diff options
| -rw-r--r-- | src/shared/install.c | 150 | ||||
| -rw-r--r-- | src/test/test-install-root.c | 48 |
2 files changed, 172 insertions, 26 deletions
diff --git a/src/shared/install.c b/src/shared/install.c index f02d81504f..cc36da1853 100644 --- a/src/shared/install.c +++ b/src/shared/install.c @@ -66,6 +66,35 @@ typedef struct { OrderedHashmap *have_processed; } InstallContext; +typedef enum { + PRESET_UNKNOWN, + PRESET_ENABLE, + PRESET_DISABLE, +} PresetAction; + +typedef struct { + char *pattern; + PresetAction action; +} PresetRule; + +typedef struct { + PresetRule *rules; + size_t n_rules; +} Presets; + +static inline void presets_freep(Presets *p) { + size_t i; + + if (!p) + return; + + for (i = 0; i < p->n_rules; i++) + free(p->rules[i].pattern); + + free(p->rules); + p->n_rules = 0; +} + static int unit_file_lookup_state(UnitFileScope scope, const LookupPaths *paths, const char *name, UnitFileState *ret); bool unit_type_may_alias(UnitType type) { @@ -2434,17 +2463,16 @@ int unit_file_exists(UnitFileScope scope, const LookupPaths *paths, const char * return 1; } -int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name) { +static int read_presets(UnitFileScope scope, const char *root_dir, Presets *presets) { + _cleanup_(presets_freep) Presets ps = {}; + size_t n_allocated = 0; _cleanup_strv_free_ char **files = NULL; char **p; int r; assert(scope >= 0); assert(scope < _UNIT_FILE_SCOPE_MAX); - assert(name); - - if (!unit_name_is_valid(name, UNIT_NAME_ANY)) - return -EINVAL; + assert(presets); if (scope == UNIT_FILE_SYSTEM) r = conf_files_list(&files, ".preset", root_dir, @@ -2461,8 +2489,11 @@ int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char "/usr/local/lib/systemd/user-preset", "/usr/lib/systemd/user-preset", NULL); - else - return 1; /* Default is "enable" */ + else { + *presets = (Presets){}; + + return 0; + } if (r < 0) return r; @@ -2470,6 +2501,7 @@ int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char STRV_FOREACH(p, files) { _cleanup_fclose_ FILE *f; char line[LINE_MAX]; + int n = 0; f = fopen(*p, "re"); if (!f) { @@ -2480,10 +2512,12 @@ int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char } FOREACH_LINE(line, f, return -errno) { + PresetRule rule = {}; const char *parameter; char *l; l = strstrip(line); + n++; if (isempty(l)) continue; @@ -2492,31 +2526,87 @@ int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char parameter = first_word(l, "enable"); if (parameter) { - if (fnmatch(parameter, name, FNM_NOESCAPE) == 0) { - log_debug("Preset file says enable %s.", name); - return 1; - } + char *pattern; - continue; + pattern = strdup(parameter); + if (!pattern) + return -ENOMEM; + + rule = (PresetRule) { + .pattern = pattern, + .action = PRESET_ENABLE, + }; } parameter = first_word(l, "disable"); if (parameter) { - if (fnmatch(parameter, name, FNM_NOESCAPE) == 0) { - log_debug("Preset file says disable %s.", name); - return 0; - } + char *pattern; + pattern = strdup(parameter); + if (!pattern) + return -ENOMEM; + + rule = (PresetRule) { + .pattern = pattern, + .action = PRESET_DISABLE, + }; + } + + if (rule.action) { + if (!GREEDY_REALLOC(ps.rules, n_allocated, ps.n_rules + 1)) + return -ENOMEM; + + ps.rules[ps.n_rules++] = rule; continue; } - log_debug("Couldn't parse line '%s'", l); + log_syntax(NULL, LOG_WARNING, *p, n, 0, "Couldn't parse line '%s'. Ignoring.", line); } } - /* Default is "enable" */ - log_debug("Preset file doesn't say anything about %s, enabling.", name); - return 1; + *presets = ps; + ps = (Presets){}; + + return 0; +} + +static int query_presets(const char *name, const Presets presets) { + PresetAction action = PRESET_UNKNOWN; + size_t i; + + if (!unit_name_is_valid(name, UNIT_NAME_ANY)) + return -EINVAL; + + for (i = 0; i < presets.n_rules; i++) + if (fnmatch(presets.rules[i].pattern, name, FNM_NOESCAPE) == 0) { + action = presets.rules[i].action; + break; + } + + switch (action) { + case PRESET_UNKNOWN: + log_debug("Preset files don't specify rule for %s. Enabling.", name); + return 1; + case PRESET_ENABLE: + log_debug("Preset files say enable %s.", name); + return 1; + case PRESET_DISABLE: + log_debug("Preset files say disable %s.", name); + return 0; + default: + assert_not_reached("invalid preset action"); + } +} + +int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name) { + _cleanup_(presets_freep) Presets presets = {}; + int r; + + r = read_presets(scope, root_dir, &presets); + if (r < 0) + return r; + + return query_presets(name, presets); } static int execute_preset( @@ -2572,6 +2662,7 @@ static int preset_prepare_one( LookupPaths *paths, UnitFilePresetMode mode, const char *name, + Presets presets, UnitFileChange **changes, unsigned *n_changes) { @@ -2582,7 +2673,7 @@ static int preset_prepare_one( install_info_find(minus, name)) return 0; - r = unit_file_query_preset(scope, paths->root_dir, name); + r = query_presets(name, presets); if (r < 0) return r; @@ -2612,6 +2703,7 @@ int unit_file_preset( _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; _cleanup_lookup_paths_free_ LookupPaths paths = {}; + _cleanup_(presets_freep) Presets presets = {}; const char *config_path; char **i; int r; @@ -2626,11 +2718,12 @@ int unit_file_preset( config_path = runtime ? paths.runtime_config : paths.persistent_config; - STRV_FOREACH(i, files) { - if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) - return -EINVAL; + r = read_presets(scope, root_dir, &presets); + if (r < 0) + return r; - r = preset_prepare_one(scope, &plus, &minus, &paths, mode, *i, changes, n_changes); + STRV_FOREACH(i, files) { + r = preset_prepare_one(scope, &plus, &minus, &paths, mode, *i, presets, changes, n_changes); if (r < 0) return r; } @@ -2649,6 +2742,7 @@ int unit_file_preset_all( _cleanup_(install_context_done) InstallContext plus = {}, minus = {}; _cleanup_lookup_paths_free_ LookupPaths paths = {}; + _cleanup_(presets_freep) Presets presets = {}; const char *config_path = NULL; char **i; int r; @@ -2663,6 +2757,10 @@ int unit_file_preset_all( config_path = runtime ? paths.runtime_config : paths.persistent_config; + r = read_presets(scope, root_dir, &presets); + if (r < 0) + return r; + STRV_FOREACH(i, paths.search_path) { _cleanup_closedir_ DIR *d = NULL; struct dirent *de; @@ -2686,7 +2784,7 @@ int unit_file_preset_all( continue; /* we don't pass changes[] in, because we want to handle errors on our own */ - r = preset_prepare_one(scope, &plus, &minus, &paths, mode, de->d_name, NULL, 0); + r = preset_prepare_one(scope, &plus, &minus, &paths, mode, de->d_name, presets, NULL, 0); if (r == -ERFKILL) r = unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_MASKED, de->d_name, NULL); diff --git a/src/test/test-install-root.c b/src/test/test-install-root.c index 4680b0336d..4b9a74fca4 100644 --- a/src/test/test-install-root.c +++ b/src/test/test-install-root.c @@ -681,6 +681,53 @@ static void test_revert(const char *root) { changes = NULL; n_changes = 0; } +static void test_preset_order(const char *root) { + UnitFileChange *changes = NULL; + unsigned n_changes = 0; + const char *p; + UnitFileState state; + + assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "prefix-1.service", &state) == -ENOENT); + assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "prefix-2.service", &state) == -ENOENT); + + p = strjoina(root, "/usr/lib/systemd/system/prefix-1.service"); + assert_se(write_string_file(p, + "[Install]\n" + "WantedBy=multi-user.target\n", WRITE_STRING_FILE_CREATE) >= 0); + + p = strjoina(root, "/usr/lib/systemd/system/prefix-2.service"); + assert_se(write_string_file(p, + "[Install]\n" + "WantedBy=multi-user.target\n", WRITE_STRING_FILE_CREATE) >= 0); + + p = strjoina(root, "/usr/lib/systemd/system-preset/test.preset"); + assert_se(write_string_file(p, + "enable prefix-1.service\n" + "disable prefix-*.service\n" + "enable prefix-2.service\n", WRITE_STRING_FILE_CREATE) >= 0); + + assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "prefix-1.service", &state) >= 0 && state == UNIT_FILE_DISABLED); + assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "prefix-2.service", &state) >= 0 && state == UNIT_FILE_DISABLED); + + assert_se(unit_file_preset(UNIT_FILE_SYSTEM, false, root, STRV_MAKE("prefix-1.service"), UNIT_FILE_PRESET_FULL, false, &changes, &n_changes) >= 0); + assert_se(n_changes == 1); + assert_se(changes[0].type == UNIT_FILE_SYMLINK); + assert_se(streq(changes[0].source, "/usr/lib/systemd/system/prefix-1.service")); + p = strjoina(root, SYSTEM_CONFIG_UNIT_PATH"/multi-user.target.wants/prefix-1.service"); + assert_se(streq(changes[0].path, p)); + unit_file_changes_free(changes, n_changes); + changes = NULL; n_changes = 0; + + assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "prefix-1.service", &state) >= 0 && state == UNIT_FILE_ENABLED); + assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "prefix-2.service", &state) >= 0 && state == UNIT_FILE_DISABLED); + + assert_se(unit_file_preset(UNIT_FILE_SYSTEM, false, root, STRV_MAKE("prefix-2.service"), UNIT_FILE_PRESET_FULL, false, &changes, &n_changes) >= 0); + assert_se(n_changes == 0); + + assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "prefix-1.service", &state) >= 0 && state == UNIT_FILE_ENABLED); + assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "prefix-2.service", &state) >= 0 && state == UNIT_FILE_DISABLED); +} + int main(int argc, char *argv[]) { char root[] = "/tmp/rootXXXXXX"; const char *p; @@ -709,6 +756,7 @@ int main(int argc, char *argv[]) { test_template_enable(root); test_indirect(root); test_preset_and_list(root); + test_preset_order(root); test_revert(root); assert_se(rm_rf(root, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0); |