MFC r304075,r304989:

[FreeBSD/stable/10.git] / contrib / libarchive / libarchive / test / main.c

/*
 * Copyright (c) 2003-2009 Tim Kientzle
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "test.h"
#include "test_utils.h"
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <errno.h>
#ifdef HAVE_ICONV_H
#include <iconv.h>
#endif
/*
 * Some Linux distributions have both linux/ext2_fs.h and ext2fs/ext2_fs.h.
 * As the include guards don't agree, the order of include is important.
 */
#ifdef HAVE_LINUX_EXT2_FS_H
#include <linux/ext2_fs.h>      /* for Linux file flags */
#endif
#if defined(HAVE_EXT2FS_EXT2_FS_H) && !defined(__CYGWIN__)
#include <ext2fs/ext2_fs.h>     /* Linux file flags, broken on Cygwin */
#endif
#include <limits.h>
#include <locale.h>
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#include <stdarg.h>
#include <time.h>

/*
 * This same file is used pretty much verbatim for all test harnesses.
 *
 * The next few lines are the only differences.
 * TODO: Move this into a separate configuration header, have all test
 * suites share one copy of this file.
 */
__FBSDID("$FreeBSD$");
#define KNOWNREF        "test_compat_gtar_1.tar.uu"
#define ENVBASE "LIBARCHIVE" /* Prefix for environment variables. */
#undef  PROGRAM              /* Testing a library, not a program. */
#define LIBRARY "libarchive"
#define EXTRA_DUMP(x)   archive_error_string((struct archive *)(x))
#define EXTRA_ERRNO(x)  archive_errno((struct archive *)(x))
#define EXTRA_VERSION   archive_version_details()

/*
 *
 * Windows support routines
 *
 * Note: Configuration is a tricky issue.  Using HAVE_* feature macros
 * in the test harness is dangerous because they cover up
 * configuration errors.  The classic example of this is omitting a
 * configure check.  If libarchive and libarchive_test both look for
 * the same feature macro, such errors are hard to detect.  Platform
 * macros (e.g., _WIN32 or __GNUC__) are a little better, but can
 * easily lead to very messy code.  It's best to limit yourself
 * to only the most generic programming techniques in the test harness
 * and thus avoid conditionals altogether.  Where that's not possible,
 * try to minimize conditionals by grouping platform-specific tests in
 * one place (e.g., test_acl_freebsd) or by adding new assert()
 * functions (e.g., assertMakeHardlink()) to cover up platform
 * differences.  Platform-specific coding in libarchive_test is often
 * a symptom that some capability is missing from libarchive itself.
 */
#if defined(_WIN32) && !defined(__CYGWIN__)
#include <io.h>
#include <direct.h>
#include <windows.h>
#ifndef F_OK
#define F_OK (0)
#endif
#ifndef S_ISDIR
#define S_ISDIR(m)  ((m) & _S_IFDIR)
#endif
#ifndef S_ISREG
#define S_ISREG(m)  ((m) & _S_IFREG)
#endif
#if !defined(__BORLANDC__)
#define access _access
#undef chdir
#define chdir _chdir
#endif
#ifndef fileno
#define fileno _fileno
#endif
/*#define fstat _fstat64*/
#if !defined(__BORLANDC__)
#define getcwd _getcwd
#endif
#define lstat stat
/*#define lstat _stat64*/
/*#define stat _stat64*/
#define rmdir _rmdir
#if !defined(__BORLANDC__)
#define strdup _strdup
#define umask _umask
#endif
#define int64_t __int64
#endif

#if defined(HAVE__CrtSetReportMode)
# include <crtdbg.h>
#endif

/* Path to working directory for current test */
const char *testworkdir;
#ifdef PROGRAM
/* Pathname of exe to be tested. */
const char *testprogfile;
/* Name of exe to use in printf-formatted command strings. */
/* On Windows, this includes leading/trailing quotes. */
const char *testprog;
#endif

#if defined(_WIN32) && !defined(__CYGWIN__)
static void     *GetFunctionKernel32(const char *);
static int       my_CreateSymbolicLinkA(const char *, const char *, int);
static int       my_CreateHardLinkA(const char *, const char *);
static int       my_GetFileInformationByName(const char *,
                     BY_HANDLE_FILE_INFORMATION *);

static void *
GetFunctionKernel32(const char *name)
{
        static HINSTANCE lib;
        static int set;
        if (!set) {
                set = 1;
                lib = LoadLibrary("kernel32.dll");
        }
        if (lib == NULL) {
                fprintf(stderr, "Can't load kernel32.dll?!\n");
                exit(1);
        }
        return (void *)GetProcAddress(lib, name);
}

static int
my_CreateSymbolicLinkA(const char *linkname, const char *target, int flags)
{
        static BOOLEAN (WINAPI *f)(LPCSTR, LPCSTR, DWORD);
        static int set;
        if (!set) {
                set = 1;
                f = GetFunctionKernel32("CreateSymbolicLinkA");
        }
        return f == NULL ? 0 : (*f)(linkname, target, flags);
}

static int
my_CreateHardLinkA(const char *linkname, const char *target)
{
        static BOOLEAN (WINAPI *f)(LPCSTR, LPCSTR, LPSECURITY_ATTRIBUTES);
        static int set;
        if (!set) {
                set = 1;
                f = GetFunctionKernel32("CreateHardLinkA");
        }
        return f == NULL ? 0 : (*f)(linkname, target, NULL);
}

static int
my_GetFileInformationByName(const char *path, BY_HANDLE_FILE_INFORMATION *bhfi)
{
        HANDLE h;
        int r;

        memset(bhfi, 0, sizeof(*bhfi));
        h = CreateFile(path, FILE_READ_ATTRIBUTES, 0, NULL,
                OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
        if (h == INVALID_HANDLE_VALUE)
                return (0);
        r = GetFileInformationByHandle(h, bhfi);
        CloseHandle(h);
        return (r);
}
#endif

#if defined(HAVE__CrtSetReportMode) && !defined(__WATCOMC__)
static void
invalid_parameter_handler(const wchar_t * expression,
    const wchar_t * function, const wchar_t * file,
    unsigned int line, uintptr_t pReserved)
{
        /* nop */
}
#endif

/*
 *
 * OPTIONS FLAGS
 *
 */

/* Enable core dump on failure. */
static int dump_on_failure = 0;
/* Default is to remove temp dirs and log data for successful tests. */
static int keep_temp_files = 0;
/* Default is to run the specified tests once and report errors. */
static int until_failure = 0;
/* Default is to just report pass/fail for each test. */
static int verbosity = 0;
#define VERBOSITY_SUMMARY_ONLY -1 /* -q */
#define VERBOSITY_PASSFAIL 0   /* Default */
#define VERBOSITY_LIGHT_REPORT 1 /* -v */
#define VERBOSITY_FULL 2 /* -vv */
/* A few places generate even more output for verbosity > VERBOSITY_FULL,
 * mostly for debugging the test harness itself. */
/* Cumulative count of assertion failures. */
static int failures = 0;
/* Cumulative count of reported skips. */
static int skips = 0;
/* Cumulative count of assertions checked. */
static int assertions = 0;

/* Directory where uuencoded reference files can be found. */
static const char *refdir;

/*
 * Report log information selectively to console and/or disk log.
 */
static int log_console = 0;
static FILE *logfile;
static void
vlogprintf(const char *fmt, va_list ap)
{
#ifdef va_copy
        va_list lfap;
        va_copy(lfap, ap);
#endif
        if (log_console)
                vfprintf(stdout, fmt, ap);
        if (logfile != NULL)
#ifdef va_copy
                vfprintf(logfile, fmt, lfap);
        va_end(lfap);
#else
                vfprintf(logfile, fmt, ap);
#endif
}

static void
logprintf(const char *fmt, ...)
{
        va_list ap;
        va_start(ap, fmt);
        vlogprintf(fmt, ap);
        va_end(ap);
}

/* Set up a message to display only if next assertion fails. */
static char msgbuff[4096];
static const char *msg, *nextmsg;
void
failure(const char *fmt, ...)
{
        va_list ap;
        if (fmt == NULL) {
                nextmsg = NULL;
        } else {
                va_start(ap, fmt);
                vsprintf(msgbuff, fmt, ap);
                va_end(ap);
                nextmsg = msgbuff;
        }
}

/*
 * Copy arguments into file-local variables.
 * This was added to permit vararg assert() functions without needing
 * variadic wrapper macros.  Turns out that the vararg capability is almost
 * never used, so almost all of the vararg assertions can be simplified
 * by removing the vararg capability and reworking the wrapper macro to
 * pass __FILE__, __LINE__ directly into the function instead of using
 * this hook.  I suspect this machinery is used so rarely that we
 * would be better off just removing it entirely.  That would simplify
 * the code here noticeably.
 */
static const char *skipping_filename;
static int skipping_line;
void skipping_setup(const char *filename, int line)
{
        skipping_filename = filename;
        skipping_line = line;
}

/* Called at the beginning of each assert() function. */
static void
assertion_count(const char *file, int line)
{
        (void)file; /* UNUSED */
        (void)line; /* UNUSED */
        ++assertions;
        /* Proper handling of "failure()" message. */
        msg = nextmsg;
        nextmsg = NULL;
        /* Uncomment to print file:line after every assertion.
         * Verbose, but occasionally useful in tracking down crashes. */
        /* printf("Checked %s:%d\n", file, line); */
}

/*
 * For each test source file, we remember how many times each
 * assertion was reported.  Cleared before each new test,
 * used by test_summarize().
 */
static struct line {
        int count;
        int skip;
}  failed_lines[10000];
const char *failed_filename;

/* Count this failure, setup up log destination and handle initial report. */
static void
failure_start(const char *filename, int line, const char *fmt, ...)
{
        va_list ap;

        /* Record another failure for this line. */
        ++failures;
        failed_filename = filename;
        failed_lines[line].count++;

        /* Determine whether to log header to console. */
        switch (verbosity) {
        case VERBOSITY_LIGHT_REPORT:
                log_console = (failed_lines[line].count < 2);
                break;
        default:
                log_console = (verbosity >= VERBOSITY_FULL);
        }

        /* Log file:line header for this failure */
        va_start(ap, fmt);
#if _MSC_VER
        logprintf("%s(%d): ", filename, line);
#else
        logprintf("%s:%d: ", filename, line);
#endif
        vlogprintf(fmt, ap);
        va_end(ap);
        logprintf("\n");

        if (msg != NULL && msg[0] != '\0') {
                logprintf("   Description: %s\n", msg);
                msg = NULL;
        }

        /* Determine whether to log details to console. */
        if (verbosity == VERBOSITY_LIGHT_REPORT)
                log_console = 0;
}

/* Complete reporting of failed tests. */
/*
 * The 'extra' hook here is used by libarchive to include libarchive
 * error messages with assertion failures.  It could also be used
 * to add strerror() output, for example.  Just define the EXTRA_DUMP()
 * macro appropriately.
 */
static void
failure_finish(void *extra)
{
        (void)extra; /* UNUSED (maybe) */
#ifdef EXTRA_DUMP
        if (extra != NULL) {
                logprintf("    errno: %d\n", EXTRA_ERRNO(extra));
                logprintf("   detail: %s\n", EXTRA_DUMP(extra));
        }
#endif

        if (dump_on_failure) {
                fprintf(stderr,
                    " *** forcing core dump so failure can be debugged ***\n");
                abort();
        }
}

