annotate src/os/unix/ngx_shared.c @ 58:b55cbf18157e NGINX_0_1_29

nginx 0.1.29 *) 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; bug 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.
author Igor Sysoev <http://sysoev.ru>
date Thu, 12 May 2005 00:00:00 +0400
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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11 #if (NGX_HAVE_MAP_ANON)
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13 void *ngx_create_shared_memory(size_t size, ngx_log_t *log)
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14 {
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15 void *p;
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17 p = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED, -1, 0);
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19 if (p == MAP_FAILED) {
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20 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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21 "mmap(MAP_ANON|MAP_SHARED, %uz) failed", size);
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22 return NULL;
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23 }
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25 return p;
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26 }
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28 #elif (NGX_HAVE_MAP_DEVZERO)
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30 void *ngx_create_shared_memory(size_t size, ngx_log_t *log)
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31 {
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32 void *p;
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33 ngx_fd_t fd;
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35 fd = open("/dev/zero", O_RDWR);
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36
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37 if (fd == -1) {
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38 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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39 "open(\"/dev/zero\") failed");
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40 return NULL;
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41 }
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42
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43 p = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
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44
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45 if (p == MAP_FAILED) {
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46 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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47 "mmap(/dev/zero, MAP_SHARED, %uz) failed", size);
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48 p = NULL;
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49 }
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50
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51 if (close(fd) == -1) {
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52 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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53 "close(\"/dev/zero\") failed");
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54 }
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55
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56 return p;
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57 }
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58
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59 #elif (NGX_HAVE_SYSVSHM)
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60
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61 #include <sys/ipc.h>
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62 #include <sys/shm.h>
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65 void *ngx_create_shared_memory(size_t size, ngx_log_t *log)
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66 {
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67 int id;
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68 void *p;
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69
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70 id = shmget(IPC_PRIVATE, size, (SHM_R|SHM_W|IPC_CREAT));
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72 if (id == -1) {
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73 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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74 "shmget(%uz) failed", size);
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75 return NULL;
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76 }
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78 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "shmget id: %d", id);
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80 p = shmat(id, NULL, 0);
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82 if (p == (void *) -1) {
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83 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "shmat() failed");
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84 p = NULL;
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85 }
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86
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87 if (shmctl(id, IPC_RMID, NULL) == -1) {
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88 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "shmctl(IPC_RMID) failed");
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89 p = NULL;
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90 }
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91
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92 return p;
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93 }
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94
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95 #endif