| | 1 | // -*- mode: cpp; mode: fold -*- |
| | 2 | // Description /*{{{*/ |
| | 3 | // $Id: dirstream.cc,v 1.2 2001/02/20 07:03:16 jgg Exp $ |
| | 4 | /* ###################################################################### |
| | 5 | |
| | 6 | Directory Stream |
| | 7 | |
| | 8 | This class provides a simple basic extractor that can be used for |
| | 9 | a number of purposes. |
| | 10 | |
| | 11 | ##################################################################### */ |
| | 12 | /*}}}*/ |
| | 13 | // Include Files /*{{{*/ |
| | 14 | #ifdef __GNUG__ |
| | 15 | #pragma implementation "apt-pkg/dirstream.h" |
| | 16 | #endif |
| | 17 | |
| | 18 | #include <apt-pkg/dirstream.h> |
| | 19 | #include <apt-pkg/error.h> |
| | 20 | |
| | 21 | #include <fcntl.h> |
| | 22 | #include <sys/stat.h> |
| | 23 | #include <sys/types.h> |
| | 24 | #include <errno.h> |
| | 25 | #include <utime.h> |
| | 26 | #include <unistd.h> |
| | 27 | /*}}}*/ |
| | 28 | |
| | 29 | // DirStream::DoItem - Process an item /*{{{*/ |
| | 30 | // --------------------------------------------------------------------- |
| | 31 | /* This is a very simple extractor, it does not deal with things like |
| | 32 | overwriting directories with files and so on. */ |
| | 33 | bool pkgDirStream::DoItem(Item &Itm,int &Fd) |
| | 34 | { |
| | 35 | switch (Itm.Type) |
| | 36 | { |
| | 37 | case Item::File: |
| | 38 | { |
| | 39 | /* Open the output file, NDELAY is used to prevent this from |
| | 40 | blowing up on device special files.. */ |
| | 41 | int iFd = open(Itm.Name,O_NDELAY|O_WRONLY|O_CREAT|O_TRUNC|O_APPEND, |
| | 42 | Itm.Mode); |
| | 43 | if (iFd < 0) |
| | 44 | return _error->Errno("open","Failed write file %s", |
| | 45 | Itm.Name); |
| | 46 | |
| | 47 | // fchmod deals with umask and fchown sets the ownership |
| | 48 | if (fchmod(iFd,Itm.Mode) != 0) |
| | 49 | return _error->Errno("fchmod","Failed write file %s", |
| | 50 | Itm.Name); |
| | 51 | if (fchown(iFd,Itm.UID,Itm.GID) != 0 && errno != EPERM) |
| | 52 | return _error->Errno("fchown","Failed write file %s", |
| | 53 | Itm.Name); |
| | 54 | Fd = iFd; |
| | 55 | return true; |
| | 56 | } |
| | 57 | |
| | 58 | case Item::HardLink: |
| | 59 | case Item::SymbolicLink: |
| | 60 | case Item::CharDevice: |
| | 61 | case Item::BlockDevice: |
| | 62 | case Item::Directory: |
| | 63 | case Item::FIFO: |
| | 64 | break; |
| | 65 | } |
| | 66 | |
| | 67 | return true; |
| | 68 | } |
| | 69 | /*}}}*/ |
| | 70 | // DirStream::FinishedFile - Finished processing a file /*{{{*/ |
| | 71 | // --------------------------------------------------------------------- |
| | 72 | /* */ |
| | 73 | bool pkgDirStream::FinishedFile(Item &Itm,int Fd) |
| | 74 | { |
| | 75 | if (Fd < 0) |
| | 76 | return true; |
| | 77 | |
| | 78 | if (close(Fd) != 0) |
| | 79 | return _error->Errno("close","Failed to close file %s",Itm.Name); |
| | 80 | |
| | 81 | /* Set the modification times. The only way it can fail is if someone |
| | 82 | has futzed with our file, which is intolerable :> */ |
| | 83 | struct utimbuf Time; |
| | 84 | Time.actime = Itm.MTime; |
| | 85 | Time.modtime = Itm.MTime; |
| | 86 | if (utime(Itm.Name,&Time) != 0) |
| | 87 | _error->Errno("utime","Failed to close file %s",Itm.Name); |
| | 88 | |
| | 89 | return true; |
| | 90 | } |
| | 91 | /*}}}*/ |
| | 92 | // DirStream::Fail - Failed processing a file /*{{{*/ |
| | 93 | // --------------------------------------------------------------------- |
| | 94 | /* */ |
| | 95 | bool pkgDirStream::Fail(Item &Itm,int Fd) |
| | 96 | { |
| | 97 | if (Fd < 0) |
| | 98 | return true; |
| | 99 | |
| | 100 | close(Fd); |
| | 101 | return false; |
| | 102 | } |
| | 103 | /*}}}*/ |
projects / apt.git / blame_incremental