2 Unix SMB/CIFS implementation.
3 Samba utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Elrond 2002
6 Copyright (C) Simo Sorce 2002
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 /* -------------------------------------------------------------------------- **
27 * FORMAT_BUFR_MAX - Index of the last byte of the format buffer;
28 * format_bufr[FORMAT_BUFR_MAX] should always be reserved
29 * for a terminating null byte.
32 #define FORMAT_BUFR_SIZE 1024
33 #define FORMAT_BUFR_MAX (FORMAT_BUFR_SIZE - 1)
35 /* -------------------------------------------------------------------------- **
36 * This module implements Samba's debugging utility.
38 * The syntax of a debugging log file is represented as:
40 * <debugfile> :== { <debugmsg> }
42 * <debugmsg> :== <debughdr> '\n' <debugtext>
44 * <debughdr> :== '[' TIME ',' LEVEL ']' [ [FILENAME ':'] [FUNCTION '()'] ]
46 * <debugtext> :== { <debugline> }
48 * <debugline> :== TEXT '\n'
50 * TEXT is a string of characters excluding the newline character.
51 * LEVEL is the DEBUG level of the message (an integer in the range 0..10).
52 * TIME is a timestamp.
53 * FILENAME is the name of the file from which the debug message was generated.
54 * FUNCTION is the function from which the debug message was generated.
56 * Basically, what that all means is:
58 * - A debugging log file is made up of debug messages.
60 * - Each debug message is made up of a header and text. The header is
61 * separated from the text by a newline.
63 * - The header begins with the timestamp and debug level of the message
64 * enclosed in brackets. The filename and function from which the
65 * message was generated may follow. The filename is terminated by a
66 * colon, and the function name is terminated by parenthesis.
68 * - The message text is made up of zero or more lines, each terminated by
72 /* -------------------------------------------------------------------------- **
75 * dbf - Global debug file handle.
76 * debugf - Debug file name.
77 * DEBUGLEVEL - System-wide debug message limit. Messages with message-
78 * levels higher than DEBUGLEVEL will not be processed.
82 static char *debugf = NULL;
83 bool debug_warn_unknown_class = True;
84 bool debug_auto_add_unknown_class = True;
85 bool AllowDebugChange = True;
88 used to check if the user specified a
89 logfile on the command line
91 bool override_logfile;
93 static TALLOC_CTX *tmp_debug_ctx;
96 * This is to allow assignment to DEBUGLEVEL before the debug
97 * system has been initialised.
99 static int debug_all_class_hack = 1;
100 static bool debug_all_class_isset_hack = True;
102 static int debug_num_classes = 0;
103 int *DEBUGLEVEL_CLASS = &debug_all_class_hack;
104 bool *DEBUGLEVEL_CLASS_ISSET = &debug_all_class_isset_hack;
106 /* DEBUGLEVEL is #defined to *debug_level */
107 int DEBUGLEVEL = &debug_all_class_hack;
110 /* -------------------------------------------------------------------------- **
111 * Internal variables.
113 * stdout_logging - Default False, if set to True then dbf will be set to
114 * stdout and debug output will go to dbf only, and not
115 * to syslog. Set in setup_logging() and read in Debug1().
117 * debug_count - Number of debug messages that have been output.
118 * Used to check log size.
120 * syslog_level - Internal copy of the message debug level. Written by
121 * dbghdr() and read by Debug1().
123 * format_bufr - Used to format debug messages. The dbgtext() function
124 * prints debug messages to a string, and then passes the
125 * string to format_debug_text(), which uses format_bufr
126 * to build the formatted output.
128 * format_pos - Marks the first free byte of the format_bufr.
131 * log_overflow - When this variable is True, never attempt to check the
132 * size of the log. This is a hack, so that we can write
133 * a message using DEBUG, from open_logs() when we
134 * are unable to open a new log file for some reason.
137 static bool stdout_logging = False;
138 static int debug_count = 0;
140 static int syslog_level = 0;
142 static char *format_bufr = NULL;
143 static size_t format_pos = 0;
144 static bool log_overflow = False;
147 * Define all the debug class selection names here. Names *MUST NOT* contain
148 * white space. There must be one name for each DBGC_<class name>, and they
149 * must be in the table in the order of DBGC_<class name>..
