forked from enlightenment/efl
329 lines
7.2 KiB
C
329 lines
7.2 KiB
C
#include "ecore_drm_private.h"
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#ifndef KDSKBMUTE
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# define KDSKBMUTE 0x4B51
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#endif
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static int kbd_mode = 0;
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static Eina_Bool
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_ecore_drm_tty_cb_vt_signal(void *data, int type EINA_UNUSED, void *event)
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{
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Ecore_Drm_Device *dev;
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Ecore_Event_Signal_User *ev;
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siginfo_t sig;
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ev = event;
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sig = ev->data;
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if (sig.si_code != SI_KERNEL) return ECORE_CALLBACK_RENEW;
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if (!(dev = data)) return ECORE_CALLBACK_RENEW;
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switch (ev->number)
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{
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case 1:
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ecore_drm_device_master_drop(dev);
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ioctl(dev->tty.fd, VT_RELDISP, 1);
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break;
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case 2:
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ioctl(dev->tty.fd, VT_RELDISP, VT_ACKACQ);
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ecore_drm_device_master_set(dev);
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break;
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default:
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break;
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}
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return ECORE_CALLBACK_RENEW;
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}
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Eina_Bool
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_ecore_drm_tty_switch(Ecore_Drm_Device *dev, int activate_vt)
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{
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if (!ioctl(dev->tty.fd, VT_ACTIVATE, activate_vt) < 0)
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return EINA_FALSE;
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return EINA_TRUE;
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}
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static Eina_Bool
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_ecore_drm_tty_setup(Ecore_Drm_Device *dev)
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{
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struct stat st;
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int kmode;
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struct vt_mode vtmode = { 0 };
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if ((fstat(dev->tty.fd, &st) == -1) ||
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(major(st.st_rdev) != TTY_MAJOR) || (minor(st.st_rdev) == 0))
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{
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ERR("Failed to get stats for tty: %m");
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return EINA_FALSE;
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}
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if (ioctl(dev->tty.fd, KDGETMODE, &kmode))
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{
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ERR("Could not get tty mode: %m");
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return EINA_FALSE;
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}
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if (kmode != KD_TEXT)
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{
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WRN("Virtual Terminal already in KD_GRAPHICS mode");
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return EINA_FALSE;
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}
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if (ioctl(dev->tty.fd, VT_ACTIVATE, minor(st.st_rdev)) < 0)
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{
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ERR("Failed to activate vt: %m");
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return EINA_FALSE;
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}
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if (ioctl(dev->tty.fd, VT_WAITACTIVE, minor(st.st_rdev)) < 0)
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{
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ERR("Failed to wait active: %m");
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return EINA_FALSE;
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}
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if (ioctl(dev->tty.fd, KDGKBMODE, &kbd_mode))
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{
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ERR("Could not get curent kbd mode: %m");
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return EINA_FALSE;
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}
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if (ioctl(dev->tty.fd, KDSKBMUTE, 1) &&
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ioctl(dev->tty.fd, KDSKBMODE, K_OFF))
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{
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ERR("Could not set K_OFF keyboard mode: %m");
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return EINA_FALSE;
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}
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if (ioctl(dev->tty.fd, KDSETMODE, KD_GRAPHICS))
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{
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ERR("Could not set graphics mode: %m");
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goto err_kmode;
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}
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vtmode.mode = VT_PROCESS;
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vtmode.waitv = 0;
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vtmode.relsig = SIGUSR1;
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vtmode.acqsig = SIGUSR2;
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if (ioctl(dev->tty.fd, VT_SETMODE, &vtmode) < 0)
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{
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ERR("Could not set Terminal Mode: %m");
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goto err_setmode;
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}
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return EINA_TRUE;
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err_setmode:
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ioctl(dev->tty.fd, KDSETMODE, KD_TEXT);
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err_kmode:
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return EINA_FALSE;
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}
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/**
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* @defgroup Ecore_Drm_Tty_Group Tty manipulation functions
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*
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* Functions that deal with opening, closing, and otherwise using a tty
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*/
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/**
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* Open a tty for use
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*
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* @param dev The Ecore_Drm_Device that this tty will belong to.
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* @param name The name of the tty to try and open.
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* If NULL, /dev/tty0 will be used.
