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 #include "system/filesys.h"
25 #include "system/syslog.h"
26 #include "system/locale.h"
27 #include "time_basic.h"
28 #include "close_low_fd.h"
30 #include "samba_util.h" /* LIST_SEP */
33 /* define what facility to use for syslog */
34 #ifndef SYSLOG_FACILITY
35 #define SYSLOG_FACILITY LOG_DAEMON
38 /* -------------------------------------------------------------------------- **
43 * format_bufr[FORMAT_BUFR_SIZE - 1] should always be reserved
44 * for a terminating null byte.
46 #define FORMAT_BUFR_SIZE 1024
48 /* -------------------------------------------------------------------------- **
49 * This module implements Samba's debugging utility.
51 * The syntax of a debugging log file is represented as:
53 * <debugfile> :== { <debugmsg> }
55 * <debugmsg> :== <debughdr> '\n' <debugtext>
57 * <debughdr> :== '[' TIME ',' LEVEL ']' [ [FILENAME ':'] [FUNCTION '()'] ]
59 * <debugtext> :== { <debugline> }
61 * <debugline> :== TEXT '\n'
63 * TEXT is a string of characters excluding the newline character.
64 * LEVEL is the DEBUG level of the message (an integer in the range 0..10).
65 * TIME is a timestamp.
66 * FILENAME is the name of the file from which the debug message was generated.
67 * FUNCTION is the function from which the debug message was generated.
69 * Basically, what that all means is:
71 * - A debugging log file is made up of debug messages.
73 * - Each debug message is made up of a header and text. The header is
74 * separated from the text by a newline.
76 * - The header begins with the timestamp and debug level of the message
77 * enclosed in brackets. The filename and function from which the
78 * message was generated may follow. The filename is terminated by a
79 * colon, and the function name is terminated by parenthesis.
81 * - The message text is made up of zero or more lines, each terminated by
85 /* state variables for the debug system */
88 int fd; /* The log file handle */
89 enum debug_logtype logtype; /* The type of logging we are doing: eg stdout, file, stderr */
90 const char *prog_name;
92 bool schedule_reopen_logs;
94 struct debug_settings settings;
96 debug_callback_fn callback;
97 void *callback_private;
100 .timestamp_logs = true
102 .fd = 2 /* stderr by default */
106 static int debug_level_to_priority(int level)
109 * map debug levels to syslog() priorities note that not all
110 * DEBUG(0, ...) calls are necessarily errors
112 static const int priority_map[4] = {
120 if( level >= ARRAY_SIZE(priority_map) || level < 0)
121 priority = LOG_DEBUG;
123 priority = priority_map[level];
129 /* -------------------------------------------------------------------------- **
130 * Debug backends. When logging to DEBUG_FILE, send the log entries to
131 * all active backends.
134 static void debug_file_log(int msg_level,
135 const char *msg, const char *msg_no_nl)
138 write(state.fd, msg, strlen(msg));
142 static void debug_syslog_reload(bool enabled, bool previously_enabled,
143 const char *prog_name)
145 if (enabled && !previously_enabled) {
147 openlog(prog_name, LOG_PID, SYSLOG_FACILITY);
149 /* for old systems that have no facility codes. */
150 openlog(prog_name, LOG_PID );
155 if (!enabled && previously_enabled) {
160 static void debug_syslog_log(int msg_level,
161 const char *msg, const char *msg_no_nl)
165 priority = debug_level_to_priority(msg_level);
168 * Specify the facility to interoperate with other syslog
169 * callers (vfs_full_audit for example).
171 priority |= SYSLOG_FACILITY;
173 syslog(priority, "%s", msg);
175 #endif /* WITH_SYSLOG */
177 static struct debug_backend {
181 void (*reload)(bool enabled, bool prev_enabled, const char *prog_name);
182 void (*log)(int msg_level, const char *msg, const char *msg_no_nl);
183 } debug_backends[] = {
186 .log = debug_file_log,
191 .reload = debug_syslog_reload,
192 .log = debug_syslog_log,
197 static struct debug_backend *debug_find_backend(const char *name)
201 for (i = 0; i < ARRAY_SIZE(debug_backends); i++) {
202 if (strcmp(name, debug_backends[i].name) == 0) {
203 return &debug_backends[i];
211 * parse "backend[:option][@loglevel]
213 static void debug_backend_parse_token(char *tok)
215 char *backend_name_option, *backend_name,*backend_level, *saveptr;
216 struct debug_backend *b;
219 * First parse into backend[:option] and loglevel
221 backend_name_option = strtok_r(tok, "@\0", &saveptr);
222 if (backend_name_option == NULL) {
226 backend_level = strtok_r(NULL, "\0", &saveptr);
229 * Now parse backend[:option]
231 backend_name = strtok_r(backend_name_option, ":\0", &saveptr);
232 if (backend_name == NULL) {
237 * No backend is using the option yet.
