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>
31 #include <sys/param.h>
35 #include <afs/procmgmt.h> /* signal(), kill(), wait(), etc. */
43 #if defined(AFS_PTHREAD_ENV)
46 static pthread_mutex_t serverLogMutex;
47 #define LOCK_SERVERLOG() assert(pthread_mutex_lock(&serverLogMutex)==0)
48 #define UNLOCK_SERVERLOG() assert(pthread_mutex_unlock(&serverLogMutex)==0)
53 #define NULLDEV "/dev/null"
56 #else /* AFS_PTHREAD_ENV */
57 #define LOCK_SERVERLOG()
58 #define UNLOCK_SERVERLOG()
59 #endif /* AFS_PTHREAD_ENV */
71 static int (*threadNumProgram) (void) = dummyThreadNum;
73 static int serverLogFD = -1;
76 int serverLogSyslog = 0;
77 int serverLogSyslogFacility = LOG_DAEMON;
78 char *serverLogSyslogTag = 0;
83 int mrafsStyleLogs = 0;
84 static int threadIdLogs = 0;
86 static char ourName[MAXPATHLEN];
89 SetLogThreadNumProgram(int (*func) (void) )
91 threadNumProgram = func;
95 WriteLogBuffer(char *buf, afs_uint32 len)
99 (void)write(serverLogFD, buf, len);
106 return (*threadNumProgram) ();
110 vFSLog(const char *format, va_list args)
119 currenttime = time(0);
120 timeStamp = afs_ctime(¤ttime, tbuffer, sizeof(tbuffer));
121 timeStamp[24] = ' '; /* ts[24] is the newline, 25 is the null */
122 info = &timeStamp[25];
124 if (mrafsStyleLogs || threadIdLogs) {
125 num = (*threadNumProgram) ();
127 (void)afs_snprintf(info, (sizeof tbuffer) - strlen(tbuffer), "[%d] ",
129 info += strlen(info);
133 (void)afs_vsnprintf(info, (sizeof tbuffer) - strlen(tbuffer), format,
136 len = strlen(tbuffer);
139 if (serverLogSyslog) {
140 syslog(LOG_INFO, "%s", info);
144 (void)write(serverLogFD, tbuffer, len);
147 #if !defined(AFS_PTHREAD_ENV) && !defined(AFS_NT40_ENV)
148 if (!serverLogSyslog) {
150 fflush(stderr); /* in case they're sharing the same FD */
158 FSLog(const char *format, ...)
162 va_start(args, format);
163 vFSLog(format, args);
170 int loglevel = (int)param;
172 ViceLog(0, ("Reset Debug levels to 0\n"));
174 ViceLog(0, ("Set Debug On level = %d\n", loglevel));
182 SetDebug_Signal(int signo)
187 #if defined(AFS_PTHREAD_ENV)
188 if (LogLevel > 1 && threadNumProgram != NULL &&
196 #if defined(AFS_PTHREAD_ENV)
197 if (threadIdLogs == 1)
202 #if defined(AFS_PTHREAD_ENV)
203 DebugOn((void *) LogLevel);
204 #else /* AFS_PTHREAD_ENV */
205 IOMGR_SoftSig(DebugOn, (void *) LogLevel);
206 #endif /* AFS_PTHREAD_ENV */
208 (void)signal(signo, SetDebug_Signal); /* on some platforms, this
209 * signal handler needs to
211 } /*SetDebug_Signal */
214 ResetDebug_Signal(int signo)
220 #if defined(AFS_PTHREAD_ENV)
221 DebugOn((void *) LogLevel);
222 #else /* AFS_PTHREAD_ENV */
223 IOMGR_SoftSig(DebugOn, (void *) LogLevel);
224 #endif /* AFS_PTHREAD_ENV */
226 (void)signal(signo, ResetDebug_Signal); /* on some platforms,
227 * this signal handler
230 #if defined(AFS_PTHREAD_ENV)
231 if (threadIdLogs == 1)
235 OpenLog((char *)&ourName);
236 } /*ResetDebug_Signal */
240 SetupLogSignals(void)
242 (void)signal(SIGHUP, ResetDebug_Signal);
243 /* Note that we cannot use SIGUSR1 -- Linux stole it for pthreads! */
244 (void)signal(SIGTSTP, SetDebug_Signal);
246 (void)signal(SIGPIPE, SIG_IGN);
251 OpenLog(const char *fileName)
254 * This function should allow various libraries that inconsistently
255 * use stdout/stderr to all go to the same place
257 int tempfd, isfifo = 0;
258 char oldName[MAXPATHLEN];
259 struct timeval Start;
260 struct tm *TimeFields;
261 char FileName[MAXPATHLEN];
266 if (serverLogSyslog) {
267 openlog(serverLogSyslogTag, LOG_PID, serverLogSyslogFacility);
271 /* Support named pipes as logs by not rotating them */
272 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
277 if (mrafsStyleLogs) {
279 FT_GetTimeOfDay(&Start, 0);
281 TimeFields = localtime(&t);
283 if (strncmp(fileName, (char *)&ourName, strlen(fileName)))
284 strcpy((char *)&ourName, (char *)fileName);
286 afs_snprintf(FileName, MAXPATHLEN, "%s.%d%02d%02d%02d%02d%02d",
287 ourName, TimeFields->tm_year + 1900,
288 TimeFields->tm_mon + 1, TimeFields->tm_mday,
289 TimeFields->tm_hour, TimeFields->tm_min,
292 renamefile(fileName, FileName); /* don't check error code */
293 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
295 strcpy(oldName, fileName);
296 strcat(oldName, ".old");
298 /* don't check error */
300 renamefile(fileName, oldName);
301 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
305 printf("Unable to open log file %s\n", fileName);
308 /* redirect stdout and stderr so random printf's don't write to data */
309 (void)freopen(fileName, "a", stdout);
310 (void)freopen(fileName, "a", stderr);
312 #ifdef SETVBUF_REVERSED
313 setvbuf(stderr, _IONBF, NULL, 0);
315 setvbuf(stderr, NULL, _IONBF, 0);
318 setbuf(stderr, NULL);
321 #if defined(AFS_PTHREAD_ENV)
322 assert(pthread_mutex_init(&serverLogMutex, NULL) == 0);
323 #endif /* AFS_PTHREAD_ENV */
325 serverLogFD = tempfd;
331 ReOpenLog(const char *fileName)
334 #if !defined(AFS_NT40_ENV)
338 if (access(fileName, F_OK) == 0)
339 return 0; /* exists, no need to reopen. */
341 #if !defined(AFS_NT40_ENV)
342 if (serverLogSyslog) {
346 /* Support named pipes as logs by not rotating them */
347 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
355 serverLogFD = open(fileName, O_WRONLY | O_APPEND | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
356 if (serverLogFD > 0) {
357 (void)freopen(fileName, "a", stdout);
358 (void)freopen(fileName, "a", stderr);
360 #ifdef SETVBUF_REVERSED
361 setvbuf(stderr, _IONBF, NULL, 0);
363 setvbuf(stderr, NULL, _IONBF, 0);
366 setbuf(stderr, NULL);
371 return serverLogFD < 0 ? -1 : 0;