pegasus/src/Service/ServerProcessUnix.cpp - annotate

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1 a.dunfey 1.6.2.1 //%2006////////////////////////////////////////////////////////////////////////
2 h.sterling 1.1 // 3 // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development 4 // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems. 5 // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.; 6 // IBM Corp.; EMC Corporation, The Open Group. 7 // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.; 8 // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group. 9 // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.; 10 // EMC Corporation; VERITAS Software Corporation; The Open Group.
11 a.dunfey 1.6.2.1 // Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.; 12 // EMC Corporation; Symantec Corporation; The Open Group.
13 h.sterling 1.1 // 14 // Permission is hereby granted, free of charge, to any person obtaining a copy 15 // of this software and associated documentation files (the "Software"), to 16 // deal in the Software without restriction, including without limitation the 17 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 18 // sell copies of the Software, and to permit persons to whom the Software is 19 // furnished to do so, subject to the following conditions: 20 // 21 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN 22 // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED 23 // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT 24 // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 25 // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 26 // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 27 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 29 // 30 //============================================================================== 31 // 32 // Author: Mike Day (mdday@us.ibm.com) 33 // 34 h.sterling 1.1 // Modified By: Jenny Yu, Hewlett-Packard Company (jenny_yu@hp.com) 35 // Yi Zhou, Hewlett-Packard Company (yi_zhou@hp.com) 36 // Marek Szermutzky, IBM (ddt6szer@de.ibm.com) 37 //%///////////////////////////////////////////////////////////////////////////// 38 #include <sys/types.h> 39 #include <sys/stat.h> 40 #if defined(PEGASUS_OS_HPUX) 41 #include <sys/pstat.h> 42 #endif 43 #include <fcntl.h> 44 #include <unistd.h> 45 #include <Pegasus/Common/Signal.h> 46 #if defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM) 47 #include <sys/ps.h> 48 #endif
49 w.otsuka 1.4 #define MAX_WAIT_TIME 240
50 h.sterling 1.1 #if defined(PEGASUS_OS_AIX) 51 extern "C" { 52 #include <procinfo.h> 53 extern int getprocs(struct procsinfo , int, struct fdsinfo , int,pid_t *,int); 54 #define PROCSIZE sizeof(struct procsinfo) 55 } 56 #endif 57 58 PEGASUS_USING_PEGASUS; 59 PEGASUS_USING_STD; 60 61 Boolean handleSigUsr1 = false; 62 Boolean graveError = false; 63 64 pid_t server_pid;
65 h.sterling 1.3 Uint32 parentPid = 0;
66 h.sterling 1.1 67 void sigUsr1Handler(int s_n, PEGASUS_SIGINFO_T * s_info, void * sig) 68 { 69 handleSigUsr1 = true; 70 } 71 72 void sigTermHandler(int s_n, PEGASUS_SIGINFO_T * s_info, void * sig) 73 { 74 graveError= handleSigUsr1=true; 75 } 76 77 78 //constructor 79 ServerProcess::ServerProcess() {} 80 81 //destructor 82 ServerProcess::~ServerProcess() {} 83 84 // no-ops 85 void ServerProcess::cimserver_set_process(void* p) {} 86 void ServerProcess::cimserver_exitRC(int rc) {} 87 h.sterling 1.1 int ServerProcess::cimserver_initialize(void) { return 1; } 88 int ServerProcess::cimserver_wait(void) { return 1; } 89 String ServerProcess::getHome(void) { return String::EMPTY; } 90 91 // daemon_init , RW Stevens, "Advance UNIX Programming" 92 93 int ServerProcess::cimserver_fork(void) 94 { 95 getSigHandle()->registerHandler(PEGASUS_SIGUSR1, sigUsr1Handler); 96 getSigHandle()->activate(PEGASUS_SIGUSR1); 97 getSigHandle()->registerHandler(SIGTERM, sigTermHandler); 98 getSigHandle()->activate(SIGTERM); 99 100 pid_t pid; 101 if( (pid = fork() ) < 0) 102 { 103 getSigHandle()->deactivate(PEGASUS_SIGUSR1); 104 getSigHandle()->deactivate(SIGTERM); 105 return(-1); 106 } 107 else if (pid != 0) 108 h.sterling 1.1 { 109 // 110 // parent wait for child 111 // if there is a problem with signal, parent process terminates 112 // when waitTime expires 113 // 114 Uint32 waitTime = MAX_WAIT_TIME; 115 116 while(!handleSigUsr1 && waitTime > 0) 117 { 118 sleep(1); 119 waitTime--; 120 }
