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Diffstat (limited to 'ubi-utils/new-utils/src/libmtd.c')
-rw-r--r--ubi-utils/new-utils/src/libmtd.c314
1 files changed, 0 insertions, 314 deletions
diff --git a/ubi-utils/new-utils/src/libmtd.c b/ubi-utils/new-utils/src/libmtd.c
deleted file mode 100644
index b60ddbd..0000000
--- a/ubi-utils/new-utils/src/libmtd.c
+++ /dev/null
@@ -1,314 +0,0 @@
-/*
- * Copyright (C) 2008 Nokia Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Author: Artem Bityutskiy
- *
- * MTD library.
- */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <unistd.h>
-#include <fcntl.h>
-
-#include <mtd/mtd-user.h>
-#include <libmtd.h>
-#include "common.h"
-
-#define PROGRAM_NAME "libmtd"
-#define MTD_DEV_MAJOR 90
-
-/**
- * mtd_get_info - get information about an MTD device.
- * @node: name of the MTD device node
- * @mtd: the MTD device information is returned here
- *
- * This function gets information about MTD device defined by the @node device
- * node file and saves this information in the @mtd object. Returns %0 in case
- * of success and %-1 in case of failure.
- */
-int mtd_get_info(const char *node, struct mtd_info *mtd)
-{
- struct stat st;
- struct mtd_info_user ui;
- int ret;
- loff_t offs = 0;
-
- if (stat(node, &st))
- return sys_errmsg("cannot open \"%s\"", node);
-
- if (!S_ISCHR(st.st_mode)) {
- errno = EINVAL;
- return errmsg("\"%s\" is not a character device", node);
- }
-
- mtd->major = major(st.st_rdev);
- mtd->minor = minor(st.st_rdev);
-
- if (mtd->major != MTD_DEV_MAJOR) {
- errno = EINVAL;
- return errmsg("\"%s\" has major number %d, MTD devices have "
- "major %d", node, mtd->major, MTD_DEV_MAJOR);
- }
-
- mtd->num = mtd->minor / 2;
- mtd->rdonly = mtd->minor & 1;
-
- mtd->fd = open(node, O_RDWR);
- if (mtd->fd == -1)
- return sys_errmsg("cannot open \"%s\"", node);
-
- if (ioctl(mtd->fd, MEMGETINFO, &ui)) {
- sys_errmsg("MEMGETINFO ioctl request failed");
- goto out_close;
- }
-
- ret = ioctl(mtd->fd, MEMGETBADBLOCK, &offs);
- if (ret == -1) {
- if (errno != EOPNOTSUPP) {
- sys_errmsg("MEMGETBADBLOCK ioctl failed");
- goto out_close;
- }
- errno = 0;
- mtd->allows_bb = 0;
- } else
- mtd->allows_bb = 1;
-
- mtd->type = ui.type;
- mtd->size = ui.size;
- mtd->eb_size = ui.erasesize;
- mtd->min_io_size = ui.writesize;
-
- if (mtd->min_io_size <= 0) {
- errmsg("mtd%d (%s) has insane min. I/O unit size %d",
- mtd->num, node, mtd->min_io_size);
- goto out_close;
- }
- if (mtd->eb_size <= 0 || mtd->eb_size < mtd->min_io_size) {
- errmsg("mtd%d (%s) has insane eraseblock size %d",
- mtd->num, node, mtd->eb_size);
- goto out_close;
- }
- if (mtd->size <= 0 || mtd->size < mtd->eb_size) {
- errmsg("mtd%d (%s) has insane size %lld",
- mtd->num, node, mtd->size);
- goto out_close;
- }
- mtd->eb_cnt = mtd->size / mtd->eb_size;
-
- switch(mtd->type) {
- case MTD_ABSENT:
- errmsg("mtd%d (%s) is removable and is not present",
- mtd->num, node);
- goto out_close;
- case MTD_RAM:
- mtd->type_str = "RAM-based";
- break;
- case MTD_ROM:
- mtd->type_str = "ROM";
- break;
- case MTD_NORFLASH:
- mtd->type_str = "NOR";
- break;
- case MTD_NANDFLASH:
- mtd->type_str = "NAND";
- break;
- case MTD_DATAFLASH:
- mtd->type_str = "DataFlash";
- break;
- case MTD_UBIVOLUME:
- mtd->type_str = "UBI-emulated MTD";
- break;
- default:
- mtd->type_str = "Unknown flash type";
- break;
- }
-
- if (!(ui.flags & MTD_WRITEABLE))
- mtd->rdonly = 1;
-
- return 0;
-
-out_close:
- close(mtd->fd);
- return -1;
-}
-
-/**
- * mtd_erase - erase an eraseblock.
- * @mtd: MTD device description object
- * @eb: eraseblock to erase
- *
- * This function erases the eraseblock and returns %0 in case of success and
- * %-1 in case of failure.
- */
-int mtd_erase(const struct mtd_info *mtd, int eb)
-{
- struct erase_info_user ei;
-
- ei.start = eb * mtd->eb_size;;
- ei.length = mtd->eb_size;
- return ioctl(mtd->fd, MEMERASE, &ei);
-}
-
-/**
- * mtd_is_bad - check if eraseblock is bad.
