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