121 w.otsuka 1.4 if( !handleSigUsr1 ) 122 { 123 MessageLoaderParms parms("src.Service.ServerProcessUnix.CIMSERVER_START_TIMEOUT", 124 "The cimserver command timed out waiting for the CIM server to start."); 125 PEGASUS_STD(cerr) << MessageLoader::getMessage(parms) << PEGASUS_STD(endl); 126 }
127 h.sterling 1.1 exit(graveError); 128 } 129 130 setsid(); 131 umask(0); 132 133 // get the pid of the cimserver process 134 server_pid = getpid(); 135 return(0); 136 } 137 138 long ServerProcess::get_server_pid() 139 { 140 return server_pid; 141 } 142
143 h.sterling 1.3 void ServerProcess::set_parent_pid(int pid) 144 { 145 parentPid = pid; 146 } 147 148
149 jim.wunderlich 1.5 #if defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU) \|\| defined(PEGASUS_OS_SOLARIS)
150 h.sterling 1.1 151 //=========================================================================== 152 // NAME : verify_process_name 153 // DESCRIPTION : Opens the 'stat' file in the /proc/<pid> directory to 154 // verify that the process name is that of the cimserver. 155 //=========================================================================== 156 int verify_process_name(char directory, const char server_process_name) 157 { 158 static char filename[80]; 159 static char buffer[512]; 160 int fd, bytesRead; 161 162 // generate the name of the stat file in the process's /proc directory, 163 // and open it 164 sprintf(filename, "%s/%s", directory, "stat"); 165 if ( (fd = open(filename, O_RDONLY, 0)) == -1 ) 166 { 167 return -1; 168 } 169 170 // read the contents 171 h.sterling 1.1 if ( (bytesRead = read( fd, buffer, (sizeof buffer) - 1 )) <= 0 ) 172 { 173 close(fd); 174 return -1; 175 } 176 177 // null terminate the file contents 178 buffer[bytesRead] = 0; 179 180 close(fd); 181 182 // the process name is the second element of the file contents and 183 // is surrounded by parentheses. 184 // 185 // find the positions of the parentheses in the file contents 186 char * open_paren; 187 char * close_paren; 188 189 open_paren = strchr (buffer, '('); 190 close_paren = strchr (buffer, ')'); 191 if (open_paren == NULL \|\| close_paren == NULL \|\| close_paren < open_paren) 192 h.sterling 1.1 { 193 return -1; 194 } 195 196 // allocate memory for the result
197 kumpf 1.6 AutoArrayPtr<char> process_name(new char[close_paren - open_paren]);
198 h.sterling 1.1 199 // copy the process name into the result
200 kumpf 1.6 strncpy (process_name.get(), open_paren + 1, close_paren - open_paren -1);
201 h.sterling 1.1 202 // strncpy doesn't NULL-terminate the result, so do it here
203 kumpf 1.6 process_name.get()[close_paren - open_paren -1] = '\0';
204 h.sterling 1.1
205 kumpf 1.6 if (strcmp(process_name.get(), server_process_name) != 0)
206 h.sterling 1.1 { 207 return -1; 208 } 209 210 return 0; 211 } 212 213 //============================================================================= 214 // NAME : get_proc 215 // DESCRIPTION : get_proc() makes a stat() system call on the directory in 216 // /proc with a name that matches the pid of the cimserver. 217 // It returns 0 if it successfully located the process dir 218 // and verified that the process name matches that of the 219 // cimserver. It returns -1 if it fails to open /proc, or 220 // the cimserver process does not exist. 221 //============================================================================= 222 int ServerProcess::get_proc(int pid) 223 { 224 static char path[32]; 225 static struct stat stat_buff; 226 227 h.sterling 1.1 sprintf(path, "/proc/%d", pid); 228 if (stat(path, &stat_buff) == -1) // process stopped running 229 { 230 return -1; 231 } 232 233 // get the process name to make sure it is the cimserver process 234 // ATTN: skip verify for Solaris
