Linux-Bluetooth Archive on lore.kernel.org
 help / color / Atom feed
From: Christoph Hellwig <hch@lst.de>
To: "David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
	Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
	Eric Dumazet <edumazet@google.com>
Cc: linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
	netdev@vger.kernel.org, bpf@vger.kernel.org,
	netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
	linux-sctp@vger.kernel.org, linux-hams@vger.kernel.org,
	linux-bluetooth@vger.kernel.org,
	bridge@lists.linux-foundation.org, linux-can@vger.kernel.org,
	dccp@vger.kernel.org, linux-decnet-user@lists.sourceforge.net,
	linux-wpan@vger.kernel.org, linux-s390@vger.kernel.org,
	mptcp@lists.01.org, lvs-devel@vger.kernel.org,
	rds-devel@oss.oracle.com, linux-afs@lists.infradead.org,
	tipc-discussion@lists.sourceforge.net, linux-x25@vger.kernel.org
Subject: [PATCH 11/26] netfilter: switch xt_copy_counters to sockptr_t
Date: Thu, 23 Jul 2020 08:08:53 +0200
Message-ID: <20200723060908.50081-12-hch@lst.de> (raw)
In-Reply-To: <20200723060908.50081-1-hch@lst.de>

Pass a sockptr_t to prepare for set_fs-less handling of the kernel
pointer from bpf-cgroup.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 include/linux/netfilter/x_tables.h |  4 ++--
 net/ipv4/netfilter/arp_tables.c    |  7 +++----
 net/ipv4/netfilter/ip_tables.c     |  7 +++----
 net/ipv6/netfilter/ip6_tables.c    |  6 +++---
 net/netfilter/x_tables.c           | 20 ++++++++++----------
 5 files changed, 21 insertions(+), 23 deletions(-)

diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
index b8b943ee7b8b66..5deb099d156dcb 100644
--- a/include/linux/netfilter/x_tables.h
+++ b/include/linux/netfilter/x_tables.h
@@ -301,8 +301,8 @@ int xt_target_to_user(const struct xt_entry_target *t,
 int xt_data_to_user(void __user *dst, const void *src,
 		    int usersize, int size, int aligned_size);
 
-void *xt_copy_counters_from_user(const void __user *user, unsigned int len,
-				 struct xt_counters_info *info);
+void *xt_copy_counters(sockptr_t arg, unsigned int len,
+		       struct xt_counters_info *info);
 struct xt_counters *xt_counters_alloc(unsigned int counters);
 
 struct xt_table *xt_register_table(struct net *net,
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index 2c8a4dad39d748..6d24b686c7f00a 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -996,8 +996,7 @@ static int do_replace(struct net *net, const void __user *user,
 	return ret;
 }
 
-static int do_add_counters(struct net *net, const void __user *user,
-			   unsigned int len)
+static int do_add_counters(struct net *net, sockptr_t arg, unsigned int len)
 {
 	unsigned int i;
 	struct xt_counters_info tmp;
@@ -1008,7 +1007,7 @@ static int do_add_counters(struct net *net, const void __user *user,
 	struct arpt_entry *iter;
 	unsigned int addend;
 
-	paddc = xt_copy_counters_from_user(user, len, &tmp);
+	paddc = xt_copy_counters(arg, len, &tmp);
 	if (IS_ERR(paddc))
 		return PTR_ERR(paddc);
 
@@ -1420,7 +1419,7 @@ static int do_arpt_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned
 		break;
 
 	case ARPT_SO_SET_ADD_COUNTERS:
-		ret = do_add_counters(sock_net(sk), user, len);
+		ret = do_add_counters(sock_net(sk), USER_SOCKPTR(user), len);
 		break;
 
 	default:
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 161901dd1cae7f..4697d09c98dc3e 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -1151,8 +1151,7 @@ do_replace(struct net *net, const void __user *user, unsigned int len)
 }
 
 static int
-do_add_counters(struct net *net, const void __user *user,
-		unsigned int len)
+do_add_counters(struct net *net, sockptr_t arg, unsigned int len)
 {
 	unsigned int i;
 	struct xt_counters_info tmp;
@@ -1163,7 +1162,7 @@ do_add_counters(struct net *net, const void __user *user,
 	struct ipt_entry *iter;
 	unsigned int addend;
 
