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Diffstat (limited to 'src/shared/install.c')
-rw-r--r--src/shared/install.c150
1 files changed, 124 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);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-08 03:52:44 +0000