2020-11-09 05:23:58 +01:00
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
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2010-07-08 06:08:32 +02:00
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2010-07-08 21:01:42 +02:00
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#include <dirent.h>
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#include <errno.h>
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2015-12-03 21:13:37 +01:00
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#include <stddef.h>
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2015-10-24 22:58:24 +02:00
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#include <stdio.h>
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2015-12-03 21:13:37 +01:00
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#include <stdlib.h>
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2010-07-08 06:08:32 +02:00
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2015-10-27 03:01:06 +01:00
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#include "alloc-util.h"
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2017-02-01 19:25:27 +01:00
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#include "bus-error.h"
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#include "bus-util.h"
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2015-10-25 13:14:12 +01:00
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#include "cgroup-show.h"
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2015-10-24 22:58:24 +02:00
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#include "cgroup-util.h"
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2018-11-30 22:08:41 +01:00
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#include "env-file.h"
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2015-10-25 13:14:12 +01:00
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#include "fd-util.h"
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2016-11-07 16:14:59 +01:00
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#include "format-util.h"
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2015-10-26 23:01:30 +01:00
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#include "locale-util.h"
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2010-07-08 06:08:32 +02:00
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#include "macro.h"
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2015-12-03 21:13:37 +01:00
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#include "output-mode.h"
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2019-11-20 17:43:09 +01:00
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#include "parse-util.h"
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2012-05-07 21:36:12 +02:00
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#include "path-util.h"
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2015-10-24 22:58:24 +02:00
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#include "process-util.h"
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2019-03-13 12:14:47 +01:00
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#include "sort-util.h"
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2015-10-24 22:58:24 +02:00
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#include "string-util.h"
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2015-04-10 23:15:59 +02:00
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#include "terminal-util.h"
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2017-02-01 19:25:27 +01:00
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#include "unit-name.h"
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2019-11-20 17:43:09 +01:00
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#include "xattr-util.h"
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2010-07-08 06:08:32 +02:00
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2016-04-20 16:06:58 +02:00
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static void show_pid_array(
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pid_t pids[],
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unsigned n_pids,
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const char *prefix,
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Rework cmdline printing to use unicode
The functions to retrieve and print process cmdlines were based on the
assumption that they contain printable ASCII, and everything else
should be filtered out. That assumption doesn't hold in today's world,
where people are free to use unicode everywhere.
This replaces the custom cmdline reading code with a more generic approach
using utf8_escape_non_printable_full().
For kernel threads, truncation is done on the parenthesized name, so we'll
get "[worker]", "[worker…]", …, "[w…]", "[…", "…" as we reduce the number of
available columns.
This implementation is most likely slower for very long cmdlines, but I don't
think this is very important. The common case is to have short commandlines,
and should print those properly. Absurdly long cmdlines are the exception,
which needs to be handled correctly and safely, but speed is not too important.
Fixes #12532.
v2:
- use size_t for the number of columns. This change propagates into various
other functions that call get_process_cmdline(), increasing the size of the
patch, but the changes are rather trivial.
2019-05-15 11:20:26 +02:00
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size_t n_columns,
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2016-04-20 16:06:58 +02:00
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bool extra,
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bool more,
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OutputFlags flags) {
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2015-01-21 05:09:58 +01:00
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unsigned i, j, pid_width;
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2012-04-16 18:56:18 +02:00
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2015-01-23 02:03:58 +01:00
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if (n_pids == 0)
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2015-01-22 18:54:48 +01:00
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return;
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2018-09-18 01:39:24 +02:00
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typesafe_qsort(pids, n_pids, pid_compare_func);
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2012-04-16 18:56:18 +02:00
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2015-01-21 05:09:58 +01:00
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/* Filter duplicates */
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for (j = 0, i = 1; i < n_pids; i++) {
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if (pids[i] == pids[j])
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continue;
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pids[++j] = pids[i];
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2012-04-16 18:56:18 +02:00
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}
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2015-01-21 05:09:58 +01:00
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n_pids = j + 1;
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pid_width = DECIMAL_STR_WIDTH(pids[j]);
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2012-04-16 18:56:18 +02:00
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2013-10-12 18:15:49 +02:00
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if (flags & OUTPUT_FULL_WIDTH)
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Rework cmdline printing to use unicode
The functions to retrieve and print process cmdlines were based on the
assumption that they contain printable ASCII, and everything else
should be filtered out. That assumption doesn't hold in today's world,
where people are free to use unicode everywhere.
