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>
23 #include <afs/procmgmt.h> /* signal(), kill(), wait(), etc. */
25 #include <roken.h> /* Must come after procmgmt.h */
32 #if defined(AFS_PTHREAD_ENV)
33 /* can't include rx when we are libutil; it's too early */
36 static pthread_mutex_t serverLogMutex;
37 #define LOCK_SERVERLOG() MUTEX_ENTER(&serverLogMutex)
38 #define UNLOCK_SERVERLOG() MUTEX_EXIT(&serverLogMutex)
43 #define NULLDEV "/dev/null"
46 #else /* AFS_PTHREAD_ENV */
47 #define LOCK_SERVERLOG()
48 #define UNLOCK_SERVERLOG()
49 #endif /* AFS_PTHREAD_ENV */
61 static int (*threadNumProgram) (void) = dummyThreadNum;
63 static int serverLogFD = -1;
66 int serverLogSyslog = 0;
67 int serverLogSyslogFacility = LOG_DAEMON;
68 char *serverLogSyslogTag = 0;
72 int mrafsStyleLogs = 0;
73 static int threadIdLogs = 0;
75 static char ourName[MAXPATHLEN];
78 SetLogThreadNumProgram(int (*func) (void) )
80 threadNumProgram = func;
84 WriteLogBuffer(char *buf, afs_uint32 len)
88 (void)write(serverLogFD, buf, len);
95 return (*threadNumProgram) ();
99 vFSLog(const char *format, va_list args)
108 currenttime = time(NULL);
109 len = strftime(tbuffer, sizeof(tbuffer), "%a %b %d %H:%M:%S %Y ",
110 localtime_r(¤ttime, &tm));
111 info = &tbuffer[len];
113 if (mrafsStyleLogs || threadIdLogs) {
114 num = (*threadNumProgram) ();
116 snprintf(info, (sizeof tbuffer) - strlen(tbuffer), "[%d] ",
118 info += strlen(info);
122 vsnprintf(info, (sizeof tbuffer) - strlen(tbuffer), format, args);
124 len = strlen(tbuffer);
127 if (serverLogSyslog) {
128 syslog(LOG_INFO, "%s", info);
132 (void)write(serverLogFD, tbuffer, len);
135 #if !defined(AFS_PTHREAD_ENV) && !defined(AFS_NT40_ENV)
136 if (!serverLogSyslog) {
138 fflush(stderr); /* in case they're sharing the same FD */
146 FSLog(const char *format, ...)
150 va_start(args, format);
151 vFSLog(format, args);
156 LogCommandLine(int argc, char **argv, const char *progname,
157 const char *version, const char *logstring,
158 void (*log) (const char *format, ...))
161 char *commandLine, *cx;
163 opr_Assert(argc > 0);
165 for (l = i = 0; i < argc; i++)
166 l += strlen(argv[i]) + 1;
167 if ((commandLine = malloc(l))) {
168 for (cx = commandLine, i = 0; i < argc; i++) {
173 commandLine[l-1] = '\0';
174 (*log)("%s %s %s%s(%s)\n", logstring, progname,
175 version, strlen(version)>0?" ":"", commandLine);
178 /* What, we're out of memory already!? */
179 (*log)("%s %s%s%s\n", logstring,
180 progname, strlen(version)>0?" ":"", version);
187 int loglevel = (intptr_t)param;
189 ViceLog(0, ("Reset Debug levels to 0\n"));
191 ViceLog(0, ("Set Debug On level = %d\n", loglevel));
199 SetDebug_Signal(int signo)
204 #if defined(AFS_PTHREAD_ENV)
205 if (LogLevel > 1 && threadNumProgram != NULL &&
213 #if defined(AFS_PTHREAD_ENV)
214 if (threadIdLogs == 1)
219 #if defined(AFS_PTHREAD_ENV)
220 DebugOn((void *)(intptr_t)LogLevel);
221 #else /* AFS_PTHREAD_ENV */
222 IOMGR_SoftSig(DebugOn, (void *)(intptr_t)LogLevel);
223 #endif /* AFS_PTHREAD_ENV */
225 (void)signal(signo, SetDebug_Signal); /* on some platforms, this
226 * signal handler needs to
228 } /*SetDebug_Signal */
