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 draw_special_char(extra ? DRAW_TRIANGULAR_BULLET :
92 ((more || i < n_pids-1) ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT)),
94 (unsigned long) pids[i],
102 static int show_cgroup_one_by_path(const char *path, const char *prefix, unsigned n_columns, bool more, bool kernel_threads) {
105 size_t n = 0, n_allocated = 0;
111 r = cg_fix_path(path, &p);
115 r = asprintf(&fn, "%s/cgroup.procs", p);
125 while ((r = cg_read_pid(f, &pid)) > 0) {
127 if (!kernel_threads && is_kernel_thread(pid) > 0)
130 if (n >= n_allocated) {
133 n_allocated = MAX(16U, n*2U);
135 npids = realloc(pids, sizeof(pid_t) * n_allocated);
144 assert(n < n_allocated);
152 show_pid_array(pids, n, prefix, n_columns, false, more, kernel_threads);
165 int show_cgroup_by_path(const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, bool all) {
168 char *p1 = NULL, *p2 = NULL, *fn = NULL, *gn = NULL;
169 bool shown_pids = false;
175 n_columns = columns();
180 r = cg_fix_path(path, &fn);
190 while ((r = cg_read_subgroup(d, &gn)) > 0) {
193 r = asprintf(&k, "%s/%s", fn, gn);
200 if (!all && cg_is_empty_recursive(NULL, k, false) > 0) {
206 show_cgroup_one_by_path(path, prefix, n_columns, true, kernel_threads);
211 printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_BRANCH),
212 path_get_file_name(last));
215 p1 = strappend(prefix, draw_special_char(DRAW_TREE_VERT));
223 show_cgroup_by_path(last, p1, n_columns-2, kernel_threads, all);
234 show_cgroup_one_by_path(path, prefix, n_columns, !!last, kernel_threads);
237 printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_RIGHT),
238 path_get_file_name(last));
241 p2 = strappend(prefix, " ");
248 show_cgroup_by_path(last, p2, n_columns-2, kernel_threads, all);
264 int show_cgroup(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, bool all) {
271 r = cg_get_path(controller, path, NULL, &p);
275 r = show_cgroup_by_path(p, prefix, n_columns, kernel_threads, all);
281 static int show_extra_pids(const char *controller, const char *path, const char *prefix, unsigned n_columns, const pid_t pids[], unsigned n_pids) {
293 n_columns = columns();
298 copy = new(pid_t, n_pids);
302 for (i = 0, j = 0; i < n_pids; i++) {
305 r = cg_get_by_pid(controller, pids[i], &k);
311 if (path_startswith(k, path))
317 show_pid_array(copy, j, prefix, n_columns, true, false, false);
323 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) {
329 r = show_cgroup(controller, path, prefix, n_columns, kernel_threads, all);
333 return show_extra_pids(controller, path, prefix, n_columns, extra_pids, n_extra_pids);
336 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) {
338 char *controller, *path;
342 r = cg_split_spec(spec, &controller, &path);
346 r = show_cgroup_and_extra(controller, path, prefix, n_columns, kernel_threads, all, extra_pids, n_extra_pids);