| | 1 | // -*- mode: cpp; mode: fold -*- |
| | 2 | // Description /*{{{*/ |
| | 3 | // $Id: dpkginit.cc,v 1.2 1999/04/18 06:36:36 jgg Exp $ |
| | 4 | /* ###################################################################### |
| | 5 | |
| | 6 | DPKG init - Initialize the dpkg stuff |
| | 7 | |
| | 8 | ##################################################################### */ |
| | 9 | /*}}}*/ |
| | 10 | // Includes /*{{{*/ |
| | 11 | #ifdef __GNUG__ |
| | 12 | #pragma implementation "apt-pkg/dpkginit.h" |
| | 13 | #endif |
| | 14 | #include <apt-pkg/dpkginit.h> |
| | 15 | #include <apt-pkg/error.h> |
| | 16 | #include <apt-pkg/configuration.h> |
| | 17 | #include <apt-pkg/fileutl.h> |
| | 18 | |
| | 19 | #include <sys/types.h> |
| | 20 | #include <unistd.h> |
| | 21 | #include <dirent.h> |
| | 22 | /*}}}*/ |
| | 23 | |
| | 24 | // DpkgLock::pkgDpkgLock - Constructor /*{{{*/ |
| | 25 | // --------------------------------------------------------------------- |
| | 26 | /* */ |
| | 27 | pkgDpkgLock::pkgDpkgLock() |
| | 28 | { |
| | 29 | LockFD = -1; |
| | 30 | GetLock(); |
| | 31 | } |
| | 32 | /*}}}*/ |
| | 33 | // DpkgLock::~pkgDpkgLock - Destructor /*{{{*/ |
| | 34 | // --------------------------------------------------------------------- |
| | 35 | /* */ |
| | 36 | pkgDpkgLock::~pkgDpkgLock() |
| | 37 | { |
| | 38 | Close(); |
| | 39 | } |
| | 40 | /*}}}*/ |
| | 41 | // DpkgLock::GetLock - Get the lock /*{{{*/ |
| | 42 | // --------------------------------------------------------------------- |
| | 43 | /* This mirrors the operations dpkg does when it starts up. Note the |
| | 44 | checking of the updates directory. */ |
| | 45 | bool pkgDpkgLock::GetLock() |
| | 46 | { |
| | 47 | // Disable file locking |
| | 48 | if (_config->FindB("Debug::NoLocking",false) == true) |
| | 49 | return true; |
| | 50 | |
| | 51 | Close(); |
| | 52 | |
| | 53 | // Create the lockfile |
| | 54 | string AdminDir = flNotFile(_config->Find("Dir::State::status")); |
| | 55 | LockFD = ::GetLock(AdminDir + "lock"); |
| | 56 | if (LockFD == -1) |
| | 57 | return _error->Error("Unable to lock the administration directory, " |
| | 58 | "are you root?"); |
| | 59 | |
| | 60 | // Check for updates.. (dirty) |
| | 61 | string File = AdminDir + "updates/"; |
| | 62 | DIR *DirP = opendir(File.c_str()); |
| | 63 | if (DirP != 0) |
| | 64 | { |
| | 65 | /* We ignore any files that are not all digits, this skips .,.. and |
| | 66 | some tmp files dpkg will leave behind.. */ |
| | 67 | bool Damaged = false; |
| | 68 | for (struct dirent *Ent = readdir(DirP); Ent != 0; Ent = readdir(DirP)) |
| | 69 | { |
| | 70 | Damaged = true; |
| | 71 | for (unsigned int I = 0; Ent->d_name[I] != 0; I++) |
| | 72 | { |
| | 73 | // Check if its not a digit.. |
| | 74 | if (isdigit(Ent->d_name[I]) == 0) |
| | 75 | { |
| | 76 | Damaged = false; |
| | 77 | break; |
| | 78 | } |
| | 79 | } |
| | 80 | if (Damaged == true) |
| | 81 | break; |
| | 82 | } |
| | 83 | closedir(DirP); |
| | 84 | |
| | 85 | // Woops, we have to run dpkg to rewrite the status file |
| | 86 | if (Damaged == true) |
| | 87 | { |
| | 88 | Close(); |
| | 89 | return _error->Error("dpkg was interrupted, you must manually " |
| | 90 | "run 'dpkg --configure -a' to correct the problem. "); |
| | 91 | } |
| | 92 | } |
| | 93 | |
| | 94 | return true; |
| | 95 | } |
| | 96 | /*}}}*/ |
| | 97 | // DpkgLock::Close - Close the lock /*{{{*/ |
| | 98 | // --------------------------------------------------------------------- |
| | 99 | /* */ |
| | 100 | void pkgDpkgLock::Close() |
| | 101 | { |
| | 102 | close(LockFD); |
| | 103 | LockFD = -1; |
| | 104 | } |
| | 105 | /*}}}*/ |
projects / apt.git / blame_incremental