186 lines
5.5 KiB
C
186 lines
5.5 KiB
C
diff --git a/auto/unix b/auto/unix
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index 10835f6c..b5b33bb3 100644
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--- a/auto/unix
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+++ b/auto/unix
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@@ -990,3 +990,27 @@ ngx_feature_test='struct addrinfo *res;
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if (getaddrinfo("localhost", NULL, NULL, &res) != 0) return 1;
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freeaddrinfo(res)'
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. auto/feature
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+
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+ngx_feature="SOCK_CLOEXEC support"
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+ngx_feature_name="NGX_HAVE_SOCKET_CLOEXEC"
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+ngx_feature_run=no
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+ngx_feature_incs="#include <sys/types.h>
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+ #include <sys/socket.h>"
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+ngx_feature_path=
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+ngx_feature_libs=
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+ngx_feature_test="int fd;
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+ fd = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);"
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+. auto/feature
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+
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+ngx_feature="FD_CLOEXEC support"
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+ngx_feature_name="NGX_HAVE_FD_CLOEXEC"
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+ngx_feature_run=no
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+ngx_feature_incs="#include <sys/types.h>
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+ #include <sys/socket.h>
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+ #include <fcntl.h>"
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+ngx_feature_path=
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+ngx_feature_libs=
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+ngx_feature_test="int fd;
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+ fd = socket(AF_INET, SOCK_STREAM, 0);
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+ fcntl(fd, F_SETFD, FD_CLOEXEC);"
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+. auto/feature
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diff --git a/src/core/ngx_resolver.c b/src/core/ngx_resolver.c
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index cd55520c..438e0806 100644
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--- a/src/core/ngx_resolver.c
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+++ b/src/core/ngx_resolver.c
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@@ -4466,8 +4466,14 @@ ngx_tcp_connect(ngx_resolver_connection_t *rec)
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ngx_event_t *rev, *wev;
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ngx_connection_t *c;
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+#if (NGX_HAVE_SOCKET_CLOEXEC)
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+ s = ngx_socket(rec->sockaddr->sa_family, SOCK_STREAM | SOCK_CLOEXEC, 0);
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+
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+#else
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s = ngx_socket(rec->sockaddr->sa_family, SOCK_STREAM, 0);
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+#endif
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+
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ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &rec->log, 0, "TCP socket %d", s);
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if (s == (ngx_socket_t) -1) {
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@@ -4494,6 +4500,15 @@ ngx_tcp_connect(ngx_resolver_connection_t *rec)
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goto failed;
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}
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+#if (NGX_HAVE_FD_CLOEXEC)
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+ if (ngx_cloexec(s) == -1) {
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+ ngx_log_error(NGX_LOG_ALERT, &rec->log, ngx_socket_errno,
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+ ngx_cloexec_n " failed");
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+
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+ goto failed;
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+ }
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+#endif
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+
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rev = c->read;
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wev = c->write;
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diff --git a/src/event/ngx_event.h b/src/event/ngx_event.h
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index 19fec68..8c2f01a 100644
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--- a/src/event/ngx_event.h
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+++ b/src/event/ngx_event.h
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@@ -73,6 +73,9 @@ struct ngx_event_s {
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/* to test on worker exit */
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unsigned channel:1;
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unsigned resolver:1;
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+#if (HAVE_SOCKET_CLOEXEC_PATCH)
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+ unsigned skip_socket_leak_check:1;
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+#endif
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unsigned cancelable:1;
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diff --git a/src/event/ngx_event_accept.c b/src/event/ngx_event_accept.c
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index 77563709..5827b9d0 100644
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--- a/src/event/ngx_event_accept.c
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+++ b/src/event/ngx_event_accept.c
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@@ -62,7 +62,9 @@ ngx_event_accept(ngx_event_t *ev)
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#if (NGX_HAVE_ACCEPT4)
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if (use_accept4) {
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- s = accept4(lc->fd, &sa.sockaddr, &socklen, SOCK_NONBLOCK);
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+ s = accept4(lc->fd, &sa.sockaddr, &socklen,
