[PATCH v6 5/5] smb/server: map SET_INFO ENOSPC to disk full

[Huiwen He <huiwen.he@linux.dev>]

From: Huiwen He <hehuiwen@kylinos.cn>

FILE_ALLOCATION_INFORMATION can call vfs_fallocate(). If the allocation
cannot be satisfied, vfs_fallocate() returns -ENOSPC.

smb2_set_info() did not map -ENOSPC, so ksmbd returned a generic SMB error
and the client reported EIO instead of ENOSPC. This makes the ENOSPC step
in xfstests generic/213 fail.

Map -ENOSPC and -EFBIG to STATUS_DISK_FULL in the SET_INFO error path.

Tested with xfstests generic/213 on ksmbd.

Signed-off-by: Huiwen He <hehuiwen@kylinos.cn>
Reviewed-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
---
 fs/smb/server/smb2pdu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c
index 5859fa68bb84..8bd8f348d0e3 100644
--- a/fs/smb/server/smb2pdu.c
+++ b/fs/smb/server/smb2pdu.c
@@ -7077,6 +7077,8 @@ int smb2_set_info(struct ksmbd_work *work)
 		rsp->hdr.Status = STATUS_INVALID_PARAMETER;
 	else if (rc == -EMSGSIZE)
 		rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH;
+	else if (rc == -ENOSPC || rc == -EFBIG)
+		rsp->hdr.Status = STATUS_DISK_FULL;
 	else if (rc == -ESHARE)
 		rsp->hdr.Status = STATUS_SHARING_VIOLATION;
 	else if (rc == -ENOENT)
-- 
2.43.0