various updates

[project/fstools.git] / lib / mtd.c

diff --git a/lib/mtd.c b/lib/mtd.c
deleted file mode 100644 (file)
index 0036078..0000000
--- a/lib/mtd.c
+++ /dev/null
@@ -1,201 +0,0 @@
-/*
- * Copyright (C) 2014 John Crispin <blogic@openwrt.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1
- * as published by the Free Software Foundation
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <sys/stat.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <asm/byteorder.h>
-#include <mtd/mtd-user.h>
-
-#include <errno.h>
-#include <glob.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <libgen.h>
-#include <unistd.h>
-#include <string.h>
-
-#include "../fs-state.h"
-#include "mtd.h"
-
-#define PATH_MAX       256
-
-int mtdsize = 0;
-int erasesize = 0;
-
-int
-mtd_open(const char *mtd, int block)
-{
-       FILE *fp;
-       char dev[PATH_MAX];
-       int i, ret, flags = O_RDWR | O_SYNC;
-
-       if ((fp = fopen("/proc/mtd", "r"))) {
-               while (fgets(dev, sizeof(dev), fp)) {
-                       if (sscanf(dev, "mtd%d:", &i) && strstr(dev, mtd)) {
-                               snprintf(dev, sizeof(dev), "/dev/mtd%s/%d", (block ? "block" : ""), i);
-                               ret = open(dev, flags);
-                               if (ret < 0) {
-                                       snprintf(dev, sizeof(dev), "/dev/mtd%s%d", (block ? "block" : ""), i);
-                                       ret = open(dev, flags);
-                               }
-                               fclose(fp);
-                               return ret;
-                       }
-               }
-               fclose(fp);
-       }
-
-       return open(mtd, flags);
-}
-
-int
-mtd_load(const char *mtd)
-{
-       struct mtd_info_user mtdInfo;
-       struct erase_info_user mtdLockInfo;
-       int fd;
-
-       fd = mtd_open(mtd, 0);
-       if (fd < 0) {
-               fprintf(stderr, "Could not open mtd device: %s\n", mtd);
-               return -1;
-       }
-
-       if (ioctl(fd, MEMGETINFO, &mtdInfo)) {
-               fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
-               close(fd);
-               return -1;
-       }
-
-       mtdsize = mtdInfo.size;
-       erasesize = mtdInfo.erasesize;
-
-       mtdLockInfo.start = 0;
-       mtdLockInfo.length = mtdsize;
-       ioctl(fd, MEMUNLOCK, &mtdLockInfo);
-
-       return fd;
-}
-
-void
-mtd_erase(int fd, int first_block, int num_blocks)
-{
-       struct erase_info_user eiu;
-
-       eiu.length = erasesize;
-       for (eiu.start = first_block * erasesize;
-                       eiu.start < mtdsize && eiu.start < (first_block + num_blocks) * erasesize;
-                       eiu.start += erasesize) {
-               fprintf(stderr, "erasing %x %x\n", eiu.start, erasesize);
-               ioctl(fd, MEMUNLOCK, &eiu);
-               if (ioctl(fd, MEMERASE, &eiu))
-                       fprintf(stderr, "Failed to erase block at 0x%x\n", eiu.start);
-       }
-}
-
-int
-mtd_unlock(int fd)
-{
-       struct mtd_info_user mtdinfo;
-       int ret = ioctl(fd, MEMGETINFO, &mtdinfo);
-
-       if (ret) {
-               fprintf(stderr, "ioctl(%d, MEMGETINFO) failed: %s\n", fd, strerror(errno));
-       } else {
-               struct erase_info_user mtdlock;
-
-               mtdlock.start = 0;
-               mtdlock.length = mtdinfo.size;
-               ioctl(fd, MEMUNLOCK, &mtdlock);
-       }
-
-       return ret;
-}
-
-int
-mtd_read_buffer(int fd, void *buf, int offset, int length)
-{
-       if (lseek(fd, offset, SEEK_SET) == (off_t) -1) {
-               fprintf(stderr, "lseek/read failed\n");
-               return -1;
-       }
-
-       if (read(fd, buf, length) == -1) {
-               fprintf(stderr, "read failed\n");
-               return -1;
-       }
-
-       return 0;
-}
-
-int
-mtd_write_buffer(int fd, void *buf, int offset, int length)
-{
-       if (lseek(fd, offset, SEEK_SET) == (off_t) -1) {
-               fprintf(stderr, "lseek/write failed at offset %d\n", offset);
-               perror("lseek");
-               return -1;
-       }
-
-       if (write(fd, buf, length) == -1) {
-               fprintf(stderr, "write failed\n");
-               return -1;
-       }
-
-       return 0;
-}
-
-int
-mtd_identify(char *mtd)
-{
-       int fd = mtd_load(mtd);
-       __u32 deadc0de;
-       __u16 jffs2;
-       size_t sz;
-
-       if (!fd) {
-               fprintf(stderr, "reading %s failed\n", mtd);
-               return -1;
-       }
-
-       sz = read(fd, &deadc0de, sizeof(deadc0de));
-       close(fd);
-
-       if (sz != sizeof(deadc0de)) {
-               fprintf(stderr, "reading %s failed: %s\n", mtd, strerror(errno));
-               return -1;
-       }
-
-       if (deadc0de == 0x4f575254)
-               return FS_SNAPSHOT;
-
-       deadc0de = __be32_to_cpu(deadc0de);
-       jffs2 = __be16_to_cpu(deadc0de >> 16);
-
-       if (jffs2 == 0x1985) {
-               fprintf(stderr, "jffs2 is ready\n");
-               return FS_JFFS2;
-       }
-
-       if (deadc0de == 0xdeadc0de) {
-               fprintf(stderr, "jffs2 is not ready - marker found\n");
-               return FS_DEADCODE;
-       }
-
-       fprintf(stderr, "No jffs2 marker was found\n");
-
-       return FS_NONE;
-}