/* Inform user that we're skipping some checks. */
void
test_skipping(const char *fmt, ...)
{
        char buff[1024];
        va_list ap;

        va_start(ap, fmt);
        vsprintf(buff, fmt, ap);
        va_end(ap);
        /* Use failure() message if set. */
        msg = nextmsg;
        nextmsg = NULL;
        /* failure_start() isn't quite right, but is awfully convenient. */
        failure_start(skipping_filename, skipping_line, "SKIPPING: %s", buff);
        --failures; /* Undo failures++ in failure_start() */
        /* Don't failure_finish() here. */
        /* Mark as skip, so doesn't count as failed test. */
        failed_lines[skipping_line].skip = 1;
        ++skips;
}

/*
 *
 * ASSERTIONS
 *
 */

/* Generic assert() just displays the failed condition. */
int
assertion_assert(const char *file, int line, int value,
    const char *condition, void *extra)
{
        assertion_count(file, line);
        if (!value) {
                failure_start(file, line, "Assertion failed: %s", condition);
                failure_finish(extra);
        }
        return (value);
}

/* chdir() and report any errors */
int
assertion_chdir(const char *file, int line, const char *pathname)
{
        assertion_count(file, line);
        if (chdir(pathname) == 0)
                return (1);
        failure_start(file, line, "chdir(\"%s\")", pathname);
        failure_finish(NULL);
        return (0);

}

/* Verify two integers are equal. */
int
assertion_equal_int(const char *file, int line,
    long long v1, const char *e1, long long v2, const char *e2, void *extra)
{
        assertion_count(file, line);
        if (v1 == v2)
                return (1);
        failure_start(file, line, "%s != %s", e1, e2);
        logprintf("      %s=%lld (0x%llx, 0%llo)\n", e1, v1, v1, v1);
        logprintf("      %s=%lld (0x%llx, 0%llo)\n", e2, v2, v2, v2);
        failure_finish(extra);
        return (0);
}

/*
 * Utility to convert a single UTF-8 sequence.
 */
static int
_utf8_to_unicode(uint32_t *pwc, const char *s, size_t n)
{
        static const char utf8_count[256] = {
                 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 00 - 0F */
                 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 10 - 1F */
                 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 20 - 2F */
                 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 30 - 3F */
                 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 40 - 4F */
                 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 50 - 5F */
                 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 60 - 6F */
                 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 70 - 7F */
                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,/* 80 - 8F */
                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,/* 90 - 9F */
                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,/* A0 - AF */
                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,/* B0 - BF */
                 0, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,/* C0 - CF */
                 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,/* D0 - DF */
                 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,/* E0 - EF */
                 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* F0 - FF */
        };
        int ch;
        int cnt;
        uint32_t wc;

        *pwc = 0;

        /* Sanity check. */
        if (n == 0)
                return (0);
        /*
         * Decode 1-4 bytes depending on the value of the first byte.
         */
        ch = (unsigned char)*s;
        if (ch == 0)
                return (0); /* Standard:  return 0 for end-of-string. */
        cnt = utf8_count[ch];

        /* Invalide sequence or there are not plenty bytes. */
        if (n < (size_t)cnt)
                return (-1);

        /* Make a Unicode code point from a single UTF-8 sequence. */
        switch (cnt) {
        case 1: /* 1 byte sequence. */
                *pwc = ch & 0x7f;
                return (cnt);
        case 2: /* 2 bytes sequence. */
                if ((s[1] & 0xc0) != 0x80) return (-1);
                *pwc = ((ch & 0x1f) << 6) | (s[1] & 0x3f);
                return (cnt);
        case 3: /* 3 bytes sequence. */
                if ((s[1] & 0xc0) != 0x80) return (-1);
                if ((s[2] & 0xc0) != 0x80) return (-1);
                wc = ((ch & 0x0f) << 12)
                    | ((s[1] & 0x3f) << 6)
                    | (s[2] & 0x3f);
                if (wc < 0x800)
                        return (-1);/* Overlong sequence. */
                break;
        case 4: /* 4 bytes sequence. */
                if (n < 4)
                        return (-1);
                if ((s[1] & 0xc0) != 0x80) return (-1);
                if ((s[2] & 0xc0) != 0x80) return (-1);
                if ((s[3] & 0xc0) != 0x80) return (-1);
                wc = ((ch & 0x07) << 18)
                    | ((s[1] & 0x3f) << 12)
                    | ((s[2] & 0x3f) << 6)
                    | (s[3] & 0x3f);
                if (wc < 0x10000)
                        return (-1);/* Overlong sequence. */
                break;
        default:
                return (-1);
        }

        /* The code point larger than 0x10FFFF is not leagal
         * Unicode values. */
        if (wc > 0x10FFFF)
                return (-1);
        /* Correctly gets a Unicode, returns used bytes. */
        *pwc = wc;
        return (cnt);
}

static void strdump(const char *e, const char *p, int ewidth, int utf8)
{
        const char *q = p;

        logprintf("      %*s = ", ewidth, e);
        if (p == NULL) {
                logprintf("NULL\n");
                return;
        }
        logprintf("\"");
        while (*p != '\0') {
                unsigned int c = 0xff & *p++;
                switch (c) {
                case '\a': logprintf("\\a"); break;
                case '\b': logprintf("\\b"); break;
                case '\n': logprintf("\\n"); break;
                case '\r': logprintf("\\r"); break;
                default:
                        if (c >= 32 && c < 127)
                                logprintf("%c", c);
                        else
                                logprintf("\\x%02X", c);
                }
        }
        logprintf("\"");
        logprintf(" (length %d)", q == NULL ? -1 : (int)strlen(q));

        /*
         * If the current string is UTF-8, dump its code points.
         */
        if (utf8) {
                size_t len;
                uint32_t uc;
                int n;
                int cnt = 0;

                p = q;
                len = strlen(p);
                logprintf(" [");
                while ((n = _utf8_to_unicode(&uc, p, len)) > 0) {
                        if (p != q)
                                logprintf(" ");
                        logprintf("%04X", uc);
                        p += n;
                        len -= n;
                        cnt++;
                }
                logprintf("]");
                logprintf(" (count %d", cnt);
                if (n < 0) {
                        logprintf(",unknown %d bytes", len);
                }
                logprintf(")");

        }
        logprintf("\n");
}

/* Verify two strings are equal, dump them if not. */
int
assertion_equal_string(const char *file, int line,
    const char *v1, const char *e1,
    const char *v2, const char *e2,
    void *extra, int utf8)
{
        int l1, l2;

        assertion_count(file, line);
        if (v1 == v2 || (v1 != NULL && v2 != NULL && strcmp(v1, v2) == 0))
                return (1);
        failure_start(file, line, "%s != %s", e1, e2);
        l1 = (int)strlen(e1);
        l2 = (int)strlen(e2);
        if (l1 < l2)
                l1 = l2;
        strdump(e1, v1, l1, utf8);
        strdump(e2, v2, l1, utf8);
        failure_finish(extra);
        return (0);
}

static void
wcsdump(const char *e, const wchar_t *w)
{
        logprintf("      %s = ", e);
        if (w == NULL) {
                logprintf("(null)");
                return;
        }
        logprintf("\"");
        while (*w != L'\0') {
                unsigned int c = *w++;
                if (c >= 32 && c < 127)
                        logprintf("%c", c);
                else if (c < 256)
                        logprintf("\\x%02X", c);
                else if (c < 0x10000)
                        logprintf("\\u%04X", c);
                else
                        logprintf("\\U%08X", c);
        }
        logprintf("\"\n");
}

#ifndef HAVE_WCSCMP
static int
wcscmp(const wchar_t *s1, const wchar_t *s2)
{

        while (*s1 == *s2++) {
                if (*s1++ == L'\0')
                        return 0;
        }
        if (*s1 > *--s2)
                return 1;
        else
                return -1;
}
#endif

/* Verify that two wide strings are equal, dump them if not. */
int
assertion_equal_wstring(const char *file, int line,
    const wchar_t *v1, const char *e1,
    const wchar_t *v2, const char *e2,
    void *extra)
{
        assertion_count(file, line);
        if (v1 == v2)
                return (1);
        if (v1 != NULL && v2 != NULL && wcscmp(v1, v2) == 0)
                return (1);
        failure_start(file, line, "%s != %s", e1, e2);
        wcsdump(e1, v1);
        wcsdump(e2, v2);
        failure_finish(extra);
        return (0);
}

/*
 * Pretty standard hexdump routine.  As a bonus, if ref != NULL, then
 * any bytes in p that differ from ref will be highlighted with '_'
 * before and after the hex value.
 */
static void
hexdump(const char *p, const char *ref, size_t l, size_t offset)
{
        size_t i, j;
        char sep;

        if (p == NULL) {
                logprintf("(null)\n");
                return;
        }
        for(i=0; i < l; i+=16) {
                logprintf("%04x", (unsigned)(i + offset));
                sep = ' ';
                for (j = 0; j < 16 && i + j < l; j++) {
                        if (ref != NULL && p[i + j] != ref[i + j])
                                sep = '_';
                        logprintf("%c%02x", sep, 0xff & (int)p[i+j]);
                        if (ref != NULL && p[i + j] == ref[i + j])
                                sep = ' ';
                }
                for (; j < 16; j++) {
                        logprintf("%c  ", sep);
                        sep = ' ';
                }
                logprintf("%c", sep);
                for (j=0; j < 16 && i + j < l; j++) {
                        int c = p[i + j];
                        if (c >= ' ' && c <= 126)
                                logprintf("%c", c);
                        else
                                logprintf(".");
                }
                logprintf("\n");
        }
}

/* Verify that two blocks of memory are the same, display the first
 * block of differences if they're not. */
int
assertion_equal_mem(const char *file, int line,
    const void *_v1, const char *e1,
    const void *_v2, const char *e2,
    size_t l, const char *ld, void *extra)
{
        const char *v1 = (const char *)_v1;
        const char *v2 = (const char *)_v2;
        size_t offset;

        assertion_count(file, line);
        if (v1 == v2 || (v1 != NULL && v2 != NULL && memcmp(v1, v2, l) == 0))
                return (1);
        if (v1 == NULL || v2 == NULL)
                return (0);

        failure_start(file, line, "%s != %s", e1, e2);
        logprintf("      size %s = %d\n", ld, (int)l);
        /* Dump 48 bytes (3 lines) so that the first difference is
         * in the second line. */
        offset = 0;
        while (l > 64 && memcmp(v1, v2, 32) == 0) {
                /* Two lines agree, so step forward one line. */
                v1 += 16;
                v2 += 16;
                l -= 16;
                offset += 16;
        }
        logprintf("      Dump of %s\n", e1);
        hexdump(v1, v2, l < 128 ? l : 128, offset);
        logprintf("      Dump of %s\n", e2);
        hexdump(v2, v1, l < 128 ? l : 128, offset);
        logprintf("\n");
        failure_finish(extra);
        return (0);
}

