From 45684fd1854bac5defd1158981c98a6fe22fb5a7 Mon Sep 17 00:00:00 2001 From: njl Date: Tue, 15 Oct 2002 21:28:50 +0000 Subject: Return an error if the drive reports heads/sectors that do not make sense. This fixes a divide by zero in fdisk(8) Reviewed by: phk --- sys/geom/geom_dev.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'sys/geom/geom_dev.c') diff --git a/sys/geom/geom_dev.c b/sys/geom/geom_dev.c index 1b30703..8fb6727 100644 --- a/sys/geom/geom_dev.c +++ b/sys/geom/geom_dev.c @@ -245,15 +245,23 @@ g_dev_ioctl(dev_t dev, u_long cmd, caddr_t data, int fflag, struct thread *td) switch (cmd) { case DIOCGSECTORSIZE: error = g_io_getattr("GEOM::sectorsize", cp, &i, data); + if (error == 0 && *(u_int *)data == 0) + error = ENOENT; break; case DIOCGMEDIASIZE: error = g_io_getattr("GEOM::mediasize", cp, &i, data); + if (error == 0 && *(u_int *)data == 0) + error = ENOENT; break; case DIOCGFWSECTORS: error = g_io_getattr("GEOM::fwsectors", cp, &i, data); + if (error == 0 && *(u_int *)data == 0) + error = ENOENT; break; case DIOCGFWHEADS: error = g_io_getattr("GEOM::fwheads", cp, &i, data); + if (error == 0 && *(u_int *)data == 0) + error = ENOENT; break; case DIOCGFRONTSTUFF: error = g_io_getattr("GEOM::frontstuff", cp, &i, data); -- cgit v1.1