| /* |
| * Copyright 2011 Hauke Mehrtens <hauke@hauke-m.de> |
| * Copyright 2011 Alexey Dobriyan <adobriyan@gmail.com> |
| * |
| * 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. |
| * |
| * Backport functionality introduced in Linux 3.0. |
| */ |
| |
| #include <linux/compat.h> |
| #include <linux/if_ether.h> |
| |
| int mac_pton(const char *s, u8 *mac) |
| { |
| int i; |
| |
| /* XX:XX:XX:XX:XX:XX */ |
| if (strlen(s) < 3 * ETH_ALEN - 1) |
| return 0; |
| |
| /* Don't dirty result unless string is valid MAC. */ |
| for (i = 0; i < ETH_ALEN; i++) { |
| if (!strchr("0123456789abcdefABCDEF", s[i * 3])) |
| return 0; |
| if (!strchr("0123456789abcdefABCDEF", s[i * 3 + 1])) |
| return 0; |
| if (i != ETH_ALEN - 1 && s[i * 3 + 2] != ':') |
| return 0; |
| } |
| for (i = 0; i < ETH_ALEN; i++) { |
| mac[i] = (hex_to_bin(s[i * 3]) << 4) | hex_to_bin(s[i * 3 + 1]); |
| } |
| return 1; |
| } |
| EXPORT_SYMBOL_GPL(mac_pton); |
| |
| #define kstrto_from_user(f, g, type) \ |
| int f(const char __user *s, size_t count, unsigned int base, type *res) \ |
| { \ |
| /* sign, base 2 representation, newline, terminator */ \ |
| char buf[1 + sizeof(type) * 8 + 1 + 1]; \ |
| \ |
| count = min(count, sizeof(buf) - 1); \ |
| if (copy_from_user(buf, s, count)) \ |
| return -EFAULT; \ |
| buf[count] = '\0'; \ |
| return g(buf, base, res); \ |
| } \ |
| EXPORT_SYMBOL_GPL(f) |
| |
| kstrto_from_user(kstrtoull_from_user, kstrtoull, unsigned long long); |
| kstrto_from_user(kstrtoll_from_user, kstrtoll, long long); |
| kstrto_from_user(kstrtoul_from_user, kstrtoul, unsigned long); |
| kstrto_from_user(kstrtol_from_user, kstrtol, long); |
| kstrto_from_user(kstrtouint_from_user, kstrtouint, unsigned int); |
| kstrto_from_user(kstrtoint_from_user, kstrtoint, int); |
| kstrto_from_user(kstrtou16_from_user, kstrtou16, u16); |
| kstrto_from_user(kstrtos16_from_user, kstrtos16, s16); |
| kstrto_from_user(kstrtou8_from_user, kstrtou8, u8); |
| kstrto_from_user(kstrtos8_from_user, kstrtos8, s8); |