target/linux/generic/files/drivers/mtd/mtdsplit.h

   1 /*
   2  * Copyright (C) 2009-2013 Felix Fietkau <nbd@openwrt.org>
   3  * Copyright (C) 2009-2013 Gabor Juhos <juhosg@openwrt.org>
   4  * Copyright (C) 2012 Jonas Gorski <jogo@openwrt.org>
   5  * Copyright (C) 2013 Hauke Mehrtens <hauke@hauke-m.de>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 as published
   9  * by the Free Software Foundation.
  10  *
  11  */
  12
  13 #ifndef _MTDSPLIT_H
  14 #define _MTDSPLIT_H
  15
  16 #define ROOTFS_SPLIT_NAME       "rootfs_data"
  17
  18 #ifdef CONFIG_MTD_SPLIT
  19 int mtd_get_squashfs_len(struct mtd_info *master,
  20                          size_t offset,
  21                          size_t *squashfs_len);
  22
  23 int mtd_check_rootfs_magic(struct mtd_info *mtd, size_t offset);
  24
  25 int mtd_find_rootfs_from(struct mtd_info *mtd,
  26                          size_t from,
  27                          size_t limit,
  28                          size_t *ret_offset);
  29
  30 #else
  31 static inline int mtd_get_squashfs_len(struct mtd_info *master,
  32                                        size_t offset,
  33                                        size_t *squashfs_len)
  34 {
  35         return -ENODEV;
  36 }
  37
  38 static inline int mtd_check_rootfs_magic(struct mtd_info *mtd, size_t offset)
  39 {
  40         return -EINVAL;
  41 }
  42
  43 static inline int mtd_find_rootfs_from(struct mtd_info *mtd,
  44                                        size_t from,
  45                                        size_t limit,
  46                                        size_t *ret_offset)
  47 {
  48         return -ENODEV;
  49 }
  50 #endif /* CONFIG_MTD_SPLIT */
  51
  52 #endif /* _MTDSPLIT_H */