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Add tty_set_winsize().

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This removes some of the signalling magic from the Syscons driver and
puts it in the TTY layer, where it belongs.
This commit is contained in:
Ed Schouten 2012-11-03 22:21:37 +00:00
parent 64dbfc6d92
commit 305921c48e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=242529
3 changed files with 24 additions and 37 deletions
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45
sys/dev/syscons/scvidctl.c
View File

@ -137,6 +137,7 @@ sc_set_text_mode(scr_stat *scp, struct tty *tp, int mode, int xsize, int ysize,
int fontsize, int fontwidth)
{
video_info_t info;
struct winsize wsz;
u_char *font;
int prev_ysize;
int error;
@ -234,16 +235,9 @@ sc_set_text_mode(scr_stat *scp, struct tty *tp, int mode, int xsize, int ysize,
if (tp == NULL)
return 0;
DPRINTF(5, ("ws_*size (%d,%d), size (%d,%d)\n",
tp->t_winsize.ws_col, tp->t_winsize.ws_row, scp->xsize, scp->ysize));
if (tp->t_winsize.ws_col != scp->xsize
|| tp->t_winsize.ws_row != scp->ysize) {
tp->t_winsize.ws_col = scp->xsize;
tp->t_winsize.ws_row = scp->ysize;
tty_signal_pgrp(tp, SIGWINCH);
}
wsz.ws_col = scp->xsize;
wsz.ws_row = scp->ysize;
tty_set_winsize(tp, &wsz);
return 0;
}
@ -254,6 +248,7 @@ sc_set_graphics_mode(scr_stat *scp, struct tty *tp, int mode)
return ENODEV;
#else
video_info_t info;
struct winsize wsz;
int error;
int s;
@ -300,14 +295,9 @@ sc_set_graphics_mode(scr_stat *scp, struct tty *tp, int mode)
if (tp == NULL)
return 0;
if (tp->t_winsize.ws_xpixel != scp->xpixel
|| tp->t_winsize.ws_ypixel != scp->ypixel) {
tp->t_winsize.ws_xpixel = scp->xpixel;
tp->t_winsize.ws_ypixel = scp->ypixel;
tty_signal_pgrp(tp, SIGWINCH);
}
wsz.ws_col = scp->xsize;
wsz.ws_row = scp->ysize;
tty_set_winsize(tp, &wsz);
return 0;
#endif /* SC_NO_MODE_CHANGE */
}
@ -320,7 +310,7 @@ sc_set_pixel_mode(scr_stat *scp, struct tty *tp, int xsize, int ysize,
return ENODEV;
#else
video_info_t info;
ksiginfo_t ksi;
struct winsize wsz;
u_char *font;
int prev_ysize;
int error;
@ -425,20 +415,9 @@ sc_set_pixel_mode(scr_stat *scp, struct tty *tp, int xsize, int ysize,
if (tp == NULL)
return 0;
if (tp->t_winsize.ws_col != scp->xsize
|| tp->t_winsize.ws_row != scp->ysize) {
tp->t_winsize.ws_col = scp->xsize;
tp->t_winsize.ws_row = scp->ysize;
if (tp->t_pgrp != NULL) {
ksiginfo_init(&ksi);
ksi.ksi_signo = SIGWINCH;
ksi.ksi_code = SI_KERNEL;
PGRP_LOCK(tp->t_pgrp);
pgsignal(tp->t_pgrp, SIGWINCH, 1, &ksi);
PGRP_UNLOCK(tp->t_pgrp);
}
}
wsz.ws_col = scp->xsize;
wsz.ws_row = scp->ysize;
tty_set_winsize(tp, &wsz);
return 0;
#endif /* SC_PIXEL_MODE */
}

15
sys/kern/tty.c
View File

@ -1381,6 +1381,16 @@ tty_flush(struct tty *tp, int flags)
}
}
void
tty_set_winsize(struct tty *tp, const struct winsize *wsz)
{
if (memcmp(&tp->t_winsize, wsz, sizeof(*wsz)) == 0)
return;
tp->t_winsize = *wsz;
tty_signal_pgrp(tp, SIGWINCH);
}
static int
tty_generic_ioctl(struct tty *tp, u_long cmd, void *data, int fflag,
struct thread *td)
@ -1689,10 +1699,7 @@ tty_generic_ioctl(struct tty *tp, u_long cmd, void *data, int fflag,
return (0);
case TIOCSWINSZ:
/* Set window size. */
if (bcmp(&tp->t_winsize, data, sizeof(struct winsize)) == 0)
return (0);
tp->t_winsize = *(struct winsize*)data;
tty_signal_pgrp(tp, SIGWINCH);
tty_set_winsize(tp, data);
return (0);
case TIOCEXCL:
tp->t_flags |= TF_EXCLUDE;

1
sys/sys/tty.h
View File

@ -192,6 +192,7 @@ int tty_ioctl(struct tty *tp, u_long cmd, void *data, int fflag,
struct thread *td);
int tty_ioctl_compat(struct tty *tp, u_long cmd, caddr_t data,
int fflag, struct thread *td);
void tty_set_winsize(struct tty *tp, const struct winsize *wsz);
void tty_init_console(struct tty *tp, speed_t speed);
void tty_flush(struct tty *tp, int flags);
void tty_hiwat_in_block(struct tty *tp);