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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
ab35fb1b LP |
2 | |
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
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 | |
ab35fb1b LP |
11 | (at your option) any later version. |
12 | ||
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
ab35fb1b | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
ab35fb1b LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
22 | #include <stdio.h> | |
23 | #include <string.h> | |
fa776d8e LP |
24 | #include <dirent.h> |
25 | #include <errno.h> | |
ab35fb1b LP |
26 | |
27 | #include "util.h" | |
6482f626 | 28 | #include "formats-util.h" |
0b452006 | 29 | #include "process-util.h" |
ab35fb1b | 30 | #include "macro.h" |
9eb977db | 31 | #include "path-util.h" |
c6c18be3 | 32 | #include "cgroup-util.h" |
ab35fb1b LP |
33 | #include "cgroup-show.h" |
34 | ||
35 | static int compare(const void *a, const void *b) { | |
36 | const pid_t *p = a, *q = b; | |
37 | ||
38 | if (*p < *q) | |
39 | return -1; | |
40 | if (*p > *q) | |
41 | return 1; | |
42 | return 0; | |
43 | } | |
44 | ||
3da7a50f ZJS |
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; | |
b69d29ce | 47 | |
da41abc5 | 48 | if (n_pids == 0) |
3637713a LP |
49 | return; |
50 | ||
3da7a50f | 51 | qsort(pids, n_pids, sizeof(pid_t), compare); |
b69d29ce | 52 | |
3da7a50f ZJS |
53 | /* Filter duplicates */ |
54 | for (j = 0, i = 1; i < n_pids; i++) { | |
55 | if (pids[i] == pids[j]) | |
56 | continue; | |
57 | pids[++j] = pids[i]; | |
b69d29ce | 58 | } |
3da7a50f ZJS |
59 | n_pids = j + 1; |
60 | pid_width = DECIMAL_STR_WIDTH(pids[j]); | |
b69d29ce | 61 | |
b47d419c | 62 | if (flags & OUTPUT_FULL_WIDTH) |
9bdbc2e2 LN |
63 | n_columns = 0; |
64 | else { | |
65 | if (n_columns > pid_width+2) | |
66 | n_columns -= pid_width+2; | |
67 | else | |
68 | n_columns = 20; | |
69 | } | |
b69d29ce | 70 | for (i = 0; i < n_pids; i++) { |
b47d419c | 71 | _cleanup_free_ char *t = NULL; |
b69d29ce LP |
72 | |
73 | get_process_cmdline(pids[i], n_columns, true, &t); | |
74 | ||
6b01f1d3 LP |
75 | if (extra) |
76 | printf("%s%s ", prefix, draw_special_char(DRAW_TRIANGULAR_BULLET)); | |
77 | else | |
78 | printf("%s%s", prefix, draw_special_char(((more || i < n_pids-1) ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT))); | |
79 | ||
3da7a50f | 80 | printf("%*"PID_PRI" %s\n", pid_width, pids[i], strna(t)); |
b69d29ce LP |
81 | } |
82 | } | |
83 | ||
84 | ||
9bdbc2e2 | 85 | static int show_cgroup_one_by_path(const char *path, const char *prefix, unsigned n_columns, bool more, bool kernel_threads, OutputFlags flags) { |
ab35fb1b | 86 | char *fn; |
7027ff61 | 87 | _cleanup_fclose_ FILE *f = NULL; |
ab35fb1b | 88 | size_t n = 0, n_allocated = 0; |
7027ff61 | 89 | _cleanup_free_ pid_t *pids = NULL; |
b47d419c | 90 | _cleanup_free_ char *p = NULL; |
b69d29ce | 91 | pid_t pid; |
fa776d8e | 92 | int r; |
ab35fb1b | 93 | |
7027ff61 | 94 | r = cg_mangle_path(path, &p); |
b69d29ce | 95 | if (r < 0) |
35d2e7ec | 96 | return r; |
