From 47985d2dc56a6af469ac9375e7548136765aff16 Mon Sep 17 00:00:00 2001 From: Scott Anderson Date: Thu, 14 Jun 2018 20:46:16 +1200 Subject: [PATCH 1/2] Multiseat fixes --- backend/libinput/backend.c | 4 +-- backend/session/direct.c | 60 +++++++++++++++++++++-------------- backend/session/logind.c | 5 +++ backend/session/session.c | 4 +-- include/wlr/backend/session.h | 6 +++- 5 files changed, 50 insertions(+), 29 deletions(-) diff --git a/backend/libinput/backend.c b/backend/libinput/backend.c index f4d54c97..1dde5854 100644 --- a/backend/libinput/backend.c +++ b/backend/libinput/backend.c @@ -55,8 +55,8 @@ static bool backend_start(struct wlr_backend *_backend) { return false; } - // TODO: Let user customize seat used - if (libinput_udev_assign_seat(backend->libinput_context, "seat0") != 0) { + if (libinput_udev_assign_seat(backend->libinput_context, + backend->session->seat) != 0) { wlr_log(L_ERROR, "Failed to assign libinput seat"); return false; } diff --git a/backend/session/direct.c b/backend/session/direct.c index 13a26d99..c1a59647 100644 --- a/backend/session/direct.c +++ b/backend/session/direct.c @@ -1,5 +1,6 @@ #define _POSIX_C_SOURCE 200809L #include +#include #include #include #include @@ -76,30 +77,39 @@ static void direct_session_close(struct wlr_session *base, int fd) { static bool direct_change_vt(struct wlr_session *base, unsigned vt) { struct direct_session *session = wl_container_of(base, session, base); + + // Only seat0 has VTs associated with it + if (strcmp(session->base.seat, "seat0") == 0) { + return true; + } + return ioctl(session->tty_fd, VT_ACTIVATE, (int)vt) == 0; } static void direct_session_destroy(struct wlr_session *base) { struct direct_session *session = wl_container_of(base, session, base); - struct vt_mode mode = { - .mode = VT_AUTO, - }; - errno = 0; + if (strcmp(session->base.seat, "seat0") == 0) { + struct vt_mode mode = { + .mode = VT_AUTO, + }; + errno = 0; - ioctl(session->tty_fd, KDSKBMODE, session->old_kbmode); - ioctl(session->tty_fd, KDSETMODE, KD_TEXT); - ioctl(session->tty_fd, VT_SETMODE, &mode); + ioctl(session->tty_fd, KDSKBMODE, session->old_kbmode); + ioctl(session->tty_fd, KDSETMODE, KD_TEXT); + ioctl(session->tty_fd, VT_SETMODE, &mode); - if (errno) { - wlr_log(L_ERROR, "Failed to restore tty"); + if (errno) { + wlr_log(L_ERROR, "Failed to restore tty"); + } + + wl_event_source_remove(session->vt_source); + close(session->tty_fd); } direct_ipc_finish(session->sock, session->child); close(session->sock); - wl_event_source_remove(session->vt_source); - close(session->tty_fd); free(session); } @@ -138,19 +148,19 @@ static int vt_handler(int signo, void *data) { } static bool setup_tty(struct direct_session *session, struct wl_display *display) { - int fd = dup(STDIN_FILENO); + int fd = open("/dev/tty", O_RDWR); if (fd == -1) { - wlr_log_errno(L_ERROR, "Cannot open tty"); + wlr_log_errno(L_ERROR, "Cannot open /dev/tty"); return false; } - struct stat st; - if (fstat(fd, &st) == -1 || major(st.st_rdev) != TTY_MAJOR || minor(st.st_rdev) == 0) { - wlr_log(L_ERROR, "Not running from a virtual terminal"); + struct vt_stat vt_stat; + if (ioctl(fd, VT_GETSTATE, &vt_stat)) { + wlr_log_errno(L_ERROR, "Could not get current tty number"); goto error; } - int tty = minor(st.st_rdev); + int tty = vt_stat.v_active; int ret, kd_mode, old_kbmode; ret = ioctl(fd, KDGETMODE, &kd_mode); @@ -224,20 +234,24 @@ static struct wlr_session *direct_session_create(struct wl_display *disp) { goto error_session; } - if (!setup_tty(session, disp)) { - goto error_ipc; - } - - // XXX: Is it okay to trust the environment like this? const char *seat = getenv("XDG_SEAT"); if (!seat) { seat = "seat0"; } - wlr_log(L_INFO, "Successfully loaded direct session"); + if (strcmp(seat, "seat0") == 0) { + if (!setup_tty(session, disp)) { + goto error_ipc; + } + } else { + session->base.vtnr = 0; + session->tty_fd = -1; + } snprintf(session->base.seat, sizeof(session->base.seat), "%s", seat); session->base.impl = &session_direct; + + wlr_log(L_INFO, "Successfully loaded direct session"); return &session->base; error_ipc: diff --git a/backend/session/logind.c b/backend/session/logind.c index f0ac1e93..3a3cc57d 100644 --- a/backend/session/logind.c +++ b/backend/session/logind.c @@ -109,6 +109,11 @@ static void logind_release_device(struct wlr_session *base, int fd) { static bool logind_change_vt(struct wlr_session *base, unsigned vt) { struct logind_session *session = wl_container_of(base, session, base); + // Only seat0 has VTs associated with it + if (strcmp(session->base.seat, "seat0") != 0) { + return true; + } + int ret; sd_bus_message *msg = NULL; sd_bus_error error = SD_BUS_ERROR_NULL; diff --git a/backend/session/session.c b/backend/session/session.c index 2d5d9776..026040fd 100644 --- a/backend/session/session.c +++ b/backend/session/session.c @@ -19,9 +19,7 @@ extern const struct session_impl session_logind; extern const struct session_impl session_direct; static const struct session_impl *impls[] = { -#ifdef WLR_HAS_SYSTEMD - &session_logind, -#elif defined(WLR_HAS_ELOGIND) +#if defined(WLR_HAS_SYSTEMD) || defined(WLR_HAS_ELOGIND) &session_logind, #endif &session_direct, diff --git a/include/wlr/backend/session.h b/include/wlr/backend/session.h index 4d04b363..1cf41939 100644 --- a/include/wlr/backend/session.h +++ b/include/wlr/backend/session.h @@ -25,8 +25,12 @@ struct wlr_session { struct wl_signal session_signal; bool active; + /* + * 0 if virtual terminals are not supported + * i.e. seat != "seat0" + */ unsigned vtnr; - char seat[8]; + char seat[256]; struct udev *udev; struct udev_monitor *mon; From 964e0a50beabe03d84f042209fc019909b631e05 Mon Sep 17 00:00:00 2001 From: Scott Anderson Date: Thu, 14 Jun 2018 21:02:32 +1200 Subject: [PATCH 2/2] Check for seat0 properly --- backend/session/direct.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/backend/session/direct.c b/backend/session/direct.c index c1a59647..7fa7d05b 100644 --- a/backend/session/direct.c +++ b/backend/session/direct.c @@ -79,7 +79,7 @@ static bool direct_change_vt(struct wlr_session *base, unsigned vt) { struct direct_session *session = wl_container_of(base, session, base); // Only seat0 has VTs associated with it - if (strcmp(session->base.seat, "seat0") == 0) { + if (strcmp(session->base.seat, "seat0") != 0) { return true; }