This replaces the custom cmdline reading code with a more generic approach
using utf8_escape_non_printable_full().
For kernel threads, truncation is done on the parenthesized name, so we'll
get "[worker]", "[worker…]", …, "[w…]", "[…", "…" as we reduce the number of
available columns.
This implementation is most likely slower for very long cmdlines, but I don't
think this is very important. The common case is to have short commandlines,
and should print those properly. Absurdly long cmdlines are the exception,
which needs to be handled correctly and safely, but speed is not too important.
Fixes #12532.
v2:
- use size_t for the number of columns. This change propagates into various
other functions that call get_process_cmdline(), increasing the size of the
patch, but the changes are rather trivial.
2019-05-15 11:20:26 +02:00
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n_columns = SIZE_MAX;
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2013-01-14 18:16:50 +01:00
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else {
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2019-05-14 00:05:32 +02:00
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if (n_columns > pid_width + 3) /* something like "├─1114784 " */
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n_columns -= pid_width + 3;
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2013-01-14 18:16:50 +01:00
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else
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n_columns = 20;
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}
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2012-04-16 18:56:18 +02:00
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for (i = 0; i < n_pids; i++) {
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2013-10-12 18:15:49 +02:00
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_cleanup_free_ char *t = NULL;
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2012-04-16 18:56:18 +02:00
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2019-05-16 17:44:57 +02:00
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(void) get_process_cmdline(pids[i], n_columns,
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PROCESS_CMDLINE_COMM_FALLBACK | PROCESS_CMDLINE_USE_LOCALE,
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&t);
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2012-04-16 18:56:18 +02:00
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2014-04-23 19:05:46 +02:00
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if (extra)
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2018-12-13 22:11:32 +01:00
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printf("%s%s ", prefix, special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET));
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2014-04-23 19:05:46 +02:00
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else
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2018-12-13 22:11:32 +01:00
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printf("%s%s", prefix, special_glyph(((more || i < n_pids-1) ? SPECIAL_GLYPH_TREE_BRANCH : SPECIAL_GLYPH_TREE_RIGHT)));
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2014-04-23 19:05:46 +02:00
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2019-11-20 17:44:54 +01:00
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printf("%s%*"PID_PRI" %s%s\n", ansi_grey(), pid_width, pids[i], strna(t), ansi_normal());
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2012-04-16 18:56:18 +02:00
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}
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}
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2016-04-20 15:28:28 +02:00
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static int show_cgroup_one_by_path(
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const char *path,
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const char *prefix,
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Rework cmdline printing to use unicode
The functions to retrieve and print process cmdlines were based on the
assumption that they contain printable ASCII, and everything else
should be filtered out. That assumption doesn't hold in today's world,
where people are free to use unicode everywhere.
This replaces the custom cmdline reading code with a more generic approach
using utf8_escape_non_printable_full().
For kernel threads, truncation is done on the parenthesized name, so we'll
get "[worker]", "[worker…]", …, "[w…]", "[…", "…" as we reduce the number of
available columns.
This implementation is most likely slower for very long cmdlines, but I don't
think this is very important. The common case is to have short commandlines,
and should print those properly. Absurdly long cmdlines are the exception,
which needs to be handled correctly and safely, but speed is not too important.
Fixes #12532.
v2:
- use size_t for the number of columns. This change propagates into various
other functions that call get_process_cmdline(), increasing the size of the
patch, but the changes are rather trivial.
