view auto/types/sizeof @ 9021:f5515e727656

Fixed "zero size buf" alerts with subrequests. Since 4611:2b6cb7528409 responses from the gzip static, flv, and mp4 modules can be used with subrequests, though empty files were not properly handled. Empty gzipped, flv, and mp4 files thus resulted in "zero size buf in output" alerts. While valid corresponding files are not expected to be empty, such files shouldn't result in alerts. Fix is to set b->sync on such empty subrequest responses, similarly to what ngx_http_send_special() does. Additionally, the static module, the ngx_http_send_response() function, and file cache are modified to do the same instead of not sending the response body at all in such cases, since not sending the response body at all is believed to be at least questionable, and might break various filters which do not expect such behaviour.
author Maxim Dounin <mdounin@mdounin.ru>
date Sat, 28 Jan 2023 05:23:33 +0300
parents e3faa5fb7772
children
line wrap: on
line source


# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


echo $ngx_n "checking for $ngx_type size ...$ngx_c"

cat << END >> $NGX_AUTOCONF_ERR

----------------------------------------
checking for $ngx_type size

END

ngx_size=

cat << END > $NGX_AUTOTEST.c

#include <sys/types.h>
#include <sys/time.h>
$NGX_INCLUDE_UNISTD_H
#include <signal.h>
#include <stdio.h>
#include <sys/resource.h>
$NGX_INCLUDE_INTTYPES_H
$NGX_INCLUDE_AUTO_CONFIG_H

int main(void) {
    printf("%d", (int) sizeof($ngx_type));
    return 0;
}

END


ngx_test="$CC $CC_TEST_FLAGS $CC_AUX_FLAGS \
          -o $NGX_AUTOTEST $NGX_AUTOTEST.c $NGX_LD_OPT $ngx_feature_libs"

eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1"


if [ -x $NGX_AUTOTEST ]; then
    ngx_size=`$NGX_AUTOTEST`
    echo " $ngx_size bytes"
fi


case $ngx_size in
    4)
        ngx_max_value=2147483647
        ngx_max_len='(sizeof("-2147483648") - 1)'
    ;;

    8)
        ngx_max_value=9223372036854775807LL
        ngx_max_len='(sizeof("-9223372036854775808") - 1)'
    ;;

    *)
        echo
        echo "$0: error: can not detect $ngx_type size"

        echo "----------"    >> $NGX_AUTOCONF_ERR
        cat $NGX_AUTOTEST.c  >> $NGX_AUTOCONF_ERR
        echo "----------"    >> $NGX_AUTOCONF_ERR
        echo $ngx_test       >> $NGX_AUTOCONF_ERR
        echo "----------"    >> $NGX_AUTOCONF_ERR

        rm -rf $NGX_AUTOTEST*

        exit 1
esac


rm -rf $NGX_AUTOTEST*