1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
29 #include "path-util.h"
30 #include "cgroup-util.h"
31 #include "cgroup-show.h"
33 static int compare(const void *a, const void *b) {
34 const pid_t *p = a, *q = b;
43 static void show_pid_array(pid_t pids[], unsigned n_pids, const char *prefix, unsigned n_columns, bool extra, bool more, bool kernel_threads, OutputFlags flags) {
44 unsigned i, j, pid_width;
49 qsort(pids, n_pids, sizeof(pid_t), compare);
51 /* Filter duplicates */
52 for (j = 0, i = 1; i < n_pids; i++) {
53 if (pids[i] == pids[j])
58 pid_width = DECIMAL_STR_WIDTH(pids[j]);
60 if (flags & OUTPUT_FULL_WIDTH)
63 if (n_columns > pid_width+2)
64 n_columns -= pid_width+2;
68 for (i = 0; i < n_pids; i++) {
69 _cleanup_free_ char *t = NULL;
71 get_process_cmdline(pids[i], n_columns, true, &t);
74 printf("%s%s ", prefix, draw_special_char(DRAW_TRIANGULAR_BULLET));
76 printf("%s%s", prefix, draw_special_char(((more || i < n_pids-1) ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT)));
78 printf("%*"PID_PRI" %s\n", pid_width, pids[i], strna(t));
83 static int show_cgroup_one_by_path(const char *path, const char *prefix, unsigned n_columns, bool more, bool kernel_threads, OutputFlags flags) {
85 _cleanup_fclose_ FILE *f = NULL;
86 size_t n = 0, n_allocated = 0;
87 _cleanup_free_ pid_t *pids = NULL;
88 _cleanup_free_ char *p = NULL;
92 r = cg_mangle_path(path, &p);
96 fn = strappenda(p, "/cgroup.procs");
101 while ((r = cg_read_pid(f, &pid)) > 0) {
103 if (!kernel_threads && is_kernel_thread(pid) > 0)
106 if (!GREEDY_REALLOC(pids, n_allocated, n + 1))
109 assert(n < n_allocated);
117 show_pid_array(pids, n, prefix, n_columns, false, more, kernel_threads, flags);
122 int show_cgroup_by_path(const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, OutputFlags flags) {
123 _cleanup_free_ char *fn = NULL, *p1 = NULL, *last = NULL, *p2 = NULL;
124 _cleanup_closedir_ DIR *d = NULL;
126 bool shown_pids = false;
132 n_columns = columns();
137 r = cg_mangle_path(path, &fn);
145 while ((r = cg_read_subgroup(d, &gn)) > 0) {
146 _cleanup_free_ char *k = NULL;
148 k = strjoin(fn, "/", gn, NULL);
153 if (!(flags & OUTPUT_SHOW_ALL) && cg_is_empty_recursive(NULL, k, false) > 0)
157 show_cgroup_one_by_path(path, prefix, n_columns, true, kernel_threads, flags);
162 printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_BRANCH),
166 p1 = strappend(prefix, draw_special_char(DRAW_TREE_VERTICAL));
171 show_cgroup_by_path(last, p1, n_columns-2, kernel_threads, flags);
183 show_cgroup_one_by_path(path, prefix, n_columns, !!last, kernel_threads, flags);
186 printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_RIGHT),
190 p2 = strappend(prefix, " ");
195 show_cgroup_by_path(last, p2, n_columns-2, kernel_threads, flags);
201 int show_cgroup(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, OutputFlags flags) {
202 _cleanup_free_ char *p = NULL;
207 r = cg_get_path(controller, path, NULL, &p);
211 return show_cgroup_by_path(p, prefix, n_columns, kernel_threads, flags);
214 static int show_extra_pids(const char *controller, const char *path, const char *prefix, unsigned n_columns, const pid_t pids[], unsigned n_pids, OutputFlags flags) {
215 _cleanup_free_ pid_t *copy = NULL;
225 n_columns = columns();
227 prefix = strempty(prefix);
229 copy = new(pid_t, n_pids);
233 for (i = 0, j = 0; i < n_pids; i++) {
234 _cleanup_free_ char *k = NULL;
236 r = cg_pid_get_path(controller, pids[i], &k);
240 if (path_startswith(k, path))
246 show_pid_array(copy, j, prefix, n_columns, true, false, false, flags);
251 int show_cgroup_and_extra(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, const pid_t extra_pids[], unsigned n_extra_pids, OutputFlags flags) {
256 r = show_cgroup(controller, path, prefix, n_columns, kernel_threads, flags);
260 return show_extra_pids(controller, path, prefix, n_columns, extra_pids, n_extra_pids, flags);
263 int show_cgroup_and_extra_by_spec(const char *spec, const char *prefix, unsigned n_columns, bool kernel_threads, const pid_t extra_pids[], unsigned n_extra_pids, OutputFlags flags) {
264 _cleanup_free_ char *controller = NULL, *path = NULL;
269 r = cg_split_spec(spec, &controller, &path);
273 return show_cgroup_and_extra(controller, path, prefix, n_columns, kernel_threads, extra_pids, n_extra_pids, flags);