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

//

//      ramfs1.c

//

//      Test fileio system

//

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

// ####ECOSGPLCOPYRIGHTBEGIN####                                            

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

// This file is part of eCos, the Embedded Configurable Operating System.   

// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004 Free Software Foundation, Inc.

//

// eCos is free software; you can redistribute it and/or modify it under    

// the terms of the GNU General Public License as published by the Free     

// Software Foundation; either version 2 or (at your option) any later      

// version.                                                                 

//

// eCos is distributed in the hope that it will be useful, but WITHOUT      

// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    

// for more details.                                                        

//

// You should have received a copy of the GNU General Public License        

// along with eCos; if not, write to the Free Software Foundation, Inc.,    

// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            

//

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

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

// and link it with other works to produce a work based on this file,       

// this file does not by itself cause the resulting work to be covered by   

// the GNU General Public License. However the source code for this file    

// must still be made available in accordance with section (3) of the GNU   

// General Public License v2.                                               

//

// This exception does not invalidate any other reasons why a work based    

// on this file might be covered by the GNU General Public License.         

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

// ####ECOSGPLCOPYRIGHTEND####                                              

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

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

//

// Author(s):           nickg

// Contributors:        nickg

// Date:                2000-05-25

// Purpose:             Test fileio system

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

//                      and basic operation of the fileio system

//                      

//                      

//                      

//                      

//                      

//              

//

//####DESCRIPTIONEND####

//

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

#include <pkgconf/hal.h>

#include <pkgconf/kernel.h>

#include <pkgconf/io_fileio.h>

#include <pkgconf/fs_ram.h>

#include <cyg/kernel/ktypes.h>         // base kernel types

#include <cyg/infra/cyg_trac.h>        // tracing macros

#include <cyg/infra/cyg_ass.h>         // assertion macros

#include <unistd.h>

#include <fcntl.h>

#include <sys/stat.h>

#include <errno.h>

#include <string.h>

#include <dirent.h>

#include <stdio.h>

#include <cyg/fileio/fileio.h>

#include <cyg/infra/testcase.h>

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

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

#if 0

MTAB_ENTRY( ramfs_mte1,

                   "/",

                   "ramfs",

                   "",

                   0);

#endif

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

#define SHOW_RESULT( _fn, _res ) \

diag_printf("<FAIL>: " #_fn "() returned %ld %s\n", (long)_res, _res<0?strerror(errno):"");

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

#define IOSIZE  100

#define LONGNAME1       "long_file_name_that_should_take_up_more_than_one_directory_entry_1"

#define LONGNAME2       "long_file_name_that_should_take_up_more_than_one_directory_entry_2"

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

#ifndef CYGPKG_LIBC_STRING

char *strcat( char *s1, const char *s2 )

{

    char *s = s1;

    while( *s1 ) s1++;

    while( (*s1++ = *s2++) != 0);

    return s;

}

#endif

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

static void listdir( char *name, int statp, int numexpected, int *numgot )

{

    int err;

    DIR *dirp;

    int num=0;

    diag_printf("<INFO>: reading directory %s\n",name);

    dirp = opendir( name );

    if( dirp == NULL ) SHOW_RESULT( opendir, -1 );

    for(;;)

    {

        struct dirent *entry = readdir( dirp );

        if( entry == NULL )

            break;

        num++;

        diag_printf("<INFO>: entry %14s",entry->d_name);

#ifdef CYGPKG_FS_RAM_RET_DIRENT_DTYPE

        diag_printf(" d_type %2x", entry->d_type);

#endif

        if( statp )

        {

            char fullname[PATH_MAX];

            struct stat sbuf;

            if( name[0] )

            {

                strcpy(fullname, name );

                if( !(name[0] == '/' && name[1] == 0 ) )

                    strcat(fullname, "/" );

            }

            else fullname[0] = 0;

            strcat(fullname, entry->d_name );

            err = stat( fullname, &sbuf );

            if( err < 0 )

            {

                if( errno == ENOSYS )

                    diag_printf(" <no status available>");

                else SHOW_RESULT( stat, err );

            }

            else

            {

                diag_printf(" [mode %08x ino %08x nlink %d size %ld]",

                            sbuf.st_mode,sbuf.st_ino,sbuf.st_nlink,

                            (unsigned long) sbuf.st_size);