240 backend_option = strtok_r(NULL, "\0", &saveptr);
244 * Find and update backend
246 b = debug_find_backend(backend_name);
251 if (backend_level == NULL) {
252 b->new_log_level = MAX_DEBUG_LEVEL;
254 b->new_log_level = atoi(backend_level);
259 * parse "backend1[:option1][@loglevel1] backend2[option2][@loglevel2] ... "
260 * and enable/disable backends accordingly
262 static void debug_set_backends(const char *param)
264 size_t str_len = strlen(param);
270 * initialize new_log_level to detect backends that have been
273 for (i = 0; i < ARRAY_SIZE(debug_backends); i++) {
274 debug_backends[i].new_log_level = -1;
277 memcpy(str, param, str_len + 1);
279 tok = strtok_r(str, LIST_SEP, &saveptr);
284 while (tok != NULL) {
285 debug_backend_parse_token(tok);
286 tok = strtok_r(NULL, LIST_SEP, &saveptr);
290 * Let backends react to config changes
292 for (i = 0; i < ARRAY_SIZE(debug_backends); i++) {
293 struct debug_backend *b = &debug_backends[i];
296 bool enabled = b->new_log_level > -1;
297 bool previously_enabled = b->log_level > -1;
299 b->reload(enabled, previously_enabled, state.prog_name);
301 b->log_level = b->new_log_level;
305 static void debug_backends_log(const char *msg, int msg_level)
307 char msg_no_nl[FORMAT_BUFR_SIZE];
311 * Some backends already add an extra newline, so also provide
312 * a buffer without the newline character.
314 len = MIN(strlen(msg), FORMAT_BUFR_SIZE - 1);
315 if (msg[len - 1] == '\n') {
319 memcpy(msg_no_nl, msg, len);
320 msg_no_nl[len] = '\0';
322 for (i = 0; i < ARRAY_SIZE(debug_backends); i++) {
323 if (msg_level <= debug_backends[i].log_level) {
324 debug_backends[i].log(msg_level, msg, msg_no_nl);
329 /* -------------------------------------------------------------------------- **
330 * External variables.
334 used to check if the user specified a
335 logfile on the command line
337 bool override_logfile;
340 * This is to allow reading of DEBUGLEVEL_CLASS before the debug
341 * system has been initialized.
343 static const int debug_class_list_initial[DBGC_MAX_FIXED + 1];
345 static int debug_num_classes = 0;
346 int *DEBUGLEVEL_CLASS = discard_const_p(int, debug_class_list_initial);
349 /* -------------------------------------------------------------------------- **
350 * Internal variables.
352 * debug_count - Number of debug messages that have been output.
353 * Used to check log size.
355 * current_msg_level - Internal copy of the message debug level. Written by
356 * dbghdr() and read by Debug1().
358 * format_bufr - Used to format debug messages. The dbgtext() function
359 * prints debug messages to a string, and then passes the
360 * string to format_debug_text(), which uses format_bufr
361 * to build the formatted output.
363 * format_pos - Marks the first free byte of the format_bufr.
366 * log_overflow - When this variable is true, never attempt to check the
367 * size of the log. This is a hack, so that we can write
368 * a message using DEBUG, from open_logs() when we
369 * are unable to open a new log file for some reason.
372 static int debug_count = 0;
373 static int current_msg_level = 0;
374 static char format_bufr[FORMAT_BUFR_SIZE];
375 static size_t format_pos = 0;
376 static bool log_overflow = false;
379 * Define all the debug class selection names here. Names *MUST NOT* contain
380 * white space. There must be one name for each DBGC_<class name>, and they
381 * must be in the table in the order of DBGC_<class name>..
