diff options
| author | Martin Hostettler <textshell@uchuujin.de> | 2018-12-15 15:34:22 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-18 13:57:27 +0100 |
| commit | 7a99565f87321b456e3469b8e256705f605997d5 (patch) | |
| tree | 5f3e814d82a76db9473eb0c9c8546e8479eccfbb | |
| parent | 5445447b62e0cf69a6f8b62df51c1ef6f2cd56fe (diff) | |
| download | linux-7a99565f87321b456e3469b8e256705f605997d5.tar.bz2 | |
vt: ignore csi sequences with intermediate characters.
Various csi sequences contain intermediate characters between the
parameters and the final character. Introduce a additional state that
cleanly ignores these sequences.
This allows the vt to ignore these sequences used by more capable
terminal implementations such as "request mode", etc.
Signed-off-by: Martin Hostettler <textshell@uchuujin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/vt/vt.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index ec61f8356245..7f340b0aef05 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -2023,7 +2023,7 @@ static void restore_cur(struct vc_data *vc) } enum { ESnormal, ESesc, ESsquare, ESgetpars, ESfunckey, - EShash, ESsetG0, ESsetG1, ESpercent, ESignore, ESnonstd, + EShash, ESsetG0, ESsetG1, ESpercent, EScsiignore, ESnonstd, ESpalette, ESosc }; /* console_lock is held (except via vc_init()) */ @@ -2261,6 +2261,10 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c) vc->vc_par[vc->vc_npar] += c - '0'; return; } + if (c >= 0x20 && c <= 0x2f) { + vc->vc_state = EScsiignore; + return; + } vc->vc_state = ESnormal; switch(c) { case 'h': @@ -2423,6 +2427,11 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c) return; } return; + case EScsiignore: + if (c >= 20 && c <= 0x3f) + return; + vc->vc_state = ESnormal; + return; case ESpercent: vc->vc_state = ESnormal; switch (c) { |