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small fixes atop syslog config patch

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2011-04-16 20:15:14 +02:00
parent 89b3cbaa97
commit 0288b27ad8
4 changed files with 39 additions and 9 deletions
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28
docs/syslog.conf.txt Normal file
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@ -0,0 +1,28 @@
If syslogd applet compiled with FEATURE_SYSLOGD_CFG=y, then it supports restricted syslog.conf.
The config resembles rsyslog.conf in RULES part:
LINE = DELIM [RULE | COMMENT]
COMMENT = #.*
DELIM = SPACE TAB
RULE = SELECTOR [;SELECTOR]* DELIM* ACTION DELIM*
SELECTOR = FACILITY [,FACILITY]* .[[!]=] PRIORITY
FACILITY = * | kern | user ... (see syslog.h)
PRIORITY = * | emerg | alert ... (see syslog.h)
ACTION = FILE
"mark" facility is NOT supported.
"none" priority is supported.
In FACILITY and PRIORITY "*" stands for "any".
FILE is a regular file or tty device.
Here is an example:
#syslog.conf
kern,user.* /var/log/messages #all messages of kern and user facilities
kern.!err /var/log/critical #all messages of kern facility with priorities lower than err (warn, notice ...)
*.*;auth,authpriv.none /var/log/noauth #all messages except ones with auth and authpriv facilities
kern,user.*;kern.!=notice;*.err;syslog.none /var/log/OMG #some whicked rule just as an example =)
*.* /dev/null #this prevents from logging to default log file (-O FILE or /var/log/messages)
Even in the case of match with some rule another rules will be tried too.
If there was no match with any of the rules, logging to default log file or shared memory will be performed.

6
libbb/get_line_from_file.c
View File

@ -44,8 +44,12 @@ char* FAST_FUNC bb_get_chunk_with_continuation(FILE *file, int *end, int *lineno
idx -= 2;
}
}
if (end)
if (end) {
*end = idx;
/* handle corner case when the file is not ended with '\n' */
if (ch == EOF && lineno != NULL)
(*lineno)++;
}
if (linebuf) {
// huh, does fgets discard prior data on error like this?
// I don't think so....

2
sysklogd/Config.src
View File

@ -57,7 +57,7 @@ config FEATURE_SYSLOGD_CFG
default y
depends on SYSLOGD
help
Supports restricted syslogd config.
Supports restricted syslogd config. See docs/syslog.conf.txt
config FEATURE_SYSLOGD_READ_BUFFER_SIZE
int "Read buffer size in bytes"

12
sysklogd/syslogd.c
View File

@ -33,6 +33,8 @@
//usage: "\n -D Drop duplicates")
//usage: IF_FEATURE_IPC_SYSLOG(
//usage: "\n -C[size(KiB)] Log to shared mem buffer (read it using logread)")
//usage: IF_FEATURE_SYSLOGD_CFG(
//usage: "\n -f FILE Use FILE as config (default is /etc/syslog.conf)")
/* NB: -Csize shouldn't have space (because size is optional) */
/* //usage: "\n -m MIN Minutes between MARK lines (default:20, 0=off)" */
//usage:
@ -284,10 +286,8 @@ static void parse_syslogdcfg(const char *file)
logRule_t *cur_rule;
/* unexpected trailing token? */
if (tok[2]) {
t = tok[2];
if (tok[2])
goto cfgerr;
}
cur_rule = *pp_rule = xzalloc(sizeof(*cur_rule));
@ -307,10 +307,8 @@ static void parse_syslogdcfg(const char *file)
*next_selector++ = '\0';
t = strchr(cur_selector, '.');
if (!t) {
t = cur_selector;
if (!t)
goto cfgerr;
}
*t++ = '\0'; /* separate facility from priority */
negated_prio = 0;
@ -414,7 +412,7 @@ static void parse_syslogdcfg(const char *file)
return;
cfgerr:
bb_error_msg_and_die("bad line %d: wrong token '%s'", parser->lineno, t);
bb_error_msg_and_die("error in '%s' at line %d", file, parser->lineno);
}
#endif