From: "Pali Rohár" <pali@kernel.org>
To: Paulo Alcantara <pc@manguebit.org>, Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v7.3 5/9] cifs: Check if server supports EAs before trying to set it for WSL
Date: Mon, 26 Oct 2026 23:25:56 +0100 [thread overview]
Message-ID: <20261026222600.17323-6-pali@kernel.org> (raw)
In-Reply-To: <20261026222600.17323-1-pali@kernel.org>
WSL special files store information into EAs. When EAs are not supported
on the server filesystem then fast fail in mknod_wsl() function.
Signed-off-by: Pali Rohár <pali@kernel.org>
---
fs/smb/client/reparse.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/fs/smb/client/reparse.c b/fs/smb/client/reparse.c
index 577cdf49c047..86eb56dbc81a 100644
--- a/fs/smb/client/reparse.c
+++ b/fs/smb/client/reparse.c
@@ -693,6 +693,13 @@ static int mknod_wsl(unsigned int xid, struct inode *inode,
struct kvec reparse_iov, xattr_iov;
int rc;
+ /*
+ * WSL special files store information into EAs. When EAs are not
+ * supported on the server filesystem then fast fail.
+ */
+ if (!(le32_to_cpu(tcon->fsAttrInfo.Attributes) & FILE_SUPPORTS_EXTENDED_ATTRIBUTES))
+ return -EOPNOTSUPP;
+
rc = wsl_set_reparse_buf(&buf, mode, symname, cifs_sb, &reparse_iov);
if (rc)
return rc;
--
2.20.1
next prev parent reply other threads:[~2026-10-26 22:26 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-26 22:25 [PATCH v7.3 0/9] Various changes Pali Rohár
2026-10-26 22:25 ` [PATCH v7.3 1/9] cifs: Remove code for querying FILE_INFO_STANDARD via CIFSSMBQPathInfo() Pali Rohár
2026-10-26 22:25 ` [PATCH v7.3 2/9] cifs: Remove cifs_backup_query_path_info() and replace it by cifs_query_path_info() Pali Rohár
2026-10-26 22:25 ` [PATCH v7.3 3/9] cifs: Fix validation of EAs for WSL reparse points Pali Rohár
2026-10-26 22:25 ` [PATCH v7.3 4/9] cifs: Validate presence of EA $LXMOD " Pali Rohár
2026-10-26 22:25 ` Pali Rohár [this message]
2026-10-26 22:25 ` [PATCH v7.3 6/9] cifs: Extend ->set_EA() callback to allow operate on reparse point Pali Rohár
2026-10-26 22:25 ` [PATCH v7.3 7/9] cifs: Create native Window socket file compatible also with WSL subsystem Pali Rohár
2026-10-26 22:25 ` [PATCH v7.3 8/9] cifs: Add support for parsing WSL symlinks in version 1 format Pali Rohár
2026-10-27 1:37 ` Namjae Jeon
2026-10-26 22:26 ` [PATCH v7.3 9/9] cifs: Add support for creating " Pali Rohár
2026-10-27 1:38 ` Namjae Jeon
2026-10-27 1:42 ` [PATCH v7.3 0/9] Various changes Namjae Jeon
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