Mercurial > hg > nginx
view src/os/unix/ngx_setproctitle.h @ 7048:80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Resolving an SRV record includes resolving its host names in subrequests.
Previously, if memory allocation failed while reporting a subrequest result
after receiving a response from a DNS server, the SRV resolve handler was
called immediately with the NGX_ERROR state. However, if the SRV record
included another copy of the resolved name, it was reported once again.
This could trigger the use-after-free memory access after SRV resolve
handler freed the resolve context by calling ngx_resolve_name_done().
Now the SRV resolve handler is called only when all its subrequests are
completed.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Tue, 04 Jul 2017 18:07:29 +0300 |
parents | 16013b71feed |
children |
line wrap: on
line source
/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_SETPROCTITLE_H_INCLUDED_ #define _NGX_SETPROCTITLE_H_INCLUDED_ #if (NGX_HAVE_SETPROCTITLE) /* FreeBSD, NetBSD, OpenBSD */ #define ngx_init_setproctitle(log) NGX_OK #define ngx_setproctitle(title) setproctitle("%s", title) #else /* !NGX_HAVE_SETPROCTITLE */ #if !defined NGX_SETPROCTITLE_USES_ENV #if (NGX_SOLARIS) #define NGX_SETPROCTITLE_USES_ENV 1 #define NGX_SETPROCTITLE_PAD ' ' ngx_int_t ngx_init_setproctitle(ngx_log_t *log); void ngx_setproctitle(char *title); #elif (NGX_LINUX) || (NGX_DARWIN) #define NGX_SETPROCTITLE_USES_ENV 1 #define NGX_SETPROCTITLE_PAD '\0' ngx_int_t ngx_init_setproctitle(ngx_log_t *log); void ngx_setproctitle(char *title); #else #define ngx_init_setproctitle(log) NGX_OK #define ngx_setproctitle(title) #endif /* OSes */ #endif /* NGX_SETPROCTITLE_USES_ENV */ #endif /* NGX_HAVE_SETPROCTITLE */ #endif /* _NGX_SETPROCTITLE_H_INCLUDED_ */