| | 1 | // -*- mode: cpp; mode: fold -*- |
| | 2 | // Description /*{{{*/ |
| | 3 | // $Id: dirstream.cc,v 1.3.2.1 2004/01/16 18:58:50 mdz 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 | #include <apt-pkg/dirstream.h> |
| | 15 | #include <apt-pkg/error.h> |
| | 16 | |
| | 17 | #include <fcntl.h> |
| | 18 | #include <sys/stat.h> |
| | 19 | #include <sys/types.h> |
| | 20 | #include <errno.h> |
| | 21 | #include <utime.h> |
| | 22 | #include <unistd.h> |
| | 23 | #include <apti18n.h> |
| | 24 | /*}}}*/ |
| | 25 | |
| | 26 | // DirStream::DoItem - Process an item /*{{{*/ |
| | 27 | // --------------------------------------------------------------------- |
| | 28 | /* This is a very simple extractor, it does not deal with things like |
| | 29 | overwriting directories with files and so on. */ |
| | 30 | bool pkgDirStream::DoItem(Item &Itm,int &Fd) |
| | 31 | { |
| | 32 | switch (Itm.Type) |
| | 33 | { |
| | 34 | case Item::File: |
| | 35 | { |
| | 36 | /* Open the output file, NDELAY is used to prevent this from |
| | 37 | blowing up on device special files.. */ |
| | 38 | int iFd = open(Itm.Name,O_NDELAY|O_WRONLY|O_CREAT|O_TRUNC|O_APPEND, |
| | 39 | Itm.Mode); |
| | 40 | if (iFd < 0) |
| | 41 | return _error->Errno("open",_("Failed to write file %s"), |
| | 42 | Itm.Name); |
| | 43 | |
| | 44 | // fchmod deals with umask and fchown sets the ownership |
| | 45 | if (fchmod(iFd,Itm.Mode) != 0) |
| | 46 | return _error->Errno("fchmod",_("Failed to write file %s"), |
| | 47 | Itm.Name); |
| | 48 | if (fchown(iFd,Itm.UID,Itm.GID) != 0 && errno != EPERM) |
| | 49 | return _error->Errno("fchown",_("Failed to write file %s"), |
| | 50 | Itm.Name); |
| | 51 | Fd = iFd; |
| | 52 | return true; |
| | 53 | } |
| | 54 | |
| | 55 | case Item::HardLink: |
| | 56 | case Item::SymbolicLink: |
| | 57 | case Item::CharDevice: |
| | 58 | case Item::BlockDevice: |
| | 59 | case Item::Directory: |
| | 60 | { |
| | 61 | struct stat Buf; |
| | 62 | // check if the dir is already there, if so return true |
| | 63 | if (stat(Itm.Name,&Buf) == 0) |
| | 64 | { |
| | 65 | if(S_ISDIR(Buf.st_mode)) |
| | 66 | return true; |
| | 67 | // something else is there already, return false |
| | 68 | return false; |
| | 69 | } |
| | 70 | // nothing here, create the dir |
| | 71 | if(mkdir(Itm.Name,Itm.Mode) < 0) |
| | 72 | return false; |
| | 73 | return true; |
| | 74 | break; |
| | 75 | } |
| | 76 | case Item::FIFO: |
| | 77 | break; |
| | 78 | } |
| | 79 | |
| | 80 | return true; |
| | 81 | } |
| | 82 | /*}}}*/ |
| | 83 | // DirStream::FinishedFile - Finished processing a file /*{{{*/ |
| | 84 | // --------------------------------------------------------------------- |
| | 85 | /* */ |
| | 86 | bool pkgDirStream::FinishedFile(Item &Itm,int Fd) |
| | 87 | { |
| | 88 | if (Fd < 0) |
| | 89 | return true; |
| | 90 | |
| | 91 | if (close(Fd) != 0) |
| | 92 | return _error->Errno("close",_("Failed to close file %s"),Itm.Name); |
| | 93 | |
| | 94 | /* Set the modification times. The only way it can fail is if someone |
| | 95 | has futzed with our file, which is intolerable :> */ |
| | 96 | struct utimbuf Time; |
| | 97 | Time.actime = Itm.MTime; |
| | 98 | Time.modtime = Itm.MTime; |
| | 99 | if (utime(Itm.Name,&Time) != 0) |
| | 100 | _error->Errno("utime",_("Failed to close file %s"),Itm.Name); |
| | 101 | |
| | 102 | return true; |
| | 103 | } |
| | 104 | /*}}}*/ |
| | 105 | // DirStream::Fail - Failed processing a file /*{{{*/ |
| | 106 | // --------------------------------------------------------------------- |
| | 107 | /* */ |
| | 108 | bool pkgDirStream::Fail(Item &Itm,int Fd) |
| | 109 | { |
| | 110 | if (Fd < 0) |
| | 111 | return true; |
| | 112 | |
| | 113 | close(Fd); |
| | 114 | return false; |
| | 115 | } |
| | 116 | /*}}}*/ |
projects / apt.git / blame_incremental