nginx-0.3.8-RELEASE import *) Security: nginx now checks URI got from a backend in "X-Accel-Redirect" header line or in SSI file for the "/../" paths and zeroes. *) Change: nginx now does not treat the empty user name in the "Authorization" header line as valid one. *) Feature: the "ssl_session_timeout" directives of the ngx_http_ssl_module and ngx_imap_ssl_module. *) Feature: the "auth_http_header" directive of the ngx_imap_auth_http_module. *) Feature: the "add_header" directive. *) Feature: the ngx_http_realip_module. *) Feature: the new variables to use in the "log_format" directive: $bytes_sent, $apache_bytes_sent, $status, $time_gmt, $uri, $request_time, $request_length, $upstream_status, $upstream_response_time, $gzip_ratio, $uid_got, $uid_set, $connection, $pipe, and $msec. The parameters in the "%name" form will be canceled soon. *) Change: now the false variable values in the "if" directive are the empty string "" and string starting with "0". *) Bugfix: while using proxied or FastCGI-server nginx may leave connections and temporary files with client requests in open state. *) Bugfix: the worker processes did not flush the buffered logs on graceful exit. *) Bugfix: if the request URI was changes by the "rewrite" directive and the request was proxied in location given by regular expression, then the incorrect request was transferred to backend; the bug had appeared in 0.2.6. *) Bugfix: the "expires" directive did not remove the previous "Expires" header. *) Bugfix: nginx may stop to accept requests if the "rtsig" method and several worker processes were used. *) Bugfix: the "\"" and "\'" escape symbols were incorrectly handled in SSI commands. *) Bugfix: if the response was ended just after the SSI command and gzipping was used, then the response did not transferred complete or did not transferred at all.

/*
 * Copyright (C) Igor Sysoev
 */


#include <ngx_config.h>
#include <ngx_core.h>
#include <nginx.h>


ngx_int_t   ngx_ncpu;
ngx_int_t   ngx_max_sockets;
ngx_uint_t  ngx_inherited_nonblocking;
ngx_uint_t  ngx_tcp_nodelay_and_tcp_nopush;


struct rlimit  rlmt;


ngx_os_io_t ngx_os_io = {
    ngx_unix_recv,
    ngx_readv_chain,
    NULL,
    ngx_writev_chain,
    0
};


ngx_int_t
ngx_os_init(ngx_log_t *log)
{
#if (NGX_HAVE_OS_SPECIFIC_INIT)
    if (ngx_os_specific_init(log) != NGX_OK) {
        return NGX_ERROR;
    }
#endif

    ngx_init_setproctitle(log);

    ngx_pagesize = getpagesize();

    if (ngx_ncpu == 0) {
        ngx_ncpu = 1;
    }

    if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
        ngx_log_error(NGX_LOG_ALERT, log, errno,
                      "getrlimit(RLIMIT_NOFILE) failed)");
        return NGX_ERROR;
    }
    
    ngx_max_sockets = (ngx_int_t) rlmt.rlim_cur;

#if (NGX_HAVE_INHERITED_NONBLOCK)
    ngx_inherited_nonblocking = 1;
#else
    ngx_inherited_nonblocking = 0;
#endif

    return NGX_OK;
}


void
ngx_os_status(ngx_log_t *log)
{
    ngx_log_error(NGX_LOG_NOTICE, log, 0, NGINX_VER);

#ifdef NGX_COMPILER
    ngx_log_error(NGX_LOG_NOTICE, log, 0, "built by " NGX_COMPILER);
#endif

#if (NGX_HAVE_OS_SPECIFIC_INIT)
    ngx_os_specific_status(log);
#endif

    ngx_log_error(NGX_LOG_NOTICE, log, 0,
                  "getrlimit(RLIMIT_NOFILE): %r:%r",
                  rlmt.rlim_cur, rlmt.rlim_max);
}


ngx_int_t
ngx_posix_post_conf_init(ngx_log_t *log)
{
    ngx_fd_t  pp[2];

    if (pipe(pp) == -1) {
        ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "pipe() failed");
        return NGX_ERROR;
    }

    if (dup2(pp[1], STDERR_FILENO) == -1) {
        ngx_log_error(NGX_LOG_EMERG, log, errno, "dup2(STDERR) failed");
        return NGX_ERROR;
    }

    if (pp[1] > STDERR_FILENO) {
        if (close(pp[1]) == -1) {
            ngx_log_error(NGX_LOG_EMERG, log, errno, "close() failed");
            return NGX_ERROR;
        }
    }

    return NGX_OK;
}