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-rw-r--r--man/systemctl.xml33
-rw-r--r--src/systemctl/systemctl.c303
2 files changed, 317 insertions, 19 deletions
diff --git a/man/systemctl.xml b/man/systemctl.xml
index 97bc47ce24..1bd4af3386 100644
--- a/man/systemctl.xml
+++ b/man/systemctl.xml
@@ -173,6 +173,14 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>.
</varlistentry>
<varlistentry>
+ <term><option>--show-types</option></term>
+
+ <listitem>
+ <para>When showing sockets, show the type of the socket.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
<term><option>--irreversible</option></term>
<listitem>
@@ -479,6 +487,31 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>.
<para>This is the default command.</para>
</listitem>
</varlistentry>
+
+ <varlistentry>
+ <term><command>list-sockets</command></term>
+
+ <listitem>
+ <para>List socket units ordered by the listening address. Produces output
+ similar to
+ <programlisting>
+LISTEN UNIT ACTIVATES
+/dev/initctl systemd-initctl.socket systemd-initctl.service
+...
+[::]:22 sshd.socket sshd.service
+kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service
+
+5 sockets listed.
+ </programlisting>
+ Note: because the addresses might contains spaces, this output
+ is not suitable for programatic consumption.
+ </para>
+
+ <para>See also the options <option>--show-types</option>,
+ <option>--all</option>, and <option>--failed</option>.</para>
+ </listitem>
+ </varlistentry>
+
<varlistentry>
<term><command>start <replaceable>NAME</replaceable>...</command></term>
diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
index 1c7edd5a58..12dce3c001 100644
--- a/src/systemctl/systemctl.c
+++ b/src/systemctl/systemctl.c
@@ -80,6 +80,7 @@ static bool arg_no_pager = false;
static bool arg_no_wtmp = false;
static bool arg_no_wall = false;
static bool arg_no_reload = false;
+static bool arg_show_types = false;
static bool arg_ignore_inhibitors = false;
static bool arg_dry = false;
static bool arg_quiet = false;
@@ -429,7 +430,7 @@ static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
static int get_unit_list(DBusConnection *bus, DBusMessage **reply,
struct unit_info **unit_infos, unsigned *c) {
DBusMessageIter iter, sub;
- unsigned n_units = 0;
+ size_t size = 0;
int r;
assert(bus);
@@ -458,47 +459,300 @@ static int get_unit_list(DBusConnection *bus, DBusMessage **reply,
dbus_message_iter_recurse(&iter, &sub);
while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
- struct unit_info *u;
+ if (!GREEDY_REALLOC(*unit_infos, size, *c + 1))
+ return log_oom();
- if (*c >= n_units) {
- struct unit_info *w;
+ bus_parse_unit_info(&sub, *unit_infos + *c);
+ (*c)++;
- n_units = MAX(2 * *c, 16u);
- w = realloc(*unit_infos, sizeof(struct unit_info) * n_units);
- if (!w)
- return log_oom();
+ dbus_message_iter_next(&sub);
+ }
+
+ return 0;
+}
+
+static int list_units(DBusConnection *bus, char **args) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ _cleanup_free_ struct unit_info *unit_infos = NULL;
+ unsigned c = 0;
+ int r;
+
+ pager_open_if_enabled();
+
+ r = get_unit_list(bus, &reply, &unit_infos, &c);
+ if (r < 0)
+ return r;
+
+ qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
+
+ output_units_list(unit_infos, c);
+
+ return 0;
+}
+
+static int get_triggered_units(DBusConnection *bus, const char* unit_path,
+ char*** triggered)
+{
+ const char *interface = "org.freedesktop.systemd1.Unit",
+ *triggers_property = "Triggers";
+ DBusMessage _cleanup_dbus_message_unref_ *reply = NULL;
+ DBusMessageIter iter, sub;
+ int r;
+
+ r = bus_method_call_with_reply(bus,
+ "org.freedesktop.systemd1",
+ unit_path,
+ "org.freedesktop.DBus.Properties",
+ "Get",
+ &reply,
+ NULL,
+ DBUS_TYPE_STRING, &interface,
+ DBUS_TYPE_STRING, &triggers_property,
+ DBUS_TYPE_INVALID);
+ if (r < 0)
+ return r;
+
+ if (!dbus_message_iter_init(reply, &iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