2019-05-15 11:20:26 +02:00
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size_t n_columns,
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2016-04-20 15:28:28 +02:00
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bool more,
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OutputFlags flags) {
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2012-04-16 18:56:18 +02:00
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2010-07-08 06:08:32 +02:00
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char *fn;
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2013-04-16 04:36:06 +02:00
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_cleanup_fclose_ FILE *f = NULL;
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2010-07-08 06:08:32 +02:00
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size_t n = 0, n_allocated = 0;
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2013-04-16 04:36:06 +02:00
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_cleanup_free_ pid_t *pids = NULL;
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2013-10-12 18:15:49 +02:00
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_cleanup_free_ char *p = NULL;
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2012-04-16 18:56:18 +02:00
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pid_t pid;
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2010-07-08 21:01:42 +02:00
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int r;
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2010-07-08 06:08:32 +02:00
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2013-04-16 04:36:06 +02:00
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r = cg_mangle_path(path, &p);
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2012-04-16 18:56:18 +02:00
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if (r < 0)
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2010-07-12 18:16:44 +02:00
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return r;
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2010-07-08 06:08:32 +02:00
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2015-02-03 02:05:59 +01:00
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fn = strjoina(p, "/cgroup.procs");
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2010-07-08 21:01:42 +02:00
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f = fopen(fn, "re");
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2010-07-08 06:08:32 +02:00
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if (!f)
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2010-07-08 21:01:42 +02:00
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return -errno;
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2010-07-08 06:08:32 +02:00
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2010-07-11 00:50:49 +02:00
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while ((r = cg_read_pid(f, &pid)) > 0) {
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2010-07-08 06:08:32 +02:00
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2016-04-20 16:06:58 +02:00
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if (!(flags & OUTPUT_KERNEL_THREADS) && is_kernel_thread(pid) > 0)
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2012-01-22 18:18:51 +01:00
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continue;
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2015-01-21 05:09:58 +01:00
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if (!GREEDY_REALLOC(pids, n_allocated, n + 1))
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return -ENOMEM;
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2010-07-08 06:08:32 +02:00
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assert(n < n_allocated);
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2010-07-11 00:50:49 +02:00
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pids[n++] = pid;
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2010-07-08 06:08:32 +02:00
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}
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2010-07-11 00:50:49 +02:00
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if (r < 0)
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2013-04-16 04:36:06 +02:00
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return r;
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2010-07-11 00:50:49 +02:00
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2016-04-20 16:06:58 +02:00
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show_pid_array(pids, n, prefix, n_columns, false, more, flags);
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2010-07-08 06:08:32 +02:00
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2013-04-16 04:36:06 +02:00
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return 0;
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2010-07-08 21:01:42 +02:00
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}
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2019-11-20 17:43:09 +01:00
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static int show_cgroup_name(
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const char *path,
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const char *prefix,
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const char *glyph) {
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_cleanup_free_ char *b = NULL;
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bool delegate = false;
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int r;
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r = getxattr_malloc(path, "trusted.delegate", &b, false);
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if (r < 0) {
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if (r != -ENODATA)
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log_debug_errno(r, "Failed to read trusted.delegate extended attribute: %m");
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} else {
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r = parse_boolean(b);
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if (r < 0)
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log_debug_errno(r, "Failed to parse trusted.delegate extended attribute boolean value: %m");
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else
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delegate = r > 0;
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b = mfree(b);
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}
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b = strdup(basename(path));
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if (!b)
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return -ENOMEM;
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printf("%s%s%s%s%s %s%s%s\n",
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prefix, glyph,
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delegate ? ansi_underline() : "",
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cg_unescape(b),
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delegate ? ansi_normal() : "",
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delegate ? ansi_highlight() : "",
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delegate ? special_glyph(SPECIAL_GLYPH_ELLIPSIS) : "",
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delegate ? ansi_normal() : "");
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return 0;
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}
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2016-04-20 15:28:28 +02:00
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int show_cgroup_by_path(
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const char *path,
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const char *prefix,
|
Rework cmdline printing to use unicode
The functions to retrieve and print process cmdlines were based on the
assumption that they contain printable ASCII, and everything else
should be filtered out. That assumption doesn't hold in today's world,
where people are free to use unicode everywhere.
