The struct weston_launcher object will now either handle tty and vt switching details in-process (when running weston directly as root) or talk to the weston-launch process.dev
parent
6a7c8492cc
commit
3f4958755d
@ -1,294 +0,0 @@ |
|||||||
/*
|
|
||||||
* Copyright © 2010 Intel Corporation |
|
||||||
* |
|
||||||
* Permission to use, copy, modify, distribute, and sell this software and |
|
||||||
* its documentation for any purpose is hereby granted without fee, provided |
|
||||||
* that the above copyright notice appear in all copies and that both that |
|
||||||
* copyright notice and this permission notice appear in supporting |
|
||||||
* documentation, and that the name of the copyright holders not be used in |
|
||||||
* advertising or publicity pertaining to distribution of the software |
|
||||||
* without specific, written prior permission. The copyright holders make |
|
||||||
* no representations about the suitability of this software for any |
|
||||||
* purpose. It is provided "as is" without express or implied warranty. |
|
||||||
* |
|
||||||
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS |
|
||||||
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
|
||||||
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY |
|
||||||
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER |
|
||||||
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF |
|
||||||
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
|
||||||
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
|
||||||
*/ |
|
||||||
|
|
||||||
#include "config.h" |
|
||||||
|
|
||||||
#include <termios.h> |
|
||||||
#include <stdio.h> |
|
||||||
#include <stdlib.h> |
|
||||||
#include <string.h> |
|
||||||
#include <unistd.h> |
|
||||||
#include <fcntl.h> |
|
||||||
#include <signal.h> |
|
||||||
#include <linux/kd.h> |
|
||||||
#include <linux/vt.h> |
|
||||||
#include <linux/major.h> |
|
||||||
#include <sys/ioctl.h> |
|
||||||
#include <sys/types.h> |
|
||||||
#include <sys/stat.h> |
|
||||||
|
|
||||||
#include "compositor.h" |
|
||||||
|
|
||||||
/* Introduced in 2.6.38 */ |
|
||||||
#ifndef K_OFF |
|
||||||
#define K_OFF 0x04 |
|
||||||
#endif |
|
||||||
|
|
||||||
struct tty { |
|
||||||
struct weston_compositor *compositor; |
|
||||||
int fd; |
|
||||||
struct termios terminal_attributes; |
|
||||||
|
|
||||||
struct wl_event_source *input_source; |
|
||||||
struct wl_event_source *vt_source; |
|
||||||
int vt, starting_vt; |
|
||||||
int kb_mode; |
|
||||||
}; |
|
||||||
|
|
||||||
static int vt_handler(int signal_number, void *data) |
|
||||||
{ |
|
||||||
struct tty *tty = data; |
|
||||||
struct weston_compositor *compositor = tty->compositor; |
|
||||||
|
|
||||||
if (compositor->session_active) { |
|
||||||
compositor->session_active = 0; |
|
||||||
wl_signal_emit(&tty->compositor->session_signal, |
|
||||||
tty->compositor); |
|
||||||
|
|
||||||
ioctl(tty->fd, VT_RELDISP, 1); |
|
||||||
} else { |
|
||||||
|
|
||||||
ioctl(tty->fd, VT_RELDISP, VT_ACKACQ); |
|
||||||
|
|
||||||
compositor->session_active = 1; |
|
||||||
wl_signal_emit(&tty->compositor->session_signal, |
|
||||||
tty->compositor); |
|
||||||
} |
|
||||||
|
|
||||||
return 1; |
|
||||||
} |
|
||||||
|
|
||||||
static int |
|
||||||
on_tty_input(int fd, uint32_t mask, void *data) |
|
||||||
{ |
|
||||||
struct tty *tty = data; |
|
||||||
|
|
||||||
/* Ignore input to tty. We get keyboard events from evdev */ |
