From a4c279f87451186b8beb1b8cc21c7cad561ecf4b Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Fri, 8 Jul 2011 21:39:10 +0200 Subject: [PATCH] loginctl: add various introspection functions --- Makefile.am | 9 +- TODO | 6 + src/dbus-common.c | 134 +++++++ src/dbus-common.h | 2 + src/loginctl.c | 941 +++++++++++++++++++++++++++++++++++++++++++++- src/systemctl.c | 127 +------ 6 files changed, 1093 insertions(+), 126 deletions(-) diff --git a/Makefile.am b/Makefile.am index 78e5caf3..5cb4d294 100644 --- a/Makefile.am +++ b/Makefile.am @@ -1136,15 +1136,18 @@ systemd_loginctl_SOURCES = \ src/dbus-common.c \ src/cgroup-show.c \ src/cgroup-util.c \ - src/pager.c + src/pager.c \ + src/sysfs-show.c systemd_loginctl_CFLAGS = \ $(AM_CFLAGS) \ - $(DBUS_CFLAGS) + $(DBUS_CFLAGS) \ + $(UDEV_CFLAGS) systemd_loginctl_LDADD = \ libsystemd-basic.la \ - $(DBUS_LIBS) + $(DBUS_LIBS) \ + $(UDEV_LIBS) systemd_notify_SOURCES = \ src/notify.c \ diff --git a/TODO b/TODO index 6ce42401..f8d9146b 100644 --- a/TODO +++ b/TODO @@ -20,6 +20,12 @@ F15 External: Features: +* Fix nspawn to not read-only mount /selinux on the host system + +* make sure people don't leave processes around after ExecStartPre= + +* make sure systemd-ask-password-wall does not shutdown systemd-ask-password-console too early + * add loginctl, i.e. a systemctl for logind introspection * support presets diff --git a/src/dbus-common.c b/src/dbus-common.c index 4b9b457f..43729f03 100644 --- a/src/dbus-common.c +++ b/src/dbus-common.c @@ -837,3 +837,137 @@ int bus_iter_get_basic_and_next(DBusMessageIter *iter, int type, void *data, boo return 0; } + +int generic_print_property(const char *name, DBusMessageIter *iter, bool all) { + assert(name); + assert(iter); + + switch (dbus_message_iter_get_arg_type(iter)) { + + case DBUS_TYPE_STRING: { + const char *s; + dbus_message_iter_get_basic(iter, &s); + + if (all || !isempty(s)) + printf("%s=%s\n", name, s); + + return 1; + } + + case DBUS_TYPE_BOOLEAN: { + dbus_bool_t b; + + dbus_message_iter_get_basic(iter, &b); + printf("%s=%s\n", name, yes_no(b)); + + return 1; + } + + case DBUS_TYPE_UINT64: { + uint64_t u; + dbus_message_iter_get_basic(iter, &u); + + /* Yes, heuristics! But we can change this check + * should it turn out to not be sufficient */ + + if (endswith(name, "Timestamp")) { + char timestamp[FORMAT_TIMESTAMP_MAX], *t; + + t = format_timestamp(timestamp, sizeof(timestamp), u); + if (t || all) + printf("%s=%s\n", name, strempty(t)); + + } else if (strstr(name, "USec")) { + char timespan[FORMAT_TIMESPAN_MAX]; + + printf("%s=%s\n", name, format_timespan(timespan, sizeof(timespan), u)); + } else + printf("%s=%llu\n", name, (unsigned long long) u); + + return 1; + } + + case DBUS_TYPE_UINT32: { + uint32_t u; + dbus_message_iter_get_basic(iter, &u); + + if (strstr(name, "UMask") || strstr(name, "Mode")) + printf("%s=%04o\n", name, u); + else + printf("%s=%u\n", name, (unsigned) u); + + return 1; + } + + case DBUS_TYPE_INT32: { + int32_t i; + dbus_message_iter_get_basic(iter, &i); + + printf("%s=%i\n", name, (int) i); + return 1; + } + + case DBUS_TYPE_DOUBLE: { + double d; + dbus_message_iter_get_basic(iter, &d); + + printf("%s=%g\n", name, d); + return 1; + } + + case DBUS_TYPE_ARRAY: + + if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) { + DBusMessageIter sub; + bool space = false; + + dbus_message_iter_recurse(iter, &sub); + if (all || + dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { + printf("%s=", name); + + while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { + const char *s; + + assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING); + dbus_message_iter_get_basic(&sub, &s); + printf("%s%s", space ? " " : "", s); + + space = true; + dbus_message_iter_next(&sub); + } + + puts(""); + } + + return 1; + + } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_BYTE) { + DBusMessageIter