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) {
55 unsigned i, m, pid_width;
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])
74 pid_width = ilog10(biggest);
77 qsort(pids, n_pids, sizeof(pid_t), compare);
79 if (n_columns > pid_width+2)
80 n_columns -= pid_width+2;
84 for (i = 0; i < n_pids; i++) {
87 get_process_cmdline(pids[i], n_columns, true, &t);
89 printf("%s%s %*lu %s\n",
91 extra ? "\342\200\243" : ((more || i < n_pids-1) ? "\342\224\234" : "\342\224\224"),
93 (unsigned long) pids[i],
101 static int show_cgroup_one_by_path(const char *path, const char *prefix, unsigned n_columns, bool more, bool kernel_threads) {
104 size_t n = 0, n_allocated = 0;
110 r = cg_fix_path(path, &p);
114 r = asprintf(&fn, "%s/cgroup.procs", p);
124 while ((r = cg_read_pid(f, &pid)) > 0) {
126 if (!kernel_threads && is_kernel_thread(pid) > 0)
129 if (n >= n_allocated) {
132 n_allocated = MAX(16U, n*2U);
134 npids = realloc(pids, sizeof(pid_t) * n_allocated);
143 assert(n < n_allocated);
151 show_pid_array(pids, n, prefix, n_columns, false, more, kernel_threads);
164 int show_cgroup_by_path(const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, bool all) {
167 char *p1 = NULL, *p2 = NULL, *fn = NULL, *gn = NULL;
168 bool shown_pids = false;
174 n_columns = columns();
179 r = cg_fix_path(path, &fn);
189 while ((r = cg_read_subgroup(d, &gn)) > 0) {
192 r = asprintf(&k, "%s/%s", fn, gn);
199 if (!all && cg_is_empty_recursive(NULL, k, false) > 0) {
205 show_cgroup_one_by_path(path, prefix, n_columns, true, kernel_threads);
210 printf("%s\342\224\234 %s\n", prefix, path_get_file_name(last));
213 p1 = strappend(prefix, "\342\224\202 ");
221 show_cgroup_by_path(last, p1, n_columns-2, kernel_threads, all);
232 show_cgroup_one_by_path(path, prefix, n_columns, !!last, kernel_threads);
235 printf("%s\342\224\224 %s\n", prefix, path_get_file_name(last));
238 p2 = strappend(prefix, " ");
245 show_cgroup_by_path(last, p2, n_columns-2, kernel_threads, all);
261 int show_cgroup(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, bool all) {
268 r = cg_get_path(controller, path, NULL, &p);
272 r = show_cgroup_by_path(p, prefix, n_columns, kernel_threads, all);
278 static int show_extra_pids(const char *controller, const char *path, const char *prefix, unsigned n_columns, const pid_t pids[], unsigned n_pids) {
290 n_columns = columns();
295 copy = new(pid_t, n_pids);
299 for (i = 0, j = 0; i < n_pids; i++) {
302 r = cg_get_by_pid(controller, pids[i], &k);
308 if (path_startswith(k, path))
314 show_pid_array(copy, j, prefix, n_columns, true, false, false);
320 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) {
326 r = show_cgroup(controller, path, prefix, n_columns, kernel_threads, all);
330 return show_extra_pids(controller, path, prefix, n_columns, extra_pids, n_extra_pids);
333 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) {
335 char *controller, *path;
339 r = cg_split_spec(spec, &controller, &path);
343 r = show_cgroup_and_extra(controller, path, prefix, n_columns, kernel_threads, all, extra_pids, n_extra_pids);