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void ansi_to_utf8(char *out, char *in, int *l) {
    *out++='\r';
    *out++='\n';
    int len=2;
    static const char table[128][4] = {
        "\2\xD0\x82","\2\xD0\x83","\3\xE2\x80\x9A","\2\xD1\x93",
        "\3\xE2\x80\x9E","\3\xE2\x80\xA6","\3\xE2\x80\xA0","\3\xE2\x80\xA1",
        "\3\xE2\x82\xAC","\3\xE2\x80\xB0","\2\xD0\x89","\3\xE2\x80\xB9",
        "\2\xD0\x8A","\2\xD0\x8C","\2\xD0\x8B","\2\xD0\x8F",
        "\2\xD1\x92","\3\xE2\x80\x98","\3\xE2\x80\x99","\3\xE2\x80\x9C",
        "\3\xE2\x80\x9D","\3\xE2\x80\xA2","\3\xE2\x80\x93","\3\xE2\x80\x94",
        "\0","\3\xE2\x84\xA2","\2\xD1\x99","\3\xE2\x80\xBA",
        "\2\xD1\x9A","\2\xD1\x9C","\2\xD1\x9B","\2\xD1\x9F",
        "\2\xC2\xA0","\2\xD0\x8E","\2\xD1\x9E","\2\xD0\x88",
        "\2\xC2\xA4","\2\xD2\x90","\2\xC2\xA6","\2\xC2\xA7",
        "\2\xD0\x81","\2\xC2\xA9","\2\xD0\x84","\2\xC2\xAB",
        "\2\xC2\xAC","\2\xC2\xAD","\2\xC2\xAE","\2\xD0\x87",
        "\2\xC2\xB0","\2\xC2\xB1","\2\xD0\x86","\2\xD1\x96",
        "\2\xD2\x91","\2\xC2\xB5","\2\xC2\xB6","\2\xC2\xB7",
        "\2\xD1\x91","\3\xE2\x84\x96","\2\xD1\x94","\2\xC2\xBB",
        "\2\xD1\x98","\2\xD0\x85","\2\xD1\x95","\2\xD1\x97",
        "\2\xD0\x90","\2\xD0\x91","\2\xD0\x92","\2\xD0\x93",
        "\2\xD0\x94","\2\xD0\x95","\2\xD0\x96","\2\xD0\x97",
        "\2\xD0\x98","\2\xD0\x99","\2\xD0\x9A","\2\xD0\x9B",
        "\2\xD0\x9C","\2\xD0\x9D","\2\xD0\x9E","\2\xD0\x9F",
        "\2\xD0\xA0","\2\xD0\xA1","\2\xD0\xA2","\2\xD0\xA3",
        "\2\xD0\xA4","\2\xD0\xA5","\2\xD0\xA6","\2\xD0\xA7",
        "\2\xD0\xA8","\2\xD0\xA9","\2\xD0\xAA","\2\xD0\xAB",
        "\2\xD0\xAC","\2\xD0\xAD","\2\xD0\xAE","\2\xD0\xAF",
        "\2\xD0\xB0","\2\xD0\xB1","\2\xD0\xB2","\2\xD0\xB3",
        "\2\xD0\xB4","\2\xD0\xB5","\2\xD0\xB6","\2\xD0\xB7",
        "\2\xD0\xB8","\2\xD0\xB9","\2\xD0\xBA","\2\xD0\xBB",
        "\2\xD0\xBC","\2\xD0\xBD","\2\xD0\xBE","\2\xD0\xBF",
        "\2\xD1\x80","\2\xD1\x81","\2\xD1\x82","\2\xD1\x83",
        "\2\xD1\x84","\2\xD1\x85","\2\xD1\x86","\2\xD1\x87",
        "\2\xD1\x88","\2\xD1\x89","\2\xD1\x8A","\2\xD1\x8B",
        "\2\xD1\x8C","\2\xD1\x8D","\2\xD1\x8E","\2\xD1\x8F"
    };
    while (*in) {
        if (*in & 0x80) {
              const char *p = table[(int)(0x7f & *in++)];
              if (!*p)
                continue;
              *out++ = p[1];
              len++;
              if (*p == 1)
                continue;
              *out++ = p[2];
              len++;
              if (*p == 2)
                continue;
              *out++ = p[3];
              len++;
        }
        else
        {
            *out++ = *in++;
            len++;
        }
    }
    *out = '\0';
    *l=len;
}

int main(void)
{
    char *path="/home/user/log";
    int l=strlen(path)*2+3;
    char *dst = (char*) malloc (l);
    ansi_to_utf8(dst, path, &l);

    printf("%s\r\n", dst);

    setlocale(LC_ALL, "ru_RU.UTF-8");
    long h = open(dst, O_WRONLY, 0777);

    if(h==-1)
        printf("%d\r\n%s\r\n", errno, strerror(errno));
    else 
        printf("%d\r\n%s\r\n", h, dst);
    free(dst);

    write(h, "qwerty", strlen("qwerty"));
    close(h);

    return 0;
}