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);
95 void FSLog (const char *format, ...)
106 currenttime = time(0);
107 timeStamp = afs_ctime(¤ttime, tbuffer, sizeof(tbuffer));
108 timeStamp[24] = ' '; /* ts[24] is the newline, 25 is the null */
109 info = &timeStamp[25];
111 if (mrafsStyleLogs) {
112 name = (*threadNameProgram)();
113 sprintf(info, "[%s] ", name);
114 info += strlen(info);
117 va_start(args, format);
118 (void) vsprintf(info, format, args);
121 len = strlen(tbuffer);
124 if ( serverLogSyslog ){
125 syslog(LOG_INFO, "%s", info);
129 write(serverLogFD, tbuffer, len);
132 #if !defined(AFS_PTHREAD_ENV) && !defined(AFS_NT40_ENV)
133 if ( ! serverLogSyslog ) {
135 fflush(stderr); /* in case they're sharing the same FD */
140 static int DebugOn(int loglevel)
143 ViceLog(0, ("Reset Debug levels to 0\n"));
145 ViceLog(0, ("Set Debug On level = %d\n",loglevel));
152 void SetDebug_Signal(int signo)
154 extern int IOMGR_SoftSig();
163 #if defined(AFS_PTHREAD_ENV)
165 #else /* AFS_PTHREAD_ENV */
166 IOMGR_SoftSig(DebugOn, LogLevel);
167 #endif /* AFS_PTHREAD_ENV */
169 signal(signo, SetDebug_Signal); /* on some platforms, this signal */
170 /* handler needs to be set again */
171 } /*SetDebug_Signal*/
173 void ResetDebug_Signal(int signo)
177 if (printLocks >0) --printLocks;
178 #if defined(AFS_PTHREAD_ENV)
180 #else /* AFS_PTHREAD_ENV */
181 IOMGR_SoftSig(DebugOn, (void *)LogLevel);
182 #endif /* AFS_PTHREAD_ENV */
184 signal(signo, ResetDebug_Signal); /* on some platforms, this signal */
185 /* handler needs to be set again */
187 OpenLog((char *)&ourName);
188 } /*ResetDebug_Signal*/
191 void SetupLogSignals(void)
193 signal(SIGHUP, ResetDebug_Signal);
194 /* Note that we cannot use SIGUSR1 -- Linux stole it for pthreads! */
195 signal(SIGTSTP, SetDebug_Signal);
198 int OpenLog(const char *fileName)
201 * This function should allow various libraries that inconsistently
202 * use stdout/stderr to all go to the same place
205 char oldName[MAXPATHLEN];
206 struct timeval Start;
207 struct tm *TimeFields;
208 char FileName[MAXPATHLEN];
211 if ( serverLogSyslog ) {
212 openlog(serverLogSyslogTag, LOG_PID, serverLogSyslogFacility);
217 if (mrafsStyleLogs) {
218 TM_GetTimeOfDay(&Start, 0);
219 TimeFields = localtime(&Start.tv_sec);
221 if (strncmp(fileName, (char *)&ourName, strlen(fileName)))
222 strcpy((char *)&ourName, (char *) fileName);
224 sprintf(FileName, "%s.%d%02d%02d%02d%02d%02d", ourName,
225 TimeFields->tm_year + 1900, TimeFields->tm_mon + 1,
226 TimeFields->tm_mday, TimeFields->tm_hour,
227 TimeFields->tm_min, TimeFields->tm_sec);
228 rename (fileName, FileName); /* don't check error code */
229 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT, 0666);
231 strcpy(oldName, fileName);
232 strcat(oldName, ".old");
234 /* don't check error */
235 renamefile(fileName, oldName);
236 tempfd = open(fileName, O_WRONLY|O_TRUNC|O_CREAT, 0666);
241 printf("Unable to open log file %s\n", fileName);
245 #if defined(AFS_PTHREAD_ENV)
246 /* redirect stdout and stderr so random printf's don't write to data */
247 assert(freopen(NULLDEV, "w", stdout) != NULL);
248 assert(freopen(NULLDEV, "w", stderr) != NULL);
250 assert(pthread_mutex_init(&serverLogMutex, NULL) == 0);
252 serverLogFD = tempfd;
254 close(tempfd); /* just checking.... */
255 freopen(fileName, "w", stdout);
256 freopen(fileName, "w", stderr);
257 serverLogFD = fileno(stdout);
258 #endif /* AFS_PTHREAD_ENV */
263 int ReOpenLog(const char *fileName)
265 #if !defined(AFS_PTHREAD_ENV)
269 if (access(fileName, F_OK)==0)
270 return 0; /* exists, no need to reopen. */
272 #if !defined(AFS_NT40_ENV)
273 if ( serverLogSyslog ) {
278 #if defined(AFS_PTHREAD_ENV)
282 serverLogFD = open(fileName,O_WRONLY|O_APPEND|O_CREAT, 0666);
284 return serverLogFD < 0 ? -1 : 0;
287 tempfd = open(fileName,O_WRONLY|O_APPEND|O_CREAT, 0666);
290 printf("Unable to open log file %s\n", fileName);
295 freopen(fileName, "a", stdout);
296 freopen(fileName, "a", stderr);
297 serverLogFD = fileno(stdout);
301 #endif /* AFS_PTHREAD_ENV */