sysctl: accept multiple passed configuration files

[elogind.git] / src / cgls.c

diff --git a/src/cgls.c b/src/cgls.c
index 93617ddc2fa6b77ad0df97c2bea4e57b1da416b1..d5417f9505e68de6a3f9d85757b847c1f2d11a48 100644 (file)
--- a/src/cgls.c
+++ b/src/cgls.c
@@ -30,20 +30,31 @@
 #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;
@@ -51,7 +62,7 @@ static int parse_argv(int argc, char *argv[]) {
         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) {
 
@@ -59,6 +70,14 @@ static int parse_argv(int argc, char *argv[]) {
                         help();
                         return 0;
 
+                case ARG_NO_PAGER:
+                        arg_no_pager = true;
+                        break;
+
+                case 'k':
+                        arg_kernel_threads = true;
+                        break;
+
                 case '?':
                         return -EINVAL;
 
@@ -77,13 +96,17 @@ int main(int argc, char *argv[]) {
         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 = EXIT_SUCCESS;
                 goto finish;
         }
 
+        if (!arg_no_pager)
+                pager_open();
+
         if (optind < argc) {
                 unsigned i;
 
@@ -91,23 +114,40 @@ int main(int argc, char *argv[]) {
                         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, "/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);
         }
@@ -118,6 +158,7 @@ int main(int argc, char *argv[]) {
         retval = EXIT_SUCCESS;
 
 finish:
+        pager_close();
 
         return retval;
 }