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authorLennart Poettering <lennart@poettering.net>2010-07-08 21:01:42 +0200
committerLennart Poettering <lennart@poettering.net>2010-07-08 21:01:42 +0200
commitfa776d8e962da9d90459e2f3e86a2a0c6366ee12 (patch)
treec75cc3cb9343a53d55741983c317ee8d414f8f0a /src/systemd-cgls.c
parentab35fb1bc68625c891a19a66473a9c40ca12e69d (diff)
cgls: beef up control group dumping and introduce cgls tool
Diffstat (limited to 'src/systemd-cgls.c')
-rw-r--r--src/systemd-cgls.c121
1 files changed, 121 insertions, 0 deletions
diff --git a/src/systemd-cgls.c b/src/systemd-cgls.c
new file mode 100644
index 0000000000..6614f0fd25
--- /dev/null
+++ b/src/systemd-cgls.c
@@ -0,0 +1,121 @@
+/*-*- Mode: C; c-basic-offset: 8 -*-*/
+
+/***
+ 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 <limits.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <getopt.h>
+#include <string.h>
+
+#include "cgroup-show.h"
+#include "log.h"
+#include "util.h"
+
+static void help(void) {
+
+ printf("%s [OPTIONS...] [CGROUP...]\n\n"
+ "Recursively show control group contents.\n\n"
+ " -h --help Show this help\n",
+ program_invocation_short_name);
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { NULL, 0, NULL, 0 }
+ };
+
+ int c;
+
+ assert(argc >= 1);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
+
+ switch (c) {
+
+ case 'h':
+ help();
+ return 0;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ log_error("Unknown option code %c", c);
+ return -EINVAL;
+ }
+ }
+
+ return 1;
+}
+
+int main(int argc, char *argv[]) {
+ int r = 0, retval = 1;
+
+ log_parse_environment();
+
+ if ((r = parse_argv(argc, argv)) < 0)
+ goto finish;
+ else if (r == 0) {
+ retval = 0;
+ goto finish;
+ }
+
+ if (optind < argc) {
+ unsigned i;
+
+ for (i = (unsigned) optind; i < (unsigned) argc; i++) {
+ int q;
+ printf("%s:\n", argv[i]);
+
+ if ((q = show_cgroup_recursive(argv[i], NULL, 0)) < 0)
+ r = q;
+ }
+
+ } else {
+ char *p;
+
+ if (!(p = get_current_dir_name())) {
+ log_error("Cannot determine current working directory: %m");
+ goto finish;
+ }
+
+ if (path_startswith(p, "/cgroup")) {
+ printf("Working Directory %s:\n", p);
+ r = show_cgroup_recursive(p, NULL, 0);
+ } else
+ r = show_cgroup_recursive("", NULL, 0);
+
+ free(p);
+ }
+
+ if (r < 0)
+ log_error("Failed to list cgroup tree: %s", strerror(-r));
+
+ retval = 0;
+
+finish:
+
+ return retval;
+}