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File: [Pegasus] / pegasus / src / Server / Attic / cimserver_unix.cpp
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Revision: 1.18, Wed May 7 17:48:16 2003 UTC (21 years, 2 months ago) by kumpf Branch: MAIN CVS Tags: PEGASUS_FC_VERSION_2_2 Changes since 1.17: +113 -5 lines HP-JY fixed bugzilla 300 (cimserver -s command returns control to the user before cimserver is completely shutdown). |
//%///////////////////////////////////////////////////////////////////////////// // // Copyright (c) 2000, 2001, 2002 BMC Software, Hewlett-Packard Company, IBM, // The Open Group, Tivoli Systems // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to // deal in the Software without restriction, including without limitation the // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or // sell copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. // //============================================================================== // // Author: Mike Day (mdday@us.ibm.com) // // Modified By: Jenny Yu, Hewlett-Packard Company (jenny_yu@hp.com) // Yi Zhou, Hewlett-Packard Company (yi_zhou@hp.com) // //%///////////////////////////////////////////////////////////////////////////// #include <sys/types.h> #include <sys/stat.h> #if defined(PEGASUS_OS_HPUX) #include <sys/pstat.h> #endif #include <fcntl.h> #include <unistd.h> #include <Pegasus/Common/Signal.h> #define MAX_WAIT_TIME 25 PEGASUS_USING_PEGASUS; PEGASUS_USING_STD; Boolean handleSigUsr1 = false; void cim_server_service(int argc, char **argv ) { return; } pid_t server_pid; void sigUsr1Handler(int s_n, PEGASUS_SIGINFO_T * s_info, void * sig) { handleSigUsr1 = true; } // daemon_init , RW Stevens, "Advance UNIX Programming" int cimserver_fork(void) { getSigHandle()->registerHandler(PEGASUS_SIGUSR1, sigUsr1Handler); getSigHandle()->activate(PEGASUS_SIGUSR1); pid_t pid; if( (pid = fork() ) < 0) { getSigHandle()->deactivate(PEGASUS_SIGUSR1); return(-1); } else if (pid != 0) { // // parent wait for child // if there is a problem with signal, parent process terminates // when waitTime expires // Uint32 waitTime = MAX_WAIT_TIME; while(!handleSigUsr1 && waitTime > 0) { sleep(1); waitTime--; } exit(0); } setsid(); umask(0); // get the pid of the cimserver process server_pid = getpid(); return(0); } #if defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU) //=========================================================================== // NAME : verify_process_name // DESCRIPTION : Opens the 'stat' file in the /proc/<pid> directory to // verify that the process name is that of the cimserver. //=========================================================================== int verify_process_name(char *directory) { static char filename[80]; static char buffer[512]; int fd, bytesRead; // generate the name of the stat file in the process's /proc directory, // and open it sprintf(filename, "%s/%s", directory, "stat"); if ( (fd = open(filename, O_RDONLY, 0)) == -1 ) { return -1; } // read the contents if ( (bytesRead = read( fd, buffer, (sizeof buffer) - 1 )) <= 0 ) { close(fd); return -1; } // null terminate the file contents buffer[bytesRead] = 0; close(fd); // the process name is the second element of the file contents and // is surrounded by parentheses. // // find the positions of the parentheses in the file contents char * open_paren; char * close_paren; open_paren = strchr (buffer, '('); close_paren = strchr (buffer, ')'); if (open_paren == NULL || close_paren == NULL || close_paren < open_paren) { return -1; } // allocate memory for the result char * process_name; process_name = (char*) malloc(close_paren - open_paren - 1); // copy the process name into the result strncpy (process_name, open_paren + 1, close_paren - open_paren -1); // strncpy doesn't NULL-terminate the result, so do it here process_name[close_paren - open_paren -1] = '\0'; if (strcmp(process_name, "cimserver") != 0) { return -1; } return 0; } //============================================================================= // NAME : get_proc // DESCRIPTION : get_proc() makes a stat() system call on the directory in // /proc with a name that matches the pid of the cimserver. // It returns 0 if it successfully located the process dir // and verified that the process name matches that of the // cimserver. It returns -1 if it fails to open /proc, or // the cimserver process does not exist. //============================================================================= int get_proc(int pid) { static char path[32]; static struct stat stat_buff; sprintf(path, "/proc/%d", pid); if (stat(path, &stat_buff) == -1) // process stopped running { return -1; } // get the process name to make sure it is the cimserver process if ((verify_process_name(path)) == -1) { return -1; } return 0; } #endif Boolean isCIMServerRunning(void) { FILE *pid_file; pid_t pid = 0; // open the file containing the CIMServer process ID pid_file = fopen(CIMSERVER_START_FILE, "rw"); if (!pid_file) { return false; } // get the pid from the file fscanf(pid_file, "%d\n", &pid); fclose(pid_file); if (pid == 0) { return false; } // // check to see if cimserver process is alive // #if defined(PEGASUS_OS_HPUX) struct pst_status pstru; int ret_code; ret_code = pstat_getproc(&pstru, sizeof(struct pst_status), (size_t)0, pid); if ( (ret_code != -1 ) && (strcmp(pstru.pst_ucomm, "cimserver")) == 0) { // cimserver is running return true; } #endif #if defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU) if (get_proc(pid) != -1 ) { // cimserver is running return true; } #endif return false; } int cimserver_kill(void) { FILE *pid_file; pid_t pid = 0; // open the file containing the CIMServer process ID pid_file = fopen(CIMSERVER_START_FILE, "r"); if (!pid_file) { return (-1); } // get the pid from the file fscanf(pid_file, "%d\n", &pid); fclose(pid_file); if (pid == 0) { System::removeFile(CIMSERVER_START_FILE); return (-1); } // // kill the process if it is still alive // #if defined(PEGASUS_OS_HPUX) struct pst_status pstru; int ret_code; ret_code = pstat_getproc(&pstru, sizeof(struct pst_status), (size_t)0, pid); if ( (ret_code != -1 ) && (strcmp(pstru.pst_ucomm, "cimserver")) == 0) { // cimserver is running, kill the process kill(pid, SIGKILL); } #endif #if defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU) if (get_proc(pid) != -1 ) { kill(pid, SIGKILL); } #endif // remove the file System::removeFile(CIMSERVER_START_FILE); return(0); } // notify parent process to terminate so user knows that cimserver // is ready to serve CIM requests. void notify_parent(void) { pid_t ppid = getppid(); kill(ppid, PEGASUS_SIGUSR1); }
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