pegasus/src/Service/ServerRunStatus.cpp - annotate

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1 martin 1.9 //%LICENSE////////////////////////////////////////////////////////////////
2 martin 1.10 //
3 martin 1.9 // Licensed to The Open Group (TOG) under one or more contributor license 4 // agreements. Refer to the OpenPegasusNOTICE.txt file distributed with 5 // this work for additional information regarding copyright ownership. 6 // Each contributor licenses this file to you under the OpenPegasus Open 7 // Source License; you may not use this file except in compliance with the 8 // License.
9 martin 1.10 //
10 martin 1.9 // Permission is hereby granted, free of charge, to any person obtaining a 11 // copy of this software and associated documentation files (the "Software"), 12 // to deal in the Software without restriction, including without limitation 13 // the rights to use, copy, modify, merge, publish, distribute, sublicense, 14 // and/or sell copies of the Software, and to permit persons to whom the 15 // Software is furnished to do so, subject to the following conditions:
16 martin 1.10 //
17 martin 1.9 // The above copyright notice and this permission notice shall be included 18 // in all copies or substantial portions of the Software.
19 martin 1.10 //
20 martin 1.9 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21 martin 1.10 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 martin 1.9 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 23 // IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 24 // CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 25 // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 26 // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 martin 1.10 //
28 martin 1.9 //////////////////////////////////////////////////////////////////////////
29 kumpf 1.1 // 30 //%///////////////////////////////////////////////////////////////////////////// 31 32 #include <Pegasus/Common/System.h> 33 #include <Pegasus/Common/Signal.h> 34 #include <Pegasus/Common/AutoPtr.h>
35 kavita.gupta 1.11 #include <Pegasus/Common/Exception.h>
36 dl.meetei 1.15 #include <Pegasus/Common/Pegasus_inl.h>
37 kumpf 1.1 #include <Service/PidFile.h> 38 #include <Service/ServerRunStatus.h> 39 40 #include <sys/types.h> 41 #include <sys/stat.h> 42 43 #if defined(PEGASUS_OS_HPUX) 44 # include <sys/pstat.h> 45 # include <libgen.h> 46 #endif 47
48 r.kieninger 1.8 #if defined(PEGASUS_OS_ZOS)
49 kumpf 1.1 # include <sys/ps.h> 50 #endif 51
52 ouyang.jian 1.6 #if defined(PEGASUS_OS_AIX) \|\| defined(PEGASUS_OS_PASE)
53 dave.sudlik 1.7 # include <procinfo.h> 54 # define PROCSIZE sizeof(struct procsinfo) 55 # if PEGASUS_AIX_VERSION <= 5 56 // AIX version 5 does not define getprocs() in procinfo.h
57 kumpf 1.1 extern "C" 58 {
59 dave.sudlik 1.7 extern int getprocs( 60 struct procsinfo , int, struct fdsinfo , int,pid_t *,int);
61 kumpf 1.1 }
62 dave.sudlik 1.7 # endif
63 kumpf 1.1 #endif 64 65 PEGASUS_NAMESPACE_BEGIN 66 67 #ifdef PEGASUS_OS_TYPE_WINDOWS 68 69 ////////////////////////////////////// 70 // 71 // Windows implementation 72 // 73 ////////////////////////////////////// 74 75 ServerRunStatus::ServerRunStatus( 76 const char* serverName, 77 const char* pidFilePath) 78 : _serverName(serverName), 79 _pidFilePath(pidFilePath),
80 kumpf 1.5 _isRunningServerInstance(false),
81 kumpf 1.1 _parentPid(0), 82 _event(NULL), 83 _wasAlreadyRunning(false) 84 { 85 } 86 87 ServerRunStatus::~ServerRunStatus() 88 {