/* Verify that a block of memory is filled with the specified byte. */
int
assertion_memory_filled_with(const char *file, int line,
    const void *_v1, const char *vd,
    size_t l, const char *ld,
    char b, const char *bd, void *extra)
{
        const char *v1 = (const char *)_v1;
        size_t c = 0;
        size_t i;
        (void)ld; /* UNUSED */

        assertion_count(file, line);

        for (i = 0; i < l; ++i) {
                if (v1[i] == b) {
                        ++c;
                }
        }
        if (c == l)
                return (1);

        failure_start(file, line, "%s (size %d) not filled with %s", vd, (int)l, bd);
        logprintf("   Only %d bytes were correct\n", (int)c);
        failure_finish(extra);
        return (0);
}

/* Verify that the named file exists and is empty. */
int
assertion_empty_file(const char *filename, int line, const char *f1)
{
        char buff[1024];
        struct stat st;
        ssize_t s;
        FILE *f;

        assertion_count(filename, line);

        if (stat(f1, &st) != 0) {
                failure_start(filename, line, "Stat failed: %s", f1);
                failure_finish(NULL);
                return (0);
        }
        if (st.st_size == 0)
                return (1);

        failure_start(filename, line, "File should be empty: %s", f1);
        logprintf("    File size: %d\n", (int)st.st_size);
        logprintf("    Contents:\n");
        f = fopen(f1, "rb");
        if (f == NULL) {
                logprintf("    Unable to open %s\n", f1);
        } else {
                s = ((off_t)sizeof(buff) < st.st_size) ?
                    (ssize_t)sizeof(buff) : (ssize_t)st.st_size;
                s = fread(buff, 1, s, f);
                hexdump(buff, NULL, s, 0);
                fclose(f);
        }
        failure_finish(NULL);
        return (0);
}

/* Verify that the named file exists and is not empty. */
int
assertion_non_empty_file(const char *filename, int line, const char *f1)
{
        struct stat st;

        assertion_count(filename, line);

        if (stat(f1, &st) != 0) {
                failure_start(filename, line, "Stat failed: %s", f1);
                failure_finish(NULL);
                return (0);
        }
        if (st.st_size == 0) {
                failure_start(filename, line, "File empty: %s", f1);
                failure_finish(NULL);
                return (0);
        }
        return (1);
}

/* Verify that two files have the same contents. */
/* TODO: hexdump the first bytes that actually differ. */
int
assertion_equal_file(const char *filename, int line, const char *fn1, const char *fn2)
{
        char buff1[1024];
        char buff2[1024];
        FILE *f1, *f2;
        int n1, n2;

        assertion_count(filename, line);

        f1 = fopen(fn1, "rb");
        f2 = fopen(fn2, "rb");
        if (f1 == NULL || f2 == NULL) {
                if (f1) fclose(f1);
                if (f2) fclose(f2);
                return (0);
        }
        for (;;) {
                n1 = (int)fread(buff1, 1, sizeof(buff1), f1);
                n2 = (int)fread(buff2, 1, sizeof(buff2), f2);
                if (n1 != n2)
                        break;
                if (n1 == 0 && n2 == 0) {
                        fclose(f1);
                        fclose(f2);
                        return (1);
                }
                if (memcmp(buff1, buff2, n1) != 0)
                        break;
        }
        fclose(f1);
        fclose(f2);
        failure_start(filename, line, "Files not identical");
        logprintf("  file1=\"%s\"\n", fn1);
        logprintf("  file2=\"%s\"\n", fn2);
        failure_finish(NULL);
        return (0);
}

/* Verify that the named file does exist. */
int
assertion_file_exists(const char *filename, int line, const char *f)
{
        assertion_count(filename, line);

#if defined(_WIN32) && !defined(__CYGWIN__)
        if (!_access(f, 0))
                return (1);
#else
        if (!access(f, F_OK))
                return (1);
#endif
        failure_start(filename, line, "File should exist: %s", f);
        failure_finish(NULL);
        return (0);
}

/* Verify that the named file doesn't exist. */
int
assertion_file_not_exists(const char *filename, int line, const char *f)
{
        assertion_count(filename, line);

#if defined(_WIN32) && !defined(__CYGWIN__)
        if (_access(f, 0))
                return (1);
#else
        if (access(f, F_OK))
                return (1);
#endif
        failure_start(filename, line, "File should not exist: %s", f);
        failure_finish(NULL);
        return (0);
}

/* Compare the contents of a file to a block of memory. */
int
assertion_file_contents(const char *filename, int line, const void *buff, int s, const char *fn)
{
        char *contents;
        FILE *f;
        int n;

        assertion_count(filename, line);

        f = fopen(fn, "rb");
        if (f == NULL) {
                failure_start(filename, line,
                    "File should exist: %s", fn);
                failure_finish(NULL);
                return (0);
        }
        contents = malloc(s * 2);
        n = (int)fread(contents, 1, s * 2, f);
        fclose(f);
        if (n == s && memcmp(buff, contents, s) == 0) {
                free(contents);
                return (1);
        }
        failure_start(filename, line, "File contents don't match");
        logprintf("  file=\"%s\"\n", fn);
        if (n > 0)
                hexdump(contents, buff, n > 512 ? 512 : n, 0);
        else {
                logprintf("  File empty, contents should be:\n");
                hexdump(buff, NULL, s > 512 ? 512 : s, 0);
        }
        failure_finish(NULL);
        free(contents);
        return (0);
}

/* Check the contents of a text file, being tolerant of line endings. */
int
assertion_text_file_contents(const char *filename, int line, const char *buff, const char *fn)
{
        char *contents;
        const char *btxt, *ftxt;
        FILE *f;
        int n, s;

        assertion_count(filename, line);
        f = fopen(fn, "r");
        if (f == NULL) {
                failure_start(filename, line,
                    "File doesn't exist: %s", fn);
                failure_finish(NULL);
                return (0);
        }
        s = (int)strlen(buff);
        contents = malloc(s * 2 + 128);
        n = (int)fread(contents, 1, s * 2 + 128 - 1, f);
        if (n >= 0)
                contents[n] = '\0';
        fclose(f);
        /* Compare texts. */
        btxt = buff;
        ftxt = (const char *)contents;
        while (*btxt != '\0' && *ftxt != '\0') {
                if (*btxt == *ftxt) {
                        ++btxt;
                        ++ftxt;
                        continue;
                }
                if (btxt[0] == '\n' && ftxt[0] == '\r' && ftxt[1] == '\n') {
                        /* Pass over different new line characters. */
                        ++btxt;
                        ftxt += 2;
                        continue;
                }
                break;
        }
        if (*btxt == '\0' && *ftxt == '\0') {
                free(contents);
                return (1);
        }
        failure_start(filename, line, "Contents don't match");
        logprintf("  file=\"%s\"\n", fn);
        if (n > 0) {
                hexdump(contents, buff, n, 0);
                logprintf("  expected\n", fn);
                hexdump(buff, contents, s, 0);
        } else {
                logprintf("  File empty, contents should be:\n");
                hexdump(buff, NULL, s, 0);
        }
        failure_finish(NULL);
        free(contents);
        return (0);
}

/* Verify that a text file contains the specified lines, regardless of order */
/* This could be more efficient if we sorted both sets of lines, etc, but
 * since this is used only for testing and only ever deals with a dozen or so
 * lines at a time, this relatively crude approach is just fine. */
int
assertion_file_contains_lines_any_order(const char *file, int line,
    const char *pathname, const char *lines[])
{
        char *buff;
        size_t buff_size;
        size_t expected_count, actual_count, i, j;
        char **expected = NULL;
        char *p, **actual = NULL;
        char c;
        int expected_failure = 0, actual_failure = 0;

        assertion_count(file, line);

        buff = slurpfile(&buff_size, "%s", pathname);
        if (buff == NULL) {
                failure_start(pathname, line, "Can't read file: %s", pathname);
                failure_finish(NULL);
                return (0);
        }

        /* Make a copy of the provided lines and count up the expected
         * file size. */
        for (i = 0; lines[i] != NULL; ++i) {
        }
        expected_count = i;
        if (expected_count) {
                expected = malloc(sizeof(char *) * expected_count);
                if (expected == NULL) {
                        failure_start(pathname, line, "Can't allocate memory");
                        failure_finish(NULL);
                        free(expected);
                        return (0);
                }
                for (i = 0; lines[i] != NULL; ++i) {
                        expected[i] = strdup(lines[i]);
                }
        }

        /* Break the file into lines */
        actual_count = 0;
        for (c = '\0', p = buff; p < buff + buff_size; ++p) {
                if (*p == '\x0d' || *p == '\x0a')
                        *p = '\0';
                if (c == '\0' && *p != '\0')
                        ++actual_count;
                c = *p;
        }
        if (actual_count) {
                actual = calloc(sizeof(char *), actual_count);
                if (actual == NULL) {
                        failure_start(pathname, line, "Can't allocate memory");
                        failure_finish(NULL);
                        free(expected);
                        return (0);
                }
                for (j = 0, p = buff; p < buff + buff_size;
                    p += 1 + strlen(p)) {
                        if (*p != '\0') {
                                actual[j] = p;
                                ++j;
                        }
                }
        }

        /* Erase matching lines from both lists */
        for (i = 0; i < expected_count; ++i) {
                if (expected[i] == NULL)
                        continue;
                for (j = 0; j < actual_count; ++j) {
                        if (actual[j] == NULL)
                                continue;
                        if (strcmp(expected[i], actual[j]) == 0) {
                                free(expected[i]);
                                expected[i] = NULL;
                                actual[j] = NULL;
                                break;
                        }
                }
        }

        /* If there's anything left, it's a failure */
        for (i = 0; i < expected_count; ++i) {
                if (expected[i] != NULL)
                        ++expected_failure;
        }
        for (j = 0; j < actual_count; ++j) {
                if (actual[j] != NULL)
                        ++actual_failure;
        }
        if (expected_failure == 0 && actual_failure == 0) {
                free(buff);
                free(expected);
                free(actual);
                return (1);
        }
        failure_start(file, line, "File doesn't match: %s", pathname);
        for (i = 0; i < expected_count; ++i) {
                if (expected[i] != NULL) {
                        logprintf("  Expected but not present: %s\n", expected[i]);
                        free(expected[i]);
                }
        }
        for (j = 0; j < actual_count; ++j) {
                if (actual[j] != NULL)
                        logprintf("  Present but not expected: %s\n", actual[j]);
        }
        failure_finish(NULL);
        free(buff);
        free(expected);
        free(actual);
        return (0);
}

