+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <dirent.h>
#include <string.h>
#include "alloc-util.h"
+#include "bus-error.h"
+#include "bus-util.h"
#include "cgroup-show.h"
#include "cgroup-util.h"
#include "fd-util.h"
-#include "formats-util.h"
+#include "fileio.h"
+#include "format-util.h"
#include "locale-util.h"
#include "macro.h"
#include "output-mode.h"
#include "process-util.h"
#include "string-util.h"
#include "terminal-util.h"
+#include "unit-name.h"
static void show_pid_array(
pid_t pids[],
for (i = 0; i < n_pids; i++) {
_cleanup_free_ char *t = NULL;
- get_process_cmdline(pids[i], n_columns, true, &t);
+ (void) get_process_cmdline(pids[i], n_columns, true, &t);
if (extra)
- printf("%s%s ", prefix, draw_special_char(DRAW_TRIANGULAR_BULLET));
+ printf("%s%s ", prefix, special_glyph(TRIANGULAR_BULLET));
else
- printf("%s%s", prefix, draw_special_char(((more || i < n_pids-1) ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT)));
+ printf("%s%s", prefix, special_glyph(((more || i < n_pids-1) ? TREE_BRANCH : TREE_RIGHT)));
printf("%*"PID_PRI" %s\n", pid_width, pids[i], strna(t));
}
while ((r = cg_read_subgroup(d, &gn)) > 0) {
_cleanup_free_ char *k = NULL;
- k = strjoin(fn, "/", gn, NULL);
+ k = strjoin(fn, "/", gn);
free(gn);
if (!k)
return -ENOMEM;
}
if (last) {
- printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_BRANCH), cg_unescape(basename(last)));
+ printf("%s%s%s\n", prefix, special_glyph(TREE_BRANCH), cg_unescape(basename(last)));
if (!p1) {
- p1 = strappend(prefix, draw_special_char(DRAW_TREE_VERTICAL));
+ p1 = strappend(prefix, special_glyph(TREE_VERTICAL));
if (!p1)
return -ENOMEM;
}
free(last);
}
- last = k;
- k = NULL;
+ last = TAKE_PTR(k);
}
if (r < 0)
show_cgroup_one_by_path(path, prefix, n_columns, !!last, flags);
if (last) {
- printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_RIGHT), cg_unescape(basename(last)));
+ printf("%s%s%s\n", prefix, special_glyph(TREE_RIGHT), cg_unescape(basename(last)));
if (!p2) {
p2 = strappend(prefix, " ");
return show_cgroup_and_extra(controller, path, prefix, n_columns, extra_pids, n_extra_pids, flags);
}
+
+int show_cgroup_get_unit_path_and_warn(
+ sd_bus *bus,
+ const char *unit,
+ char **ret) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_free_ char *path = NULL;
+ int r;
+
+ path = unit_dbus_path_from_name(unit);
+ if (!path)
+ return log_oom();
+
+ r = sd_bus_get_property_string(
+ bus,
+ "org.freedesktop.systemd1",
+ path,
+ unit_dbus_interface_from_name(unit),
+ "ControlGroup",
+ &error,
+ ret);
+ if (r < 0)
+ return log_error_errno(r, "Failed to query unit control group path: %s",
+ bus_error_message(&error, r));
+
+ return 0;
+}
+
+int show_cgroup_get_path_and_warn(
+ const char *machine,
+ const char *prefix,
+ char **ret) {
+
+ int r;
+ _cleanup_free_ char *root = NULL;
+
+ if (machine) {
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ _cleanup_free_ char *unit = NULL;
+ const char *m;
+
+ m = strjoina("/run/systemd/machines/", machine);
+ r = parse_env_file(m, NEWLINE, "SCOPE", &unit, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to load machine data: %m");
+
+ r = bus_connect_transport_systemd(BUS_TRANSPORT_LOCAL, NULL, false, &bus);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create bus connection: %m");
+
+ r = show_cgroup_get_unit_path_and_warn(bus, unit, &root);
+ if (r < 0)
+ return r;
+ } else {
+ r = cg_get_root_path(&root);
+ if (r == -ENOMEDIUM)
+ return log_error_errno(r, "Failed to get root control group path.\n"
+ "No cgroup filesystem mounted on /sys/fs/cgroup");
+ else if (r < 0)
+ return log_error_errno(r, "Failed to get root control group path: %m");
+ }
+
+ if (prefix) {
+ char *t;
+
+ t = strjoin(root, prefix);
+ if (!t)
+ return log_oom();
+
+ *ret = t;
+ } else
+ *ret = TAKE_PTR(root);
+
+ return 0;
+}