2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 /* serverLog.c - Server logging */
12 /* Information Technology Center */
15 /* Function - These routiens implement logging from the servers */
17 /* ********************************************************************** */
19 #include <afsconfig.h>
20 #include <afs/param.h>
32 #include <sys/param.h>
36 #include <afs/procmgmt.h> /* signal(), kill(), wait(), etc. */
48 #if defined(AFS_PTHREAD_ENV)
51 static pthread_mutex_t serverLogMutex;
52 #define LOCK_SERVERLOG() assert(pthread_mutex_lock(&serverLogMutex)==0)
53 #define UNLOCK_SERVERLOG() assert(pthread_mutex_unlock(&serverLogMutex)==0)
58 #define NULLDEV "/dev/null"
61 #else /* AFS_PTHREAD_ENV */
62 #define LOCK_SERVERLOG()
63 #define UNLOCK_SERVERLOG()
64 #endif /* AFS_PTHREAD_ENV */
70 char *(*threadNameProgram)();
72 static int serverLogFD = -1;
75 int serverLogSyslog = 0;
76 int serverLogSyslogFacility = LOG_DAEMON;
77 char *serverLogSyslogTag = 0;
82 int mrafsStyleLogs = 0;
84 static char ourName[MAXPATHLEN];
86 void WriteLogBuffer(char *buf, afs_uint32 len)
90 (void) write(serverLogFD, buf, len);
94 void vFSLog (const char *format, va_list args)
103 currenttime = time(0);
104 timeStamp = afs_ctime(¤ttime, tbuffer, sizeof(tbuffer));
105 timeStamp[24] = ' '; /* ts[24] is the newline, 25 is the null */
106 info = &timeStamp[25];
108 if (mrafsStyleLogs) {
109 name = (*threadNameProgram)();
110 (void) afs_snprintf(info, (sizeof tbuffer) - strlen(tbuffer),
112 info += strlen(info);
115 (void) afs_vsnprintf(info, (sizeof tbuffer) - strlen(tbuffer),
118 len = strlen(tbuffer);
121 if ( serverLogSyslog ){
122 syslog(LOG_INFO, "%s", info);
126 (void) write(serverLogFD, tbuffer, len);
129 #if !defined(AFS_PTHREAD_ENV) && !defined(AFS_NT40_ENV)
130 if ( ! serverLogSyslog ) {
132 fflush(stderr); /* in case they're sharing the same FD */
139 void FSLog(const char *format, ...)
143 va_start(args, format);
144 vFSLog(format, args);
148 static int DebugOn(int loglevel)
151 ViceLog(0, ("Reset Debug levels to 0\n"));
153 ViceLog(0, ("Set Debug On level = %d\n",loglevel));
160 void SetDebug_Signal(int signo)
162 extern int IOMGR_SoftSig();
171 #if defined(AFS_PTHREAD_ENV)
173 #else /* AFS_PTHREAD_ENV */
174 IOMGR_SoftSig(DebugOn, LogLevel);
175 #endif /* AFS_PTHREAD_ENV */
177 (void) signal(signo, SetDebug_Signal); /* on some platforms, this
178 * signal handler needs to
180 } /*SetDebug_Signal*/
182 void ResetDebug_Signal(int signo)
186 if (printLocks >0) --printLocks;
187 #if defined(AFS_PTHREAD_ENV)
189 #else /* AFS_PTHREAD_ENV */
190 IOMGR_SoftSig(DebugOn, (void *)LogLevel);
191 #endif /* AFS_PTHREAD_ENV */
193 (void) signal(signo, ResetDebug_Signal); /* on some platforms,
194 * this signal handler
198 OpenLog((char *)&ourName);
199 } /*ResetDebug_Signal*/
202 void SetupLogSignals(void)
204 (void) signal(SIGHUP, ResetDebug_Signal);
205 /* Note that we cannot use SIGUSR1 -- Linux stole it for pthreads! */
206 (void) signal(SIGTSTP, SetDebug_Signal);
209 int OpenLog(const char *fileName)
212 * This function should allow various libraries that inconsistently
213 * use stdout/stderr to all go to the same place
216 char oldName[MAXPATHLEN];
217 struct timeval Start;
218 struct tm *TimeFields;
219 char FileName[MAXPATHLEN];
222 if ( serverLogSyslog ) {
223 openlog(serverLogSyslogTag, LOG_PID, serverLogSyslogFacility);
228 if (mrafsStyleLogs) {
229 TM_GetTimeOfDay(&Start, 0);
230 TimeFields = localtime(&Start.tv_sec);
232 if (strncmp(fileName, (char *)&ourName, strlen(fileName)))
233 strcpy((char *)&ourName, (char *) fileName);
235 afs_snprintf(FileName, MAXPATHLEN, "%s.%d%02d%02d%02d%02d%02d",
237 TimeFields->tm_year + 1900, TimeFields->tm_mon + 1,
238 TimeFields->tm_mday, TimeFields->tm_hour,
239 TimeFields->tm_min, TimeFields->tm_sec);
240 rename (fileName, FileName); /* don't check error code */
241 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT, 0666);
243 strcpy(oldName, fileName);
244 strcat(oldName, ".old");
246 /* don't check error */
247 renamefile(fileName, oldName);
248 tempfd = open(fileName, O_WRONLY|O_TRUNC|O_CREAT, 0666);
253 printf("Unable to open log file %s\n", fileName);
257 #if defined(AFS_PTHREAD_ENV)
258 /* redirect stdout and stderr so random printf's don't write to data */
259 assert(freopen(NULLDEV, "w", stdout) != NULL);
260 assert(freopen(NULLDEV, "w", stderr) != NULL);
262 assert(pthread_mutex_init(&serverLogMutex, NULL) == 0);
264 serverLogFD = tempfd;
266 close(tempfd); /* just checking.... */
267 (void) freopen(fileName, "w", stdout);
268 (void) freopen(fileName, "w", stderr);
269 serverLogFD = fileno(stdout);
270 #endif /* AFS_PTHREAD_ENV */
275 int ReOpenLog(const char *fileName)
277 #if !defined(AFS_PTHREAD_ENV)
281 if (access(fileName, F_OK)==0)
282 return 0; /* exists, no need to reopen. */
284 #if !defined(AFS_NT40_ENV)
285 if ( serverLogSyslog ) {
290 #if defined(AFS_PTHREAD_ENV)
294 serverLogFD = open(fileName,O_WRONLY|O_APPEND|O_CREAT, 0666);
296 return serverLogFD < 0 ? -1 : 0;
299 tempfd = open(fileName,O_WRONLY|O_APPEND|O_CREAT, 0666);
302 printf("Unable to open log file %s\n", fileName);
307 (void) freopen(fileName, "a", stdout);
308 (void) freopen(fileName, "a", stderr);
309 serverLogFD = fileno(stdout);
313 #endif /* AFS_PTHREAD_ENV */