This replaces the custom cmdline reading code with a more generic approach
using utf8_escape_non_printable_full().
For kernel threads, truncation is done on the parenthesized name, so we'll
get "[worker]", "[worker…]", …, "[w…]", "[…", "…" as we reduce the number of
available columns.
This implementation is most likely slower for very long cmdlines, but I don't
think this is very important. The common case is to have short commandlines,
and should print those properly. Absurdly long cmdlines are the exception,
which needs to be handled correctly and safely, but speed is not too important.
Fixes #12532.
v2:
- use size_t for the number of columns. This change propagates into various
other functions that call get_process_cmdline(), increasing the size of the
patch, but the changes are rather trivial.
2019-05-15 11:20:26 +02:00
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size_t n_columns,
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2016-04-20 15:28:28 +02:00
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OutputFlags flags) {
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2013-04-16 04:36:06 +02:00
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_cleanup_free_ char *fn = NULL, *p1 = NULL, *last = NULL, *p2 = NULL;
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_cleanup_closedir_ DIR *d = NULL;
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2010-07-08 21:01:42 +02:00
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bool shown_pids = false;
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2019-11-20 17:43:09 +01:00
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char *gn = NULL;
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2010-07-08 21:01:42 +02:00
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int r;
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2012-04-16 18:56:18 +02:00
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assert(path);
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2010-07-08 21:01:42 +02:00
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if (n_columns <= 0)
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n_columns = columns();
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2016-04-20 15:28:28 +02:00
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prefix = strempty(prefix);
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2010-07-08 21:01:42 +02:00
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2013-04-16 04:36:06 +02:00
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r = cg_mangle_path(path, &fn);
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2012-04-16 17:35:58 +02:00
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if (r < 0)
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2010-07-12 18:16:44 +02:00
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return r;
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2010-07-08 21:01:42 +02:00
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2012-04-16 17:35:58 +02:00
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d = opendir(fn);
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2013-04-16 04:36:06 +02:00
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if (!d)
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2010-07-08 21:01:42 +02:00
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return -errno;
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2010-07-12 18:16:44 +02:00
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while ((r = cg_read_subgroup(d, &gn)) > 0) {
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2013-04-16 04:36:06 +02:00
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_cleanup_free_ char *k = NULL;
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2012-04-16 17:35:58 +02:00
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2019-06-20 20:07:01 +02:00
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k = path_join(fn, gn);
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2012-04-16 17:35:58 +02:00
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free(gn);
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2013-04-16 04:36:06 +02:00
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if (!k)
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return -ENOMEM;
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2012-04-16 17:35:58 +02:00
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2015-09-01 18:32:07 +02:00
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if (!(flags & OUTPUT_SHOW_ALL) && cg_is_empty_recursive(NULL, k) > 0)
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2012-04-16 17:35:58 +02:00
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continue;
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2010-07-08 21:01:42 +02:00
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if (!shown_pids) {
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2016-04-20 16:06:58 +02:00
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show_cgroup_one_by_path(path, prefix, n_columns, true, flags);
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2010-07-08 21:01:42 +02:00
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shown_pids = true;
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}
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if (last) {
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2019-11-20 17:43:09 +01:00
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r = show_cgroup_name(last, prefix, special_glyph(SPECIAL_GLYPH_TREE_BRANCH));
