Function acSystemGetInterfaceSubnetMaskStr 

pub unsafe extern "C" fn acSystemGetInterfaceSubnetMaskStr(
    hSystem: acSystem,
    index: usize,
    pSubnetMaskStr: *mut c_char,
    pBufLen: *mut usize,
) -> AC_ERROR

@fn AC_ERROR AC_API acSystemGetInterfaceSubnetMaskStr(acSystem hSystem, size_t index, char* pSubnetMaskStr, size_t* pBufLen)

@param hSystem

• Type: acSystem
• [In] parameter
• The system object

@param index

• Type: size_t
• [In] parameter
• Index of the interface

@param pSubnetMaskStr

• Type: char*
• [Out] parameter
• Accepts null
• Subnet mask as a dot-separated string

@param pBufLen

• Type: size_t*
• [In/out] parameter
• (In) Length of the buffer
• (Out) Length of the value

@return

• Type: AC_ERROR
• Error code for the function
• Returns AC_ERR_SUCCESS (0) on success

acSystemGetInterfaceSubnetMaskStr gets the subnet mask of an interface on the network, returning it as a string.