+ log_error("Failed to parse reply.");
+ return -EBADMSG;
+ }
+
+ dbus_message_iter_recurse(&iter, &sub);
+ dbus_message_iter_recurse(&sub, &iter);
+ sub = iter;
+
+ while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
+ const char *unit;
+
+ if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
+ log_error("Failed to parse reply.");
+ return -EBADMSG;
+ }
+
+ dbus_message_iter_get_basic(&sub, &unit);
+ r = strv_extend(triggered, unit);
+ if (r < 0)
+ return r;
+
+ dbus_message_iter_next(&sub);
+ }
+
+ return 0;
+}
+
+static int get_listening(DBusConnection *bus, const char* unit_path,
+ char*** listen, unsigned *c)
+{
+ const char *interface = "org.freedesktop.systemd1.Socket",
+ *listen_property = "Listen";
+ DBusMessage _cleanup_dbus_message_unref_ *reply = NULL;
+ DBusMessageIter iter, sub;
+ int r;
+
+ r = bus_method_call_with_reply(bus,
+ "org.freedesktop.systemd1",
+ unit_path,
+ "org.freedesktop.DBus.Properties",
+ "Get",
+ &reply,
+ NULL,
+ DBUS_TYPE_STRING, &interface,
+ DBUS_TYPE_STRING, &listen_property,
+ DBUS_TYPE_INVALID);
+ if (r < 0)
+ return r;
+
+ if (!dbus_message_iter_init(reply, &iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
+ log_error("Failed to parse reply.");
+ return -EBADMSG;
+ }
+
+ dbus_message_iter_recurse(&iter, &sub);
+ dbus_message_iter_recurse(&sub, &iter);
+ sub = iter;
+
+ while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
+ DBusMessageIter sub2;
+ const char *type, *path;
- *unit_infos = w;
+ if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
+ log_error("Failed to parse reply.");
+ return -EBADMSG;
}
- u = *unit_infos + *c;
+ dbus_message_iter_recurse(&sub, &sub2);
+
+ if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
+ bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0) {
+ r = strv_extend(listen, type);
+ if (r < 0)
+ return r;
- bus_parse_unit_info(&sub, u);
+ r = strv_extend(listen, path);
+ if (r < 0)
+ return r;
+
+ (*c) ++;
+ }
dbus_message_iter_next(&sub);
- (*c)++;
}
- if (*c > 0)
- qsort(*unit_infos, *c, sizeof(struct unit_info), compare_unit_info);
+ return 0;
+}
+
+struct socket_info {
+ const char* id;
+
+ char* type;
+ char* path;
+
+ /* Note: triggered is a list here, although it almost certainly
+ * will always be one unit. Nevertheless, dbus API allows for multiple
+ * values, so let's follow that.*/
+ char** triggered;
+
+ /* The strv above is shared. free is set only in the first one. */
+ bool own_triggered;
+};
+
+static int socket_info_compare(struct socket_info *a, struct socket_info *b) {
+ int o = strcmp(a->path, b->path);
+ if (o == 0)
+ o = strcmp(a->type, b->type);
+ return o;
+}
+
+static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
+ struct socket_info *s;
+ unsigned pathlen = sizeof("LISTEN") - 1,
+ typelen = (sizeof("TYPE") - 1) * arg_show_types,
+ socklen = sizeof("UNIT") - 1,
+ servlen = sizeof("ACTIVATES") - 1;
+ const char *on, *off;
+
+ for (s = socket_infos; s < socket_infos + cs; s++) {
+ char **a;
+ unsigned tmp = 0;
+
+ socklen = MAX(socklen, strlen(s->id));
+ if (arg_show_types)
+ typelen = MAX(typelen, strlen(s->type));
+ pathlen = MAX(pathlen, strlen(s->path));
+
+ STRV_FOREACH(a, s->triggered)
+ tmp += strlen(*a) + 2*(a != s->triggered);
+ servlen = MAX(servlen, tmp);
+ }
+
+ if (cs) {
+ printf("%-*s %-*.*s%-*s %s\n",
+ pathlen, "LISTEN",
+ typelen + arg_show_types, typelen + arg_show_types, "TYPE ",
+ socklen, "UNIT",
+ "ACTIVATES");
+
+ for (s = socket_infos; s < socket_infos + cs; s++) {
+ char **a;
+
+ if (arg_show_types)
+ printf("%-*s %-*s %-*s",
+ pathlen, s->path, typelen, s->type, socklen, s->id);
+ else
+ printf("%-*s %-*s",
+ pathlen, s->path, socklen, s->id);
+ STRV_FOREACH(a, s->triggered)
+ printf("%s %s",
+ a == s->triggered ? "" : ",", *a);
+ printf("\n");
+ }
+
+ on = ansi_highlight(true);
+ off = ansi_highlight(false);
+ printf("\n");
+ } else {
+ on = ansi_highlight_red(true);