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if (r < 0)
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return r;
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2010-07-08 21:01:42 +02:00
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2012-04-16 17:35:58 +02:00
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if (!p1) {
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2019-07-11 19:14:16 +02:00
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p1 = strjoin(prefix, special_glyph(SPECIAL_GLYPH_TREE_VERTICAL));
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2013-04-16 04:36:06 +02:00
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if (!p1)
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return -ENOMEM;
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2012-04-16 17:35:58 +02:00
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}
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2010-07-08 21:01:42 +02:00
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2016-04-20 16:06:58 +02:00
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show_cgroup_by_path(last, p1, n_columns-2, flags);
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2010-07-08 21:01:42 +02:00
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free(last);
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}
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2018-03-22 16:53:26 +01:00
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last = TAKE_PTR(k);
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2010-07-08 21:01:42 +02:00
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}
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2010-07-12 18:16:44 +02:00
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if (r < 0)
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2013-04-16 04:36:06 +02:00
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return r;
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2010-07-12 18:16:44 +02:00
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2010-07-08 21:01:42 +02:00
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if (!shown_pids)
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2016-04-20 16:06:58 +02:00
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show_cgroup_one_by_path(path, prefix, n_columns, !!last, flags);
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2010-07-08 21:01:42 +02:00
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if (last) {
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2019-11-20 17:43:09 +01:00
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r = show_cgroup_name(last, prefix, special_glyph(SPECIAL_GLYPH_TREE_RIGHT));
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if (r < 0)
|
|
|
|
return r;
|
2010-07-08 21:01:42 +02:00
|
|
|
|
2012-04-16 17:35:58 +02:00
|
|
|
if (!p2) {
|
2019-07-11 19:14:16 +02:00
|
|
|
p2 = strjoin(prefix, " ");
|
2013-04-16 04:36:06 +02:00
|
|
|
if (!p2)
|
|
|
|
return -ENOMEM;
|
2012-04-16 17:35:58 +02:00
|
|
|
}
|
2010-07-08 21:01:42 +02:00
|
|
|
|
2016-04-20 16:06:58 +02:00
|
|
|
show_cgroup_by_path(last, p2, n_columns-2, flags);
|
2010-07-08 21:01:42 +02:00
|
|
|
}
|
|
|
|
|
2013-04-16 04:36:06 +02:00
|
|
|
return 0;
|
2010-07-08 06:08:32 +02:00
|
|
|
}
|
2010-07-12 18:16:44 +02:00
|
|
|
|
2016-04-20 15:28:28 +02:00
|
|
|
int show_cgroup(const char *controller,
|
|
|
|
const char *path,
|
|
|
|
const char *prefix,
|
Rework cmdline printing to use unicode
The functions to retrieve and print process cmdlines were based on the
assumption that they contain printable ASCII, and everything else
should be filtered out. That assumption doesn't hold in today's world,
where people are free to use unicode everywhere.
This replaces the custom cmdline reading code with a more generic approach
using utf8_escape_non_printable_full().
For kernel threads, truncation is done on the parenthesized name, so we'll
get "[worker]", "[worker…]", …, "[w…]", "[…", "…" as we reduce the number of
available columns.
This implementation is most likely slower for very long cmdlines, but I don't
think this is very important. The common case is to have short commandlines,
and should print those properly. Absurdly long cmdlines are the exception,
which needs to be handled correctly and safely, but speed is not too important.
Fixes #12532.
v2:
- use size_t for the number of columns. This change propagates into various
other functions that call get_process_cmdline(), increasing the size of the
patch, but the changes are rather trivial.
2019-05-15 11:20:26 +02:00
|
|
|
size_t n_columns,
|
2016-04-20 15:28:28 +02:00
|
|
|
OutputFlags flags) {
|
2013-04-16 04:36:06 +02:00
|
|
|
_cleanup_free_ char *p = NULL;
|
2010-07-12 18:16:44 +02:00
|
|
|
int r;
|
|
|
|
|
|
|
|
assert(path);
|
|
|
|
|
2012-01-22 18:18:51 +01:00
|
|
|
r = cg_get_path(controller, path, NULL, &p);
|
|
|
|
if (r < 0)
|
2010-07-12 18:16:44 +02:00
|
|
|
return r;
|
|
|
|
|
2016-04-20 16:06:58 +02:00
|
|
|
return show_cgroup_by_path(p, prefix, n_columns, flags);
|
2010-07-12 18:16:44 +02:00
|
|
|
}
|
2012-04-16 18:56:18 +02:00
|
|
|
|
2016-04-20 15:28:28 +02:00
|
|
|
static int show_extra_pids(
|
|
|
|
const char *controller,
|
|
|
|
const char *path,
|
|
|
|
const char *prefix,
|
Rework cmdline printing to use unicode
The functions to retrieve and print process cmdlines were based on the
assumption that they contain printable ASCII, and everything else
should be filtered out. That assumption doesn't hold in today's world,
where people are free to use unicode everywhere.
