cgls: don't show empty cgroups by default

[elogind.git] / src / cgls / cgls.c

diff --git a/src/cgls/cgls.c b/src/cgls/cgls.c
index fd02d52c23f0fd6e7e9b35c6a0acb604de355e0e..4bec6a827e115e4f9c8e2118fb9faaa32df7c10d 100644 (file)
--- a/src/cgls/cgls.c
+++ b/src/cgls/cgls.c
@@ -31,16 +31,20 @@
 #include "log.h"
 #include "util.h"
 #include "pager.h"
 #include "log.h"
 #include "util.h"
 #include "pager.h"

+#include "build.h"

 
 static bool arg_no_pager = false;
 static bool arg_kernel_threads = false;
 
 static bool arg_no_pager = false;
 static bool arg_kernel_threads = false;

+static bool arg_all = false;

 
 static void help(void) {
 
         printf("%s [OPTIONS...] [CGROUP...]\n\n"
                "Recursively show control group contents.\n\n"
                "  -h --help           Show this help\n"
 
 static void help(void) {
 
         printf("%s [OPTIONS...] [CGROUP...]\n\n"
                "Recursively show control group contents.\n\n"
                "  -h --help           Show this help\n"

+               "     --version        Show package version\n"

                "     --no-pager       Do not pipe output into a pager\n"
                "     --no-pager       Do not pipe output into a pager\n"

+               "  -a --all            Show all groups, including empty\n"

                "  -k                  Include kernel threads in output\n",
                program_invocation_short_name);
 }
                "  -k                  Include kernel threads in output\n",
                program_invocation_short_name);
 }


@@ -48,12 +52,15 @@ static void help(void) {
 static int parse_argv(int argc, char *argv[]) {
 
         enum {
 static int parse_argv(int argc, char *argv[]) {
 
         enum {

-                ARG_NO_PAGER = 0x100
+                ARG_NO_PAGER = 0x100,
+                ARG_VERSION

         };
 
         static const struct option options[] = {
                 { "help",      no_argument,       NULL, 'h'          },
         };
 
         static const struct option options[] = {
                 { "help",      no_argument,       NULL, 'h'          },

+                { "version",   no_argument,       NULL, ARG_VERSION  },

                 { "no-pager",  no_argument,       NULL, ARG_NO_PAGER },
                 { "no-pager",  no_argument,       NULL, ARG_NO_PAGER },

+                { "all",       no_argument,       NULL, 'a'          },

                 { NULL,        0,                 NULL, 0            }
         };
 
                 { NULL,        0,                 NULL, 0            }
         };
 


@@ -62,7 +69,7 @@ static int parse_argv(int argc, char *argv[]) {
         assert(argc >= 1);
         assert(argv);
 
         assert(argc >= 1);
         assert(argv);
 

-        while ((c = getopt_long(argc, argv, "hk", options, NULL)) >= 0) {
+        while ((c = getopt_long(argc, argv, "hka", options, NULL)) >= 0) {

 
                 switch (c) {
 
 
                 switch (c) {
 


@@ -70,10 +77,20 @@ static int parse_argv(int argc, char *argv[]) {
                         help();
                         return 0;
 
                         help();
                         return 0;
 

+                case ARG_VERSION:
+                        puts(PACKAGE_STRING);
+                        puts(DISTRIBUTION);
+                        puts(SYSTEMD_FEATURES);
+                        return 0;
+

                 case ARG_NO_PAGER:
                         arg_no_pager = true;
                         break;
 
                 case ARG_NO_PAGER:
                         arg_no_pager = true;
                         break;
 

+                case 'a':
+                        arg_all = true;
+                        break;
+

                 case 'k':
                         arg_kernel_threads = true;
                         break;
                 case 'k':
                         arg_kernel_threads = true;
                         break;


@@ -114,7 +131,7 @@ int main(int argc, char *argv[]) {
                         int q;
                         printf("%s:\n", argv[i]);
 
                         int q;
                         printf("%s:\n", argv[i]);
 

-                        q = show_cgroup_by_path(argv[i], NULL, 0, arg_kernel_threads);
+                        q = show_cgroup_by_path(argv[i], NULL, 0, arg_kernel_threads, arg_all);

                         if (q < 0)
                                 r = q;
                 }
                         if (q < 0)
                                 r = q;
                 }


@@ -130,7 +147,7 @@ int main(int argc, char *argv[]) {
 
                 if (path_startswith(p, "/sys/fs/cgroup")) {
                         printf("Working Directory %s:\n", p);
 
                 if (path_startswith(p, "/sys/fs/cgroup")) {
                         printf("Working Directory %s:\n", p);

-                        r = show_cgroup_by_path(p, NULL, 0, arg_kernel_threads);
+                        r = show_cgroup_by_path(p, NULL, 0, arg_kernel_threads, arg_all);

                 } else {
                         char *root = NULL;
                         const char *t = NULL;
                 } else {
                         char *root = NULL;
                         const char *t = NULL;


@@ -145,7 +162,7 @@ int main(int argc, char *argv[]) {
                                 t = root[0] ? root : "/";
                         }
 
                                 t = root[0] ? root : "/";
                         }
 

-                        r = show_cgroup(SYSTEMD_CGROUP_CONTROLLER, t, NULL, 0, arg_kernel_threads);
+                        r = show_cgroup(SYSTEMD_CGROUP_CONTROLLER, t, NULL, 0, arg_kernel_threads, arg_all);

                         free(root);
                 }
 
                         free(root);
                 }