src/analyze/analyze-malloc.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include "sd-bus.h"
   4
   5 #include "analyze-malloc.h"
   6 #include "analyze.h"
   7 #include "bus-error.h"
   8 #include "bus-internal.h"
   9
  10 static int dump_malloc_info(sd_bus *bus, char *service) {
  11         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
  12         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  13         int r;
  14
  15         assert(bus);
  16         assert(service);
  17
  18         r = sd_bus_call_method(bus,
  19                                service,
  20                                "/org/freedesktop/MemoryAllocation1",
  21                                "org.freedesktop.MemoryAllocation1",
  22                                "GetMallocInfo",
  23                                &error,
  24                                &reply,
  25                                NULL);
  26         if (r < 0)
  27                 return log_error_errno(r, "Failed to call GetMallocInfo on '%s': %s", service, bus_error_message(&error, r));
  28
  29         return dump_fd_reply(reply);
  30 }
  31
  32 int verb_malloc(int argc, char *argv[], void *userdata) {
  33         _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
  34         char **services = STRV_MAKE("org.freedesktop.systemd1");
  35         int r;
  36
  37         if (!strv_isempty(strv_skip(argv, 1))) {
  38                 services = strv_skip(argv, 1);
  39                 STRV_FOREACH(service, services)
  40                         if (!service_name_is_valid(*service))
  41                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "D-Bus service name '%s' is not valid.", *service);
  42         }
  43
  44         r = acquire_bus(&bus, NULL);
  45         if (r < 0)
  46                 return bus_log_connect_error(r, arg_transport);
  47
  48         r = sd_bus_can_send(bus, SD_BUS_TYPE_UNIX_FD);
  49         if (r < 0)
  50                 return log_error_errno(r, "Unable to determine if bus connection supports fd passing: %m");
  51         if (r == 0)
  52                 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "Unable to receive FDs over D-Bus.");
  53
  54         pager_open(arg_pager_flags);
  55
  56         STRV_FOREACH(service, services) {
  57                 r = dump_malloc_info(bus, *service);
  58                 if (r < 0)
  59                         return r;
  60         }
  61
  62         return EXIT_SUCCESS;
  63 }