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This routine is part of the XTI interfaces which evolved from the TLI interfaces. XTI represents the future evolution of these interfaces. However, TLI interfaces are
supported for compatibility. When using a TLI routine that has the same name as an XTI routine, the tiuser.h header file must be used. Refer to the TLI COMPATIBILITY section for
a description of differences between the two interfaces.
The t_free() function frees memory previously allocated by t_alloc(3NSL). This function will free memory for the specified structure, and will also free memory
for buffers referenced by the structure.
The argument ptr points to one of the seven structure types described for t_alloc(3NSL), and struct_type identifies the type
of that structure which must be one of the following:
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T_BIND struct t_bind
T_CALL struct t_call
T_OPTMGMT struct t_optmgmt
T_DIS struct t_discon
T_UNITDATA struct t_unitdata
T_UDERROR struct t_uderr
T_INFO struct t_info
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where each of these structures is used as an argument to one or more transport functions.
The function t_free() will check the addr, opt and udata fields of the given structure, as appropriate, and free the buffers pointed to by the buf field of the netbuf structure. If buf is a null pointer, t_free() will not attempt to free memory. After all buffers are freed, t_free() will free the memory associated with the structure pointed to by ptr.
Undefined results will occur if ptr or any of the buf pointers points to a block of memory that was not previously allocated by t_alloc(3NSL).
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