#include "cgroup-util.h"
#include "log.h"
#include "util.h"
+#include "pager.h"
+
+static bool arg_no_pager = false;
+static bool arg_kernel_threads = false;
static void help(void) {
printf("%s [OPTIONS...] [CGROUP...]\n\n"
"Recursively show control group contents.\n\n"
- " -h --help Show this help\n",
+ " -h --help Show this help\n"
+ " --no-pager Do not pipe output into a pager\n"
+ " -k Include kernel threads in output\n",
program_invocation_short_name);
}
static int parse_argv(int argc, char *argv[]) {
+ enum {
+ ARG_NO_PAGER = 0x100
+ };
+
static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { NULL, 0, NULL, 0 }
+ { "help", no_argument, NULL, 'h' },
+ { "no-pager", no_argument, NULL, ARG_NO_PAGER },
+ { NULL, 0, NULL, 0 }
};
int c;
assert(argc >= 1);
assert(argv);
- while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
+ while ((c = getopt_long(argc, argv, "hk", options, NULL)) >= 0) {
switch (c) {
help();
return 0;
+ case ARG_NO_PAGER:
+ arg_no_pager = true;
+ break;
+
+ case 'k':
+ arg_kernel_threads = true;
+ break;
+
case '?':
return -EINVAL;
}
int main(int argc, char *argv[]) {
- int r = 0, retval = 1;
+ int r = 0, retval = EXIT_FAILURE;
log_parse_environment();
log_open();
- if ((r = parse_argv(argc, argv)) < 0)
+ r = parse_argv(argc, argv);
+ if (r < 0)
goto finish;
else if (r == 0) {
- retval = 0;
+ retval = EXIT_SUCCESS;
goto finish;
}
+ if (!arg_no_pager)
+ pager_open();
+
if (optind < argc) {
unsigned i;
int q;
printf("%s:\n", argv[i]);
- if ((q = show_cgroup_by_path(argv[i], NULL, 0)) < 0)
+ q = show_cgroup_by_path(argv[i], NULL, 0, arg_kernel_threads);
+ if (q < 0)
r = q;
}
} else {
char *p;
- if (!(p = get_current_dir_name())) {
+ p = get_current_dir_name();
+ if (!p) {
log_error("Cannot determine current working directory: %m");
goto finish;
}
- if (path_startswith(p, "/cgroup")) {
+ if (path_startswith(p, "/sys/fs/cgroup")) {
printf("Working Directory %s:\n", p);
- r = show_cgroup_by_path(p, NULL, 0);
- } else
- r = show_cgroup(SYSTEMD_CGROUP_CONTROLLER, "/", NULL, 0);
+ r = show_cgroup_by_path(p, NULL, 0, arg_kernel_threads);
+ } else {
+ char *root = NULL;
+ const char *t = NULL;
+
+ r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, 1, &root);
+ if (r < 0)
+ t = "/";
+ else {
+ if (endswith(root, "/system"))
+ root[strlen(root)-7] = 0;
+
+ t = root[0] ? root : "/";
+ }
+
+ r = show_cgroup(SYSTEMD_CGROUP_CONTROLLER, t, NULL, 0, arg_kernel_threads);
+ free(root);
+ }
free(p);
}
if (r < 0)
log_error("Failed to list cgroup tree: %s", strerror(-r));
- retval = 0;
+ retval = EXIT_SUCCESS;
finish:
+ pager_close();
return retval;
}