86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/*
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* Copyright 2011 Hauke Mehrtens <hauke@hauke-m.de>
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* Copyright 2011 Alexey Dobriyan <adobriyan@gmail.com>
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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 version 2 as
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* published by the Free Software Foundation.
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*
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* Compatibility file for Linux wireless for kernels 3.0.
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*/
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#include <linux/compat.h>
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#include <linux/if_ether.h>
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/* This pulls-in a lot of non-exported symbol backports
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* on kernels older than 2.6.32. There's no harm for not
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* making this available on kernels < 2.6.32. */
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
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#include <linux/pagemap.h>
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/* This backports:
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*
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* commit d9d90e5eb70e09903dadff42099b6c948f814050
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* Author: Hugh Dickins <hughd@google.com>
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* Date: Mon Jun 27 16:18:04 2011 -0700
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*
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* tmpfs: add shmem_read_mapping_page_gfp
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*/
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struct page *shmem_read_mapping_page_gfp(struct address_space *mapping,
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pgoff_t index, gfp_t gfp)
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{
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return read_cache_page_gfp(mapping, index, gfp);
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}
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EXPORT_SYMBOL_GPL(shmem_read_mapping_page_gfp);
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#endif
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int mac_pton(const char *s, u8 *mac)
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{
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int i;
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/* XX:XX:XX:XX:XX:XX */
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if (strlen(s) < 3 * ETH_ALEN - 1)
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return 0;
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/* Don't dirty result unless string is valid MAC. */
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for (i = 0; i < ETH_ALEN; i++) {
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if (!strchr("0123456789abcdefABCDEF", s[i * 3]))
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return 0;
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if (!strchr("0123456789abcdefABCDEF", s[i * 3 + 1]))
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return 0;
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if (i != ETH_ALEN - 1 && s[i * 3 + 2] != ':')
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return 0;
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}
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for (i = 0; i < ETH_ALEN; i++) {
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mac[i] = (hex_to_bin(s[i * 3]) << 4) | hex_to_bin(s[i * 3 + 1]);
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}
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return 1;
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}
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EXPORT_SYMBOL_GPL(mac_pton);
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#define kstrto_from_user(f, g, type) \
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int f(const char __user *s, size_t count, unsigned int base, type *res) \
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{ \
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/* sign, base 2 representation, newline, terminator */ \
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char buf[1 + sizeof(type) * 8 + 1 + 1]; \
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\
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count = min(count, sizeof(buf) - 1); \
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if (copy_from_user(buf, s, count)) \
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return -EFAULT; \
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buf[count] = '\0'; \
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return g(buf, base, res); \
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} \
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EXPORT_SYMBOL_GPL(f)
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kstrto_from_user(kstrtoull_from_user, kstrtoull, unsigned long long);
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kstrto_from_user(kstrtoll_from_user, kstrtoll, long long);
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kstrto_from_user(kstrtoul_from_user, kstrtoul, unsigned long);
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kstrto_from_user(kstrtol_from_user, kstrtol, long);
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kstrto_from_user(kstrtouint_from_user, kstrtouint, unsigned int);
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kstrto_from_user(kstrtoint_from_user, kstrtoint, int);
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kstrto_from_user(kstrtou16_from_user, kstrtou16, u16);
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kstrto_from_user(kstrtos16_from_user, kstrtos16, s16);
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kstrto_from_user(kstrtou8_from_user, kstrtou8, u8);
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kstrto_from_user(kstrtos8_from_user, kstrtos8, s8);
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