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>
33 #include <sys/param.h>
37 #include <afs/procmgmt.h> /* signal(), kill(), wait(), etc. */
50 #if defined(AFS_PTHREAD_ENV)
53 static pthread_mutex_t serverLogMutex;
54 #define LOCK_SERVERLOG() assert(pthread_mutex_lock(&serverLogMutex)==0)
55 #define UNLOCK_SERVERLOG() assert(pthread_mutex_unlock(&serverLogMutex)==0)
60 #define NULLDEV "/dev/null"
63 #else /* AFS_PTHREAD_ENV */
64 #define LOCK_SERVERLOG()
65 #define UNLOCK_SERVERLOG()
66 #endif /* AFS_PTHREAD_ENV */
73 static char *(*threadNameProgram) () = NULL;
75 static int serverLogFD = -1;
78 int serverLogSyslog = 0;
79 int serverLogSyslogFacility = LOG_DAEMON;
80 char *serverLogSyslogTag = 0;
85 int mrafsStyleLogs = 0;
86 static int threadIdLogs = 0;
88 static char ourName[MAXPATHLEN];
91 SetLogThreadNameProgram(char *(*func) () )
93 threadNameProgram = func;
97 WriteLogBuffer(char *buf, afs_uint32 len)
101 (void)write(serverLogFD, buf, len);
106 vFSLog(const char *format, va_list args)
115 currenttime = time(0);
116 timeStamp = afs_ctime(¤ttime, tbuffer, sizeof(tbuffer));
117 timeStamp[24] = ' '; /* ts[24] is the newline, 25 is the null */
118 info = &timeStamp[25];
120 if (mrafsStyleLogs || threadIdLogs) {
121 name = (*threadNameProgram) ();
123 (void)afs_snprintf(info, (sizeof tbuffer) - strlen(tbuffer), "[%s] ",
125 info += strlen(info);
129 (void)afs_vsnprintf(info, (sizeof tbuffer) - strlen(tbuffer), format,
132 len = strlen(tbuffer);
135 if (serverLogSyslog) {
136 syslog(LOG_INFO, "%s", info);
140 (void)write(serverLogFD, tbuffer, len);
143 #if !defined(AFS_PTHREAD_ENV) && !defined(AFS_NT40_ENV)
144 if (!serverLogSyslog) {
146 fflush(stderr); /* in case they're sharing the same FD */
154 FSLog(const char *format, ...)
158 va_start(args, format);
159 vFSLog(format, args);
164 DebugOn(int loglevel)
167 ViceLog(0, ("Reset Debug levels to 0\n"));
169 ViceLog(0, ("Set Debug On level = %d\n", loglevel));
177 SetDebug_Signal(int signo)
179 /* extern int IOMGR_SoftSig();*/
184 #if defined(AFS_PTHREAD_ENV)
185 if (LogLevel > 1 && threadNameProgram != NULL &&
193 #if defined(AFS_PTHREAD_ENV)
194 if (threadIdLogs == 1)
199 #if defined(AFS_PTHREAD_ENV)
201 #else /* AFS_PTHREAD_ENV */
202 IOMGR_SoftSig(DebugOn, LogLevel);
203 #endif /* AFS_PTHREAD_ENV */
205 (void)signal(signo, SetDebug_Signal); /* on some platforms, this
206 * signal handler needs to
208 } /*SetDebug_Signal */
211 ResetDebug_Signal(int signo)
217 #if defined(AFS_PTHREAD_ENV)
219 #else /* AFS_PTHREAD_ENV */
220 IOMGR_SoftSig(DebugOn, (void *)LogLevel);
221 #endif /* AFS_PTHREAD_ENV */
223 (void)signal(signo, ResetDebug_Signal); /* on some platforms,
224 * this signal handler
227 #if defined(AFS_PTHREAD_ENV)
228 if (threadIdLogs == 1)
232 OpenLog((char *)&ourName);
233 } /*ResetDebug_Signal */
237 SetupLogSignals(void)
239 (void)signal(SIGHUP, ResetDebug_Signal);
240 /* Note that we cannot use SIGUSR1 -- Linux stole it for pthreads! */
241 (void)signal(SIGTSTP, SetDebug_Signal);
243 (void)signal(SIGPIPE, SIG_IGN);
248 OpenLog(const char *fileName)
251 * This function should allow various libraries that inconsistently
252 * use stdout/stderr to all go to the same place
254 int tempfd, isfifo = 0;
255 char oldName[MAXPATHLEN];
256 struct timeval Start;
257 struct tm *TimeFields;
258 char FileName[MAXPATHLEN];
263 if (serverLogSyslog) {
264 openlog(serverLogSyslogTag, LOG_PID, serverLogSyslogFacility);
268 /* Support named pipes as logs by not rotating them */
269 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
274 if (mrafsStyleLogs) {
276 TM_GetTimeOfDay(&Start, 0);
278 TimeFields = localtime(&t);
280 if (strncmp(fileName, (char *)&ourName, strlen(fileName)))
281 strcpy((char *)&ourName, (char *)fileName);
283 afs_snprintf(FileName, MAXPATHLEN, "%s.%d%02d%02d%02d%02d%02d",
284 ourName, TimeFields->tm_year + 1900,
285 TimeFields->tm_mon + 1, TimeFields->tm_mday,
286 TimeFields->tm_hour, TimeFields->tm_min,
289 renamefile(fileName, FileName); /* don't check error code */
290 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
292 strcpy(oldName, fileName);
293 strcat(oldName, ".old");
295 /* don't check error */
297 renamefile(fileName, oldName);
298 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
302 printf("Unable to open log file %s\n", fileName);
305 #if defined(AFS_PTHREAD_ENV)
306 /* redirect stdout and stderr so random printf's don't write to data */
307 assert(freopen(NULLDEV, "w", stdout) != NULL);
308 assert(freopen(NULLDEV, "w", stderr) != NULL);
310 assert(pthread_mutex_init(&serverLogMutex, NULL) == 0);
312 serverLogFD = tempfd;
314 close(tempfd); /* just checking.... */
315 (void)freopen(fileName, "w", stdout);
316 (void)freopen(fileName, "w", stderr);
317 serverLogFD = fileno(stdout);
318 #endif /* AFS_PTHREAD_ENV */
324 ReOpenLog(const char *fileName)
327 #if !defined(AFS_PTHREAD_ENV)
330 #if !defined(AFS_NT40_ENV)
334 if (access(fileName, F_OK) == 0)
335 return 0; /* exists, no need to reopen. */
337 #if !defined(AFS_NT40_ENV)
338 if (serverLogSyslog) {
342 /* Support named pipes as logs by not rotating them */
343 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
348 #if defined(AFS_PTHREAD_ENV)
352 serverLogFD = open(fileName, O_WRONLY | O_APPEND | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
354 return serverLogFD < 0 ? -1 : 0;
357 tempfd = open(fileName, O_WRONLY | O_APPEND | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
359 printf("Unable to open log file %s\n", fileName);
364 (void)freopen(fileName, "a", stdout);
365 (void)freopen(fileName, "a", stderr);
366 serverLogFD = fileno(stdout);
370 #endif /* AFS_PTHREAD_ENV */