~mdw / dpkg / blame
| Commit | Line | Data |
|---|---|---|
| 1479465f GJ |
1 | /* |
| 2 | * libdpkg - Debian packaging suite library routines | |
| 3 | * dbdir.c - on-disk database directory functions | |
| 4 | * | |
| 5 | * Copyright © 2011 Guillem Jover <guillem@debian.org> | |
| 6 | * | |
| 7 | * This is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License as published by | |
| 9 | * the Free Software Foundation; either version 2 of the License, or | |
| 10 | * (at your option) any later version. | |
| 11 | * | |
| 12 | * This is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | * GNU General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License | |
| 18 | * along with this program. If not, see <https://www.gnu.org/licenses/>. | |
| 19 | */ | |
| 20 | ||
| 21 | #include <config.h> | |
| 22 | #include <compat.h> | |
| 23 | ||
| 24 | #include <sys/types.h> | |
| 25 | ||
| 26 | #include <stdlib.h> | |
| 27 | ||
| 28 | #include <dpkg/dpkg.h> | |
| 29 | #include <dpkg/dpkg-db.h> | |
| 30 | ||
| 31 | static const char *db_dir = ADMINDIR; | |
| 32 | ||
| 33 | /** | |
| 34 | * Set current on-disk database directory. | |
| 35 | * | |
| 36 | * The directory is initially set to ADMINDIR, this function can be used to | |
| 37 | * set the directory to a new value, or to set it to a default value if dir | |
| 38 | * is NULL. For the latter the order is, value from environment variable | |
| 39 | * DPKG_ADMINDIR, and then the built-in default ADMINDIR, | |
| 40 | * | |
| 41 | * @param dir The new database directory, or NULL to set to default. | |
| 42 | * | |
| 43 | * @return The new database directory. | |
| 44 | */ | |
| 45 | const char * | |
| 46 | dpkg_db_set_dir(const char *dir) | |
| 47 | { | |
| 48 | if (dir == NULL) { | |
| 49 | const char *env; | |
| 50 | ||
| 51 | env = getenv("DPKG_ADMINDIR"); | |
| 52 | if (env) | |
| 53 | db_dir = env; | |
| 54 | else | |
| 55 | db_dir = ADMINDIR; | |
| 56 | } else { | |
| 57 | db_dir = dir; | |
| 58 | } | |
| 59 | ||
| 60 | return db_dir; | |
| 61 | } | |
| 62 | ||
| 63 | /** | |
| 64 | * Get current on-disk database directory. | |
| 65 | * | |
| 66 | * @return The current database directory. | |
| 67 | */ | |
| 68 | const char * | |
| 69 | dpkg_db_get_dir(void) | |
| 70 | { | |
| 71 | return db_dir; | |
| 72 | } | |
| 73 | ||
| 74 | /** | |
| 75 | * Get a pathname to the current on-disk database directory. | |
| 76 | * | |
| 77 | * This function returns an allocated string, which should be freed with | |
| 78 | * free(2). | |
| 79 | * | |
| 80 | * @param pathpart The pathpart to append to the new pathname. | |
| 81 | * | |
| 82 | * @return The newly allocated pathname. | |
| 83 | */ | |
| 84 | char * | |
| 85 | dpkg_db_get_path(const char *pathpart) | |
| 86 | { | |
| 87 | return str_fmt("%s/%s", db_dir, pathpart); | |
| 88 | } |