sub; + + dbus_message_iter_recurse(iter, &sub); + if (all || + dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { + printf("%s=", name); + + while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { + uint8_t u; + + assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_BYTE); + dbus_message_iter_get_basic(&sub, &u); + printf("%02x", u); + + dbus_message_iter_next(&sub); + } + + puts(""); + } + + return 1; + } + + break; + } + + return 0; +} diff --git a/src/dbus-common.h b/src/dbus-common.h index e3a3ecbe..aab65639 100644 --- a/src/dbus-common.h +++ b/src/dbus-common.h @@ -165,4 +165,6 @@ int bus_append_strv_iter(DBusMessageIter *iter, char **l); int bus_iter_get_basic_and_next(DBusMessageIter *iter, int type, void *data, bool next); +int generic_print_property(const char *name, DBusMessageIter *iter, bool all); + #endif diff --git a/src/loginctl.c b/src/loginctl.c index 022f69e7..12787ce9 100644 --- a/src/loginctl.c +++ b/src/loginctl.c @@ -24,6 +24,7 @@ #include #include #include +#include #include "log.h" #include "util.h" @@ -31,8 +32,15 @@ #include "pager.h" #include "dbus-common.h" #include "build.h" +#include "strv.h" +#include "cgroup-show.h" +#include "sysfs-show.h" +static char **arg_property = NULL; +static bool arg_all = false; static bool arg_no_pager = false; +static const char *arg_kill_who = NULL; +static int arg_signal = SIGTERM; static enum transport { TRANSPORT_NORMAL, TRANSPORT_SSH, @@ -323,20 +331,885 @@ finish: return r; } +typedef struct SessionStatusInfo { + const char *id; + uid_t uid; + const char *name; + usec_t timestamp; + const char *control_group; + int vtnr; + const char *seat; + const char *tty; + const char *display; + bool remote; + const char *remote_host; + const char *remote_user; + const char *service; + pid_t leader; + const char *type; + bool active; +} SessionStatusInfo; + +typedef struct UserStatusInfo { + uid_t uid; + const char *name; + usec_t timestamp; + const char *control_group; + const char *state; + char **sessions; + const char *display; +} UserStatusInfo; + +typedef struct SeatStatusInfo { + const char *id; + const char *active_session; + char **sessions; +} SeatStatusInfo; + +static void print_session_status_info(SessionStatusInfo *i) { + char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1; + char since2[FORMAT_TIMESTAMP_MAX], *s2; + assert(i); + + printf("%s - ", strna(i->id)); + + if (i->name) + printf("%s (%u)\n", i->name, (unsigned) i->uid); + else + printf("%u\n", (unsigned) i->uid); + + s1 = format_timestamp_pretty(since1, sizeof(since1), i->timestamp); + s2 = format_timestamp(since2, sizeof(since2), i->timestamp); + + if (s1) + printf("\t Since: %s; %s\n", s2, s1); + else if (s2) + printf("\t Since: %s\n", s2); + + if (i->leader > 0) { + char *t = NULL; + + printf("\t Leader: %u", (unsigned) i->leader); + + get_process_name(i->leader, &t); + if (t) { + printf(" (%s)", t); + free(t); + } + + printf("\n"); + } + + if (i->seat) { + printf("\t Seat: %s", i->seat); + + if (i->vtnr > 0) + printf("; vc%i", i->vtnr); + + printf("\n"); + } + + if (i->tty) + printf("\t TTY: %s\n", i->tty); + else if (i->display) + printf("\t Display: %s\n", i->display); + + if (i->remote_host && i->remote_user) + printf("\t Remote: %s@%s\n", i->remote_user, i->remote_host); + else if (i->remote_host) + printf("\t Remote: %s\n", i->remote_host); + else if (i->remote_user) + printf("\t Remote: user %s\n", i->remote_user); + else if (i->remote) + printf("\t Remote: Yes\n"); + + if (i->service) { + printf("\t Service: %s", i->service); + + if (i->type) + printf("; type %s", i->type); + + printf("\n"); + } else if (i->type) + printf("\t Type: %s\n", i->type); + + printf("\t Active: %s\n", yes_no(i->active)); + + if (i->control_group) { + unsigned c; + + printf("\t CGroup: %s\n", i->control_group); + + if (arg_transport != TRANSPORT_SSH) { + c = columns(); + if (c > 18) + c -= 18; + else + c = 0; + + show_cgroup_by_path(i->control_group, "\t\t ", c); + } + } +} + +static void print_user_status_info(UserStatusInfo *i) { + char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1; + char since2[FORMAT_TIMESTAMP_MAX], *s2; + assert(i); + + if (i->name) + printf("%s (%u)\n", i->name, (unsigned) i->uid); + else + printf("%u\n", (unsigned) i->uid); + + s1 = format_timestamp_pretty(since1, sizeof(since1), i->timestamp); + s2 = format_timestamp(since2, sizeof(since2), i->timestamp); + + if (s1) + printf("\t Since: %s; %s\n", s2, s1); + else if (s2) + printf("\t Since: %s\n", s2); + + if (!isempty(i->state)) + printf("\t State: %s\n", i->state); + + if (!strv_isempty(i->sessions)) { + char **l; + printf("\tSessions:"); + + STRV_FOREACH(l, i->sessions) { + if (streq_ptr(*l, i->display)) + printf(" *%s", *l); + else + printf(" %s", *l); + } + + printf("\n"); + } + + if (i->control_group) { + unsigned c; + + printf("\t CGroup: %s\n", i->control_group); + + if (arg_transport != TRANSPORT_SSH) { + c = columns(); + if (c > 18) + c -= 18; + else + c = 0; + + show_cgroup_by_path(i->control_group, "\t\t ", c); + } + } +} + +static void print_seat_status_info(SeatStatusInfo *i) { + assert(i); + + printf("%s\n", strna(i->id)); + + if (!strv_isempty(i->sessions)) { + char **l; + printf("\tSessions:"); + + STRV_FOREACH(l, i->sessions) { + if (streq_ptr(*l, i->active_session)) + printf(" *%s", *l); + else + printf(" %s", *l); + } + + printf("\n"); + } + + if (arg_transport != TRANSPORT_SSH) { + unsigned c; + + c = columns(); + if (c > 18) + c -= 18; + else + c = 0; + + printf("\t Devices:\n"); + + + show_sysfs(i->id, "\t\t ", c); + } +} + +static int status_property_session(const char *name, DBusMessageIter *iter, SessionStatusInfo *i) { + assert(name); + assert(iter); + assert(i); + + switch (dbus_message_iter_get_arg_type(iter)) { + + case DBUS_TYPE_STRING: { + const char *s; + + dbus_message_iter_get_basic(iter, &s); + + if (!isempty(s)) { + if (streq(name, "Id")) + i->id = s; + else if (streq(name, "Name")) + i->name = s; + else if (streq(name, "ControlGroupPath")) + i->control_group = s; + else if (streq(name, "TTY")) + i->tty = s; + else if (streq(name, "Display")) + i->display = s; + else if (streq(name, "RemoteHost")) + i->remote_host = s; + else if (streq(name, "RemoteUser")) + i->remote_user = s; + else if (streq(name, "Service")) + i->service = s; + else if (streq(name, "Type")) + i->type = s; + } + break; + } + + case DBUS_TYPE_UINT32: { + uint32_t u; + + dbus_message_iter_get_basic(iter, &u); + + if (streq(name, "VTNr")) + i->vtnr = (int) u; + else if (streq(name, "Leader")) + i->leader = (pid_t) u; + + break; + } + + case DBUS_TYPE_BOOLEAN: { + dbus_bool_t b; + + dbus_message_iter_get_basic(iter, &b); + + if (streq(name, "Remote")) + i->remote = b; + else if (streq(name, "Active")) + i->active = b; + + break; + } + + case DBUS_TYPE_UINT64: { + uint64_t u; + + dbus_message_iter_get_basic(iter, &u); + + if (streq(name, "Timestamp")) + i->timestamp = (usec_t) u; + + break; + } + + case DBUS_TYPE_STRUCT: { + DBusMessageIter sub; + + dbus_message_iter_recurse(iter, &sub); + + if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "User")) { + uint32_t u; + + dbus_message_iter_get_basic(&sub, &u); + i->uid = (uid_t) u; + + } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Seat")) { + const char *s; + + dbus_message_iter_get_basic(&sub, &s); + + if (!isempty(s)) + i->seat = s; + } + + break; + } + } + + return 0; +} + +static int status_property_user(const char *name, DBusMessageIter *iter, UserStatusInfo *i) { + assert(name); + assert(iter); + assert(i); + + switch (dbus_message_iter_get_arg_type(iter)) { + + case DBUS_TYPE_STRING: { + const char *s; + + dbus_message_iter_get_basic(iter, &s); + + if (!isempty(s)) { + if (streq(name, "Name")) + i->name = s; + else if (streq(name, "ControlGroupPath")) + i->control_group = s; + else if (streq(name, "State")) + i->state = s; + } + break; + } + + case DBUS_TYPE_UINT32: { + uint32_t u; + + dbus_message_iter_get_basic(iter, &u); + + if (streq(name, "UID")) + i->uid = (uid_t) u; + + break; + } + + case DBUS_TYPE_UINT64: { + uint64_t u; + + dbus_message_iter_get_basic(iter, &u); + + if (streq(name, "Timestamp")) + i->timestamp = (usec_t) u; + + break; + } + + case DBUS_TYPE_STRUCT: { + DBusMessageIter sub; + + dbus_message_iter_recurse(iter, &sub); + + if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Display")) { + const char *s; + + dbus_message_iter_get_basic(&sub, &s); + + if (!isempty(s)) + i->display = s; + } + + break; + } + + case DBUS_TYPE_ARRAY: { + + if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Sessions")) { + DBusMessageIter sub, sub2; + + dbus_message_iter_recurse(iter, &sub); + while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) { + const char *id; + const char *path; + + dbus_message_iter_recurse(&sub, &sub2); + + if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) >= 0 && + bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &path, false) >= 0) { + char **l; + + l = strv_append(i->sessions, id); + if (!l) + return -ENOMEM; + + strv_free(i->sessions); + i->sessions = l; + } + + dbus_message_iter_next(&sub); + } + + return 0; + } + } + } + + return 0; +} + +static int status_property_seat(const char *name, DBusMessageIter *iter, SeatStatusInfo *i) { + assert(name); + assert(iter); + assert(i); + + switch (dbus_message_iter_get_arg_type(iter)) { + + case DBUS_TYPE_STRING: { + const char *s; + + dbus_message_iter_get_basic(iter, &s); + + if (!isempty(s)) { + if (streq(name, "Id")) + i->id = s; + } + break; + } + + case DBUS_TYPE_STRUCT: { + DBusMessageIter sub; + + dbus_message_iter_recurse(iter, &sub); + + if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "ActiveSession")) { + const char *s; + + dbus_message_iter_get_basic(&sub, &s); + + if (!isempty(s)) + i->active_session = s; + } + + break; + } + + case DBUS_TYPE_ARRAY: { + + if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Sessions")) { + DBusMessageIter sub, sub2; + + dbus_message_iter_recurse(iter, &sub); + while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) { + const char *id; + const char *path; + + dbus_message_iter_recurse(&sub, &sub2); + + if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) >= 0 && + bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &path, false) >= 0) { + char **l; + + l = strv_append(i->sessions, id); + if (!l) + return -ENOMEM; + + strv_free(i->sessions); + i->sessions = l; + } + + dbus_message_iter_next(&sub); + } + + return 0; + } + } + } + + return 0; +} + +static int print_property(const char *name, DBusMessageIter *iter) { + assert(name); + assert(iter); + + if (arg_property && !strv_find(arg_property, name)) + return 0; + + switch (dbus_message_iter_get_arg_type(iter)) { + + case DBUS_TYPE_STRUCT: { + DBusMessageIter sub; + + dbus_message_iter_recurse(iter, &sub); + + if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && + (streq(name, "Display") || streq(name, "ActiveSession"))) { + const char *s; + + dbus_message_iter_get_basic(&sub, &s); + + if (arg_all || !isempty(s)) + printf("%s=%s\n", name, s); + return 0; + } + break; + } + + case DBUS_TYPE_ARRAY: + + if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Sessions")) { + DBusMessageIter sub, sub2; + bool found = false; + + dbus_message_iter_recurse(iter, &sub); + while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) { + const char *id; + const char *path; + + dbus_message_iter_recurse(&sub, &sub2); + + if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) >= 0 && + bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &path, false) >= 0) { + if (found) + printf(" %s", id); + else { + printf("%s=%s", name, id); + found = true; + } + } + + dbus_message_iter_next(&sub); + } + + if (!found && arg_all) + printf("%s=\n", name); + else if (found) + printf("\n"); + + return 0; + } + + break; + } + + if (generic_print_property(name, iter, arg_all) > 0) + return 0; + + if (arg_all) + printf("%s=[unprintable]\n", name); + + return 0; +} + +static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) { + DBusMessage *m = NULL, *reply = NULL; + const char *interface = ""; + int r; + DBusError error; + DBusMessageIter iter, sub, sub2, sub3; + SessionStatusInfo session_info; + UserStatusInfo user_info; + SeatStatusInfo seat_info; + + assert(bus); + assert(path); + assert(new_line); + + zero(session_info); + zero(user_info); + zero(seat_info); + + dbus_error_init(&error); + + m = dbus_message_new_method_call( + "org.freedesktop.login1", + path, + "org.freedesktop.DBus.Properties", + "GetAll"); + if (!m) { + log_error("Could not allocate message."); + r = -ENOMEM; + goto finish; + } + + if (!dbus_message_append_args(m, + DBUS_TYPE_STRING, &interface, + DBUS_TYPE_INVALID)) { + log_error("Could not append arguments to message."); + r = -ENOMEM; + goto finish; + } + + reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error); + if (!reply) { + log_error("Failed to issue method call: %s", bus_error_message(&error)); + r = -EIO; + goto finish; + } + + if (!dbus_message_iter_init(reply, &iter) || + dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || + dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) { + log_error("Failed to parse reply."); + r = -EIO; + goto finish; + } + + dbus_message_iter_recurse(&iter, &sub); + + if (*new_line) + printf("\n"); + + *new_line = true; + + while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { + const char *name; + + if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) { + log_error("Failed to parse reply."); + r = -EIO; + goto finish; + } + + dbus_message_iter_recurse(&sub, &sub2); + + if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) { + log_error("Failed to parse reply."); + r = -EIO; + goto finish; + } + + if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) { + log_error("Failed to parse reply."); + r = -EIO; + goto finish; + } + + dbus_message_iter_recurse(&sub2, &sub3); + + if (show_properties) + r = print_property(name, &sub3); + else if (strstr(verb, "session")) + r = status_property_session(name, &sub3, &session_info); + else if (strstr(verb, "user")) + r = status_property_user(name, &sub3, &user_info); + else + r = status_property_seat(name, &sub3, &seat_info); + + if (r < 0) { + log_error("Failed to parse reply."); + r = -EIO; + goto finish; + } + + dbus_message_iter_next(&sub); + } + + if (!show_properties) { + if (strstr(verb, "session")) + print_session_status_info(&session_info); + else if (strstr(verb, "user")) + print_user_status_info(&user_info); + else + print_seat_status_info(&seat_info); + } + + strv_free(seat_info.sessions); + strv_free(user_info.sessions); + + r = 0; + +finish: + if (m) + dbus_message_unref(m); + + if (reply) + dbus_message_unref(reply); + + dbus_error_free(&error); + + return r; +} + +static int show(DBusConnection *bus, char **args, unsigned n) { + DBusMessage *m = NULL, *reply = NULL; + int r, ret = 0; + DBusError error; + unsigned i; + bool show_properties, new_line = false; + + assert(bus); + assert(args); + + dbus_error_init(&error); + + show_properties = !strstr(args[0], "status"); + + if (show_properties) + pager_open_if_enabled(); + + if (show_properties && n <= 1) { + /* If not argument is specified inspect the manager + * itself */ + + ret = show_one(args[0], bus, "/org/freedesktop/login1", show_properties, &new_line); + goto finish; + } + + for (i = 1; i < n; i++) { + const char *path = NULL; + + if (strstr(args[0], "session")) { + + m = dbus_message_new_method_call( + "org.freedesktop.login1", + "/org/freedesktop/login1", + "org.freedesktop.login1.Manager", + "GetSession"); + if (!m) { + log_error("Could not allocate message."); + ret = -ENOMEM; + goto finish; + } + + if (!dbus_message_append_args(m, + DBUS_TYPE_STRING, &args[i], + DBUS_TYPE_INVALID)) { + log_error("Could not append arguments to message."); + ret = -ENOMEM; + goto finish; + } + + } else if (strstr(args[0], "user")) { + uint32_t uid; + + if (safe_atou(args[i], &uid) < 0) { + struct passwd *pw; + + pw = getpwnam(args[i]); + if (!pw) { + log_error("User %s unknown.", args[i]); + ret = -ENOENT; + goto finish; + } + + uid = pw->pw_uid; + } + + m = dbus_message_new_method_call( + "org.freedesktop.login1", + "/org/freedesktop/login1", + "org.freedesktop.login1.Manager", + "GetUser"); + if (!m) { + log_error("Could not allocate message."); + ret = -ENOMEM; + goto finish; + } + + if (!dbus_message_append_args(m, + DBUS_TYPE_UINT32, &uid, + DBUS_TYPE_INVALID)) { + log_error("Could not append arguments to message."); + ret = -ENOMEM; + goto finish; + } + } else { + + m = dbus_message_new_method_call( + "org.freedesktop.login1", + "/org/freedesktop/login1", + "org.freedesktop.login1.Manager", + "GetSeat"); + if (!m) { + log_error("Could not allocate message."); + ret = -ENOMEM; + goto finish; + } + + if (!dbus_message_append_args(m, + DBUS_TYPE_STRING, &args[i], + DBUS_TYPE_INVALID)) { + log_error("Could not append arguments to message."); + ret = -ENOMEM; + goto finish; + } + } + + reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error); + if (!reply) { + log_error("Failed to issue method call: %s", bus_error_message(&error)); + ret = -EIO; + goto finish; + } + + if (!dbus_message_get_args(reply, &error, + DBUS_TYPE_OBJECT_PATH, &path, + DBUS_TYPE_INVALID)) { + log_error("Failed to parse reply: %s", bus_error_message(&error)); + ret = -EIO; + goto finish; + } + + r = show_one(args[0], bus, path, show_properties, &new_line); + if (r != 0) + ret = r; + + dbus_message_unref(m); + dbus_message_unref(reply); + m = reply = NULL; + } + +finish: + if (m) + dbus_message_unref(m); + + if (reply) + dbus_message_unref(reply); + + dbus_error_free(&error); + + return ret; +} + +static int activate(DBusConnection *bus, char **args, unsigned n) { + return 0; +} + +static int kill_session(DBusConnection *bus, char **args, unsigned n) { + return 0; +} + +static int enable_linger(DBusConnection *bus, char **args, unsigned n) { + return 0; +} + +static int attach(DBusConnection *bus, char **args, unsigned n) { + return 0; +} + +static int flush_devices(DBusConnection *bus, char **args, unsigned n) { + return 0; +} + +static int terminate_seat(DBusConnection *bus, char **args, unsigned n) { + return 0; +} + static int help(void) { printf("%s [OPTIONS...] {COMMAND} ...\n\n" "Send control commands to or query the login manager.\n\n" " -h --help Show this help\n" " --version Show package version\n" - " -H --host=[user@]host\n" + " -p --property=NAME Show only properties by this name\n" + " -a --all Show all properties, including empty ones\n" + " --kill-who=WHO Who to send signal to\n" + " -s --signal=SIGNAL Which signal to send\n" + " -H --host=[USER@]HOST\n" " Show information for remote host\n" " -P --privileged Acquire privileges before execution\n" - " --no-pager Do not pipe output into a pager.