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Thiago Macieira d57bf5e8aa QRandomGenerator: mix the Linux AT_RANDOM random bytes in the fallback 
The Linux kernel gives us 16 bytes of random data and sets a pointer to
it in the ELF AuxV (the same one that allows us to get HWCAP on ARM
systems). So if we end up in the fallback generator, at leat we'll get a
good amount of entropy to seed the Mersenne Twister.

This could happen if the application is run in a chroot(2) or container
without /dev/random or /dev/urandom. That is probably an installation
mistake, so we don't optimize this case for performance.

With this commit, we have now good, high-quality fallbacks for Windows
(rand_s), for BSDs (arc4random) and for Linux. The only missing,
supported OS without a good entropy source is QNX.

Change-Id: Ia3e896da908f42939148fffd14c5b1084051f1a8
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2017-06-12 06:15:01 +00:00
bin don't try to timestamp injected qvulkanfunctions.h 2017-03-22 15:49:19 +00:00
config.tests Add proper detection of x86 RDRAND instruction 2017-06-12 06:14:48 +00:00
dist Revert "Add qt_safe_ftok wrapper for ftok" 2017-05-18 21:17:52 +00:00
doc Merge remote-tracking branch 'origin/5.9' into dev 2017-05-29 10:54:41 +02:00
examples Typo-fix: s/looses/loses/g 2017-06-08 13:36:18 +00:00
lib Purge all fonts 2015-08-18 19:59:14 +00:00
mkspecs Add proper detection of x86 RDRAND instruction 2017-06-12 06:14:48 +00:00
qmake Move qrand() & qsrand() to qrandom.cpp 2017-06-12 06:14:37 +00:00
src QRandomGenerator: mix the Linux AT_RANDOM random bytes in the fallback 2017-06-12 06:15:01 +00:00
tests QTemporaryFile: fix the generation of names from templates 2017-06-12 06:14:43 +00:00
util Clean up in CLDR scripts for QLocale 2017-06-09 08:24:55 +00:00
.gitattributes Update the git-archive export options 2012-09-07 15:39:31 +02:00
.gitignore Overhaul .gitignore 2017-02-16 15:11:05 +00:00
.qmake.conf Bump version 2017-05-12 13:39:51 +02:00
.tag Update the git-archive export options 2012-09-07 15:39:31 +02:00
config_help.txt Restore behavior of using libEGL and libGLESv2 as default for angle 2017-05-11 08:35:54 +00:00
configure Clean up mkspecs from old, unsupported and untested mkspecs 2017-04-27 22:34:34 +00:00
configure.bat configure: balk at any of {{,X}QMAKESPEC,QMAKE{PATH,FEATURES}} being set 2017-04-21 09:22:27 +00:00
configure.json Add proper detection of x86 RDRAND instruction 2017-06-12 06:14:48 +00:00
configure.pri fix licheck calls on 32 bit systems 2017-05-31 12:57:47 +00:00
header.BSD Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.BSD-OLD Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.COMM Add header template for commercial only modules 2015-10-19 10:37:18 +00:00
header.FDL Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.FDL-OLD Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.GPL Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.GPL-EXCEPT Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.LGPL Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.LGPL3 Update copyright headers 2015-02-11 06:49:51 +00:00
header.LGPL3-COMM Update copyright headers 2015-02-11 06:49:51 +00:00
header.LGPL21 Update copyright headers 2015-02-11 06:49:51 +00:00
header.LGPL-NOGPL2 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.LGPL-ONLY Update copyright headers 2015-02-11 06:49:51 +00:00
INSTALL Doc: Update links in INSTALL file 2015-02-16 09:06:41 +00:00
LGPL_EXCEPTION.txt Update copyright headers 2015-02-11 06:49:51 +00:00
LICENSE.FDL Initial import from the monolithic Qt. 2011-04-27 12:05:43 +02:00
LICENSE.GPL2 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
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LICENSE.GPL3-EXCEPT Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.GPLv3 Expand license scope from "Qt GUI Toolkit" to "Qt Toolkit" 2016-06-15 07:02:32 +00:00
LICENSE.LGPL3 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.LGPLv3 Expand license scope from "Qt GUI Toolkit" to "Qt Toolkit" 2016-06-15 07:02:32 +00:00
LICENSE.LGPLv21 Expand license scope from "Qt GUI Toolkit" to "Qt Toolkit" 2016-06-15 07:02:32 +00:00
LICENSE.PREVIEW.COMMERCIAL Add new license header templates and license files 2016-01-14 20:43:46 +00:00
qtbase.pro nuke configure -host-option 2016-12-13 18:55:59 +00:00
sync.profile EDID parser library 2017-05-02 09:11:56 +00:00