/* Test that two paths point to the same file. */
/* As a side-effect, asserts that both files exist. */
static int
is_hardlink(const char *file, int line,
    const char *path1, const char *path2)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
        BY_HANDLE_FILE_INFORMATION bhfi1, bhfi2;
        int r;

        assertion_count(file, line);
        r = my_GetFileInformationByName(path1, &bhfi1);
        if (r == 0) {
                failure_start(file, line, "File %s can't be inspected?", path1);
                failure_finish(NULL);
                return (0);
        }
        r = my_GetFileInformationByName(path2, &bhfi2);
        if (r == 0) {
                failure_start(file, line, "File %s can't be inspected?", path2);
                failure_finish(NULL);
                return (0);
        }
        return (bhfi1.dwVolumeSerialNumber == bhfi2.dwVolumeSerialNumber
                && bhfi1.nFileIndexHigh == bhfi2.nFileIndexHigh
                && bhfi1.nFileIndexLow == bhfi2.nFileIndexLow);
#else
        struct stat st1, st2;
        int r;

        assertion_count(file, line);
        r = lstat(path1, &st1);
        if (r != 0) {
                failure_start(file, line, "File should exist: %s", path1);
                failure_finish(NULL);
                return (0);
        }
        r = lstat(path2, &st2);
        if (r != 0) {
                failure_start(file, line, "File should exist: %s", path2);
                failure_finish(NULL);
                return (0);
        }
        return (st1.st_ino == st2.st_ino && st1.st_dev == st2.st_dev);
#endif
}

int
assertion_is_hardlink(const char *file, int line,
    const char *path1, const char *path2)
{
        if (is_hardlink(file, line, path1, path2))
                return (1);
        failure_start(file, line,
            "Files %s and %s are not hardlinked", path1, path2);
        failure_finish(NULL);
        return (0);
}

int
assertion_is_not_hardlink(const char *file, int line,
    const char *path1, const char *path2)
{
        if (!is_hardlink(file, line, path1, path2))
                return (1);
        failure_start(file, line,
            "Files %s and %s should not be hardlinked", path1, path2);
        failure_finish(NULL);
        return (0);
}

/* Verify a/b/mtime of 'pathname'. */
/* If 'recent', verify that it's within last 10 seconds. */
static int
assertion_file_time(const char *file, int line,
    const char *pathname, long t, long nsec, char type, int recent)
{
        long long filet, filet_nsec;
        int r;

#if defined(_WIN32) && !defined(__CYGWIN__)
#define EPOC_TIME       (116444736000000000ULL)
        FILETIME fxtime, fbirthtime, fatime, fmtime;
        ULARGE_INTEGER wintm;
        HANDLE h;
        fxtime.dwLowDateTime = 0;
        fxtime.dwHighDateTime = 0;

        assertion_count(file, line);
        /* Note: FILE_FLAG_BACKUP_SEMANTICS applies to open
         * a directory file. If not, CreateFile() will fail when
         * the pathname is a directory. */
        h = CreateFile(pathname, FILE_READ_ATTRIBUTES, 0, NULL,
            OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
        if (h == INVALID_HANDLE_VALUE) {
                failure_start(file, line, "Can't access %s\n", pathname);
                failure_finish(NULL);
                return (0);
        }
        r = GetFileTime(h, &fbirthtime, &fatime, &fmtime);
        switch (type) {
        case 'a': fxtime = fatime; break;
        case 'b': fxtime = fbirthtime; break;
        case 'm': fxtime = fmtime; break;
        }
        CloseHandle(h);
        if (r == 0) {
                failure_start(file, line, "Can't GetFileTime %s\n", pathname);
                failure_finish(NULL);
                return (0);
        }
        wintm.LowPart = fxtime.dwLowDateTime;
        wintm.HighPart = fxtime.dwHighDateTime;
        filet = (wintm.QuadPart - EPOC_TIME) / 10000000;
        filet_nsec = ((wintm.QuadPart - EPOC_TIME) % 10000000) * 100;
        nsec = (nsec / 100) * 100; /* Round the request */
#else
        struct stat st;

        assertion_count(file, line);
        r = lstat(pathname, &st);
        if (r != 0) {
                failure_start(file, line, "Can't stat %s\n", pathname);
                failure_finish(NULL);
                return (0);
        }
        switch (type) {
        case 'a': filet = st.st_atime; break;
        case 'm': filet = st.st_mtime; break;
        case 'b': filet = 0; break;
        default: fprintf(stderr, "INTERNAL: Bad type %c for file time", type);
                exit(1);
        }
#if defined(__FreeBSD__)
        switch (type) {
        case 'a': filet_nsec = st.st_atimespec.tv_nsec; break;
        case 'b': filet = st.st_birthtime;
                /* FreeBSD filesystems that don't support birthtime
                 * (e.g., UFS1) always return -1 here. */
                if (filet == -1) {
                        return (1);
                }
                filet_nsec = st.st_birthtimespec.tv_nsec; break;
        case 'm': filet_nsec = st.st_mtimespec.tv_nsec; break;
        default: fprintf(stderr, "INTERNAL: Bad type %c for file time", type);
                exit(1);
        }
        /* FreeBSD generally only stores to microsecond res, so round. */
        filet_nsec = (filet_nsec / 1000) * 1000;
        nsec = (nsec / 1000) * 1000;
#else
        filet_nsec = nsec = 0;  /* Generic POSIX only has whole seconds. */
        if (type == 'b') return (1); /* Generic POSIX doesn't have birthtime */
#if defined(__HAIKU__)
        if (type == 'a') return (1); /* Haiku doesn't have atime. */
#endif
#endif
#endif
        if (recent) {
                /* Check that requested time is up-to-date. */
                time_t now = time(NULL);
                if (filet < now - 10 || filet > now + 1) {
                        failure_start(file, line,
                            "File %s has %ctime %lld, %lld seconds ago\n",
                            pathname, type, filet, now - filet);
                        failure_finish(NULL);
                        return (0);
                }
        } else if (filet != t || filet_nsec != nsec) {
                failure_start(file, line,
                    "File %s has %ctime %lld.%09lld, expected %lld.%09lld",
                    pathname, type, filet, filet_nsec, t, nsec);
                failure_finish(NULL);
                return (0);
        }
        return (1);
}

/* Verify atime of 'pathname'. */
int
assertion_file_atime(const char *file, int line,
    const char *pathname, long t, long nsec)
{
        return assertion_file_time(file, line, pathname, t, nsec, 'a', 0);
}

/* Verify atime of 'pathname' is up-to-date. */
int
assertion_file_atime_recent(const char *file, int line, const char *pathname)
{
        return assertion_file_time(file, line, pathname, 0, 0, 'a', 1);
}

/* Verify birthtime of 'pathname'. */
int
assertion_file_birthtime(const char *file, int line,
    const char *pathname, long t, long nsec)
{
        return assertion_file_time(file, line, pathname, t, nsec, 'b', 0);
}

/* Verify birthtime of 'pathname' is up-to-date. */
int
assertion_file_birthtime_recent(const char *file, int line,
    const char *pathname)
{
        return assertion_file_time(file, line, pathname, 0, 0, 'b', 1);
}

/* Verify mtime of 'pathname'. */
int
assertion_file_mtime(const char *file, int line,
    const char *pathname, long t, long nsec)
{
        return assertion_file_time(file, line, pathname, t, nsec, 'm', 0);
}

/* Verify mtime of 'pathname' is up-to-date. */
int
assertion_file_mtime_recent(const char *file, int line, const char *pathname)
{
        return assertion_file_time(file, line, pathname, 0, 0, 'm', 1);
}

/* Verify number of links to 'pathname'. */
int
assertion_file_nlinks(const char *file, int line,
    const char *pathname, int nlinks)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
        BY_HANDLE_FILE_INFORMATION bhfi;
        int r;

        assertion_count(file, line);
        r = my_GetFileInformationByName(pathname, &bhfi);
        if (r != 0 && bhfi.nNumberOfLinks == (DWORD)nlinks)
                return (1);
        failure_start(file, line, "File %s has %d links, expected %d",
            pathname, bhfi.nNumberOfLinks, nlinks);
        failure_finish(NULL);
        return (0);
#else
        struct stat st;
        int r;

        assertion_count(file, line);
        r = lstat(pathname, &st);
        if (r == 0 && (int)st.st_nlink == nlinks)
                        return (1);
        failure_start(file, line, "File %s has %d links, expected %d",
            pathname, st.st_nlink, nlinks);
        failure_finish(NULL);
        return (0);
#endif
}

/* Verify size of 'pathname'. */
int
assertion_file_size(const char *file, int line, const char *pathname, long size)
{
        int64_t filesize;
        int r;

        assertion_count(file, line);
#if defined(_WIN32) && !defined(__CYGWIN__)
        {
                BY_HANDLE_FILE_INFORMATION bhfi;
                r = !my_GetFileInformationByName(pathname, &bhfi);
                filesize = ((int64_t)bhfi.nFileSizeHigh << 32) + bhfi.nFileSizeLow;
        }
#else
        {
                struct stat st;
                r = lstat(pathname, &st);
                filesize = st.st_size;
        }
#endif
        if (r == 0 && filesize == size)
                        return (1);
        failure_start(file, line, "File %s has size %ld, expected %ld",
            pathname, (long)filesize, (long)size);
        failure_finish(NULL);
        return (0);
}

/* Verify mode of 'pathname'. */
int
assertion_file_mode(const char *file, int line, const char *pathname, int expected_mode)
{
        int mode;
        int r;

        assertion_count(file, line);
#if defined(_WIN32) && !defined(__CYGWIN__)
        failure_start(file, line, "assertFileMode not yet implemented for Windows");
#else
        {
                struct stat st;
                r = lstat(pathname, &st);
                mode = (int)(st.st_mode & 0777);
        }
        if (r == 0 && mode == expected_mode)
                        return (1);
        failure_start(file, line, "File %s has mode %o, expected %o",
            pathname, mode, expected_mode);
#endif
        failure_finish(NULL);
        return (0);
}

/* Assert that 'pathname' is a dir.  If mode >= 0, verify that too. */
int
assertion_is_dir(const char *file, int line, const char *pathname, int mode)
{
        struct stat st;
        int r;

#if defined(_WIN32) && !defined(__CYGWIN__)
        (void)mode; /* UNUSED */
#endif
        assertion_count(file, line);
        r = lstat(pathname, &st);
        if (r != 0) {
                failure_start(file, line, "Dir should exist: %s", pathname);
                failure_finish(NULL);
                return (0);
        }
        if (!S_ISDIR(st.st_mode)) {
                failure_start(file, line, "%s is not a dir", pathname);
                failure_finish(NULL);
                return (0);
        }
#if !defined(_WIN32) || defined(__CYGWIN__)
        /* Windows doesn't handle permissions the same way as POSIX,
         * so just ignore the mode tests. */
        /* TODO: Can we do better here? */
        if (mode >= 0 && (mode_t)mode != (st.st_mode & 07777)) {
                failure_start(file, line, "Dir %s has wrong mode", pathname);
                logprintf("  Expected: 0%3o\n", mode);
                logprintf("  Found: 0%3o\n", st.st_mode & 07777);
                failure_finish(NULL);
                return (0);
        }
#endif
        return (1);
}

/* Verify that 'pathname' is a regular file.  If 'mode' is >= 0,
 * verify that too. */
int
assertion_is_reg(const char *file, int line, const char *pathname, int mode)
{
        struct stat st;
        int r;

