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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "format-util.h"
#include "parse-util.h"
#include "systemctl.h"
#include "systemctl-util.h"
#include "systemctl-whoami.h"
int verb_whoami(int argc, char *argv[], void *userdata) {
sd_bus *bus;
int r, ret = 0;
r = acquire_bus(BUS_FULL, &bus);
if (r < 0)
return r;
if (argc <= 1) {
_cleanup_free_ char *unit = NULL;
if (arg_transport != BUS_TRANSPORT_LOCAL)
return log_error_errno(SYNTHETIC_ERRNO(EREMOTE),
"Refusing to look up our local PID on remote host.");
/* Our own process can never go away while querying, hence no need to go through pidfd. */
r = get_unit_by_pid(bus, 0, &unit, /* ret_path = */ NULL);
if (r < 0)
return r;
puts(unit);
return 0;
}
STRV_FOREACH(pidstr, strv_skip(argv, 1)) {
_cleanup_free_ char *unit = NULL;
pid_t pid;
r = parse_pid(*pidstr, &pid);
if (r < 0)
return log_error_errno(r, "Invalid PID specified: %s", *pidstr);
r = lookup_unit_by_pidref(bus, pid, &unit, /* ret_path = */ NULL);
if (r < 0)
RET_GATHER(ret, r);
else
puts(unit);
}
return ret;
}
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