forked from luck/tmp_suning_uos_patched
net: core: use kernel's converter from hex to bin
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -729,16 +729,14 @@ static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
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*num = 0;
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for (; i < maxlen; i++) {
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int value;
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char c;
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*num <<= 4;
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if (get_user(c, &user_buffer[i]))
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return -EFAULT;
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if ((c >= '0') && (c <= '9'))
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*num |= c - '0';
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else if ((c >= 'a') && (c <= 'f'))
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*num |= c - 'a' + 10;
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else if ((c >= 'A') && (c <= 'F'))
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*num |= c - 'A' + 10;
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value = hex_to_bin(c);
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if (value >= 0)
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*num |= value;
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else
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break;
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}
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@ -92,18 +92,19 @@ EXPORT_SYMBOL(in_aton);
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static inline int xdigit2bin(char c, int delim)
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{
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int val;
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if (c == delim || c == '\0')
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return IN6PTON_DELIM;
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if (c == ':')
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return IN6PTON_COLON_MASK;
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if (c == '.')
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return IN6PTON_DOT;
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if (c >= '0' && c <= '9')
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return (IN6PTON_XDIGIT | IN6PTON_DIGIT| (c - '0'));
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if (c >= 'a' && c <= 'f')
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return (IN6PTON_XDIGIT | (c - 'a' + 10));
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if (c >= 'A' && c <= 'F')
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return (IN6PTON_XDIGIT | (c - 'A' + 10));
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val = hex_to_bin(c);
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if (val >= 0)
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return val | IN6PTON_XDIGIT | (val < 10 ? IN6PTON_DIGIT : 0);
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if (delim == -1)
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return IN6PTON_DELIM;
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return IN6PTON_UNKNOWN;
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