#if defined(_WIN32) && !defined(__CYGWIN__)
        (void)mode; /* UNUSED */
#endif
        assertion_count(file, line);
        r = lstat(pathname, &st);
        if (r != 0 || !S_ISREG(st.st_mode)) {
                failure_start(file, line, "File should exist: %s", pathname);
                failure_finish(NULL);
                return (0);
        }
#if !defined(_WIN32) || defined(__CYGWIN__)
        /* Windows doesn't handle permissions the same way as POSIX,
         * so just ignore the mode tests. */
        /* TODO: Can we do better here? */
        if (mode >= 0 && (mode_t)mode != (st.st_mode & 07777)) {
                failure_start(file, line, "File %s has wrong mode", pathname);
                logprintf("  Expected: 0%3o\n", mode);
                logprintf("  Found: 0%3o\n", st.st_mode & 07777);
                failure_finish(NULL);
                return (0);
        }
#endif
        return (1);
}

/* Check whether 'pathname' is a symbolic link.  If 'contents' is
 * non-NULL, verify that the symlink has those contents. */
static int
is_symlink(const char *file, int line,
    const char *pathname, const char *contents)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
        (void)pathname; /* UNUSED */
        (void)contents; /* UNUSED */
        assertion_count(file, line);
        /* Windows sort-of has real symlinks, but they're only usable
         * by privileged users and are crippled even then, so there's
         * really not much point in bothering with this. */
        return (0);
#else
        char buff[300];
        struct stat st;
        ssize_t linklen;
        int r;

        assertion_count(file, line);
        r = lstat(pathname, &st);
        if (r != 0) {
                failure_start(file, line,
                    "Symlink should exist: %s", pathname);
                failure_finish(NULL);
                return (0);
        }
        if (!S_ISLNK(st.st_mode))
                return (0);
        if (contents == NULL)
                return (1);
        linklen = readlink(pathname, buff, sizeof(buff));
        if (linklen < 0) {
                failure_start(file, line, "Can't read symlink %s", pathname);
                failure_finish(NULL);
                return (0);
        }
        buff[linklen] = '\0';
        if (strcmp(buff, contents) != 0)
                return (0);
        return (1);
#endif
}

/* Assert that path is a symlink that (optionally) contains contents. */
int
assertion_is_symlink(const char *file, int line,
    const char *path, const char *contents)
{
        if (is_symlink(file, line, path, contents))
                return (1);
        if (contents)
                failure_start(file, line, "File %s is not a symlink to %s",
                    path, contents);
        else
                failure_start(file, line, "File %s is not a symlink", path);
        failure_finish(NULL);
        return (0);
}


/* Create a directory and report any errors. */
int
assertion_make_dir(const char *file, int line, const char *dirname, int mode)
{
        assertion_count(file, line);
#if defined(_WIN32) && !defined(__CYGWIN__)
        (void)mode; /* UNUSED */
        if (0 == _mkdir(dirname))
                return (1);
#else
        if (0 == mkdir(dirname, mode))
                return (1);
#endif
        failure_start(file, line, "Could not create directory %s", dirname);
        failure_finish(NULL);
        return(0);
}

/* Create a file with the specified contents and report any failures. */
int
assertion_make_file(const char *file, int line,
    const char *path, int mode, int csize, const void *contents)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
        /* TODO: Rework this to set file mode as well. */
        FILE *f;
        (void)mode; /* UNUSED */
        assertion_count(file, line);
        f = fopen(path, "wb");
        if (f == NULL) {
                failure_start(file, line, "Could not create file %s", path);
                failure_finish(NULL);
                return (0);
        }
        if (contents != NULL) {
                size_t wsize;

                if (csize < 0)
                        wsize = strlen(contents);
                else
                        wsize = (size_t)csize;
                if (wsize != fwrite(contents, 1, wsize, f)) {
                        fclose(f);
                        failure_start(file, line,
                            "Could not write file %s", path);
                        failure_finish(NULL);
                        return (0);
                }
        }
        fclose(f);
        return (1);
#else
        int fd;
        assertion_count(file, line);
        fd = open(path, O_CREAT | O_WRONLY, mode >= 0 ? mode : 0644);
        if (fd < 0) {
                failure_start(file, line, "Could not create %s", path);
                failure_finish(NULL);
                return (0);
        }
        if (contents != NULL) {
                ssize_t wsize;

                if (csize < 0)
                        wsize = (ssize_t)strlen(contents);
                else
                        wsize = (ssize_t)csize;
                if (wsize != write(fd, contents, wsize)) {
                        close(fd);
                        failure_start(file, line,
                            "Could not write to %s", path);
                        failure_finish(NULL);
                        return (0);
                }
        }
        close(fd);
        return (1);
#endif
}

/* Create a hardlink and report any failures. */
int
assertion_make_hardlink(const char *file, int line,
    const char *newpath, const char *linkto)
{
        int succeeded;

        assertion_count(file, line);
#if defined(_WIN32) && !defined(__CYGWIN__)
        succeeded = my_CreateHardLinkA(newpath, linkto);
#elif HAVE_LINK
        succeeded = !link(linkto, newpath);
#else
        succeeded = 0;
#endif
        if (succeeded)
                return (1);
        failure_start(file, line, "Could not create hardlink");
        logprintf("   New link: %s\n", newpath);
        logprintf("   Old name: %s\n", linkto);
        failure_finish(NULL);
        return(0);
}

/* Create a symlink and report any failures. */
int
assertion_make_symlink(const char *file, int line,
    const char *newpath, const char *linkto)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
        int targetIsDir = 0;  /* TODO: Fix this */
        assertion_count(file, line);
        if (my_CreateSymbolicLinkA(newpath, linkto, targetIsDir))
                return (1);
#elif HAVE_SYMLINK
        assertion_count(file, line);
        if (0 == symlink(linkto, newpath))
                return (1);
#endif
        failure_start(file, line, "Could not create symlink");
        logprintf("   New link: %s\n", newpath);
        logprintf("   Old name: %s\n", linkto);
        failure_finish(NULL);
        return(0);
}

/* Set umask, report failures. */
int
assertion_umask(const char *file, int line, int mask)
{
        assertion_count(file, line);
        (void)file; /* UNUSED */
        (void)line; /* UNUSED */
        umask(mask);
        return (1);
}

/* Set times, report failures. */
int
assertion_utimes(const char *file, int line,
    const char *pathname, long at, long at_nsec, long mt, long mt_nsec)
{
        int r;

#if defined(_WIN32) && !defined(__CYGWIN__)
#define WINTIME(sec, nsec) ((Int32x32To64(sec, 10000000) + EPOC_TIME)\
         + (((nsec)/1000)*10))
        HANDLE h;
        ULARGE_INTEGER wintm;
        FILETIME fatime, fmtime;
        FILETIME *pat, *pmt;

        assertion_count(file, line);
        h = CreateFileA(pathname,GENERIC_READ | GENERIC_WRITE,
                    FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
                    FILE_FLAG_BACKUP_SEMANTICS, NULL);
        if (h == INVALID_HANDLE_VALUE) {
                failure_start(file, line, "Can't access %s\n", pathname);
                failure_finish(NULL);
                return (0);
        }

        if (at > 0 || at_nsec > 0) {
                wintm.QuadPart = WINTIME(at, at_nsec);
                fatime.dwLowDateTime = wintm.LowPart;
                fatime.dwHighDateTime = wintm.HighPart;
                pat = &fatime;
        } else
                pat = NULL;
        if (mt > 0 || mt_nsec > 0) {
                wintm.QuadPart = WINTIME(mt, mt_nsec);
                fmtime.dwLowDateTime = wintm.LowPart;
                fmtime.dwHighDateTime = wintm.HighPart;
                pmt = &fmtime;
        } else
                pmt = NULL;
        if (pat != NULL || pmt != NULL)
                r = SetFileTime(h, NULL, pat, pmt);
        else
                r = 1;
        CloseHandle(h);
        if (r == 0) {
                failure_start(file, line, "Can't SetFileTime %s\n", pathname);
                failure_finish(NULL);
                return (0);
        }
        return (1);
#else /* defined(_WIN32) && !defined(__CYGWIN__) */
        struct stat st;
        struct timeval times[2];

#if !defined(__FreeBSD__)
        mt_nsec = at_nsec = 0;  /* Generic POSIX only has whole seconds. */
#endif
        if (mt == 0 && mt_nsec == 0 && at == 0 && at_nsec == 0)
                return (1);

        r = lstat(pathname, &st);
        if (r < 0) {
                failure_start(file, line, "Can't stat %s\n", pathname);
                failure_finish(NULL);
                return (0);
        }

        if (mt == 0 && mt_nsec == 0) {
                mt = st.st_mtime;
#if defined(__FreeBSD__)
                mt_nsec = st.st_mtimespec.tv_nsec;
                /* FreeBSD generally only stores to microsecond res, so round. */
                mt_nsec = (mt_nsec / 1000) * 1000;
#endif
        }
        if (at == 0 && at_nsec == 0) {
                at = st.st_atime;
#if defined(__FreeBSD__)
                at_nsec = st.st_atimespec.tv_nsec;
                /* FreeBSD generally only stores to microsecond res, so round. */
                at_nsec = (at_nsec / 1000) * 1000;
#endif
        }

        times[1].tv_sec = mt;
        times[1].tv_usec = mt_nsec / 1000;

        times[0].tv_sec = at;
        times[0].tv_usec = at_nsec / 1000;

#ifdef HAVE_LUTIMES
        r = lutimes(pathname, times);
#else
        r = utimes(pathname, times);
#endif
        if (r < 0) {
                failure_start(file, line, "Can't utimes %s\n", pathname);
                failure_finish(NULL);
                return (0);
        }
        return (1);
#endif /* defined(_WIN32) && !defined(__CYGWIN__) */
}

/* Set nodump, report failures. */
int
assertion_nodump(const char *file, int line, const char *pathname)
{
#if defined(HAVE_STRUCT_STAT_ST_FLAGS) && defined(UF_NODUMP)
        int r;

        assertion_count(file, line);
        r = chflags(pathname, UF_NODUMP);
        if (r < 0) {
                failure_start(file, line, "Can't set nodump %s\n", pathname);
                failure_finish(NULL);
                return (0);
        }
#elif defined(EXT2_IOC_GETFLAGS) && defined(HAVE_WORKING_EXT2_IOC_GETFLAGS)\
         && defined(EXT2_NODUMP_FL)
        int fd, r, flags;

        assertion_count(file, line);
        fd = open(pathname, O_RDONLY | O_NONBLOCK);
        if (fd < 0) {
                failure_start(file, line, "Can't open %s\n", pathname);
                failure_finish(NULL);
                return (0);
        }
        r = ioctl(fd, EXT2_IOC_GETFLAGS, &flags);
        if (r < 0) {
                failure_start(file, line, "Can't get flags %s\n", pathname);
                failure_finish(NULL);
                return (0);
        }
        flags |= EXT2_NODUMP_FL;
        r = ioctl(fd, EXT2_IOC_SETFLAGS, &flags);
        if (r < 0) {
                failure_start(file, line, "Can't set nodump %s\n", pathname);
                failure_finish(NULL);
                return (0);
        }
        close(fd);
#else
        (void)pathname; /* UNUSED */
        assertion_count(file, line);
#endif
        return (1);
}