            }

#ifdef CYGPKG_FS_RAM_RET_DIRENT_DTYPE

            if ((entry->d_type & S_IFMT) != (sbuf.st_mode & S_IFMT))

              CYG_TEST_FAIL("File mode's don't match between dirent and stat");

#endif

        }

        diag_printf("\n");

    }

    err = closedir( dirp );

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

    if (numexpected >= 0 && num != numexpected)

        CYG_TEST_FAIL("Wrong number of dir entries\n");

    if ( numgot != NULL )

        *numgot = num;

}

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

static void createfile( char *name, size_t size )

{

    char buf[IOSIZE];

    int fd;

    ssize_t wrote;

    int i;

    int err;

    diag_printf("<INFO>: create file %s size %zd\n",name,size);

    err = access( name, F_OK );

    if( err < 0 && errno != EACCES ) SHOW_RESULT( access, err );

    for( i = 0; i < IOSIZE; i++ ) buf[i] = i%256;

    fd = open( name, O_WRONLY|O_CREAT );

    if( fd < 0 ) SHOW_RESULT( open, fd );

    while( size > 0 )

    {

        ssize_t len = size;

        if ( len > IOSIZE ) len = IOSIZE;

        wrote = write( fd, buf, len );

        if( wrote != len ) SHOW_RESULT( write, wrote );

        size -= wrote;

    }

    err = close( fd );

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

}

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

#if 0

static void maxfile( char *name )

{

    char buf[IOSIZE];

    int fd;

    ssize_t wrote;

    int i;

    int err;

    size_t size = 0;

    diag_printf("<INFO>: create maximal file %s\n",name);

    err = access( name, F_OK );

    if( err < 0 && errno != EACCES ) SHOW_RESULT( access, err );

    for( i = 0; i < IOSIZE; i++ ) buf[i] = i%256;

    fd = open( name, O_WRONLY|O_CREAT );

    if( fd < 0 ) SHOW_RESULT( open, fd );

    do

    {

        wrote = write( fd, buf, IOSIZE );

        if( wrote < 0 ) SHOW_RESULT( write, wrote );

        size += wrote;

    } while( wrote == IOSIZE );

    diag_printf("<INFO>: file size == %d\n",size);

    err = close( fd );

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

}

#endif

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

static void checkfile( char *name )

{

    char buf[IOSIZE];

    int fd;

    ssize_t done;

    int i;

    int err;

    off_t pos = 0;

    diag_printf("<INFO>: check file %s\n",name);

    err = access( name, F_OK );

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

    fd = open( name, O_RDONLY );

    if( fd < 0 ) SHOW_RESULT( open, fd );

    for(;;)

    {

        done = read( fd, buf, IOSIZE );

        if( done < 0 ) SHOW_RESULT( read, done );

        if( done == 0 ) break;

        for( i = 0; i < done; i++ )

            if( buf[i] != i%256 )

            {

                diag_printf("buf[%ld+%d](%02x) != %02x\n",

                            (unsigned long)pos,i,buf[i],i%256);

                CYG_TEST_FAIL("Data read not equal to data written\n");

            }

        pos += done;

    }

    err = close( fd );

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

}

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

static void copyfile( char *name2, char *name1 )

{

    int err;

    char buf[IOSIZE];

    int fd1, fd2;

    ssize_t done, wrote;

    diag_printf("<INFO>: copy file %s -> %s\n",name2,name1);

    err = access( name1, F_OK );

    if( err < 0 && errno != EACCES ) SHOW_RESULT( access, err );

    err = access( name2, F_OK );

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

    fd1 = open( name1, O_WRONLY|O_CREAT );

    if( fd1 < 0 ) SHOW_RESULT( open, fd1 );

    fd2 = open( name2, O_RDONLY );

    if( fd2 < 0 ) SHOW_RESULT( open, fd2 );

    for(;;)

    {

        done = read( fd2, buf, IOSIZE );

        if( done < 0 ) SHOW_RESULT( read, done );

        if( done == 0 ) break;

        wrote = write( fd1, buf, done );

        if( wrote != done ) SHOW_RESULT( write, wrote );

        if( wrote != done ) break;

