mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 17:08:10 +00:00
ba7bdec3cb
strlcpy() reads the entire source buffer first. This read may exceed the destination size limit. This is both inefficient and can lead to linear read overflows if a source string is not NUL-terminated [1]. In an effort to remove strlcpy() completely [2], replace strlcpy() here with strscpy(). No return values were used, so direct replacement is safe. [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy [2] https://github.com/KSPP/linux/issues/89 Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM fib6
|
|
|
|
#if !defined(_TRACE_FIB6_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_FIB6_H
|
|
|
|
#include <linux/in6.h>
|
|
#include <net/flow.h>
|
|
#include <net/ip6_fib.h>
|
|
#include <linux/tracepoint.h>
|
|
|
|
TRACE_EVENT(fib6_table_lookup,
|
|
|
|
TP_PROTO(const struct net *net, const struct fib6_result *res,
|
|
struct fib6_table *table, const struct flowi6 *flp),
|
|
|
|
TP_ARGS(net, res, table, flp),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( u32, tb_id )
|
|
__field( int, err )
|
|
__field( int, oif )
|
|
__field( int, iif )
|
|
__field( __u8, tos )
|
|
__field( __u8, scope )
|
|
__field( __u8, flags )
|
|
__array( __u8, src, 16 )
|
|
__array( __u8, dst, 16 )
|
|
__field( u16, sport )
|
|
__field( u16, dport )
|
|
__field( u8, proto )
|
|
__field( u8, rt_type )
|
|
__array( char, name, IFNAMSIZ )
|
|
__array( __u8, gw, 16 )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
struct in6_addr *in6;
|
|
|
|
__entry->tb_id = table->tb6_id;
|
|
__entry->err = ip6_rt_type_to_error(res->fib6_type);
|
|
__entry->oif = flp->flowi6_oif;
|
|
__entry->iif = flp->flowi6_iif;
|
|
__entry->tos = ip6_tclass(flp->flowlabel);
|
|
__entry->scope = flp->flowi6_scope;
|
|
__entry->flags = flp->flowi6_flags;
|
|
|
|
in6 = (struct in6_addr *)__entry->src;
|
|
*in6 = flp->saddr;
|
|
|
|
in6 = (struct in6_addr *)__entry->dst;
|
|
*in6 = flp->daddr;
|
|
|
|
__entry->proto = flp->flowi6_proto;
|
|
if (__entry->proto == IPPROTO_TCP ||
|
|
__entry->proto == IPPROTO_UDP) {
|
|
__entry->sport = ntohs(flp->fl6_sport);
|
|
__entry->dport = ntohs(flp->fl6_dport);
|
|
} else {
|
|
__entry->sport = 0;
|
|
__entry->dport = 0;
|
|
}
|
|
|
|
if (res->nh && res->nh->fib_nh_dev) {
|
|
strscpy(__entry->name, res->nh->fib_nh_dev->name, IFNAMSIZ);
|
|
} else {
|
|
strcpy(__entry->name, "-");
|
|
}
|
|
if (res->f6i == net->ipv6.fib6_null_entry) {
|
|
in6 = (struct in6_addr *)__entry->gw;
|
|
*in6 = in6addr_any;
|
|
} else if (res->nh) {
|
|
in6 = (struct in6_addr *)__entry->gw;
|
|
*in6 = res->nh->fib_nh_gw6;
|
|
}
|
|
),
|
|
|
|
TP_printk("table %3u oif %d iif %d proto %u %pI6c/%u -> %pI6c/%u tos %d scope %d flags %x ==> dev %s gw %pI6c err %d",
|
|
__entry->tb_id, __entry->oif, __entry->iif, __entry->proto,
|
|
__entry->src, __entry->sport, __entry->dst, __entry->dport,
|
|
__entry->tos, __entry->scope, __entry->flags,
|
|
__entry->name, __entry->gw, __entry->err)
|
|
);
|
|
|
|
#endif /* _TRACE_FIB6_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|