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 unsigned ilog10(unsigned long ul) {
54 static void show_pid_array(int pids[], unsigned n_pids, const char *prefix, unsigned n_columns, bool extra, bool more, bool kernel_threads) {
58 /* Filter duplicates */
60 for (i = 0; i < n_pids; i++) {
63 if (pids[i] > biggest)
66 for (j = i+1; j < n_pids; j++)
67 if (pids[i] == pids[j])
76 qsort(pids, n_pids, sizeof(pid_t), compare);
83 for (i = 0; i < n_pids; i++) {
86 get_process_cmdline(pids[i], n_columns, true, &t);
88 printf("%s%s %*lu %s\n",
90 extra ? "\342\200\243" : ((more || i < n_pids-1) ? "\342\224\234" : "\342\224\224"),
91 (int) ilog10(biggest),
92 (unsigned long) pids[i],
100 static int show_cgroup_one_by_path(const char *path, const char *prefix, unsigned n_columns, bool more, bool kernel_threads) {
103 size_t n = 0, n_allocated = 0;
109 r = cg_fix_path(path, &p);
113 r = asprintf(&fn, "%s/cgroup.procs", p);
123 while ((r = cg_read_pid(f, &pid)) > 0) {
125 if (!kernel_threads && is_kernel_thread(pid) > 0)
128 if (n >= n_allocated) {
131 n_allocated = MAX(16U, n*2U);
133 npids = realloc(pids, sizeof(pid_t) * n_allocated);
142 assert(n < n_allocated);
150 show_pid_array(pids, n, prefix, n_columns, false, more, kernel_threads);
163 int show_cgroup_by_path(const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, bool all) {
166 char *p1 = NULL, *p2 = NULL, *fn = NULL, *gn = NULL;
167 bool shown_pids = false;
173 n_columns = columns();
178 r = cg_fix_path(path, &fn);
188 while ((r = cg_read_subgroup(d, &gn)) > 0) {
191 r = asprintf(&k, "%s/%s", fn, gn);
198 if (!all && cg_is_empty_recursive(NULL, k, false) > 0) {
204 show_cgroup_one_by_path(path, prefix, n_columns, true, kernel_threads);
209 printf("%s\342\224\234 %s\n", prefix, path_get_file_name(last));
212 p1 = strappend(prefix, "\342\224\202 ");
220 show_cgroup_by_path(last, p1, n_columns-2, kernel_threads, all);
231 show_cgroup_one_by_path(path, prefix, n_columns, !!last, kernel_threads);
234 printf("%s\342\224\224 %s\n", prefix, path_get_file_name(last));
237 p2 = strappend(prefix, " ");
244 show_cgroup_by_path(last, p2, n_columns-2, kernel_threads, all);
260 int show_cgroup(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, bool all) {
267 r = cg_get_path(controller, path, NULL, &p);
271 r = show_cgroup_by_path(p, prefix, n_columns, kernel_threads, all);
277 static int show_extra_pids(const char *controller, const char *path, const char *prefix, unsigned n_columns, const pid_t pids[], unsigned n_pids) {
289 n_columns = columns();
294 copy = new(pid_t, n_pids);
298 for (i = 0, j = 0; i < n_pids; i++) {
301 r = cg_get_by_pid(controller, pids[i], &k);
307 if (path_startswith(k, path))
313 show_pid_array(copy, j, prefix, n_columns, true, false, false);
319 int show_cgroup_and_extra(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, bool all, const pid_t extra_pids[], unsigned n_extra_pids) {
325 r = show_cgroup(controller, path, prefix, n_columns, kernel_threads, all);
329 return show_extra_pids(controller, path, prefix, n_columns, extra_pids, n_extra_pids);
332 int show_cgroup_and_extra_by_spec(const char *spec, const char *prefix, unsigned n_columns, bool kernel_threads, bool all, const pid_t extra_pids[], unsigned n_extra_pids) {
334 char *controller, *path;
338 r = cg_split_spec(spec, &controller, &path);
342 r = show_cgroup_and_extra(controller, path, prefix, n_columns, kernel_threads, all, extra_pids, n_extra_pids);