mtd-utils: Restructure the mtd-utils source.

* There is no code modification in this commit, only moving
* the files to proper place.

The user tools looks a little messy as we place almost
the all tools in the root directory of mtd-utils. To make
it more clear, I propose to introduce the following structure
for our source code.

mtd-utils/
	|-- lib
	|-- include
	|-- misc-utils
	|-- jffsX-utils
	|-- nand-utils
	|-- nor-utils
	|-- ubi-utils
	|-- ubifs-utils
	`-- tests

Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

1 files changed, 217 insertions, 0 deletions

diff --git a/misc-utils/ftl_check.c b/misc-utils/ftl_check.c
new file mode 100644
index 0000000..0eada8f
--- /dev/null
+++ b/misc-utils/ftl_check.c
@@ -0,0 +1,217 @@
+/* Ported to MTD system.
+ * Based on:
+ */
+/*======================================================================
+
+  Utility to create an FTL partition in a memory region
+
+  ftl_check.c 1.10 1999/10/25 20:01:35
+
+  The contents of this file are subject to the Mozilla Public
+  License Version 1.1 (the "License"); you may not use this file
+  except in compliance with the License. You may obtain a copy of
+  the License at http://www.mozilla.org/MPL/
+
+  Software distributed under the License is distributed on an "AS
+  IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+  implied. See the License for the specific language governing
+  rights and limitations under the License.
+
+  The initial developer of the original code is David A. Hinds
+  <dhinds@pcmcia.sourceforge.org>.  Portions created by David A. Hinds
+  are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
+
+  Alternatively, the contents of this file may be used under the
+  terms of the GNU Public License version 2 (the "GPL"), in which
+  case the provisions of the GPL are applicable instead of the
+  above.  If you wish to allow the use of your version of this file
+  only under the terms of the GPL and not to allow others to use
+  your version of this file under the MPL, indicate your decision
+  by deleting the provisions above and replace them with the notice
+  and other provisions required by the GPL.  If you do not delete
+  the provisions above, a recipient may use your version of this
+  file under either the MPL or the GPL.
+
+  ======================================================================*/
+
+#define PROGRAM_NAME "ftl_check"
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+
+#include <mtd/mtd-user.h>
+#include <mtd/ftl-user.h>
+#include <mtd_swab.h>
+
+#include "common.h"
+
+/*====================================================================*/
+
+static void print_size(u_int s)
+{
+	if ((s > 0x100000) && ((s % 0x100000) == 0))
+		printf("%d mb", s / 0x100000);
+	else if ((s > 0x400) && ((s % 0x400) == 0))
+		printf("%d kb", s / 0x400);
+	else
+		printf("%d bytes", s);
+}
+
+/*====================================================================*/
+
+static void check_partition(int fd)
+{
+	mtd_info_t mtd;
+	erase_unit_header_t hdr, hdr2;
+	off_t i;
+	u_int j, nbam, *bam;
+	int control, data, free, deleted;
+
+	/* Get partition size, block size */
+	if (ioctl(fd, MEMGETINFO, &mtd) != 0) {
+		perror("get info failed");
+		return;
+	}
+
+	printf("Memory region info:\n");
+	printf("  Region size = ");
+	print_size(mtd.size);
+	printf("  Erase block size = ");
+	print_size(mtd.erasesize);
+	printf("\n\n");
+
+	for (i = 0; i < mtd.size/mtd.erasesize; i++) {