/*
 *
 *  UTILITIES for use by tests.
 *
 */

/*
 * Check whether platform supports symlinks.  This is intended
 * for tests to use in deciding whether to bother testing symlink
 * support; if the platform doesn't support symlinks, there's no point
 * in checking whether the program being tested can create them.
 *
 * Note that the first time this test is called, we actually go out to
 * disk to create and verify a symlink.  This is necessary because
 * symlink support is actually a property of a particular filesystem
 * and can thus vary between directories on a single system.  After
 * the first call, this returns the cached result from memory, so it's
 * safe to call it as often as you wish.
 */
int
canSymlink(void)
{
        /* Remember the test result */
        static int value = 0, tested = 0;
        if (tested)
                return (value);

        ++tested;
        assertion_make_file(__FILE__, __LINE__, "canSymlink.0", 0644, 1, "a");
        /* Note: Cygwin has its own symlink() emulation that does not
         * use the Win32 CreateSymbolicLink() function. */
#if defined(_WIN32) && !defined(__CYGWIN__)
        value = my_CreateSymbolicLinkA("canSymlink.1", "canSymlink.0", 0)
            && is_symlink(__FILE__, __LINE__, "canSymlink.1", "canSymlink.0");
#elif HAVE_SYMLINK
        value = (0 == symlink("canSymlink.0", "canSymlink.1"))
            && is_symlink(__FILE__, __LINE__, "canSymlink.1","canSymlink.0");
#endif
        return (value);
}

/* Platform-dependent options for hiding the output of a subcommand. */
#if defined(_WIN32) && !defined(__CYGWIN__)
static const char *redirectArgs = ">NUL 2>NUL"; /* Win32 cmd.exe */
#else
static const char *redirectArgs = ">/dev/null 2>/dev/null"; /* POSIX 'sh' */
#endif
/*
 * Can this platform run the bzip2 program?
 */
int
canBzip2(void)
{
        static int tested = 0, value = 0;
        if (!tested) {
                tested = 1;
                if (systemf("bzip2 -d -V %s", redirectArgs) == 0)
                        value = 1;
        }
        return (value);
}

/*
 * Can this platform run the grzip program?
 */
int
canGrzip(void)
{
        static int tested = 0, value = 0;
        if (!tested) {
                tested = 1;
                if (systemf("grzip -V %s", redirectArgs) == 0)
                        value = 1;
        }
        return (value);
}

/*
 * Can this platform run the gzip program?
 */
int
canGzip(void)
{
        static int tested = 0, value = 0;
        if (!tested) {
                tested = 1;
                if (systemf("gzip -V %s", redirectArgs) == 0)
                        value = 1;
        }
        return (value);
}

/*
 * Can this platform run the lrzip program?
 */
int
canRunCommand(const char *cmd)
{
  static int tested = 0, value = 0;
  if (!tested) {
    tested = 1;
    if (systemf("%s %s", cmd, redirectArgs) == 0)
      value = 1;
  }
  return (value);
}

int
canLrzip(void)
{
        static int tested = 0, value = 0;
        if (!tested) {
                tested = 1;
                if (systemf("lrzip -V %s", redirectArgs) == 0)
                        value = 1;
        }
        return (value);
}

/*
 * Can this platform run the lz4 program?
 */
int
canLz4(void)
{
        static int tested = 0, value = 0;
        if (!tested) {
                tested = 1;
                if (systemf("lz4 -V %s", redirectArgs) == 0)
                        value = 1;
        }
        return (value);
}

/*
 * Can this platform run the lzip program?
 */
int
canLzip(void)
{
        static int tested = 0, value = 0;
        if (!tested) {
                tested = 1;
                if (systemf("lzip -V %s", redirectArgs) == 0)
                        value = 1;
        }
        return (value);
}

/*
 * Can this platform run the lzma program?
 */
int
canLzma(void)
{
        static int tested = 0, value = 0;
        if (!tested) {
                tested = 1;
                if (systemf("lzma -V %s", redirectArgs) == 0)
                        value = 1;
        }
        return (value);
}

/*
 * Can this platform run the lzop program?
 */
int
canLzop(void)
{
        static int tested = 0, value = 0;
        if (!tested) {
                tested = 1;
                if (systemf("lzop -V %s", redirectArgs) == 0)
                        value = 1;
        }
        return (value);
}

/*
 * Can this platform run the xz program?
 */
int
canXz(void)
{
        static int tested = 0, value = 0;
        if (!tested) {
                tested = 1;
                if (systemf("xz -V %s", redirectArgs) == 0)
                        value = 1;
        }
        return (value);
}

/*
 * Can this filesystem handle nodump flags.
 */
#if defined(HAVE_STRUCT_STAT_ST_FLAGS) && defined(UF_NODUMP)

int
canNodump(void)
{
        const char *path = "cannodumptest";
        struct stat sb;

        assertion_make_file(__FILE__, __LINE__, path, 0644, 0, NULL);
        if (chflags(path, UF_NODUMP) < 0)
                return (0);
        if (stat(path, &sb) < 0)
                return (0);
        if (sb.st_flags & UF_NODUMP)
                return (1);
        return (0);
}

#elif defined(EXT2_IOC_GETFLAGS) && defined(HAVE_WORKING_EXT2_IOC_GETFLAGS)\
         && defined(EXT2_NODUMP_FL)

int
canNodump(void)
{
        const char *path = "cannodumptest";
        int fd, r, flags;

        assertion_make_file(__FILE__, __LINE__, path, 0644, 0, NULL);
        fd = open(path, O_RDONLY | O_NONBLOCK);
        if (fd < 0)
                return (0);
        r = ioctl(fd, EXT2_IOC_GETFLAGS, &flags);
        if (r < 0)
                return (0);
        flags |= EXT2_NODUMP_FL;
        r = ioctl(fd, EXT2_IOC_SETFLAGS, &flags);
        if (r < 0)
                return (0);
        close(fd);
        fd = open(path, O_RDONLY | O_NONBLOCK);
        if (fd < 0)
                return (0);
        r = ioctl(fd, EXT2_IOC_GETFLAGS, &flags);
        if (r < 0)
                return (0);
        close(fd);
        if (flags & EXT2_NODUMP_FL)
                return (1);
        return (0);
}

#else

int
canNodump()
{
        return (0);
}

#endif

/*
 * Sleep as needed; useful for verifying disk timestamp changes by
 * ensuring that the wall-clock time has actually changed before we
 * go back to re-read something from disk.
 */
void
sleepUntilAfter(time_t t)
{
        while (t >= time(NULL))
#if defined(_WIN32) && !defined(__CYGWIN__)
                Sleep(500);
#else
                sleep(1);
#endif
}

/*
 * Call standard system() call, but build up the command line using
 * sprintf() conventions.
 */
int
systemf(const char *fmt, ...)
{
        char buff[8192];
        va_list ap;
        int r;

        va_start(ap, fmt);
        vsprintf(buff, fmt, ap);
        if (verbosity > VERBOSITY_FULL)
                logprintf("Cmd: %s\n", buff);
        r = system(buff);
        va_end(ap);
        return (r);
}

/*
 * Slurp a file into memory for ease of comparison and testing.
 * Returns size of file in 'sizep' if non-NULL, null-terminates
 * data in memory for ease of use.
 */
char *
slurpfile(size_t * sizep, const char *fmt, ...)
{
        char filename[8192];
        struct stat st;
        va_list ap;
        char *p;
        ssize_t bytes_read;
        FILE *f;
        int r;

        va_start(ap, fmt);
        vsprintf(filename, fmt, ap);
        va_end(ap);

        f = fopen(filename, "rb");
        if (f == NULL) {
                /* Note: No error; non-existent file is okay here. */
                return (NULL);
        }
        r = fstat(fileno(f), &st);
        if (r != 0) {
                logprintf("Can't stat file %s\n", filename);
                fclose(f);
                return (NULL);
        }
        p = malloc((size_t)st.st_size + 1);
        if (p == NULL) {
                logprintf("Can't allocate %ld bytes of memory to read file %s\n",
                    (long int)st.st_size, filename);
                fclose(f);
                return (NULL);
        }
        bytes_read = fread(p, 1, (size_t)st.st_size, f);
        if (bytes_read < st.st_size) {
                logprintf("Can't read file %s\n", filename);
                fclose(f);
                free(p);
                return (NULL);
        }
        p[st.st_size] = '\0';
        if (sizep != NULL)
                *sizep = (size_t)st.st_size;
        fclose(f);
        return (p);
}

/*
 * Slurp a file into memory for ease of comparison and testing.
 * Returns size of file in 'sizep' if non-NULL, null-terminates
 * data in memory for ease of use.
 */
void
dumpfile(const char *filename, void *data, size_t len)
{
        ssize_t bytes_written;
        FILE *f;

        f = fopen(filename, "wb");
        if (f == NULL) {
                logprintf("Can't open file %s for writing\n", filename);
                return;
        }
        bytes_written = fwrite(data, 1, len, f);
        if (bytes_written < (ssize_t)len)
                logprintf("Can't write file %s\n", filename);
        fclose(f);
}

/* Read a uuencoded file from the reference directory, decode, and
 * write the result into the current directory. */
#define VALID_UUDECODE(c) (c >= 32 && c <= 96)
#define UUDECODE(c) (((c) - 0x20) & 0x3f)
void
extract_reference_file(const char *name)
{
        char buff[1024];
        FILE *in, *out;

        sprintf(buff, "%s/%s.uu", refdir, name);
        in = fopen(buff, "r");
        failure("Couldn't open reference file %s", buff);
        assert(in != NULL);
        if (in == NULL)
                return;
        /* Read up to and including the 'begin' line. */
        for (;;) {
                if (fgets(buff, sizeof(buff), in) == NULL) {
                        /* TODO: This is a failure. */
                        return;
                }
                if (memcmp(buff, "begin ", 6) == 0)
                        break;
        }
        /* Now, decode the rest and write it. */
        out = fopen(name, "wb");
        while (fgets(buff, sizeof(buff), in) != NULL) {
                char *p = buff;
                int bytes;

                if (memcmp(buff, "end", 3) == 0)
                        break;

                bytes = UUDECODE(*p++);
                while (bytes > 0) {
                        int n = 0;
                        /* Write out 1-3 bytes from that. */
                        if (bytes > 0) {
                                assert(VALID_UUDECODE(p[0]));
                                assert(VALID_UUDECODE(p[1]));
                                n = UUDECODE(*p++) << 18;
                                n |= UUDECODE(*p++) << 12;
                                fputc(n >> 16, out);
                                --bytes;
                        }
                        if (bytes > 0) {
                                assert(VALID_UUDECODE(p[0]));
                                n |= UUDECODE(*p++) << 6;
                                fputc((n >> 8) & 0xFF, out);
                                --bytes;
                        }
                        if (bytes > 0) {
                                assert(VALID_UUDECODE(p[0]));
                                n |= UUDECODE(*p++);
                                fputc(n & 0xFF, out);
                                --bytes;
                        }
                }
        }
        fclose(out);
        fclose(in);
}

void
copy_reference_file(const char *name)
{
        char buff[1024];
        FILE *in, *out;
        size_t rbytes;

        sprintf(buff, "%s/%s", refdir, name);
        in = fopen(buff, "rb");
        failure("Couldn't open reference file %s", buff);
        assert(in != NULL);
        if (in == NULL)
                return;
        /* Now, decode the rest and write it. */
        /* Not a lot of error checking here; the input better be right. */
        out = fopen(name, "wb");
        while ((rbytes = fread(buff, 1, sizeof(buff), in)) > 0) {
                if (fwrite(buff, 1, rbytes, out) != rbytes) {
                        logprintf("Error: fwrite\n");
                        break;
                }
        }
        fclose(out);
        fclose(in);
}

int
is_LargeInode(const char *file)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
        BY_HANDLE_FILE_INFORMATION bhfi;
        int r;

        r = my_GetFileInformationByName(file, &bhfi);
        if (r != 0)
                return (0);
        return (bhfi.nFileIndexHigh & 0x0000FFFFUL);
#else
        struct stat st;
        int64_t ino;

        if (stat(file, &st) < 0)
                return (0);
        ino = (int64_t)st.st_ino;
        return (ino > 0xffffffff);
#endif
}

void
extract_reference_files(const char **names)
{
        while (names && *names)
                extract_reference_file(*names++);
}