- * @mtd: MTD device description object
- * @eb: eraseblock to check
- *
- * This function checks if eraseblock @eb is bad. Returns %0 if not, %1 if yes,
- * and %-1 in case of failure.
- */
-int mtd_is_bad(const struct mtd_info *mtd, int eb)
-{
- int ret;
- loff_t seek;
-
- if (eb < 0 || eb >= mtd->eb_cnt) {
- errmsg("bad eraseblock number %d, mtd%d has %d eraseblocks",
- eb, mtd->num, mtd->eb_cnt);
- errno = EINVAL;
- return -1;
- }
-
- if (!mtd->allows_bb)
- return 0;
-
- seek = (loff_t)eb * mtd->eb_size;
- ret = ioctl(mtd->fd, MEMGETBADBLOCK, &seek);
- if (ret == -1) {
- sys_errmsg("MEMGETBADBLOCK ioctl failed for "
- "eraseblock %d (mtd%d)", eb, mtd->num);
- return -1;
- }
-
- return ret;
-}
-
-/**
- * mtd_read - read data from an MTD device.
- * @mtd: MTD device description object
- * @eb: eraseblock to read from
- * @offs: offset withing the eraseblock to read from
- * @buf: buffer to read data to
- * @len: how many bytes to read
- *
- * This function reads @len bytes of data from eraseblock @eb and offset @offs
- * of the MTD device defined by @mtd and stores the read data at buffer @buf.
- * Returns %0 in case of success and %-1 in case of failure.
- */
-int mtd_read(const struct mtd_info *mtd, int eb, int offs, void *buf, int len)
-{
- int ret, rd = 0;
- off_t seek;
-
- if (eb < 0 || eb >= mtd->eb_cnt) {
- errmsg("bad eraseblock number %d, mtd%d has %d eraseblocks",
- eb, mtd->num, mtd->eb_cnt);
- errno = EINVAL;
- return -1;
- }
- if (offs < 0 || offs + len > mtd->eb_size) {
- errmsg("bad offset %d or length %d, mtd%d eraseblock size is %d",
- offs, len, mtd->num, mtd->eb_size);
- errno = EINVAL;
- return -1;
- }
-
- /* Seek to the beginning of the eraseblock */
- seek = (off_t)eb * mtd->eb_size + offs;
- if (lseek(mtd->fd, seek, SEEK_SET) != seek) {
- sys_errmsg("cannot seek mtd%d to offset %llu",
- mtd->num, (unsigned long long)seek);
- return -1;
- }
-
- while (rd < len) {
- ret = read(mtd->fd, buf, len);
- if (ret < 0) {
- sys_errmsg("cannot read %d bytes from mtd%d (eraseblock %d, offset %d)",
- len, mtd->num, eb, offs);
- return -1;
- }
- rd += ret;
- }
-
- return 0;
-}
-
-/**
- * mtd_write - write data to an MTD device.
- * @mtd: MTD device description object
- * @eb: eraseblock to write to
- * @offs: offset withing the eraseblock to write to
- * @buf: buffer to write
- * @len: how many bytes to write
- *
- * This function writes @len bytes of data to eraseblock @eb and offset @offs
- * of the MTD device defined by @mtd. Returns %0 in case of success and %-1 in
- * case of failure.
- */
-int mtd_write(const struct mtd_info *mtd, int eb, int offs, void *buf, int len)
-{
- int ret;
- off_t seek;
-
- if (eb < 0 || eb >= mtd->eb_cnt) {
- errmsg("bad eraseblock number %d, mtd%d has %d eraseblocks",
- eb, mtd->num, mtd->eb_cnt);
- errno = EINVAL;
- return -1;
- }
- if (offs < 0 || offs + len > mtd->eb_size) {
- errmsg("bad offset %d or length %d, mtd%d eraseblock size is %d",
- offs, len, mtd->num, mtd->eb_size);
- errno = EINVAL;
- return -1;
- }
-#if 0
- if (offs % mtd->subpage_size) {
- errmsg("write offset %d is not aligned to mtd%d min. I/O size %d",
- offs, mtd->num, mtd->subpage_size);
- errno = EINVAL;
- return -1;
- }
- if (len % mtd->subpage_size) {
- errmsg("write length %d is not aligned to mtd%d min. I/O size %d",
- len, mtd->num, mtd->subpage_size);
- errno = EINVAL;
- return -1;
- }
-#endif
-
- /* Seek to the beginning of the eraseblock */
- seek = (off_t)eb * mtd->eb_size + offs;
- if (lseek(mtd->fd, seek, SEEK_SET) != seek) {
- sys_errmsg("cannot seek mtd%d to offset %llu",
- mtd->num, (unsigned long long)seek);
- return -1;
- }
-
- ret = write(mtd->fd, buf, len);
- if (ret != len) {
- sys_errmsg("cannot write %d bytes to mtd%d (eraseblock %d, offset %d)",
- len, mtd->num, eb, offs);
- return -1;
- }
-
- return 0;
-}
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