X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/51b2a0fc603c8e4fe667bf7a278bd1ce151e38a3..ee7af1bd58a717601fc30b5e7702d688749d2419:/apt-pkg/contrib/fileutl.cc diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc index 1808489d7..e9d1ba1ce 100644 --- a/apt-pkg/contrib/fileutl.cc +++ b/apt-pkg/contrib/fileutl.cc @@ -44,14 +44,11 @@ #include #include -// FIXME: Compressor Fds have some speed disadvantages and are a bit buggy currently, -// so while the current implementation satisfies the testcases it is not a real option -// to disable it for now -#define APT_USE_ZLIB 1 -#if APT_USE_ZLIB -#include -#else -#pragma message "Usage of zlib is DISABLED!" +#ifdef HAVE_ZLIB + #include +#endif +#ifdef HAVE_BZ2 + #include #endif #ifdef WORDS_BIGENDIAN @@ -65,10 +62,15 @@ using namespace std; class FileFdPrivate { public: -#if APT_USE_ZLIB +#ifdef HAVE_ZLIB gzFile gz; #else void* gz; +#endif +#ifdef HAVE_BZ2 + BZFILE* bz2; +#else + void* bz2; #endif int compressed_fd; pid_t compressor_pid; @@ -76,7 +78,8 @@ class FileFdPrivate { APT::Configuration::Compressor compressor; unsigned int openmode; unsigned long long seekpos; - FileFdPrivate() : gz(NULL), compressed_fd(-1), compressor_pid(-1), pipe(false), + FileFdPrivate() : gz(NULL), bz2(NULL), + compressed_fd(-1), compressor_pid(-1), pipe(false), openmode(0), seekpos(0) {}; }; @@ -835,7 +838,6 @@ bool FileFd::Open(string FileName,unsigned int const Mode,CompressMode Compress, if (Compress == Auto && (Mode & WriteOnly) == WriteOnly) return _error->Error("Autodetection on %s only works in ReadOnly openmode!", FileName.c_str()); - // FIXME: Denote inbuilt compressors somehow - as we don't need to have the binaries for them std::vector const compressors = APT::Configuration::getCompressors(); std::vector::const_iterator compressor = compressors.begin(); if (Compress == Auto) @@ -1016,7 +1018,7 @@ bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::C d->compressor = compressor; if (compressor.Name == "." || compressor.Binary.empty() == true) return true; -#if APT_USE_ZLIB +#ifdef HAVE_ZLIB else if (compressor.Name == "gzip") { if ((Mode & ReadWrite) == ReadWrite) @@ -1024,13 +1026,29 @@ bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::C else if ((Mode & WriteOnly) == WriteOnly) d->gz = gzdopen(iFd, "w"); else - d->gz = gzdopen (iFd, "r"); + d->gz = gzdopen(iFd, "r"); if (d->gz == NULL) return false; Flags |= Compressed; return true; } #endif +#ifdef HAVE_BZ2 + else if (compressor.Name == "bzip2") + { + if ((Mode & ReadWrite) == ReadWrite) + d->bz2 = BZ2_bzdopen(iFd, "r+"); + else if ((Mode & WriteOnly) == WriteOnly) + d->bz2 = BZ2_bzdopen(iFd, "w"); + else + d->bz2 = BZ2_bzdopen(iFd, "r"); + if (d->bz2 == NULL) + return false; + Flags |= Compressed; + return true; + } +#endif + if ((Mode & ReadWrite) == ReadWrite) return _error->Error("ReadWrite mode is not supported for file %s", FileName.c_str()); @@ -1080,6 +1098,12 @@ bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::C dup2(d->compressed_fd,STDIN_FILENO); dup2(Pipe[1],STDOUT_FILENO); } + int const nullfd = open("/dev/null", O_WRONLY); + if (nullfd != -1) + { + dup2(nullfd,STDERR_FILENO); + close(nullfd); + } SetCloseExec(STDOUT_FILENO,false); SetCloseExec(STDIN_FILENO,false); @@ -1137,9 +1161,14 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual) *((char *)To) = '\0'; do { -#if APT_USE_ZLIB +#ifdef HAVE_ZLIB if (d->gz != NULL) - Res = gzread(d->gz,To,Size); + Res = gzread(d->gz,To,Size); + else +#endif +#ifdef HAVE_BZ2 + if (d->bz2 != NULL) + Res = BZ2_bzread(d->bz2,To,Size); else #endif Res = read(iFd,To,Size); @@ -1149,7 +1178,7 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual) if (errno == EINTR) continue; Flags |= Fail; -#if APT_USE_ZLIB +#ifdef HAVE_ZLIB if (d->gz != NULL) { int err; @@ -1157,6 +1186,15 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual) if (err != Z_ERRNO) return _error->Error("gzread: %s (%d: %s)", _("Read error"), err, errmsg); } +#endif +#ifdef HAVE_BZ2 + if (d->bz2 != NULL) + { + int err; + char const * const errmsg = BZ2_bzerror(d->bz2, &err); + if (err != BZ_IO_ERROR) + return _error->Error("BZ2_bzread: %s (%d: %s)", _("Read error"), err, errmsg); + } #endif return _error->Errno("read",_("Read error")); } @@ -1190,7 +1228,7 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual) char* FileFd::ReadLine(char *To, unsigned long long const Size) { *To = '\0'; -#if APT_USE_ZLIB +#ifdef HAVE_ZLIB if (d->gz != NULL) return gzgets(d->gz, To, Size); #endif @@ -1221,10 +1259,15 @@ bool FileFd::Write(const void *From,unsigned long long Size) errno = 0; do { -#if APT_USE_ZLIB +#ifdef HAVE_ZLIB if (d->gz != NULL) Res = gzwrite(d->gz,From,Size); else +#endif +#ifdef HAVE_BZ2 + if (d->bz2 != NULL) + Res = BZ2_bzwrite(d->bz2,(void*)From,Size); + else #endif Res = write(iFd,From,Size); if (Res < 0 && errno == EINTR) @@ -1232,6 +1275,24 @@ bool FileFd::Write(const void *From,unsigned long long Size) if (Res < 0) { Flags |= Fail; +#ifdef HAVE_ZLIB + if (d->gz != NULL) + { + int err; + char const * const errmsg = gzerror(d->gz, &err); + if (err != Z_ERRNO) + return _error->Error("gzwrite: %s (%d: %s)", _("Write error"), err, errmsg); + } +#endif +#ifdef HAVE_BZ2 + if (d->bz2 != NULL) + { + int err; + char const * const errmsg = BZ2_bzerror(d->bz2, &err); + if (err != BZ_IO_ERROR) + return _error->Error("BZ2_bzwrite: %s (%d: %s)", _("Write error"), err, errmsg); + } +#endif return _error->Errno("write",_("Write error")); } @@ -1246,6 +1307,28 @@ bool FileFd::Write(const void *From,unsigned long long Size) Flags |= Fail; return _error->Error(_("write, still have %llu to write but couldn't"), Size); +} +bool FileFd::Write(int Fd, const void *From, unsigned long long Size) +{ + int Res; + errno = 0; + do + { + Res = write(Fd,From,Size); + if (Res < 0 && errno == EINTR) + continue; + if (Res < 0) + return _error->Errno("write",_("Write error")); + + From = (char *)From + Res; + Size -= Res; + } + while (Res > 0 && Size > 0); + + if (Size == 0) + return true; + + return _error->Error(_("write, still have %llu to write but couldn't"), Size); } /*}}}*/ // FileFd::Seek - Seek in the file /*{{{*/ @@ -1253,7 +1336,11 @@ bool FileFd::Write(const void *From,unsigned long long Size) /* */ bool FileFd::Seek(unsigned long long To) { - if (d->pipe == true) + if (d->pipe == true +#ifdef HAVE_BZ2 + || d->bz2 != NULL +#endif + ) { // Our poor man