diff options
| author | Chen Gang <gang.chen@asianux.com> | 2013-05-16 22:07:22 +0000 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2013-05-23 11:24:57 +0200 |
| commit | 8bc14d25ffb9dfc242d3a877bb4fe683adb27692 (patch) | |
| tree | c7e1e671917dee9b6b5d39cc709f087e8cfbcfee | |
| parent | 00028aa37098168048728acc32ab0206687f2920 (diff) | |
bridge: netfilter: using strlcpy() instead of strncpy()
'name' has already set all zero when it is defined, so not need let
strncpy() to pad it again.
'name' is a string, better always let is NUL terminated, so use
strlcpy() instead of strncpy().
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Acked-by: Bart De Schuymer <bdschuym@pandora.be>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| -rw-r--r-- | net/bridge/netfilter/ebtables.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c index 3d110c4fc78..ac780242838 100644 --- a/net/bridge/netfilter/ebtables.c +++ b/net/bridge/netfilter/ebtables.c @@ -1339,7 +1339,7 @@ static inline int ebt_make_matchname(const struct ebt_entry_match *m, /* ebtables expects 32 bytes long names but xt_match names are 29 bytes long. Copy 29 bytes and fill remaining bytes with zeroes. */ - strncpy(name, m->u.match->name, sizeof(name)); + strlcpy(name, m->u.match->name, sizeof(name)); if (copy_to_user(hlp, name, EBT_FUNCTION_MAXNAMELEN)) return -EFAULT; return 0; @@ -1351,7 +1351,7 @@ static inline int ebt_make_watchername(const struct ebt_entry_watcher *w, char __user *hlp = ubase + ((char *)w - base); char name[EBT_FUNCTION_MAXNAMELEN] = {}; - strncpy(name, w->u.watcher->name, sizeof(name)); + strlcpy(name, w->u.watcher->name, sizeof(name)); if (copy_to_user(hlp , name, EBT_FUNCTION_MAXNAMELEN)) return -EFAULT; return 0; @@ -1377,7 +1377,7 @@ ebt_make_names(struct ebt_entry *e, const char *base, char __user *ubase) ret = EBT_WATCHER_ITERATE(e, ebt_make_watchername, base, ubase); if (ret != 0) return ret; - strncpy(name, t->u.target->name, sizeof(name)); + strlcpy(name, t->u.target->name, sizeof(name)); if (copy_to_user(hlp, name, EBT_FUNCTION_MAXNAMELEN)) return -EFAULT; return 0; |