// -*- mode: cpp; mode: fold -*- // Description /*{{{*/ // $Id: dirstream.cc,v 1.3.2.1 2004/01/16 18:58:50 mdz Exp $ /* ###################################################################### Directory Stream This class provides a simple basic extractor that can be used for a number of purposes. ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ #include<config.h> #include <apt-pkg/dirstream.h> #include <apt-pkg/error.h> #include <fcntl.h> #include <sys/stat.h> #include <sys/time.h> #include <errno.h> #include <unistd.h> #include <apti18n.h> /*}}}*/ // DirStream::DoItem - Process an item /*{{{*/ // --------------------------------------------------------------------- /* This is a very simple extractor, it does not deal with things like overwriting directories with files and so on. */ bool pkgDirStream::DoItem(Item &Itm,int &Fd) { switch (Itm.Type) { case Item::File: { /* Open the output file, NDELAY is used to prevent this from blowing up on device special files.. */ int iFd = open(Itm.Name,O_NDELAY|O_WRONLY|O_CREAT|O_TRUNC|O_APPEND, Itm.Mode); if (iFd < 0) return _error->Errno("open",_("Failed to write file %s"), Itm.Name); // fchmod deals with umask and fchown sets the ownership if (fchmod(iFd,Itm.Mode) != 0) { close(iFd); return _error->Errno("fchmod",_("Failed to write file %s"), Itm.Name); } if (fchown(iFd,Itm.UID,Itm.GID) != 0 && errno != EPERM) { close(iFd); return _error->Errno("fchown",_("Failed to write file %s"), Itm.Name); } Fd = iFd; return true; } case Item::HardLink: case Item::SymbolicLink: case Item::CharDevice: case Item::BlockDevice: case Item::Directory: { struct stat Buf; // check if the dir is already there, if so return true if (stat(Itm.Name,&Buf) == 0) { if(S_ISDIR(Buf.st_mode)) return true; // something else is there already, return false return false; } // nothing here, create the dir if(mkdir(Itm.Name,Itm.Mode) < 0) return false; return true; } case Item::FIFO: break; } return true; } /*}}}*/ // DirStream::FinishedFile - Finished processing a file /*{{{*/ // --------------------------------------------------------------------- /* */ bool pkgDirStream::FinishedFile(Item &Itm,int Fd) { if (Fd < 0) return true; /* Set the modification times. The only way it can fail is if someone has futzed with our file, which is intolerable :> */ struct timeval times[2]; times[0].tv_sec = times[1].tv_sec = Itm.MTime; times[0].tv_usec = times[1].tv_usec = 0; if (utimes(Itm.Name, times) != 0) _error->Errno("utimes", "Failed to set modification time for %s",Itm.Name); if (close(Fd) != 0) return _error->Errno("close",_("Failed to close file %s"),Itm.Name); return true; } /*}}}*/ // DirStream::Fail - Failed processing a file /*{{{*/ // --------------------------------------------------------------------- /* */ bool pkgDirStream::Fail(Item &/*Itm*/, int Fd) { if (Fd < 0) return true; close(Fd); return false; } /*}}}*/