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/* 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;
}
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