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-rw-r--r--src/analyze/analyze-fdstore.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/src/analyze/analyze-fdstore.c b/src/analyze/analyze-fdstore.c
new file mode 100644
index 0000000..13db7f5
--- /dev/null
+++ b/src/analyze/analyze-fdstore.c
@@ -0,0 +1,110 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "analyze-fdstore.h"
+#include "analyze.h"
+#include "bus-error.h"
+#include "bus-locator.h"
+#include "fd-util.h"
+#include "format-table.h"
+
+static int dump_fdstore(sd_bus *bus, const char *arg) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_(table_unrefp) Table *table = NULL;
+ _cleanup_free_ char *unit = NULL;
+ int r;
+
+ assert(bus);
+ assert(arg);
+
+ r = unit_name_mangle_with_suffix(arg, NULL, UNIT_NAME_MANGLE_GLOB, ".service", &unit);
+ if (r < 0)
+ return log_error_errno(r, "Failed to mangle name '%s': %m", arg);
+
+ r = bus_call_method(
+ bus,
+ bus_systemd_mgr,
+ "DumpUnitFileDescriptorStore",
+ &error,
+ &reply,
+ "s", unit);
+ if (r < 0)
+ return log_error_errno(r, "Failed to call DumpUnitFileDescriptorStore: %s",
+ bus_error_message(&error, r));
+
+ r = sd_bus_message_enter_container(reply, 'a', "(suuutuusu)");
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ table = table_new("fdname", "type", "devno", "inode", "rdevno", "path", "flags");
+ if (!table)
+ return log_oom();
+
+ table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
+
+ (void) table_set_align_percent(table, TABLE_HEADER_CELL(3), 100);
+
+ for (;;) {
+ uint32_t mode, major, minor, rmajor, rminor, flags;
+ const char *fdname, *path;
+ uint64_t inode;
+
+ r = sd_bus_message_read(
+ reply,
+ "(suuutuusu)",
+ &fdname,
+ &mode,
+ &major, &minor,
+ &inode,
+ &rmajor, &rminor,
+ &path,
+ &flags);
+ if (r < 0)
+ return bus_log_parse_error(r);
+ if (r == 0)
+ break;
+
+ r = table_add_many(
+ table,
+ TABLE_STRING, fdname,
+ TABLE_MODE_INODE_TYPE, mode,
+ TABLE_DEVNUM, makedev(major, minor),
+ TABLE_UINT64, inode,
+ TABLE_DEVNUM, makedev(rmajor, rminor),
+ TABLE_PATH, path,
+ TABLE_STRING, accmode_to_string(flags));
+ if (r < 0)
+ return table_log_add_error(r);
+ }
+
+ r = sd_bus_message_exit_container(reply);
+ if (r < 0)
+ return r;
+
+ if (FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF) && table_get_rows(table) <= 0)
+ log_info("No file descriptors in fdstore of '%s'.", unit);
+ else {
+ r = table_print_with_pager(table, arg_json_format_flags, arg_pager_flags, /* show_header= */true);
+ if (r < 0)
+ return log_error_errno(r, "Failed to output table: %m");
+ }
+
+ return EXIT_SUCCESS;
+}
+
+int verb_fdstore(int argc, char *argv[], void *userdata) {
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ int r;
+
+ r = acquire_bus(&bus, NULL);
+ if (r < 0)
+ return bus_log_connect_error(r, arg_transport);
+
+ STRV_FOREACH(arg, strv_skip(argv, 1)) {
+ r = dump_fdstore(bus, *arg);
+ if (r < 0)
+ return r;
+ }
+
+ return EXIT_SUCCESS;
+}