1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2012, 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 #include "curl_setup.h"
25 #ifdef NETWARE /* Novell NetWare */
27 #ifdef __NOVELL_LIBC__
28 /* For native LibC-based NLM we need to register as a real lib. */
32 #include <nks/thread.h>
33 #include <nks/synch.h>
35 #include "curl_memory.h"
36 /* The last #include file should be: */
51 NXKey_t perthreadkey; /* if -1, no key obtained... */
56 void *gLibHandle = (void *) NULL;
57 rtag_t gAllocTag = (rtag_t) NULL;
58 NXMutex_t *gLibLock = (NXMutex_t *) NULL;
60 /* internal library function prototypes... */
61 int DisposeLibraryData( void * );
62 void DisposeThreadData( void * );
63 int GetOrSetUpData( int id, libdata_t **data, libthreaddata_t **threaddata );
66 int _NonAppStart( void *NLMHandle,
69 const char *loadDirPath,
70 size_t uninitializedDataLength,
72 int (*readRoutineP)( int conn,
73 void *fileHandle, size_t offset,
77 size_t customDataOffset,
78 size_t customDataSize,
80 const char **messages )
82 NX_LOCK_INFO_ALLOC(liblock, "Per-Application Data Lock", 0);
85 #pragma unused(cmdLine)
86 #pragma unused(loadDirPath)
87 #pragma unused(uninitializedDataLength)
88 #pragma unused(NLMFileHandle)
89 #pragma unused(readRoutineP)
90 #pragma unused(customDataOffset)
91 #pragma unused(customDataSize)
92 #pragma unused(messageCount)
93 #pragma unused(messages)
97 * Here we process our command line, post errors (to the error screen),
98 * perform initializations and anything else we need to do before being able
99 * to accept calls into us. If we succeed, we return non-zero and the NetWare
100 * Loader will leave us up, otherwise we fail to load and get dumped.
102 gAllocTag = AllocateResourceTag(NLMHandle,
103 "<library-name> memory allocations",
107 OutputToScreen(errorScreen, "Unable to allocate resource tag for "
108 "library memory allocations.\n");
112 gLibId = register_library(DisposeLibraryData);
115 OutputToScreen(errorScreen, "Unable to register library with kernel.\n");
119 gLibHandle = NLMHandle;
121 gLibLock = NXMutexAlloc(0, 0, &liblock);
124 OutputToScreen(errorScreen, "Unable to allocate library data lock.\n");
132 * Here we clean up any resources we allocated. Resource tags is a big part
133 * of what we created, but NetWare doesn't ask us to free those.
135 void _NonAppStop( void )
137 (void) unregister_library(gLibId);
138 NXMutexFree(gLibLock);
142 * This function cannot be the first in the file for if the file is linked
143 * first, then the check-unload function's offset will be nlmname.nlm+0
144 * which is how to tell that there isn't one. When the check function is
145 * first in the linked objects, it is ambiguous. For this reason, we will
146 * put it inside this file after the stop function.
148 * Here we check to see if it's alright to ourselves to be unloaded. If not,
149 * we return a non-zero value. Right now, there isn't any reason not to allow
152 int _NonAppCheckUnload( void )
157 int GetOrSetUpData(int id, libdata_t **appData,
158 libthreaddata_t **threadData )
162 libthreaddata_t *thread_data;
164 NX_LOCK_INFO_ALLOC(liblock, "Application Data Lock", 0);
167 thread_data = (libthreaddata_t *) NULL;
170 * Attempt to get our data for the application calling us. This is where we
171 * store whatever application-specific information we need to carry in
172 * support of calling applications.
174 app_data = (libdata_t *) get_app_data(id);
178 * This application hasn't called us before; set up application AND
179 * per-thread data. Of course, just in case a thread from this same
180 * application is calling us simultaneously, we better lock our application
181 * data-creation mutex. We also need to recheck for data after we acquire
182 * the lock because WE might be that other thread that was too late to
183 * create the data and the first thread in will have created it.
187 if(!(app_data = (libdata_t *) get_app_data(id))) {
188 app_data = malloc(sizeof(libdata_t));
191 memset(app_data, 0, sizeof(libdata_t));
193 app_data->tenbytes = malloc(10);
194 app_data->lock = NXMutexAlloc(0, 0, &liblock);
196 if(!app_data->tenbytes || !app_data->lock) {
198 NXMutexFree(app_data->lock);
201 app_data = (libdata_t *) NULL;
207 * Here we burn in the application data that we were trying to get
208 * by calling get_app_data(). Next time we call the first function,
209 * we'll get this data we're just now setting. We also go on here to
210 * establish the per-thread data for the calling thread, something
211 * we'll have to do on each application thread the first time
214 err = set_app_data(gLibId, app_data);
218 app_data = (libdata_t *) NULL;
222 /* create key for thread-specific data... */
223 err = NXKeyCreate(DisposeThreadData, (void *) NULL, &key);
225 if(err) /* (no more keys left?) */
228 app_data->perthreadkey = key;
238 key = app_data->perthreadkey;
240 if(key != -1 /* couldn't create a key? no thread data */
241 && !(err = NXKeyGetValue(key, (void **) &thread_data))
244 * Allocate the per-thread data for the calling thread. Regardless of
245 * whether there was already application data or not, this may be the
246 * first call by a new thread. The fact that we allocation 20 bytes on
247 * a pointer is not very important, this just helps to demonstrate that
248 * we can have arbitrarily complex per-thread data.
250 thread_data = malloc(sizeof(libthreaddata_t));
253 thread_data->_errno = 0;
254 thread_data->twentybytes = malloc(20);
256 if(!thread_data->twentybytes) {
258 thread_data = (libthreaddata_t *) NULL;
262 if((err = NXKeySetValue(key, thread_data))) {
263 free(thread_data->twentybytes);
265 thread_data = (libthreaddata_t *) NULL;
275 *threadData = thread_data;
280 int DisposeLibraryData( void *data )
283 void *tenbytes = ((libdata_t *) data)->tenbytes;
294 void DisposeThreadData( void *data )
297 void *twentybytes = ((libthreaddata_t *) data)->twentybytes;
306 #else /* __NOVELL_LIBC__ */
307 /* For native CLib-based NLM seems we can do a bit more simple. */
308 #include <nwthread.h>
312 /* initialize any globals here... */
314 /* do this if any global initializing was done
317 ExitThread (TSR_THREAD, 0);
321 #endif /* __NOVELL_LIBC__ */
326 # pragma warn(disable:2024) /* Disable warning #2024: Empty input file */