383 static const char *default_classname_table[] = {
384 "all", /* DBGC_ALL; index refs traditional DEBUGLEVEL */
385 "tdb", /* DBGC_TDB */
386 "printdrivers", /* DBGC_PRINTDRIVERS */
387 "lanman", /* DBGC_LANMAN */
388 "smb", /* DBGC_SMB */
389 "rpc_parse", /* DBGC_RPC_PARSE */
390 "rpc_srv", /* DBGC_RPC_SRV */
391 "rpc_cli", /* DBGC_RPC_CLI */
392 "passdb", /* DBGC_PASSDB */
393 "sam", /* DBGC_SAM */
394 "auth", /* DBGC_AUTH */
395 "winbind", /* DBGC_WINBIND */
396 "vfs", /* DBGC_VFS */
397 "idmap", /* DBGC_IDMAP */
398 "quota", /* DBGC_QUOTA */
399 "acls", /* DBGC_ACLS */
400 "locking", /* DBGC_LOCKING */
401 "msdfs", /* DBGC_MSDFS */
402 "dmapi", /* DBGC_DMAPI */
403 "registry", /* DBGC_REGISTRY */
404 "scavenger", /* DBGC_SCAVENGER */
405 "dns", /* DBGC_DNS */
406 "ldb", /* DBGC_LDB */
410 static char **classname_table = NULL;
413 /* -------------------------------------------------------------------------- **
417 static void debug_init(void);
419 /***************************************************************************
420 Free memory pointed to by global pointers.
421 ****************************************************************************/
423 void gfree_debugsyms(void)
425 TALLOC_FREE(classname_table);
427 if ( DEBUGLEVEL_CLASS != debug_class_list_initial ) {
428 TALLOC_FREE( DEBUGLEVEL_CLASS );
429 DEBUGLEVEL_CLASS = discard_const_p(int, debug_class_list_initial);
432 debug_num_classes = 0;
434 state.initialized = false;
437 /****************************************************************************
438 utility lists registered debug class names's
439 ****************************************************************************/
441 char *debug_list_class_names_and_levels(void)
445 /* prepare strings */
446 for (i = 0; i < debug_num_classes; i++) {
447 buf = talloc_asprintf_append(buf,
451 i == (debug_num_classes - 1) ? "\n" : " ");
459 /****************************************************************************
460 Utility to translate names to debug class index's (internal version).
461 ****************************************************************************/
463 static int debug_lookup_classname_int(const char* classname)
467 if (!classname) return -1;
469 for (i=0; i < debug_num_classes; i++) {
470 if (strcmp(classname, classname_table[i])==0)
476 /****************************************************************************
477 Add a new debug class to the system.
478 ****************************************************************************/
480 int debug_add_class(const char *classname)
484 char **new_name_list;
490 /* check the init has yet been called */
493 ndx = debug_lookup_classname_int(classname);
496 ndx = debug_num_classes;
498 if (DEBUGLEVEL_CLASS == debug_class_list_initial) {
499 /* Initial loading... */
500 new_class_list = NULL;
502 new_class_list = DEBUGLEVEL_CLASS;
505 default_level = DEBUGLEVEL_CLASS[DBGC_ALL];
507 new_class_list = talloc_realloc(NULL, new_class_list, int, ndx + 1);
510 DEBUGLEVEL_CLASS = new_class_list;
512 DEBUGLEVEL_CLASS[ndx] = default_level;
514 new_name_list = talloc_realloc(NULL, classname_table, char *, ndx + 1);
517 classname_table = new_name_list;
519 classname_table[ndx] = talloc_strdup(classname_table, classname);
520 if (! classname_table[ndx])
523 debug_num_classes = ndx + 1;
528 /****************************************************************************
529 Utility to translate names to debug class index's (public version).
530 ****************************************************************************/
532 static int debug_lookup_classname(const char *classname)
536 if (!classname || !*classname)
539 ndx = debug_lookup_classname_int(classname);
544 DEBUG(0, ("debug_lookup_classname(%s): Unknown class\n",
546 return debug_add_class(classname);
549 /****************************************************************************
