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authorGreg V <greg@unrelenting.technology>2017-10-10 01:23:43 +0300
committerGreg V <greg@unrelenting.technology>2017-10-11 00:07:21 +0300
commita5fe9aa73633594b443e2a1a990cdf23addbb28b (patch)
tree561968f504eb29d4f3bf9cd2a3c1ba5d89e44471 /backend/session
parentc39bfe7f84818be9d9901e30ba26db9e8f19c47e (diff)
Add FreeBSD compatibility
Diffstat (limited to 'backend/session')
-rw-r--r--backend/session/direct-freebsd.c217
-rw-r--r--backend/session/direct-ipc.c13
-rw-r--r--backend/session/session.c6
3 files changed, 233 insertions, 3 deletions
diff --git a/backend/session/direct-freebsd.c b/backend/session/direct-freebsd.c
new file mode 100644
index 00000000..fc4bab04
--- /dev/null
+++ b/backend/session/direct-freebsd.c
@@ -0,0 +1,217 @@
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <termios.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <dev/evdev/input.h>
+#include <sys/kbio.h>
+#include <sys/consio.h>
+#include <wayland-server.h>
+#include <wlr/backend/session/interface.h>
+#include <wlr/util/log.h>
+#include "backend/session/direct-ipc.h"
+
+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 int direct_session_open(struct wlr_session *base, const char *path) {
+ struct direct_session *session = wl_container_of(base, session, base);
+
+ int fd = direct_ipc_open(session->sock, path);
+ if (fd < 0) {
+ wlr_log(L_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;
+ }
+
+ return fd;
+}
+
+static void direct_session_close(struct wlr_session *base, int fd) {
+ struct direct_session *session = wl_container_of(base, session, base);
+
+ struct stat st;
+ if (fstat(fd, &st) < 0) {
+ wlr_log_errno(L_ERROR, "Stat failed");
+ close(fd);
+ return;
+ }
+
+ close(fd);
+}
+
+static bool direct_change_vt(struct wlr_session *base, unsigned vt) {
+ struct direct_session *session = wl_container_of(base, session, base);
+ 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;
+
+ 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");
+ }
+
+ direct_ipc_finish(session->sock, session->child);
+ close(session->sock);
+
+ wl_event_source_remove(session->vt_source);
+ close(session->tty_fd);
+ free(session);
+}
+
+static int vt_handler(int signo, void *data) {
+ struct direct_session *session = data;
+
+ if (session->base.active) {
+ session->base.active = false;
+ wl_signal_emit(&session->base.session_signal, session);
+ ioctl(session->tty_fd, VT_RELDISP, 1);
+ } else {
+ ioctl(session->tty_fd, VT_RELDISP, VT_ACKACQ);
+ session->base.active = true;
+ wl_signal_emit(&session->base.session_signal, session);
+ }
+
+ return 1;
+}
+
+static bool setup_tty(struct direct_session *session, struct wl_display *display) {
+ int fd = -1, tty = -1, tty0_fd = -1;
+ if ((tty0_fd = open("/dev/ttyv0", O_RDWR | O_CLOEXEC)) < 0) {
+ wlr_log_errno(L_ERROR, "Could not open /dev/ttyv0 to find a free vt");
+ goto error;
+ }
+ if (ioctl(tty0_fd, VT_OPENQRY, &tty) != 0) {
+ wlr_log_errno(L_ERROR, "Could not find a free vt");
+ goto error;
+ }
+ close(tty0_fd);
+ char tty_path[64];
+ snprintf(tty_path, sizeof(tty_path), "/dev/ttyv%d", tty - 1);
+ wlr_log(L_INFO, "Using tty %s", tty_path);
+ fd = open(tty_path, O_RDWR | O_NOCTTY | O_CLOEXEC);
+
+ if (fd == -1) {
