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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2013-04-30 00:35:38 -0400
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2013-05-01 10:15:25 -0400
commit38158b920e772ea3a7cc9dfcf705666ce3aa5ce3 (patch)
tree4106a88cbf6f55cb41694c6e7d85dd08f3108089 /src/cgls/cgls.c
parent57277cbe40bc9a1421c810cee39c606f11d39008 (diff)
cgls: add --machine/-M
cg_get_machine_path is modified to include the escaped machine name + ".nspawn" if the machine argument is nonnull.
Diffstat (limited to 'src/cgls/cgls.c')
-rw-r--r--src/cgls/cgls.c46
1 files changed, 32 insertions, 14 deletions
diff --git a/src/cgls/cgls.c b/src/cgls/cgls.c
index 8ddd733dfd..ef3e5672ab 100644
--- a/src/cgls/cgls.c
+++ b/src/cgls/cgls.c
@@ -39,6 +39,7 @@ static bool arg_no_pager = false;
static bool arg_kernel_threads = false;
static bool arg_all = false;
static int arg_full = -1;
+static char* arg_machine = NULL;
static void help(void) {
@@ -49,7 +50,8 @@ static void help(void) {
" --no-pager Do not pipe output into a pager\n"
" -a --all Show all groups, including empty\n"
" --full Do not ellipsize output\n"
- " -k Include kernel threads in output\n",
+ " -k Include kernel threads in output\n"
+ " -M --machine Show container\n",
program_invocation_short_name);
}
@@ -67,6 +69,7 @@ static int parse_argv(int argc, char *argv[]) {
{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
{ "all", no_argument, NULL, 'a' },
{ "full", no_argument, NULL, ARG_FULL },
+ { "machine", required_argument, NULL, 'M' },
{ NULL, 0, NULL, 0 }
};
@@ -75,7 +78,7 @@ static int parse_argv(int argc, char *argv[]) {
assert(argc >= 1);
assert(argv);
- while ((c = getopt_long(argc, argv, "hka", options, NULL)) >= 0) {
+ while ((c = getopt_long(argc, argv, "hkaM:", options, NULL)) >= 0) {
switch (c) {
@@ -104,6 +107,10 @@ static int parse_argv(int argc, char *argv[]) {
arg_kernel_threads = true;
break;
+ case 'M':
+ arg_machine = optarg;
+ break;
+
case '?':
return -EINVAL;
@@ -119,6 +126,7 @@ static int parse_argv(int argc, char *argv[]) {
int main(int argc, char *argv[]) {
int r = 0, retval = EXIT_FAILURE;
int output_flags;
+ char _cleanup_free_ *root = NULL;
log_parse_environment();
log_open();
@@ -144,13 +152,20 @@ int main(int argc, char *argv[]) {
(arg_full > 0) * OUTPUT_FULL_WIDTH;
if (optind < argc) {
- unsigned i;
+ int i;
- for (i = (unsigned) optind; i < (unsigned) argc; i++) {
+ for (i = optind; i < argc; i++) {
int q;
printf("%s:\n", argv[i]);
- q = show_cgroup_by_path(argv[i], NULL, 0,
+ if (arg_machine)
+ root = strjoin("machine/", arg_machine, "/", argv[i], NULL);
+ else
+ root = strdup(argv[i]);
+ if (!root)
+ return log_oom();
+
+ q = show_cgroup_by_path(root, NULL, 0,
arg_kernel_threads, output_flags);
if (q < 0)
r = q;
@@ -165,16 +180,18 @@ int main(int argc, char *argv[]) {
goto finish;
}
- if (path_startswith(p, "/sys/fs/cgroup")) {
+ if (path_startswith(p, "/sys/fs/cgroup") && !arg_machine) {
printf("Working Directory %s:\n", p);
r = show_cgroup_by_path(p, NULL, 0,
arg_kernel_threads, output_flags);
} else {
- _cleanup_free_ char *root = NULL;
-
- r = cg_get_root_path(&root);
+ if (arg_machine)
+ r = cg_get_machine_path(arg_machine, &root);
+ else
+ r = cg_get_root_path(&root);
if (r < 0) {
- log_error("Failed to get root path: %s", strerror(-r));
+ log_error("Failed to get %s path: %s",
+ arg_machine ? "machine" : "root", strerror(-r));
goto finish;
}
@@ -183,10 +200,11 @@ int main(int argc, char *argv[]) {
}
}
- if (r < 0)
- log_error("Failed to list cgroup tree: %s", strerror(-r));
-
- retval = EXIT_SUCCESS;
+ if (r < 0) {
+ log_error("Failed to list cgroup tree %s: %s", root, strerror(-r));
+ retval = EXIT_FAILURE;
+ } else
+ retval = EXIT_SUCCESS;
finish:
pager_close();