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Commit 0ca07731 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki Committed by Linus Torvalds
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[PATCH] vt: add TIOCL_GETKMSGREDIRECT 



Add TIOCL_GETKMSGREDIRECT needed by the userland suspend tool to get the
current value of kmsg_redirect from the kernel so that it can save it and
restore it after resume.

Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Acked-by: default avatarPavel Machek <pavel@suse.cz>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent d32af0fe

drivers/char/vt.c

+4 −0
Original line number Diff line number Diff line
@@ -2328,6 +2328,10 @@ int tioclinux(struct tty_struct *tty, unsigned long arg) 
		case TIOCL_SETVESABLANK:

			set_vesa_blanking(p);

			break;

		case TIOCL_GETKMSGREDIRECT:

			data = kmsg_redirect;

			ret = __put_user(data, p);

			break;

		case TIOCL_SETKMSGREDIRECT:

			if (!capable(CAP_SYS_ADMIN)) {

				ret = -EPERM;

include/linux/tiocl.h

+1 −0
Original line number Diff line number Diff line
@@ -34,5 +34,6 @@ struct tiocl_selection { 
#define TIOCL_SCROLLCONSOLE	13	/* scroll console */

#define TIOCL_BLANKSCREEN	14	/* keep screen blank even if a key is pressed */

#define TIOCL_BLANKEDSCREEN	15	/* return which vt was blanked */

#define TIOCL_GETKMSGREDIRECT	17	/* get the vt the kernel messages are restricted to */



#endif /* _LINUX_TIOCL_H */