diff options
| author | brian <brian@FreeBSD.org> | 1997-07-09 14:10:19 +0000 |
|---|---|---|
| committer | brian <brian@FreeBSD.org> | 1997-07-09 14:10:19 +0000 |
| commit | 7bafd4334cb27ab2d273b3058f63bee060cdf23a (patch) | |
| tree | 220758544bc86b3776c2011995371d3e7bf95fd0 /sys/isa | |
| parent | f4e6702e758e400187f4cbce4dfdf373c297b810 (diff) | |
| download | FreeBSD-src-7bafd4334cb27ab2d273b3058f63bee060cdf23a.zip FreeBSD-src-7bafd4334cb27ab2d273b3058f63bee060cdf23a.tar.gz | |
Don't allow CONS_HISTORY ioctl to alter history pointers
while in "scroll mode" (return EBUSY).
Suggested by: Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
Diffstat (limited to 'sys/isa')
| -rw-r--r-- | sys/isa/syscons.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/isa/syscons.c b/sys/isa/syscons.c index 7c4b173..7b5cafb 100644 --- a/sys/isa/syscons.c +++ b/sys/isa/syscons.c @@ -25,7 +25,7 @@ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * - * $Id: syscons.c,v 1.221 1997/07/07 13:42:42 brian Exp $ + * $Id: syscons.c,v 1.222 1997/07/08 13:38:58 brian Exp $ */ #include "sc.h" @@ -958,6 +958,8 @@ scioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p) case CONS_HISTORY: /* set history size */ if (*data) { + if (cur_console->status & BUFFER_SAVED) + return EBUSY; if (scp->history != NULL) free(scp->history, M_DEVBUF); scp->history_size = *(int*)data; |