\n" + " --no-pager Do not pipe output into a pager\n\n" "Commands:\n" " list-sessions List sessions\n" + " session-status [ID...] Show session status\n" + " show-session [ID...] Show property of one or more sessions\n" + " activate [ID] Activate a session\n" + " lock-session [ID...] Screen lock one or more sessions\n" + " terminate-session [ID...] Terminate one or more sessions\n" + " kill-session [ID...] Send signal to processes of a session\n" " list-users List users\n" - " list-seats List seats\n", + " user-status [USER...] Show user status\n" + " show-user [USER...] Show property of one or more users\n" + " enable-linger [USER...] Enable linger state of one or more users\n" + " disable-linger [USER...] Disable linger state of one or more users\n" + " terminate-user [USER...] Terminate all sessions of one or more users\n" + " kill-user [USER...] Send signal to processes of a user\n" + " list-seats List seats\n" + " seat-status [NAME...] Show seat status\n" + " show-seat [NAME...] Show property of one or more seats\n" + " attach [NAME] [DEVICE...] Attach one or more devices to a seat\n" + " flush-devices Flush all device associations\n" + " terminate-seat [NAME...] Terminate all sessions on one or more seats\n" + " kill-seat [NAME...] Send signal to processes of sessions on a seat\n", program_invocation_short_name); return 0; @@ -346,13 +1219,18 @@ static int parse_argv(int argc, char *argv[]) { enum { ARG_VERSION = 0x100, - ARG_NO_PAGER + ARG_NO_PAGER, + ARG_KILL_WHO }; static const struct option options[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, + { "property", required_argument, NULL, 'p' }, + { "all", no_argument, NULL, 'a' }, { "no-pager", no_argument, NULL, ARG_NO_PAGER }, + { "kill-who", required_argument, NULL, ARG_KILL_WHO }, + { "signal", required_argument, NULL, 's' }, { "host", required_argument, NULL, 'H' }, { "privileged",no_argument, NULL, 'P' }, { NULL, 0, NULL, 0 } @@ -363,7 +1241,7 @@ static int parse_argv(int argc, char *argv[]) { assert(argc >= 0); assert(argv); - while ((c = getopt_long(argc, argv, "hH:P", options, NULL)) >= 0) { + while ((c = getopt_long(argc, argv, "hp:as:H:P", options, NULL)) >= 0) { switch (c) { @@ -377,10 +1255,43 @@ static int parse_argv(int argc, char *argv[]) { puts(SYSTEMD_FEATURES); return 0; + case 'p': { + char **l; + + l = strv_append(arg_property, optarg); + if (!l) + return -ENOMEM; + + strv_free(arg_property); + arg_property = l; + + /* If the user asked for a particular + * property, show it to him, even if it is + * empty. */ + arg_all = true; + break; + } + + case 'a': + arg_all = true; + break; + case ARG_NO_PAGER: arg_no_pager = true; break; + case ARG_KILL_WHO: + arg_kill_who = optarg; + break; + + case 's': + arg_signal = signal_from_string_try_harder(optarg); + if (arg_signal < 0) { + log_error("Failed to parse signal string %s.", optarg); + return -EINVAL; + } + break; + case 'P': arg_transport = TRANSPORT_POLKIT; break; @@ -415,8 +1326,26 @@ static int loginctl_main(DBusConnection *bus, int argc, char *argv[], DBusError int (* const dispatch)(DBusConnection *bus, char **args, unsigned n); } verbs[] = { { "list-sessions", LESS, 1, list_sessions }, + { "session-status", MORE, 2, show }, + { "show-session", MORE, 2, show }, + { "activate", EQUAL, 2, activate }, + { "lock-session", MORE, 2, activate }, + { "terminate-session", MORE, 2, activate }, + { "kill-session", MORE, 2, kill_session }, { "list-users", EQUAL, 1, list_users }, + { "user-status", MORE, 2, show }, + { "show-user", MORE, 2, show }, + { "enable-linger", MORE, 2, enable_linger }, + { "disable-linger", MORE, 2, enable_linger }, + { "terminate-user", MORE, 2, enable_linger }, + { "kill-user", MORE, 2, kill_session }, { "list-seats", EQUAL, 1, list_seats }, + { "seat-status", MORE, 2, show }, + { "show-seat", MORE, 2, show }, + { "attach", MORE, 3, attach }, + { "flush-devices", EQUAL, 1, flush_devices }, + { "terminate-seat", MORE, 2, terminate_seat }, + { "kill-seat", MORE, 2, kill_session }, }; int left; @@ -525,6 +1454,8 @@ finish: dbus_error_free(&error); dbus_shutdown(); + strv_free(arg_property); + pager_close(); return retval; diff --git a/src/systemctl.c b/src/systemctl.c index c01a82c9..1735223e 