diff options
| author | наб <nabijaczleweli@nabijaczleweli.xyz> | 2022-09-02 15:07:16 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx.manpages@gmail.com> | 2022-09-02 21:05:55 +0200 |
| commit | 3b33bf22dd77c9099e5040fe9f3882bb5753ca2f (patch) | |
| tree | b218b332533e2a8c5e947d25b1367947cf266e9d | |
| parent | 8b78627be4ec6c179f861f8683c2ba63db27ef1f (diff) | |
ioctl_console.2: document all extant TIOCLINUX subcodes as of 6.0 (2.6.17)
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Cc: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
| -rw-r--r-- | man2/ioctl_console.2 | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/man2/ioctl_console.2 b/man2/ioctl_console.2 index 0c25edf67..145e98081 100644 --- a/man2/ioctl_console.2 +++ b/man2/ioctl_console.2 @@ -787,8 +787,49 @@ blank_timer times out, then you choose this option. Powering down frequently will damage the monitor.) (Since Linux 1.1.76.) .RE +.TP +.BR TIOCLINUX ", " subcode = TIOCL_SETKMSGREDIRECT +Change target of kernel messages ("console"): +by default, and if this is set to +.BR 0 , +messages are written to the currently active VT. +The VT to write to is a single byte following +.BR subcode . +(Since Linux 2.5.36.) +.TP +.BR TIOCLINUX ", " subcode = TIOCL_GETFGCONSOLE +Returns the number of VT currently in foreground. +(Since Linux 2.5.36.) +.TP +.BR TIOCLINUX ", " subcode = TIOCL_SCROLLCONSOLE +Scroll the foreground VT by the specified amount of +.I lines +down, +or half the screen if +.BR 0 . +.I lines +is *(((int32_t *)&subcode) + 1). +(Since Linux 2.5.67.) +.TP +.BR TIOCLINUX ", " subcode = TIOCL_BLANKSCREEN +Blank the foreground VT, ignoring "pokes" (typing): +can only be unblanked explicitly (by switching VTs, to text mode, etc.). +(Since Linux 2.5.71.) +.TP +.BR TIOCLINUX ", " subcode = TIOCL_BLANKEDSCREEN +Returns the number of VT currently blanked, +.B 0 +if none. +(Since Linux 2.5.71.) +.TP +.BR TIOCLINUX ", " subcode = 16 +Never used. +.TP +.BR TIOCLINUX ", " subcode = TIOCL_GETKMSGREDIRECT +Returns target of kernel messages. +(Since Linux 2.6.17.) .SH RETURN VALUE -On success, 0 is returned. +On success, 0 is returned (except where indicated). On failure, \-1 is returned, and .I errno is set to indicate the error. |