X-Git-Url: https://git.openssl.org/?a=blobdiff_plain;f=crypto%2Fdso%2Fdso.h;h=c9d736654ac54de3e712c8664d3febd55bba08f1;hb=83e68987b309c4d97888317473f5e18566282b6f;hp=a1678454a5ad6f6d0bacb498e367f53a83d05c26;hpb=9163b8fb238ece12091753c137db37b6489719bb;p=openssl.git diff --git a/crypto/dso/dso.h b/crypto/dso/dso.h index a1678454a5..c9d736654a 100644 --- a/crypto/dso/dso.h +++ b/crypto/dso/dso.h @@ -1,4 +1,4 @@ -/* dso.h */ +/* dso.h -*- mode:C; c-file-style: "eay" -*- */ /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL * project 2000. */ @@ -95,6 +95,13 @@ extern "C" { */ #define DSO_FLAG_UPCASE_SYMBOL 0x10 +/* This flag loads the library with public symbols. + * Meaning: The exported symbols of this library are public + * to all libraries loaded after this library. + * At the moment only implemented in unix. + */ +#define DSO_FLAG_GLOBAL_SYMBOLS 0x20 + typedef void (*DSO_FUNC_TYPE)(void); @@ -107,6 +114,22 @@ typedef struct dso_st DSO; * condition) or a newly allocated string containing the transformed form that * the caller will need to free with OPENSSL_free() when done. */ typedef char* (*DSO_NAME_CONVERTER_FUNC)(DSO *, const char *); +/* The function prototype used for method functions (or caller-provided + * callbacks) that merge two file specifications. They are passed a + * DSO structure pointer (or NULL if they are to be used independantly of + * a DSO object) and two file specifications to merge. They should + * either return NULL (if there is an error condition) or a newly allocated + * string containing the result of merging that the caller will need + * to free with OPENSSL_free() when done. + * Here, merging means that bits and pieces are taken from each of the + * file specifications and added together in whatever fashion that is + * sensible for the DSO method in question. The only rule that really + * applies is that if the two specification contain pieces of the same + * type, the copy from the string string takes priority. One could see + * it as the first specification is the one given by the user and the + * second being a bunch of defaults to add on if they're missing in the + * first. */ +typedef char* (*DSO_MERGER_FUNC)(DSO *, const char *, const char *); typedef struct dso_meth_st { @@ -140,10 +163,16 @@ typedef struct dso_meth_st /* 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); } DSO_METHOD; /**********************************************************************/ @@ -164,9 +193,13 @@ struct dso_st * 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 on DSO_load() in place of meth->dso_name_converter. NB: This + * 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-independant * filename used for this DSO. */ char *filename; @@ -209,6 +242,11 @@ int DSO_set_filename(DSO *dso, const char *filename); * caller-created DSO_METHODs can do the same thing. A non-NULL return value * will need to be OPENSSL_free()'d. */ char *DSO_convert_filename(DSO *dso, const char *filename); +/* This function will invoke the DSO's merger callback to merge two file + * specifications, or if the callback isn't set it will instead use the + * DSO_METHOD's merger. A non-NULL return value will need to be + * OPENSSL_free()'d. */ +char *DSO_merge(DSO *dso, const char *filespec1, const char *filespec2); /* If the DSO is currently loaded, this returns the filename that it was loaded * under, otherwise it returns NULL. So it is also useful as a test as to * whether the DSO is currently loaded. NB: This will not necessarily return @@ -261,7 +299,16 @@ DSO_METHOD *DSO_METHOD_win32(void); /* If VMS is defined, use shared images. If not, return NULL. */ DSO_METHOD *DSO_METHOD_vms(void); -void ERR_load_DSO_strings(void); +/* This function writes null-terminated pathname of DSO module + * containing 'addr' into 'sz' large caller-provided 'path' and + * returns the number of characters [including trailing zero] + * written to it. If 'sz' is 0 or negative, 'path' is ignored and + * required amount of charachers [including trailing zero] to + * accomodate pathname is returned. If 'addr' is NULL, then + * pathname of cryptolib itself is returned. Negative or zero + * return value denotes error. + */ +int DSO_pathbyaddr(void *addr,char *path,int sz); /* BEGIN ERROR CODES */ /* The following lines are auto generated by the script mkerr.pl. Any changes @@ -275,11 +322,13 @@ void ERR_load_DSO_strings(void); #define DSO_F_DLFCN_BIND_FUNC 100 #define DSO_F_DLFCN_BIND_VAR 101 #define DSO_F_DLFCN_LOAD 102 +#define DSO_F_DLFCN_MERGER 130 #define DSO_F_DLFCN_NAME_CONVERTER 123 #define DSO_F_DLFCN_UNLOAD 103 #define DSO_F_DL_BIND_FUNC 104 #define DSO_F_DL_BIND_VAR 105 #define DSO_F_DL_LOAD 106 +#define DSO_F_DL_MERGER 131 #define DSO_F_DL_NAME_CONVERTER 124 #define DSO_F_DL_UNLOAD 107 #define DSO_F_DSO_BIND_FUNC 108 @@ -290,27 +339,37 @@ void ERR_load_DSO_strings(void); #define DSO_F_DSO_GET_FILENAME 127 #define DSO_F_DSO_GET_LOADED_FILENAME 128 #define DSO_F_DSO_LOAD 112 +#define DSO_F_DSO_MERGE 132 #define DSO_F_DSO_NEW_METHOD 113 #define DSO_F_DSO_SET_FILENAME 129 #define DSO_F_DSO_SET_NAME_CONVERTER 122 #define DSO_F_DSO_UP_REF 114 -#define DSO_F_VMS_BIND_VAR 115 +#define DSO_F_VMS_BIND_SYM 115 #define DSO_F_VMS_LOAD 116 +#define DSO_F_VMS_MERGER 133 #define DSO_F_VMS_UNLOAD 117 #define DSO_F_WIN32_BIND_FUNC 118 #define DSO_F_WIN32_BIND_VAR 119 +#define DSO_F_WIN32_JOINER 135 #define DSO_F_WIN32_LOAD 120 +#define DSO_F_WIN32_MERGER 134 #define DSO_F_WIN32_NAME_CONVERTER 125 +#define DSO_F_WIN32_SPLITTER 136 #define DSO_F_WIN32_UNLOAD 121 +#define DSO_F_PATHBYADDR 137 /* Reason codes. */ #define DSO_R_CTRL_FAILED 100 #define DSO_R_DSO_ALREADY_LOADED 110 +#define DSO_R_EMPTY_FILE_STRUCTURE 113 +#define DSO_R_FAILURE 114 #define DSO_R_FILENAME_TOO_BIG 101 #define DSO_R_FINISH_FAILED 102 +#define DSO_R_INCORRECT_FILE_SYNTAX 115 #define DSO_R_LOAD_FAILED 103 #define DSO_R_NAME_TRANSLATION_FAILED 109 #define DSO_R_NO_FILENAME 111 +#define DSO_R_NO_FILE_SPECIFICATION 116 #define DSO_R_NULL_HANDLE 104 #define DSO_R_SET_FILENAME_FAILED 112 #define DSO_R_STACK_ERROR 105