-	paddc = xt_copy_counters_from_user(user, len, &tmp);
+	paddc = xt_copy_counters(arg, len, &tmp);
 	if (IS_ERR(paddc))
 		return PTR_ERR(paddc);
 
@@ -1629,7 +1628,7 @@ do_ipt_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len)
 		break;
 
 	case IPT_SO_SET_ADD_COUNTERS:
-		ret = do_add_counters(sock_net(sk), user, len);
+		ret = do_add_counters(sock_net(sk), USER_SOCKPTR(user), len);
 		break;
 
 	default:
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index fd1f8f93123188..a787aba30e2db7 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -1168,7 +1168,7 @@ do_replace(struct net *net, const void __user *user, unsigned int len)
 }
 
 static int
-do_add_counters(struct net *net, const void __user *user, unsigned int len)
+do_add_counters(struct net *net, sockptr_t arg, unsigned int len)
 {
 	unsigned int i;
 	struct xt_counters_info tmp;
@@ -1179,7 +1179,7 @@ do_add_counters(struct net *net, const void __user *user, unsigned int len)
 	struct ip6t_entry *iter;
 	unsigned int addend;
 
-	paddc = xt_copy_counters_from_user(user, len, &tmp);
+	paddc = xt_copy_counters(arg, len, &tmp);
 	if (IS_ERR(paddc))
 		return PTR_ERR(paddc);
 	t = xt_find_table_lock(net, AF_INET6, tmp.name);
@@ -1637,7 +1637,7 @@ do_ip6t_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len)
 		break;
 
 	case IP6T_SO_SET_ADD_COUNTERS:
-		ret = do_add_counters(sock_net(sk), user, len);
+		ret = do_add_counters(sock_net(sk), USER_SOCKPTR(user), len);
 		break;
 
 	default:
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index 32bab45af7e415..b97eb4b538fd4e 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -1028,9 +1028,9 @@ int xt_check_target(struct xt_tgchk_param *par,
 EXPORT_SYMBOL_GPL(xt_check_target);
 
 /**
- * xt_copy_counters_from_user - copy counters and metadata from userspace
+ * xt_copy_counters - copy counters and metadata from a sockptr_t
  *
- * @user: src pointer to userspace memory
+ * @arg: src sockptr
  * @len: alleged size of userspace memory
  * @info: where to store the xt_counters_info metadata
  *
@@ -1047,8 +1047,8 @@ EXPORT_SYMBOL_GPL(xt_check_target);
  * Return: returns pointer that caller has to test via IS_ERR().
  * If IS_ERR is false, caller has to vfree the pointer.
  */
-void *xt_copy_counters_from_user(const void __user *user, unsigned int len,
-				 struct xt_counters_info *info)
+void *xt_copy_counters(sockptr_t arg, unsigned int len,
+		       struct xt_counters_info *info)
 {
 	void *mem;
 	u64 size;
@@ -1062,12 +1062,12 @@ void *xt_copy_counters_from_user(const void __user *user, unsigned int len,
 			return ERR_PTR(-EINVAL);
 
 		len -= sizeof(compat_tmp);
-		if (copy_from_user(&compat_tmp, user, sizeof(compat_tmp)) != 0)
+		if (copy_from_sockptr(&compat_tmp, arg, sizeof(compat_tmp)) != 0)
 			return ERR_PTR(-EFAULT);
 
 		memcpy(info->name, compat_tmp.name, sizeof(info->name) - 1);
 		info->num_counters = compat_tmp.num_counters;
-		user += sizeof(compat_tmp);
+		sockptr_advance(arg, sizeof(compat_tmp));
 	} else
 #endif
 	{
@@ -1075,10 +1075,10 @@ void *xt_copy_counters_from_user(const void __user *user, unsigned int len,
 			return ERR_PTR(-EINVAL);
 
 		len -= sizeof(*info);
-		if (copy_from_user(info, user, sizeof(*info)) != 0)
+		if (copy_from_sockptr(info, arg, sizeof(*info)) != 0)
 			return ERR_PTR(-EFAULT);
 