235 jim.wunderlich 1.5 #if !defined(PEGASUS_OS_SOLARIS)
236 h.sterling 1.1 if ((verify_process_name(path, getProcessName())) == -1) 237 { 238 return -1; 239 } 240 #endif 241 242 // 243 // Check to see if this command process has the same pid as the cimserver 244 // daemon process pid stored in the cimserver_start.conf file. Since the 245 // command has the same name as the cimserver daemon process, this could 246 // happen after a system reboot. If the pids are the same, cimserver 247 // isn't really running. 248 // 249 Uint32 mypid = System::getPID(); 250 if ((mypid == (unsigned)pid) \|\| ((unsigned)parentPid == (unsigned)pid)) 251 { 252 return -1; 253 } 254 return 0; 255 } 256 #endif 257 h.sterling 1.1 258 #if defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM) 259 Boolean isProcRunning(pid_t pid) 260 { 261 W_PSPROC buf; 262 int token = 0; 263 memset(&buf, 0x00, sizeof(buf)); 264 buf.ps_conttyptr =(char ) malloc(buf.ps_conttylen =PS_CONTTYBLEN); 265 buf.ps_pathptr =(char ) malloc(buf.ps_pathlen =PS_PATHBLEN); 266 buf.ps_cmdptr =(char ) malloc(buf.ps_cmdlen =PS_CMDBLEN); 267 268 token = w_getpsent(token, &buf, sizeof(buf)); 269 do { 270 token = w_getpsent(token, &buf, sizeof(buf)); 271 if (buf.ps_pid==pid) { 272 free(buf.ps_conttyptr); 273 free(buf.ps_pathptr); 274 free(buf.ps_cmdptr); 275 return true; 276 } 277 } while(token>0); 278 h.sterling 1.1 279 free(buf.ps_conttyptr); 280 free(buf.ps_pathptr); 281 free(buf.ps_cmdptr); 282 return false; 283 } 284 #endif 285 286 #if defined(PEGASUS_OS_AIX) 287 288 ///////////////////////////////////////////////////////////////////////////// 289 // NAME : processdata 290 // FUNCTION : it calls subroutine getprocs() to get information 291 // about all processes. 292 ///////////////////////////////////////////////////////////////////////////// 293 // ARGUMENTS: 294 // cnt: the number of the processes in the returned table 295 // RETURN VALUES: 296 // when it successfully gets the process table entries, 297 // an array of procsinfo structures filled with process table 298 // entries are returned. Otherewise, a null pointer is 299 h.sterling 1.1 // returned. 300 // 301 ///////////////////////////////////////////////////////////////////////////// 302 struct procsinfo processdata(int cnt) 303 { 304 struct procsinfo proctable=NULL, rtnp=NULL; 305 int count=1048576, rtncnt, repeat=1, nextp=0; 306 307 cnt=0; 308 while ( repeat && (rtncnt=getprocs(rtnp,PROCSIZE,0,0,&nextp, count))>0) 309 { 310 if (!rtnp) 311 { 312 count=rtncnt; 313 proctable=(struct procsinfo ) malloc((size_t) \ 314 PROCSIZEcount); 315 if (!proctable) 316 return NULL; 317 rtnp=proctable; 318 nextp=0; 319 } else 320 h.sterling 1.1 { 321 cnt+=rtncnt; 322 if (rtncnt>=count) 323 { 324 proctable=(struct procsinfo ) realloc(\ 325 (void)proctable, (size_t)\ 326 (PROCSIZE(cnt+count))); 327 if (!proctable) 328 return NULL; 329 rtnp=proctable+(cnt); 330 } else 331 repeat=0; 332 } // end of if(!rtnp) 333 } //end of while 334 return proctable; 335 } 336 337 ///////////////////////////////////////////////////////////////////////////// 338 // NAME : aixcimsrvrunning 339 // FUNCTION : it figures out if the cimserver process is running 340 // by checking the process table entries in the array 341 h.sterling 1.1 // returned from processdata(). If the cimserver process is 342 // running and its pid is the same as the pid in the file 343 // getPIDFileName(), it will return 0, otherwise it will 344 // return -1. 345 ///////////////////////////////////////////////////////////////////////////// 346 // ARGUMENTS: 347 // pid: the process identifier saved in the file 348 // getPIDFileName() 349 // RETURN VALUES: 350 // 0: successful 351 // -1: errors 352 // 353 ///////////////////////////////////////////////////////////////////////////// 354
355 h.sterling 1.2 int aixcimsrvrunning(pid_t pid, const char* processName)
356 h.sterling 1.1 { 357 int i,count; 358 struct procsinfo *proctable; 359 360 proctable=processdata(&count); 361 if (proctable==NULL) 362 return -1; 363 for (i=0;i<count;i++)