231 ResetDebug_Signal(int signo)
237 #if defined(AFS_PTHREAD_ENV)
238 DebugOn((void *)(intptr_t)LogLevel);
239 #else /* AFS_PTHREAD_ENV */
240 IOMGR_SoftSig(DebugOn, (void *)(intptr_t)LogLevel);
241 #endif /* AFS_PTHREAD_ENV */
243 (void)signal(signo, ResetDebug_Signal); /* on some platforms,
244 * this signal handler
247 #if defined(AFS_PTHREAD_ENV)
248 if (threadIdLogs == 1)
252 OpenLog((char *)&ourName);
253 } /*ResetDebug_Signal */
257 SetupLogSignals(void)
259 (void)signal(SIGHUP, ResetDebug_Signal);
260 /* Note that we cannot use SIGUSR1 -- Linux stole it for pthreads! */
261 (void)signal(SIGTSTP, SetDebug_Signal);
263 (void)signal(SIGPIPE, SIG_IGN);
268 OpenLog(const char *fileName)
271 * This function should allow various libraries that inconsistently
272 * use stdout/stderr to all go to the same place
274 int tempfd, isfifo = 0;
275 char oldName[MAXPATHLEN];
276 struct timeval Start;
277 struct tm *TimeFields;
278 char FileName[MAXPATHLEN];
283 if (serverLogSyslog) {
284 openlog(serverLogSyslogTag, LOG_PID, serverLogSyslogFacility);
288 /* Support named pipes as logs by not rotating them */
289 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
294 if (mrafsStyleLogs) {
297 gettimeofday(&Start, NULL);
299 TimeFields = localtime(&t);
301 if (strncmp(fileName, (char *)&ourName, strlen(fileName)))
302 strcpy((char *)&ourName, (char *)fileName);
305 snprintf(FileName, MAXPATHLEN, "%s.%d%02d%02d%02d%02d%02d",
306 ourName, TimeFields->tm_year + 1900,
307 TimeFields->tm_mon + 1, TimeFields->tm_mday,
308 TimeFields->tm_hour, TimeFields->tm_min,
310 if(lstat(FileName, &buf) == 0) {
311 /* avoid clobbering a log */
312 TimeFields->tm_sec++;
316 renamefile(fileName, FileName); /* don't check error code */
317 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
319 strcpy(oldName, fileName);
320 strcat(oldName, ".old");
322 /* don't check error */
324 renamefile(fileName, oldName);
325 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
329 printf("Unable to open log file %s\n", fileName);
332 /* redirect stdout and stderr so random printf's don't write to data */
333 (void)freopen(fileName, "a", stdout);
334 (void)freopen(fileName, "a", stderr);
336 setvbuf(stderr, NULL, _IONBF, 0);
338 setbuf(stderr, NULL);
341 #if defined(AFS_PTHREAD_ENV)
342 MUTEX_INIT(&serverLogMutex, "serverlog", MUTEX_DEFAULT, 0);
343 #endif /* AFS_PTHREAD_ENV */
345 serverLogFD = tempfd;
351 ReOpenLog(const char *fileName)
354 #if !defined(AFS_NT40_ENV)
358 if (access(fileName, F_OK) == 0)
359 return 0; /* exists, no need to reopen. */
361 #if !defined(AFS_NT40_ENV)
362 if (serverLogSyslog) {
366 /* Support named pipes as logs by not rotating them */
367 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
375 serverLogFD = open(fileName, O_WRONLY | O_APPEND | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
376 if (serverLogFD > 0) {
377 (void)freopen(fileName, "a", stdout);
378 (void)freopen(fileName, "a", stderr);
380 #ifdef SETVBUF_REVERSED
381 setvbuf(stderr, _IONBF, NULL, 0);
383 setvbuf(stderr, NULL, _IONBF, 0);
386 setbuf(stderr, NULL);
391 return serverLogFD < 0 ? -1 : 0;