-		user += sizeof(*info);
+		sockptr_advance(arg, sizeof(*info));
 	}
 	info->name[sizeof(info->name) - 1] = '\0';
 
@@ -1092,13 +1092,13 @@ void *xt_copy_counters_from_user(const void __user *user, unsigned int len,
 	if (!mem)
 		return ERR_PTR(-ENOMEM);
 
-	if (copy_from_user(mem, user, len) == 0)
+	if (copy_from_sockptr(mem, arg, len) == 0)
 		return mem;
 
 	vfree(mem);
 	return ERR_PTR(-EFAULT);
 }
-EXPORT_SYMBOL_GPL(xt_copy_counters_from_user);
+EXPORT_SYMBOL_GPL(xt_copy_counters);
 
 #ifdef CONFIG_COMPAT
 int xt_compat_target_offset(const struct xt_target *target)
-- 
2.27.0


  parent reply index

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-23  6:08 get rid of the address_space override in setsockopt v2 Christoph Hellwig
2020-07-23  6:08 ` [PATCH 01/26] bpfilter: fix up a sparse annotation Christoph Hellwig
2020-07-23 11:14   ` Luc Van Oostenryck
2020-07-23  6:08 ` [PATCH 02/26] net/bpfilter: split __bpfilter_process_sockopt Christoph Hellwig
2020-07-23  6:08 ` [PATCH 03/26] bpfilter: reject kernel addresses Christoph Hellwig
2020-07-23 14:42   ` David Laight
2020-07-23 14:44     ` 'Christoph Hellwig'
2020-07-23 14:56       ` David Laight
2020-07-23  6:08 ` [PATCH 04/26] net: add a new sockptr_t type Christoph Hellwig
2020-07-23 15:40   ` Jan Engelhardt
2020-07-23 16:40   ` Eric Dumazet
2020-07-23 16:44     ` Christoph Hellwig
2020-07-23  6:08 ` [PATCH 05/26] net: switch copy_bpf_fprog_from_user to sockptr_t Christoph Hellwig
2020-07-23  6:08 ` [PATCH 06/26] net: switch sock_setbindtodevice " Christoph Hellwig
2020-07-23  6:08 ` [PATCH 07/26] net: switch sock_set_timeout " Christoph Hellwig
2020-07-23  6:08 ` [PATCH 08/26] " Christoph Hellwig
2020-07-23  8:39   ` [MPTCP] " Matthieu Baerts
2020-07-23  6:08 ` [PATCH 09/26] net/xfrm: switch xfrm_user_policy " Christoph Hellwig
2020-07-23  6:08 ` [PATCH 10/26] netfilter: remove the unused user argument to do_update_counters Christoph Hellwig
2020-07-23  6:08 ` Christoph Hellwig [this message]
2020-07-23  6:08 ` [PATCH 12/26] netfilter: switch nf_setsockopt to sockptr_t Christoph Hellwig
2020-07-27 15:03   ` Jason A. Donenfeld
2020-07-27 15:06     ` Christoph Hellwig
2020-07-27 16:16       ` Jason A. Donenfeld
2020-07-27 16:23         ` Christoph Hellwig
2020-07-28  8:07           ` David Laight
2020-07-28  8:17             ` Jason A. Donenfeld
2020-07-27 16:16     ` Christoph Hellwig
2020-07-27 16:21       ` Jason A. Donenfeld
2020-07-23  6:08 ` [PATCH 13/26] bpfilter: switch bpfilter_ip_set_sockopt " Christoph Hellwig
2020-07-23 11:16   ` David Laight
2020-07-23 11:44     ` 'Christoph Hellwig'
2020-07-23  6:08 ` [PATCH 14/26] net/ipv4: switch ip_mroute_setsockopt " Christoph Hellwig
2020-07-23  6:08 ` [PATCH 15/26] net/ipv4: merge ip_options_get and ip_options_get_from_user Christoph Hellwig
2020-07-23  6:08 ` [PATCH 16/26] net/ipv4: switch do_ip_setsockopt to sockptr_t Christoph Hellwig
2020-07-23  6:08 ` [PATCH 17/26] net/ipv6: switch ip6_mroute_setsockopt " Christoph Hellwig
2020-07-23  6:09 ` [PATCH 18/26] net/ipv6: split up ipv6_flowlabel_opt Christoph Hellwig
2020-07-23  6:09 ` [PATCH 19/26] net/ipv6: switch ipv6_flowlabel_opt to sockptr_t Christoph Hellwig
2020-07-27 12:15   ` Ido Schimmel
2020-07-27 13:00     ` Christoph Hellwig
2020-07-27 13:33       ` Ido Schimmel
2020-07-27 16:15         ` Christoph Hellwig
2020-07-27 18:22           ` Ido Schimmel
2020-07-27 13:24     ` David Laight
2020-07-23  6:09 ` [PATCH 20/26] net/ipv6: factor out a ipv6_set_opt_hdr helper Christoph Hellwig
2020-07-23  6:09 ` [PATCH 21/26] net/ipv6: switch do_ipv6_setsockopt to sockptr_t Christoph Hellwig
2020-07-23  6:09 ` [PATCH 22/26] net/udp: switch udp_lib_setsockopt " Christoph Hellwig
2020-07-23  6:09 ` [PATCH 23/26] net/tcp: switch ->md5_parse " Christoph Hellwig
2020-07-23  6:09 ` [PATCH 24/26] net/tcp: switch do_tcp_setsockopt " Christoph Hellwig
2020-07-23  6:09 ` [PATCH 25/26] net: pass a sockptr_t into ->setsockopt Christoph Hellwig
2020-07-23  8:39   ` [MPTCP] " Matthieu Baerts
2020-08-06 22:21   ` Eric Dumazet
2020-08-07  7:21     ` Christoph Hellwig
2020-08-07  9:18     ` David Laight
2020-08-07 18:29       ` Eric Dumazet
2020-08-08 13:54         ` David Laight
2020-07-23  6:09 ` [PATCH 26/26] net: optimize the sockptr_t for unified kernel/user address spaces Christoph Hellwig
2020-07-24 22:43 ` get rid of the address_space override in setsockopt v2 David Miller
2020-07-26  7:03   ` Christoph Hellwig
2020-07-26  7:08     ` Andreas Schwab
2020-07-26  7:46     ` David Miller
2020-07-27  9:51   ` David Laight
2020-07-27 13:48     ` Al Viro
2020-07-27 14:09       ` David Laight

