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	Differential Revision: https://phabricator.services.mozilla.com/D48414 --HG-- extra : moz-landing-system : lando
		
			
				
	
	
		
			358 lines
		
	
	
	
		
			11 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			358 lines
		
	
	
	
		
			11 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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 * License, v. 2.0. If a copy of the MPL was not distributed with this
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 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "prio.h"
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#include "prmem.h"
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#include "prprf.h"
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#include "prinit.h"
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#include "prerror.h"
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#include "prthread.h"
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#include "plerror.h"
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#include "plgetopt.h"
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#define DEFAULT_COUNT 10
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#define DEFAULT_FILESIZE 1
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#define BUFFER_SIZE 1000000
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typedef enum {v_silent, v_whisper, v_shout} Verbosity;
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static void Verbose(Verbosity, const char*, const char*, PRIntn);
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#define VERBOSE(_l, _m) Verbose(_l, _m, __FILE__, __LINE__)
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static PRIntn test_result = 2;
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static PRFileDesc *output = NULL;
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static PRIntn verbose = v_silent;
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static PRIntn filesize = DEFAULT_FILESIZE;
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static PRIntn Usage(void)
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{
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    PR_fprintf(output, "Bigfile test usage:\n");
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    PR_fprintf(output, ">bigfile [-G] [-d] [-v[*v]] [-s <n>] <filename>\n");
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    PR_fprintf(output, "\td\tdebug mode (equivalent to -vvv)\t(false)\n");
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    PR_fprintf(output, "\tv\tAdditional levels of output\t(none)\n");
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    PR_fprintf(output, "\tk\tKeep data file after exit\t(false)\n");
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    PR_fprintf(output, "\ts <n>\tFile size in megabytes\t\t(1 megabyte)\n");
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    PR_fprintf(output, "\t<filename>\tName of test file\t(none)\n");
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    return 2;  /* nothing happened */
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}  /* Usage */
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static PRStatus DeleteIfFound(const char *filename)
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{
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    PRStatus rv;
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    VERBOSE(v_shout, "Checking for existing file");
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    rv = PR_Access(filename, PR_ACCESS_WRITE_OK);
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    if (PR_SUCCESS == rv)
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    {
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        VERBOSE(v_shout, "Deleting existing file");
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        rv = PR_Delete(filename);
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        if (PR_FAILURE == rv) {
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            VERBOSE(v_shout, "Cannot delete big file");
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        }
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    }
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    else if (PR_FILE_NOT_FOUND_ERROR !=  PR_GetError()) {
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        VERBOSE(v_shout, "Cannot access big file");
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    }
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    else {
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        rv = PR_SUCCESS;
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    }
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    return rv;
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}  /* DeleteIfFound */
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static PRIntn Error(const char *msg, const char *filename)
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{
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    PRInt32 error = PR_GetError();
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    if (NULL != msg)
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    {
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        if (0 == error) {
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            PR_fprintf(output, msg);
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        }
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        else {
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            PL_FPrintError(output, msg);
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        }
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    }
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    (void)DeleteIfFound(filename);
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    if (v_shout == verbose) {
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        PR_Abort();
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    }
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    return 1;
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}  /* Error */
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static void Verbose(
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    Verbosity level, const char *msg, const char *file, PRIntn line)
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{
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    if (level <= verbose) {
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        PR_fprintf(output, "[%s : %d]: %s\n", file, line, msg);
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    }
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}  /* Verbose */
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static void PrintInfo(PRFileInfo64 *info, const char *filename)
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{
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    PRExplodedTime tm;
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    char ctime[40], mtime[40];
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    static const char *types[] = {"FILE", "DIRECTORY", "OTHER"};
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    PR_fprintf(
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        output, "[%s : %d]: File info for %s\n",
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        __FILE__, __LINE__, filename);
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    PR_fprintf(
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        output, "    type: %s, size: %llu bytes,\n",
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        types[info->type - 1], info->size);
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    PR_ExplodeTime(info->creationTime, PR_GMTParameters, &tm);
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    (void)PR_FormatTime(ctime, sizeof(ctime), "%c GMT", &tm);
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    PR_ExplodeTime(info->modifyTime, PR_GMTParameters, &tm);
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    (void)PR_FormatTime(mtime, sizeof(mtime), "%c GMT", &tm);
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    PR_fprintf(
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        output, "    creation: %s,\n    modify: %s\n", ctime, mtime);
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}  /* PrintInfo */
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int main(int argc, char **argv)
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{
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    PRStatus rv;
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    char *buffer;
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    PLOptStatus os;
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    PRInt32 loop, bytes;
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    PRFileInfo small_info;
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    PRFileInfo64 big_info;