151 static const char *default_classname_table[] = {
152 "all", /* DBGC_ALL; index refs traditional DEBUGLEVEL */
153 "tdb", /* DBGC_TDB */
154 "printdrivers", /* DBGC_PRINTDRIVERS */
155 "lanman", /* DBGC_LANMAN */
156 "smb", /* DBGC_SMB */
157 "rpc_parse", /* DBGC_RPC_PARSE */
158 "rpc_srv", /* DBGC_RPC_SRV */
159 "rpc_cli", /* DBGC_RPC_CLI */
160 "passdb", /* DBGC_PASSDB */
161 "sam", /* DBGC_SAM */
162 "auth", /* DBGC_AUTH */
163 "winbind", /* DBGC_WINBIND */
164 "vfs", /* DBGC_VFS */
165 "idmap", /* DBGC_IDMAP */
166 "quota", /* DBGC_QUOTA */
167 "acls", /* DBGC_ACLS */
168 "locking", /* DBGC_LOCKING */
169 "msdfs", /* DBGC_MSDFS */
170 "dmapi", /* DBGC_DMAPI */
171 "registry", /* DBGC_REGISTRY */
175 static char **classname_table = NULL;
178 /* -------------------------------------------------------------------------- **
182 /***************************************************************************
183 Free memory pointed to by global pointers.
184 ****************************************************************************/
186 void gfree_debugsyms(void)
190 if ( classname_table ) {
191 for ( i = 0; i < debug_num_classes; i++ ) {
192 SAFE_FREE( classname_table[i] );
194 SAFE_FREE( classname_table );
197 if ( DEBUGLEVEL_CLASS != &debug_all_class_hack )
198 SAFE_FREE( DEBUGLEVEL_CLASS );
200 if ( DEBUGLEVEL_CLASS_ISSET != &debug_all_class_isset_hack )
201 SAFE_FREE( DEBUGLEVEL_CLASS_ISSET );
203 SAFE_FREE(format_bufr);
206 /****************************************************************************
207 utility lists registered debug class names's
208 ****************************************************************************/
210 #define MAX_CLASS_NAME_SIZE 1024
212 static char *debug_list_class_names_and_levels(void)
220 if (DEBUGLEVEL_CLASS == &debug_all_class_hack) {
224 list = SMB_CALLOC_ARRAY(char *, debug_num_classes + 1);
229 /* prepare strings */
230 for (i = 0, dim = 0; i < debug_num_classes; i++) {
231 int l = asprintf(&list[i],
234 DEBUGLEVEL_CLASS_ISSET[i]?DEBUGLEVEL_CLASS[i]:DEBUGLEVEL);
235 if (l < 0 || l > MAX_CLASS_NAME_SIZE) {
242 /* create single string list - add space for newline */
243 b = buf = (char *)SMB_MALLOC(dim+1);
248 for (i = 0; i < debug_num_classes; i++) {
249 int l = strlen(list[i]);
250 strncpy(b, list[i], l);
253 b[-1] = '\n'; /* replace last space with newline */
254 b[0] = '\0'; /* null terminate string */
257 /* free strings list */
258 for (i = 0; i < debug_num_classes; i++) {
270 /****************************************************************************
271 Utility access to debug class names's.
272 ****************************************************************************/
274 const char *debug_classname_from_index(int ndx)
276 if (ndx < 0 || ndx >= debug_num_classes)
279 return classname_table[ndx];
282 /****************************************************************************
283 Utility to translate names to debug class index's (internal version).
284 ****************************************************************************/
286 static int debug_lookup_classname_int(const char* classname)
290 if (!classname) return -1;
292 for (i=0; i < debug_num_classes; i++) {
293 if (strcmp(classname, classname_table[i])==0)
299 /****************************************************************************
