1 /* 2 * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2015, 2015 SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 // Encapsulates the libodm library and provides more convenient interfaces. 27 28 #ifndef OS_AIX_VM_LIBODM_AIX_HPP 29 #define OS_AIX_VM_LIBODM_AIX_HPP 30 31 #include <odmi.h> 32 33 34 // The purpose of this code is to dynamically load the libodm library 35 // instead of statically linking against it. The library is AIX-specific. 36 // It only exists on AIX, not on PASE. In order to share binaries 37 // between AIX and PASE, we can't directly link against it. 38 39 typedef int (*fun_odm_initialize )(void); 40 typedef char* (*fun_odm_set_path )(char*); 41 typedef CLASS_SYMBOL (*fun_odm_mount_class)(char*); 42 typedef void* (*fun_odm_get_obj )(CLASS_SYMBOL, char*, void*, int); 43 typedef int (*fun_odm_terminate )(void); 44 45 class dynamicOdm { 46 void *_libhandle; 47 protected: 48 fun_odm_initialize _odm_initialize; 49 fun_odm_set_path _odm_set_path; 50 fun_odm_mount_class _odm_mount_class; 51 fun_odm_get_obj _odm_get_obj; 52 fun_odm_terminate _odm_terminate; 53 public: 54 dynamicOdm(); 55 ~dynamicOdm(); odm_loaded()56 bool odm_loaded() {return _libhandle != NULL; } 57 }; 58 59 60 // We provide a more convenient interface for odm access and 61 // especially to determine the exact AIX kernel version. 62 63 class odmWrapper : private dynamicOdm { 64 CLASS_SYMBOL _odm_class; 65 char *_data; 66 bool _initialized; 67 void clean_data(); 68 69 public: 70 // Make sure everything gets initialized and cleaned up properly. odmWrapper(char * odm_class_name,char * odm_path=NULL)71 explicit odmWrapper(char* odm_class_name, char* odm_path = NULL) : _odm_class((CLASS_SYMBOL)-1), 72 _data(NULL), _initialized(false) { 73 if (!odm_loaded()) { return; } 74 _initialized = ((*_odm_initialize)() != -1); 75 if (_initialized) { 76 if (odm_path) { (*_odm_set_path)(odm_path); } 77 _odm_class = (*_odm_mount_class)(odm_class_name); 78 } 79 } ~odmWrapper()80 ~odmWrapper() { 81 if (_initialized) { (*_odm_terminate)(); clean_data(); } 82 } 83 odm_class()84 CLASS_SYMBOL odm_class() { return _odm_class; } has_class()85 bool has_class() { return odm_class() != (CLASS_SYMBOL)-1; } 86 int class_offset(char *field, bool is_aix_5); data()87 char* data() { return _data; } 88 retrieve_obj(char * name=NULL)89 char* retrieve_obj(char* name = NULL) { 90 clean_data(); 91 char *cnp = (char*)(void*)(*_odm_get_obj)(odm_class(), name, NULL, (name == NULL) ? ODM_NEXT : ODM_FIRST); 92 if (cnp != (char*)-1) { _data = cnp; } 93 return data(); 94 } 95 read_short(int offs)96 int read_short(int offs) { 97 short *addr = (short*)(data() + offs); 98 return *addr; 99 } 100 101 // Determine the exact AIX kernel version as 4 byte value. 102 // The high order 2 bytes must be initialized already. They can be determined by uname. 103 static void determine_os_kernel_version(uint32_t* p_ver); 104 }; 105 106 #endif // OS_AIX_VM_LIBODM_AIX_HPP 107