.\"t
.\" Automatically generated by Pandoc 2.5
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.TH "mariadb_get_infov" "3" "" "Version 3.3.1" "MariaDB Connector/C"
.hy
.SS Name
.PP
mariadb_get_infov \- retrieves generic or connection related
information
.SS Synopsis
.IP
.nf
\f[C]
#include <mysql.h>

int mariadb_get_infov(MYSQL * mysql,
                      enum mariadb_value value,
                      void * arg,
                      ...);
\f[R]
.fi
.SH Description
.PP
Retrieves generic or connection specific information.
\f[C]arg\f[R] (and further arguments) must be a pointer to a variable of
the type appropriate for the \f[C]value\f[R] argument.
The following table shows which variable type to use for each value.
.PP
.TS
tab(@);
lw(35.0n) lw(35.0n).
T{
Variable Type
T}@T{
Values
T}
_
T{
\f[C]unsigned int\f[R]
T}@T{
\f[C]MARIADB_CLIENT_VERSION_ID\f[R],
\f[C]MARIADB_CONNECTION_ASYNC_TIMEOUT\f[R],
\f[C]MARIADB_CONNECTION_ASYNC_TIMEOUT_MS\f[R],
\f[C]MARIADB_CONNECTION_ERROR_ID\f[R],
\f[C]MARIADB_CONNECTION_PORT\f[R],
\f[C]MARIADB_CONNECTION_PROTOCOL_VERSION_ID\f[R],
\f[C]MARIADB_CONNECTION_PVIO_TYPE\f[R],
\f[C]MARIADB_CONNECTION_SERVER_STATUS\f[R],
\f[C]MARIADB_CONNECTION_SERVER_VERSION_ID\f[R],
\f[C]MARIADB_CONNECTION_TLS_VERSION_ID\f[R]
T}
T{
\f[C]unsigned long\f[R]
T}@T{
\f[C]MARIADB_CONNECTION_CLIENT_CAPABILITIES\f[R],
\f[C]MARIADB_CONNECTION_EXTENDED_SERVER_CAPABILITIES\f[R],
\f[C]MARIADB_CONNECTION_SERVER_CAPABILITIES\f[R]
T}
T{
\f[C]size_t\f[R]
T}@T{
\f[C]MARIADB_MAX_ALLOWED_PACKET\f[R],
\f[C]MARIADB_NET_BUFFER_LENGTH\f[R]
T}
T{
\f[C]const char *\f[R]
T}@T{
\f[C]MARIADB_CLIENT_VERSION\f[R], \f[C]MARIADB_TLS_VERSION\f[R],
\f[C]MARIADB_CONNECTION_ERROR\f[R], \f[C]MARIADB_CONNECTION_HOST\f[R],
\f[C]MARIADB_CONNECTION_INFO\f[R], \f[C]MARIADB_CONNECTION_SCHEMA\f[R],
\f[C]MARIADB_CONNECTION_SERVER_TYPE\f[R],
\f[C]MARIADB_CONNECTION_SERVER_VERSION\f[R],
\f[C]MARIADB_CONNECTION_SQLSTATE\f[R],
\f[C]MARIADB_CONNECTION_SSL_CIPHER\f[R],
\f[C]MARIADB_CONNECTION_TLS_VERSION\f[R],
\f[C]MARIADB_CONNECTUION_UNIX_SOCKET\f[R],
\f[C]MARIADB_CONNECTION_USER\f[R],
T}
T{
\f[C]const char **\f[R]
T}@T{
\f[C]MARIADB_CLIENT_ERRORS\f[R]
T}
T{
\f[C]const *MY_CHARSET_INFO\f[R]
T}@T{
\f[C]MARIADB_CHARSET_NAME\f[R],
\f[C]MARIADB_CONNECTION_CHARSET_INFO\f[R]
T}
T{
\f[C]my_socket\f[R]
T}@T{
\f[C]MARIADB_CONNECTION_SOCKET\f[R]
T}
.TE
.SS Value types
.SS Generic information
.PP
For these information types parameter \f[C]mysql\f[R] needs to be set to
NULL.
.IP \[bu] 2
\f[C]MARIADB_CHARSET_NAME\f[R]
.PD 0
.P
.PD
Retrieves the charset information for a character set by it\[cq]s
literal representation.
.IP \[bu] 2
\f[C]MARIADB_CLIENT_ERRORS\f[R]
.PD 0
.P
.PD
Retrieve array of client errors.
This can be used in plugins to set global error messages (which are not
exported by MariaDB Connector/C).
.IP \[bu] 2
\f[C]MARIADB_CLIENT_VERSION\f[R]
.PD 0
.P
.PD
The client version in literal representation.
.IP \[bu] 2
\f[C]MARIADB_CLIENT_VERSION_ID\f[R]
.PD 0
.P
.PD
The client version in numeric format.
.IP \[bu] 2
\f[C]MARIADB_MAX_ALLOWED_PACKET\f[R]
.PD 0
.P
.PD
Retrieves value of maximum allowed packet size.
.IP \[bu] 2
\f[C]MARIADB_NET_BUFFER_LENGTH\f[R]
.PD 0
.P
.PD
Retrieves the length of net buffer.
.IP \[bu] 2
\f[C]MARIADB_SSL_LIBRARY\f[R]
.PD 0
.P
.PD
The TLS library MariaDB Connector/C is compiled against.
.SS Connection related information
.PP
For these information types parameter mysql must be represent a valid
connection handle which was allocated by \f[B]mysql_init(3)\f[R].
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_ASYNC_TIMEOUT\f[R]
.PD 0
.P
.PD
Retrieves the timeout for non blocking calls in seconds.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_ASYNC_TIMEOUT_MS\f[R]
