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<title>Tianocore/edk2.git/MdePkg/Library/BaseSafeIntLib/SafeIntLib64.c, branch master</title>
<subtitle>EDK II (mirror)</subtitle>
<id>https://git.radix-linux.su/Tianocore/edk2.git/atom?h=master</id>
<link rel='self' href='https://git.radix-linux.su/Tianocore/edk2.git/atom?h=master'/>
<link rel='alternate' type='text/html' href='https://git.radix-linux.su/Tianocore/edk2.git/'/>
<updated>2021-12-07T17:24:28+00:00</updated>
<entry>
<title>MdePkg: Apply uncrustify changes</title>
<updated>2021-12-07T17:24:28+00:00</updated>
<author>
<name>Michael Kubacki</name>
<email>michael.kubacki@microsoft.com</email>
</author>
<published>2021-12-05T22:54:05+00:00</published>
<link rel='alternate' type='text/html' href='https://git.radix-linux.su/Tianocore/edk2.git/commit/?id=2f88bd3a1296c522317f1c21377876de63de5be7'/>
<id>urn:sha1:2f88bd3a1296c522317f1c21377876de63de5be7</id>
<content type='text'>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737

Apply uncrustify changes to .c/.h files in the MdePkg package

Cc: Andrew Fish &lt;afish@apple.com&gt;
Cc: Leif Lindholm &lt;leif@nuviainc.com&gt;
Cc: Michael D Kinney &lt;michael.d.kinney@intel.com&gt;
Signed-off-by: Michael Kubacki &lt;michael.kubacki@microsoft.com&gt;
Reviewed-by: Liming Gao &lt;gaoliming@byosoft.com.cn&gt;
</content>
</entry>
<entry>
<title>MdePkg: Replace BSD License with BSD+Patent License</title>
<updated>2019-04-09T17:58:13+00:00</updated>
<author>
<name>Michael D Kinney</name>
<email>michael.d.kinney@intel.com</email>
</author>
<published>2019-04-03T23:06:00+00:00</published>
<link rel='alternate' type='text/html' href='https://git.radix-linux.su/Tianocore/edk2.git/commit/?id=9344f0921518309295da89c221d10cbead8531aa'/>
<id>urn:sha1:9344f0921518309295da89c221d10cbead8531aa</id>
<content type='text'>
https://bugzilla.tianocore.org/show_bug.cgi?id=1373

Replace BSD 2-Clause License with BSD+Patent License.  This change is
based on the following emails:

  https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html
  https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html

RFCs with detailed process for the license change:

  V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html
  V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html
  V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney &lt;michael.d.kinney@intel.com&gt;
Reviewed-by: Liming Gao &lt;liming.gao@intel.com&gt;
</content>
</entry>
<entry>
<title>MdePkg/BaseSafeIntLib: Add SafeIntLib class and instance</title>
<updated>2018-01-25T17:42:20+00:00</updated>
<author>
<name>Sean Brogan</name>
<email>sean.brogan@microsoft.com</email>
</author>
<published>2017-04-24T23:37:20+00:00</published>
<link rel='alternate' type='text/html' href='https://git.radix-linux.su/Tianocore/edk2.git/commit/?id=d7a09cb86a0416c099fa3a9e0fbe2c8f399b28de'/>
<id>urn:sha1:d7a09cb86a0416c099fa3a9e0fbe2c8f399b28de</id>
<content type='text'>
https://bugzilla.tianocore.org/show_bug.cgi?id=798

SafeIntLib provides helper functions to prevent integer overflow
during type conversion, addition, subtraction, and multiplication.

Conversion Functions
====================
* Converting from a signed type to an unsigned type of the same
  size, or vice-versa.
* Converting to a smaller type that could possibly overflow.
* Converting from a signed type to a larger unsigned type.

Unsigned Addition, Subtraction, Multiplication
===============================================
* Unsigned integer math functions protect from overflow and
  underflow (in case of subtraction).

Signed Addition, Subtraction, Multiplication
============================================
* Strongly consider using unsigned numbers.
* Signed numbers are often used where unsigned numbers should
  be used. For example file sizes and array indices should always
  be unsigned. Subtracting a larger positive signed number from a
  smaller positive signed number with SafeInt32Sub() will succeed,
  producing a negative number, that then must not be used as an
  array index (but can occasionally be used as a pointer index.)
  Similarly for adding a larger magnitude negative number to a
  smaller magnitude positive number.
* SafeIntLib does not protect you from such errors. It tells you
  if your integer operations overflowed, not if you are doing the
  right thing with your non-overflowed integers.
* Likewise you can overflow a buffer with a non-overflowed
  unsigned index.

Based on content from the following branch/commits:
https://github.com/Microsoft/MS_UEFI/tree/share/MsCapsuleSupport
https://github.com/Microsoft/MS_UEFI/commit/21ef3a321c907b40fa93797619c9f6c686dd92e0
https://github.com/Microsoft/MS_UEFI/commit/ca516b1a61315c2d823f453e12d2135098f53d61
https://github.com/Microsoft/MS_UEFI/commit/33bab4031a417d7d5a7d356c15a14c2e60302b2d

Cc: Sean Brogan &lt;sean.brogan@microsoft.com&gt;
Cc: Jiewen Yao &lt;jiewen.yao@intel.com&gt;
Cc: Liming Gao &lt;liming.gao@intel.com&gt;
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney &lt;michael.d.kinney@intel.com&gt;
Reviewed-by: Sean Brogan &lt;sean.brogan@microsoft.com&gt;
Reviewed-by: Liming Gao &lt;liming.gao@intel.com&gt;
</content>
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