Merge "Remove unused cruft from libcutils."

/*

 * Copyright (C) 2007 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#ifndef __CUTILS_CPU_INFO_H

#define __CUTILS_CPU_INFO_H

#ifdef __cplusplus

extern "C" {

#endif

/* returns a string contiaining an ASCII representation of the CPU serial number, 

** or NULL if cpu info not available.

** The string is a static variable, so don't call free() on it.

*/

extern const char* get_cpu_serial_number(void);

#ifdef __cplusplus

}

#endif

#endif /* __CUTILS_CPU_INFO_H */ 

	atomic.c.arm \

	native_handle.c \

	config_utils.c \

	cpu_info.c \

	load_file.c \

	open_memstream.c \

	strdup16to8.c \

/*

** Copyright 2007, The Android Open Source Project

**

** Licensed under the Apache License, Version 2.0 (the "License"); 

** you may not use this file except in compliance with the License. 

** You may obtain a copy of the License at 

**

**     http://www.apache.org/licenses/LICENSE-2.0 

**

** Unless required by applicable law or agreed to in writing, software 

** distributed under the License is distributed on an "AS IS" BASIS, 

** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

** See the License for the specific language governing permissions and 

** limitations under the License.

*/

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <cutils/cpu_info.h>

// we cache the serial number here.

// this is also used as a fgets() line buffer when we are reading /proc/cpuinfo

static char serial_number[100] = { 0 };

extern const char* get_cpu_serial_number(void)

{

    if (serial_number[0] == 0)

    {

        FILE* file;

        char* chp, *end;

        char* whitespace;

        // read serial number from /proc/cpuinfo

        file = fopen("proc/cpuinfo", "r");

        if (! file)

            return NULL;

        while ((chp = fgets(serial_number, sizeof(serial_number), file)) != NULL)

        {

            // look for something like "Serial          : 999206122a03591c"

            if (strncmp(chp, "Serial", 6) != 0)

                continue;

            chp = strchr(chp, ':');

            if (!chp)

                continue;

             // skip colon and whitespace

            while ( *(++chp) == ' ') {}

            // truncate trailing whitespace

            end = chp;

            while (*end && *end != ' ' && *end != '\t' && *end != '\n' && *end != '\r')

                ++end;

            *end = 0; 

            whitespace = strchr(chp, ' ');

            if (whitespace)

                *whitespace = 0;

            whitespace = strchr(chp, '\t');

            if (whitespace)

                *whitespace = 0;

            whitespace = strchr(chp, '\r');

            if (whitespace)

                *whitespace = 0;

            whitespace = strchr(chp, '\n');

            if (whitespace)

                *whitespace = 0;

            // shift serial number to beginning of the buffer

            memmove(serial_number, chp, strlen(chp) + 1);

            break;

        }

        fclose(file);

    }

    return (serial_number[0] ? serial_number : NULL);

}