    }

    err = close( fd1 );

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

    err = close( fd2 );

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

}

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

static void comparefiles( char *name2, char *name1 )

{

    int err;

    char buf1[IOSIZE];

    char buf2[IOSIZE];

    int fd1, fd2;

    ssize_t done1, done2;

    int i;

    diag_printf("<INFO>: compare files %s == %s\n",name2,name1);

    err = access( name1, F_OK );

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

    err = access( name1, F_OK );

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

    fd1 = open( name1, O_RDONLY );

    if( fd1 < 0 ) SHOW_RESULT( open, fd1 );

    fd2 = open( name2, O_RDONLY );

    if( fd2 < 0 ) SHOW_RESULT( open, fd2 );

    for(;;)

    {

        done1 = read( fd1, buf1, IOSIZE );

        if( done1 < 0 ) SHOW_RESULT( read, done1 );

        done2 = read( fd2, buf2, IOSIZE );

        if( done2 < 0 ) SHOW_RESULT( read, done2 );

        if( done1 != done2 )

            diag_printf("Files different sizes\n");

        if( done1 == 0 ) break;

        for( i = 0; i < done1; i++ )

            if( buf1[i] != buf2[i] )

            {

                diag_printf("buf1[%d](%02x) != buf1[%d](%02x)\n",i,buf1[i],i,buf2[i]);

                CYG_TEST_FAIL("Data in files not equal\n");

            }

    }

    err = close( fd1 );

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

    err = close( fd2 );

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

}

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

void checkcwd( const char *cwd )

{

    static char cwdbuf[PATH_MAX];

    char *ret;

    ret = getcwd( cwdbuf, sizeof(cwdbuf));

    if( ret == NULL ) SHOW_RESULT( getcwd, ret );

    if( strcmp( cwdbuf, cwd ) != 0 )

    {

        diag_printf( "cwdbuf %s cwd %s\n",cwdbuf, cwd );

        CYG_TEST_FAIL( "Current directory mismatch");

    }

}

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

// main

int main( int argc, char **argv )

{

    int err;

    int existingdirents=-1;

#if defined(CYGSEM_FILEIO_BLOCK_USAGE) && defined(CYGPKG_FS_RAM_BLOCKS_ARRAY)

    struct cyg_fs_block_usage usage;

#endif

    CYG_TEST_INIT();

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

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

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

    err = chdir( "/" );

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

    checkcwd( "/" );

    listdir( "/", true, -1, &existingdirents );

    if ( existingdirents < 2 )

        CYG_TEST_FAIL("Not enough dir entries\n");

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

#if defined(CYGSEM_FILEIO_BLOCK_USAGE) && defined(CYGPKG_FS_RAM_BLOCKS_ARRAY)

    err = cyg_fs_getinfo("/", FS_INFO_BLOCK_USAGE, &usage, sizeof(usage));

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

    diag_printf("<INFO>: total size: %6lld blocks, %10lld bytes\n",

                usage.total_blocks, usage.total_blocks * usage.block_size);

    diag_printf("<INFO>: free size:  %6lld blocks, %10lld bytes\n",

                usage.free_blocks, usage.free_blocks * usage.block_size);

    diag_printf("<INFO>: block size: %6u bytes\n", usage.block_size);

#endif

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

    createfile( "/foo", 202 );

    checkfile( "foo" );

    copyfile( "foo", "fee");

    checkfile( "fee" );

    comparefiles( "foo", "/fee" );

    diag_printf("<INFO>: mkdir bar\n");

    err = mkdir( "/bar", 0 );

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

    listdir( "/" , true, existingdirents+3, NULL );

    copyfile( "fee", "/bar/fum" );

    checkfile( "bar/fum" );

    comparefiles( "/fee", "bar/fum" );

    diag_printf("<INFO>: cd bar\n");

    err = chdir( "bar" );

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

    checkcwd( "/bar" );

    diag_printf("<INFO>: rename /foo bundy\n");

    err = rename( "/foo", "bundy" );

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

    listdir( "/", true, existingdirents+2, NULL );

    listdir( "" , true, 4, NULL );

    checkfile( "/bar/bundy" );

    comparefiles("/fee", "bundy" );