This replaces the custom cmdline reading code with a more generic approach
using utf8_escape_non_printable_full().
For kernel threads, truncation is done on the parenthesized name, so we'll
get "[worker]", "[worker…]", …, "[w…]", "[…", "…" as we reduce the number of
available columns.
This implementation is most likely slower for very long cmdlines, but I don't
think this is very important. The common case is to have short commandlines,
and should print those properly. Absurdly long cmdlines are the exception,
which needs to be handled correctly and safely, but speed is not too important.
Fixes #12532.
v2:
- use size_t for the number of columns. This change propagates into various
other functions that call get_process_cmdline(), increasing the size of the
patch, but the changes are rather trivial.
2019-05-15 11:20:26 +02:00
|
|
|
size_t n_columns,
|
2016-04-20 15:28:28 +02:00
|
|
|
const pid_t pids[],
|
|
|
|
unsigned n_pids,
|
|
|
|
OutputFlags flags) {
|
|
|
|
|
2013-04-18 09:11:22 +02:00
|
|
|
_cleanup_free_ pid_t *copy = NULL;
|
2012-04-16 18:56:18 +02:00
|
|
|
unsigned i, j;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
assert(path);
|
|
|
|
|
|
|
|
if (n_pids <= 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (n_columns <= 0)
|
|
|
|
n_columns = columns();
|
|
|
|
|
2013-04-16 04:36:06 +02:00
|
|
|
prefix = strempty(prefix);
|
2012-04-16 18:56:18 +02:00
|
|
|
|
|
|
|
copy = new(pid_t, n_pids);
|
|
|
|
if (!copy)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
for (i = 0, j = 0; i < n_pids; i++) {
|
2013-04-18 09:11:22 +02:00
|
|
|
_cleanup_free_ char *k = NULL;
|
2012-04-16 18:56:18 +02:00
|
|
|
|
2013-04-16 04:36:06 +02:00
|
|
|
r = cg_pid_get_path(controller, pids[i], &k);
|
2013-04-02 05:11:54 +02:00
|
|
|
if (r < 0)
|
2012-04-16 18:56:18 +02:00
|
|
|
return r;
|
|
|
|
|
|
|
|
if (path_startswith(k, path))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
copy[j++] = pids[i];
|
|
|
|
}
|
|
|
|
|
2016-04-20 16:06:58 +02:00
|
|
|
show_pid_array(copy, j, prefix, n_columns, true, false, flags);
|
2012-04-16 18:56:18 +02:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2016-04-20 15:28:28 +02:00
|
|
|
int show_cgroup_and_extra(
|
|
|
|
const char *controller,
|
|
|
|
const char *path,
|
|
|
|
const char *prefix,
|
Rework cmdline printing to use unicode
The functions to retrieve and print process cmdlines were based on the
assumption that they contain printable ASCII, and everything else
should be filtered out. That assumption doesn't hold in today's world,
where people are free to use unicode everywhere.
This replaces the custom cmdline reading code with a more generic approach
using utf8_escape_non_printable_full().
For kernel threads, truncation is done on the parenthesized name, so we'll
get "[worker]", "[worker…]", …, "[w…]", "[…", "…" as we reduce the number of
available columns.
This implementation is most likely slower for very long cmdlines, but I don't
think this is very important. The common case is to have short commandlines,
and should print those properly. Absurdly long cmdlines are the exception,
which needs to be handled correctly and safely, but speed is not too important.
