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. */
47 #if defined(AFS_PTHREAD_ENV)
50 static pthread_mutex_t serverLogMutex;
51 #define LOCK_SERVERLOG() assert(pthread_mutex_lock(&serverLogMutex)==0)
52 #define UNLOCK_SERVERLOG() assert(pthread_mutex_unlock(&serverLogMutex)==0)
57 #define NULLDEV "/dev/null"
60 #else /* AFS_PTHREAD_ENV */
61 #define LOCK_SERVERLOG()
62 #define UNLOCK_SERVERLOG()
63 #endif /* AFS_PTHREAD_ENV */
75 static int (*threadNumProgram) (void) = dummyThreadNum;
77 static int serverLogFD = -1;
80 int serverLogSyslog = 0;
81 int serverLogSyslogFacility = LOG_DAEMON;
82 char *serverLogSyslogTag = 0;
87 int mrafsStyleLogs = 0;
88 static int threadIdLogs = 0;
90 static char ourName[MAXPATHLEN];
93 SetLogThreadNumProgram(int (*func) (void) )
95 threadNumProgram = func;
99 WriteLogBuffer(char *buf, afs_uint32 len)
103 (void)write(serverLogFD, buf, len);
110 return (*threadNumProgram) ();
114 vFSLog(const char *format, va_list args)
123 currenttime = time(0);
124 timeStamp = afs_ctime(¤ttime, tbuffer, sizeof(tbuffer));
125 timeStamp[24] = ' '; /* ts[24] is the newline, 25 is the null */
126 info = &timeStamp[25];
128 if (mrafsStyleLogs || threadIdLogs) {
129 num = (*threadNumProgram) ();
131 (void)afs_snprintf(info, (sizeof tbuffer) - strlen(tbuffer), "[%d] ",
133 info += strlen(info);
137 (void)afs_vsnprintf(info, (sizeof tbuffer) - strlen(tbuffer), format,
140 len = strlen(tbuffer);
143 if (serverLogSyslog) {
144 syslog(LOG_INFO, "%s", info);
148 (void)write(serverLogFD, tbuffer, len);
151 #if !defined(AFS_PTHREAD_ENV) && !defined(AFS_NT40_ENV)
152 if (!serverLogSyslog) {
154 fflush(stderr); /* in case they're sharing the same FD */
162 FSLog(const char *format, ...)
166 va_start(args, format);
167 vFSLog(format, args);
172 LogCommandLine(int argc, char **argv, const char *progname,
173 const char *version, const char *logstring,
174 void (*log) (const char *format, ...))
177 char *commandLine, *cx;
179 for (l = i = 0; i < argc; i++)
180 l += strlen(argv[i]) + 1;
181 if ((commandLine = malloc(l))) {
182 for (cx = commandLine, i = 0; i < argc; i++) {
187 commandLine[l-1] = '\0';
188 (*log)("%s %s %s%s(%s)\n", logstring, progname,
189 version, strlen(version)>0?" ":"", commandLine);
192 /* What, we're out of memory already!? */
193 (*log)("%s %s%s%s\n", logstring,
194 progname, strlen(version)>0?" ":"", version);
201 int loglevel = (intptr_t)param;
203 ViceLog(0, ("Reset Debug levels to 0\n"));
205 ViceLog(0, ("Set Debug On level = %d\n", loglevel));
213 SetDebug_Signal(int signo)
218 #if defined(AFS_PTHREAD_ENV)
219 if (LogLevel > 1 && threadNumProgram != NULL &&
227 #if defined(AFS_PTHREAD_ENV)
228 if (threadIdLogs == 1)
233 #if defined(AFS_PTHREAD_ENV)
234 DebugOn((void *)(intptr_t)LogLevel);
235 #else /* AFS_PTHREAD_ENV */
236 IOMGR_SoftSig(DebugOn, (void *)(intptr_t)LogLevel);
237 #endif /* AFS_PTHREAD_ENV */
239 (void)signal(signo, SetDebug_Signal); /* on some platforms, this
240 * signal handler needs to
242 } /*SetDebug_Signal */
245 ResetDebug_Signal(int signo)
251 #if defined(AFS_PTHREAD_ENV)