|
||||||
tcflush(tty->fd, TCIFLUSH); |
|
||||||
|
|
||||||
return 1; |
|
||||||
} |
|
||||||
|
|
||||||
static int |
|
||||||
try_open_vt(struct tty *tty) |
|
||||||
{ |
|
||||||
int tty0, fd; |
|
||||||
char filename[16]; |
|
||||||
|
|
||||||
tty0 = open("/dev/tty0", O_WRONLY | O_CLOEXEC); |
|
||||||
if (tty0 < 0) { |
|
||||||
weston_log("could not open tty0: %m\n"); |
|
||||||
return -1; |
|
||||||
} |
|
||||||
|
|
||||||
if (ioctl(tty0, VT_OPENQRY, &tty->vt) < 0 || tty->vt == -1) { |
|
||||||
weston_log("could not open tty0: %m\n"); |
|
||||||
close(tty0); |
|
||||||
return -1; |
|
||||||
} |
|
||||||
|
|
||||||
close(tty0); |
|
||||||
snprintf(filename, sizeof filename, "/dev/tty%d", tty->vt); |
|
||||||
weston_log("compositor: using new vt %s\n", filename); |
|
||||||
fd = open(filename, O_RDWR | O_NOCTTY | O_CLOEXEC); |
|
||||||
if (fd < 0) |
|
||||||
return fd; |
|
||||||
|
|
||||||
return fd; |
|
||||||
} |
|
||||||
|
|
||||||
int |
|
||||||
tty_activate_vt(struct tty *tty, int vt) |
|
||||||
{ |
|
||||||
return ioctl(tty->fd, VT_ACTIVATE, vt); |
|
||||||
} |
|
||||||
|
|
||||||
struct tty * |
|
||||||
tty_create(struct weston_compositor *compositor, int tty_nr) |
|
||||||
{ |
|
||||||
struct termios raw_attributes; |
|
||||||
struct vt_mode mode = { 0 }; |
|
||||||
int ret; |
|
||||||
struct tty *tty; |
|
||||||
struct wl_event_loop *loop; |
|
||||||
struct stat buf; |
|
||||||
char filename[16]; |
|
||||||
struct vt_stat vts; |
|
||||||
|
|
||||||
tty = zalloc(sizeof *tty); |
|
||||||
if (tty == NULL) |
|
||||||
return NULL; |
|
||||||
|
|
||||||
tty->compositor = compositor; |
|
||||||
|
|
||||||
tty->fd = weston_environment_get_fd("WESTON_TTY_FD"); |
|
||||||
if (tty->fd < 0) |
|
||||||
tty->fd = STDIN_FILENO; |
|
||||||
|
|
||||||
if (tty_nr > 0) { |
|
||||||
snprintf(filename, sizeof filename, "/dev/tty%d", tty_nr); |
|
||||||
weston_log("compositor: using %s\n", filename); |
|
||||||
tty->fd = open(filename, O_RDWR | O_NOCTTY | O_CLOEXEC); |
|
||||||
tty->vt = tty_nr; |
|
||||||
} else if (fstat(tty->fd, &buf) == 0 && |
|
||||||
major(buf.st_rdev) == TTY_MAJOR && |
|
||||||
minor(buf.st_rdev) > 0) { |
|
||||||
if (tty->fd == STDIN_FILENO) |
|
||||||
tty->fd = fcntl(STDIN_FILENO, F_DUPFD_CLOEXEC, 0); |
|
||||||
tty->vt = minor(buf.st_rdev); |
|
||||||
} else { |
|
||||||
/* Fall back to try opening a new VT. This typically
|
|
||||||
* requires root. */ |
|
||||||
tty->fd = try_open_vt(tty); |
|
||||||
} |
|
||||||
|
|
||||||
if (tty->fd < 0) { |
|
||||||
weston_log("failed to open tty: %m\n"); |
|
||||||
free(tty); |
|
||||||
return NULL; |
|
||||||
} |
|
||||||
|
|
||||||
if (ioctl(tty->fd, VT_GETSTATE, &vts) == 0) |
|
||||||
tty->starting_vt = vts.v_active; |
|
||||||
else |
|
||||||
tty->starting_vt = tty->vt; |
|
||||||
|
|
||||||
if (tty->starting_vt != tty->vt) { |
|
||||||
if (ioctl(tty->fd, VT_ACTIVATE, tty->vt) < 0 || |
|
||||||
ioctl(tty->fd, VT_WAITACTIVE, tty->vt) < 0) { |
|
||||||
weston_log("failed to switch to new vt\n"); |
|
||||||
goto err; |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
if (tcgetattr(tty->fd, &tty->terminal_attributes) < 0) { |
|
||||||
weston_log("could not get terminal attributes: %m\n"); |
|
||||||
goto err; |
|
||||||
} |
|
||||||
|
|
||||||
/* Ignore control characters and disable echo */ |
|
||||||
raw_attributes = tty->terminal_attributes; |
|
||||||
cfmakeraw(&raw_attributes); |
|
||||||
|
|
||||||
