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-rw-r--r--src/core/manager-dump.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/src/core/manager-dump.c b/src/core/manager-dump.c
new file mode 100644
index 0000000..5a92356
--- /dev/null
+++ b/src/core/manager-dump.c
@@ -0,0 +1,111 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "build.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "hashmap.h"
+#include "manager-dump.h"
+#include "unit-serialize.h"
+
+void manager_dump_jobs(Manager *s, FILE *f, char **patterns, const char *prefix) {
+ Job *j;
+
+ assert(s);
+ assert(f);
+
+ HASHMAP_FOREACH(j, s->jobs) {
+
+ if (!strv_fnmatch_or_empty(patterns, j->unit->id, FNM_NOESCAPE))
+ continue;
+
+ job_dump(j, f, prefix);
+ }
+}
+
+void manager_dump_units(Manager *s, FILE *f, char **patterns, const char *prefix) {
+ Unit *u;
+ const char *t;
+
+ assert(s);
+ assert(f);
+
+ HASHMAP_FOREACH_KEY(u, t, s->units) {
+ if (u->id != t)
+ continue;
+
+ if (!strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE))
+ continue;
+
+ unit_dump(u, f, prefix);
+ }
+}
+
+static void manager_dump_header(Manager *m, FILE *f, const char *prefix) {
+
+ /* NB: this is a debug interface for developers. It's not supposed to be machine readable or be
+ * stable between versions. We take the liberty to restructure it entirely between versions and
+ * add/remove fields at will. */
+
+ fprintf(f, "%sManager: systemd " STRINGIFY(PROJECT_VERSION) " (" GIT_VERSION ")\n", strempty(prefix));
+ fprintf(f, "%sFeatures: %s\n", strempty(prefix), systemd_features);
+
+ for (ManagerTimestamp q = 0; q < _MANAGER_TIMESTAMP_MAX; q++) {
+ const dual_timestamp *t = m->timestamps + q;
+
+ if (dual_timestamp_is_set(t))
+ fprintf(f, "%sTimestamp %s: %s\n",
+ strempty(prefix),
+ manager_timestamp_to_string(q),
+ timestamp_is_set(t->realtime) ? FORMAT_TIMESTAMP(t->realtime) :
+ FORMAT_TIMESPAN(t->monotonic, 1));
+ }
+}
+
+void manager_dump(Manager *m, FILE *f, char **patterns, const char *prefix) {
+ assert(m);
+ assert(f);
+
+ /* If no pattern is provided, dump the full manager state including the manager version, features and
+ * so on. Otherwise limit the dump to the units/jobs matching the specified patterns. */
+ if (!patterns)
+ manager_dump_header(m, f, prefix);
+
+ manager_dump_units(m, f, patterns, prefix);
+ manager_dump_jobs(m, f, patterns, prefix);
+}
+
+int manager_get_dump_string(Manager *m, char **patterns, char **ret) {
+ _cleanup_free_ char *dump = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ size_t size;
+ int r;
+
+ assert(m);
+ assert(ret);
+
+ f = open_memstream_unlocked(&dump, &size);
+ if (!f)
+ return -errno;
+
+ manager_dump(m, f, patterns, NULL);
+
+ r = fflush_and_check(f);
+ if (r < 0)
+ return r;
+
+ f = safe_fclose(f);
+
+ *ret = TAKE_PTR(dump);
+
+ return 0;
+}
+
+void manager_test_summary(Manager *m) {
+ assert(m);
+
+ printf("-> By units:\n");
+ manager_dump_units(m, stdout, /* patterns= */ NULL, "\t");
+
+ printf("-> By jobs:\n");
+ manager_dump_jobs(m, stdout, /* patterns= */ NULL, "\t");
+}