550 Dump the current registered debug levels.
551 ****************************************************************************/
553 static void debug_dump_status(int level)
557 DEBUG(level, ("INFO: Current debug levels:\n"));
558 for (q = 0; q < debug_num_classes; q++) {
559 const char *classname = classname_table[q];
560 DEBUGADD(level, (" %s: %d\n",
562 DEBUGLEVEL_CLASS[q]));
566 static bool debug_parse_param(char *param)
573 class_name = strtok_r(param, ":", &saveptr);
574 if (class_name == NULL) {
578 class_level = strtok_r(NULL, "\0", &saveptr);
579 if (class_level == NULL) {
583 ndx = debug_lookup_classname(class_name);
588 DEBUGLEVEL_CLASS[ndx] = atoi(class_level);
593 /****************************************************************************
594 Parse the debug levels from smb.conf. Example debug level string:
595 3 tdb:5 printdrivers:7
596 Note: the 1st param has no "name:" preceeding it.
597 ****************************************************************************/
599 bool debug_parse_levels(const char *params_str)
601 size_t str_len = strlen(params_str);
609 memcpy(str, params_str, str_len+1);
611 tok = strtok_r(str, LIST_SEP, &saveptr);
616 /* Allow DBGC_ALL to be specified w/o requiring its class name e.g."10"
617 * v.s. "all:10", this is the traditional way to set DEBUGLEVEL
619 if (isdigit(tok[0])) {
620 DEBUGLEVEL_CLASS[DBGC_ALL] = atoi(tok);
621 tok = strtok_r(NULL, LIST_SEP, &saveptr);
623 DEBUGLEVEL_CLASS[DBGC_ALL] = 0;
626 /* Array is debug_num_classes long */
627 for (i = DBGC_ALL+1; i < debug_num_classes; i++) {
628 DEBUGLEVEL_CLASS[i] = DEBUGLEVEL_CLASS[DBGC_ALL];
631 while (tok != NULL) {
634 ok = debug_parse_param(tok);
636 DEBUG(0,("debug_parse_params: unrecognized debug "
637 "class name or format [%s]\n", tok));
641 tok = strtok_r(NULL, LIST_SEP, &saveptr);
644 debug_dump_status(5);
649 /* setup for logging of talloc warnings */
650 static void talloc_log_fn(const char *msg)
652 DEBUG(0,("%s", msg));
655 void debug_setup_talloc_log(void)
657 talloc_set_log_fn(talloc_log_fn);
661 /****************************************************************************
662 Init debugging (one time stuff)
663 ****************************************************************************/
665 static void debug_init(void)
670 if (state.initialized)
673 state.initialized = true;
675 debug_setup_talloc_log();
677 for(p = default_classname_table; *p; p++) {
681 for (i = 0; i < ARRAY_SIZE(debug_backends); i++) {
682 debug_backends[i].log_level = -1;
683 debug_backends[i].new_log_level = -1;
687 void debug_set_settings(struct debug_settings *settings,
688 const char *logging_param,
689 int syslog_level, bool syslog_only)
694 * This forces in some smb.conf derived values into the debug
695 * system. There are no pointers in this structure, so we can
696 * just structure-assign it in
698 state.settings = *settings;
700 state.settings.syslog = syslog_level;
701 state.settings.syslog_only = syslog_only;
704 * If 'logging' is not set, create backend settings from
705 * deprecated 'syslog' and 'syslog only' paramters
707 if (!logging_param) {
709 snprintf(fake_param, sizeof(fake_param),
710 "syslog:%d", syslog_level - 1);
712 snprintf(fake_param, sizeof(fake_param),
713 "syslog:%d file:%d", syslog_level -1,
717 logging_param = fake_param;
720 debug_set_backends(logging_param);
724 control the name of the logfile and whether logging will be to stdout, stderr
725 or a file, and set up syslog
727 new_log indicates the destination for the debug log (an enum in
728 order of precedence - once set to DEBUG_FILE, it is not possible to
729 reset to DEBUG_STDOUT for example. This makes it easy to override
730 for debug to stderr on the command line, as the smb.conf cannot
731 reset it back to file-based logging
733 void setup_logging(const char *prog_name, enum debug_logtype new_logtype)
736 if (state.logtype < new_logtype) {
737 state.logtype = new_logtype;
740 const char *p = strrchr(prog_name, '/');
746 state.prog_name = prog_name;
748 reopen_logs_internal();
