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ext/zstd/programs/fileio.c  view on Meta::CPAN

#    define z_const
#  endif
#endif

#if defined(ZSTD_LZMACOMPRESS) || defined(ZSTD_LZMADECOMPRESS)
#  include <lzma.h>
#endif

#define LZ4_MAGICNUMBER 0x184D2204
#if defined(ZSTD_LZ4COMPRESS) || defined(ZSTD_LZ4DECOMPRESS)
#  define LZ4F_ENABLE_OBSOLETE_ENUMS
#  include <lz4frame.h>
#  include <lz4.h>
#endif

char const* FIO_zlibVersion(void)
{
#if defined(ZSTD_GZCOMPRESS) || defined(ZSTD_GZDECOMPRESS)
    return zlibVersion();
#else
    return "Unsupported";
#endif
}

char const* FIO_lz4Version(void)
{
#if defined(ZSTD_LZ4COMPRESS) || defined(ZSTD_LZ4DECOMPRESS)
    /* LZ4_versionString() added in v1.7.3 */
#   if LZ4_VERSION_NUMBER >= 10703
        return LZ4_versionString();
#   else
#       define ZSTD_LZ4_VERSION LZ4_VERSION_MAJOR.LZ4_VERSION_MINOR.LZ4_VERSION_RELEASE
#       define ZSTD_LZ4_VERSION_STRING ZSTD_EXPAND_AND_QUOTE(ZSTD_LZ4_VERSION)
        return ZSTD_LZ4_VERSION_STRING;
#   endif
#else
    return "Unsupported";
#endif
}

char const* FIO_lzmaVersion(void)
{
#if defined(ZSTD_LZMACOMPRESS) || defined(ZSTD_LZMADECOMPRESS)
    return lzma_version_string();
#else
    return "Unsupported";
#endif
}


/*-*************************************
*  Constants
***************************************/
#define ADAPT_WINDOWLOG_DEFAULT 23   /* 8 MB */
#define DICTSIZE_MAX (32 MB)   /* protection against large input (attack scenario) */

#define FNSPACE 30

/* Default file permissions 0666 (modulated by umask) */
/* Temporary restricted file permissions are used when we're going to
 * chmod/chown at the end of the operation. */
#if !defined(_WIN32)
/* These macros aren't defined on windows. */
#define DEFAULT_FILE_PERMISSIONS (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
#define TEMPORARY_FILE_PERMISSIONS (S_IRUSR|S_IWUSR)
#else
#define DEFAULT_FILE_PERMISSIONS (0666)
#define TEMPORARY_FILE_PERMISSIONS (0600)
#endif

/*-************************************
*  Signal (Ctrl-C trapping)
**************************************/
static const char* g_artefact = NULL;
static void INThandler(int sig)
{
    assert(sig==SIGINT); (void)sig;
#if !defined(_MSC_VER)
    signal(sig, SIG_IGN);  /* this invocation generates a buggy warning in Visual Studio */
#endif
    if (g_artefact) {
        assert(UTIL_isRegularFile(g_artefact));
        remove(g_artefact);
    }
    DISPLAY("\n");
    exit(2);
}
static void addHandler(char const* dstFileName)
{
    if (UTIL_isRegularFile(dstFileName)) {
        g_artefact = dstFileName;
        signal(SIGINT, INThandler);
    } else {
        g_artefact = NULL;
    }
}
/* Idempotent */
static void clearHandler(void)
{
    if (g_artefact) signal(SIGINT, SIG_DFL);
    g_artefact = NULL;
}


/*-*********************************************************
*  Termination signal trapping (Print debug stack trace)
***********************************************************/
#if defined(__has_feature) && !defined(BACKTRACE_ENABLE) /* Clang compiler */
#  if (__has_feature(address_sanitizer))
#    define BACKTRACE_ENABLE 0
#  endif /* __has_feature(address_sanitizer) */
#elif defined(__SANITIZE_ADDRESS__) && !defined(BACKTRACE_ENABLE) /* GCC compiler */
#  define BACKTRACE_ENABLE 0
#endif

#if !defined(BACKTRACE_ENABLE)
/* automatic detector : backtrace enabled by default on linux+glibc and osx */
#  if (defined(__linux__) && (defined(__GLIBC__) && !defined(__UCLIBC__))) \
     || (defined(__APPLE__) && defined(__MACH__))
#    define BACKTRACE_ENABLE 1
#  else