+ off = ansi_highlight_red(false);
+ }
+
+ printf("%s%u sockets listed.%s\n", on, cs, off);
+ if (!arg_all)
+ printf("Pass --all to see loaded but inactive sockets, too.\n");
return 0;
}
-static int list_units(DBusConnection *bus, char **args) {
+static int list_sockets(DBusConnection *bus, char **args) {
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
_cleanup_free_ struct unit_info *unit_infos = NULL;
- unsigned c = 0;
+ struct socket_info *socket_infos = NULL;
+ const struct unit_info *u;
+ struct socket_info *s;
+ unsigned cu = 0, cs = 0;
+ size_t size = 0;
int r;
pager_open_if_enabled();
- r = get_unit_list(bus, &reply, &unit_infos, &c);
+ r = get_unit_list(bus, &reply, &unit_infos, &cu);
if (r < 0)
return r;
- if (c > 0)
- output_units_list(unit_infos, c);
+ for (u = unit_infos; u < unit_infos + cu; u++) {
+ const char *dot;
+ char _cleanup_strv_free_ **listen = NULL, **triggered = NULL;
+ unsigned c = 0, i;
+
+ if (!output_show_unit(u))
+ continue;
+
+ if ((dot = strrchr(u->id, '.')) && !streq(dot+1, "socket"))
+ continue;
+
+ r = get_triggered_units(bus, u->unit_path, &triggered);
+ if (r < 0)
+ goto cleanup;
+
+ r = get_listening(bus, u->unit_path, &listen, &c);
+ if (r < 0)
+ goto cleanup;
+
+ if (!GREEDY_REALLOC(socket_infos, size, cs + c)) {
+ r = log_oom();
+ goto cleanup;
+ }
+
+ for (i = 0; i < c; i++)
+ socket_infos[cs + i] = (struct socket_info) {
+ .id = u->id,
+ .type = listen[i*2],
+ .path = listen[i*2 + 1],
+ .triggered = triggered,
+ .own_triggered = i==0,
+ };
+
+ /* from this point on we will cleanup those socket_infos */
+ cs += c;
+ free(listen);
+ listen = triggered = NULL; /* avoid cleanup */
+ }
+
+ qsort(socket_infos, cs, sizeof(struct socket_info),
+ (__compar_fn_t) socket_info_compare);
+
+ output_sockets_list(socket_infos, cs);
+
+ cleanup:
+ assert(cs == 0 || socket_infos);
+ for (s = socket_infos; s < socket_infos + cs; s++) {
+ free(s->type);
+ free(s->path);
+ if (s->own_triggered)
+ strv_free(s->triggered);
+ }
+ free(socket_infos);
return 0;
}
@@ -3280,6 +3534,8 @@ static int show_all(const char* verb, DBusConnection *bus, bool show_properties,
if (r < 0)
return r;
+ qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
+
for (u = unit_infos; u < unit_infos + c; u++) {
char _cleanup_free_ *p = NULL;
@@ -4237,6 +4493,8 @@ static int systemctl_help(void) {
" --full Don't ellipsize unit names on output\n"
" --fail When queueing a new job, fail if conflicting jobs are\n"
" pending\n"
+ " --irreversible Create jobs which cannot be implicitly cancelled\n"
+ " --show-types When showing sockets, explictly show their type\n"
" --ignore-dependencies\n"
" When queueing a new job, ignore all its dependencies\n"
" -i --ignore-inhibitors\n"
@@ -4432,6 +4690,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
enum {
ARG_FAIL = 0x100,
+ ARG_SHOW_TYPES,
ARG_IRREVERSIBLE,
ARG_IGNORE_DEPENDENCIES,
ARG_VERSION,
@@ -4458,6 +4717,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
{ "type", required_argument, NULL, 't' },
{ "property", required_argument, NULL, 'p' },
{ "all", no_argument, NULL, 'a' },
+ { "show-types", no_argument, NULL, ARG_SHOW_TYPES },
{ "failed", no_argument, NULL, ARG_FAILED },
{ "full", no_argument, NULL, ARG_FULL },
{ "fail", no_argument, NULL, ARG_FAIL },
@@ -4579,6 +4839,10 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
arg_all = true;
break;
+ case ARG_SHOW_TYPES:
+ arg_show_types = true;
+ break;
+
case ARG_FAIL:
arg_job_mode = "fail";
break;
@@ -5280,6 +5544,7 @@ static int systemctl_main(DBusConnection *bus, int argc, char *argv[], DBusError
} verbs[] = {
{ "list-units", LESS, 1, list_units },
{ "list-unit-files", EQUAL, 1, list_unit_files },
+ { "list-sockets", LESS, 1, list_sockets },
{ "list-jobs", EQUAL, 1, list_jobs },
{ "clear-jobs", EQUAL, 1, daemon_reload },
{ "load", MORE, 2, load_unit },
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-24 06:28:56 +0000