]>
Commit | Line | Data |
---|---|---|
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 | ||
fa776d8e LP |
22 | #include <dirent.h> |
23 | #include <errno.h> | |
07630cea LP |
24 | #include <stdio.h> |
25 | #include <string.h> | |
ab35fb1b | 26 | |
3ffd4af2 | 27 | #include "cgroup-show.h" |
07630cea | 28 | #include "cgroup-util.h" |
3ffd4af2 | 29 | #include "fd-util.h" |
6482f626 | 30 | #include "formats-util.h" |
8752c575 | 31 | #include "locale-util.h" |
ab35fb1b | 32 | #include "macro.h" |
9eb977db | 33 | #include "path-util.h" |
07630cea LP |
34 | #include "process-util.h" |
35 | #include "string-util.h" | |
288a74cc | 36 | #include "terminal-util.h" |
07630cea | 37 | #include "util.h" |
ab35fb1b LP |
38 | |
39 | static int compare(const void *a, const void *b) { | |
40 | const pid_t *p = a, *q = b; | |
41 | ||
42 | if (*p < *q) | |
43 | return -1; | |
44 | if (*p > *q) | |
45 | return 1; | |
46 | return 0; | |
47 | } | |
48 | ||
3da7a50f ZJS |
49 | 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) { |
50 | unsigned i, j, pid_width; | |
b69d29ce | 51 | |
da41abc5 | 52 | if (n_pids == 0) |
3637713a LP |
53 | return; |
54 | ||
3da7a50f | 55 | qsort(pids, n_pids, sizeof(pid_t), compare); |
b69d29ce | 56 | |
3da7a50f ZJS |
57 | /* Filter duplicates */ |
58 | for (j = 0, i = 1; i < n_pids; i++) { | |
59 | if (pids[i] == pids[j]) | |
60 | continue; | |
61 | pids[++j] = pids[i]; | |
b69d29ce | 62 | } |
3da7a50f ZJS |
63 | n_pids = j + 1; |
64 | pid_width = DECIMAL_STR_WIDTH(pids[j]); | |
b69d29ce | 65 | |
b47d419c | 66 | if (flags & OUTPUT_FULL_WIDTH) |
9bdbc2e2 LN |
67 | n_columns = 0; |
68 | else { | |
69 | if (n_columns > pid_width+2) | |
70 | n_columns -= pid_width+2; | |
71 | else | |
72 | n_columns = 20; | |
73 | } | |
b69d29ce | 74 | for (i = 0; i < n_pids; i++) { |
b47d419c | 75 | _cleanup_free_ char *t = NULL; |
b69d29ce LP |
76 | |
77 | get_process_cmdline(pids[i], n_columns, true, &t); | |
78 | ||
6b01f1d3 LP |
79 | if (extra) |
80 | printf("%s%s ", prefix, draw_special_char(DRAW_TRIANGULAR_BULLET)); | |
81 | else | |
82 | printf("%s%s", prefix, draw_special_char(((more || i < n_pids-1) ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT))); | |
83 | ||
3da7a50f | 84 | printf("%*"PID_PRI" %s\n", pid_width, pids[i], strna(t)); |
b69d29ce LP |
85 | } |
86 | } | |
87 | ||
88 | ||
9bdbc2e2 | 89 | static int show_cgroup_one_by_path(const char *path, const char *prefix, unsigned n_columns, bool more, bool kernel_threads, OutputFlags flags) { |
ab35fb1b | 90 | char *fn; |
7027ff61 | 91 | _cleanup_fclose_ FILE *f = NULL; |
ab35fb1b | 92 | size_t n = 0, n_allocated = 0; |
7027ff61 | 93 | _cleanup_free_ pid_t *pids = NULL; |
b47d419c | 94 | _cleanup_free_ char *p = NULL; |
b69d29ce | 95 | pid_t pid; |
fa776d8e | 96 | int r; |
ab35fb1b | 97 | |
7027ff61 | 98 | r = cg_mangle_path(path, &p); |
b69d29ce | 99 | if (r < 0) |
35d2e7ec | 100 | return r; |
ab35fb1b | 101 | |
63c372cb | 102 | fn = strjoina(p, "/cgroup.procs"); |
fa776d8e | 103 | f = fopen(fn, "re"); |