+		if (lseek(fd, (i * mtd.erasesize), SEEK_SET) == -1) {
+			perror("seek failed");
+			break;
+		}
+		read(fd, &hdr, sizeof(hdr));
+		if ((le32_to_cpu(hdr.FormattedSize) > 0) &&
+				(le32_to_cpu(hdr.FormattedSize) <= mtd.size) &&
+				(le16_to_cpu(hdr.NumEraseUnits) > 0) &&
+				(le16_to_cpu(hdr.NumEraseUnits) <= mtd.size/mtd.erasesize))
+			break;
+	}
+	if (i == mtd.size/mtd.erasesize) {
+		fprintf(stderr, "No valid erase unit headers!\n");
+		return;
+	}
+
+	printf("Partition header:\n");
+	printf("  Formatted size = ");
+	print_size(le32_to_cpu(hdr.FormattedSize));
+	printf(", erase units = %d, transfer units = %d\n",
+			le16_to_cpu(hdr.NumEraseUnits), hdr.NumTransferUnits);
+	printf("  Erase unit size = ");
+	print_size(1 << hdr.EraseUnitSize);
+	printf(", virtual block size = ");
+	print_size(1 << hdr.BlockSize);
+	printf("\n");
+
+	/* Create basic block allocation table for control blocks */
+	nbam = (mtd.erasesize >> hdr.BlockSize);
+	bam = malloc(nbam * sizeof(u_int));
+
+	for (i = 0; i < le16_to_cpu(hdr.NumEraseUnits); i++) {
+		if (lseek(fd, (i << hdr.EraseUnitSize), SEEK_SET) == -1) {
+			perror("seek failed");
+			break;
+		}
+		if (read(fd, &hdr2, sizeof(hdr2)) == -1) {
+			perror("read failed");
+			break;
+		}
+		printf("\nErase unit %"PRIdoff_t":\n", i);
+		if ((hdr2.FormattedSize != hdr.FormattedSize) ||
+				(hdr2.NumEraseUnits != hdr.NumEraseUnits) ||
+				(hdr2.SerialNumber != hdr.SerialNumber))
+			printf("  Erase unit header is corrupt.\n");
+		else if (le16_to_cpu(hdr2.LogicalEUN) == 0xffff)
+			printf("  Transfer unit, erase count = %d\n", le32_to_cpu(hdr2.EraseCount));
+		else {
+			printf("  Logical unit %d, erase count = %d\n",
+					le16_to_cpu(hdr2.LogicalEUN), le32_to_cpu(hdr2.EraseCount));
+			if (lseek(fd, (i << hdr.EraseUnitSize)+le32_to_cpu(hdr.BAMOffset),
+						SEEK_SET) == -1) {
+				perror("seek failed");
+				break;
+			}
+			if (read(fd, bam, nbam * sizeof(u_int)) == -1) {
+				perror("read failed");
+				break;
+			}
+			free = deleted = control = data = 0;
+			for (j = 0; j < nbam; j++) {
+				if (BLOCK_FREE(le32_to_cpu(bam[j])))
+					free++;
+				else if (BLOCK_DELETED(le32_to_cpu(bam[j])))
+					deleted++;
+				else switch (BLOCK_TYPE(le32_to_cpu(bam[j]))) {
+					case BLOCK_CONTROL: control++; break;
+					case BLOCK_DATA: data++; break;
+					default: break;
+				}
+			}
+			printf("  Block allocation: %d control, %d data, %d free,"
+					" %d deleted\n", control, data, free, deleted);
+		}
+	}
+} /* format_partition */
+
+/* Show usage information */
+void showusage(void)
+{
+	fprintf(stderr, "usage: %s device\n", PROGRAM_NAME);
+}
+
+/*====================================================================*/
+
+int main(int argc, char *argv[])
+{
+	int optch, errflg, fd;
+	struct stat buf;
+
+	errflg = 0;
+	while ((optch = getopt(argc, argv, "h")) != -1) {
+		switch (optch) {
+			case 'h':
+				errflg = 1; break;
+			default:
+				errflg = -1; break;
+		}
+	}
+	if (errflg || (optind != argc-1)) {
+		showusage();
+		exit(errflg > 0 ? 0 : EXIT_FAILURE);
+	}
+
+	if (stat(argv[optind], &buf) != 0) {
+		perror("status check failed");
+		exit(EXIT_FAILURE);
+	}
+	if (!(buf.st_mode & S_IFCHR)) {
+		fprintf(stderr, "%s is not a character special device\n",
+				argv[optind]);
+		exit(EXIT_FAILURE);
+	}
+	fd = open(argv[optind], O_RDONLY);
+	if (fd == -1) {
+		perror("open failed");
+		exit(EXIT_FAILURE);
+	}
+
+	check_partition(fd);
+	close(fd);
+
+	exit(EXIT_SUCCESS);
+	return 0;
+}