X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Finstall.c;h=07e06c425f87eed678711ea8f7d76ebc3a370ed8;hb=d67ca9ab8472ab012ac460555225924f6337e962;hp=edf4d2a9fe979b8dbc4c7e09e05938a6655dea20;hpb=db5c0122853a9ecf1cc92e6593461932df2fa866;p=elogind.git diff --git a/src/shared/install.c b/src/shared/install.c index edf4d2a9f..07e06c425 100644 --- a/src/shared/install.c +++ b/src/shared/install.c @@ -506,7 +506,7 @@ static int find_symlinks_in_scope( UnitFileState *state) { int r; - _cleanup_free_ char *path = NULL; + _cleanup_free_ char *path2 = NULL; bool same_name_link_runtime = false, same_name_link = false; assert(scope >= 0); @@ -514,6 +514,7 @@ static int find_symlinks_in_scope( assert(name); if (scope == UNIT_FILE_SYSTEM || scope == UNIT_FILE_GLOBAL) { + _cleanup_free_ char *path = NULL; /* First look in runtime config path */ r = get_config_path(scope, true, root_dir, &path); @@ -530,11 +531,11 @@ static int find_symlinks_in_scope( } /* Then look in the normal config path */ - r = get_config_path(scope, false, root_dir, &path); + r = get_config_path(scope, false, root_dir, &path2); if (r < 0) return r; - r = find_symlinks(name, path, &same_name_link); + r = find_symlinks(name, path2, &same_name_link); if (r < 0) return r; else if (r > 0) { @@ -1061,8 +1062,8 @@ static int unit_file_search( info->path = path; else { if (r == -ENOENT && unit_name_is_instance(info->name)) { - /* unit file doesn't exist, however instance enablement was request */ - /* we will check if it is possible to load template unit file */ + /* Unit file doesn't exist, however instance enablement was requested. + * We will check if it is possible to load template unit file. */ char *template = NULL, *template_path = NULL, *template_dir = NULL; @@ -1073,7 +1074,7 @@ static int unit_file_search( return -ENOMEM; } - /* we will reuse path variable since we don't need it anymore */ + /* We will reuse path variable since we don't need it anymore. */ template_dir = path; *(strrchr(path, '/') + 1) = '\0'; @@ -1084,7 +1085,7 @@ static int unit_file_search( return -ENOMEM; } - /* let's try to load template unit */ + /* Let's try to load template unit. */ r = unit_file_load(c, info, template_path, allow_symlink); if (r >= 0) { info->path = strdup(template_path); @@ -1413,7 +1414,9 @@ 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); - if (q < 0) { + if (q == -ENOENT) { + /* do nothing */ + } else if (q < 0) { if (r >= 0) r = q; @@ -1422,16 +1425,30 @@ static int install_context_mark_for_removal( r += q; if (unit_name_is_instance(i->name)) { - char *unit_file = NULL; + char *unit_file; + + if (i->path) { + unit_file = path_get_file_name(i->path); + + if (unit_name_is_instance(unit_file)) + /* unit file named as instance exists, thus all symlinks + * pointing to it will be removed */ + q = mark_symlink_for_removal(remove_symlinks_to, i->name); + else + /* does not exist, thus we will mark for removal symlinks + * to template unit file */ + q = mark_symlink_for_removal(remove_symlinks_to, unit_file); + } else { + /* If i->path is not set, it means that we didn't actually find + * the unit file. But we can still remove symlinks to the + * nonexistent template. */ + unit_file = unit_name_template(i->name); + if (!unit_file) + return log_oom(); - unit_file = path_get_file_name(i->path); - - if (unit_name_is_instance(unit_file)) - /* unit file named as instance exists, thus all symlinks pointing to it, will be removed */ - q = mark_symlink_for_removal(remove_symlinks_to, i->name); - else - /* does not exist, thus we will mark for removal symlinks to template unit file */ q = mark_symlink_for_removal(remove_symlinks_to, unit_file); + free(unit_file); + } } else q = mark_symlink_for_removal(remove_symlinks_to, i->name); @@ -1531,43 +1548,101 @@ int unit_file_reenable( bool force, UnitFileChange **changes, unsigned *n_changes) { + int r; + + r = unit_file_disable(scope, runtime, root_dir, files, + changes, n_changes); + if (r < 0) + return r; + + return unit_file_enable(scope, runtime, root_dir, files, force, + changes, n_changes); +} + +int unit_file_set_default( + UnitFileScope scope, + const char *root_dir, + char *file, + UnitFileChange **changes, + unsigned *n_changes) { _cleanup_lookup_paths_free_ LookupPaths paths = {}; _cleanup_install_context_done_ InstallContext c = {}; - char **i; _cleanup_free_ char *config_path = NULL; - _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; - int r, q; + char *path; + int r; + InstallInfo *i = NULL; assert(scope >= 0); assert(scope < _UNIT_FILE_SCOPE_MAX); + if (unit_name_to_type(file) != UNIT_TARGET) + return -EINVAL; + r = lookup_paths_init_from_scope(&paths, scope); if (r < 0) return r; - r = get_config_path(scope, runtime, root_dir, &config_path); + r = get_config_path(scope, false, root_dir, &config_path); if (r < 0) return r; - STRV_FOREACH(i, files) { - r = mark_symlink_for_removal(&remove_symlinks_to, *i); - if (r < 0) - return r; + r = install_info_add_auto(&c, file); + if (r < 0) + return r; - r = install_info_add_auto(&c, *i); - if (r < 0) + i = (InstallInfo*)hashmap_first(c.will_install); + + r = unit_file_search(&c, i, &paths, root_dir, false); + if (r < 0) + return r; + + path = strappenda(config_path, "/default.target"); + r = create_symlink(i->path, path, true, changes, n_changes); + if (r < 0) + return r; + + return 0; +} + +int unit_file_get_default( + UnitFileScope scope, + const char *root_dir, + char **name) { + + _cleanup_lookup_paths_free_ LookupPaths paths = {}; + char **p; + int r; + + r = lookup_paths_init_from_scope(&paths, scope); + if (r < 0) + return r; + + STRV_FOREACH(p, paths.unit_path) { + _cleanup_free_ char *path = NULL, *tmp = NULL; + + if (isempty(root_dir)) + path = strappend(*p, "/default.target"); + else + path = strjoin(root_dir, "/", *p, "/default.target", NULL); + + if (!path) + return -ENOMEM; + + r = readlink_malloc(path, &tmp); + if (r == -ENOENT) + continue; + else if (r < 0) return r; - } - r = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes, files); + *name = strdup(path_get_file_name(tmp)); + if (!*name) + return -ENOMEM; - /* Returns number of symlinks that where supposed to be installed. */ - q = install_context_apply(&c, &paths, config_path, root_dir, force, changes, n_changes); - if (r == 0) - r = q; + return 0; + } - return r; + return -ENOENT; } UnitFileState unit_file_get_state( @@ -1609,24 +1684,29 @@ UnitFileState unit_file_get_state( if (!path) return -ENOMEM; + /* + * Search for a unit file in our default paths, to + * be sure, that there are no broken symlinks. + */ if (lstat(path, &st) < 0) { r = -errno; - if (errno == ENOENT) - continue; - - return -errno; - } + if (errno != ENOENT) + return r; - if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode)) - return -ENOENT; + if (!unit_name_is_instance(name)) + continue; + } else { + if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode)) + return -ENOENT; - r = null_or_empty_path(path); - if (r < 0 && r != -ENOENT) - return r; - else if (r > 0) { - state = path_startswith(*i, "/run") ? - UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; - return state; + r = null_or_empty_path(path); + if (r < 0 && r != -ENOENT) + return r; + else if (r > 0) { + state = path_startswith(*i, "/run") ? + UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; + return state; + } } r = find_symlinks_in_scope(scope, root_dir, name, &state);