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

    createfile( LONGNAME1, 123 );

    checkfile( LONGNAME1 );

    copyfile( LONGNAME1, LONGNAME2 );

    listdir( "", false, 6, NULL );

    diag_printf("<INFO>: unlink " LONGNAME1 "\n");

    err = unlink( LONGNAME1 );

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

    diag_printf("<INFO>: unlink " LONGNAME2 "\n");

    err = unlink( LONGNAME2 );

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

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

    diag_printf("<INFO>: unlink fee\n");

    err = unlink( "/fee" );

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

    diag_printf("<INFO>: unlink fum\n");

    err = unlink( "fum" );

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

    diag_printf("<INFO>: unlink /bar/bundy\n");

    err = unlink( "/bar/bundy" );

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

    diag_printf("<INFO>: cd /\n");

    err = chdir( "/" );

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

    checkcwd( "/" );

    diag_printf("<INFO>: rmdir /bar\n");

    err = rmdir( "/bar" );

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

    listdir( "/", false, existingdirents, NULL );

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

    diag_printf("<INFO>: mount /ram \n");

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

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

    createfile( "/ram/tinky", 456 );

    copyfile( "/ram/tinky", "/ram/laalaa" );

    checkfile( "/ram/tinky");

    checkfile( "/ram/laalaa");

    comparefiles( "/ram/tinky", "/ram/laalaa" );

    diag_printf("<INFO>: cd /ram\n");

    err = chdir( "/ram" );

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

    checkcwd( "/ram" );

    diag_printf("<INFO>: mkdir noonoo\n");

    err = mkdir( "noonoo", 0 );

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

    listdir( "." , true, existingdirents+3, NULL);

    diag_printf("<INFO>: cd noonoo\n");

    err = chdir( "noonoo" );

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

    checkcwd( "/ram/noonoo" );

    createfile( "tinky", 678 );

    checkfile( "tinky" );

    createfile( "dipsy", 3456 );

    checkfile( "dipsy" );

    copyfile( "dipsy", "po" );

    checkfile( "po" );

    comparefiles( "dipsy", "po" );

    listdir( ".", true, 5, NULL );

    listdir( "", true, 5, NULL );

    listdir( "..", true, existingdirents+3, NULL );

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

#if defined(CYGSEM_FILEIO_BLOCK_USAGE) && defined(CYGPKG_FS_RAM_BLOCKS_ARRAY)

    err = cyg_fs_getinfo("/", FS_INFO_BLOCK_USAGE, &usage, sizeof(usage));

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

    diag_printf("<INFO>: total size: %6lld blocks, %10lld bytes\n",

                usage.total_blocks, usage.total_blocks * usage.block_size);

    diag_printf("<INFO>: free size:  %6lld blocks, %10lld bytes\n",

                usage.free_blocks, usage.free_blocks * usage.block_size);

    diag_printf("<INFO>: block size: %6u bytes\n", usage.block_size);

#endif

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

    diag_printf("<INFO>: unlink tinky\n");

    err = unlink( "tinky" );

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

    diag_printf("<INFO>: unlink dipsy\n");

    err = unlink( "dipsy" );

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

    diag_printf("<INFO>: unlink po\n");

    err = unlink( "po" );

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

    diag_printf("<INFO>: cd ..\n");

    err = chdir( ".." );

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

    checkcwd( "/ram" );

    diag_printf("<INFO>: rmdir noonoo\n");

    err = rmdir( "noonoo" );

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

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

    err = mkdir( "x", 0 );

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

    err = mkdir( "x/y", 0 );

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

    err = mkdir( "x/y/z", 0 );

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

    err = mkdir( "x/y/z/w", 0 );

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

    diag_printf("<INFO>: cd /ram/x/y/z/w\n");

    err = chdir( "/ram/x/y/z/w" );

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

    checkcwd( "/ram/x/y/z/w" );

    diag_printf("<INFO>: cd ..\n");

    err = chdir( ".." );

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

    checkcwd( "/ram/x/y/z" );

    diag_printf("<INFO>: cd .\n");

    err = chdir( "." );

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

    checkcwd( "/ram/x/y/z" );

    diag_printf("<INFO>: cd ../../y\n");

    err = chdir( "../../y" );

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