1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at http://curl.haxx.se/docs/copyright.html.
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
23 #ifdef NETWARE /* Novell NetWare */
27 #ifdef __NOVELL_LIBC__
28 /* For native LibC-based NLM we need to register as a real lib. */
34 #include <nks/thread.h>
35 #include <nks/synch.h>
50 NXKey_t perthreadkey; /* if -1, no key obtained... */
55 void *gLibHandle = (void *) NULL;
56 rtag_t gAllocTag = (rtag_t) NULL;
57 NXMutex_t *gLibLock = (NXMutex_t *) NULL;
59 /* internal library function prototypes... */
60 int DisposeLibraryData ( void * );
61 void DisposeThreadData ( void * );
62 int GetOrSetUpData ( int id, libdata_t **data, libthreaddata_t **threaddata );
65 int _NonAppStart( void *NLMHandle,
68 const char *loadDirPath,
69 size_t uninitializedDataLength,
71 int (*readRoutineP)( int conn,
72 void *fileHandle, size_t offset,
76 size_t customDataOffset,
77 size_t customDataSize,
79 const char **messages )
81 NX_LOCK_INFO_ALLOC(liblock, "Per-Application Data Lock", 0);
84 #pragma unused(cmdLine)
85 #pragma unused(loadDirPath)
86 #pragma unused(uninitializedDataLength)
87 #pragma unused(NLMFileHandle)
88 #pragma unused(readRoutineP)
89 #pragma unused(customDataOffset)
90 #pragma unused(customDataSize)
91 #pragma unused(messageCount)
92 #pragma unused(messages)
96 ** Here we process our command line, post errors (to the error screen),
97 ** perform initializations and anything else we need to do before being able
98 ** to accept calls into us. If we succeed, we return non-zero and the NetWare
99 ** Loader will leave us up, otherwise we fail to load and get dumped.
101 gAllocTag = AllocateResourceTag(NLMHandle,
102 "<library-name> memory allocations",
106 OutputToScreen(errorScreen, "Unable to allocate resource tag for "
107 "library memory allocations.\n");
111 gLibId = register_library(DisposeLibraryData);
114 OutputToScreen(errorScreen, "Unable to register library with kernel.\n");
118 gLibHandle = NLMHandle;
120 gLibLock = NXMutexAlloc(0, 0, &liblock);
123 OutputToScreen(errorScreen, "Unable to allocate library data lock.\n");
131 ** Here we clean up any resources we allocated. Resource tags is a big part
132 ** of what we created, but NetWare doesn't ask us to free those.
134 void _NonAppStop( void )
136 (void) unregister_library(gLibId);
137 NXMutexFree(gLibLock);
141 ** This function cannot be the first in the file for if the file is linked
142 ** first, then the check-unload function's offset will be nlmname.nlm+0
143 ** which is how to tell that there isn't one. When the check function is
144 ** first in the linked objects, it is ambiguous. For this reason, we will
145 ** put it inside this file after the stop function.
147 ** Here we check to see if it's alright to ourselves to be unloaded. If not,
148 ** we return a non-zero value. Right now, there isn't any reason not to allow
151 int _NonAppCheckUnload( void )
156 int GetOrSetUpData(int id, libdata_t **appData,
157 libthreaddata_t **threadData )
161 libthreaddata_t *thread_data;
163 NX_LOCK_INFO_ALLOC(liblock, "Application Data Lock", 0);
166 thread_data = (libthreaddata_t *) NULL;
169 ** Attempt to get our data for the application calling us. This is where we
170 ** store whatever application-specific information we need to carry in support
171 ** of calling applications.
173 app_data = (libdata_t *) get_app_data(id);
177 ** This application hasn't called us before; set up application AND per-thread
178 ** data. Of course, just in case a thread from this same application is calling
179 ** us simultaneously, we better lock our application data-creation mutex. We
180 ** also need to recheck for data after we acquire the lock because WE might be
181 ** that other thread that was too late to create the data and the first thread
182 ** in will have created it.
186 if(!(app_data = (libdata_t *) get_app_data(id))) {
187 app_data = malloc(sizeof(libdata_t));
190 memset(app_data, 0, sizeof(libdata_t));
192 app_data->tenbytes = malloc(10);
193 app_data->lock = NXMutexAlloc(0, 0, &liblock);
195 if(!app_data->tenbytes || !app_data->lock) {
197 NXMutexFree(app_data->lock);
200 app_data = (libdata_t *) NULL;
206 ** Here we burn in the application data that we were trying to get by calling
207 ** get_app_data(). Next time we call the first function, we'll get this data
208 ** we're just now setting. We also go on here to establish the per-thread data
209 ** for the calling thread, something we'll have to do on each application
210 ** thread the first time it calls us.
212 err = set_app_data(gLibId, app_data);
216 app_data = (libdata_t *) NULL;
220 /* create key for thread-specific data... */
221 err = NXKeyCreate(DisposeThreadData, (void *) NULL, &key);
223 if(err) /* (no more keys left?) */
226 app_data->perthreadkey = key;
236 key = app_data->perthreadkey;
238 if(key != -1 /* couldn't create a key? no thread data */
239 && !(err = NXKeyGetValue(key, (void **) &thread_data))
242 ** Allocate the per-thread data for the calling thread. Regardless of whether
243 ** there was already application data or not, this may be the first call by a
244 ** a new thread. The fact that we allocation 20 bytes on a pointer is not very
245 ** important, this just helps to demonstrate that we can have arbitrarily
246 ** complex per-thread data.
248 thread_data = malloc(sizeof(libthreaddata_t));
251 thread_data->_errno = 0;
252 thread_data->twentybytes = malloc(20);
254 if(!thread_data->twentybytes) {
256 thread_data = (libthreaddata_t *) NULL;
260 if((err = NXKeySetValue(key, thread_data))) {
261 free(thread_data->twentybytes);
263 thread_data = (libthreaddata_t *) NULL;
273 *threadData = thread_data;
278 int DisposeLibraryData( void *data )
281 void *tenbytes = ((libdata_t *) data)->tenbytes;
292 void DisposeThreadData( void *data )
295 void *twentybytes = ((libthreaddata_t *) data)->twentybytes;
304 #else /* __NOVELL_LIBC__ */
305 /* For native CLib-based NLM seems we can do a bit more simple. */
306 #include <nwthread.h>
310 /* initialize any globals here... */
312 /* do this if any global initializing was done
315 ExitThread (TSR_THREAD, 0);
319 #endif /* __NOVELL_LIBC__ */
324 # pragma warn(disable:2024) /* Disable warning #2024: Empty input file */