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Accepting request 641192 from home:gary_lin:branches:Base:System

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fix StrnCpy(), StpnCpy(), and StrnCat()

OBS-URL: https://build.opensuse.org/request/show/641192
OBS-URL: https://build.opensuse.org/package/show/Base:System/gnu-efi?expand=0&rev=33
This commit is contained in:
Raymund Will 2018-10-11 12:54:46 +00:00 committed by Git OBS Bridge
parent 4187da9ac9
commit fad3c2e199
3 changed files with 159 additions and 0 deletions
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151
gnu-efi-fix-strncpy-stpncpy-strncat.patch Normal file
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@ -0,0 +1,151 @@
From 85f1c797f6935223205159dd108e4871b2e55500 Mon Sep 17 00:00:00 2001
From: Pete Batard <pete@akeo.ie>
Date: Tue, 24 Apr 2018 13:45:11 +0100
Subject: [PATCH 1/4] Fix conversion from 'UINTN' to 'UINT8' warnings
* MSVC generates two of the following in rtstr.c:
warning C4244: 'function': conversion from 'UINTN' to 'UINT8', possible loss of data
---
lib/runtime/rtstr.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/runtime/rtstr.c b/lib/runtime/rtstr.c
index 80ff489..dcc1a2a 100644
--- a/lib/runtime/rtstr.c
+++ b/lib/runtime/rtstr.c
@@ -71,7 +71,7 @@ RtStrnCpy (
{
UINTN Size = RtStrnLen(Src, Len);
if (Size != Len)
- RtSetMem(Dest + Len, '\0', (Len - Size) * sizeof(CHAR16));
+ RtSetMem(Dest + Len, '\0', (UINT8)((Len - Size) * sizeof(CHAR16)));
RtCopyMem(Dest, Src, Size * sizeof(CHAR16));
}
@@ -107,7 +107,7 @@ RtStpnCpy (
{
UINTN Size = RtStrnLen(Src, Len);
if (Size != Len)
- RtSetMem(Dest + Len, '\0', (Len - Size) * sizeof(CHAR16));
+ RtSetMem(Dest + Len, '\0', (UINT8)((Len - Size) * sizeof(CHAR16)));
RtCopyMem(Dest, Src, Size * sizeof(CHAR16));
return Dest + Size;
}
--
2.19.0
From 4889dc561f905406f3d0a648321589bd47703fdc Mon Sep 17 00:00:00 2001
From: Gary Lin <glin@suse.com>
Date: Tue, 9 Oct 2018 18:35:21 +0800
Subject: [PATCH 2/4] Set '\0' properly in StrnCpy()
The arguments to SetMem() were wrong. Besides, SetMem() should start at
"Dest + Size" since "Size" will be smaller than "Len" if they are not
equal.
Signed-off-by: Gary Lin <glin@suse.com>
---
lib/runtime/rtstr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/runtime/rtstr.c b/lib/runtime/rtstr.c
index dcc1a2a..949f938 100644
--- a/lib/runtime/rtstr.c
+++ b/lib/runtime/rtstr.c
@@ -71,7 +71,7 @@ RtStrnCpy (
{
UINTN Size = RtStrnLen(Src, Len);
if (Size != Len)
- RtSetMem(Dest + Len, '\0', (UINT8)((Len - Size) * sizeof(CHAR16)));
+ RtSetMem(Dest + Size, (Len - Size) * sizeof(CHAR16), '\0');
RtCopyMem(Dest, Src, Size * sizeof(CHAR16));
}
--
2.19.0
From 38a9921bc39fea25b0ca62d6eb1595bf15d05839 Mon Sep 17 00:00:00 2001
From: Gary Lin <glin@suse.com>
