Source Files

A C source file (a .c file) for a device driver has the following responsibilities:

• Contains the data declarations and the code for the entry points of the driver

• Contains the #include statements that are needed by the driver

• Declares extern references

• Declares local data

• Sets up the cb_ops and dev_ops structures

• Declares and initializes the module configuration section, that is, the modlinkage(9S) and modldrv(9S) structures

• Makes any other necessary declarations

• Defines the driver entry points