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 */
78 static int (*threadNumProgram) () = dummyThreadNum;
80 static int serverLogFD = -1;
83 int serverLogSyslog = 0;
84 int serverLogSyslogFacility = LOG_DAEMON;
85 char *serverLogSyslogTag = 0;
90 int mrafsStyleLogs = 0;
91 static int threadIdLogs = 0;
93 static char ourName[MAXPATHLEN];
96 SetLogThreadNumProgram(int (*func) () )
98 threadNumProgram = func;
102 WriteLogBuffer(char *buf, afs_uint32 len)
106 (void)write(serverLogFD, buf, len);
113 return (*threadNumProgram) ();
117 vFSLog(const char *format, va_list args)
126 currenttime = time(0);
127 timeStamp = afs_ctime(¤ttime, tbuffer, sizeof(tbuffer));
128 timeStamp[24] = ' '; /* ts[24] is the newline, 25 is the null */
129 info = &timeStamp[25];
131 if (mrafsStyleLogs || threadIdLogs) {
132 num = (*threadNumProgram) ();
134 (void)afs_snprintf(info, (sizeof tbuffer) - strlen(tbuffer), "[%d] ",
136 info += strlen(info);
140 (void)afs_vsnprintf(info, (sizeof tbuffer) - strlen(tbuffer), format,
143 len = strlen(tbuffer);
146 if (serverLogSyslog) {
147 syslog(LOG_INFO, "%s", info);
151 (void)write(serverLogFD, tbuffer, len);
154 #if !defined(AFS_PTHREAD_ENV) && !defined(AFS_NT40_ENV)
155 if (!serverLogSyslog) {
157 fflush(stderr); /* in case they're sharing the same FD */
165 FSLog(const char *format, ...)
169 va_start(args, format);
170 vFSLog(format, args);
175 DebugOn(int loglevel)
178 ViceLog(0, ("Reset Debug levels to 0\n"));
180 ViceLog(0, ("Set Debug On level = %d\n", loglevel));
188 SetDebug_Signal(int signo)
190 /* extern int IOMGR_SoftSig();*/
195 #if defined(AFS_PTHREAD_ENV)
196 if (LogLevel > 1 && threadNumProgram != NULL &&
204 #if defined(AFS_PTHREAD_ENV)
205 if (threadIdLogs == 1)
210 #if defined(AFS_PTHREAD_ENV)
212 #else /* AFS_PTHREAD_ENV */
213 IOMGR_SoftSig(DebugOn, LogLevel);
214 #endif /* AFS_PTHREAD_ENV */
216 (void)signal(signo, SetDebug_Signal); /* on some platforms, this
217 * signal handler needs to
219 } /*SetDebug_Signal */
222 ResetDebug_Signal(int signo)
228 #if defined(AFS_PTHREAD_ENV)
230 #else /* AFS_PTHREAD_ENV */
231 IOMGR_SoftSig(DebugOn, LogLevel);
232 #endif /* AFS_PTHREAD_ENV */
234 (void)signal(signo, ResetDebug_Signal); /* on some platforms,
235 * this signal handler
238 #if defined(AFS_PTHREAD_ENV)
239 if (threadIdLogs == 1)
243 OpenLog((char *)&ourName);
244 } /*ResetDebug_Signal */
248 SetupLogSignals(void)
250 (void)signal(SIGHUP, ResetDebug_Signal);
251 /* Note that we cannot use SIGUSR1 -- Linux stole it for pthreads! */
252 (void)signal(SIGTSTP, SetDebug_Signal);
254 (void)signal(SIGPIPE, SIG_IGN);
259 OpenLog(const char *fileName)
262 * This function should allow various libraries that inconsistently
263 * use stdout/stderr to all go to the same place
265 int tempfd, isfifo = 0;
266 char oldName[MAXPATHLEN];
267 struct timeval Start;
268 struct tm *TimeFields;
269 char FileName[MAXPATHLEN];
274 if (serverLogSyslog) {
275 openlog(serverLogSyslogTag, LOG_PID, serverLogSyslogFacility);
279 /* Support named pipes as logs by not rotating them */
280 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
285 if (mrafsStyleLogs) {
287 TM_GetTimeOfDay(&Start, 0);
289 TimeFields = localtime(&t);
291 if (strncmp(fileName, (char *)&ourName, strlen(fileName)))
292 strcpy((char *)&ourName, (char *)fileName);
294 afs_snprintf(FileName, MAXPATHLEN, "%s.%d%02d%02d%02d%02d%02d",
295 ourName, TimeFields->tm_year + 1900,
296 TimeFields->tm_mon + 1, TimeFields->tm_mday,
297 TimeFields->tm_hour, TimeFields->tm_min,
300 renamefile(fileName, FileName); /* don't check error code */
301 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
303 strcpy(oldName, fileName);
304 strcat(oldName, ".old");
306 /* don't check error */
308 renamefile(fileName, oldName);
309 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
313 printf("Unable to open log file %s\n", fileName);
316 /* redirect stdout and stderr so random printf's don't write to data */
317 (void)freopen(fileName, "a", stdout);
318 (void)freopen(fileName, "a", stderr);
320 #ifdef SETVBUF_REVERSED
321 setvbuf(stderr, _IONBF, NULL, 0);
323 setvbuf(stderr, NULL, _IONBF, 0);
326 setbuf(stderr, NULL);
329 #if defined(AFS_PTHREAD_ENV)
330 assert(pthread_mutex_init(&serverLogMutex, NULL) == 0);
331 #endif /* AFS_PTHREAD_ENV */
333 serverLogFD = tempfd;
339 ReOpenLog(const char *fileName)
342 #if !defined(AFS_PTHREAD_ENV)
345 #if !defined(AFS_NT40_ENV)
349 if (access(fileName, F_OK) == 0)
350 return 0; /* exists, no need to reopen. */
352 #if !defined(AFS_NT40_ENV)
353 if (serverLogSyslog) {
357 /* Support named pipes as logs by not rotating them */
358 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
366 serverLogFD = open(fileName, O_WRONLY | O_APPEND | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
367 if (serverLogFD > 0) {
368 (void)freopen(fileName, "a", stdout);
369 (void)freopen(fileName, "a", stderr);
371 #ifdef SETVBUF_REVERSED
372 setvbuf(stderr, _IONBF, NULL, 0);
374 setvbuf(stderr, NULL, _IONBF, 0);
377 setbuf(stderr, NULL);
382 return serverLogFD < 0 ? -1 : 0;