300 Add a new debug class to the system.
301 ****************************************************************************/
303 int debug_add_class(const char *classname)
311 /* check the init has yet been called */
314 ndx = debug_lookup_classname_int(classname);
317 ndx = debug_num_classes;
319 new_ptr = DEBUGLEVEL_CLASS;
320 if (DEBUGLEVEL_CLASS == &debug_all_class_hack) {
321 /* Initial loading... */
324 new_ptr = SMB_REALLOC_ARRAY(new_ptr, int, debug_num_classes + 1);
327 DEBUGLEVEL_CLASS = (int *)new_ptr;
328 DEBUGLEVEL_CLASS[ndx] = 0;
330 /* debug_level is the pointer used for the DEBUGLEVEL-thingy */
332 /* Transfer the initial level from debug_all_class_hack */
333 DEBUGLEVEL_CLASS[ndx] = DEBUGLEVEL;
335 debug_level = DEBUGLEVEL_CLASS;
337 new_ptr = DEBUGLEVEL_CLASS_ISSET;
338 if (new_ptr == &debug_all_class_isset_hack) {
341 new_ptr = SMB_REALLOC_ARRAY(new_ptr, bool, debug_num_classes + 1);
344 DEBUGLEVEL_CLASS_ISSET = (bool *)new_ptr;
345 DEBUGLEVEL_CLASS_ISSET[ndx] = False;
347 new_ptr = SMB_REALLOC_ARRAY(classname_table, char *, debug_num_classes + 1);
350 classname_table = (char **)new_ptr;
352 classname_table[ndx] = SMB_STRDUP(classname);
353 if (! classname_table[ndx])
361 /****************************************************************************
362 Utility to translate names to debug class index's (public version).
363 ****************************************************************************/
365 int debug_lookup_classname(const char *classname)
369 if (!classname || !*classname)
372 ndx = debug_lookup_classname_int(classname);
377 if (debug_warn_unknown_class) {
378 DEBUG(0, ("debug_lookup_classname(%s): Unknown class\n",
381 if (debug_auto_add_unknown_class) {
382 return debug_add_class(classname);
387 /****************************************************************************
388 Dump the current registered debug levels.
389 ****************************************************************************/
391 static void debug_dump_status(int level)
395 DEBUG(level, ("INFO: Current debug levels:\n"));
396 for (q = 0; q < debug_num_classes; q++) {
397 DEBUGADD(level, (" %s: %s/%d\n",
399 (DEBUGLEVEL_CLASS_ISSET[q]
401 DEBUGLEVEL_CLASS[q]));
405 /****************************************************************************
406 parse the debug levels from smbcontrol. Example debug level parameter:
408 ****************************************************************************/
410 static bool debug_parse_params(char **params)
419 /* Allow DBGC_ALL to be specified w/o requiring its class name e.g."10"
420 * v.s. "all:10", this is the traditional way to set DEBUGLEVEL
422 if (isdigit((int)params[0][0])) {
423 DEBUGLEVEL_CLASS[DBGC_ALL] = atoi(params[0]);
424 DEBUGLEVEL_CLASS_ISSET[DBGC_ALL] = True;
425 i = 1; /* start processing at the next params */
427 i = 0; /* DBGC_ALL not specified OR class name was included */
430 /* Fill in new debug class levels */
431 for (; i < debug_num_classes && params[i]; i++) {
432 if ((class_name=strtok(params[i],":")) &&
433 (class_level=strtok(NULL, "\0")) &&
434 ((ndx = debug_lookup_classname(class_name)) != -1)) {
435 DEBUGLEVEL_CLASS[ndx] = atoi(class_level);
436 DEBUGLEVEL_CLASS_ISSET[ndx] = True;
438 DEBUG(0,("debug_parse_params: unrecognized debug class name or format [%s]\n", params[i]));
446 /****************************************************************************
447 Parse the debug levels from smb.conf. Example debug level string:
448 3 tdb:5 printdrivers:7
449 Note: the 1st param has no "name:" preceeding it.
450 ****************************************************************************/
452 bool debug_parse_levels(const char *params_str)
459 if (AllowDebugChange == False)
462 params = str_list_make(params_str, NULL);
464 if (debug_parse_params(params)) {
465 debug_dump_status(5);
466 str_list_free(¶ms);
469 str_list_free(¶ms);
474 /****************************************************************************
