diff mbox series

[v5,03/20] ksmbd: use correct basic info level in set_file_basic_info()

Message ID 20211001120421.327245-4-slow@samba.org
State New
Headers show
Series Buffer validation patches | expand

Commit Message

Ralph Boehme Oct. 1, 2021, 12:04 p.m. UTC 
From: Namjae Jeon <linkinjeon@kernel.org>

Use correct basic info level in set/get_file_basic_info().

Reviewed-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
---
 fs/ksmbd/smb2pdu.c | 13 ++++++-------
 fs/ksmbd/smb2pdu.h |  9 +++++++++
 2 files changed, 15 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c
index 9c0878862820..d874813aca90 100644
--- a/fs/ksmbd/smb2pdu.c
+++ b/fs/ksmbd/smb2pdu.c
@@ -4161,7 +4161,7 @@  static void get_file_access_info(struct smb2_query_info_rsp *rsp,
 static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
 			       struct ksmbd_file *fp, void *rsp_org)
 {
-	struct smb2_file_all_info *basic_info;
+	struct smb2_file_basic_info *basic_info;
 	struct kstat stat;
 	u64 time;
 
@@ -4171,7 +4171,7 @@  static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
 		return -EACCES;
 	}
 
-	basic_info = (struct smb2_file_all_info *)rsp->Buffer;
+	basic_info = (struct smb2_file_basic_info *)rsp->Buffer;
 	generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
 			 &stat);
 	basic_info->CreationTime = cpu_to_le64(fp->create_time);
@@ -4184,9 +4184,8 @@  static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
 	basic_info->Attributes = fp->f_ci->m_fattr;
 	basic_info->Pad1 = 0;
 	rsp->OutputBufferLength =
-		cpu_to_le32(offsetof(struct smb2_file_all_info, AllocationSize));
-	inc_rfc1001_len(rsp_org, offsetof(struct smb2_file_all_info,
-					  AllocationSize));
+		cpu_to_le32(sizeof(struct smb2_file_basic_info));
+	inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_basic_info));
 	return 0;
 }
 
@@ -5412,7 +5411,7 @@  static int smb2_create_link(struct ksmbd_work *work,
 static int set_file_basic_info(struct ksmbd_file *fp, char *buf,
 			       struct ksmbd_share_config *share)
 {
-	struct smb2_file_all_info *file_info;
+	struct smb2_file_basic_info *file_info;
 	struct iattr attrs;
 	struct timespec64 ctime;
 	struct file *filp;
@@ -5423,7 +5422,7 @@  static int set_file_basic_info(struct ksmbd_file *fp, char *buf,
 	if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE))
 		return -EACCES;
 
-	file_info = (struct smb2_file_all_info *)buf;
+	file_info = (struct smb2_file_basic_info *)buf;
 	attrs.ia_valid = 0;
 	filp = fp->filp;
 	inode = file_inode(filp);
diff --git a/fs/ksmbd/smb2pdu.h b/fs/ksmbd/smb2pdu.h
index bcec845b03f3..261825d06391 100644
--- a/fs/ksmbd/smb2pdu.h
+++ b/fs/ksmbd/smb2pdu.h
@@ -1464,6 +1464,15 @@  struct smb2_file_all_info { /* data block encoding of response to level 18 */
 	char   FileName[1];
 } __packed; /* level 18 Query */
 
+struct smb2_file_basic_info { /* data block encoding of response to level 18 */
+	__le64 CreationTime;	/* Beginning of FILE_BASIC_INFO equivalent */
+	__le64 LastAccessTime;
+	__le64 LastWriteTime;
+	__le64 ChangeTime;
+	__le32 Attributes;
+	__u32  Pad1;		/* End of FILE_BASIC_INFO_INFO equivalent */
+} __packed;
+
 struct smb2_file_alt_name_info {
 	__le32 FileNameLength;
 	char FileName[0];