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Posted to cvs@httpd.apache.org by co...@apache.org on 2023/01/06 23:46:35 UTC
svn commit: r1906433 - in /httpd/httpd/trunk: changes-entries/rotatlogs_truncate_rotated.txt docs/manual/programs/rotatelogs.xml support/rotatelogs.c
Author: covener
Date: Fri Jan 6 23:46:35 2023
New Revision: 1906433
URL: http://svn.apache.org/viewvc?rev=1906433&view=rev
Log:
add -T flag to truncate rotated logs only
for strftime formats that will loop back on themselves, like
day of month or weekday name.
Added:
httpd/httpd/trunk/changes-entries/rotatlogs_truncate_rotated.txt
Modified:
httpd/httpd/trunk/docs/manual/programs/rotatelogs.xml
httpd/httpd/trunk/support/rotatelogs.c
Added: httpd/httpd/trunk/changes-entries/rotatlogs_truncate_rotated.txt
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/changes-entries/rotatlogs_truncate_rotated.txt?rev=1906433&view=auto
==============================================================================
--- httpd/httpd/trunk/changes-entries/rotatlogs_truncate_rotated.txt (added)
+++ httpd/httpd/trunk/changes-entries/rotatlogs_truncate_rotated.txt Fri Jan 6 23:46:35 2023
@@ -0,0 +1,2 @@
+ *) rotatelogs: Add -T flag to allow subsequent rotated logfiles to be
+ truncated without the initial logfile being truncated. [Eric Covener]
Modified: httpd/httpd/trunk/docs/manual/programs/rotatelogs.xml
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/docs/manual/programs/rotatelogs.xml?rev=1906433&r1=1906432&r2=1906433&view=diff
==============================================================================
--- httpd/httpd/trunk/docs/manual/programs/rotatelogs.xml (original)
+++ httpd/httpd/trunk/docs/manual/programs/rotatelogs.xml Fri Jan 6 23:46:35 2023
@@ -111,6 +111,13 @@ the filename, however format strings con
will be respected.
</dd>
+<dt><code>-T</code></dt>
+<dd>Causes all but the initial logfile to be truncated when opened.
+This is useful when the format string contains something that will
+loop around, such as the day of the month.
+</dd>
+
+
<dt><code>-v</code></dt>
<dd>Produce verbose output on STDERR. The output contains
the result of the configuration parsing, and all file open and
@@ -263,6 +270,18 @@ an offset.</dd>
in this scenario that a separate process (such as tail) would
process the file in real time.</p>
+<example>
+<highlight language="config">
+ CustomLog "|bin/rotatelogs -T /var/log/logfile.%d 86400" common
+</highlight>
+</example>
+
+<p>If the server is started (or restarted) on the first of the month, this
+appends to <code>/var/log/logfile.01</code>. When a log entry is written on the
+second of the month, <code>/var/log/logfile.02</code> is truncated and new entries
+will be added to the top. This example keeps approximately 1 months worth of
+logs without external maintenance.</p>
+
</section>
<section id="portability"><title>Portability</title>
Modified: httpd/httpd/trunk/support/rotatelogs.c
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/support/rotatelogs.c?rev=1906433&r1=1906432&r2=1906433&view=diff
==============================================================================
--- httpd/httpd/trunk/support/rotatelogs.c (original)
+++ httpd/httpd/trunk/support/rotatelogs.c Fri Jan 6 23:46:35 2023
@@ -65,6 +65,7 @@ struct rotate_config {
int echo;
char *szLogRoot;
int truncate;
+ int truncate_rotated_only;
const char *linkfile;
const char *postrotate_prog;
#if APR_FILES_AS_SOCKETS
@@ -109,9 +110,9 @@ static void usage(const char *argv0, con
}
fprintf(stderr,
#if APR_FILES_AS_SOCKETS
- "Usage: %s [-v] [-l] [-L linkname] [-p prog] [-f] [-D] [-t] [-e] [-c] [-n number] <logfile> "
+ "Usage: %s [-vlfDtTec] [-L linkname] [-p prog] [-n number] <logfile> "
#else
- "Usage: %s [-v] [-l] [-L linkname] [-p prog] [-f] [-D] [-t] [-e] [-n number] <logfile> "
+ "Usage: %s [-vlfDtTe] [-L linkname] [-p prog] [-n number] <logfile> "
#endif
"{<rotation time in seconds>|<rotation size>(B|K|M|G)} "
"[offset minutes from UTC]\n\n",
@@ -145,6 +146,7 @@ static void usage(const char *argv0, con
" -f Force opening of log on program start.\n"
" -D Create parent directories of log file.\n"
" -t Truncate logfile instead of rotating, tail friendly.\n"
+ " -T Truncate logfiles opened for rotation, but not the initial logfile.\n"
" -e Echo log to stdout for further processing.\n"
#if APR_FILES_AS_SOCKETS
" -c Create log even if it is empty.\n"
@@ -379,6 +381,7 @@ static void doRotate(rotate_config_t *co
struct logfile newlog;
int thisLogNum = -1;
int oldreason = status->rotateReason;
+ int truncate = config->truncate;
/* Retrieve local-time-adjusted-Unix-time. */
now = get_now(config, &offset);
@@ -458,8 +461,17 @@ static void doRotate(rotate_config_t *co
if (config->verbose) {
fprintf(stderr, "Opening file %s\n", newlog.name);
}
- rv = apr_file_open(&newlog.fd, newlog.name, APR_WRITE | APR_CREATE | APR_APPEND
- | (config->truncate || (config->num_files > 0 && status->current.fd) ? APR_TRUNCATE : 0),
+
+ if (!truncate) {
+ /* -n and -T truncate subsequent files only. */
+ if (status->current.fd &&
+ (config->num_files > 0 || config->truncate_rotated_only)) {
+ truncate = 1;
+ }
+ }
+ rv = apr_file_open(&newlog.fd, newlog.name,
+ APR_WRITE | APR_CREATE | APR_APPEND
+ | (truncate ? APR_TRUNCATE : 0),
APR_OS_DEFAULT, newlog.pool);
if (rv == APR_SUCCESS) {
/* Handle post-rotate processing. */
@@ -597,9 +609,9 @@ int main (int argc, const char * const a
apr_pool_create(&status.pool, NULL);
apr_getopt_init(&opt, status.pool, argc, argv);
#if APR_FILES_AS_SOCKETS
- while ((rv = apr_getopt(opt, "lL:p:fDtvecn:", &c, &opt_arg)) == APR_SUCCESS) {
+ while ((rv = apr_getopt(opt, "lL:p:fDtTvecn:", &c, &opt_arg)) == APR_SUCCESS) {
#else
- while ((rv = apr_getopt(opt, "lL:p:fDtven:", &c, &opt_arg)) == APR_SUCCESS) {
+ while ((rv = apr_getopt(opt, "lL:p:fDtTven:", &c, &opt_arg)) == APR_SUCCESS) {
#endif
switch (c) {
case 'l':
@@ -624,6 +636,9 @@ int main (int argc, const char * const a
case 't':
config.truncate = 1;
break;
+ case 'T':
+ config.truncate_rotated_only = 1;
+ break;
case 'v':
config.verbose = 1;
break;