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+ SOCK_NONBLOCK | SOCK_CLOEXEC);
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+
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} else {
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s = accept(lc->fd, &sa.sockaddr, &socklen);
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}
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@@ -202,6 +204,16 @@ ngx_event_accept(ngx_event_t *ev)
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ngx_close_accepted_connection(c);
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return;
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}
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+
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+#if (NGX_HAVE_FD_CLOEXEC)
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+ if (ngx_cloexec(s) == -1) {
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+ ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_socket_errno,
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+ ngx_cloexec_n " failed");
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+ ngx_close_accepted_connection(c);
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+ return;
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+ }
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+#endif
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+
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}
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}
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diff --git a/src/event/ngx_event_connect.c b/src/event/ngx_event_connect.c
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index c5bb8068..cf33b1d2 100644
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--- a/src/event/ngx_event_connect.c
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+++ b/src/event/ngx_event_connect.c
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@@ -38,8 +38,15 @@ ngx_event_connect_peer(ngx_peer_connection_t *pc)
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type = (pc->type ? pc->type : SOCK_STREAM);
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+#if (NGX_HAVE_SOCKET_CLOEXEC)
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+ s = ngx_socket(pc->sockaddr->sa_family, type | SOCK_CLOEXEC, 0);
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+
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+#else
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s = ngx_socket(pc->sockaddr->sa_family, type, 0);
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+#endif
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+
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+
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ngx_log_debug2(NGX_LOG_DEBUG_EVENT, pc->log, 0, "%s socket %d",
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(type == SOCK_STREAM) ? "stream" : "dgram", s);
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@@ -80,6 +87,15 @@ ngx_event_connect_peer(ngx_peer_connection_t *pc)
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goto failed;
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}
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+#if (NGX_HAVE_FD_CLOEXEC)
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+ if (ngx_cloexec(s) == -1) {
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+ ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
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+ ngx_cloexec_n " failed");
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+
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+ goto failed;
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+ }
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+#endif
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+
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if (pc->local) {
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#if (NGX_HAVE_TRANSPARENT_PROXY)
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diff --git a/src/os/unix/ngx_process_cycle.c b/src/os/unix/ngx_process_cycle.c
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index c4376a5..48e8fa8 100644
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--- a/src/os/unix/ngx_process_cycle.c
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+++ b/src/os/unix/ngx_process_cycle.c
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@@ -1032,6 +1032,9 @@ ngx_worker_process_exit(ngx_cycle_t *cycle)
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for (i = 0; i < cycle->connection_n; i++) {
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if (c[i].fd != -1
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&& c[i].read
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+#if (HAVE_SOCKET_CLOEXEC_PATCH)
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+ && !c[i].read->skip_socket_leak_check
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+#endif
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&& !c[i].read->accept
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&& !c[i].read->channel
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&& !c[i].read->resolver)
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diff --git a/src/os/unix/ngx_socket.h b/src/os/unix/ngx_socket.h
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index fcc51533..d1eebf47 100644
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--- a/src/os/unix/ngx_socket.h
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+++ b/src/os/unix/ngx_socket.h
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@@ -38,6 +38,17 @@ int ngx_blocking(ngx_socket_t s);
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#endif
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+#if (NGX_HAVE_FD_CLOEXEC)
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+
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+#define ngx_cloexec(s) fcntl(s, F_SETFD, FD_CLOEXEC)
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+#define ngx_cloexec_n "fcntl(FD_CLOEXEC)"
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+
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+/* at least FD_CLOEXEC is required to ensure connection fd is closed
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+ * after execve */
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+#define HAVE_SOCKET_CLOEXEC_PATCH 1
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+
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+#endif
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+
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int ngx_tcp_nopush(ngx_socket_t s);
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int ngx_tcp_push(ngx_socket_t s);
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