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Diffstat (limited to 'backend/session/direct.c')
-rw-r--r--backend/session/direct.c291
1 files changed, 0 insertions, 291 deletions
diff --git a/backend/session/direct.c b/backend/session/direct.c
deleted file mode 100644
index b6d9f06a..00000000
--- a/backend/session/direct.c
+++ /dev/null
@@ -1,291 +0,0 @@
-#define _POSIX_C_SOURCE 200809L
-#include <assert.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <linux/input.h>
-#include <linux/kd.h>
-#include <linux/major.h>
-#include <linux/vt.h>
-#include <signal.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/sysmacros.h>
-#include <unistd.h>
-#include <wayland-server-core.h>
-#include <wlr/backend/session/interface.h>
-#include <wlr/util/log.h>
-#include "backend/session/direct-ipc.h"
-#include "backend/session/session.h"
-#include "util/signal.h"
-
-enum { DRM_MAJOR = 226 };
-
-const struct session_impl session_direct;
-
-struct direct_session {
- struct wlr_session base;
- int tty_fd;
- int old_kbmode;
- int sock;
- pid_t child;
-
- struct wl_event_source *vt_source;
-};
-
-static struct direct_session *direct_session_from_session(
- struct wlr_session *base) {
- assert(base->impl == &session_direct);
- return (struct direct_session *)base;
-}
-
-static int direct_session_open(struct wlr_session *base, const char *path) {
- struct direct_session *session = direct_session_from_session(base);
-
- int fd = direct_ipc_open(session->sock, path);
- if (fd < 0) {
- wlr_log(WLR_ERROR, "Failed to open %s: %s%s", path, strerror(-fd),
- fd == -EINVAL ? "; is another display server running?" : "");
- return fd;
- }
-
- struct stat st;
- if (fstat(fd, &st) < 0) {
- close(fd);
- return -errno;
- }
-
- if (major(st.st_rdev) == DRM_MAJOR) {
- direct_ipc_setmaster(session->sock, fd);
- }
-
- return fd;
-}
-
-static void direct_session_close(struct wlr_session *base, int fd) {
- struct direct_session *session = direct_session_from_session(base);
-
- struct stat st;
- if (fstat(fd, &st) < 0) {
- wlr_log_errno(WLR_ERROR, "Stat failed");
- close(fd);
- return;
- }
-
- if (major(st.st_rdev) == DRM_MAJOR) {
- direct_ipc_dropmaster(session->sock, fd);
- } else if (major(st.st_rdev) == INPUT_MAJOR) {
- ioctl(fd, EVIOCREVOKE, 0);
- }
-
- close(fd);
-}
-
-static bool direct_change_vt(struct wlr_session *base, unsigned vt) {
- struct direct_session *session = direct_session_from_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 = direct_session_from_session(base);
-
- 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);
-
- if (errno) {
- wlr_log(WLR_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);
-
- free(session);
-}
-
-static int vt_handler(int signo, void *data) {
- struct direct_session *session = data;
-
- if (session->base.active) {
- session->base.active = false;
- wlr_signal_emit_safe(&session->base.events.active, NULL);
-
- struct wlr_device *dev;
- wl_list_for_each(dev, &session->base.devices, link) {
- if (major(dev->dev) == DRM_MAJOR) {
- direct_ipc_dropmaster(session->sock,
- dev->fd);
- }
- }
-
- ioctl(session->tty_fd, VT_RELDISP, 1);
- } else {
- ioctl(session->tty_fd, VT_RELDISP, VT_ACKACQ);
-
- struct wlr_device *dev;
- wl_list_for_each(dev, &session->base.devices, link) {
- if (major(dev->dev) == DRM_MAJOR) {
- direct_ipc_setmaster(session->sock,
- dev->fd);
- }
- }
-
- session->base.active = true;
- wlr_signal_emit_safe(&session->base.events.active, NULL);
- }
-
- return 1;
-}
-
-static bool setup_tty(struct direct_session *session, struct wl_display *display) {
-
- bool default_tty = false;
-
- const char *tty_path = getenv("WLR_DIRECT_TTY");
-
- if (!tty_path) {
- tty_path = "/dev/tty";
- default_tty = true;
- }
-
- int fd = open(tty_path, O_RDWR | O_CLOEXEC);
- if (fd == -1) {
- wlr_log_errno(WLR_ERROR, "Cannot open %s", tty_path);
- return false;
- }
-
- struct vt_stat vt_stat;
- if (ioctl(fd, VT_GETSTATE, &vt_stat)) {
- wlr_log_errno(WLR_ERROR, "Could not get current tty number");
- goto error;
- }
-
- int tty = vt_stat.v_active;
- int ret, kd_mode, old_kbmode;
-
- ret = ioctl(fd, KDGETMODE, &kd_mode);
- if (ret) {
- wlr_log_errno(WLR_ERROR, "Failed to get tty mode");
- goto error;
- }
-
- if (default_tty && kd_mode != KD_TEXT) {
- wlr_log(WLR_ERROR,
- "tty already in graphics mode; is another display server running?");
- goto error;
- }
-
- ioctl(fd, VT_ACTIVATE, tty);
- ioctl(fd, VT_WAITACTIVE, tty);
-
- if (ioctl(fd, KDGKBMODE, &old_kbmode)) {
- wlr_log_errno(WLR_ERROR, "Failed to read keyboard mode");
- goto error;
- }
-
- if (ioctl(fd, KDSKBMODE, K_OFF)) {
- wlr_log_errno(WLR_ERROR, "Failed to set keyboard mode");
- goto error;
- }
-
- if (ioctl(fd, KDSETMODE, KD_GRAPHICS)) {
- wlr_log_errno(WLR_ERROR, "Failed to set graphics mode on tty");
- goto error;
- }
-
- struct vt_mode mode = {
- .mode = VT_PROCESS,
- .relsig = SIGUSR2,
- .acqsig = SIGUSR2,
- };
-
- if (ioctl(fd, VT_SETMODE, &mode) < 0) {
- wlr_log(WLR_ERROR, "Failed to take control of tty");
- goto error;
- }
-
- struct wl_event_loop *loop = wl_display_get_event_loop(display);
- session->vt_source = wl_event_loop_add_signal(loop, SIGUSR2,
- vt_handler, session);
- if (!session->vt_source) {
- goto error;
- }
-
- session->base.vtnr = tty;
- session->tty_fd = fd;
- session->old_kbmode = old_kbmode;
-
- return true;
-
-error:
- close(fd);
- return false;
-}
-
-static struct wlr_session *direct_session_create(struct wl_display *disp) {
- struct direct_session *session = calloc(1, sizeof(*session));
- if (!session) {
- wlr_log_errno(WLR_ERROR, "Allocation failed");
- return NULL;
- }
-
- session_init(&session->base);
- session->sock = direct_ipc_init(&session->child);
- if (session->sock == -1) {
- goto error_session;
- }
-
- const char *seat = getenv("XDG_SEAT");
- if (!seat) {
- seat = "seat0";
- }
-
- 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;
- session->base.active = true;
-
- wlr_log(WLR_INFO, "Successfully loaded direct session");
- return &session->base;
-
-error_ipc:
- direct_ipc_finish(session->sock, session->child);
- close(session->sock);
-error_session:
- free(session);
- return NULL;
-}
-
-const struct session_impl session_direct = {
- .create = direct_session_create,
- .destroy = direct_session_destroy,
- .open = direct_session_open,
- .close = direct_session_close,
- .change_vt = direct_change_vt,
-};
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-20 08:48:55 +0000