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75 lines
2.1 KiB
Diff
75 lines
2.1 KiB
Diff
https://github.com/dgoulet/torsocks/pull/56
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From e0e935c1f38f2952375e3fb5e771215035c59064 Mon Sep 17 00:00:00 2001
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From: Tee KOBAYASHI <xtkoba@gmail.com>
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Date: Sat, 5 Mar 2022 09:05:16 +0900
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Subject: [PATCH] Fix deadlock in initializer
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Downstream issue: https://github.com/termux/termux-packages/issues/8464
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---
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src/lib/close.c | 2 +-
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src/lib/torsocks.c | 13 ++++++++++++-
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2 files changed, 13 insertions(+), 2 deletions(-)
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diff --git a/src/lib/close.c b/src/lib/close.c
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index 0bf9ea7..efb5967 100644
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--- a/src/lib/close.c
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+++ b/src/lib/close.c
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@@ -68,7 +68,7 @@ LIBC_CLOSE_RET_TYPE tsocks_close(LIBC_CLOSE_SIG)
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LIBC_CLOSE_DECL
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{
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if (!tsocks_libc_close) {
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- tsocks_initialize();
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+ tsocks_initialize_libc_symbols();
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}
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return tsocks_close(LIBC_CLOSE_ARGS);
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}
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diff --git a/src/lib/torsocks.c b/src/lib/torsocks.c
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index 16f2da0..8087ed8 100644
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--- a/src/lib/torsocks.c
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+++ b/src/lib/torsocks.c
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@@ -47,6 +47,9 @@ struct configuration tsocks_config;
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*/
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struct onion_pool tsocks_onion_pool;
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+/* Indicate if libc symbols were initialized previously. */
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+static TSOCKS_INIT_ONCE(init_libc_symbols_once);
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+
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/* Indicate if the library was initialized previously. */
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static TSOCKS_INIT_ONCE(init_once);
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@@ -321,7 +324,7 @@ static void tsocks_init(void)
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* We need to save libc symbols *before* we override them so torsocks can
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* use the original libc calls.
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*/
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- init_libc_symbols();
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+ tsocks_once(&init_libc_symbols_once, &init_libc_symbols);
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/*
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* Read configuration file and set the global config.
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@@ -695,6 +698,14 @@ void *tsocks_find_libc_symbol(const char *symbol,
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return fct_ptr;
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}
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+/*
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+ * Initialize libc symbols.
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+ */
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+void __attribute__((constructor)) tsocks_initialize_libc_symbols(void)
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+{
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+ tsocks_once(&init_libc_symbols_once, &init_libc_symbols);
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+}
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+
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/*
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* Initialize torsocks library.
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*/
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--- a/src/lib/torsocks.h
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+++ b/src/lib/torsocks.h
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@@ -452,6 +452,7 @@
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int tsocks_tor_resolve(int af, const char *hostname, void *ip_addr);
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int tsocks_tor_resolve_ptr(const char *addr, char **ip, int af);
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void tsocks_initialize(void);
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+void tsocks_initialize_libc_symbols(void);
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void tsocks_cleanup(void);
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#endif /* TORSOCKS_H */
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