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    aid_t req;
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    aid_t req;
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    ipc_call_t answer;
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    ipc_call_t answer;
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    int phone;
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    int phone;
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    ipcarg_t callback_phonehash;
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    ipcarg_t callback_phonehash;
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    phone = ipc_connect_me_to(PHONE_NS, SERVICE_DEVMAP, DEVMAP_DRIVER, 0);
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    phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_DEVMAP, DEVMAP_DRIVER, 0);
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 - 
 
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    while (phone < 0) {
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    if (phone < 0) {
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        usleep(100000);
 - 
 
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        phone = ipc_connect_me_to(PHONE_NS, SERVICE_DEVMAP,
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        printf("Failed to connect to device mapper\n");
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            DEVMAP_DRIVER, 0);
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        return -1;
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    }
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    }
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    req = async_send_2(phone, DEVMAP_DRIVER_REGISTER, 0, 0, &answer);
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    req = async_send_2(phone, DEVMAP_DRIVER_REGISTER, 0, 0, &answer);
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    retval = ipc_data_write_start(phone, (char *)name, strlen(name) + 1);
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    retval = ipc_data_write_start(phone, (char *)name, strlen(name) + 1);