From ec12068f10c1b8834e87e2bb195311d71dd0321f Mon Sep 17 00:00:00 2001 From: =?utf8?q?Pali=20Roh=C3=A1r?= Date: Mon, 30 Dec 2024 20:54:11 +0100 Subject: [PATCH] cifs: Fix calling CIFSFindFirst() for root path without msearch MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit [ Upstream commit b460249b9a1dab7a9f58483e5349d045ad6d585c ] To query root path (without msearch wildcard) it is needed to send pattern '\' instead of '' (empty string). This allows to use CIFSFindFirst() to query information about root path which is being used in followup changes. This change fixes the stat() syscall called on the root path on the mount. It is because stat() syscall uses the cifs_query_path_info() function and it can fallback to the CIFSFindFirst() usage with msearch=false. Signed-off-by: Pali Rohár Signed-off-by: Steve French Signed-off-by: Sasha Levin --- fs/smb/client/cifssmb.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/fs/smb/client/cifssmb.c b/fs/smb/client/cifssmb.c index e3d9367eaec37..8a257cb29c955 100644 --- a/fs/smb/client/cifssmb.c +++ b/fs/smb/client/cifssmb.c @@ -4028,6 +4028,12 @@ findFirstRetry: pSMB->FileName[name_len] = 0; pSMB->FileName[name_len+1] = 0; name_len += 2; + } else if (!searchName[0]) { + pSMB->FileName[0] = CIFS_DIR_SEP(cifs_sb); + pSMB->FileName[1] = 0; + pSMB->FileName[2] = 0; + pSMB->FileName[3] = 0; + name_len = 4; } } else { name_len = copy_path_name(pSMB->FileName, searchName); @@ -4039,6 +4045,10 @@ findFirstRetry: pSMB->FileName[name_len] = '*'; pSMB->FileName[name_len+1] = 0; name_len += 2; + } else if (!searchName[0]) { + pSMB->FileName[0] = CIFS_DIR_SEP(cifs_sb); + pSMB->FileName[1] = 0; + name_len = 2; } } -- 2.47.3