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/>.
28 #include "formats-util.h"
30 #include "path-util.h"
31 #include "cgroup-util.h"
32 #include "cgroup-show.h"
33 #include "terminal-util.h"
35 static int compare(const void *a, const void *b) {
36 const pid_t *p = a, *q = b;
45 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) {
46 unsigned i, j, pid_width;
51 qsort(pids, n_pids, sizeof(pid_t), compare);
53 /* Filter duplicates */
54 for (j = 0, i = 1; i < n_pids; i++) {
55 if (pids[i] == pids[j])
60 pid_width = DECIMAL_STR_WIDTH(pids[j]);
62 if (flags & OUTPUT_FULL_WIDTH)
65 if (n_columns > pid_width+2)
66 n_columns -= pid_width+2;
70 for (i = 0; i < n_pids; i++) {
71 _cleanup_free_ char *t = NULL;
73 get_process_cmdline(pids[i], n_columns, true, &t);
76 printf("%s%s ", prefix, draw_special_char(DRAW_TRIANGULAR_BULLET));
78 printf("%s%s", prefix, draw_special_char(((more || i < n_pids-1) ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT)));
80 printf("%*"PID_PRI" %s\n", pid_width, pids[i], strna(t));
85 static int show_cgroup_one_by_path(const char *path, const char *prefix, unsigned n_columns, bool more, bool kernel_threads, OutputFlags flags) {
87 _cleanup_fclose_ FILE *f = NULL;
88 size_t n = 0, n_allocated = 0;
89 _cleanup_free_ pid_t *pids = NULL;
90 _cleanup_free_ char *p = NULL;
94 r = cg_mangle_path(path, &p);
98 fn = strjoina(p, "/cgroup.procs");
103 while ((r = cg_read_pid(f, &pid)) > 0) {
105 if (!kernel_threads && is_kernel_thread(pid) > 0)
108 if (!GREEDY_REALLOC(pids, n_allocated, n + 1))
111 assert(n < n_allocated);
118 show_pid_array(pids, n, prefix, n_columns, false, more, kernel_threads, flags);
123 int show_cgroup_by_path(const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, OutputFlags flags) {
124 _cleanup_free_ char *fn = NULL, *p1 = NULL, *last = NULL, *p2 = NULL;
125 _cleanup_closedir_ DIR *d = NULL;
127 bool shown_pids = false;
133 n_columns = columns();
138 r = cg_mangle_path(path, &fn);
146 while ((r = cg_read_subgroup(d, &gn)) > 0) {
147 _cleanup_free_ char *k = NULL;
149 k = strjoin(fn, "/", gn, NULL);
154 if (!(flags & OUTPUT_SHOW_ALL) && cg_is_empty_recursive(NULL, k, false) > 0)
158 show_cgroup_one_by_path(path, prefix, n_columns, true, kernel_threads, flags);
163 printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_BRANCH),
167 p1 = strappend(prefix, draw_special_char(DRAW_TREE_VERTICAL));
172 show_cgroup_by_path(last, p1, n_columns-2, kernel_threads, flags);
184 show_cgroup_one_by_path(path, prefix, n_columns, !!last, kernel_threads, flags);
187 printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_RIGHT),
191 p2 = strappend(prefix, " ");
196 show_cgroup_by_path(last, p2, n_columns-2, kernel_threads, flags);
202 int show_cgroup(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, OutputFlags flags) {
203 _cleanup_free_ char *p = NULL;
208 r = cg_get_path(controller, path, NULL, &p);
212 return show_cgroup_by_path(p, prefix, n_columns, kernel_threads, flags);
215 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) {
216 _cleanup_free_ pid_t *copy = NULL;
226 n_columns = columns();
228 prefix = strempty(prefix);
230 copy = new(pid_t, n_pids);
234 for (i = 0, j = 0; i < n_pids; i++) {
235 _cleanup_free_ char *k = NULL;
237 r = cg_pid_get_path(controller, pids[i], &k);
241 if (path_startswith(k, path))
247 show_pid_array(copy, j, prefix, n_columns, true, false, false, flags);
252 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) {
257 r = show_cgroup(controller, path, prefix, n_columns, kernel_threads, flags);
261 return show_extra_pids(controller, path, prefix, n_columns, extra_pids, n_extra_pids, flags);
264 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) {
265 _cleanup_free_ char *controller = NULL, *path = NULL;
270 r = cg_split_spec(spec, &controller, &path);
274 return show_cgroup_and_extra(controller, path, prefix, n_columns, kernel_threads, extra_pids, n_extra_pids, flags);