Mercurial > hg > nginx
view auto/cc/owc @ 4895:508e61393b6c
Event pipe: fixed handling of buf_to_file data.
Input filter might free a buffer if there is no data in it, and in case
of first buffer (used for cache header and request header, aka p->buf_to_file)
this resulted in cache corruption. Buffer memory was reused to read upstream
response before headers were written to disk.
Fix is to avoid moving pointers in ngx_event_pipe_add_free_buf() to a buffer
start if we were asked to free a buffer used by p->buf_to_file.
This fixes occasional cache file corruption, usually resulted
in "cache file ... has md5 collision" alerts.
Reported by Anatoli Marinov.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Tue, 30 Oct 2012 11:14:24 +0000 |
parents | d620f497c50f |
children | 670ceaba03d8 |
line wrap: on
line source
# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. # Open Watcom C 1.0, 1.2, 1.3 # optimizations # maximize speed CFLAGS="$CFLAGS -ot" # reorder instructions for best pipeline usage CFLAGS="$CFLAGS -op" # inline intrinsic functions CFLAGS="$CFLAGS -oi" # inline expansion CFLAGS="$CFLAGS -oe" # disable stack checking calls CFLAGS="$CFLAGS -s" case $CPU in pentium) # optimize for Pentium and Athlon # register-based arguments passing conventions CPU_OPT="-5r" # stack-based arguments passing conventions #CPU_OPT="-5s" ;; pentiumpro) # optimize for Pentium Pro, Pentium II and Pentium III # register-based arguments passing conventions CPU_OPT="-6r" # stack-based arguments passing conventions #CPU_OPT="-6s" ;; esac CFLAGS="$CFLAGS $CPU_OPT" # warnings # maximum level CFLAGS="$CFLAGS -wx" #CFLAGS="$CFLAGS -w3" # stop on warning CFLAGS="$CFLAGS -we" # built target is NT CFLAGS="$CFLAGS -bt=nt" # multithreaded CFLAGS="$CFLAGS -bm" # debug CFLAGS="$CFLAGS -d2" # quiet CFLAGS="$CFLAGS -zq" # Open Watcom C 1.2 have=NGX_HAVE_C99_VARIADIC_MACROS . auto/have # the precompiled headers CORE_DEPS="$CORE_DEPS $NGX_OBJS/ngx_config.pch" NGX_PCH="$NGX_OBJS/ngx_config.pch" NGX_BUILD_PCH="-fhq=$NGX_OBJS/ngx_config.pch" NGX_USE_PCH="-fh=$NGX_OBJS/ngx_config.pch" # the link flags, built target is NT GUI mode application #CORE_LINK="$CORE_LINK -l=nt_win" # the resource file NGX_RCC="wrc \$(CORE_INCS) -fo=$NGX_OBJS/nginx.res " NGX_RCC="$NGX_RCC $NGX_WIN32_RC $NGX_OBJS/nginx.exe" ngx_include_opt="-i=" ngx_objout="-fo" ngx_binout="-fe=" ngx_objext="obj" ngx_binext=".exe" ngx_regex_dirsep='\\' ngx_dirsep="\\" ngx_long_start=' ' ngx_long_end=' ' ngx_long_regex_cont=' \&\ ' ngx_long_cont=' & ' ngx_regex_cont=' \&\ ' ngx_cont=' & ' ngx_tab=' & '