[PR PATCH] firefox: fix sandbox for fcntl

[jnbr <jnbr@users.noreply.github.com>]

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There is a new pull request by jnbr against master on the void-packages repository

https://github.com/jnbr/void-packages fiefox-dbg
https://github.com/void-linux/void-packages/pull/26663

firefox: fix sandbox for fcntl
fixes #26639 

[ci skip]

A patch file from https://github.com/void-linux/void-packages/pull/26663.patch is attached

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From b62dfffaf18a177d6d9c51a8ae1aac1ad0d30f7d Mon Sep 17 00:00:00 2001
From: Johannes <johannes.brechtmann@gmail.com>
Date: Mon, 23 Nov 2020 22:45:51 +0100
Subject: [PATCH] firefox: fix sandbox for fcntl

The assumption that O_LARGEFILE is 0 is only true on glibc,
setting it to 00100000 is wrong for many architectures.
---
 .../firefox/patches/sandbox-largefile.patch    | 18 ++++++++++++++++++
 srcpkgs/firefox/template                       |  2 +-
 2 files changed, 19 insertions(+), 1 deletion(-)
 create mode 100644 srcpkgs/firefox/patches/sandbox-largefile.patch

diff --git a/srcpkgs/firefox/patches/sandbox-largefile.patch b/srcpkgs/firefox/patches/sandbox-largefile.patch
new file mode 100644
index 00000000000..eb10510a90c
--- /dev/null
+++ b/srcpkgs/firefox/patches/sandbox-largefile.patch
@@ -0,0 +1,18 @@
+in case O_LARGEFILE is not set to 0, use the real value
+
+--- security/sandbox/linux/SandboxFilter.cpp	2020-11-23 22:41:14.556378950 +0100
++++ security/sandbox/linux/SandboxFilter.cpp	2020-11-23 22:40:23.595806444 +0100
+@@ -66,9 +66,13 @@
+ #  define PR_SET_PTRACER 0x59616d61
+ #endif
+ 
++#if O_LARGEFILE == 0
+ // The headers define O_LARGEFILE as 0 on x86_64, but we need the
+ // actual value because it shows up in file flags.
+ #define O_LARGEFILE_REAL 00100000
++#else
++#define O_LARGEFILE_REAL O_LARGEFILE
++#endif
+ 
+ // Not part of UAPI, but userspace sees it in F_GETFL; see bug 1650751.
+ #define FMODE_NONOTIFY 0x4000000
diff --git a/srcpkgs/firefox/template b/srcpkgs/firefox/template
index 8383fcc952f..7d792ca84e7 100644
--- a/srcpkgs/firefox/template
+++ b/srcpkgs/firefox/template
@@ -4,7 +4,7 @@
 #
 pkgname=firefox
 version=83.0
-revision=1
+revision=2
 build_helper="rust"
 short_desc="Mozilla Firefox web browser"
 maintainer="Johannes <johannes.brechtmann@gmail.com>"