disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/fs/cifs/link.c
..
..
@@ -97,15 +97,18 @@
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 	if (rc != 1)
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 		return -EINVAL;
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+	if (link_len > CIFS_MF_SYMLINK_LINK_MAXLEN)
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+		return -EINVAL;
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+
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 	rc = symlink_hash(link_len, link_str, md5_hash);
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 	if (rc) {
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 		cifs_dbg(FYI, "%s: MD5 hash failure: %d\n", __func__, rc);
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 		return rc;
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 	}
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-	snprintf(md5_str2, sizeof(md5_str2),
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-		 CIFS_MF_SYMLINK_MD5_FORMAT,
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-		 CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
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+	scnprintf(md5_str2, sizeof(md5_str2),
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+		  CIFS_MF_SYMLINK_MD5_FORMAT,
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+		  CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
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112
 
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 	if (strncmp(md5_str1, md5_str2, 17) != 0)
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 		return -EINVAL;
..
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@@ -142,10 +145,10 @@
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 		return rc;
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 	}
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-	snprintf(buf, buf_len,
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-		 CIFS_MF_SYMLINK_LEN_FORMAT CIFS_MF_SYMLINK_MD5_FORMAT,
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-		 link_len,
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-		 CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
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+	scnprintf(buf, buf_len,
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+		  CIFS_MF_SYMLINK_LEN_FORMAT CIFS_MF_SYMLINK_MD5_FORMAT,
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+		  link_len,
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+		  CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
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152
 
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 	ofs = CIFS_MF_SYMLINK_LINK_OFFSET;
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 	memcpy(buf + ofs, link_str, link_len);
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@@ -308,14 +311,14 @@
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 	int oplock = 0;
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 	struct cifs_fid fid;
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 	struct cifs_open_parms oparms;
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-	struct cifs_io_parms io_parms;
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+	struct cifs_io_parms io_parms = {0};
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 	int buf_type = CIFS_NO_BUFFER;
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 	FILE_ALL_INFO file_info;
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 	oparms.tcon = tcon;
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 	oparms.cifs_sb = cifs_sb;
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 	oparms.desired_access = GENERIC_READ;
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-	oparms.create_options = CREATE_NOT_DIR;
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+	oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
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 	oparms.disposition = FILE_OPEN;
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 	oparms.path = path;
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 	oparms.fid = &fid;
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@@ -352,16 +355,12 @@
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 	int oplock = 0;
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 	struct cifs_fid fid;
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 	struct cifs_open_parms oparms;
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-	struct cifs_io_parms io_parms;
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-	int create_options = CREATE_NOT_DIR;
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-
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-	if (backup_cred(cifs_sb))
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-		create_options |= CREATE_OPEN_BACKUP_INTENT;
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+	struct cifs_io_parms io_parms = {0};
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359
 
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 	oparms.tcon = tcon;
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 	oparms.cifs_sb = cifs_sb;
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 	oparms.desired_access = GENERIC_WRITE;
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-	oparms.create_options = create_options;
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+	oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
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 	oparms.disposition = FILE_CREATE;
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 	oparms.path = path;
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 	oparms.fid = &fid;
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@@ -393,7 +392,7 @@
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 	int rc;
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 	struct cifs_fid fid;
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 	struct cifs_open_parms oparms;
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-	struct cifs_io_parms io_parms;
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+	struct cifs_io_parms io_parms = {0};
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 	int buf_type = CIFS_NO_BUFFER;
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 	__le16 *utf16_path;
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 	__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
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@@ -402,9 +401,7 @@
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 	oparms.tcon = tcon;
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 	oparms.cifs_sb = cifs_sb;
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 	oparms.desired_access = GENERIC_READ;
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-	oparms.create_options = CREATE_NOT_DIR;
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-	if (backup_cred(cifs_sb))
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-		oparms.create_options |= CREATE_OPEN_BACKUP_INTENT;
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+	oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
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 	oparms.disposition = FILE_OPEN;
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 	oparms.fid = &fid;
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 	oparms.reconnect = false;
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@@ -422,7 +419,7 @@
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 	}
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420
 
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 	rc = SMB2_open(xid, &oparms, utf16_path, &oplock, pfile_info, NULL,
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-		       NULL);
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+		       NULL, NULL);
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 	if (rc)
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 		goto qmf_out_open_fail;
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425
 
..
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@@ -456,14 +453,10 @@
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 	int rc;
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 	struct cifs_fid fid;
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 	struct cifs_open_parms oparms;
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-	struct cifs_io_parms io_parms;
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-	int create_options = CREATE_NOT_DIR;
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+	struct cifs_io_parms io_parms = {0};
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 	__le16 *utf16_path;
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 	__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
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 	struct kvec iov[2];
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-
465
-	if (backup_cred(cifs_sb))
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-		create_options |= CREATE_OPEN_BACKUP_INTENT;
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460
 
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 	cifs_dbg(FYI, "%s: path: %s\n", __func__, path);
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462
 
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@@ -474,13 +467,14 @@
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 	oparms.tcon = tcon;
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 	oparms.cifs_sb = cifs_sb;
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 	oparms.desired_access = GENERIC_WRITE;
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-	oparms.create_options = create_options;
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+	oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
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 	oparms.disposition = FILE_CREATE;
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 	oparms.fid = &fid;
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 	oparms.reconnect = false;
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+	oparms.mode = 0644;
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475
 
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 	rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
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-		       NULL);
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+		       NULL, NULL);
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 	if (rc) {
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 		kfree(utf16_path);
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 		return rc;
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@@ -648,9 +642,16 @@
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 		rc = query_mf_symlink(xid, tcon, cifs_sb, full_path,
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 				      &target_path);
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644
 
651
-	if (rc != 0 && server->ops->query_symlink)
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-		rc = server->ops->query_symlink(xid, tcon, full_path,
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-						&target_path, cifs_sb);
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+	if (rc != 0 && server->ops->query_symlink) {
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+		struct cifsInodeInfo *cifsi = CIFS_I(inode);
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+		bool reparse_point = false;
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+
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+		if (cifsi->cifsAttrs & ATTR_REPARSE)
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+			reparse_point = true;
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+
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+		rc = server->ops->query_symlink(xid, tcon, cifs_sb, full_path,
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+						&target_path, reparse_point);
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+	}
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655
 
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 	kfree(full_path);
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 	free_xid(xid);
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@@ -704,7 +705,9 @@
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 					cifs_sb_target->local_nls); */
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 	if (rc == 0) {
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-		if (pTcon->unix_ext)
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+		if (pTcon->posix_extensions)
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+			rc = smb311_posix_get_inode_info(&newinode, full_path, inode->i_sb, xid);
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+		else if (pTcon->unix_ext)
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 			rc = cifs_get_inode_info_unix(&newinode, full_path,
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 						      inode->i_sb, xid);
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 		else