Configuration files

By default MariaDB Connector/C doesn't read any configuration file, this needs to be forced either by setting the option MYSQL_READ_DEFAULT_FILE or MYSQL_READ_DEFAULT_GROUP:

/* process options from a configuration file which is not in standard place */
rc= mysql_options(mysql, MYSQL_READ_DEFAULT_FILE, "/home/jeff/config/my_config.cnf");

/* Only process options from group my_app */
rc= mysql_options(mysql, MYSQL_READ_DEFAULT_GROUP, "my_app"`);

Default location of configuration files

If a group (or an empty group) was specified, MariaDB Connector/C looks for configuration files in the following locations:

Windows

1. System windows directory
2. System directory
3. Windows directory
4. C:\
5. MARIADB_HOME environment variable

Posix/Linux

1. SYSCONFDIR (if Connector/C was build with server package)
2. /etc/
3. /etc/mysql
4. MARIADB_HOME environment variable
5. .my.cnf in home directory of the current user

Default groups

In addition to the specified group MariaDB Connector/C will process options from the following groups:

1. [client]
2. [client-server]
3. [client-mariadb]
4. [group] (if specified via mysql_options)

Configuration options

Option	Type	Description
bind-address	string	Bind to a specific address
character-sets-dir	string	not in use
compress	boolean(0/1)	Use compressed protocol
connection	string	A connection string as described in mariadb_connect() function.
connect-timeout	numeric	Connection timeout
database	string	Default database (schema)
debug	string	not in use
default-auth	string	Default authentication method
default-character-set	string	default character set
disable-local-infile	none	Disable use of LOAD .. LOCAL command
host	string	Server name or IP address
init-command	string	one or more commands which will be sent directly after a connection was established
interactive-timeout	none	Enables interactive timeout
local-infile	boolean(0/1)	Enable use of LOAD .. LOCAL command
max-allowed-packet	numeric	max. allowed packet size
multi-queries	bool	Allow execution of multiple semicolon separated statements
multi-results	bool	Allow processing multiple results
multi-statements	string	Alias for mult-queries
net-buffer-length	numeric	Length of net buffer
password	string	Password (not recommended to set the password in a configuration file)
pipe	boolean(0/1)	Use named pipe (Windows only)
plugin-dir	string	client plugin directory
port	numeric	Port number of server
protocol	numeric	Protocol
reconnect	boolean(0/1)	Force automatic reconnect
restricted-auth	string	Restricted authentication plugins
report-data-truncation	boolean(0/1)	Report data truncation in binary protocol
return-found-rows	none	Return found rows
secure-auth	boolean(0/1)	Use secure authentication
server-public-key	string	Not in use
shared-memory-base-name	string	shared memory base name (Windows only)
socket, unix_socket	string	Unix socket
ssl-capath	string	Directory which contains trusted SSL Certificate Authority certificate files
ssl-ca	string	Trusted SSL Certificate Authority file
ssl-cert	string	X509 client certificate
ssl-cipher	string	Force use of specified cipher suite(s)
ssl-crlpath	string	Directory which contains certificate revocation-list files
ssl-crl	string	certificate revocation-list file
ssl-enforce	boolean(0/1)	Use TLS/SSL connection
ssl-fp-list	string	File that contains one or more finger prints of server certificates
ssl-fp	string	Finger print of server certificate
ssl-key	string	X509 key
ssl-passphrase	string	Passphrase for passphrase protected X509 keys
ssl-verify-server-cert	boolean(0/1)	Verify server X509 certificate
timeout	numeric	Read/Write timeout in seconds
tls-version	string	Force use of TLS version.
user	string	Name of the user