252 DebugOn((void *)(intptr_t)LogLevel);
253 #else /* AFS_PTHREAD_ENV */
254 IOMGR_SoftSig(DebugOn, (void *)(intptr_t)LogLevel);
255 #endif /* AFS_PTHREAD_ENV */
257 (void)signal(signo, ResetDebug_Signal); /* on some platforms,
258 * this signal handler
261 #if defined(AFS_PTHREAD_ENV)
262 if (threadIdLogs == 1)
266 OpenLog((char *)&ourName);
267 } /*ResetDebug_Signal */
271 SetupLogSignals(void)
273 (void)signal(SIGHUP, ResetDebug_Signal);
274 /* Note that we cannot use SIGUSR1 -- Linux stole it for pthreads! */
275 (void)signal(SIGTSTP, SetDebug_Signal);
277 (void)signal(SIGPIPE, SIG_IGN);
282 OpenLog(const char *fileName)
285 * This function should allow various libraries that inconsistently
286 * use stdout/stderr to all go to the same place
288 int tempfd, isfifo = 0;
289 char oldName[MAXPATHLEN];
290 struct timeval Start;
291 struct tm *TimeFields;
292 char FileName[MAXPATHLEN];
297 if (serverLogSyslog) {
298 openlog(serverLogSyslogTag, LOG_PID, serverLogSyslogFacility);
302 /* Support named pipes as logs by not rotating them */
303 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
308 if (mrafsStyleLogs) {
311 FT_GetTimeOfDay(&Start, 0);
313 TimeFields = localtime(&t);
315 if (strncmp(fileName, (char *)&ourName, strlen(fileName)))
316 strcpy((char *)&ourName, (char *)fileName);
319 afs_snprintf(FileName, MAXPATHLEN, "%s.%d%02d%02d%02d%02d%02d",
320 ourName, TimeFields->tm_year + 1900,
321 TimeFields->tm_mon + 1, TimeFields->tm_mday,
322 TimeFields->tm_hour, TimeFields->tm_min,
324 if(lstat(FileName, &buf) == 0) {
325 /* avoid clobbering a log */
326 TimeFields->tm_sec++;
330 renamefile(fileName, FileName); /* don't check error code */
331 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
333 strcpy(oldName, fileName);
334 strcat(oldName, ".old");
336 /* don't check error */
338 renamefile(fileName, oldName);
339 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
343 printf("Unable to open log file %s\n", fileName);
346 /* redirect stdout and stderr so random printf's don't write to data */
347 (void)freopen(fileName, "a", stdout);
348 (void)freopen(fileName, "a", stderr);
350 setvbuf(stderr, NULL, _IONBF, 0);
352 setbuf(stderr, NULL);
355 #if defined(AFS_PTHREAD_ENV)
356 assert(pthread_mutex_init(&serverLogMutex, NULL) == 0);
357 #endif /* AFS_PTHREAD_ENV */
359 serverLogFD = tempfd;
365 ReOpenLog(const char *fileName)
368 #if !defined(AFS_NT40_ENV)
372 if (access(fileName, F_OK) == 0)
373 return 0; /* exists, no need to reopen. */
375 #if !defined(AFS_NT40_ENV)
376 if (serverLogSyslog) {
380 /* Support named pipes as logs by not rotating them */
381 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
389 serverLogFD = open(fileName, O_WRONLY | O_APPEND | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
390 if (serverLogFD > 0) {
391 (void)freopen(fileName, "a", stdout);
392 (void)freopen(fileName, "a", stderr);
394 #ifdef SETVBUF_REVERSED
395 setvbuf(stderr, _IONBF, NULL, 0);
397 setvbuf(stderr, NULL, _IONBF, 0);
400 setbuf(stderr, NULL);
405 return serverLogFD < 0 ? -1 : 0;