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@ -1,5 +1,6 @@ |
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/*
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* Copyright © 2009 Christian Daniel <cd@maintech.de> |
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* Copyright (C) 2009 Christian Daniel <cd@maintech.de> |
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* Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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@ -22,11 +23,22 @@ |
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#include <linux/kernel.h> |
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#include <linux/slab.h> |
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#include <linux/vmalloc.h> |
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#include <linux/mtd/mtd.h> |
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#include <linux/mtd/partitions.h> |
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#include <linux/bootmem.h> |
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#include <linux/magic.h> |
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struct cybertan_header { |
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char magic[4]; |
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u8 res1[4]; |
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char fw_date[3]; |
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char fw_ver[3]; |
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char id[4]; |
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char hw_ver; |
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char unused; |
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u8 flags[2]; |
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u8 res2[10]; |
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}; |
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#define TRX_PARTS 6 |
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#define TRX_MAGIC 0x30524448 |
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@ -58,91 +70,117 @@ struct uimage_header { |
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uint8_t ih_name[IH_NMLEN]; /* Image Name */ |
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}; |
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struct wrt160nl_header { |
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struct cybertan_header cybertan; |
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struct trx_header trx; |
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struct uimage_header uimage; |
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} __attribute__ ((packed)); |
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static struct mtd_partition trx_parts[TRX_PARTS]; |
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static int create_mtd_partitions(struct mtd_info *master, |
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struct mtd_partition **pparts, |
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unsigned long origin) |
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static int wrt160nl_parse_partitions(struct mtd_info *master, |
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struct mtd_partition **pparts, |
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unsigned long origin) |
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{ |
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uint8_t buf[512]; |
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int len; |
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struct trx_header *header; |
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struct wrt160nl_header *header; |
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struct trx_header *theader; |
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struct uimage_header *uheader; |
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size_t retlen; |
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unsigned int kernel_len; |
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int ret; |
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header = vmalloc(sizeof(*header)); |
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if (!header) { |
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return -ENOMEM; |
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goto out; |
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} |
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ret = master->read(master, 4 * master->erasesize, sizeof(*header), |
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&retlen, (void *) header); |
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if (ret) |
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goto free_hdr; |
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master->read(master, 4 * master->erasesize, sizeof(buf), &len, buf); |
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if (strncmp(buf, "NL16", 4) == 0) { |
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printk(KERN_INFO "TRX on WRT160NL detected\n"); |
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if (retlen != sizeof(*header)) { |
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ret = -EIO; |
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goto free_hdr; |
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} |
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header = (struct trx_header *)(buf + 32); |
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if (le32_to_cpu(header->magic) != TRX_MAGIC) { |
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printk(KERN_WARNING "TRX messed up\n"); |
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return 0; |
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} |
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if (strncmp(header->cybertan.magic, "NL16", 4) != 0) { |
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printk(KERN_NOTICE "%s: no WRT160NL signature found\n", |
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master->name); |
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goto free_hdr; |
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} |
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uheader = (struct uimage_header *)(buf + 60); |
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if (uheader->ih_magic != IH_MAGIC) { |
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printk(KERN_WARNING "uImage messed up\n"); |
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return 0; |
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} |
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theader = &header->trx; |
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if (le32_to_cpu(theader->magic) != TRX_MAGIC) { |
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printk(KERN_NOTICE "%s: no TRX header found\n", master->name); |
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goto free_hdr; |
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} |
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kernel_len = uheader->ih_size / master->erasesize; |
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if (uheader->ih_size % master->erasesize) |
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kernel_len++; |
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uheader = &header->uimage; |
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if (uheader->ih_magic != IH_MAGIC) { |
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printk(KERN_NOTICE "%s: no uImage found\n", master->name); |