.PD 0
.P
.PD
Retrieves the timeout for non blocking calls in milliseconds.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_CHARSET_INFO\f[R]
.PD 0
.P
.PD
Retrieves character set information for given connection.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_CLIENT_CAPABILITIES\f[R]
.PD 0
.P
.PD
Returns the handshake capability flags] of the client.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_ERROR\f[R]
.PD 0
.P
.PD
Retrieves error message for last used command.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_ERROR_ID\f[R]
.PD 0
.P
.PD
Retrieves error number for last used command.
*\f[C]MARIADB_CONNECTION_EXTENDED_SERVER_CAPABILITIES\f[R]
.PD 0
.P
.PD
Returns the extended capability flags of the connected MariaDB server
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_HOST\f[R]
.PD 0
.P
.PD
Returns host name of the connected MariaDB server
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_INFO\f[R]
.PD 0
.P
.PD
Retrieves generic info for last used command.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_PORT\f[R]
.PD 0
.P
.PD
Retrieves the port number of server host.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_PROTOCOL_VERSION_ID\f[R]
.PD 0
.P
.PD
Retrieves the protocol version number.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_PVIO_TYPE\f[R]
.PD 0
.P
.PD
Retrieves the pvio plugin used for specified connection.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_SCHEMA\f[R]
.PD 0
.P
.PD
Retrieves the current schema.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_SERVER_CAPABILITIES\f[R]
.PD 0
.P
.PD
Retrievrs the capability flags of the connected server.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_SERVER_STATUS\f[R]
.PD 0
.P
.PD
Returns server status after last operation.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_SERVER_TYPE\f[R]
.PD 0
.P
.PD
Retrieves the type of the server.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_SERVER_VERSION\f[R]
.PD 0
.P
.PD
Retrieves the server version in literal format.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_SERVER_VERSION_ID\f[R]
.PD 0
.P
.PD
Retrieves the server version in numeric format.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_SOCKET\f[R]
.PD 0
.P
.PD
Retrieves the handle (socket) for given connection.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_SQLSTATE\f[R]
.PD 0
.P
.PD
Retrieves current sqlstate information for last used command.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_SSL_CIPHER\f[R]
.PD 0
.P
.PD
Retrieves the TLS/SSL cipher in use.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_TLS_VERSION\f[R]
.PD 0
.P
.PD
Retrieves the TLS protocol version used in literal format.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_TLS_VERSION_ID\f[R]
.PD 0
.P
.PD
Retrieves the TLS protocol version used in numeric format.
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_UNIX_SOCKET\f[R]
.PD 0
.P
.PD
Retrieves the file name of the unix socket
.IP \[bu] 2
\f[C]MARIADB_CONNECTION_USER\f[R]
.PD 0
.P
.PD
Retrieves connection\[cq]s user name.
.SS Returns
.PP
Returns zero on success, non zero if an error occurred (e.g.\ if an
invalid option was specified),
.SS Source file
.IP
.nf
\f[C]

## History
This function was added in MariaDB Connector/C 3.0,

## Examples
\f[R]
.fi
.PP
/* get server port for current connection \f[I]/ unsigned int port;
mariadb_get_infov(mysql, MARIADB_CONNECTION_PORT, (void \f[R])&port);
.IP
.nf
\f[C]
\f[R]
.fi
.PP
/* get user name for current connection \f[I]/ const char \f[R]user;
mariadb_get_infov(mysql, MARIADB_CONNECTION_USER, (void \f[I])&user);
\[ga]\[ga]\[ga] ## See also \f[R] \f[B]mysql_get_optionv(3)\f[R]