ab35fb1b | 104 | if (!f) |
fa776d8e | 105 | return -errno; |
ab35fb1b | 106 | |
c6c18be3 | 107 | while ((r = cg_read_pid(f, &pid)) > 0) { |
ab35fb1b | 108 | |
1e5678d0 LP |
109 | if (!kernel_threads && is_kernel_thread(pid) > 0) |
110 | continue; | |
111 | ||
3da7a50f ZJS |
112 | if (!GREEDY_REALLOC(pids, n_allocated, n + 1)) |
113 | return -ENOMEM; | |
ab35fb1b LP |
114 | |
115 | assert(n < n_allocated); | |
c6c18be3 | 116 | pids[n++] = pid; |
ab35fb1b LP |
117 | } |
118 | ||
c6c18be3 | 119 | if (r < 0) |
7027ff61 | 120 | return r; |
c6c18be3 | 121 | |
da41abc5 | 122 | show_pid_array(pids, n, prefix, n_columns, false, more, kernel_threads, flags); |
ab35fb1b | 123 | |
7027ff61 | 124 | return 0; |
fa776d8e LP |
125 | } |
126 | ||
9bdbc2e2 | 127 | int show_cgroup_by_path(const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, OutputFlags flags) { |
7027ff61 LP |
128 | _cleanup_free_ char *fn = NULL, *p1 = NULL, *last = NULL, *p2 = NULL; |
129 | _cleanup_closedir_ DIR *d = NULL; | |
130 | char *gn = NULL; | |
fa776d8e LP |
131 | bool shown_pids = false; |
132 | int r; | |
133 | ||
b69d29ce LP |
134 | assert(path); |
135 | ||
fa776d8e LP |
136 | if (n_columns <= 0) |
137 | n_columns = columns(); | |
138 | ||
139 | if (!prefix) | |
140 | prefix = ""; | |
141 | ||
7027ff61 | 142 | r = cg_mangle_path(path, &fn); |
c3175a7f | 143 | if (r < 0) |
35d2e7ec | 144 | return r; |
fa776d8e | 145 | |
c3175a7f | 146 | d = opendir(fn); |
7027ff61 | 147 | if (!d) |
fa776d8e | 148 | return -errno; |
fa776d8e | 149 | |
35d2e7ec | 150 | while ((r = cg_read_subgroup(d, &gn)) > 0) { |
7027ff61 | 151 | _cleanup_free_ char *k = NULL; |
c3175a7f | 152 | |
7027ff61 | 153 | k = strjoin(fn, "/", gn, NULL); |
c3175a7f | 154 | free(gn); |
7027ff61 LP |
155 | if (!k) |
156 | return -ENOMEM; | |
c3175a7f | 157 | |
6f883237 | 158 | if (!(flags & OUTPUT_SHOW_ALL) && cg_is_empty_recursive(NULL, k) > 0) |
c3175a7f | 159 | continue; |
fa776d8e LP |
160 | |
161 | if (!shown_pids) { | |
9bdbc2e2 | 162 | show_cgroup_one_by_path(path, prefix, n_columns, true, kernel_threads, flags); |
fa776d8e LP |
163 | shown_pids = true; |
164 | } | |
165 | ||
166 | if (last) { | |
3d9495a8 | 167 | printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_BRANCH), cg_unescape(basename(last))); |
fa776d8e | 168 | |
c3175a7f | 169 | if (!p1) { |
6b01f1d3 | 170 | p1 = strappend(prefix, draw_special_char(DRAW_TREE_VERTICAL)); |
7027ff61 LP |
171 | if (!p1) |
172 | return -ENOMEM; | |
c3175a7f | 173 | } |
fa776d8e | 174 | |
9bdbc2e2 | 175 | show_cgroup_by_path(last, p1, n_columns-2, kernel_threads, flags); |
fa776d8e | 176 | free(last); |
fa776d8e LP |
177 | } |
178 | ||
c3175a7f | 179 | last = k; |
7027ff61 | 180 | k = NULL; |
fa776d8e LP |
181 | } |
182 | ||
35d2e7ec | 183 | if (r < 0) |
7027ff61 | 184 | return r; |
35d2e7ec | 185 | |
fa776d8e | 186 | if (!shown_pids) |
9bdbc2e2 | 187 | show_cgroup_one_by_path(path, prefix, n_columns, !!last, kernel_threads, flags); |
fa776d8e LP |
188 | |