751 /***************************************************************************
752 Set the logfile name.
753 **************************************************************************/
755 void debug_set_logfile(const char *name)
757 if (name == NULL || *name == 0) {
758 /* this copes with calls when smb.conf is not loaded yet */
761 TALLOC_FREE(state.debugf);
762 state.debugf = talloc_strdup(NULL, name);
765 static void debug_close_fd(int fd)
772 bool debug_get_output_is_stderr(void)
774 return (state.logtype == DEBUG_DEFAULT_STDERR) || (state.logtype == DEBUG_STDERR);
777 bool debug_get_output_is_stdout(void)
779 return (state.logtype == DEBUG_DEFAULT_STDOUT) || (state.logtype == DEBUG_STDOUT);
782 void debug_set_callback(void *private_ptr, debug_callback_fn fn)
786 state.logtype = DEBUG_CALLBACK;
787 state.callback_private = private_ptr;
790 state.logtype = DEBUG_DEFAULT_STDERR;
791 state.callback_private = NULL;
792 state.callback = NULL;
796 static void debug_callback_log(const char *msg, int msg_level)
798 size_t msg_len = strlen(msg);
799 char msg_copy[msg_len];
801 if ((msg_len > 0) && (msg[msg_len-1] == '\n')) {
802 memcpy(msg_copy, msg, msg_len-1);
803 msg_copy[msg_len-1] = '\0';
807 state.callback(state.callback_private, msg_level, msg);
810 /**************************************************************************
812 note that we now do this unconditionally
813 We attempt to open the new debug fp before closing the old. This means
814 if we run out of fd's we just keep using the old fd rather than aborting.
815 Fix from dgibson@linuxcare.com.
816 **************************************************************************/
819 reopen the log file (usually called because the log file name might have changed)
821 bool reopen_logs_internal(void)
828 if (state.reopening_logs) {
832 /* Now clear the SIGHUP induced flag */
833 state.schedule_reopen_logs = false;
835 switch (state.logtype) {
839 case DEBUG_DEFAULT_STDOUT:
840 debug_close_fd(state.fd);
844 case DEBUG_DEFAULT_STDERR:
846 debug_close_fd(state.fd);
854 oldumask = umask( 022 );
860 state.reopening_logs = true;
862 new_fd = open( state.debugf, O_WRONLY|O_APPEND|O_CREAT, 0644);
866 DEBUG(0, ("Unable to open new log file '%s': %s\n", state.debugf, strerror(errno)));
867 log_overflow = false;
870 smb_set_close_on_exec(new_fd);
873 debug_close_fd(old_fd);
876 /* Fix from klausr@ITAP.Physik.Uni-Stuttgart.De
877 * to fix problem where smbd's that generate less
878 * than 100 messages keep growing the log.
880 force_check_log_size();
881 (void)umask(oldumask);
883 /* Take over stderr to catch output into logs */
885 if (dup2(state.fd, 2) == -1) {
886 /* Close stderr too, if dup2 can't point it -
887 at the logfile. There really isn't much
888 that can be done on such a fundamental
894 state.reopening_logs = false;
899 /**************************************************************************
900 Force a check of the log size.
901 ***************************************************************************/
903 void force_check_log_size( void )
908 _PUBLIC_ void debug_schedule_reopen_logs(void)
910 state.schedule_reopen_logs = true;
914 /***************************************************************************
915 Check to see if there is any need to check if the logfile has grown too big.
916 **************************************************************************/
918 bool need_to_check_log_size( void )
922 if( debug_count < 100)
925 maxlog = state.settings.max_log_size * 1024;
926 if ( state.fd <=2 || maxlog <= 0 ) {
933 /**************************************************************************
934 Check to see if the log has grown to be too big.
935 **************************************************************************/
937 void check_log_size( void )
943 * We need to be root to check/change log-file, skip this and let the main
944 * loop check do a new check as root.