/* Fix up line endings to be normal (cfmakeraw hoses them) */ |
|
||||||
raw_attributes.c_oflag |= OPOST | OCRNL; |
|
||||||
|
|
||||||
if (tcsetattr(tty->fd, TCSANOW, &raw_attributes) < 0) |
|
||||||
weston_log("could not put terminal into raw mode: %m\n"); |
|
||||||
|
|
||||||
loop = wl_display_get_event_loop(compositor->wl_display); |
|
||||||
|
|
||||||
ioctl(tty->fd, KDGKBMODE, &tty->kb_mode); |
|
||||||
ret = ioctl(tty->fd, KDSKBMODE, K_OFF); |
|
||||||
if (ret) { |
|
||||||
ret = ioctl(tty->fd, KDSKBMODE, K_RAW); |
|
||||||
if (ret) { |
|
||||||
weston_log("failed to set keyboard mode on tty: %m\n"); |
|
||||||
goto err_attr; |
|
||||||
} |
|
||||||
|
|
||||||
tty->input_source = wl_event_loop_add_fd(loop, tty->fd, |
|
||||||
WL_EVENT_READABLE, |
|
||||||
on_tty_input, tty); |
|
||||||
if (!tty->input_source) |
|
||||||
goto err_kdkbmode; |
|
||||||
} |
|
||||||
|
|
||||||
ret = ioctl(tty->fd, KDSETMODE, KD_GRAPHICS); |
|
||||||
if (ret) { |
|
||||||
weston_log("failed to set KD_GRAPHICS mode on tty: %m\n"); |
|
||||||
goto err_kdkbmode; |
|
||||||
} |
|
||||||
|
|
||||||
mode.mode = VT_PROCESS; |
|
||||||
mode.relsig = SIGUSR1; |
|
||||||
mode.acqsig = SIGUSR1; |
|
||||||
if (ioctl(tty->fd, VT_SETMODE, &mode) < 0) { |
|
||||||
weston_log("failed to take control of vt handling\n"); |
|
||||||
goto err_kdmode; |
|
||||||
} |
|
||||||
|
|
||||||
tty->vt_source = |
|
||||||
wl_event_loop_add_signal(loop, SIGUSR1, vt_handler, tty); |
|
||||||
if (!tty->vt_source) |
|
||||||
goto err_vtmode; |
|
||||||
|
|
||||||
return tty; |
|
||||||
|
|
||||||
err_vtmode: |
|
||||||
ioctl(tty->fd, VT_SETMODE, &mode); |
|
||||||
|
|
||||||
err_kdmode: |
|
||||||
ioctl(tty->fd, KDSETMODE, KD_TEXT); |
|
||||||
|
|
||||||
err_kdkbmode: |
|
||||||
if (tty->input_source) |
|
||||||
wl_event_source_remove(tty->input_source); |
|
||||||
ioctl(tty->fd, KDSKBMODE, tty->kb_mode); |
|
||||||
|
|
||||||
err_attr: |
|
||||||
tcsetattr(tty->fd, TCSANOW, &tty->terminal_attributes); |
|
||||||
|
|
||||||
err: |
|
||||||
close(tty->fd); |
|
||||||
free(tty); |
|
||||||
return NULL; |
|
||||||
} |
|
||||||
|
|
||||||
void tty_reset(struct tty *tty) |
|
||||||
{ |
|
||||||
struct vt_mode mode = { 0 }; |
|
||||||
|
|
||||||
if (ioctl(tty->fd, KDSKBMODE, tty->kb_mode)) |
|
||||||
weston_log("failed to restore keyboard mode: %m\n"); |
|
||||||
|
|
||||||
if (ioctl(tty->fd, KDSETMODE, KD_TEXT)) |
|
||||||
weston_log("failed to set KD_TEXT mode on tty: %m\n"); |
|
||||||
|
|
||||||
if (tcsetattr(tty->fd, TCSANOW, &tty->terminal_attributes) < 0) |
|
||||||
weston_log("could not restore terminal to canonical mode\n"); |
|
||||||
|
|
||||||
mode.mode = VT_AUTO; |
|
||||||
if (ioctl(tty->fd, VT_SETMODE, &mode) < 0) |
|
||||||
weston_log("could not reset vt handling\n"); |
|
||||||
|
|
||||||
if (tty->compositor->session_active && tty->vt != tty->starting_vt) { |
|
||||||
ioctl(tty->fd, VT_ACTIVATE, tty->starting_vt); |
|
||||||
ioctl(tty->fd, VT_WAITACTIVE, tty->starting_vt); |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
void |
|
||||||
tty_destroy(struct tty *tty) |
|
||||||
{ |
|
||||||
if (tty->input_source) |
|
||||||
wl_event_source_remove(tty->input_source); |
|
||||||
|
|
||||||
if (tty->vt_source) |
|
||||||
wl_event_source_remove(tty->vt_source); |
|
||||||
|
|
||||||
tty_reset(tty); |
|
||||||
|
|
||||||
close(tty->fd); |
|
||||||
|
|
||||||
free(tty); |
|
||||||
} |
|
Loading…
Reference in new issue