Mercurial > hg > nginx-quic
view src/os/unix/ngx_posix_init.c @ 6272:b6a665bf858a
HTTP/2: fix indirect reprioritization.
Previously, streams that were indirectly reprioritized (either because of
a new exclusive dependency on their parent or because of removal of their
parent from the dependency tree), didn't have their pointer to the parent
node updated.
This broke detection of circular dependencies and, as a result, nginx
worker would crash due to stack overflow whenever such dependency was
introduced.
Found with afl-fuzz.
Signed-off-by: Piotr Sikora <piotrsikora@google.com>
author | Piotr Sikora <piotrsikora@google.com> |
---|---|
date | Thu, 01 Oct 2015 20:25:55 -0700 |
parents | 16013b71feed |
children | cb31017e961b |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #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, ngx_udp_unix_recv, ngx_unix_send, ngx_writev_chain, 0 }; ngx_int_t ngx_os_init(ngx_log_t *log) { ngx_uint_t n; #if (NGX_HAVE_OS_SPECIFIC_INIT) if (ngx_os_specific_init(log) != NGX_OK) { return NGX_ERROR; } #endif if (ngx_init_setproctitle(log) != NGX_OK) { return NGX_ERROR; } ngx_pagesize = getpagesize(); ngx_cacheline_size = NGX_CPU_CACHE_LINE; for (n = ngx_pagesize; n >>= 1; ngx_pagesize_shift++) { /* void */ } #if (NGX_HAVE_SC_NPROCESSORS_ONLN) if (ngx_ncpu == 0) { ngx_ncpu = sysconf(_SC_NPROCESSORS_ONLN); } #endif if (ngx_ncpu < 1) { ngx_ncpu = 1; } ngx_cpuinfo(); 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_HAVE_ACCEPT4) ngx_inherited_nonblocking = 1; #else ngx_inherited_nonblocking = 0; #endif srandom(ngx_time()); return NGX_OK; } void ngx_os_status(ngx_log_t *log) { ngx_log_error(NGX_LOG_NOTICE, log, 0, NGINX_VER_BUILD); #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); } #if 0 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; } #endif