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200723060908.50081-12-hch@lst.de \
    --to=hch@lst.de \
    --cc=ast@kernel.org \
    --cc=bpf@vger.kernel.org \
    --cc=bridge@lists.linux-foundation.org \
    --cc=coreteam@netfilter.org \
    --cc=daniel@iogearbox.net \
    --cc=davem@davemloft.net \
    --cc=dccp@vger.kernel.org \
    --cc=edumazet@google.com \
    --cc=kuba@kernel.org \
    --cc=kuznet@ms2.inr.ac.ru \
    --cc=linux-afs@lists.infradead.org \
    --cc=linux-bluetooth@vger.kernel.org \
    --cc=linux-can@vger.kernel.org \
    --cc=linux-crypto@vger.kernel.org \
    --cc=linux-decnet-user@lists.sourceforge.net \
    --cc=linux-hams@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-s390@vger.kernel.org \
    --cc=linux-sctp@vger.kernel.org \
    --cc=linux-wpan@vger.kernel.org \
    --cc=linux-x25@vger.kernel.org \
    --cc=lvs-devel@vger.kernel.org \
    --cc=mptcp@lists.01.org \
    --cc=netdev@vger.kernel.org \
    --cc=netfilter-devel@vger.kernel.org \
    --cc=rds-devel@oss.oracle.com \
    --cc=tipc-discussion@lists.sourceforge.net \
    --cc=yoshfuji@linux-ipv6.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-Bluetooth Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-bluetooth/0 linux-bluetooth/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-bluetooth linux-bluetooth/ https://lore.kernel.org/linux-bluetooth \
		linux-bluetooth@vger.kernel.org
	public-inbox-index linux-bluetooth

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-bluetooth


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git