947 #if _SAMBA_BUILD_ == 3
948 if (geteuid() != sec_initial_uid())
953 /* We don't check sec_initial_uid() here as it isn't
954 * available in common code and we don't generally
955 * want to rotate and the possibly lose logs in
956 * make test or the build farm */
960 if(log_overflow || (!state.schedule_reopen_logs && !need_to_check_log_size())) {
964 maxlog = state.settings.max_log_size * 1024;
966 if (state.schedule_reopen_logs) {
967 (void)reopen_logs_internal();
970 if (maxlog && (fstat(state.fd, &st) == 0
971 && st.st_size > maxlog )) {
972 (void)reopen_logs_internal();
973 if (state.fd > 2 && (fstat(state.fd, &st) == 0
974 && st.st_size > maxlog)) {
975 char name[strlen(state.debugf) + 5];
977 snprintf(name, sizeof(name), "%s.old", state.debugf);
979 (void)rename(state.debugf, name);
981 if (!reopen_logs_internal()) {
982 /* We failed to reopen a log - continue using the old name. */
983 (void)rename(name, state.debugf);
989 * Here's where we need to panic if state.fd == 0 or -1 (invalid values)
993 /* This code should only be reached in very strange
994 * circumstances. If we merely fail to open the new log we
995 * should stick with the old one. ergo this should only be
996 * reached when opening the logs for the first time: at
997 * startup or when the log level is increased from zero.
1000 int fd = open( "/dev/console", O_WRONLY, 0);
1002 smb_set_close_on_exec(fd);
1004 DEBUG(0,("check_log_size: open of debug file %s failed - using console.\n",
1008 * We cannot continue without a debug file handle.
1016 /*************************************************************************
1017 Write an debug message on the debugfile.
1018 This is called by dbghdr() and format_debug_text().
1019 ************************************************************************/
1021 static int Debug1(const char *msg)
1023 int old_errno = errno;
1027 if (state.logtype == DEBUG_CALLBACK) {
1028 debug_callback_log(msg, current_msg_level);
1032 if ( state.logtype != DEBUG_FILE ) {
1034 write(state.fd, msg, strlen(msg));
1039 debug_backends_log(msg, current_msg_level);
1048 /**************************************************************************
1049 Print the buffer content via Debug1(), then reset the buffer.
1052 ****************************************************************************/
1054 static void bufr_print( void )
1056 format_bufr[format_pos] = '\0';
1057 (void)Debug1(format_bufr);
1061 /***************************************************************************
1062 Format the debug message text.
1064 Input: msg - Text to be added to the "current" debug message text.
1068 Notes: The purpose of this is two-fold. First, each call to syslog()
1069 (used by Debug1(), see above) generates a new line of syslog
1070 output. This is fixed by storing the partial lines until the
1071 newline character is encountered. Second, printing the debug
1072 message lines when a newline is encountered allows us to add
1073 spaces, thus indenting the body of the message and making it
1075 **************************************************************************/
1077 static void format_debug_text( const char *msg )
1080 bool timestamp = (state.logtype == DEBUG_FILE && (state.settings.timestamp_logs));
1084 for( i = 0; msg[i]; i++ ) {
1085 /* Indent two spaces at each new line. */
1086 if(timestamp && 0 == format_pos) {
1087 format_bufr[0] = format_bufr[1] = ' ';
1091 /* If there's room, copy the character to the format buffer. */
1092 if (format_pos < FORMAT_BUFR_SIZE - 1)
1093 format_bufr[format_pos++] = msg[i];
1095 /* If a newline is encountered, print & restart. */
1096 if( '\n' == msg[i] )
1099 /* If the buffer is full dump it out, reset it, and put out a line
1100 * continuation indicator.
1102 if (format_pos >= FORMAT_BUFR_SIZE - 1) {
1104 (void)Debug1( " +>\n" );
1108 /* Just to be safe... */
1109 format_bufr[format_pos] = '\0';
1112 /***************************************************************************
1113 Flush debug output, including the format buffer content.
1117 ***************************************************************************/
1119 void dbgflush( void )
1124 /***************************************************************************
1125 Print a Debug Header.
1127 Input: level - Debug level of the message (not the system-wide debug
1129 cls - Debuglevel class of the calling module.
1130 file - Pointer to a string containing the name of the file
1131 from which this function was called, or an empty string
1132 if the __FILE__ macro is not implemented.
1133 func - Pointer to a string containing the name of the function
1134 from which this function was called, or an empty string
1135 if the __FUNCTION__ macro is not implemented.
