diff options
Diffstat (limited to 'src/shared/install.c')
| -rw-r--r-- | src/shared/install.c | 102 |
1 files changed, 93 insertions, 9 deletions
diff --git a/src/shared/install.c b/src/shared/install.c index 945bb2748d..ff5dcbac15 100644 --- a/src/shared/install.c +++ b/src/shared/install.c @@ -1042,7 +1042,8 @@ static int unit_file_load( InstallInfo *info, const char *path, const char *root_dir, - bool allow_symlink) { + bool allow_symlink, + bool load) { const ConfigTableItem items[] = { { "Install", "Alias", config_parse_strv, 0, &info->aliases }, @@ -1064,6 +1065,11 @@ static int unit_file_load( if (!isempty(root_dir)) path = strappenda(root_dir, "/", path); + if (!load) { + r = access(path, F_OK) ? -errno : 0; + return r; + } + fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|(allow_symlink ? 0 : O_NOFOLLOW)); if (fd < 0) return -errno; @@ -1092,7 +1098,8 @@ static int unit_file_search( InstallInfo *info, LookupPaths *paths, const char *root_dir, - bool allow_symlink) { + bool allow_symlink, + bool load) { char **p; int r; @@ -1102,7 +1109,7 @@ static int unit_file_search( assert(paths); if (info->path) - return unit_file_load(c, info, info->path, root_dir, allow_symlink); + return unit_file_load(c, info, info->path, root_dir, allow_symlink, load); assert(info->name); @@ -1113,7 +1120,7 @@ static int unit_file_search( if (!path) return -ENOMEM; - r = unit_file_load(c, info, path, root_dir, allow_symlink); + r = unit_file_load(c, info, path, root_dir, allow_symlink, load); if (r >= 0) { info->path = path; path = NULL; @@ -1142,7 +1149,7 @@ static int unit_file_search( if (!path) return -ENOMEM; - r = unit_file_load(c, info, path, root_dir, allow_symlink); + r = unit_file_load(c, info, path, root_dir, allow_symlink, load); if (r >= 0) { info->path = path; path = NULL; @@ -1175,7 +1182,7 @@ static int unit_file_can_install( assert_se(i = hashmap_first(c.will_install)); - r = unit_file_search(&c, i, paths, root_dir, allow_symlink); + r = unit_file_search(&c, i, paths, root_dir, allow_symlink, true); if (r >= 0) r = @@ -1402,7 +1409,7 @@ static int install_context_apply( assert_se(hashmap_move_one(c->have_installed, c->will_install, i->name) == 0); - q = unit_file_search(c, i, paths, root_dir, false); + q = unit_file_search(c, i, paths, root_dir, false, true); if (q < 0) { if (r >= 0) r = q; @@ -1443,7 +1450,7 @@ static int install_context_mark_for_removal( assert_se(hashmap_move_one(c->have_installed, c->will_install, i->name) == 0); - q = unit_file_search(c, i, paths, root_dir, false); + q = unit_file_search(c, i, paths, root_dir, false, true); if (q == -ENOENT) { /* do nothing */ } else if (q < 0) { @@ -1489,6 +1496,83 @@ static int install_context_mark_for_removal( return r; } +int unit_file_add_dependency( + UnitFileScope scope, + bool runtime, + const char *root_dir, + char **files, + char *target, + UnitDependency dep, + bool force, + UnitFileChange **changes, + unsigned *n_changes) { + + _cleanup_lookup_paths_free_ LookupPaths paths = {}; + _cleanup_(install_context_done) InstallContext c = {}; + _cleanup_free_ char *config_path = NULL; + char **i; + int r; + InstallInfo *info; + + assert(scope >= 0); + assert(scope < _UNIT_FILE_SCOPE_MAX); + + r = lookup_paths_init_from_scope(&paths, scope, root_dir); + if (r < 0) + return r; + + r = get_config_path(scope, runtime, root_dir, &config_path); + if (r < 0) + return r; + + STRV_FOREACH(i, files) { + UnitFileState state; + + state = unit_file_get_state(scope, root_dir, *i); + if (state < 0) { + log_error("Failed to get unit file state for %s: %s", *i, strerror(-state)); + return state; + } + + if (state == UNIT_FILE_MASKED || state == UNIT_FILE_MASKED_RUNTIME) { + log_error("Failed to enable unit: Unit %s is masked", *i); + return -ENOTSUP; + } + + r = install_info_add_auto(&c, *i); + if (r < 0) + return r; + } + + while ((info = hashmap_first(c.will_install))) { + r = hashmap_ensure_allocated(&c.have_installed, &string_hash_ops); + if (r < 0) + return r; + + assert_se(hashmap_move_one(c.have_installed, c.will_install, info->name) == 0); + + r = unit_file_search(&c, info, &paths, root_dir, false, false); + if (r < 0) + return r; + + if (dep == UNIT_WANTS) + r = strv_extend(&info->wanted_by, target); + else if (dep == UNIT_REQUIRES) + r = strv_extend(&info->required_by, target); + else + r = -EINVAL; + + if (r < 0) + return r; + + r = install_info_apply(info, &paths, config_path, root_dir, force, changes, n_changes); + if (r < 0) + return r; + } + + return 0; +} + int unit_file_enable( UnitFileScope scope, bool runtime, @@ -1638,7 +1722,7 @@ int unit_file_set_default( assert_se(i = hashmap_first(c.will_install)); - r = unit_file_search(&c, i, &paths, root_dir, false); + r = unit_file_search(&c, i, &paths, root_dir, false, true); if (r < 0) return r; |