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goto free_hdr; |
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} |
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kernel_len = uheader->ih_size / master->erasesize; |
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if (uheader->ih_size % master->erasesize) |
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kernel_len++; |
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kernel_len *= master->erasesize; |
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trx_parts[0].name = "u-boot"; |
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trx_parts[0].offset = 0; |
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trx_parts[0].size = 4 * master->erasesize; |
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trx_parts[0].mask_flags = MTD_WRITEABLE; |
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trx_parts[1].name = "kernel"; |
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trx_parts[1].offset = trx_parts[0].offset + trx_parts[0].size; |
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trx_parts[1].size = kernel_len; |
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trx_parts[1].mask_flags = 0; |
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trx_parts[2].name = "rootfs"; |
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trx_parts[2].offset = trx_parts[1].offset + trx_parts[1].size; |
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trx_parts[2].size = master->size - 6 * master->erasesize - trx_parts[1].size; |
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trx_parts[2].mask_flags = 0; |
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trx_parts[3].name = "nvram"; |
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trx_parts[3].offset = master->size - 2 * master->erasesize; |
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trx_parts[3].size = master->erasesize; |
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trx_parts[3].mask_flags = MTD_WRITEABLE; |
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trx_parts[4].name = "art"; |
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trx_parts[4].offset = master->size - master->erasesize; |
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trx_parts[4].size = master->erasesize; |
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trx_parts[4].mask_flags = MTD_WRITEABLE; |
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trx_parts[5].name = "firmware"; |
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trx_parts[5].offset = 4 * master->erasesize; |
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trx_parts[5].size = master->size - 6 * master->erasesize; |
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trx_parts[5].mask_flags = 0; |
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*pparts = trx_parts; |
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return TRX_PARTS; |
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} else { |
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return 0; |
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} |
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kernel_len++; |
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kernel_len *= master->erasesize; |
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trx_parts[0].name = "u-boot"; |
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trx_parts[0].offset = 0; |
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trx_parts[0].size = 4 * master->erasesize; |
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trx_parts[0].mask_flags = MTD_WRITEABLE; |
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trx_parts[1].name = "kernel"; |
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trx_parts[1].offset = trx_parts[0].offset + trx_parts[0].size; |
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trx_parts[1].size = kernel_len; |
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trx_parts[1].mask_flags = 0; |
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trx_parts[2].name = "rootfs"; |
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trx_parts[2].offset = trx_parts[1].offset + trx_parts[1].size; |
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trx_parts[2].size = master->size - 6 * master->erasesize - trx_parts[1].size; |
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trx_parts[2].mask_flags = 0; |
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trx_parts[3].name = "nvram"; |
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trx_parts[3].offset = master->size - 2 * master->erasesize; |
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trx_parts[3].size = master->erasesize; |
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trx_parts[3].mask_flags = MTD_WRITEABLE; |
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trx_parts[4].name = "art"; |
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trx_parts[4].offset = master->size - master->erasesize; |
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trx_parts[4].size = master->erasesize; |
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trx_parts[4].mask_flags = MTD_WRITEABLE; |
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trx_parts[5].name = "firmware"; |
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trx_parts[5].offset = 4 * master->erasesize; |
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trx_parts[5].size = master->size - 6 * master->erasesize; |
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trx_parts[5].mask_flags = 0; |
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*pparts = trx_parts; |
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ret = TRX_PARTS; |
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free_hdr: |
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vfree(header); |
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out: |
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return ret; |
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} |
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static struct mtd_part_parser trx_parser = { |
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static struct mtd_part_parser wrt160nl_parser = { |
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.owner = THIS_MODULE, |
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.parse_fn = create_mtd_partitions, |
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.parse_fn = wrt160nl_parse_partitions, |
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.name = "wrt160nl", |
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}; |
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static int __init trx_parser_init(void) |
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static int __init wrt160nl_parser_init(void) |
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{ |
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return register_mtd_parser(&trx_parser); |
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return register_mtd_parser(&wrt160nl_parser); |
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} |
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module_init(trx_parser_init); |
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module_init(wrt160nl_parser_init); |
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MODULE_LICENSE("GPL"); |
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MODULE_AUTHOR("Christian Daniel <cd@maintech.de>"); |
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