c – 每个进程可配置的核心转储目录

概述有没有办法配置为特定进程放置核心转储文件的目录？ 我有一个用C编写的守护进程,我想为其配置核心转储目录.可选地,文件名模式也应该是可配置的. 我知道/ proc / sys / kernel / core_pattern,但这会全局改变模式和目录结构. Apache有指令CoreDumpDirectory – 所以它似乎是可能的. 不,您无法按流程设置它.如果模式包含目录,则核心文件将转储到进程的 有没有办法配置为特定进程放置核心转储文件的目录？

我有一个用C编写的守护进程,我想为其配置核心转储目录.可选地,文件名模式也应该是可配置的.

我知道/ proc / sys / kernel / core_pattern,但这会全局改变模式和目录结构.

Apache有指令CoreDumpDirectory – 所以它似乎是可能的.

解决方法 不,您无法按流程设置它.如果模式包含目录,则核心文件将转储到进程的当前工作目录或/ proc / sys / kernel / core_pattern中设置的目录.

apache中的CoreDumpDirectory是一个Hack,apache为所有导致核心转储的信号注册信号处理程序,并更改其信号处理程序中的当前目录.

/* handle all varIEtIEs of core dumPing signals */static voID sig_coredump(int sig){    apr_filepath_set(ap_coredump_dir,pconf);    apr_signal(sig,SIG_DFL);#if AP_ENABLE_EXCEPTION_HOOK    run_fatal_exception_hook(sig);#endif    /* linuxthreads issue calling getpID() here:     *   This comparison won't match if the crashing thread is     *   some module's thread that runs in the parent process.     *   The fallout,which is limited to linuxthreads:     *   The special log message won't be written when such a     *   thread in the parent causes the parent to crash.     */    if (getpID() == parent_pID) {        ap_log_error(APLOG_MARK,APLOG_NOTICE,ap_server_conf,"seg fault or similar nasty error detected "                     "in the parent process");        /* XXX we can probably add some rudimentary cleanup code here,* like getting rID of the pID file.  If any additional bad stuff         * happens,we are protected from recursive errors taking down the         * system since this function is no longer the signal handler   GLA         */    }    kill(getpID(),sig);    /* At this point we've got sig blocked,because we're still insIDe     * the signal handler.  When we leave the signal handler it will     * be unblocked,and we'll take the signal... and coredump or whatever     * is appropriate for this particular Unix.  In addition the parent     * will see the real signal we received -- whereas if we called     * abort() here,the parent would only see SIGABRT.     */}

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