ab35fb1b | 97 | |
63c372cb | 98 | fn = strjoina(p, "/cgroup.procs"); |
fa776d8e | 99 | f = fopen(fn, "re"); |
ab35fb1b | 100 | if (!f) |
fa776d8e | 101 | return -errno; |
ab35fb1b | 102 | |
c6c18be3 | 103 | while ((r = cg_read_pid(f, &pid)) > 0) { |
ab35fb1b | 104 | |
1e5678d0 LP |
105 | if (!kernel_threads && is_kernel_thread(pid) > 0) |
106 | continue; | |
107 | ||
3da7a50f ZJS |
108 | if (!GREEDY_REALLOC(pids, n_allocated, n + 1)) |
109 | return -ENOMEM; | |
ab35fb1b LP |
110 | |
111 | assert(n < n_allocated); | |
c6c18be3 | 112 | pids[n++] = pid; |
ab35fb1b LP |
113 | } |
114 | ||
c6c18be3 | 115 | if (r < 0) |
7027ff61 | 116 | return r; |
c6c18be3 | 117 | |
da41abc5 | 118 | show_pid_array(pids, n, prefix, n_columns, false, more, kernel_threads, flags); |
ab35fb1b | 119 | |
7027ff61 | 120 | return 0; |
fa776d8e LP |
121 | } |
122 | ||
9bdbc2e2 | 123 | int show_cgroup_by_path(const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, OutputFlags flags) { |
7027ff61 LP |
124 | _cleanup_free_ char *fn = NULL, *p1 = NULL, *last = NULL, *p2 = NULL; |
125 | _cleanup_closedir_ DIR *d = NULL; | |
126 | char *gn = NULL; | |
fa776d8e LP |
127 | bool shown_pids = false; |
128 | int r; | |
129 | ||
b69d29ce LP |
130 | assert(path); |
131 | ||
fa776d8e LP |
132 | if (n_columns <= 0) |
133 | n_columns = columns(); | |
134 | ||
135 | if (!prefix) | |
136 | prefix = ""; | |
137 | ||
7027ff61 | 138 | r = cg_mangle_path(path, &fn); |
c3175a7f | 139 | if (r < 0) |
35d2e7ec | 140 | return r; |
fa776d8e | 141 | |
c3175a7f | 142 | d = opendir(fn); |
7027ff61 | 143 | if (!d) |
fa776d8e | 144 | return -errno; |
fa776d8e | 145 | |
35d2e7ec | 146 | while ((r = cg_read_subgroup(d, &gn)) > 0) { |
7027ff61 | 147 | _cleanup_free_ char *k = NULL; |
c3175a7f | 148 | |
7027ff61 | 149 | k = strjoin(fn, "/", gn, NULL); |
c3175a7f | 150 | free(gn); |
7027ff61 LP |
151 | if (!k) |
152 | return -ENOMEM; | |
c3175a7f | 153 | |
7027ff61 | 154 | if (!(flags & OUTPUT_SHOW_ALL) && cg_is_empty_recursive(NULL, k, false) > 0) |
c3175a7f | 155 | continue; |
fa776d8e LP |
156 | |
157 | if (!shown_pids) { | |
9bdbc2e2 | 158 | show_cgroup_one_by_path(path, prefix, n_columns, true, kernel_threads, flags); |
fa776d8e LP |
159 | shown_pids = true; |
160 | } | |
161 | ||
162 | if (last) { | |
45a5ff0d | 163 | printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_BRANCH), |
2b6bf07d | 164 | basename(last)); |
fa776d8e | 165 | |
c3175a7f | 166 | if (!p1) { |
6b01f1d3 | 167 | p1 = strappend(prefix, draw_special_char(DRAW_TREE_VERTICAL)); |
7027ff61 LP |
168 | if (!p1) |
169 | return -ENOMEM; | |
c3175a7f | 170 | } |
fa776d8e | 171 | |
9bdbc2e2 | 172 | show_cgroup_by_path(last, p1, n_columns-2, kernel_threads, flags); |
fa776d8e | 173 | free(last); |
fa776d8e LP |
174 | } |
175 | ||
c3175a7f | 176 | last = k; |
7027ff61 | 177 | k = NULL; |
fa776d8e LP |
178 | } |
179 | ||
35d2e7ec | 180 | if (r < 0) |
7027ff61 | 181 | return r; |
35d2e7ec | 182 | |
fa776d8e | 183 | if (!shown_pids) |
9bdbc2e2 | 184 | show_cgroup_one_by_path(path, prefix, n_columns, !!last, kernel_threads, flags); |
