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https://github.com/Divested-Mobile/DivestOS-Build.git
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29 lines
1.1 KiB
Diff
29 lines
1.1 KiB
Diff
From 7aee5e85160c025a6d3f0460f4482aadb985c0f3 Mon Sep 17 00:00:00 2001
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From: Nick Kralevich <nnk@google.com>
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Date: Sat, 19 Nov 2016 09:09:16 -0800
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Subject: [PATCH] TetherController.cpp: add O_CLOEXEC
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Don't leak open file descriptors across execs to netd's children. This
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can occur in the unlikely but theoretically possible event that one
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thread is in writeToFile() and another thread happens to call exec().
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Test: device boots with no obvious problems.
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Change-Id: Iabd8eee46bf94d70894ca46e58484ccb8241513a
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---
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server/TetherController.cpp | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/server/TetherController.cpp b/server/TetherController.cpp
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index 3cc46368..65c88ede 100644
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--- a/server/TetherController.cpp
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+++ b/server/TetherController.cpp
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@@ -46,7 +46,7 @@ const char IPV6_FORWARDING_PROC_FILE[] = "/proc/sys/net/ipv6/conf/all/forwarding
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const char SEPARATOR[] = "|";
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bool writeToFile(const char* filename, const char* value) {
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- int fd = open(filename, O_WRONLY);
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+ int fd = open(filename, O_WRONLY | O_CLOEXEC);
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if (fd < 0) {
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ALOGE("Failed to open %s: %s", filename, strerror(errno));
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return false;
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