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    PRBool keep = PR_FALSE;
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    PRFileDesc *file = NULL;
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    const char *filename = NULL;
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    PRIntn count = DEFAULT_COUNT;
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    PRInt64 filesize64, big_answer, big_size, one_meg, zero_meg, big_fragment;
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    PRInt64 sevenFox = LL_INIT(0,0x7fffffff);
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    PLOptState *opt = PL_CreateOptState(argc, argv, "dtvhs:");
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    output = PR_GetSpecialFD(PR_StandardError);
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    PR_STDIO_INIT();
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    while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
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    {
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        if (PL_OPT_BAD == os) {
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            continue;
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        }
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        switch (opt->option)
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        {
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            case 0:
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                filename = opt->value;
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                break;
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            case 'd':  /* debug mode */
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                verbose = v_shout;
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                break;
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            case 'k':  /* keep file */
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                keep = PR_TRUE;
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                break;
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            case 'v':  /* verbosity */
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                if (v_shout > verbose) {
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                    verbose += 1;
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                }
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                break;
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            case 'c':  /* loop counter */
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                count = atoi(opt->value);
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                break;
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            case 's':  /* filesize */
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                filesize = atoi(opt->value);
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                break;
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            case 'h':  /* confused */
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            default:
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                return Usage();
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        }
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    }
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    PL_DestroyOptState(opt);
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    if (0 == count) {
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        count = DEFAULT_COUNT;
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    }
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    if (0 == filesize) {
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        filesize = DEFAULT_FILESIZE;
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    }
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    if (NULL == filename)
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    {
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#define FILE_NAME "bigfile.dat"
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        if (DEFAULT_FILESIZE != filesize) {
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            return Usage();
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        }
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        else {
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            filename = FILE_NAME;
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        }
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    }
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    if (PR_FAILURE == DeleteIfFound(filename)) {
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        return 1;
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    }
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    test_result = 0;
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    LL_I2L(zero_meg, 0);
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    LL_I2L(one_meg, 1000000);
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    LL_I2L(filesize64, filesize);
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    buffer = (char*)PR_MALLOC(BUFFER_SIZE);
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    LL_I2L(big_fragment, BUFFER_SIZE);
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    LL_MUL(filesize64, filesize64, one_meg);
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    for (loop = 0; loop < BUFFER_SIZE; ++loop) {
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        buffer[loop] = (char)loop;
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    }
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    VERBOSE(v_whisper, "Creating big file");
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    file = PR_Open(filename, PR_CREATE_FILE | PR_WRONLY, 0666);
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    if (NULL == file) {
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        return Error("PR_Open()", filename);
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    }
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    VERBOSE(v_whisper, "Testing available space in empty file");
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    big_answer = file->methods->available64(file);
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    if (!LL_IS_ZERO(big_answer)) {
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        return Error("empty available64()", filename);
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    }
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    LL_SUB(big_size, filesize64, one_meg);
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    VERBOSE(v_whisper, "Creating sparse big file by seeking to end");
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    big_answer = file->methods->seek64(file, big_size, PR_SEEK_SET);
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    if (!LL_EQ(big_answer, big_size)) {
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        return Error("seek", filename);
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    }
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    VERBOSE(v_whisper, "Writing block at end of sparse file");
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    bytes = file->methods->write(file, buffer, BUFFER_SIZE);
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    if (bytes != BUFFER_SIZE) {
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        return Error("write", filename);
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    }
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    VERBOSE(v_whisper, "Testing available space at end of sparse file");
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    big_answer = file->methods->available64(file);
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    if (!LL_IS_ZERO(big_answer)) {
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        return Error("eof available64()", filename);
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    }
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    VERBOSE(v_whisper, "Getting big info on sparse big file");
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    rv = file->methods->fileInfo64(file, &big_info);
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    if (PR_FAILURE == rv) {
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        return Error("fileInfo64()", filename);
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    }
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    if (v_shout <= verbose) {
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        PrintInfo(&big_info, filename);
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    }
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    VERBOSE(v_whisper, "Getting small info on sparse big file");
