nginx/src/os/unix/ngx_posix_init.c

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/*
* Copyright (C) Igor Sysoev
*/
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#include <ngx_config.h>
#include <ngx_core.h>
#include <nginx.h>
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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;
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struct rlimit rlmt;
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ngx_os_io_t ngx_os_io = {
ngx_unix_recv,
ngx_readv_chain,
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ngx_udp_unix_recv,
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NULL,
ngx_writev_chain,
0
};
ngx_int_t
ngx_os_init(ngx_log_t *log)
{
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ngx_uint_t n;
#if (NGX_HAVE_OS_SPECIFIC_INIT)
if (ngx_os_specific_init(log) != NGX_OK) {
return NGX_ERROR;
}
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#endif
nginx-0.1.29-RELEASE import *) Feature: the ngx_http_ssi_module supports "include virtual" command. *) Feature: the ngx_http_ssi_module supports the condition command like 'if expr="$NAME"' and "else" and "endif" commands. Only one nested level is supported. *) Feature: the ngx_http_ssi_module supports the DATE_LOCAL and DATE_GMT variables and "config timefmt" command. *) Feature: the "ssi_ignore_recycled_buffers" directive. *) Bugfix: the "echo" command did not show the default value for the empty QUERY_STRING variable. *) Change: the ngx_http_proxy_module was rewritten. *) Feature: the "proxy_redirect", "proxy_pass_request_headers", "proxy_pass_request_body", and "proxy_method" directives. *) Feature: the "proxy_set_header" directive. The "proxy_x_var" was canceled and must be replaced with the proxy_set_header directive. *) Change: the "proxy_preserve_host" is canceled and must be replaced with the "proxy_set_header Host $host" and the "proxy_redirect off" directives, the "proxy_set_header Host $host:$proxy_port" directive and the appropriate proxy_redirect directives. *) Change: the "proxy_set_x_real_ip" is canceled and must be replaced with the "proxy_set_header X-Real-IP $remote_addr" directive. *) Change: the "proxy_add_x_forwarded_for" is canceled and must be replaced with the "proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for" directive. *) Change: the "proxy_set_x_url" is canceled and must be replaced with the "proxy_set_header X-URL http://$host:$server_port$request_uri" directive. *) Feature: the "fastcgi_param" directive. *) Change: the "fastcgi_root", "fastcgi_set_var" and "fastcgi_params" directive are canceled and must be replaced with the fastcgi_param directives. *) Feature: the "index" directive can use the variables. *) Feature: the "index" directive can be used at http and server levels. *) Change: the last index only in the "index" directive can be absolute. *) Feature: the "rewrite" directive can use the variables. *) Feature: the "internal" directive. *) Feature: the CONTENT_LENGTH, CONTENT_TYPE, REMOTE_PORT, SERVER_ADDR, SERVER_PORT, SERVER_PROTOCOL, DOCUMENT_ROOT, SERVER_NAME, REQUEST_METHOD, REQUEST_URI, and REMOTE_USER variables. *) Change: nginx now passes the invalid lines in a client request headers or a backend response header. *) Bugfix: if the backend did not transfer response for a long time and the "send_timeout" was less than "proxy_read_timeout", then nginx returned the 408 response. *) Bugfix: the segmentation fault was occurred if the backend sent an invalid line in response header; the bug had appeared in 0.1.26. *) Bugfix: the segmentation fault may occurred in FastCGI fault tolerance configuration. *) Bugfix: the "expires" directive did not remove the previous "Expires" and "Cache-Control" headers. *) Bugfix: nginx did not take into account trailing dot in "Host" header line. *) Bugfix: the ngx_http_auth_module did not work under Linux. *) Bugfix: the rewrite directive worked incorrectly, if the arguments were in a request. *) Bugfix: nginx could not be built on MacOS X.
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ngx_init_setproctitle(log);
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ngx_pagesize = getpagesize();
ngx_cacheline_size = NGX_CPU_CACHE_LINE;
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n = ngx_pagesize;
for (n = ngx_pagesize; n >>= 1; ngx_pagesize_shift++) { /* void */ }
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if (ngx_ncpu == 0) {
ngx_ncpu = 1;
}
ngx_cpuinfo();
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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;
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#if (NGX_HAVE_INHERITED_NONBLOCK)
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ngx_inherited_nonblocking = 1;
#else
ngx_inherited_nonblocking = 0;
#endif
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srandom(ngx_time());
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return NGX_OK;
}
void
ngx_os_status(ngx_log_t *log)
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{
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",
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rlmt.rlim_cur, rlmt.rlim_max);
}
ngx_int_t
ngx_posix_post_conf_init(ngx_log_t *log)
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{
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;
}