HCoop / ntk / apt.git / blame
| Commit | Line | Data |
|---|---|---|
| d38b7b3d AL |
1 | // -*- mode: cpp; mode: fold -*- |
| 2 | // Description /*{{{*/ | |
| 2d11135a | 3 | // $Id: dpkginit.cc,v 1.2 1999/04/18 06:36:36 jgg Exp $ |
| d38b7b3d AL |
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) | |
| 2d11135a AL |
57 | return _error->Error("Unable to lock the administration directory, " |
| 58 | "are you root?"); | |
| d38b7b3d AL |
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 | /*}}}*/ |