From 4153c0adff074167f1eb934235129471d2c04199 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 2 Jan 2015 21:52:35 +0000 Subject: kernel: move mtdsplit files to drivers/mtd/mtdsplit/ to simplify maintenance, unify patches across kernel versions Signed-off-by: Felix Fietkau SVN-Revision: 43805 --- target/linux/generic/files/drivers/mtd/mtdsplit.c | 116 ---------------------- 1 file changed, 116 deletions(-) delete mode 100644 target/linux/generic/files/drivers/mtd/mtdsplit.c (limited to 'target/linux/generic/files/drivers/mtd/mtdsplit.c') diff --git a/target/linux/generic/files/drivers/mtd/mtdsplit.c b/target/linux/generic/files/drivers/mtd/mtdsplit.c deleted file mode 100644 index 162739f..0000000 --- a/target/linux/generic/files/drivers/mtd/mtdsplit.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - * Copyright (C) 2009-2013 Felix Fietkau - * Copyright (C) 2009-2013 Gabor Juhos - * Copyright (C) 2012 Jonas Gorski - * Copyright (C) 2013 Hauke Mehrtens - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -#define pr_fmt(fmt) "mtdsplit: " fmt - -#include -#include -#include -#include -#include -#include -#include - -#include "mtdsplit.h" - -struct squashfs_super_block { - __le32 s_magic; - __le32 pad0[9]; - __le64 bytes_used; -}; - -int mtd_get_squashfs_len(struct mtd_info *master, - size_t offset, - size_t *squashfs_len) -{ - struct squashfs_super_block sb; - size_t retlen; - int err; - - err = mtd_read(master, offset, sizeof(sb), &retlen, (void *)&sb); - if (err || (retlen != sizeof(sb))) { - pr_alert("error occured while reading from \"%s\"\n", - master->name); - return -EIO; - } - - if (le32_to_cpu(sb.s_magic) != SQUASHFS_MAGIC) { - pr_alert("no squashfs found in \"%s\"\n", master->name); - return -EINVAL; - } - - retlen = le64_to_cpu(sb.bytes_used); - if (retlen <= 0) { - pr_alert("squashfs is empty in \"%s\"\n", master->name); - return -ENODEV; - } - - if (offset + retlen > master->size) { - pr_alert("squashfs has invalid size in \"%s\"\n", - master->name); - return -EINVAL; - } - - *squashfs_len = retlen; - return 0; -} -EXPORT_SYMBOL_GPL(mtd_get_squashfs_len); - -static ssize_t mtd_next_eb(struct mtd_info *mtd, size_t offset) -{ - return mtd_rounddown_to_eb(offset, mtd) + mtd->erasesize; -} - -int mtd_check_rootfs_magic(struct mtd_info *mtd, size_t offset) -{ - u32 magic; - size_t retlen; - int ret; - - ret = mtd_read(mtd, offset, sizeof(magic), &retlen, - (unsigned char *) &magic); - if (ret) - return ret; - - if (retlen != sizeof(magic)) - return -EIO; - - if (le32_to_cpu(magic) != SQUASHFS_MAGIC && - magic != 0x19852003) - return -EINVAL; - - return 0; -} -EXPORT_SYMBOL_GPL(mtd_check_rootfs_magic); - -int mtd_find_rootfs_from(struct mtd_info *mtd, - size_t from, - size_t limit, - size_t *ret_offset) -{ - size_t offset; - int err; - - for (offset = from; offset < limit; - offset = mtd_next_eb(mtd, offset)) { - err = mtd_check_rootfs_magic(mtd, offset); - if (err) - continue; - - *ret_offset = offset; - return 0; - } - - return -ENODEV; -} -EXPORT_SYMBOL_GPL(mtd_find_rootfs_from); - -- cgit v1.1