From 2ae5cd6539253e03e065f3ecbf55179527bb5ea2 Mon Sep 17 00:00:00 2001 From: Scott Anderson Date: Tue, 11 Jul 2017 19:03:09 +1200 Subject: Moved session/ into backend/ --- session/logind.c | 398 ------------------------------------------------------- 1 file changed, 398 deletions(-) delete mode 100644 session/logind.c (limited to 'session/logind.c') diff --git a/session/logind.c b/session/logind.c deleted file mode 100644 index 6744215a..00000000 --- a/session/logind.c +++ /dev/null @@ -1,398 +0,0 @@ -#define _POSIX_C_SOURCE 200809L -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -enum { DRM_MAJOR = 226 }; - -const struct session_impl session_logind; - -struct logind_session { - struct wlr_session base; - - sd_bus *bus; - struct wl_event_source *event; - - char *id; - char *path; -}; - -static int logind_take_device(struct wlr_session *base, const char *path) { - struct logind_session *session = wl_container_of(base, session, base); - - int ret; - int fd = -1; - sd_bus_message *msg = NULL; - sd_bus_error error = SD_BUS_ERROR_NULL; - - struct stat st; - if (stat(path, &st) < 0) { - wlr_log(L_ERROR, "Failed to stat '%s'", path); - return -1; - } - - ret = sd_bus_call_method(session->bus, "org.freedesktop.login1", - session->path, "org.freedesktop.login1.Session", "TakeDevice", - &error, &msg, "uu", major(st.st_rdev), minor(st.st_rdev)); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to take device '%s': %s", path, error.message); - goto error; - } - - int paused = 0; - ret = sd_bus_message_read(msg, "hb", &fd, &paused); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to parse D-Bus response for '%s': %s", - path, strerror(-ret)); - goto error; - } - - // The original fd seems to be closed when the message is freed - // so we just clone it. - fd = fcntl(fd, F_DUPFD_CLOEXEC, 0); - if (fd == -1) { - wlr_log(L_ERROR, "Failed to clone file descriptor for '%s': %s", - path, strerror(errno)); - goto error; - } - - if (major(st.st_rdev) == DRM_MAJOR) { - session->base.drm_fd = fd; - } - -error: - sd_bus_error_free(&error); - sd_bus_message_unref(msg); - return fd; -} - -static void logind_release_device(struct wlr_session *base, int fd) { - struct logind_session *session = wl_container_of(base, session, base); - - int ret; - sd_bus_message *msg = NULL; - sd_bus_error error = SD_BUS_ERROR_NULL; - - struct stat st; - if (fstat(fd, &st) < 0) { - wlr_log(L_ERROR, "Failed to stat device '%d'", fd); - return; - } - - ret = sd_bus_call_method(session->bus, "org.freedesktop.login1", - session->path, "org.freedesktop.login1.Session", "ReleaseDevice", - &error, &msg, "uu", major(st.st_rdev), minor(st.st_rdev)); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to release device '%d'", fd); - } - - if (major(st.st_rdev) == DRM_MAJOR) { - session->base.drm_fd = -1; - } - - sd_bus_error_free(&error); - sd_bus_message_unref(msg); -} - -static bool logind_change_vt(struct wlr_session *base, unsigned vt) { - struct logind_session *session = wl_container_of(base, session, base); - - int ret; - sd_bus_message *msg = NULL; - sd_bus_error error = SD_BUS_ERROR_NULL; - - ret = sd_bus_call_method(session->bus, "org.freedesktop.login1", - "/org/freedesktop/login1/seat/self", "org.freedesktop.login1.Seat", "SwitchTo", - &error, &msg, "u", (uint32_t)vt); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to change to vt '%d'", vt); - } - - sd_bus_error_free(&error); - sd_bus_message_unref(msg); - return ret >= 0; -} - -static bool find_sesion_path(struct logind_session *session) { - int ret; - sd_bus_message *msg = NULL; - sd_bus_error error = SD_BUS_ERROR_NULL; - - ret = sd_bus_call_method(session->bus, "org.freedesktop.login1", - "/org/freedesktop/login1", "org.freedesktop.login1.Manager", - "GetSession", &error, &msg, "s", session->id); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to get session path: %s", strerror(-ret)); - goto out; - } - - const char *path; - - ret = sd_bus_message_read(msg, "o", &path); - if (ret < 0) { - wlr_log(L_ERROR, "Could not parse session path: %s", strerror(-ret)); - goto out; - } - - session->path = strdup(path); - -out: - sd_bus_error_free(&error); - sd_bus_message_unref(msg); - - return ret >= 0; -} - -static bool session_activate(struct logind_session *session) { - int ret; - sd_bus_message *msg = NULL; - sd_bus_error error = SD_BUS_ERROR_NULL; - - ret = sd_bus_call_method(session->bus, "org.freedesktop.login1", - session->path, "org.freedesktop.login1.Session", "Activate", - &error, &msg, ""); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to activate session"); - } - - sd_bus_error_free(&error); - sd_bus_message_unref(msg); - return ret >= 0; -} - -static bool take_control(struct logind_session *session) { - int ret; - sd_bus_message *msg = NULL; - sd_bus_error error = SD_BUS_ERROR_NULL; - - ret = sd_bus_call_method(session->bus, "org.freedesktop.login1", - session->path, "org.freedesktop.login1.Session", "TakeControl", - &error, &msg, "b", false); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to take control of session"); - } - - sd_bus_error_free(&error); - sd_bus_message_unref(msg); - return ret >= 0; -} - -static void release_control(struct logind_session *session) { - int ret; - sd_bus_message *msg = NULL; - sd_bus_error error = SD_BUS_ERROR_NULL; - - ret = sd_bus_call_method(session->bus, "org.freedesktop.login1", - session->path, "org.freedesktop.login1.Session", "ReleaseControl", - &error, &msg, ""); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to release control of session"); - } - - sd_bus_error_free(&error); - sd_bus_message_unref(msg); -} - -static void logind_session_finish(struct wlr_session *base) { - struct logind_session *session = wl_container_of(base, session, base); - - release_control(session); - - wl_event_source_remove(session->event); - sd_bus_unref(session->bus); - free(session->id); - free(session->path); - free(session); -} - -static int session_removed(sd_bus_message *msg, void *userdata, sd_bus_error *ret_error) { - wlr_log(L_INFO, "SessionRemoved signal received"); - return 0; -} - -static int pause_device(sd_bus_message *msg, void *userdata, sd_bus_error *ret_error) { - struct logind_session *session = userdata; - int ret; - - uint32_t major, minor; - const char *type; - ret = sd_bus_message_read(msg, "uus", &major, &minor, &type); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to parse D-Bus response for PauseDevice: %s", - strerror(-ret)); - goto error; - } - - if (major == DRM_MAJOR) { - session->base.active = false; - wl_signal_emit(&session->base.session_signal, session); - } - - if (strcmp(type, "pause") == 0) { - ret = sd_bus_call_method(session->bus, "org.freedesktop.login1", - session->path, "org.freedesktop.login1.Session", "PauseDeviceComplete", - ret_error, &msg, "uu", major, minor); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to send PauseDeviceComplete signal: %s", - strerror(-ret)); - } - } - -error: - return 0; -} - -static int resume_device(sd_bus_message *msg, void *userdata, sd_bus_error *ret_error) { - struct logind_session *session = userdata; - int ret; - - int fd; - uint32_t major, minor; - ret = sd_bus_message_read(msg, "uuh", &major, &minor, &fd); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to parse D-Bus response for ResumeDevice: %s", - strerror(-ret)); - goto error; - } - - if (major == DRM_MAJOR) { - dup2(fd, session->base.drm_fd); - session->base.active = true; - wl_signal_emit(&session->base.session_signal, session); - } - -error: - return 0; -} - -static bool add_signal_matches(struct logind_session *session) { - int ret; - - char str[256]; - const char *fmt = "type='signal'," - "sender='org.freedesktop.login1'," - "interface='org.freedesktop.login1.%s'," - "member='%s'," - "path='%s'"; - - snprintf(str, sizeof(str), fmt, "Manager", "SesssionRemoved", "/org/freedesktop/login1"); - ret = sd_bus_add_match(session->bus, NULL, str, session_removed, session); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to add D-Bus match: %s", strerror(-ret)); - return false; - } - - snprintf(str, sizeof(str), fmt, "Session", "PauseDevice", session->path); - ret = sd_bus_add_match(session->bus, NULL, str, pause_device, session); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to add D-Bus match: %s", strerror(-ret)); - return false; - } - - snprintf(str, sizeof(str), fmt, "Session", "ResumeDevice", session->path); - ret = sd_bus_add_match(session->bus, NULL, str, resume_device, session); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to add D-Bus match: %s", strerror(-ret)); - return false; - } - - return true; -} - -static int dbus_event(int fd, uint32_t mask, void *data) { - sd_bus *bus = data; - while (sd_bus_process(bus, NULL) > 0); - return 1; -} - -static struct wlr_session *logind_session_start(struct wl_display *disp) { - int ret; - struct logind_session *session = calloc(1, sizeof(*session)); - if (!session) { - wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno)); - return NULL; - } - - ret = sd_pid_get_session(getpid(), &session->id); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to get session id: %s", strerror(-ret)); - goto error; - } - - ret = sd_session_get_vt(session->id, &session->base.vtnr); - if (ret < 0) { - wlr_log(L_ERROR, "Session not running in virtual terminal"); - goto error; - } - - char *seat; - ret = sd_session_get_seat(session->id, &seat); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to get seat id: %s", strerror(-ret)); - goto error; - } - snprintf(session->base.seat, sizeof(session->base.seat), "%s", seat); - free(seat); - - ret = sd_bus_default_system(&session->bus); - if (ret < 0) { - wlr_log(L_ERROR, "Failed to open D-Bus connection: %s", strerror(-ret)); - goto error; - } - - if (!find_sesion_path(session)) { - sd_bus_unref(session->bus); - goto error; - } - - if (!add_signal_matches(session)) { - goto error_bus; - } - - struct wl_event_loop *event_loop = wl_display_get_event_loop(disp); - session->event = wl_event_loop_add_fd(event_loop, sd_bus_get_fd(session->bus), - WL_EVENT_READABLE, dbus_event, session->bus); - - if (!session_activate(session)) { - goto error_bus; - } - - if (!take_control(session)) { - goto error_bus; - } - - wlr_log(L_INFO, "Successfully loaded logind session"); - - session->base.drm_fd = -1; - session->base.impl = &session_logind; - session->base.active = true; - wl_signal_init(&session->base.session_signal); - return &session->base; - -error_bus: - sd_bus_unref(session->bus); - free(session->path); - -error: - free(session->id); - return NULL; -} - -const struct session_impl session_logind = { - .start = logind_session_start, - .finish = logind_session_finish, - .open = logind_take_device, - .close = logind_release_device, - .change_vt = logind_change_vt, -}; -- cgit v1.2.3