/*
 *
 * TEST management
 *
 */

/*
 * "list.h" is simply created by "grep DEFINE_TEST test_*.c"; it has
 * a line like
 *      DEFINE_TEST(test_function)
 * for each test.
 */

/* Use "list.h" to declare all of the test functions. */
#undef DEFINE_TEST
#define DEFINE_TEST(name) void name(void);
#include "list.h"

/* Use "list.h" to create a list of all tests (functions and names). */
#undef DEFINE_TEST
#define DEFINE_TEST(n) { n, #n, 0 },
struct test_list_t tests[] = {
        #include "list.h"
};

/*
 * Summarize repeated failures in the just-completed test.
 */
static void
test_summarize(int failed, int skips_num)
{
        unsigned int i;

        switch (verbosity) {
        case VERBOSITY_SUMMARY_ONLY:
                printf(failed ? "E" : ".");
                fflush(stdout);
                break;
        case VERBOSITY_PASSFAIL:
                printf(failed ? "FAIL\n" : skips_num ? "ok (S)\n" : "ok\n");
                break;
        }

        log_console = (verbosity == VERBOSITY_LIGHT_REPORT);

        for (i = 0; i < sizeof(failed_lines)/sizeof(failed_lines[0]); i++) {
                if (failed_lines[i].count > 1 && !failed_lines[i].skip)
                        logprintf("%s:%d: Summary: Failed %d times\n",
                            failed_filename, i, failed_lines[i].count);
        }
        /* Clear the failure history for the next file. */
        failed_filename = NULL;
        memset(failed_lines, 0, sizeof(failed_lines));
}

/*
 * Actually run a single test, with appropriate setup and cleanup.
 */
static int
test_run(int i, const char *tmpdir)
{
        char workdir[1024];
        char logfilename[64];
        int failures_before = failures;
        int skips_before = skips;
        int oldumask;

        switch (verbosity) {
        case VERBOSITY_SUMMARY_ONLY: /* No per-test reports at all */
                break;
        case VERBOSITY_PASSFAIL: /* rest of line will include ok/FAIL marker */
                printf("%3d: %-64s", i, tests[i].name);
                fflush(stdout);
                break;
        default: /* Title of test, details will follow */
                printf("%3d: %s\n", i, tests[i].name);
        }

        /* Chdir to the top-level work directory. */
        if (!assertChdir(tmpdir)) {
                fprintf(stderr,
                    "ERROR: Can't chdir to top work dir %s\n", tmpdir);
                exit(1);
        }
        /* Create a log file for this test. */
        sprintf(logfilename, "%s.log", tests[i].name);
        logfile = fopen(logfilename, "w");
        fprintf(logfile, "%s\n\n", tests[i].name);
        /* Chdir() to a work dir for this specific test. */
        snprintf(workdir, sizeof(workdir), "%s/%s", tmpdir, tests[i].name);
        testworkdir = workdir;
        if (!assertMakeDir(testworkdir, 0755)
            || !assertChdir(testworkdir)) {
                fprintf(stderr,
                    "ERROR: Can't chdir to work dir %s\n", testworkdir);
                exit(1);
        }
        /* Explicitly reset the locale before each test. */
        setlocale(LC_ALL, "C");
        /* Record the umask before we run the test. */
        umask(oldumask = umask(0));
        /*
         * Run the actual test.
         */
        (*tests[i].func)();
        /*
         * Clean up and report afterwards.
         */
        testworkdir = NULL;
        /* Restore umask */
        umask(oldumask);
        /* Reset locale. */
        setlocale(LC_ALL, "C");
        /* Reset directory. */
        if (!assertChdir(tmpdir)) {
                fprintf(stderr, "ERROR: Couldn't chdir to temp dir %s\n",
                    tmpdir);
                exit(1);
        }
        /* Report per-test summaries. */
        tests[i].failures = failures - failures_before;
        test_summarize(tests[i].failures, skips - skips_before);
        /* Close the per-test log file. */
        fclose(logfile);
        logfile = NULL;
        /* If there were no failures, we can remove the work dir and logfile. */
        if (tests[i].failures == 0) {
                if (!keep_temp_files && assertChdir(tmpdir)) {
#if defined(_WIN32) && !defined(__CYGWIN__)
                        /* Make sure not to leave empty directories.
                         * Sometimes a processing of closing files used by tests
                         * is not done, then rmdir will be failed and it will
                         * leave a empty test directory. So we should wait a few
                         * seconds and retry rmdir. */
                        int r, t;
                        for (t = 0; t < 10; t++) {
                                if (t > 0)
                                        Sleep(1000);
                                r = systemf("rmdir /S /Q %s", tests[i].name);
                                if (r == 0)
                                        break;
                        }
                        systemf("del %s", logfilename);
#else
                        systemf("rm -rf %s", tests[i].name);
                        systemf("rm %s", logfilename);
#endif
                }
        }
        /* Return appropriate status. */
        return (tests[i].failures);
}

/*
 *
 *
 * MAIN and support routines.
 *
 *
 */

static void
usage(const char *program)
{
        static const int limit = sizeof(tests) / sizeof(tests[0]);
        int i;

        printf("Usage: %s [options] <test> <test> ...\n", program);
        printf("Default is to run all tests.\n");
        printf("Otherwise, specify the numbers of the tests you wish to run.\n");
        printf("Options:\n");
        printf("  -d  Dump core after any failure, for debugging.\n");
        printf("  -k  Keep all temp files.\n");
        printf("      Default: temp files for successful tests deleted.\n");
#ifdef PROGRAM
        printf("  -p <path>  Path to executable to be tested.\n");
        printf("      Default: path taken from " ENVBASE " environment variable.\n");
#endif
        printf("  -q  Quiet.\n");
        printf("  -r <dir>   Path to dir containing reference files.\n");
        printf("      Default: Current directory.\n");
        printf("  -u  Keep running specifies tests until one fails.\n");
        printf("  -v  Verbose.\n");
        printf("Available tests:\n");
        for (i = 0; i < limit; i++)
                printf("  %d: %s\n", i, tests[i].name);
        exit(1);
}

static char *
get_refdir(const char *d)
{
        size_t tried_size, buff_size;
        char *buff, *tried, *pwd = NULL, *p = NULL;

#ifdef PATH_MAX
        buff_size = PATH_MAX;
#else
        buff_size = 8192;
#endif
        buff = calloc(buff_size, 1);
        if (buff == NULL) {
                fprintf(stderr, "Unable to allocate memory\n");
                exit(1);
        }

        /* Allocate a buffer to hold the various directories we checked. */
        tried_size = buff_size * 2;
        tried = calloc(tried_size, 1);
        if (tried == NULL) {
                fprintf(stderr, "Unable to allocate memory\n");
                exit(1);
        }

        /* If a dir was specified, try that */
        if (d != NULL) {
                pwd = NULL;
                snprintf(buff, buff_size, "%s", d);
                p = slurpfile(NULL, "%s/%s", buff, KNOWNREF);
                if (p != NULL) goto success;
                strncat(tried, buff, tried_size - strlen(tried) - 1);
                strncat(tried, "\n", tried_size - strlen(tried) - 1);
                goto failure;
        }

        /* Get the current dir. */
#ifdef PATH_MAX
        pwd = getcwd(NULL, PATH_MAX);/* Solaris getcwd needs the size. */
#else
        pwd = getcwd(NULL, 0);
#endif
        while (pwd[strlen(pwd) - 1] == '\n')
                pwd[strlen(pwd) - 1] = '\0';

        /* Look for a known file. */
        snprintf(buff, buff_size, "%s", pwd);
        p = slurpfile(NULL, "%s/%s", buff, KNOWNREF);
        if (p != NULL) goto success;
        strncat(tried, buff, tried_size - strlen(tried) - 1);
        strncat(tried, "\n", tried_size - strlen(tried) - 1);

        snprintf(buff, buff_size, "%s/test", pwd);
        p = slurpfile(NULL, "%s/%s", buff, KNOWNREF);
        if (p != NULL) goto success;
        strncat(tried, buff, tried_size - strlen(tried) - 1);
        strncat(tried, "\n", tried_size - strlen(tried) - 1);

#if defined(LIBRARY)
        snprintf(buff, buff_size, "%s/%s/test", pwd, LIBRARY);
#else
        snprintf(buff, buff_size, "%s/%s/test", pwd, PROGRAM);
#endif
        p = slurpfile(NULL, "%s/%s", buff, KNOWNREF);
        if (p != NULL) goto success;
        strncat(tried, buff, tried_size - strlen(tried) - 1);
        strncat(tried, "\n", tried_size - strlen(tried) - 1);

#if defined(PROGRAM_ALIAS)
        snprintf(buff, buff_size, "%s/%s/test", pwd, PROGRAM_ALIAS);
        p = slurpfile(NULL, "%s/%s", buff, KNOWNREF);
        if (p != NULL) goto success;
        strncat(tried, buff, tried_size - strlen(tried) - 1);
        strncat(tried, "\n", tried_size - strlen(tried) - 1);
#endif

        if (memcmp(pwd, "/usr/obj", 8) == 0) {
                snprintf(buff, buff_size, "%s", pwd + 8);
                p = slurpfile(NULL, "%s/%s", buff, KNOWNREF);
                if (p != NULL) goto success;
                strncat(tried, buff, tried_size - strlen(tried) - 1);
                strncat(tried, "\n", tried_size - strlen(tried) - 1);

                snprintf(buff, buff_size, "%s/test", pwd + 8);
                p = slurpfile(NULL, "%s/%s", buff, KNOWNREF);
                if (p != NULL) goto success;
                strncat(tried, buff, tried_size - strlen(tried) - 1);
                strncat(tried, "\n", tried_size - strlen(tried) - 1);
        }

failure:
        printf("Unable to locate known reference file %s\n", KNOWNREF);
        printf("  Checked following directories:\n%s\n", tried);
        printf("Use -r option to specify full path to reference directory\n");
#if defined(_WIN32) && !defined(__CYGWIN__) && defined(_DEBUG)
        DebugBreak();
#endif
        exit(1);

success:
        free(p);
        free(pwd);
        free(tried);

