Mercurial > hg > nginx
view src/core/ngx_inet.h @ 9270:3d455e37abf8
Core: PID file writing synchronization.
Now, ngx_daemon() does not call exit() in the parent process immediately,
but instead waits for the child process to signal it actually started (and
wrote the PID file if configured to). This ensures that the PID file
already exists when the parent process exits.
To make sure that signal handlers won't cause unexpected logging in the
parent process if the child process dies (for example, due to errors when
writing the PID file), ngx_init_signals() is moved to the child process.
This resolves "PID file ... not readable (yet?) after start" and "Failed
to parse PID from file..." errors as observed with systemd.
Note that the errors observed are considered to be a bug in systemd, which
isn't able to work properly with traditional Unix daemons. Still, the
workaround is implemented to make sure there will be no OS vendor patches
trying to address this.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 13 May 2024 06:13:22 +0300 |
parents | d9c3917c7f90 |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_INET_H_INCLUDED_ #define _NGX_INET_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #define NGX_INET_ADDRSTRLEN (sizeof("255.255.255.255") - 1) #define NGX_INET6_ADDRSTRLEN \ (sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255") - 1) #define NGX_UNIX_ADDRSTRLEN \ (sizeof("unix:") - 1 + \ sizeof(struct sockaddr_un) - offsetof(struct sockaddr_un, sun_path)) #if (NGX_HAVE_UNIX_DOMAIN) #define NGX_SOCKADDR_STRLEN NGX_UNIX_ADDRSTRLEN #elif (NGX_HAVE_INET6) #define NGX_SOCKADDR_STRLEN (NGX_INET6_ADDRSTRLEN + sizeof("[]:65535") - 1) #else #define NGX_SOCKADDR_STRLEN (NGX_INET_ADDRSTRLEN + sizeof(":65535") - 1) #endif /* compatibility */ #define NGX_SOCKADDRLEN sizeof(ngx_sockaddr_t) typedef union { struct sockaddr sockaddr; struct sockaddr_in sockaddr_in; #if (NGX_HAVE_INET6) struct sockaddr_in6 sockaddr_in6; #endif #if (NGX_HAVE_UNIX_DOMAIN) struct sockaddr_un sockaddr_un; #endif } ngx_sockaddr_t; typedef struct { in_addr_t addr; in_addr_t mask; } ngx_in_cidr_t; #if (NGX_HAVE_INET6) typedef struct { struct in6_addr addr; struct in6_addr mask; } ngx_in6_cidr_t; #endif typedef struct { ngx_uint_t family; union { ngx_in_cidr_t in; #if (NGX_HAVE_INET6) ngx_in6_cidr_t in6; #endif } u; } ngx_cidr_t; typedef struct { struct sockaddr *sockaddr; socklen_t socklen; ngx_str_t name; } ngx_addr_t; typedef struct { ngx_str_t url; ngx_str_t host; ngx_str_t port_text; ngx_str_t uri; in_port_t port; in_port_t default_port; in_port_t last_port; int family; unsigned listen:1; unsigned uri_part:1; unsigned no_resolve:1; unsigned no_port:1; unsigned wildcard:1; socklen_t socklen; ngx_sockaddr_t sockaddr; ngx_addr_t *addrs; ngx_uint_t naddrs; char *err; } ngx_url_t; in_addr_t ngx_inet_addr(u_char *text, size_t len); #if (NGX_HAVE_INET6) ngx_int_t ngx_inet6_addr(u_char *p, size_t len, u_char *addr); size_t ngx_inet6_ntop(u_char *p, u_char *text, size_t len); #endif size_t ngx_sock_ntop(struct sockaddr *sa, socklen_t socklen, u_char *text, size_t len, ngx_uint_t port); size_t ngx_inet_ntop(int family, void *addr, u_char *text, size_t len); ngx_int_t ngx_ptocidr(ngx_str_t *text, ngx_cidr_t *cidr); ngx_int_t ngx_cidr_match(struct sockaddr *sa, ngx_array_t *cidrs); ngx_int_t ngx_parse_addr(ngx_pool_t *pool, ngx_addr_t *addr, u_char *text, size_t len); ngx_int_t ngx_parse_addr_port(ngx_pool_t *pool, ngx_addr_t *addr, u_char *text, size_t len); ngx_int_t ngx_parse_url(ngx_pool_t *pool, ngx_url_t *u); ngx_int_t ngx_inet_resolve_host(ngx_pool_t *pool, ngx_url_t *u); ngx_int_t ngx_cmp_sockaddr(struct sockaddr *sa1, socklen_t slen1, struct sockaddr *sa2, socklen_t slen2, ngx_uint_t cmp_port); in_port_t ngx_inet_get_port(struct sockaddr *sa); void ngx_inet_set_port(struct sockaddr *sa, in_port_t port); ngx_uint_t ngx_inet_wildcard(struct sockaddr *sa); #endif /* _NGX_INET_H_INCLUDED_ */