100644 --- a/src/systemctl.c +++ b/src/systemctl.c @@ -2080,6 +2080,10 @@ static void print_status_info(UnitStatusInfo *i) { static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) { + assert(name); + assert(iter); + assert(i); + switch (dbus_message_iter_get_arg_type(iter)) { case DBUS_TYPE_STRING: { @@ -2087,7 +2091,7 @@ static int status_property(const char *name, DBusMessageIter *iter, UnitStatusIn dbus_message_iter_get_basic(iter, &s); - if (s[0]) { + if (!isempty(s)) { if (streq(name, "Id")) i->id = s; else if (streq(name, "LoadState")) @@ -2246,74 +2250,6 @@ static int print_property(const char *name, DBusMessageIter *iter) { switch (dbus_message_iter_get_arg_type(iter)) { - case DBUS_TYPE_STRING: { - const char *s; - dbus_message_iter_get_basic(iter, &s); - - if (arg_all || s[0]) - printf("%s=%s\n", name, s); - - return 0; - } - - case DBUS_TYPE_BOOLEAN: { - dbus_bool_t b; - dbus_message_iter_get_basic(iter, &b); - printf("%s=%s\n", name, yes_no(b)); - - return 0; - } - - case DBUS_TYPE_UINT64: { - uint64_t u; - dbus_message_iter_get_basic(iter, &u); - - /* Yes, heuristics! But we can change this check - * should it turn out to not be sufficient */ - - if (endswith(name, "Timestamp")) { - char timestamp[FORMAT_TIMESTAMP_MAX], *t; - - if ((t = format_timestamp(timestamp, sizeof(timestamp), u)) || arg_all) - printf("%s=%s\n", name, strempty(t)); - } else if (strstr(name, "USec")) { - char timespan[FORMAT_TIMESPAN_MAX]; - - printf("%s=%s\n", name, format_timespan(timespan, sizeof(timespan), u)); - } else - printf("%s=%llu\n", name, (unsigned long long) u); - - return 0; - } - - case DBUS_TYPE_UINT32: { - uint32_t u; - dbus_message_iter_get_basic(iter, &u); - - if (strstr(name, "UMask") || strstr(name, "Mode")) - printf("%s=%04o\n", name, u); - else - printf("%s=%u\n", name, (unsigned) u); - - return 0; - } - - case DBUS_TYPE_INT32: { - int32_t i; - dbus_message_iter_get_basic(iter, &i); - - printf("%s=%i\n", name, (int) i); - return 0; - } - - case DBUS_TYPE_DOUBLE: { - double d; - dbus_message_iter_get_basic(iter, &d); - - printf("%s=%g\n", name, d); - return 0; - } - case DBUS_TYPE_STRUCT: { DBusMessageIter sub; dbus_message_iter_recurse(iter, &sub); @@ -2345,55 +2281,7 @@ static int print_property(const char *name, DBusMessageIter *iter) { case DBUS_TYPE_ARRAY: - if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) { - DBusMessageIter sub; - bool space = false; - - dbus_message_iter_recurse(iter, &sub); - if (arg_all || - dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { - printf("%s=", name); - - while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { - const char *s; - - assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING); - dbus_message_iter_get_basic(&sub, &s); - printf("%s%s", space ? " " : "", s); - - space = true; - dbus_message_iter_next(&sub); - } - - puts(""); - } - - return 0; - - } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_BYTE) { - DBusMessageIter sub; - - dbus_message_iter_recurse(iter, &sub); - if (arg_all || - dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { - printf("%s=", name); - - while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { - uint8_t u; - - assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_BYTE); - dbus_message_iter_get_basic(&sub, &u); - printf("%02x", u); - - dbus_message_iter_next(&sub); - } - - puts(""); - } - - return 0; - - } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "EnvironmentFiles")) { + if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "EnvironmentFiles")) { DBusMessageIter sub, sub2; dbus_message_iter_recurse(iter, &sub); @@ -2498,6 +2386,9 @@ static int print_property(const char *name, DBusMessageIter *iter) { break; } + if (generic_print_property(name, iter, arg_all) > 0) + return 0; + if (arg_all) printf("%s=[unprintable]\n", name); -- 2.39.5