Date: Thu, 11 Oct 2018 12:02:27 +0800
Subject: [PATCH 3/4] Implement StrnCat() without StrnCpy()
StrnCpy() doesn't guarantee the dest string will be null-terminated, so
we shouldn't use StrnCpy().
Signed-off-by: Gary Lin <glin@suse.com>
---
lib/runtime/rtstr.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/lib/runtime/rtstr.c b/lib/runtime/rtstr.c
index 949f938..fe65d96 100644
--- a/lib/runtime/rtstr.c
+++ b/lib/runtime/rtstr.c
@@ -126,7 +126,7 @@ RtStrCat (
}
#ifndef __GNUC__
-#pragma RUNTIME_CODE(RtStrCat)
+#pragma RUNTIME_CODE(RtStrnCat)
#endif
VOID
RUNTIMEFUNCTION
@@ -136,7 +136,12 @@ RtStrnCat (
IN UINTN Len
)
{
- RtStrnCpy(Dest+StrLen(Dest), Src, Len);
+ UINTN DestSize, Size;
+
+ DestSize = StrLen(Dest);
+ Size = RtStrnLen(Src, Len);
+ RtCopyMem(Dest + DestSize, Src, Size * sizeof(CHAR16));
+ Dest[DestSize + Size] = '\0';
}
#ifndef __GNUC__
--
2.19.0
From 134587ea094a4974e5773bf228f6436535f50f1a Mon Sep 17 00:00:00 2001
From: Gary Lin <glin@suse.com>
Date: Thu, 11 Oct 2018 16:10:26 +0800
Subject: [PATCH 4/4] Set '\0' properly in StpnCpy()
The arguments to SetMem() were wrong. Besides, SetMem() should start at
"Dest + Size" since "Size" will be smaller than "Len" if they are not
equal.
Signed-off-by: Gary Lin <glin@suse.com>
---
lib/runtime/rtstr.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/runtime/rtstr.c b/lib/runtime/rtstr.c
index fe65d96..73965ca 100644
--- a/lib/runtime/rtstr.c
+++ b/lib/runtime/rtstr.c
@@ -94,7 +94,7 @@ RtStpCpy (
}
#ifndef __GNUC__
-#pragma RUNTIME_CODE(RtStrnCpy)
+#pragma RUNTIME_CODE(RtStpnCpy)
#endif
CHAR16 *
RUNTIMEFUNCTION
@@ -107,7 +107,7 @@ RtStpnCpy (
{
UINTN Size = RtStrnLen(Src, Len);
if (Size != Len)
- RtSetMem(Dest + Len, '\0', (UINT8)((Len - Size) * sizeof(CHAR16)));
+ RtSetMem(Dest + Size, (Len - Size) * sizeof(CHAR16), '\0');
RtCopyMem(Dest, Src, Size * sizeof(CHAR16));
return Dest + Size;
}
--
2.19.0

6
gnu-efi.changes
View File

@ -1,3 +1,9 @@
-------------------------------------------------------------------
Thu Oct 11 08:15:40 UTC 2018 - Gary Ching-Pang Lin <glin@suse.com>
- Add gnu-efi-fix-strncpy-stpncpy-strncat.patch to fix StrnCpy(),
StpnCpy(), and StrnCat()
-------------------------------------------------------------------
Fri Oct 5 09:19:44 UTC 2018 - Gary Ching-Pang Lin <glin@suse.com>

2
gnu-efi.spec
View File

@ -25,6 +25,7 @@ Group: Development/Libraries/Other
Url: http://sourceforge.net/projects/gnu-efi
Source: http://sourceforge.net/projects/gnu-efi/files/gnu-efi-%{version}.tar.bz2
Source1: %{name}-rpmlintrc
Patch1: %{name}-fix-strncpy-stpncpy-strncat.patch
BuildRequires: kernel-source
BuildRoot: %{_tmppath}/%{name}-%{version}-build
ExclusiveArch: ia64 %ix86 x86_64 aarch64 %arm
@ -36,6 +37,7 @@ environment.
%prep
%setup -q
%patch1 -p1
%build
##########################