364 h.sterling 1.2 if (!strcmp(proctable[i].pi_comm, processName) && \
365 h.sterling 1.1 proctable[i].pi_pid==pid) 366 { 367 free(proctable); 368 return 0; 369 } 370 371 free(proctable); 372 return -1; 373 } 374 #endif 375 376 Boolean ServerProcess::isCIMServerRunning(void) 377 { 378 FILE *pid_file; 379 pid_t pid = 0; 380 381 // open the file containing the CIMServer process ID 382 pid_file = fopen(getPIDFileName(), "r"); 383 if (!pid_file) 384 { 385 return false; 386 h.sterling 1.1 } 387 388 // get the pid from the file 389 fscanf(pid_file, "%d\n", &pid); 390 391 fclose(pid_file); 392 393 if (pid == 0) 394 { 395 return false; 396 } 397 398 // 399 // check to see if cimserver process is alive 400 // 401 #if defined(PEGASUS_OS_HPUX) 402 struct pst_status pstru; 403 404 int ret_code; 405 ret_code = pstat_getproc(&pstru, sizeof(struct pst_status), (size_t)0, pid); 406 407 h.sterling 1.1 if ( (ret_code != -1 ) && (strcmp(pstru.pst_ucomm, getProcessName())) == 0) 408 { 409 // 410 // Check to see if this command process has the same pid as the 411 // cimserver daemon process pid stored in the cimserver_start.conf 412 // file. Since the command has the same name as the cimserver daemon 413 // process, this could happen after a system reboot. If the pids are 414 // the same, cimserver isn't really running. 415 // 416 Uint32 mypid = System::getPID(); 417 if ((mypid != pid) && (parentPid != pid)) 418 { 419 // cimserver is running 420 return true; 421 } 422 } 423 #endif
424 jim.wunderlich 1.5 #if defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU) \|\| defined(PEGASUS_OS_SOLARIS)
425 h.sterling 1.1 if (get_proc(pid) != -1 ) 426 { 427 // cimserver is running 428 return true; 429 } 430 #endif 431 #if defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM) 432 return isProcRunning(pid); 433 #endif 434 #if defined(PEGASUS_OS_AIX)
435 h.sterling 1.2 if (aixcimsrvrunning(pid, getProcessName())!=-1)
436 h.sterling 1.1 return true; 437 #endif 438 return false; 439 } 440 441 int ServerProcess::cimserver_kill(int id) 442 { 443 FILE *pid_file; 444 pid_t pid = 0; 445 446 // open the file containing the CIMServer process ID 447 pid_file = fopen(getPIDFileName(), "r"); 448 if (!pid_file) 449 { 450 return (-1); 451 } 452 453 // get the pid from the file 454 fscanf(pid_file, "%d\n", &pid); 455 456 fclose(pid_file); 457 h.sterling 1.1 458 if (pid == 0) 459 { 460 System::removeFile(getPIDFileName()); 461 return (-1); 462 } 463 464 // 465 // kill the process if it is still alive 466 // 467 #if defined(PEGASUS_OS_HPUX) 468 struct pst_status pstru; 469 470 int ret_code; 471 ret_code = pstat_getproc(&pstru, sizeof(struct pst_status), (size_t)0, pid); 472 473 if ( (ret_code != -1 ) && (strcmp(pstru.pst_ucomm, getProcessName())) == 0) 474 { 475 // cimserver is running, kill the process 476 kill(pid, SIGKILL); 477 } 478 h.sterling 1.1 #endif
479 jim.wunderlich 1.5 #if defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU) \|\| defined(PEGASUS_OS_SOLARIS)
480 h.sterling 1.1 if (get_proc(pid) != -1 ) 481 { 482 kill(pid, SIGKILL); 483 } 484 #endif 485 #if defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM) 486 if (isProcRunning(pid)) { 487 kill(pid, SIGKILL); 488 } 489 #endif 490 #if defined(PEGASUS_OS_AIX)
491 h.sterling 1.2 if (!aixcimsrvrunning(pid, getProcessName()))
492 h.sterling 1.1 kill(pid,SIGKILL); 493 #endif 494 // remove the file 495 System::removeFile(getPIDFileName()); 496 497 return(0); 498 } 499 500 // notify parent process to terminate so user knows that cimserver 501 // is ready to serve CIM requests. 502 void ServerProcess::notify_parent(int id) 503 { 504 pid_t ppid = getppid(); 505 if (id) 506 kill(ppid, SIGTERM); 507 else 508 kill(ppid, PEGASUS_SIGUSR1); 509 } 510 511 512 // Platform specific run
513 a.dunfey 1.6.2.1 int ServerProcess::platform_run( 514 int argc, 515 char** argv, 516 Boolean shutdownOption, 517 Boolean debugOutputOption)
518 h.sterling 1.1 {
519 a.dunfey 1.6.2.1 return cimserver_run(argc, argv, shutdownOption, debugOutputOption);
520 h.sterling 1.1 }

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