89 venkat.puvvada 1.12 setServerNotRunning();
90 kumpf 1.1 } 91 92 Boolean ServerRunStatus::isServerRunning() 93 {
94 dave.sudlik 1.3 return _wasAlreadyRunning;
95 kumpf 1.1 } 96
97 venkat.puvvada 1.12 void ServerRunStatus::setServerNotRunning() 98 { 99 if (_event != NULL) 100 { 101 CloseHandle(_event); 102 _event = NULL; 103 } 104 } 105
106 kumpf 1.1 void ServerRunStatus::setServerRunning() 107 { 108 if (_event == NULL) 109 { 110 _event = CreateEvent(NULL, TRUE, TRUE, _serverName);
111 kavita.gupta 1.11 if (_event == NULL) 112 { 113 throw Exception(MessageLoaderParms( 114 "src.Server.cimserver_windows.EVENT_CREATION_FAILED", 115 "Event Creation Failed : $0.", 116 PEGASUS_SYSTEM_ERRORMSG_NLS)); 117 }
118 kumpf 1.1 if ((_event != NULL) && (GetLastError() != ERROR_ALREADY_EXISTS)) 119 {
120 dev.meetei 1.14 _wasAlreadyRunning = false;
121 kumpf 1.1 } 122 } 123 } 124 125 void ServerRunStatus::setParentPid(PEGASUS_PID_T parentPid) 126 { 127 } 128 129 Boolean ServerRunStatus::kill() 130 { 131 return true; 132 } 133
134 carson.hovey 1.2 #elif defined(PEGASUS_OS_TYPE_UNIX) \|\| defined(PEGASUS_OS_VMS)
135 kumpf 1.1 136 ////////////////////////////////////// 137 // 138 // Unix and OpenVMS implementation 139 // 140 ////////////////////////////////////// 141 142 ServerRunStatus::ServerRunStatus( 143 const char* serverName, 144 const char* pidFilePath) 145 : _serverName(serverName), 146 _pidFilePath(pidFilePath),
147 kumpf 1.5 _isRunningServerInstance(false),
148 kumpf 1.1 _parentPid(0) 149 { 150 } 151 152 ServerRunStatus::~ServerRunStatus() 153 {
154 venkat.puvvada 1.12 setServerNotRunning(); 155 } 156 157 void ServerRunStatus::setServerNotRunning() 158 {
159 kumpf 1.5 if (_isRunningServerInstance) 160 { 161 PidFile pidFile(_pidFilePath); 162 pidFile.remove();
163 venkat.puvvada 1.12 _isRunningServerInstance = false;
164 kumpf 1.5 }
165 kumpf 1.1 } 166 167 Boolean ServerRunStatus::isServerRunning() 168 { 169 PidFile pidFile(_pidFilePath); 170 PEGASUS_PID_T pid = (PEGASUS_PID_T) pidFile.getPid(); 171 172 if (pid == 0) 173 { 174 return false; 175 } 176 177 return (pid != (PEGASUS_PID_T) System::getPID()) && 178 (pid != _parentPid) && 179 _isServerProcess(pid); 180 } 181 182 void ServerRunStatus::setServerRunning() 183 { 184 PidFile pidFile(_pidFilePath); 185 pidFile.setPid(System::getPID());
186 kumpf 1.5 _isRunningServerInstance = true;
187 kumpf 1.1 } 188 189 void ServerRunStatus::setParentPid(PEGASUS_PID_T parentPid) 190 { 191 _parentPid = parentPid; 192 } 193 194 Boolean ServerRunStatus::kill() 195 { 196 PidFile pidFile(_pidFilePath); 197 PEGASUS_PID_T pid = (PEGASUS_PID_T) pidFile.getPid(); 198 199 if ((pid == 0) \|\| 200 (pid == (PEGASUS_PID_T) System::getPID()) \|\| 201 (pid == _parentPid) \|\| 202 !_isServerProcess(pid)) 203 { 204 pidFile.remove(); 205 return false; 206 } 207 208 kumpf 1.1 #if defined(PEGASUS_OS_HPUX) \|\| \ 209 defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU) \|\| \ 210 defined(PEGASUS_OS_SOLARIS) \|\| \
211 r.kieninger 1.8 defined(PEGASUS_OS_ZOS) \|\| \
212 ouyang.jian 1.6 defined(PEGASUS_OS_AIX) \|\| defined(PEGASUS_OS_PASE)
213 kumpf 1.1 214 ::kill(pid, SIGKILL); 215 216 #endif 217 218 pidFile.remove(); 219 return true; 220 } 221
222 r.kieninger 1.8 # if defined(PEGASUS_OS_ZOS)