475 Receive a "set debug level" message.
476 ****************************************************************************/
478 static void debug_message(struct messaging_context *msg_ctx,
481 struct server_id src,
484 const char *params_str = (const char *)data->data;
486 /* Check, it's a proper string! */
487 if (params_str[(data->length)-1] != '\0') {
488 DEBUG(1, ("Invalid debug message from pid %u to pid %u\n",
489 (unsigned int)procid_to_pid(&src),
490 (unsigned int)getpid()));
494 DEBUG(3, ("INFO: Remote set of debug to `%s' (pid %u from pid %u)\n",
495 params_str, (unsigned int)getpid(),
496 (unsigned int)procid_to_pid(&src)));
498 debug_parse_levels(params_str);
501 /****************************************************************************
502 Return current debug level.
503 ****************************************************************************/
505 static void debuglevel_message(struct messaging_context *msg_ctx,
508 struct server_id src,
511 char *message = debug_list_class_names_and_levels();
514 DEBUG(0,("debuglevel_message - debug_list_class_names_and_levels returned NULL\n"));
518 DEBUG(1,("INFO: Received REQ_DEBUGLEVEL message from PID %s\n",
519 procid_str_static(&src)));
520 messaging_send_buf(msg_ctx, src, MSG_DEBUGLEVEL,
521 (uint8 *)message, strlen(message) + 1);
526 /****************************************************************************
527 Init debugging (one time stuff)
528 ****************************************************************************/
530 void debug_init(void)
532 static bool initialised = False;
540 for(p = default_classname_table; *p; p++) {
543 format_bufr = (char *)SMB_MALLOC(FORMAT_BUFR_SIZE);
545 smb_panic("debug_init: unable to create buffer");
549 void debug_register_msgs(struct messaging_context *msg_ctx)
551 messaging_register(msg_ctx, NULL, MSG_DEBUG, debug_message);
552 messaging_register(msg_ctx, NULL, MSG_REQ_DEBUGLEVEL,
556 /***************************************************************************
557 Get ready for syslog stuff
558 **************************************************************************/
560 void setup_logging(const char *pname, bool interactive)
564 /* reset to allow multiple setup calls, going from interactive to
566 stdout_logging = False;
569 (void) x_fclose(dbf);
575 stdout_logging = True;
577 x_setbuf( x_stdout, NULL );
581 const char *p = strrchr_m( pname,'/' );
585 openlog( pname, LOG_PID, SYSLOG_FACILITY );
587 /* for old systems that have no facility codes. */
588 openlog( pname, LOG_PID );
594 /***************************************************************************
595 Set the logfile name.
596 **************************************************************************/
598 void debug_set_logfile(const char *name)
601 debugf = SMB_STRDUP(name);
604 /**************************************************************************
606 note that we now do this unconditionally
607 We attempt to open the new debug fp before closing the old. This means
608 if we run out of fd's we just keep using the old fd rather than aborting.
609 Fix from dgibson@linuxcare.com.
610 **************************************************************************/
612 bool reopen_logs( void )
616 XFILE *new_dbf = NULL;
617 XFILE *old_dbf = NULL;
623 oldumask = umask( 022 );
634 logfname = lp_logfile();
637 fname = SMB_STRDUP(logfname);
645 new_dbf = x_fopen( debugf, O_WRONLY|O_APPEND|O_CREAT, 0644);
649 DEBUG(0, ("Unable to open new log file %s: %s\n", debugf, strerror(errno)));
650 log_overflow = False;
655 x_setbuf(new_dbf, NULL);
659 (void) x_fclose(old_dbf);
662 /* Fix from klausr@ITAP.Physik.Uni-Stuttgart.De
663 * to fix problem where smbd's that generate less
664 * than 100 messages keep growing the log.
666 force_check_log_size();
667 (void)umask(oldumask);
669 /* Take over stderr to catch ouput into logs */
670 if (dbf && sys_dup2(x_fileno(dbf), 2) == -1) {
671 close_low_fds(True); /* Close stderr too, if dup2 can't point it
678 /**************************************************************************
679 Force a check of the log size.
680 ***************************************************************************/
682 void force_check_log_size( void )
687 /***************************************************************************
688 Check to see if there is any need to check if the logfile has grown too big.
689 **************************************************************************/
691 bool need_to_check_log_size( void )
695 if( debug_count < 100 )
698 maxlog = lp_max_log_size() * 1024;
699 if( !dbf || maxlog <= 0 ) {
706 /**************************************************************************
707 Check to see if the log has grown to be too big.
708 **************************************************************************/
710 void check_log_size( void )
716 * We need to be root to check/change log-file, skip this and let the main
717 * loop check do a new check as root.
