t_free - free a library structure
int t_free(ptr, struct_type)
t_free() frees memory previously allocated by t_alloc(3N). This func-
tion will free memory for the specified structure, and will also free
memory for buffers referenced by the structure.
ptr points to one of the six structure types described for t_alloc(3N),
and struct_type identifies the type of that structure which can be one
of the following:
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
where each of these structures is used as an argument to one or more
t_free() checks the addr, opt, and udata fields of the given structure
(as appropriate), and frees the buffers pointed to by the buf field of
the netbuf (see intro(3)) structure. The maxlen, len, and buf members
of the netbuf structure are described in t_accept(3N). If buf is NULL,
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
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(3N).
0 on success.
-1 on failure and sets t_errno to indicate the error.
TSYSERR The function failed due to a system error and set errno
to indicate the error.
21 January 1990 T_FREE(3N)