Fixes #12532.
v2:
- use size_t for the number of columns. This change propagates into various
other functions that call get_process_cmdline(), increasing the size of the
patch, but the changes are rather trivial.
2019-05-15 11:20:26 +02:00
|
|
|
size_t n_columns,
|
2016-04-20 15:28:28 +02:00
|
|
|
const pid_t extra_pids[],
|
|
|
|
unsigned n_extra_pids,
|
|
|
|
OutputFlags flags) {
|
|
|
|
|
2012-04-16 18:56:18 +02:00
|
|
|
int r;
|
|
|
|
|
|
|
|
assert(path);
|
|
|
|
|
2016-04-20 16:06:58 +02:00
|
|
|
r = show_cgroup(controller, path, prefix, n_columns, flags);
|
2012-04-16 18:56:18 +02:00
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
2013-01-14 18:16:50 +01:00
|
|
|
return show_extra_pids(controller, path, prefix, n_columns, extra_pids, n_extra_pids, flags);
|
2012-04-16 18:56:18 +02:00
|
|
|
}
|
|
|
|
|
2017-02-01 20:30:57 +01:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2017-02-02 02:26:58 +01:00
|
|
|
int show_cgroup_get_path_and_warn(
|
2017-02-01 19:25:27 +01:00
|
|
|
const char *machine,
|
2017-02-02 02:26:58 +01:00
|
|
|
const char *prefix,
|
2017-02-01 19:25:27 +01:00
|
|
|
char **ret) {
|
|
|
|
|
|
|
|
int r;
|
2017-02-02 02:26:58 +01:00
|
|
|
_cleanup_free_ char *root = NULL;
|
|
|
|
|
|
|
|
if (machine) {
|
|
|
|
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
|
2017-02-01 20:30:57 +01:00
|
|
|
_cleanup_free_ char *unit = NULL;
|
2017-02-02 02:26:58 +01:00
|
|
|
const char *m;
|
|
|
|
|
|
|
|
m = strjoina("/run/systemd/machines/", machine);
|
2018-11-12 14:18:03 +01:00
|
|
|
r = parse_env_file(NULL, m, "SCOPE", &unit);
|
2017-02-02 02:26:58 +01:00
|
|
|
if (r < 0)
|
|
|
|
return log_error_errno(r, "Failed to load machine data: %m");
|
2017-02-01 19:25:27 +01:00
|
|
|
|
2017-02-02 02:26:58 +01:00
|
|
|
r = bus_connect_transport_systemd(BUS_TRANSPORT_LOCAL, NULL, false, &bus);
|
|
|
|
if (r < 0)
|
2020-07-20 13:20:52 +02:00
|
|
|
return bus_log_connect_error(r);
|
2017-02-02 02:26:58 +01:00
|
|
|
|
2017-02-01 20:30:57 +01:00
|
|
|
r = show_cgroup_get_unit_path_and_warn(bus, unit, &root);
|
2017-02-02 02:26:58 +01:00
|
|
|
if (r < 0)
|
2017-02-01 20:30:57 +01:00
|
|
|
return r;
|
2017-02-02 02:26:58 +01:00
|
|
|
} else {
|
|
|
|
r = cg_get_root_path(&root);
|
2017-02-01 19:25:27 +01:00
|
|
|
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");
|
|
|
|
}
|
|
|
|
|
2017-02-02 02:26:58 +01:00
|
|
|
if (prefix) {
|
|
|
|
char *t;
|
2017-02-01 19:25:27 +01:00
|
|
|
|
2017-02-02 02:26:58 +01:00
|
|
|
t = strjoin(root, prefix);
|
|
|
|
if (!t)
|
|
|
|
return log_oom();
|
2017-02-01 19:25:27 +01:00
|
|
|
|
2017-02-02 02:26:58 +01:00
|
|
|
*ret = t;
|
2018-04-05 07:26:26 +02:00
|
|
|
} else
|
|
|
|
*ret = TAKE_PTR(root);
|
2017-02-01 19:25:27 +01:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|