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. */
45 #if defined(AFS_PTHREAD_ENV)
48 static pthread_mutex_t serverLogMutex;
49 #define LOCK_SERVERLOG() assert(pthread_mutex_lock(&serverLogMutex)==0)
50 #define UNLOCK_SERVERLOG() assert(pthread_mutex_unlock(&serverLogMutex)==0)
55 #define NULLDEV "/dev/null"
58 #else /* AFS_PTHREAD_ENV */
59 #define LOCK_SERVERLOG()
60 #define UNLOCK_SERVERLOG()
61 #endif /* AFS_PTHREAD_ENV */
73 static int (*threadNumProgram) (void) = dummyThreadNum;
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 SetLogThreadNumProgram(int (*func) (void) )
93 threadNumProgram = func;
97 WriteLogBuffer(char *buf, afs_uint32 len)
101 (void)write(serverLogFD, buf, len);
108 return (*threadNumProgram) ();
112 vFSLog(const char *format, va_list args)
121 currenttime = time(0);
122 timeStamp = afs_ctime(¤ttime, tbuffer, sizeof(tbuffer));
123 timeStamp[24] = ' '; /* ts[24] is the newline, 25 is the null */
124 info = &timeStamp[25];
126 if (mrafsStyleLogs || threadIdLogs) {
127 num = (*threadNumProgram) ();
129 (void)afs_snprintf(info, (sizeof tbuffer) - strlen(tbuffer), "[%d] ",
131 info += strlen(info);
135 (void)afs_vsnprintf(info, (sizeof tbuffer) - strlen(tbuffer), format,
138 len = strlen(tbuffer);
141 if (serverLogSyslog) {
142 syslog(LOG_INFO, "%s", info);
146 (void)write(serverLogFD, tbuffer, len);
149 #if !defined(AFS_PTHREAD_ENV) && !defined(AFS_NT40_ENV)
150 if (!serverLogSyslog) {
152 fflush(stderr); /* in case they're sharing the same FD */
160 FSLog(const char *format, ...)
164 va_start(args, format);
165 vFSLog(format, args);
172 int loglevel = (int)param;
174 ViceLog(0, ("Reset Debug levels to 0\n"));
176 ViceLog(0, ("Set Debug On level = %d\n", loglevel));
184 SetDebug_Signal(int signo)
189 #if defined(AFS_PTHREAD_ENV)
190 if (LogLevel > 1 && threadNumProgram != NULL &&
198 #if defined(AFS_PTHREAD_ENV)
199 if (threadIdLogs == 1)
204 #if defined(AFS_PTHREAD_ENV)
205 DebugOn((void *) LogLevel);
206 #else /* AFS_PTHREAD_ENV */
207 IOMGR_SoftSig(DebugOn, (void *) LogLevel);
208 #endif /* AFS_PTHREAD_ENV */
210 (void)signal(signo, SetDebug_Signal); /* on some platforms, this
211 * signal handler needs to
213 } /*SetDebug_Signal */
216 ResetDebug_Signal(int signo)
222 #if defined(AFS_PTHREAD_ENV)
223 DebugOn((void *) LogLevel);
224 #else /* AFS_PTHREAD_ENV */
225 IOMGR_SoftSig(DebugOn, (void *) LogLevel);
226 #endif /* AFS_PTHREAD_ENV */
228 (void)signal(signo, ResetDebug_Signal); /* on some platforms,
229 * this signal handler
232 #if defined(AFS_PTHREAD_ENV)
233 if (threadIdLogs == 1)
237 OpenLog((char *)&ourName);
238 } /*ResetDebug_Signal */
242 SetupLogSignals(void)
244 (void)signal(SIGHUP, ResetDebug_Signal);
245 /* Note that we cannot use SIGUSR1 -- Linux stole it for pthreads! */
246 (void)signal(SIGTSTP, SetDebug_Signal);
248 (void)signal(SIGPIPE, SIG_IGN);
253 OpenLog(const char *fileName)
256 * This function should allow various libraries that inconsistently
257 * use stdout/stderr to all go to the same place
259 int tempfd, isfifo = 0;
260 char oldName[MAXPATHLEN];
261 struct timeval Start;
262 struct tm *TimeFields;
263 char FileName[MAXPATHLEN];
268 if (serverLogSyslog) {
269 openlog(serverLogSyslogTag, LOG_PID, serverLogSyslogFacility);
273 /* Support named pipes as logs by not rotating them */
274 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
279 if (mrafsStyleLogs) {
281 TM_GetTimeOfDay(&Start, 0);
283 TimeFields = localtime(&t);
285 if (strncmp(fileName, (char *)&ourName, strlen(fileName)))
286 strcpy((char *)&ourName, (char *)fileName);
288 afs_snprintf(FileName, MAXPATHLEN, "%s.%d%02d%02d%02d%02d%02d",
289 ourName, TimeFields->tm_year + 1900,
290 TimeFields->tm_mon + 1, TimeFields->tm_mday,
291 TimeFields->tm_hour, TimeFields->tm_min,
294 renamefile(fileName, FileName); /* don't check error code */
295 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
297 strcpy(oldName, fileName);
298 strcat(oldName, ".old");
300 /* don't check error */
302 renamefile(fileName, oldName);
303 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
307 printf("Unable to open log file %s\n", fileName);
310 /* redirect stdout and stderr so random printf's don't write to data */
311 (void)freopen(fileName, "a", stdout);
312 (void)freopen(fileName, "a", stderr);
314 #ifdef SETVBUF_REVERSED
315 setvbuf(stderr, _IONBF, NULL, 0);
317 setvbuf(stderr, NULL, _IONBF, 0);
320 setbuf(stderr, NULL);
323 #if defined(AFS_PTHREAD_ENV)
324 assert(pthread_mutex_init(&serverLogMutex, NULL) == 0);
325 #endif /* AFS_PTHREAD_ENV */
327 serverLogFD = tempfd;
333 ReOpenLog(const char *fileName)
336 #if !defined(AFS_NT40_ENV)
340 if (access(fileName, F_OK) == 0)
341 return 0; /* exists, no need to reopen. */
343 #if !defined(AFS_NT40_ENV)
344 if (serverLogSyslog) {
348 /* Support named pipes as logs by not rotating them */
349 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
357 serverLogFD = open(fileName, O_WRONLY | O_APPEND | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
358 if (serverLogFD > 0) {
359 (void)freopen(fileName, "a", stdout);
360 (void)freopen(fileName, "a", stderr);
362 #ifdef SETVBUF_REVERSED
363 setvbuf(stderr, _IONBF, NULL, 0);
365 setvbuf(stderr, NULL, _IONBF, 0);
368 setbuf(stderr, NULL);
373 return serverLogFD < 0 ? -1 : 0;