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 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 sprintf(info, "[%s] ", name);
111 info += strlen(info);
114 (void) vsprintf(info, format, args);
116 len = strlen(tbuffer);
119 if ( serverLogSyslog ){
120 syslog(LOG_INFO, "%s", info);
124 write(serverLogFD, tbuffer, len);
127 #if !defined(AFS_PTHREAD_ENV) && !defined(AFS_NT40_ENV)
128 if ( ! serverLogSyslog ) {
130 fflush(stderr); /* in case they're sharing the same FD */
137 void FSLog(const char *format, ...)
141 va_start(args, format);
142 vFSLog(format, args);
146 static int DebugOn(int loglevel)
149 ViceLog(0, ("Reset Debug levels to 0\n"));
151 ViceLog(0, ("Set Debug On level = %d\n",loglevel));
158 void SetDebug_Signal(int signo)
160 extern int IOMGR_SoftSig();
169 #if defined(AFS_PTHREAD_ENV)
171 #else /* AFS_PTHREAD_ENV */
172 IOMGR_SoftSig(DebugOn, LogLevel);
173 #endif /* AFS_PTHREAD_ENV */
175 signal(signo, SetDebug_Signal); /* on some platforms, this signal */
176 /* handler needs to be set again */
177 } /*SetDebug_Signal*/
179 void ResetDebug_Signal(int signo)
183 if (printLocks >0) --printLocks;
184 #if defined(AFS_PTHREAD_ENV)
186 #else /* AFS_PTHREAD_ENV */
187 IOMGR_SoftSig(DebugOn, (void *)LogLevel);
188 #endif /* AFS_PTHREAD_ENV */
190 signal(signo, ResetDebug_Signal); /* on some platforms, this signal */
191 /* handler needs to be set again */
193 OpenLog((char *)&ourName);
194 } /*ResetDebug_Signal*/
197 void SetupLogSignals(void)
199 signal(SIGHUP, ResetDebug_Signal);
200 /* Note that we cannot use SIGUSR1 -- Linux stole it for pthreads! */
201 signal(SIGTSTP, SetDebug_Signal);
204 int OpenLog(const char *fileName)
207 * This function should allow various libraries that inconsistently
208 * use stdout/stderr to all go to the same place
211 char oldName[MAXPATHLEN];
212 struct timeval Start;
213 struct tm *TimeFields;
214 char FileName[MAXPATHLEN];
217 if ( serverLogSyslog ) {
218 openlog(serverLogSyslogTag, LOG_PID, serverLogSyslogFacility);
223 if (mrafsStyleLogs) {
224 TM_GetTimeOfDay(&Start, 0);
225 TimeFields = localtime(&Start.tv_sec);
227 if (strncmp(fileName, (char *)&ourName, strlen(fileName)))
228 strcpy((char *)&ourName, (char *) fileName);
230 sprintf(FileName, "%s.%d%02d%02d%02d%02d%02d", ourName,
231 TimeFields->tm_year + 1900, TimeFields->tm_mon + 1,
232 TimeFields->tm_mday, TimeFields->tm_hour,
233 TimeFields->tm_min, TimeFields->tm_sec);
234 rename (fileName, FileName); /* don't check error code */
235 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT, 0666);
237 strcpy(oldName, fileName);
238 strcat(oldName, ".old");
240 /* don't check error */
241 renamefile(fileName, oldName);
242 tempfd = open(fileName, O_WRONLY|O_TRUNC|O_CREAT, 0666);
247 printf("Unable to open log file %s\n", fileName);
251 #if defined(AFS_PTHREAD_ENV)
252 /* redirect stdout and stderr so random printf's don't write to data */
253 assert(freopen(NULLDEV, "w", stdout) != NULL);
254 assert(freopen(NULLDEV, "w", stderr) != NULL);
256 assert(pthread_mutex_init(&serverLogMutex, NULL) == 0);
258 serverLogFD = tempfd;
260 close(tempfd); /* just checking.... */
261 freopen(fileName, "w", stdout);
262 freopen(fileName, "w", stderr);
263 serverLogFD = fileno(stdout);
264 #endif /* AFS_PTHREAD_ENV */
269 int ReOpenLog(const char *fileName)
271 #if !defined(AFS_PTHREAD_ENV)
275 if (access(fileName, F_OK)==0)
276 return 0; /* exists, no need to reopen. */
278 #if !defined(AFS_NT40_ENV)
279 if ( serverLogSyslog ) {
284 #if defined(AFS_PTHREAD_ENV)
288 serverLogFD = open(fileName,O_WRONLY|O_APPEND|O_CREAT, 0666);
290 return serverLogFD < 0 ? -1 : 0;
293 tempfd = open(fileName,O_WRONLY|O_APPEND|O_CREAT, 0666);
296 printf("Unable to open log file %s\n", fileName);
301 freopen(fileName, "a", stdout);
302 freopen(fileName, "a", stderr);
303 serverLogFD = fileno(stdout);
307 #endif /* AFS_PTHREAD_ENV */