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//==========================================================================

//

//      ramfs3.c

//

//      Test fileio system, especially lseek calls.

//

//==========================================================================

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//

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// for more details.                                                        

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//

// As a special exception, if other files instantiate templates or use      

// macros or inline functions from this file, or you compile this file      

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//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):           nickg, asl, Paluch Sebastian

// Contributors:        nickg

// Date:                2006-10-05

// Purpose:             Test fileio system

// Description:         This test uses the testfs to check out the initialization

//                      and basic operation of the fileio system

//                      

//                      

//                      

//                      

//                      

//              

//

//####DESCRIPTIONEND####

//

//==========================================================================

#include <stdio.h>

#include <unistd.h>

#include <fcntl.h>

#include <errno.h>

#include <string.h>

#include <cyg/fileio/fileio.h>

#include <cyg/infra/testcase.h>

#include <cyg/infra/diag.h>            // HAL polled output

//==========================================================================

#define SHOW_RESULT( _fn, _res ) \

diag_printf("FAIL: " #_fn "() returned %ld %s\n", \

           (unsigned long)_res, _res<0?strerror(errno):"");

//==========================================================================

cyg_uint8 buf[256];

cyg_uint8 buf1[256];

//==========================================================================

// main

int main( int argc, char **argv )

{

    int err;

    FILE *stream;

    long pos;

    unsigned int i;

    char header[3];

    CYG_TEST_INIT();

    // --------------------------------------------------------------

    CYG_TEST_INFO("mount /");

    err = mount( "", "/", "ramfs" );

    if( err < 0 ) SHOW_RESULT( mount, err );

    CYG_TEST_INFO("creating /fseek");

    stream = fopen("/fseek","w+");

    if (!stream) {

      SHOW_RESULT( fopen, NULL);

      CYG_TEST_FAIL_FINISH("done");\

    }

    for (i = 0; i < sizeof(buf); i++) {

      buf[i] = i % 256;

    }

    CYG_TEST_INFO("writing test pattern");

    err=fwrite(buf,sizeof(buf), 1, stream);

    if ( err < 0 ) SHOW_RESULT( fwrite, err );

    pos = ftell(stream);

    if (pos < 0) SHOW_RESULT( ftell, pos );

    if (pos != sizeof(buf))

      diag_printf("<FAIL>: ftell is not telling the truth.");

    CYG_TEST_INFO("fseek()ing to 85");

    err = fseek(stream, 85, SEEK_SET);

    if ( err < 0 ) SHOW_RESULT( fseek, err );

    pos = ftell(stream);

    if (pos < 0) SHOW_RESULT( ftell, pos );

    if (pos != 85) CYG_TEST_FAIL("ftell is not telling the truth");

    err = fread(header,3,1,stream);

    if ( err < 0 ) SHOW_RESULT( fwrite, err );

    if ((header[0] != 85) ||

        (header[1] != 86) ||

        (header[2] != 87))

      CYG_TEST_FAIL("Read returned false data");

    pos = ftell(stream);

    if (pos < 0) SHOW_RESULT( ftell, pos );

    if (pos != 88)  CYG_TEST_FAIL("ftell is not telling the truth");

    for (i = 88; i < 161; i++) {

      buf[i] = 0x42;

    }

    CYG_TEST_INFO("writing");

    err = fwrite(buf+88, 73, 1, stream);

    if ( err < 0 ) SHOW_RESULT( fwrite, err );

    pos = ftell(stream);

    if (pos < 0) SHOW_RESULT( ftell, pos );

    if (pos != 161)  CYG_TEST_FAIL("ftell is not telling the truth");

    CYG_TEST_INFO("closing file");

    err = fclose(stream);

    if (err != 0) SHOW_RESULT( fclose, err );

    CYG_TEST_INFO("open file /fseek");

    stream = fopen("/fseek", "r+");

    if (!stream) {

      SHOW_RESULT( fopen, NULL);

      CYG_TEST_FAIL_FINISH("done");\

    }

    CYG_TEST_INFO("Seeking to beginning of file");

    err = fseek(stream, 0, SEEK_SET);

    if ( err < 0 ) SHOW_RESULT( fseek, err );

    CYG_TEST_INFO("Reading buf1");

    err = fread(buf1,sizeof(buf1),1, stream);

    if (err != 1) SHOW_RESULT( fread, err );

    CYG_TEST_INFO("Comparing contents");

    if (memcmp(buf, buf1, sizeof(buf1)))

      CYG_TEST_FAIL("File contents inconsistent");

    CYG_TEST_INFO("closing file");

    err = fclose(stream);

    if (err != 0) SHOW_RESULT( fclose, err );

    CYG_TEST_INFO("umount /");

    err = umount( "/" );

    if( err < 0 ) SHOW_RESULT( umount, err );

    CYG_TEST_PASS_FINISH("ramfs3");

}