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*
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* @return EINA_TRUE on success, EINA_FALSE on failure
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*
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* @ingroup Ecore_Drm_Tty_Group
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*/
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EAPI Eina_Bool
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ecore_drm_tty_open(Ecore_Drm_Device *dev, const char *name)
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{
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char tty[32] = "<stdin>";
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/* check for valid device */
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if ((!dev) || (!dev->drm.name)) return EINA_FALSE;
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/* assign default tty fd of -1 */
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dev->tty.fd = -1;
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if (!name)
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{
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char *env;
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if ((env = getenv("ECORE_DRM_TTY")))
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snprintf(tty, sizeof(tty), "%s", env);
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else
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{
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dev->tty.fd = dup(STDIN_FILENO);
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if (dev->tty.fd < 0)
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{
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ERR("Could not dup stdin: %m");
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return EINA_FALSE;
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}
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}
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}
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else
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snprintf(tty, sizeof(tty), "%s", name);
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if (dev->tty.fd < 0)
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{
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DBG("Trying to Open Tty: %s", tty);
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dev->tty.fd = open(tty, (O_RDWR | O_CLOEXEC)); //O_RDWR | O_NOCTTY);
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if (dev->tty.fd < 0)
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{
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DBG("Failed to Open Tty: %m");
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return EINA_FALSE;
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}
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}
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/* DBG("Opened Tty %s : %d", tty, dev->tty.fd); */
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/* save tty name */
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dev->tty.name = eina_stringshare_add(tty);
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if (!_ecore_drm_tty_setup(dev))
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{
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close(dev->tty.fd);
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dev->tty.fd = -1;
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if (dev->tty.name)
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{
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eina_stringshare_del(dev->tty.name);
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dev->tty.name = NULL;
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}
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return EINA_FALSE;
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}
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dev->tty.event_hdlr =
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ecore_event_handler_add(ECORE_EVENT_SIGNAL_USER,
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_ecore_drm_tty_cb_vt_signal, dev);
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/* set current tty into env */
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setenv("ECORE_DRM_TTY", tty, 1);
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return EINA_TRUE;
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}
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static void
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_ecore_drm_tty_restore(Ecore_Drm_Device *dev)
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{
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int fd = dev->tty.fd;
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struct vt_mode mode = { 0 };
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if (fd < 0) return;
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if (ioctl(fd, KDSETMODE, KD_TEXT))
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ERR("Could not set KD_TEXT mode on tty: %m\n");
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if (ioctl(dev->tty.fd, KDSKBMUTE, 0) &&
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ioctl(dev->tty.fd, KDSKBMODE, kbd_mode))
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{
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ERR("Could not restore keyboard mode: %m");
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}
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ecore_drm_device_master_drop(dev);
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mode.mode = VT_AUTO;
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if (ioctl(fd, VT_SETMODE, &mode) < 0)
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ERR("Could not reset VT handling\n");
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}
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/**
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* Close an already opened tty
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*
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* @param dev The Ecore_Drm_Device which owns this tty.
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*
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* @return EINA_TRUE on success, EINA_FALSE on failure
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*
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* @ingroup Ecore_Drm_Tty_Group
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*/
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EAPI Eina_Bool
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ecore_drm_tty_close(Ecore_Drm_Device *dev)
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{
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/* check for valid device */
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if ((!dev) || (!dev->drm.name)) return EINA_FALSE;
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_ecore_drm_tty_restore(dev);
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close(dev->tty.fd);
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dev->tty.fd = -1;
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/* clear the tty name */
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if (dev->tty.name) eina_stringshare_del(dev->tty.name);
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dev->tty.name = NULL;
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unsetenv("ECORE_DRM_TTY");
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return EINA_TRUE;
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}
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/**
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* Release a virtual terminal
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*
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* @param dev The Ecore_Drm_Device which owns this tty.
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*
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* @return EINA_TRUE on success, EINA_FALSE on failure
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*
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* @ingroup Ecore_Drm_Tty_Group
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*/
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EAPI Eina_Bool
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ecore_drm_tty_release(Ecore_Drm_Device *dev)
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{
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/* check for valid device */
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if ((!dev) || (!dev->drm.name) || (dev->tty.fd < 0)) return EINA_FALSE;
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/* send ioctl for vt release */
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if (ioctl(dev->tty.fd, VT_RELDISP, 1) < 0)
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{
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ERR("Could not release VT: %m");
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return EINA_FALSE;
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}
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return EINA_TRUE;
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}
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/**
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* Acquire a virtual terminal
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*
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* @param dev The Ecore_Drm_Device which owns this tty.
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*
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* @return EINA_TRUE on success, EINA_FALSE on failure
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*
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* @ingroup Ecore_Drm_Tty_Group
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*/
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EAPI Eina_Bool
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ecore_drm_tty_acquire(Ecore_Drm_Device *dev)
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{
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/* check for valid device */
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if ((!dev) || (!dev->drm.name) || (dev->tty.fd < 0)) return EINA_FALSE;
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/* send ioctl for vt acquire */
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if (ioctl(dev->tty.fd, VT_RELDISP, VT_ACKACQ) < 0)
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{
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ERR("Could not acquire VT: %m");
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return EINA_FALSE;
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}
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return EINA_TRUE;
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}
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/**
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* Get the opened virtual terminal file descriptor
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*
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* @param dev The Ecore_Drm_Device which owns this tty.
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*
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* @return The tty fd opened from previous call to ecore_drm_tty_open
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*
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* @ingroup Ecore_Drm_Tty_Group
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*
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* @since 1.10
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*/
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EAPI int
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ecore_drm_tty_get(Ecore_Drm_Device *dev)
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{
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/* check for valid device */
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if ((!dev) || (!dev->drm.name) || (dev->tty.fd < 0)) return -1;
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return dev->tty.fd;
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}
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