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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Paulo Alcantara <pc@cjr.nz>, Aurelien Aptel <aaptel@suse.com>,
	Steve French <stfrench@microsoft.com>,
	Sasha Levin <sashal@kernel.org>,
	linux-cifs@vger.kernel.org, samba-technical@lists.samba.org
Subject: [PATCH AUTOSEL 5.13 39/59] cifs: fix check of dfs interlinks
Date: Mon,  5 Jul 2021 11:27:55 -0400	[thread overview]
Message-ID: <20210705152815.1520546-39-sashal@kernel.org> (raw)
In-Reply-To: <20210705152815.1520546-1-sashal@kernel.org>

From: Paulo Alcantara <pc@cjr.nz>

[ Upstream commit 889c2a700799f3b6f82210925e1faf4a9b833c4a ]

Interlink is a special type of DFS link that resolves to a different
DFS domain-based namespace.  To determine whether it is an interlink
or not, check if ReferralServers and StorageServers bits are set to 1
and 0 respectively in ReferralHeaderFlags, as specified in MS-DFSC
3.1.5.4.5 Determining Whether a Referral Response is an Interlink.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/cifs/dfs_cache.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/fs/cifs/dfs_cache.c b/fs/cifs/dfs_cache.c
index b1fa30fefe1f..8e16ee1e5fd1 100644
--- a/fs/cifs/dfs_cache.c
+++ b/fs/cifs/dfs_cache.c
@@ -25,8 +25,7 @@
 #define CACHE_HTABLE_SIZE 32
 #define CACHE_MAX_ENTRIES 64
 
-#define IS_INTERLINK_SET(v) ((v) & (DFSREF_REFERRAL_SERVER | \
-				    DFSREF_STORAGE_SERVER))
+#define IS_DFS_INTERLINK(v) (((v) & DFSREF_REFERRAL_SERVER) && !((v) & DFSREF_STORAGE_SERVER))
 
 struct cache_dfs_tgt {
 	char *name;
@@ -171,7 +170,7 @@ static int dfscache_proc_show(struct seq_file *m, void *v)
 				   "cache entry: path=%s,type=%s,ttl=%d,etime=%ld,hdr_flags=0x%x,ref_flags=0x%x,interlink=%s,path_consumed=%d,expired=%s\n",
 				   ce->path, ce->srvtype == DFS_TYPE_ROOT ? "root" : "link",
 				   ce->ttl, ce->etime.tv_nsec, ce->ref_flags, ce->hdr_flags,
-				   IS_INTERLINK_SET(ce->hdr_flags) ? "yes" : "no",
+				   IS_DFS_INTERLINK(ce->hdr_flags) ? "yes" : "no",
 				   ce->path_consumed, cache_entry_expired(ce) ? "yes" : "no");
 
 			list_for_each_entry(t, &ce->tlist, list) {
@@ -240,7 +239,7 @@ static inline void dump_ce(const struct cache_entry *ce)
 		 ce->srvtype == DFS_TYPE_ROOT ? "root" : "link", ce->ttl,
 		 ce->etime.tv_nsec,
 		 ce->hdr_flags, ce->ref_flags,
-		 IS_INTERLINK_SET(ce->hdr_flags) ? "yes" : "no",
+		 IS_DFS_INTERLINK(ce->hdr_flags) ? "yes" : "no",
 		 ce->path_consumed,
 		 cache_entry_expired(ce) ? "yes" : "no");
 	dump_tgts(ce);
-- 
2.30.2


  parent reply	other threads:[~2021-07-05 15:29 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-05 15:27 [PATCH AUTOSEL 5.13 01/59] HID: do not use down_interruptible() when unbinding devices Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 02/59] EDAC/ti: Add missing MODULE_DEVICE_TABLE Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 03/59] ACPI: PM: s2idle: Add missing LPS0 functions for AMD Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 04/59] ACPI: scan: Rearrange dep_unmet initialization Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 05/59] ACPI: processor idle: Fix up C-state latency if not ordered Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 06/59] hv_utils: Fix passing zero to 'PTR_ERR' warning Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 07/59] lib: vsprintf: Fix handling of number field widths in vsscanf Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 08/59] Input: goodix - platform/x86: touchscreen_dmi - Move upside down quirks to touchscreen_dmi.c Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 09/59] platform/x86: touchscreen_dmi: Add an extra entry for the upside down Goodix touchscreen on Teclast X89 tablets Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 10/59] platform/x86: touchscreen_dmi: Add info for the Goodix GT912 panel of TM800A550L tablets Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 11/59] ACPI: EC: Make more Asus laptops use ECDT _GPE Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 12/59] block_dump: remove block_dump feature in mark_inode_dirty() Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 13/59] blk-mq: grab rq->refcount before calling ->fn in blk_mq_tagset_busy_iter Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 14/59] blk-mq: clear stale request in tags->rq[] before freeing one request pool Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 15/59] fs: dlm: fix srcu read lock usage Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 16/59] fs: dlm: reconnect if socket error report occurs Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 17/59] fs: dlm: cancel work sync othercon Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 18/59] fs: dlm: fix connection tcp EOF handling Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 19/59] random32: Fix implicit truncation warning in prandom_seed_state() Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 20/59] open: don't silently ignore unknown O-flags in openat2() Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 21/59] drivers: hv: Fix missing error code in vmbus_connect() Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 22/59] fs: dlm: fix lowcomms_start error case Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 23/59] fs: dlm: fix memory leak when fenced Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 24/59] ACPICA: Fix memory leak caused by _CID repair function Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 25/59] ACPI: bus: Call kobject_put() in acpi_init() error path Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 26/59] ACPI: resources: Add checks for ACPI IRQ override Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 27/59] HID: hid-input: add Surface Go battery quirk Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 28/59] HID: sony: fix freeze when inserting ghlive ps3/wii dongles Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 29/59] block: fix race between adding/removing rq qos and normal IO Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 30/59] platform/x86: asus-nb-wmi: Revert "Drop duplicate DMI quirk structures" Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 31/59] platform/x86: asus-nb-wmi: Revert "add support for ASUS ROG Zephyrus G14 and G15" Sasha Levin
2021-07-05 17:08   ` Hans de Goede
2021-07-05 17:09     ` Hans de Goede
2021-07-09 22:50       ` Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 32/59] platform/x86: toshiba_acpi: Fix missing error code in toshiba_acpi_setup_keyboard() Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 33/59] nvme-pci: fix var. type for increasing cq_head Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 34/59] nvmet-fc: do not check for invalid target port in nvmet_fc_handle_fcp_rqst() Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 35/59] EDAC/Intel: Do not load EDAC driver when running as a guest Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 36/59] tools/power/x86/intel-speed-select: Fix uncore memory frequency display Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 37/59] PCI: hv: Add check for hyperv_initialized in init_hv_pci_drv() Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 38/59] cifs: improve fallocate emulation Sasha Levin
2021-07-05 15:27 ` Sasha Levin [this message]
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 40/59] cifs: retry lookup and readdir when EAGAIN is returned Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 41/59] smb3: fix uninitialized value for port in witness protocol move Sasha Levin
2021-07-05 15:27 ` [PATCH AUTOSEL 5.13 42/59] cifs: fix SMB1 error path in cifs_get_file_info_unix Sasha Levin

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