seeking in pipes is costly, so try to avoid it unsigned long long seekpos = Tell(); @@ -1264,6 +1351,10 @@ bool FileFd::Seek(unsigned long long To) if ((d->openmode & ReadOnly) != ReadOnly) return _error->Error("Reopen is only implemented for read-only files!"); +#ifdef HAVE_BZ2 + if (d->bz2 != NULL) + BZ2_bzclose(d->bz2); +#endif close(iFd); iFd = 0; if (TemporaryFileName.empty() == false) @@ -1289,7 +1380,7 @@ bool FileFd::Seek(unsigned long long To) return true; } int res; -#if APT_USE_ZLIB +#ifdef HAVE_ZLIB if (d->gz) res = gzseek(d->gz,To,SEEK_SET); else @@ -1310,7 +1401,11 @@ bool FileFd::Seek(unsigned long long To) /* */ bool FileFd::Skip(unsigned long long Over) { - if (d->pipe == true) + if (d->pipe == true +#ifdef HAVE_BZ2 + || d->bz2 != NULL +#endif + ) { d->seekpos += Over; char buffer[1024]; @@ -1325,7 +1420,7 @@ bool FileFd::Skip(unsigned long long Over) } int res; -#if APT_USE_ZLIB +#ifdef HAVE_ZLIB if (d->gz != NULL) res = gzseek(d->gz,Over,SEEK_CUR); else @@ -1346,11 +1441,13 @@ bool FileFd::Skip(unsigned long long Over) /* */ bool FileFd::Truncate(unsigned long long To) { - if (d->gz != NULL) +#if defined HAVE_ZLIB || defined HAVE_BZ2 + if (d->gz != NULL || d->bz2 != NULL) { Flags |= Fail; - return _error->Error("Truncating gzipped files is not implemented (%s)", FileName.c_str()); + return _error->Error("Truncating compressed files is not implemented (%s)", FileName.c_str()); } +#endif if (ftruncate(iFd,To) != 0) { Flags |= Fail; @@ -1369,11 +1466,15 @@ unsigned long long FileFd::Tell() // seeking around, but not all users of FileFd use always Seek() and co // so d->seekpos isn't always true and we can just use it as a hint if // we have nothing else, but not always as an authority… - if (d->pipe == true) + if (d->pipe == true +#ifdef HAVE_BZ2 + || d->bz2 != NULL +#endif + ) return d->seekpos; off_t Res; -#if APT_USE_ZLIB +#ifdef HAVE_ZLIB if (d->gz != NULL) Res = gztell(d->gz); else @@ -1416,7 +1517,11 @@ unsigned long long FileFd::Size() // for compressor pipes st_size is undefined and at 'best' zero, // so we 'read' the content and 'seek' back - see there - if (d->pipe == true) + if (d->pipe == true +#ifdef HAVE_BZ2 + || (d->bz2 && size > 0) +#endif + ) { unsigned long long const oldSeek = Tell(); char ignore[1000]; @@ -1427,7 +1532,7 @@ unsigned long long FileFd::Size() size = Tell(); Seek(oldSeek); } -#if APT_USE_ZLIB +#ifdef HAVE_ZLIB // only check gzsize if we are actually a gzip file, just checking for // "gz" is not sufficient as uncompressed files could be opened with // gzopen in "direct" mode as well @@ -1500,13 +1605,18 @@ bool FileFd::Close() bool Res = true; if ((Flags & AutoClose) == AutoClose) { -#if APT_USE_ZLIB +#ifdef HAVE_ZLIB if (d != NULL && d->gz != NULL) { int const e = gzclose(d->gz); // gzdclose() on empty files always fails with "buffer error" here, ignore that if (e != 0 && e != Z_BUF_ERROR) Res &= _error->Errno("close",_("Problem closing the gzip file %s"), FileName.c_str()); } else +#endif +#ifdef HAVE_BZ2 + if (d != NULL && d->bz2 != NULL) + BZ2_bzclose(d->bz2); + else #endif if (iFd > 0 && close(iFd) != 0) Res &= _error->Errno("close",_("Problem closing the file %s"), FileName.c_str());