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427177edb7
The original logging routines were locking a common mutex. This led to massive underperformance and unwanted serialization when heavily logging due to lock contention. Now the logging is lockless, though still serializing on write() syscalls to the same filedescriptor. This change also brings in a persistent logging channel structures and thus avoids writing into active configuration data structures during regular run.
172 lines
4.2 KiB
Plaintext
172 lines
4.2 KiB
Plaintext
/*
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* BIRD -- UNIX Configuration
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*
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* (c) 1999--2000 Martin Mares <mj@ucw.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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CF_HDR
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#include "sysdep/unix/unix.h"
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#include <stdio.h>
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CF_DEFINES
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static struct log_config *this_log;
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CF_DECLS
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CF_KEYWORDS(LOG, SYSLOG, ALL, DEBUG, TRACE, INFO, REMOTE, WARNING, ERROR, AUTH, FATAL, BUG, STDERR, SOFT)
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CF_KEYWORDS(NAME, CONFIRM, UNDO, CHECK, TIMEOUT, DEBUG, LATENCY, LIMIT, WATCHDOG, WARNING, STATUS)
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CF_KEYWORDS(GRACEFUL, RESTART)
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%type <i> log_mask log_mask_list log_cat cfg_timeout
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%type <t> cfg_name
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%type <tf> timeformat_which
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%type <t> syslog_name
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CF_GRAMMAR
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conf: log_config ;
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log_begin: { this_log = cfg_allocz(sizeof(struct log_config)); };
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log_config: LOG log_begin log_file log_mask ';' {
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this_log->mask = $4;
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add_tail(&new_config->logfiles, &this_log->n);
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}
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;
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syslog_name:
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NAME text { $$ = $2; }
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| { $$ = bird_name; }
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;
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log_limit:
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/* empty */
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| expr text { this_log->limit = $1; this_log->backup = $2; }
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;
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log_file:
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text log_limit {
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if (!parse_and_exit)
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{
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this_log->rf = rf_open(new_config->pool, $1, RF_APPEND);
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if (!this_log->rf) cf_error("Unable to open log file '%s': %m", $1);
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}
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this_log->filename = $1;
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}
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| SYSLOG syslog_name { this_log->rf = NULL; new_config->syslog_name = $2; }
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| STDERR { this_log->rf = &rf_stderr; }
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;
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log_mask:
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ALL { $$ = ~0; }
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| '{' log_mask_list '}' { $$ = $2; }
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;
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log_mask_list:
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log_cat { $$ = 1 << $1; }
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| log_mask_list ',' log_cat { $$ = $1 | (1 << $3); }
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;
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log_cat:
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DEBUG { $$ = L_DEBUG[0]; }
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| TRACE { $$ = L_TRACE[0]; }
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| INFO { $$ = L_INFO[0]; }
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| REMOTE { $$ = L_REMOTE[0]; }
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| WARNING { $$ = L_WARN[0]; }
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| ERROR { $$ = L_ERR[0]; }
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| AUTH { $$ = L_AUTH[0]; }
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| FATAL { $$ = L_FATAL[0]; }
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| BUG { $$ = L_BUG[0]; }
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;
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conf: mrtdump_base ;
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mrtdump_base:
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MRTDUMP PROTOCOLS mrtdump_mask ';' { new_config->proto_default_mrtdump = $3; }
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| MRTDUMP text ';' {
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if (!parse_and_exit)
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{
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struct rfile *f = rf_open(new_config->pool, $2, RF_APPEND);
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if (!f) cf_error("Unable to open MRTDump file '%s': %m", $2);
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new_config->mrtdump_file = f;
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}
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}
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;
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conf: THREADS expr {
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if ($2 < 1) cf_error("Number of threads must be at least one.");
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new_config->thread_count = $2;
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}
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conf: debug_unix ;
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debug_unix:
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DEBUG LATENCY bool { new_config->latency_debug = $3; }
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| DEBUG LATENCY LIMIT expr_us { new_config->latency_limit = $4; }
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| WATCHDOG WARNING expr_us { new_config->watchdog_warning = $3; }
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| WATCHDOG TIMEOUT expr_us { new_config->watchdog_timeout = ($3 + 999999) TO_S; }
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;
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/* Unix specific commands */
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CF_CLI_HELP(CONFIGURE, ..., [[Reload configuration]])
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CF_CLI(CONFIGURE, cfg_name cfg_timeout, [\"<file>\"] [timeout [<sec>]], [[Reload configuration]])
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{ cmd_reconfig($2, RECONFIG_HARD, $3); } ;
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CF_CLI(CONFIGURE SOFT, cfg_name cfg_timeout, [\"<file>\"] [timeout [<sec>]], [[Reload configuration and ignore changes in filters]])
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{ cmd_reconfig($3, RECONFIG_SOFT, $4); } ;
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/* Hack to get input completion for 'timeout' */
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CF_CLI_CMD(CONFIGURE TIMEOUT, [<sec>], [[Reload configuration with undo timeout]])
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CF_CLI_CMD(CONFIGURE SOFT TIMEOUT, [<sec>], [[Reload configuration with undo timeout]])
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CF_CLI(CONFIGURE CONFIRM,,, [[Confirm last configuration change - deactivate undo timeout]])
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{ cmd_reconfig_confirm(); } ;
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CF_CLI(CONFIGURE UNDO,,, [[Undo last configuration change]])
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{ cmd_reconfig_undo(); } ;
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CF_CLI(CONFIGURE STATUS,,, [[Show configuration status]])
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{ cmd_reconfig_status(); } ;
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CF_CLI(CONFIGURE CHECK, cfg_name, [\"<file>\"], [[Parse configuration and check its validity]])
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{ cmd_check_config($3); } ;
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CF_CLI(DOWN,,, [[Shut the daemon down]])
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{ cmd_shutdown(); } ;
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CF_CLI_HELP(GRACEFUL, restart, [[Shut the daemon down for graceful restart]])
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CF_CLI(GRACEFUL RESTART,,, [[Shut the daemon down for graceful restart]])
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{ cmd_graceful_restart(); } ;
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CF_CLI(SHOW THREADS,,, [[Write out thread information]])
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{ cmd_show_threads(0); } ;
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CF_CLI(SHOW THREADS ALL,,, [[Write out thread and IO loop information]])
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{ cmd_show_threads(1); } ;
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cfg_name:
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/* empty */ { $$ = NULL; }
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| TEXT
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;
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cfg_timeout:
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/* empty */ { $$ = 0; }
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| TIMEOUT { $$ = UNIX_DEFAULT_CONFIGURE_TIMEOUT; }
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| TIMEOUT expr { $$ = $2; }
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;
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CF_CODE
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CF_END
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