723 if(log_overflow || !need_to_check_log_size() )
726 maxlog = lp_max_log_size() * 1024;
728 if( sys_fstat( x_fileno( dbf ), &st ) == 0 && st.st_size > maxlog ) {
730 if( dbf && get_file_size( debugf ) > maxlog ) {
733 if (asprintf(&name, "%s.old", debugf ) < 0) {
736 (void)rename(debugf, name);
738 if (!reopen_logs()) {
739 /* We failed to reopen a log - continue using the old name. */
740 (void)rename(name, debugf);
747 * Here's where we need to panic if dbf == NULL..
751 /* This code should only be reached in very strange
752 * circumstances. If we merely fail to open the new log we
753 * should stick with the old one. ergo this should only be
754 * reached when opening the logs for the first time: at
755 * startup or when the log level is increased from zero.
758 dbf = x_fopen( "/dev/console", O_WRONLY, 0);
760 DEBUG(0,("check_log_size: open of debug file %s failed - using console.\n",
764 * We cannot continue without a debug file handle.
772 /*************************************************************************
773 Write an debug message on the debugfile.
774 This is called by dbghdr() and format_debug_text().
775 ************************************************************************/
777 int Debug1( const char *format_str, ... )
780 int old_errno = errno;
784 if( stdout_logging ) {
785 va_start( ap, format_str );
787 (void)x_vfprintf( dbf, format_str, ap );
793 /* prevent recursion by checking if reopen_logs() has temporaily
794 set the debugf string to NULL */
799 if( !lp_syslog_only() )
803 mode_t oldumask = umask( 022 );
805 dbf = x_fopen( debugf, O_WRONLY|O_APPEND|O_CREAT, 0644 );
806 (void)umask( oldumask );
808 x_setbuf( dbf, NULL );
817 if( syslog_level < lp_syslog() ) {
818 /* map debug levels to syslog() priorities
819 * note that not all DEBUG(0, ...) calls are
820 * necessarily errors */
821 static int priority_map[] = {
830 if( syslog_level >= ( sizeof(priority_map) / sizeof(priority_map[0]) ) || syslog_level < 0)
831 priority = LOG_DEBUG;
833 priority = priority_map[syslog_level];
835 va_start(ap, format_str);
836 vasprintf(&msgbuf, format_str, ap);
840 syslog(priority, "%s", msgbuf);
849 if( !lp_syslog_only() )
852 va_start( ap, format_str );
854 (void)x_vfprintf( dbf, format_str, ap );
857 (void)x_fflush( dbf );
861 TALLOC_FREE(tmp_debug_ctx);
869 /**************************************************************************
870 Print the buffer content via Debug1(), then reset the buffer.
873 ****************************************************************************/
875 static void bufr_print( void )
877 format_bufr[format_pos] = '\0';
878 (void)Debug1( "%s", format_bufr );
882 /***************************************************************************
883 Format the debug message text.
885 Input: msg - Text to be added to the "current" debug message text.
889 Notes: The purpose of this is two-fold. First, each call to syslog()
890 (used by Debug1(), see above) generates a new line of syslog
891 output. This is fixed by storing the partial lines until the
892 newline character is encountered. Second, printing the debug
893 message lines when a newline is encountered allows us to add
894 spaces, thus indenting the body of the message and making it
896 **************************************************************************/
898 static void format_debug_text( const char *msg )
901 bool timestamp = (!stdout_logging && (lp_timestamp_logs() || !(lp_loaded())));
907 for( i = 0; msg[i]; i++ ) {
908 /* Indent two spaces at each new line. */
909 if(timestamp && 0 == format_pos) {
910 format_bufr[0] = format_bufr[1] = ' ';
914 /* If there's room, copy the character to the format buffer. */
915 if( format_pos < FORMAT_BUFR_MAX )
916 format_bufr[format_pos++] = msg[i];
918 /* If a newline is encountered, print & restart. */
922 /* If the buffer is full dump it out, reset it, and put out a line
923 * continuation indicator.
