From 816d8d7a668b541cee99469edb90e4917ea11c3e Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Mon, 16 Apr 2018 21:48:32 +0200 Subject: setlogcons: open /dev/ttyN for "setlogcons N", not /dev/tty1 Signed-off-by: Denys Vlasenko --- console-tools/setlogcons.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'console-tools') diff --git a/console-tools/setlogcons.c b/console-tools/setlogcons.c index 6778a4d2b..0fad6600a 100644 --- a/console-tools/setlogcons.c +++ b/console-tools/setlogcons.c @@ -41,6 +41,7 @@ int setlogcons_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int setlogcons_main(int argc UNUSED_PARAM, char **argv) { + char *devname; struct { char fn; char subarg; @@ -52,7 +53,14 @@ int setlogcons_main(int argc UNUSED_PARAM, char **argv) if (argv[1]) arg.subarg = xatou_range(argv[1], 0, 63); - xioctl(xopen(VC_1, O_RDONLY), TIOCLINUX, &arg); + /* Can just call it on "/dev/tty1" always, but... + * in my testing, inactive (never opened) VTs are not + * redirected to, despite ioctl not failing. + * + * By using "/dev/ttyN", ensure it is activated. + */ + devname = xasprintf("/dev/tty%u", arg.subarg); + xioctl(xopen(devname, O_RDONLY), TIOCLINUX, &arg); return EXIT_SUCCESS; } -- cgit v1.2.3