223 kumpf 1.1 224 /////////////////////////////////////////////////////// 225 // z/OS implementation of _isServerProcess 226 /////////////////////////////////////////////////////// 227 Boolean ServerRunStatus::_isServerProcess(PEGASUS_PID_T pid) 228 { 229 W_PSPROC buf; 230 int token = 0; 231 memset(&buf, 0x00, sizeof(buf)); 232 buf.ps_conttyptr =(char ) malloc(buf.ps_conttylen =PS_CONTTYBLEN); 233 buf.ps_pathptr =(char ) malloc(buf.ps_pathlen =PS_PATHBLEN); 234 buf.ps_cmdptr =(char ) malloc(buf.ps_cmdlen =PS_CMDBLEN); 235 Boolean returnValue = false; 236 237 while ((token = w_getpsent(token, &buf, sizeof(buf))) > 0) 238 { 239 if (buf.ps_pid == pid) 240 { 241 // If the process id is associated with the server program, 242 // then a server is still running. 243 if (strstr(buf.ps_pathptr, _serverName) != NULL) 244 kumpf 1.1 { 245 returnValue = true; 246 } 247 // else the pid was not associated with the server 248 break; 249 } 250 } 251 252 free(buf.ps_conttyptr); 253 free(buf.ps_pathptr); 254 free(buf.ps_cmdptr); 255 return returnValue; 256 } 257 258 # elif defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU) \|\| \ 259 defined(PEGASUS_OS_SOLARIS) 260 261 /////////////////////////////////////////////////////// 262 // Linux and Solaris implementation of _isServerProcess 263 /////////////////////////////////////////////////////// 264 / 265 kumpf 1.1 Opens the 'stat' file in the /proc/<pid> directory to 266 verify that the process name is that of the server. 267 / 268 static Boolean _isServerPidDir( 269 const char directory, 270 const char* serverProcessName) 271 { 272 static char filename[80]; 273 static char buffer[512]; 274 int fd, bytesRead; 275 276 // generate the name of the stat file in the process's /proc directory, 277 // and open it 278 sprintf(filename, "%s/%s", directory, "stat"); 279 if ( (fd = open(filename, O_RDONLY, 0)) == -1 ) 280 { 281 return false; 282 } 283 284 // read the contents 285 if ( (bytesRead = read( fd, buffer, (sizeof buffer) - 1 )) <= 0 ) 286 kumpf 1.1 { 287 close(fd); 288 return false; 289 } 290 291 // null terminate the file contents 292 buffer[bytesRead] = 0; 293 294 close(fd); 295 296 // the process name is the second element of the file contents and 297 // is surrounded by parentheses. 298 // 299 // find the positions of the parentheses in the file contents 300 const char* openParen; 301 const char* closeParen; 302 303 openParen = strchr(buffer, '('); 304 closeParen = strchr(buffer, ')'); 305 if (openParen == NULL \|\| closeParen == NULL \|\| closeParen < openParen) 306 { 307 kumpf 1.1 return false; 308 } 309 310 // allocate memory for the result 311 AutoArrayPtr<char> processName(new char[closeParen - openParen]); 312 313 // copy the process name into the result 314 strncpy(processName.get(), openParen + 1, closeParen - openParen -1); 315 316 // strncpy doesn't NULL-terminate the result, so do it here 317 processName[closeParen - openParen -1] = '\0'; 318 319 return strcmp(processName.get(), serverProcessName) == 0; 320 } 321 322 Boolean ServerRunStatus::_isServerProcess(PEGASUS_PID_T pid) 323 { 324 // This method makes a stat() system call on the directory in /proc 325 // with a name that matches the pid of the server. It returns true 326 // if it successfully located the process dir and verified that the 327 // process name matches that of the server. 328 kumpf 1.1 329 static char path[32]; 330 static struct stat statBuffer; 331 332 sprintf(path, "/proc/%d", pid); 333 if (stat(path, &statBuffer) == -1) // process stopped running 334 { 335 return false; 336 } 337 338 // get the process name to make sure it is the cimserver process 339 // ATTN: skip verify for Solaris 340 # if !defined(PEGASUS_OS_SOLARIS) 341 if (!_isServerPidDir(path, _serverName)) 342 { 343 return false; 344 } 345 # endif 346 347 return true; 348 } 349 kumpf 1.1