fa776d8e LP |
185 | |
186 | if (last) { | |
45a5ff0d | 187 | printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_RIGHT), |
2b6bf07d | 188 | basename(last)); |
fa776d8e | 189 | |
c3175a7f LP |
190 | if (!p2) { |
191 | p2 = strappend(prefix, " "); | |
7027ff61 LP |
192 | if (!p2) |
193 | return -ENOMEM; | |
c3175a7f | 194 | } |
fa776d8e | 195 | |
9bdbc2e2 | 196 | show_cgroup_by_path(last, p2, n_columns-2, kernel_threads, flags); |
fa776d8e LP |
197 | } |
198 | ||
7027ff61 | 199 | return 0; |
ab35fb1b | 200 | } |
35d2e7ec | 201 | |
9bdbc2e2 | 202 | int show_cgroup(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, OutputFlags flags) { |
7027ff61 | 203 | _cleanup_free_ char *p = NULL; |
35d2e7ec LP |
204 | int r; |
205 | ||
35d2e7ec LP |
206 | assert(path); |
207 | ||
1e5678d0 LP |
208 | r = cg_get_path(controller, path, NULL, &p); |
209 | if (r < 0) | |
35d2e7ec LP |
210 | return r; |
211 | ||
7027ff61 | 212 | return show_cgroup_by_path(p, prefix, n_columns, kernel_threads, flags); |
35d2e7ec | 213 | } |
b69d29ce | 214 | |
9bdbc2e2 | 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) { |
7fd1b19b | 216 | _cleanup_free_ pid_t *copy = NULL; |
b69d29ce LP |
217 | unsigned i, j; |
218 | int r; | |
219 | ||
b69d29ce LP |
220 | assert(path); |
221 | ||
222 | if (n_pids <= 0) | |
223 | return 0; | |
224 | ||
225 | if (n_columns <= 0) | |
226 | n_columns = columns(); | |
227 | ||
7027ff61 | 228 | prefix = strempty(prefix); |
b69d29ce LP |
229 | |
230 | copy = new(pid_t, n_pids); | |
231 | if (!copy) | |
232 | return -ENOMEM; | |
233 | ||
234 | for (i = 0, j = 0; i < n_pids; i++) { | |
7fd1b19b | 235 | _cleanup_free_ char *k = NULL; |
b69d29ce | 236 | |
7027ff61 | 237 | r = cg_pid_get_path(controller, pids[i], &k); |
050fbdb8 | 238 | if (r < 0) |
b69d29ce | 239 | return r; |
b69d29ce LP |
240 | |
241 | if (path_startswith(k, path)) | |
242 | continue; | |
243 | ||
244 | copy[j++] = pids[i]; | |
245 | } | |
246 | ||
9bdbc2e2 | 247 | show_pid_array(copy, j, prefix, n_columns, true, false, false, flags); |
b69d29ce | 248 | |
b69d29ce LP |
249 | return 0; |
250 | } | |
251 | ||
9bdbc2e2 | 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) { |
b69d29ce LP |
253 | int r; |
254 | ||
b69d29ce LP |
255 | assert(path); |
256 | ||
9bdbc2e2 | 257 | r = show_cgroup(controller, path, prefix, n_columns, kernel_threads, flags); |
b69d29ce LP |
258 | if (r < 0) |
259 | return r; | |
260 | ||
9bdbc2e2 | 261 | return show_extra_pids(controller, path, prefix, n_columns, extra_pids, n_extra_pids, flags); |
b69d29ce LP |
262 | } |
263 | ||
9bdbc2e2 | 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) { |
b08121d0 | 265 | _cleanup_free_ char *controller = NULL, *path = NULL; |
7027ff61 | 266 | int r; |
b69d29ce LP |
267 | |
268 | assert(spec); | |
269 | ||
270 | r = cg_split_spec(spec, &controller, &path); | |
271 | if (r < 0) | |
272 | return r; | |
273 | ||
9bdbc2e2 | 274 | return show_cgroup_and_extra(controller, path, prefix, n_columns, kernel_threads, extra_pids, n_extra_pids, flags); |
b69d29ce | 275 | } |