diff options
Diffstat (limited to 'src/cgroup-show.c')
| -rw-r--r-- | src/cgroup-show.c | 261 |
1 files changed, 0 insertions, 261 deletions
diff --git a/src/cgroup-show.c b/src/cgroup-show.c deleted file mode 100644 index ee2a241c..00000000 --- a/src/cgroup-show.c +++ /dev/null @@ -1,261 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdio.h> -#include <string.h> -#include <dirent.h> -#include <errno.h> - -#include "util.h" -#include "macro.h" -#include "cgroup-util.h" -#include "cgroup-show.h" - -static int compare(const void *a, const void *b) { - const pid_t *p = a, *q = b; - - if (*p < *q) - return -1; - if (*p > *q) - return 1; - return 0; -} - -static unsigned ilog10(unsigned long ul) { - int n = 0; - - while (ul > 0) { - n++; - ul /= 10; - } - - return n; -} - -static int show_cgroup_one_by_path(const char *path, const char *prefix, unsigned n_columns, bool more, bool kernel_threads) { - char *fn; - FILE *f; - size_t n = 0, n_allocated = 0; - pid_t *pids = NULL; - char *p; - pid_t pid, biggest = 0; - int r; - - if (n_columns <= 0) - n_columns = columns(); - - if (!prefix) - prefix = ""; - - if ((r = cg_fix_path(path, &p)) < 0) - return r; - - r = asprintf(&fn, "%s/cgroup.procs", p); - free(p); - - if (r < 0) - return -ENOMEM; - - f = fopen(fn, "re"); - free(fn); - - if (!f) - return -errno; - - while ((r = cg_read_pid(f, &pid)) > 0) { - - if (!kernel_threads && is_kernel_thread(pid) > 0) - continue; - - if (n >= n_allocated) { - pid_t *npids; - - n_allocated = MAX(16U, n*2U); - - if (!(npids = realloc(pids, sizeof(pid_t) * n_allocated))) { - r = -ENOMEM; - goto finish; - } - - pids = npids; - } - - assert(n < n_allocated); - pids[n++] = pid; - - if (pid > biggest) - biggest = pid; - } - - if (r < 0) - goto finish; - - if (n > 0) { - unsigned i, m; - - /* Filter duplicates */ - m = 0; - for (i = 0; i < n; i++) { - unsigned j; - - for (j = i+1; j < n; j++) - if (pids[i] == pids[j]) - break; - - if (j >= n) - pids[m++] = pids[i]; - } - n = m; - - /* And sort */ - qsort(pids, n, sizeof(pid_t), compare); - - if (n_columns > 8) - n_columns -= 8; - else - n_columns = 20; - - for (i = 0; i < n; i++) { - char *t = NULL; - - get_process_cmdline(pids[i], n_columns, true, &t); - - printf("%s%s %*lu %s\n", - prefix, - (more || i < n-1) ? "\342\224\234" : "\342\224\224", - (int) ilog10(biggest), - (unsigned long) pids[i], - strna(t)); - - free(t); - } - } - - r = 0; - -finish: - free(pids); - - if (f) - fclose(f); - - return r; -} - -int show_cgroup_by_path(const char *path, const char *prefix, unsigned n_columns, bool kernel_threads) { - DIR *d; - char *last = NULL; - char *p1 = NULL, *p2 = NULL, *fn = NULL, *gn = NULL; - bool shown_pids = false; - int r; - - if (n_columns <= 0) - n_columns = columns(); - - if (!prefix) - prefix = ""; - - if ((r = cg_fix_path(path, &fn)) < 0) - return r; - - if (!(d = opendir(fn))) { - free(fn); - return -errno; - } - - while ((r = cg_read_subgroup(d, &gn)) > 0) { - - if (!shown_pids) { - show_cgroup_one_by_path(path, prefix, n_columns, true, kernel_threads); - shown_pids = true; - } - - if (last) { - printf("%s\342\224\234 %s\n", prefix, file_name_from_path(last)); - - if (!p1) - if (!(p1 = strappend(prefix, "\342\224\202 "))) { - r = -ENOMEM; - goto finish; - } - - show_cgroup_by_path(last, p1, n_columns-2, kernel_threads); - - free(last); - last = NULL; - } - - r = asprintf(&last, "%s/%s", fn, gn); - free(gn); - - if (r < 0) { - r = -ENOMEM; - goto finish; - } - } - - if (r < 0) - goto finish; - - if (!shown_pids) - show_cgroup_one_by_path(path, prefix, n_columns, !!last, kernel_threads); - - if (last) { - printf("%s\342\224\224 %s\n", prefix, file_name_from_path(last)); - - if (!p2) - if (!(p2 = strappend(prefix, " "))) { - r = -ENOMEM; - goto finish; - } - - show_cgroup_by_path(last, p2, n_columns-2, kernel_threads); - } - - r = 0; - -finish: - free(p1); - free(p2); - free(last); - free(fn); - - closedir(d); - - return r; -} - -int show_cgroup(const char *controller, const char *path, const char *prefix, unsigned n_columns, bool kernel_threads) { - char *p; - int r; - - assert(controller); - assert(path); - - r = cg_get_path(controller, path, NULL, &p); - if (r < 0) - return r; - - r = show_cgroup_by_path(p, prefix, n_columns, kernel_threads); - free(p); - - return r; -} |