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    rv = file->methods->fileInfo(file, &small_info);
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    if (LL_CMP(sevenFox, <, filesize64) && (PR_SUCCESS == rv))
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    {
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        VERBOSE(v_whisper, "Should have failed and didn't");
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        return Error("fileInfo()", filename);
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    }
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    else if (LL_CMP(sevenFox, >, filesize64) && (PR_FAILURE == rv))
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    {
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        VERBOSE(v_whisper, "Should have succeeded and didn't");
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        return Error("fileInfo()", filename);
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    }
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    VERBOSE(v_whisper, "Rewinding big file");
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    big_answer = file->methods->seek64(file, zero_meg, PR_SEEK_SET);
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    if (!LL_IS_ZERO(big_answer)) {
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        return Error("rewind seek64()", filename);
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    }
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    VERBOSE(v_whisper, "Establishing available space in rewound file");
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    big_answer = file->methods->available64(file);
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    if (LL_NE(filesize64, big_answer)) {
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        return Error("bof available64()", filename);
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    }
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    VERBOSE(v_whisper, "Closing big file");
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    rv = file->methods->close(file);
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    if (PR_FAILURE == rv) {
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        return Error("close()", filename);
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    }
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    VERBOSE(v_whisper, "Reopening big file");
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    file = PR_Open(filename, PR_RDWR, 0666);
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    if (NULL == file) {
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        return Error("open failed", filename);
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    }
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    VERBOSE(v_whisper, "Checking available data in reopened file");
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    big_answer = file->methods->available64(file);
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    if (LL_NE(filesize64, big_answer)) {
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        return Error("reopened available64()", filename);
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    }
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    big_answer = zero_meg;
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    VERBOSE(v_whisper, "Rewriting every byte of big file data");
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    do
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    {
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        bytes = file->methods->write(file, buffer, BUFFER_SIZE);
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        if (bytes != BUFFER_SIZE) {
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            return Error("write", filename);
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        }
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        LL_ADD(big_answer, big_answer, big_fragment);
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    } while (LL_CMP(big_answer, <, filesize64));
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    VERBOSE(v_whisper, "Checking position at eof");
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    big_answer = file->methods->seek64(file, zero_meg, PR_SEEK_CUR);
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    if (LL_NE(big_answer, filesize64)) {
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        return Error("file size error", filename);
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    }
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    VERBOSE(v_whisper, "Testing available space at eof");
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    big_answer = file->methods->available64(file);
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    if (!LL_IS_ZERO(big_answer)) {
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        return Error("eof available64()", filename);
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    }
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    VERBOSE(v_whisper, "Rewinding full file");
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    big_answer = file->methods->seek64(file, zero_meg, PR_SEEK_SET);
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    if (!LL_IS_ZERO(big_answer)) {
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        return Error("bof seek64()", filename);
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    }
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    VERBOSE(v_whisper, "Testing available space in rewound file");
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    big_answer = file->methods->available64(file);
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    if (LL_NE(big_answer, filesize64)) {
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        return Error("bof available64()", filename);
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    }
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    VERBOSE(v_whisper, "Seeking to end of big file");
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    big_answer = file->methods->seek64(file, filesize64, PR_SEEK_SET);
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    if (LL_NE(big_answer, filesize64)) {
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        return Error("eof seek64()", filename);
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    }
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    VERBOSE(v_whisper, "Getting info on big file while it's open");
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    rv = file->methods->fileInfo64(file, &big_info);
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    if (PR_FAILURE == rv) {
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        return Error("fileInfo64()", filename);
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    }
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    if (v_shout <= verbose) {
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        PrintInfo(&big_info, filename);
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    }
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    VERBOSE(v_whisper, "Closing big file");
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    rv = file->methods->close(file);
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    if (PR_FAILURE == rv) {
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        return Error("close()", filename);
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    }
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    VERBOSE(v_whisper, "Getting info on big file after it's closed");
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    rv = PR_GetFileInfo64(filename, &big_info);
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    if (PR_FAILURE == rv) {
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        return Error("fileInfo64()", filename);
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    }
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    if (v_shout <= verbose) {
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        PrintInfo(&big_info, filename);
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    }
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    VERBOSE(v_whisper, "Deleting big file");
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    rv = PR_Delete(filename);
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    if (PR_FAILURE == rv) {
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        return Error("PR_Delete()", filename);
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    }
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    PR_DELETE(buffer);
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    return test_result;
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} /* main */
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/* bigfile.c */
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