From cedc019b9f260facfadd20c6c490e403abf292e3 Mon Sep 17 00:00:00 2001 From: Jordan Rife Date: Tue, 3 Oct 2023 20:13:03 -0500 Subject: smb: use kernel_connect() and kernel_bind() Recent changes to kernel_connect() and kernel_bind() ensure that callers are insulated from changes to the address parameter made by BPF SOCK_ADDR hooks. This patch wraps direct calls to ops->connect() and ops->bind() with kernel_connect() and kernel_bind() to ensure that SMB mounts do not see their mount address overwritten in such cases. Link: https://lore.kernel.org/netdev/9944248dba1bce861375fcce9de663934d933ba9.camel@redhat.com/ Cc: # 6.0+ Signed-off-by: Jordan Rife Acked-by: Paulo Alcantara (SUSE) Signed-off-by: Steve French --- fs/smb/client/connect.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c index 3902e90dca6b..ce11165446cf 100644 --- a/fs/smb/client/connect.c +++ b/fs/smb/client/connect.c @@ -2895,9 +2895,9 @@ bind_socket(struct TCP_Server_Info *server) if (server->srcaddr.ss_family != AF_UNSPEC) { /* Bind to the specified local IP address */ struct socket *socket = server->ssocket; - rc = socket->ops->bind(socket, - (struct sockaddr *) &server->srcaddr, - sizeof(server->srcaddr)); + rc = kernel_bind(socket, + (struct sockaddr *) &server->srcaddr, + sizeof(server->srcaddr)); if (rc < 0) { struct sockaddr_in *saddr4; struct sockaddr_in6 *saddr6; @@ -3046,8 +3046,8 @@ generic_ip_connect(struct TCP_Server_Info *server) socket->sk->sk_sndbuf, socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo); - rc = socket->ops->connect(socket, saddr, slen, - server->noblockcnt ? O_NONBLOCK : 0); + rc = kernel_connect(socket, saddr, slen, + server->noblockcnt ? O_NONBLOCK : 0); /* * When mounting SMB root file systems, we do not want to block in * connect. Otherwise bail out and then let cifs_reconnect() perform -- cgit From 3b8bb3171571f92eda863e5f78b063604c61f72a Mon Sep 17 00:00:00 2001 From: Paulo Alcantara Date: Wed, 4 Oct 2023 17:28:38 -0300 Subject: smb: client: do not start laundromat thread on nohandlecache Honor 'nohandlecache' mount option by not starting laundromat thread even when SMB server supports directory leases. Do not waste system resources by having laundromat thread running with no directory caching at all. Fixes: 2da338ff752a ("smb3: do not start laundromat thread when dir leases disabled") Signed-off-by: Paulo Alcantara (SUSE) Signed-off-by: Steve French --- fs/smb/client/connect.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c index ce11165446cf..7b923e36501b 100644 --- a/fs/smb/client/connect.c +++ b/fs/smb/client/connect.c @@ -2474,8 +2474,9 @@ cifs_put_tcon(struct cifs_tcon *tcon) static struct cifs_tcon * cifs_get_tcon(struct cifs_ses *ses, struct smb3_fs_context *ctx) { - int rc, xid; struct cifs_tcon *tcon; + bool nohandlecache; + int rc, xid; tcon = cifs_find_tcon(ses, ctx); if (tcon) { @@ -2493,14 +2494,17 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb3_fs_context *ctx) goto out_fail; } - if (ses->server->capabilities & SMB2_GLOBAL_CAP_DIRECTORY_LEASING) - tcon = tcon_info_alloc(true); + if (ses->server->dialect >= SMB20_PROT_ID && + (ses->server->capabilities & SMB2_GLOBAL_CAP_DIRECTORY_LEASING)) + nohandlecache = ctx->nohandlecache; else - tcon = tcon_info_alloc(false); + nohandlecache = true; + tcon = tcon_info_alloc(!nohandlecache); if (tcon == NULL) { rc = -ENOMEM; goto out_fail; } + tcon->nohandlecache = nohandlecache; if (ctx->snapshot_time) { if (ses->server->vals->protocol_id == 0) { @@ -2662,10 +2666,6 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb3_fs_context *ctx) tcon->nocase = ctx->nocase; tcon->broken_sparse_sup = ctx->no_sparse; tcon->max_cached_dirs = ctx->max_cached_dirs; - if (ses->server->capabilities & SMB2_GLOBAL_CAP_DIRECTORY_LEASING) - tcon->nohandlecache = ctx->nohandlecache; - else - tcon->nohandlecache = true; tcon->nodelete = ctx->nodelete; tcon->local_lease = ctx->local_lease; INIT_LIST_HEAD(&tcon->pending_opens); -- cgit