350 ouyang.jian 1.6 # elif defined(PEGASUS_OS_AIX) \|\| defined(PEGASUS_OS_PASE)
351 kumpf 1.1 352 /////////////////////////////////////////////////////// 353 // AIX implementation of _isServerProcess 354 /////////////////////////////////////////////////////// 355 /* 356 Calls subroutine getprocs() to get information about all processes. 357 If successful, an array of procsinfo structures filled with process table 358 entries is returned. Otherwise, a null pointer is returned. 359 The output parameter cnt specifies the number of the processes in the 360 returned table. 361 / 362 static struct procsinfo _getProcessData(int& cnt) 363 { 364 struct procsinfo* proctable = NULL; 365 struct procsinfo* rtnp = NULL; 366 int count = 1048576; 367 int rtncnt; 368 int repeat = 1; 369 int nextp = 0; 370 371 cnt = 0; 372 kumpf 1.1 while (repeat && 373 (rtncnt = getprocs(rtnp, PROCSIZE, 0, 0, &nextp, count) > 0)) 374 { 375 if (!rtnp) 376 { 377 count=rtncnt; 378 proctable = (struct procsinfo) malloc((size_t) PROCSIZEcount); 379 if (!proctable) 380 { 381 return NULL; 382 } 383 rtnp = proctable; 384 nextp = 0; 385 } 386 else 387 { 388 cnt += rtncnt; 389 if (rtncnt >= count) 390 {
391 dl.meetei 1.16 proctable = (struct procsinfo *)peg_inln_realloc(
392 kumpf 1.1 (void)proctable, (size_t) (PROCSIZE(cnt+count))); 393 if (!proctable) 394 { 395 return NULL; 396 } 397 rtnp = proctable+(cnt); 398 } 399 else 400 { 401 repeat = 0; 402 } 403 } // end of if(!rtnp) 404 } //end of while 405 return proctable; 406 } 407 408 Boolean ServerRunStatus::_isServerProcess(PEGASUS_PID_T pid) 409 { 410 int count; 411 struct procsinfo* proctable; 412 413 kumpf 1.1 proctable = _getProcessData(count); 414 if (proctable == NULL) 415 { 416 return false; 417 } 418 419 for (int i=0; i < count; i++) 420 { 421 if (!strcmp(proctable[i].pi_comm, _serverName) && \ 422 proctable[i].pi_pid == pid) 423 { 424 free(proctable); 425 return true; 426 } 427 } 428 429 free(proctable); 430 return false; 431 } 432 433 # elif defined(PEGASUS_OS_HPUX) 434 kumpf 1.1 435 /////////////////////////////////////////////////////// 436 // HP-UX implementation of _isServerProcess 437 /////////////////////////////////////////////////////// 438 Boolean ServerRunStatus::_isServerProcess(PEGASUS_PID_T pid) 439 { 440 struct pst_status pstru; 441 442 if (pstat_getproc(&pstru, sizeof(struct pst_status), (size_t)0, pid) != -1) 443 { 444 // 445 // Gets the command basename disregarding the command parameters 446 // 447 char execName = strchr(pstru.pst_cmd,' '); 448 if (execName) 449 { 450 execName = '\0'; 451 } 452 execName = basename(pstru.pst_cmd); 453 454 if (strcmp(execName, _serverName) == 0) 455 kumpf 1.1 { 456 return true; 457 } 458 } 459 460 return false; 461 } 462 463 # else 464 465 /////////////////////////////////////////////////////// 466 // Generic implementation of _isServerProcess 467 /////////////////////////////////////////////////////// 468 Boolean ServerRunStatus::_isServerProcess(PEGASUS_PID_T pid) 469 { 470 return false; 471 } 472 473 # endif 474 475 #endif 476 kumpf 1.1 477 PEGASUS_NAMESPACE_END

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