        /* Copy result into a fresh buffer to reduce memory usage. */
        p = strdup(buff);
        free(buff);
        return p;
}

int
main(int argc, char **argv)
{
        static const int limit = sizeof(tests) / sizeof(tests[0]);
        int test_set[sizeof(tests) / sizeof(tests[0])];
        int i = 0, j = 0, tests_run = 0, tests_failed = 0, option;
        time_t now;
        char *refdir_alloc = NULL;
        const char *progname;
        char **saved_argv;
        const char *tmp, *option_arg, *p;
        char tmpdir[256], *pwd, *testprogdir, *tmp2 = NULL, *vlevel = NULL;
        char tmpdir_timestamp[256];

        (void)argc; /* UNUSED */

        /* Get the current dir. */
#ifdef PATH_MAX
        pwd = getcwd(NULL, PATH_MAX);/* Solaris getcwd needs the size. */
#else
        pwd = getcwd(NULL, 0);
#endif
        while (pwd[strlen(pwd) - 1] == '\n')
                pwd[strlen(pwd) - 1] = '\0';

#if defined(HAVE__CrtSetReportMode) && !defined(__WATCOMC__)
        /* To stop to run the default invalid parameter handler. */
        _set_invalid_parameter_handler(invalid_parameter_handler);
        /* Disable annoying assertion message box. */
        _CrtSetReportMode(_CRT_ASSERT, 0);
#endif

        /*
         * Name of this program, used to build root of our temp directory
         * tree.
         */
        progname = p = argv[0];
        if ((testprogdir = (char *)malloc(strlen(progname) + 1)) == NULL)
        {
                fprintf(stderr, "ERROR: Out of memory.");
                exit(1);
        }
        strcpy(testprogdir, progname);
        while (*p != '\0') {
                /* Support \ or / dir separators for Windows compat. */
                if (*p == '/' || *p == '\\')
                {
                        progname = p + 1;
                        i = j;
                }
                ++p;
                j++;
        }
        testprogdir[i] = '\0';
#if defined(_WIN32) && !defined(__CYGWIN__)
        if (testprogdir[0] != '/' && testprogdir[0] != '\\' &&
            !(((testprogdir[0] >= 'a' && testprogdir[0] <= 'z') ||
               (testprogdir[0] >= 'A' && testprogdir[0] <= 'Z')) &&
                testprogdir[1] == ':' &&
                (testprogdir[2] == '/' || testprogdir[2] == '\\')))
#else
        if (testprogdir[0] != '/')
#endif
        {
                /* Fixup path for relative directories. */
                if ((testprogdir = (char *)realloc(testprogdir,
                        strlen(pwd) + 1 + strlen(testprogdir) + 1)) == NULL)
                {
                        fprintf(stderr, "ERROR: Out of memory.");
                        exit(1);
                }
                memmove(testprogdir + strlen(pwd) + 1, testprogdir,
                    strlen(testprogdir) + 1);
                memcpy(testprogdir, pwd, strlen(pwd));
                testprogdir[strlen(pwd)] = '/';
        }

#ifdef PROGRAM
        /* Get the target program from environment, if available. */
        testprogfile = getenv(ENVBASE);
#endif

        if (getenv("TMPDIR") != NULL)
                tmp = getenv("TMPDIR");
        else if (getenv("TMP") != NULL)
                tmp = getenv("TMP");
        else if (getenv("TEMP") != NULL)
                tmp = getenv("TEMP");
        else if (getenv("TEMPDIR") != NULL)
                tmp = getenv("TEMPDIR");
        else
                tmp = "/tmp";

        /* Allow -d to be controlled through the environment. */
        if (getenv(ENVBASE "_DEBUG") != NULL)
                dump_on_failure = 1;

        /* Allow -v to be controlled through the environment. */
        if (getenv("_VERBOSITY_LEVEL") != NULL)
        {
                vlevel = getenv("_VERBOSITY_LEVEL");
                verbosity = atoi(vlevel);
                if (verbosity < VERBOSITY_SUMMARY_ONLY || verbosity > VERBOSITY_FULL)
                {
                        /* Unsupported verbosity levels are silently ignored */
                        vlevel = NULL;
                        verbosity = VERBOSITY_PASSFAIL;
                }
        }

        /* Get the directory holding test files from environment. */
        refdir = getenv(ENVBASE "_TEST_FILES");

        /*
         * Parse options, without using getopt(), which isn't available
         * on all platforms.
         */
        ++argv; /* Skip program name */
        while (*argv != NULL) {
                if (**argv != '-')
                        break;
                p = *argv++;
                ++p; /* Skip '-' */
                while (*p != '\0') {
                        option = *p++;
                        option_arg = NULL;
                        /* If 'opt' takes an argument, parse that. */
                        if (option == 'p' || option == 'r') {
                                if (*p != '\0')
                                        option_arg = p;
                                else if (*argv == NULL) {
                                        fprintf(stderr,
                                            "Option -%c requires argument.\n",
                                            option);
                                        usage(progname);
                                } else
                                        option_arg = *argv++;
                                p = ""; /* End of this option word. */
                        }

                        /* Now, handle the option. */
                        switch (option) {
                        case 'd':
                                dump_on_failure = 1;
                                break;
                        case 'k':
                                keep_temp_files = 1;
                                break;
                        case 'p':
#ifdef PROGRAM
                                testprogfile = option_arg;
#else
                                fprintf(stderr, "-p option not permitted\n");
                                usage(progname);
#endif
                                break;
                        case 'q':
                                if (!vlevel)
                                        verbosity--;
                                break;
                        case 'r':
                                refdir = option_arg;
                                break;
                        case 'u':
                                until_failure++;
                                break;
                        case 'v':
                                if (!vlevel)
                                        verbosity++;
                                break;
                        default:
                                fprintf(stderr, "Unrecognized option '%c'\n",
                                    option);
                                usage(progname);
                        }
                }
        }

        /*
         * Sanity-check that our options make sense.
         */
#ifdef PROGRAM
        if (testprogfile == NULL)
        {
                if ((tmp2 = (char *)malloc(strlen(testprogdir) + 1 +
                        strlen(PROGRAM) + 1)) == NULL)
                {
                        fprintf(stderr, "ERROR: Out of memory.");
                        exit(1);
                }
                strcpy(tmp2, testprogdir);
                strcat(tmp2, "/");
                strcat(tmp2, PROGRAM);
                testprogfile = tmp2;
        }

        {
                char *testprg;
#if defined(_WIN32) && !defined(__CYGWIN__)
                /* Command.com sometimes rejects '/' separators. */
                testprg = strdup(testprogfile);
                for (i = 0; testprg[i] != '\0'; i++) {
                        if (testprg[i] == '/')
                                testprg[i] = '\\';
                }
                testprogfile = testprg;
#endif
                /* Quote the name that gets put into shell command lines. */
                testprg = malloc(strlen(testprogfile) + 3);
                strcpy(testprg, "\"");
                strcat(testprg, testprogfile);
                strcat(testprg, "\"");
                testprog = testprg;
        }
#endif

#if !defined(_WIN32) && defined(SIGPIPE)
        {   /* Ignore SIGPIPE signals */
                struct sigaction sa;
                sa.sa_handler = SIG_IGN;
                sigemptyset(&sa.sa_mask);
                sa.sa_flags = 0;
                sigaction(SIGPIPE, &sa, NULL);
        }
#endif

        /*
         * Create a temp directory for the following tests.
         * Include the time the tests started as part of the name,
         * to make it easier to track the results of multiple tests.
         */
        now = time(NULL);
        for (i = 0; ; i++) {
                strftime(tmpdir_timestamp, sizeof(tmpdir_timestamp),
                    "%Y-%m-%dT%H.%M.%S",
                    localtime(&now));
                sprintf(tmpdir, "%s/%s.%s-%03d", tmp, progname,
                    tmpdir_timestamp, i);
                if (assertMakeDir(tmpdir,0755))
                        break;
                if (i >= 999) {
                        fprintf(stderr,
                            "ERROR: Unable to create temp directory %s\n",
                            tmpdir);
                        exit(1);
                }
        }

        /*
         * If the user didn't specify a directory for locating
         * reference files, try to find the reference files in
         * the "usual places."
         */
        refdir = refdir_alloc = get_refdir(refdir);

        /*
         * Banner with basic information.
         */
        printf("\n");
        printf("If tests fail or crash, details will be in:\n");
        printf("   %s\n", tmpdir);
        printf("\n");
        if (verbosity > VERBOSITY_SUMMARY_ONLY) {
                printf("Reference files will be read from: %s\n", refdir);
#ifdef PROGRAM
                printf("Running tests on: %s\n", testprog);
#endif
                printf("Exercising: ");
                fflush(stdout);
                printf("%s\n", EXTRA_VERSION);
        } else {
                printf("Running ");
                fflush(stdout);
        }

        /*
         * Run some or all of the individual tests.
         */
        saved_argv = argv;
        do {
                argv = saved_argv;
                do {
                        int test_num;

                        test_num = get_test_set(test_set, limit, *argv, tests);
                        if (test_num < 0) {
                                printf("*** INVALID Test %s\n", *argv);
                                free(refdir_alloc);
                                free(testprogdir);
                                usage(progname);
                                return (1);
                        }
                        for (i = 0; i < test_num; i++) {
                                tests_run++;
                                if (test_run(test_set[i], tmpdir)) {
                                        tests_failed++;
                                        if (until_failure)
                                                goto finish;
                                }
                        }
                        if (*argv != NULL)
                                argv++;
                } while (*argv != NULL);
        } while (until_failure);

finish:
        /* Must be freed after all tests run */
        free(tmp2);
        free(testprogdir);
        free(pwd);

        /*
         * Report summary statistics.
         */
        if (verbosity > VERBOSITY_SUMMARY_ONLY) {
                printf("\n");
                printf("Totals:\n");
                printf("  Tests run:         %8d\n", tests_run);
                printf("  Tests failed:      %8d\n", tests_failed);
                printf("  Assertions checked:%8d\n", assertions);
                printf("  Assertions failed: %8d\n", failures);
                printf("  Skips reported:    %8d\n", skips);
        }
        if (failures) {
                printf("\n");
                printf("Failing tests:\n");
                for (i = 0; i < limit; ++i) {
                        if (tests[i].failures)
                                printf("  %d: %s (%d failures)\n", i,
                                    tests[i].name, tests[i].failures);
                }
                printf("\n");
                printf("Details for failing tests: %s\n", tmpdir);
                printf("\n");
        } else {
                if (verbosity == VERBOSITY_SUMMARY_ONLY)
                        printf("\n");
                printf("%d tests passed, no failures\n", tests_run);
        }

        free(refdir_alloc);

        /* If the final tmpdir is empty, we can remove it. */
        /* This should be the usual case when all tests succeed. */
        assertChdir("..");
        rmdir(tmpdir);

        return (tests_failed ? 1 : 0);
}