From 606f38a2221648ca5c5fa292c9f71d2ddd59fa66 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Tue, 17 Mar 2009 10:14:54 +0200 Subject: ubi-utils: re-arrange directory layout Move new-utils to ubi-utils and old ones to ubi-utils/old-utils. Signed-off-by: Artem Bityutskiy --- ubi-utils/new-utils/src/libmtd.c | 314 --------------------------------------- 1 file changed, 314 deletions(-) delete mode 100644 ubi-utils/new-utils/src/libmtd.c (limited to 'ubi-utils/new-utils/src/libmtd.c') 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 -#include -#include -#include -#include - -#include -#include -#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; -} -- cgit v1.2.3