925 if( format_pos >= FORMAT_BUFR_MAX ) {
927 (void)Debug1( " +>\n" );
931 /* Just to be safe... */
932 format_bufr[format_pos] = '\0';
935 /***************************************************************************
936 Flush debug output, including the format buffer content.
940 ***************************************************************************/
942 void dbgflush( void )
946 (void)x_fflush( dbf );
949 /***************************************************************************
950 Print a Debug Header.
952 Input: level - Debug level of the message (not the system-wide debug
954 cls - Debuglevel class of the calling module.
955 file - Pointer to a string containing the name of the file
956 from which this function was called, or an empty string
957 if the __FILE__ macro is not implemented.
958 func - Pointer to a string containing the name of the function
959 from which this function was called, or an empty string
960 if the __FUNCTION__ macro is not implemented.
961 line - line number of the call to dbghdr, assuming __LINE__
964 Output: Always True. This makes it easy to fudge a call to dbghdr()
965 in a macro, since the function can be called as part of a test.
966 Eg: ( (level <= DEBUGLEVEL) && (dbghdr(level,"",line)) )
968 Notes: This function takes care of setting syslog_level.
970 ****************************************************************************/
972 bool dbghdr(int level, int cls, const char *file, const char *func, int line)
974 /* Ensure we don't lose any real errno value. */
975 int old_errno = errno;
978 /* This is a fudge. If there is stuff sitting in the format_bufr, then
979 * the *right* thing to do is to call
980 * format_debug_text( "\n" );
981 * to write the remainder, and then proceed with the new header.
982 * Unfortunately, there are several places in the code at which
983 * the DEBUG() macro is used to build partial lines. That in mind,
984 * we'll work under the assumption that an incomplete line indicates
985 * that a new header is *not* desired.
991 /* Set syslog_level. */
992 syslog_level = level;
995 /* Don't print a header if we're logging to stdout. */
999 /* Print the header if timestamps are turned on. If parameters are
1000 * not yet loaded, then default to timestamps on.
1002 if( lp_timestamp_logs() || lp_debug_prefix_timestamp() || !(lp_loaded()) ) {
1003 char header_str[200];
1005 header_str[0] = '\0';
1008 slprintf(header_str,sizeof(header_str)-1,", pid=%u",(unsigned int)sys_getpid());
1010 if( lp_debug_uid()) {
1011 size_t hs_len = strlen(header_str);
1012 slprintf(header_str + hs_len,
1013 sizeof(header_str) - 1 - hs_len,
1014 ", effective(%u, %u), real(%u, %u)",
1015 (unsigned int)geteuid(), (unsigned int)getegid(),
1016 (unsigned int)getuid(), (unsigned int)getgid());
1019 if (lp_debug_class() && (cls != DBGC_ALL)) {
1020 size_t hs_len = strlen(header_str);
1021 slprintf(header_str + hs_len,
1022 sizeof(header_str) -1 - hs_len,
1024 default_classname_table[cls]);
1027 /* Print it all out at once to prevent split syslog output. */
1028 if( lp_debug_prefix_timestamp() ) {
1029 (void)Debug1( "[%s, %2d%s] ",
1030 current_timestring(lp_debug_hires_timestamp()), level,
1033 (void)Debug1( "[%s, %2d%s] %s:%s(%d)\n",
1034 current_timestring(lp_debug_hires_timestamp()), level,
1035 header_str, file, func, line );
1043 /***************************************************************************
1044 Add text to the body of the "current" debug message via the format buffer.
1046 Input: format_str - Format string, as used in printf(), et. al.
1047 ... - Variable argument list.
1049 ..or.. va_alist - Old style variable parameter list starting point.
1051 Output: Always True. See dbghdr() for more info, though this is not
1052 likely to be used in the same way.
1054 ***************************************************************************/
1056 bool dbgtext( const char *format_str, ... )
1059 char *msgbuf = NULL;
1062 va_start(ap, format_str);
1063 vasprintf(&msgbuf, format_str, ap);
1067 format_debug_text(msgbuf);
1076 * Get us a temporary talloc context usable just for DEBUG arguments
1078 TALLOC_CTX *debug_ctx(void)
1080 if (tmp_debug_ctx == NULL) {
1081 tmp_debug_ctx = talloc_named_const(NULL, 0, "debug_ctx");
1083 return tmp_debug_ctx;