189 | if (last) { | |
3d9495a8 | 190 | printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_RIGHT), cg_unescape(basename(last))); |
fa776d8e | 191 | |
c3175a7f LP |
192 | if (!p2) { |
193 | p2 = strappend(prefix, " "); | |
7027ff61 LP |
194 | if (!p2) |
195 | return -ENOMEM; | |
c3175a7f | 196 | } |
fa776d8e | 197 | |
9bdbc2e2 | 198 | show_cgroup_by_path(last, p2, n_columns-2, kernel_threads, flags); |
fa776d8e LP |
199 | } |
200 | ||
7027ff61 | 201 | return 0; |
ab35fb1b | 202 | } |
35d2e7ec | 203 | |
9bdbc2e2 | 204 | int show_cgroup(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads, OutputFlags flags) { |
7027ff61 | 205 | _cleanup_free_ char *p = NULL; |
35d2e7ec LP |
206 | int r; |
207 | ||
35d2e7ec LP |
208 | assert(path); |
209 | ||
1e5678d0 LP |
210 | r = cg_get_path(controller, path, NULL, &p); |
211 | if (r < 0) | |
35d2e7ec LP |
212 | return r; |
213 | ||
7027ff61 | 214 | return show_cgroup_by_path(p, prefix, n_columns, kernel_threads, flags); |
35d2e7ec | 215 | } |
b69d29ce | 216 | |
9bdbc2e2 | 217 | 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 | 218 | _cleanup_free_ pid_t *copy = NULL; |
b69d29ce LP |
219 | unsigned i, j; |
220 | int r; | |
221 | ||
b69d29ce LP |
222 | assert(path); |
223 | ||
224 | if (n_pids <= 0) | |
225 | return 0; | |
226 | ||
227 | if (n_columns <= 0) | |
228 | n_columns = columns(); | |
229 | ||
7027ff61 | 230 | prefix = strempty(prefix); |
b69d29ce LP |
231 | |
232 | copy = new(pid_t, n_pids); | |
233 | if (!copy) | |
234 | return -ENOMEM; | |
235 | ||
236 | for (i = 0, j = 0; i < n_pids; i++) { | |
7fd1b19b | 237 | _cleanup_free_ char *k = NULL; |
b69d29ce | 238 | |
7027ff61 | 239 | r = cg_pid_get_path(controller, pids[i], &k); |
050fbdb8 | 240 | if (r < 0) |
b69d29ce | 241 | return r; |
b69d29ce LP |
242 | |
243 | if (path_startswith(k, path)) | |
244 | continue; | |
245 | ||
246 | copy[j++] = pids[i]; | |
247 | } | |
248 | ||
9bdbc2e2 | 249 | show_pid_array(copy, j, prefix, n_columns, true, false, false, flags); |
b69d29ce | 250 | |
b69d29ce LP |
251 | return 0; |
252 | } | |
253 | ||
9bdbc2e2 | 254 | 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 |
255 | int r; |
256 | ||
b69d29ce LP |
257 | assert(path); |
258 | ||
9bdbc2e2 | 259 | r = show_cgroup(controller, path, prefix, n_columns, kernel_threads, flags); |
b69d29ce LP |
260 | if (r < 0) |
261 | return r; | |
262 | ||
9bdbc2e2 | 263 | return show_extra_pids(controller, path, prefix, n_columns, extra_pids, n_extra_pids, flags); |
b69d29ce LP |
264 | } |
265 | ||
9bdbc2e2 | 266 | 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 | 267 | _cleanup_free_ char *controller = NULL, *path = NULL; |
7027ff61 | 268 | int r; |
b69d29ce LP |
269 | |
270 | assert(spec); | |
271 | ||
272 | r = cg_split_spec(spec, &controller, &path); | |
273 | if (r < 0) | |
274 | return r; | |
275 | ||
9bdbc2e2 | 276 | return show_cgroup_and_extra(controller, path, prefix, n_columns, kernel_threads, extra_pids, n_extra_pids, flags); |
b69d29ce | 277 | } |