From a80dbef8bf64db63385db61862d5b77ee10591d7 Mon Sep 17 00:00:00 2001
From: jow <jow@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Sun, 17 Jul 2011 07:18:59 +0000
Subject: [package] uhttpd: unblock signals in CGI childs, solves hanging ssh
 logout after server restart from within LuCI and similar problems

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27628 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 package/uhttpd/src/uhttpd-cgi.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'package/uhttpd/src/uhttpd-cgi.c')

diff --git a/package/uhttpd/src/uhttpd-cgi.c b/package/uhttpd/src/uhttpd-cgi.c
index 8c17251b3..ed688514c 100644
--- a/package/uhttpd/src/uhttpd-cgi.c
+++ b/package/uhttpd/src/uhttpd-cgi.c
@@ -157,6 +157,8 @@ void uh_cgi_request(
 	fd_set reader;
 	fd_set writer;
 
+	sigset_t ss;
+
 	struct sigaction sa;
 	struct timeval timeout;
 	struct http_response *res;
@@ -187,6 +189,10 @@ void uh_cgi_request(
 
 		/* exec child */
 		case 0:
+			/* unblock signals */
+			sigemptyset(&ss);
+			sigprocmask(SIG_SETMASK, &ss, NULL);
+
 			/* restore SIGTERM */
 			sa.sa_flags = 0;
 			sa.sa_handler = SIG_DFL;
@@ -201,6 +207,10 @@ void uh_cgi_request(
 			dup2(rfd[1], 1);
 			dup2(wfd[0], 0);
 
+			/* avoid leaking our pipe into child-child processes */
+			fd_cloexec(rfd[1]);
+			fd_cloexec(wfd[0]);
+
 			/* check for regular, world-executable file _or_ interpreter */
 			if( ((pi->stat.st_mode & S_IFREG) &&
 			     (pi->stat.st_mode & S_IXOTH)) || (ip != NULL)
-- 
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