CRYPTO_SET_MEM_FUNCTIONS(3)                           Library Functions Manual

NAME
     CRYPTO_set_mem_functions, CRYPTO_mem_ctrl, CRYPTO_mem_leaks,
     CRYPTO_mem_leaks_fp, CRYPTO_mem_leaks_cb - legacy OpenSSL memory
     allocation control

SYNOPSIS
     #include <openssl/crypto.h>

     int
     CRYPTO_set_mem_functions(void *(*m)(size_t, const char *, int),
         void *(*r)(void *, size_t, const char *, int),
         void (*f)(void *, const char *, int));

     int
     CRYPTO_mem_ctrl(int mode);

     int
     CRYPTO_mem_leaks(BIO *b);

     int
     CRYPTO_mem_leaks_fp(FILE *fp);

     typedef int *
     CRYPTO_MEM_LEAK_CB(unsigned long, const char *, int, int, void *);

     int
     CRYPTO_mem_leaks_cb(CRYPTO_MEM_LEAK_CB *cb);

DESCRIPTION
     Do not use any of the interfaces documented here.  They are provided
     purely for compatibility with legacy application code.

     CRYPTO_set_mem_functions(), CRYPTO_mem_ctrl(), CRYPTO_mem_leaks(),
     CRYPTO_mem_leaks_fp(), and CRYPTO_mem_leaks_cb() have no effect.

RETURN VALUES
     CRYPTO_set_mem_functions() always returns 0.

     CRYPTO_mem_ctrl() always returns CRYPTO_MEM_CHECK_OFF.

     CRYPTO_mem_leaks(), CRYPTO_mem_leaks_fp(), and CRYPTO_mem_leaks_cb()
     always return -1.

SEE ALSO
     crypto(3)

HISTORY
     CRYPTO_mem_ctrl(), CRYPTO_mem_leaks(), and CRYPTO_mem_leaks_fp() first
     appeared in SSLeay 0.6.4.  CRYPTO_set_mem_functions() first appeared in
     SSLeay 0.6.5.  CRYPTO_mem_leaks_cb() first appeared in SSLeay 0.6.6.  All
     these functions have all been available since OpenBSD 2.4.

Linux 6.13.7-arch1-1             March 8, 2025            Linux 6.13.7-arch1-1