy device\n",argv[1]);
+	exit(1);
+    }
+    if (access(argv[1],W_OK) < 0) PERROR(argv[1]);
+    if ((ctrl = open(argv[1],3)) < 0) PERROR(argv[1]);
+    if (ioctl(ctrl,FDGETPRM,(int) &param) < 0) PERROR("ioctl(FDGETPRM)");
+    printf("%sle-sided, %d tracks, %d sec/track. Total capacity %d kB.\n",
+      param.head ? "Doub" : "Sing",param.track,param.sect,param.size >> 1);
+    format_disk(argv[1]);
+    if (verify) verify_disk(argv[1]);
+    return 0;
+}
-- 
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