From 84ce981a076c6b2d3efec66bf92a91d1aa80c983 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Sat, 10 Jul 2010 04:31:11 +0000 Subject: [PATCH] isdn: fix strlen() usage There was a missing "else" statement so the original code overflowed if ->master->name was too long. Also the ->slave and ->master buffers can hold names with 9 characters and a NULL so I cleaned it up to allow another character. Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- drivers/isdn/i4l/isdn_net.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/isdn/i4l/isdn_net.c b/drivers/isdn/i4l/isdn_net.c index 8c85d1e88cc6..26d44c3ca1d8 100644 --- a/drivers/isdn/i4l/isdn_net.c +++ b/drivers/isdn/i4l/isdn_net.c @@ -2924,16 +2924,17 @@ isdn_net_getcfg(isdn_net_ioctl_cfg * cfg) cfg->dialtimeout = lp->dialtimeout >= 0 ? lp->dialtimeout / HZ : -1; cfg->dialwait = lp->dialwait / HZ; if (lp->slave) { - if (strlen(lp->slave->name) > 8) + if (strlen(lp->slave->name) >= 10) strcpy(cfg->slave, "too-long"); else strcpy(cfg->slave, lp->slave->name); } else cfg->slave[0] = '\0'; if (lp->master) { - if (strlen(lp->master->name) > 8) + if (strlen(lp->master->name) >= 10) strcpy(cfg->master, "too-long"); - strcpy(cfg->master, lp->master->name); + else + strcpy(cfg->master, lp->master->name); } else cfg->master[0] = '\0'; return 0; -- 2.20.1