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私の C++ apache/cgi の getenv() は私に奇妙なことをもたらします、そして私は /proc/${PID_OF_THE_RUNNING_PROCESS} 内の環境をチェックしました、それらは一致しませんでした。 getenv() でしたか?

shell@kernel # xargs --null --max-args=1 echo < /proc/${PID_OF_THE_RUNNING_PROCESS}/environ 
PATH=/usr/bin:/bin:/usr/sbin:/sbin
LD_LIBRARY_PATH=/usr/local/httpd-2.2.19/lib:

PID_OF_THE_RUNNING_PROCESS のコード

#include<stdio.h>
extern char **environ;

void run()
{
    char* s = *environ;
    printf("declare -x  all env begin\n");    
    for (int i = 1; NULL != s; ++i) {
        printf("declare -x  %s\n", s);
        s = *(environ+i);
    }
    printf("declare -x  all env end\n");
}

PID_OF_THE_RUNNING_PROCESS のコンソール ログ

declare -x  all env begin
declare -x  FCGI_ROLE=RESPONDER
declare -x  UNIQUE_ID=Wvq-Cn8AAAEAAAkmJlsAAAmM
declare -x  HTTP_HOST=www.example.com
declare -x  HTTP_X_CLIENT_PROTO=https
declare -x  HTTP_X_CLIENT_PROTO_VER=HTTP/1.1
declare -x  HTTP_X_REAL_IP=112.96.194.222
declare -x  HTTP_X_FORWARDED_FOR=112.96.194.222
declare -x  CONTENT_LENGTH=177
declare -x  HTTP_CHARSET=utf-8
declare -x  HTTP_ACCEPT_ENCODING=gzip
declare -x  HTTP_REFERER=https://serviceexample.com/exbb58374cdce267a6/91/page-frame.html
declare -x  CONTENT_TYPE=application/x-www-form-urlencoded
declare -x  HTTP_USER_AGENT=Mozilla/5.0 (Linux; Android 5.1; vivo X6Plus D Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/57.0.2987.132 MQQBrowser/6.2 TBS/044030 Mobile Safari/537.36 MicroMessenger/6.6.6.1300(0x26060637) NetType/4G Language/zh_CN MicroMessenger/6.6.6.1300(0x26060637) NetType/4G Language/zh_CN
declare -x  PATH=/usr/bin:/bin:/usr/sbin:/sbin
declare -x  SERVER_SIGNATURE=
declare -x  SERVER_SOFTWARE=Apache/2.2.19 (Unix) mod_ssl/2.2.19 OpenSSL/1.0.1t DAV/2 mod_fcgid/2.3.9
declare -x  SERVER_NAME=www.example.com
declare -x  SERVER_ADDR=10.241.94.209
declare -x  SERVER_PORT=80
declare -x  REMOTE_ADDR=10.56.81.214
declare -x  DOCUMENT_ROOT=/data/doc/www.example.com/htdocs
declare -x  SERVER_ADMIN=webmaster@tencent.com
declare -x  SCRIPT_FILENAME=/data/doc/www.example.com/cgi-bin/ex/common/www_ex_time.cgi
declare -x  REMOTE_PORT=46151
declare -x  GATEWAY_INTERFACE=CGI/1.1
declare -x  SERVER_PROTOCOL=HTTP/1.1
declare -x  REQUEST_METHOD=POST
declare -x  QUERY_STRING=
declare -x  REQUEST_URI=/cgi-bin/ex/common/www_ex_time.cgi
declare -x  SCRIPT_NAME=/cgi-bin/ex/common/www_ex_time.cgi
declare -x  HTTP_CONNECTION=close
declare -x  all env end
declare -x  112.96.194.222
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