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BIO_new(3) OpenSSL BIO_new(3)
BIO_new, BIO_set, BIO_free, BIO_vfree, BIO_free_all - BIO
allocation and freeing functions
BIO * BIO_new(BIO_METHOD *type);
int BIO_set(BIO *a,BIO_METHOD *type);
int BIO_free(BIO *a);
void BIO_vfree(BIO *a);
void BIO_free_all(BIO *a);
The BIO_new() function returns a new BIO using method
BIO_set() sets the method of an already existing BIO.
BIO_free() frees up a single BIO, BIO_vfree() also frees
up a single BIO but it does not return a value. Calling
BIO_free() may also have some effect on the underlying I/O
structure, for example it may close the file being
referred to under certain circumstances. For more details
see the individual BIO_METHOD descriptions.
BIO_free_all() frees up an entire BIO chain, it does not
halt if an error occurs freeing up an individual BIO in
BIO_new() returns a newly created BIO or NULL if the call
BIO_set(), BIO_free() return 1 for success and 0 for fail-
BIO_free_all() and BIO_vfree() do not return values.
Some BIOs (such as memory BIOs) can be used immediately
after calling BIO_new(). Others (such as file BIOs) need
some additional initialization, and frequently a utility
function exists to create and initialize such BIOs.
If BIO_free() is called on a BIO chain it will only free
one BIO resulting in a memory leak.
Calling BIO_free_all() a single BIO has the same effect as
calling BIO_free() on it other than the discarded return
Normally the type argument is supplied by a function which
returns a pointer to a BIO_METHOD. There is a naming con-
vention for such functions: a source/sink BIO is normally
called BIO_s_*() and a filter BIO BIO_f_*();
Create a memory BIO:
BIO *mem = BIO_new(BIO_s_mem());
0.9.7c 2000-09-16 BIO_new(3)
Time taken: 0.35655 seconds
Created with the man page lookup class by Andrew Collington,