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build.info
(142 B)
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dso_dl.c
(8.11 KB)
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dso_dlfcn.c
(13.4 KB)
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dso_err.c
(4.54 KB)
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dso_lib.c
(9.25 KB)
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dso_local.h
(4.05 KB)
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dso_openssl.c
(523 B)
Editing: dso_local.h
/* * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the OpenSSL license (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ #include <stdio.h> #include "internal/cryptlib.h" #include "internal/dso.h" #include "crypto/dso_conf.h" #include "internal/refcount.h" /**********************************************************************/ /* The low-level handle type used to refer to a loaded shared library */ struct dso_st { DSO_METHOD *meth; /* * Standard dlopen uses a (void *). Win32 uses a HANDLE. VMS doesn't use * anything but will need to cache the filename for use in the dso_bind * handler. All in all, let each method control its own destiny. * "Handles" and such go in a STACK. */ STACK_OF(void) *meth_data; CRYPTO_REF_COUNT references; int flags; /* * For use by applications etc ... use this for your bits'n'pieces, don't * touch meth_data! */ CRYPTO_EX_DATA ex_data; /* * If this callback function pointer is set to non-NULL, then it will be * used in DSO_load() in place of meth->dso_name_converter. NB: This * should normally set using DSO_set_name_converter(). */ DSO_NAME_CONVERTER_FUNC name_converter; /* * If this callback function pointer is set to non-NULL, then it will be * used in DSO_load() in place of meth->dso_merger. NB: This should * normally set using DSO_set_merger(). */ DSO_MERGER_FUNC merger; /* * This is populated with (a copy of) the platform-independent filename * used for this DSO. */ char *filename; /* * This is populated with (a copy of) the translated filename by which * the DSO was actually loaded. It is NULL iff the DSO is not currently * loaded. NB: This is here because the filename translation process may * involve a callback being invoked more than once not only to convert to * a platform-specific form, but also to try different filenames in the * process of trying to perform a load. As such, this variable can be * used to indicate (a) whether this DSO structure corresponds to a * loaded library or not, and (b) the filename with which it was actually * loaded. */ char *loaded_filename; CRYPTO_RWLOCK *lock; }; struct dso_meth_st { const char *name; /* * Loads a shared library, NB: new DSO_METHODs must ensure that a * successful load populates the loaded_filename field, and likewise a * successful unload OPENSSL_frees and NULLs it out. */ int (*dso_load) (DSO *dso); /* Unloads a shared library */ int (*dso_unload) (DSO *dso); /* * Binds a function - assumes a return type of DSO_FUNC_TYPE. This should * be cast to the real function prototype by the caller. Platforms that * don't have compatible representations for different prototypes (this * is possible within ANSI C) are highly unlikely to have shared * libraries at all, let alone a DSO_METHOD implemented for them. */ DSO_FUNC_TYPE (*dso_bind_func) (DSO *dso, const char *symname); /* * The generic (yuck) "ctrl()" function. NB: Negative return values * (rather than zero) indicate errors. */ long (*dso_ctrl) (DSO *dso, int cmd, long larg, void *parg); /* * The default DSO_METHOD-specific function for converting filenames to a * canonical native form. */ DSO_NAME_CONVERTER_FUNC dso_name_converter; /* * The default DSO_METHOD-specific function for converting filenames to a * canonical native form. */ DSO_MERGER_FUNC dso_merger; /* [De]Initialisation handlers. */ int (*init) (DSO *dso); int (*finish) (DSO *dso); /* Return pathname of the module containing location */ int (*pathbyaddr) (void *addr, char *path, int sz); /* Perform global symbol lookup, i.e. among *all* modules */ void *(*globallookup) (const char *symname); };
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