nginx 0.3.8 *) 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; bug 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>


char ngx_linux_kern_ostype[50];
char ngx_linux_kern_osrelease[20];

int ngx_linux_rtsig_max;


static ngx_os_io_t ngx_linux_io = {
    ngx_unix_recv,
    ngx_readv_chain,
    ngx_unix_send,
#if (NGX_HAVE_SENDFILE)
    ngx_linux_sendfile_chain,
    NGX_IO_SENDFILE
#else
    ngx_writev_chain,
    0
#endif
};


ngx_int_t
ngx_os_specific_init(ngx_log_t *log)
{
    int        name[2];
    size_t     len;
    ngx_err_t  err;

    name[0] = CTL_KERN;
    name[1] = KERN_OSTYPE;
    len = sizeof(ngx_linux_kern_ostype);

    if (sysctl(name, 2, ngx_linux_kern_ostype, &len, NULL, 0) == -1) {
        ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
                      "sysctl(KERN_OSTYPE) failed");
        return NGX_ERROR;
    }

    /* name[0] = CTL_KERN; */
    name[1] = KERN_OSRELEASE;
    len = sizeof(ngx_linux_kern_osrelease);

    if (sysctl(name, 2, ngx_linux_kern_osrelease, &len, NULL, 0) == -1) {
        ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
                      "sysctl(KERN_OSRELEASE) failed");
        return NGX_ERROR;
    }


    /* name[0] = CTL_KERN; */
    name[1] = KERN_RTSIGMAX;
    len = sizeof(ngx_linux_rtsig_max);

    if (sysctl(name, 2, &ngx_linux_rtsig_max, &len, NULL, 0) == -1) {
        err = ngx_errno;

        if (err != NGX_ENOTDIR) {
            ngx_log_error(NGX_LOG_ALERT, log, err,
                          "sysctl(KERN_RTSIGMAX) failed");

            return NGX_ERROR;
        }

        ngx_linux_rtsig_max = 0;
    }


    ngx_os_io = ngx_linux_io;

    return NGX_OK;
}


void
ngx_os_specific_status(ngx_log_t *log)
{
    ngx_log_error(NGX_LOG_NOTICE, log, 0, "OS: %s %s",
                  ngx_linux_kern_ostype, ngx_linux_kern_osrelease);

    ngx_log_error(NGX_LOG_NOTICE, log, 0, "sysctl(KERN_RTSIGMAX): %d",
                  ngx_linux_rtsig_max);
}