27 lines
1.1 KiB
JavaScript
27 lines
1.1 KiB
JavaScript
$NetBSD: patch-toolkit_modules_subprocess_subprocess__shared__unix.js,v 1.2 2019/07/11 11:32:40 ryoon Exp $
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Fix broken native messaging on NetBSD and possibly other BSDs too:
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https://bugzilla.mozilla.org/show_bug.cgi?id=1543602
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Please remove this patch when the upstream issue is resolved.
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--- toolkit/modules/subprocess/subprocess_shared_unix.js.orig 2019-07-06 01:49:01.000000000 +0000
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+++ toolkit/modules/subprocess/subprocess_shared_unix.js
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@@ -12,7 +12,15 @@
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const LIBC = OS.Constants.libc;
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-const LIBC_CHOICES = ["libc.so", "libSystem.B.dylib", "a.out"];
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+/* libc.so isn't meant to be dlopen'ed. On Linux it's usually an ld
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+ * script so one cannot dlopen it. On NetBSD (and possibly other
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+ * BSDs too) dlopen'ing libc.so will succeed, but some global symbols,
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+ * especially environ(7), are pointing to unused memory regions
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+ * because they are meant to be overridden by the main executable.
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+ * So the most portable way to access libc symbols is to do it through
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+ * the NULL handle, i.e. the one which NSPR calls "a.out".
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+ */
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+const LIBC_CHOICES = ["a.out"];
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const unix = {
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pid_t: ctypes.int32_t,
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