1136 line - line number of the call to dbghdr, assuming __LINE__
1139 Output: Always true. This makes it easy to fudge a call to dbghdr()
1140 in a macro, since the function can be called as part of a test.
1141 Eg: ( (level <= DEBUGLEVEL) && (dbghdr(level,"",line)) )
1143 Notes: This function takes care of setting current_msg_level.
1145 ****************************************************************************/
1147 bool dbghdrclass(int level, int cls, const char *location, const char *func)
1149 /* Ensure we don't lose any real errno value. */
1150 int old_errno = errno;
1151 bool verbose = false;
1152 char header_str[300];
1155 struct timeval_buf tvbuf;
1158 /* This is a fudge. If there is stuff sitting in the format_bufr, then
1159 * the *right* thing to do is to call
1160 * format_debug_text( "\n" );
1161 * to write the remainder, and then proceed with the new header.
1162 * Unfortunately, there are several places in the code at which
1163 * the DEBUG() macro is used to build partial lines. That in mind,
1164 * we'll work under the assumption that an incomplete line indicates
1165 * that a new header is *not* desired.
1170 /* Set current_msg_level. */
1171 current_msg_level = level;
1173 /* Don't print a header if we're logging to stdout. */
1174 if ( state.logtype != DEBUG_FILE ) {
1178 /* Print the header if timestamps are turned on. If parameters are
1179 * not yet loaded, then default to timestamps on.
1181 if (!(state.settings.timestamp_logs ||
1182 state.settings.debug_prefix_timestamp)) {
1187 timeval_str_buf(&tv, false, state.settings.debug_hires_timestamp,
1190 hs_len = snprintf(header_str, sizeof(header_str), "[%s, %2d",
1192 if (hs_len >= sizeof(header_str)) {
1196 if (unlikely(DEBUGLEVEL_CLASS[ cls ] >= 10)) {
1200 if (verbose || state.settings.debug_pid) {
1202 header_str + hs_len, sizeof(header_str) - hs_len,
1203 ", pid=%u", (unsigned int)getpid());
1204 if (hs_len >= sizeof(header_str)) {
1209 if (verbose || state.settings.debug_uid) {
1211 header_str + hs_len, sizeof(header_str) - hs_len,
1212 ", effective(%u, %u), real(%u, %u)",
1213 (unsigned int)geteuid(), (unsigned int)getegid(),
1214 (unsigned int)getuid(), (unsigned int)getgid());
1215 if (hs_len >= sizeof(header_str)) {
1220 if ((verbose || state.settings.debug_class)
1221 && (cls != DBGC_ALL)) {
1223 header_str + hs_len, sizeof(header_str) - hs_len,
1224 ", class=%s", classname_table[cls]);
1225 if (hs_len >= sizeof(header_str)) {
1231 * No +=, see man man strlcat
1233 hs_len = strlcat(header_str, "] ", sizeof(header_str));
1234 if (hs_len >= sizeof(header_str)) {
1238 if (!state.settings.debug_prefix_timestamp) {
1240 header_str + hs_len, sizeof(header_str) - hs_len,
1241 "%s(%s)\n", location, func);
1242 if (hs_len >= sizeof(header_str)) {
1248 (void)Debug1(header_str);
1254 /***************************************************************************
1255 Add text to the body of the "current" debug message via the format buffer.
1257 Input: format_str - Format string, as used in printf(), et. al.
1258 ... - Variable argument list.
1260 ..or.. va_alist - Old style variable parameter list starting point.
1262 Output: Always true. See dbghdr() for more info, though this is not
1263 likely to be used in the same way.
1265 ***************************************************************************/
1267 static inline bool __dbgtext_va(const char *format_str, va_list ap) PRINTF_ATTRIBUTE(1,0);
1268 static inline bool __dbgtext_va(const char *format_str, va_list ap)
1270 char *msgbuf = NULL;
1274 res = vasprintf(&msgbuf, format_str, ap);
1276 format_debug_text(msgbuf);
1284 bool dbgtext_va(const char *format_str, va_list ap)
1286 return __dbgtext_va(format_str, ap);
1289 bool dbgtext(const char *format_str, ... )
1294 va_start(ap, format_str);
1295 ret = __dbgtext_va(format_str, ap);