+ wlr_log_errno(L_ERROR, "Cannot open tty");
+ return false;
+ }
+
+ ioctl(fd, VT_ACTIVATE, tty);
+ ioctl(fd, VT_WAITACTIVE, tty);
+
+ int old_kbmode;
+ if (ioctl(fd, KDGKBMODE, &old_kbmode)) {
+ wlr_log_errno(L_ERROR, "Failed to read tty %d keyboard mode", tty);
+ goto error;
+ }
+
+ if (ioctl(fd, KDSKBMODE, K_CODE)) {
+ wlr_log_errno(L_ERROR, "Failed to set keyboard mode K_CODE on tty %d", tty);
+ goto error;
+ }
+
+ if (ioctl(fd, KDSETMODE, KD_GRAPHICS)) {
+ wlr_log_errno(L_ERROR, "Failed to set graphics mode on tty %d", tty);
+ goto error;
+ }
+
+ struct vt_mode mode = {
+ .mode = VT_PROCESS,
+ .relsig = SIGUSR1,
+ .acqsig = SIGUSR1,
+ .frsig = SIGIO, // has to be set
+ };
+
+ if (ioctl(fd, VT_SETMODE, &mode) < 0) {
+ wlr_log(L_ERROR, "Failed to take control of tty %d", tty);
+ goto error;
+ }
+
+ struct wl_event_loop *loop = wl_display_get_event_loop(display);
+ session->vt_source = wl_event_loop_add_signal(loop, SIGUSR1,
+ 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:
+ // Drop back to tty 1, better than hanging in a useless blank console
+ ioctl(fd, VT_ACTIVATE, 1);
+ 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(L_ERROR, "Allocation failed");
+ return NULL;
+ }
+
+ session->sock = direct_ipc_init(&session->child);
+ if (session->sock == -1) {
+ goto error_session;
+ }
+
+ if (!setup_tty(session, disp)) {
+ goto error_ipc;
+ }
+
+ wlr_log(L_INFO, "Successfully loaded direct session");
+
+ snprintf(session->base.seat, sizeof(session->base.seat), "seat0");
+ session->base.impl = &session_direct;
+ 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,
+};
diff --git a/backend/session/direct-ipc.c b/backend/session/direct-ipc.c
index 5f1494a6..0ea51e2f 100644
--- a/backend/session/direct-ipc.c
+++ b/backend/session/direct-ipc.c
@@ -1,4 +1,8 @@
#define _POSIX_C_SOURCE 200809L
+#ifdef __FreeBSD__
+#define __BSD_VISIBLE 1
+#define INPUT_MAJOR 0
+#endif
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
@@ -8,10 +12,12 @@
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
-#include <sys/sysmacros.h>
#include <sys/wait.h>
-#include <xf86drm.h>
+#ifdef __linux__
+#include <sys/sysmacros.h>
#include <linux/major.h>
+#endif
+#include <xf86drm.h>
#include <wlr/util/log.h>
#include "backend/session/direct-ipc.h"
@@ -35,11 +41,12 @@ static bool have_permissions(void) {
}
#else
static bool have_permissions(void) {
+#ifdef __linux__
if (geteuid() != 0) {
wlr_log(L_ERROR, "Do not have root privileges; cannot become DRM master");
return false;
}
-
+#endif
return true;
}
#endif
diff --git a/backend/session/session.c b/backend/session/session.c
index b73952fd..b14ca4d0 100644
--- a/backend/session/session.c
+++ b/backend/session/session.c
@@ -263,6 +263,11 @@ size_t wlr_session_find_gpus(struct wlr_session *session,
return explicit_find_gpus(session, ret_len, ret, explicit);
}
+#ifdef __FreeBSD__
+ // XXX: libudev-devd does not return any GPUs (yet?)
+ return explicit_find_gpus(session, ret_len, ret, "/dev/drm/0");
+#else
+
struct udev_enumerate *en = udev_enumerate_new(session->udev);
if (!en) {
wlr_log(L_ERROR, "Failed to create udev enumeration");
@@ -329,4 +334,5 @@ size_t wlr_session_find_gpus(struct wlr_session *session,
udev_enumerate_unref(en);
return i;
+#endif
}