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bird/sysdep/unix/config.Y
Maria Matejka 144ac4c1d3 Logging: fixed size logfiles behaving as mmapped ringbuffers
This variant of logging avoids calling write() for every log line,
allowing for waitless logging. This makes heavy logging less heavy
and more useful for race condition debugging.
2023-09-24 20:43:04 +02:00

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