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hardening flags for fedora rpmbuilds

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This commit sets the CGO_CFLAGS variable for hardening the Fedora rpm
binaries.

The flags used are the same as those in the official Fedora rpms.
Setting the flags in upstream spec would provide early warnings for
flag adjustments or other hardening issues.

Signed-off-by: Lokesh Mandvekar <lsm5@fedoraproject.org>
This commit is contained in:
Lokesh Mandvekar
2021-02-09 15:46:11 -05:00
parent 8600c3b8e2
commit 21deafba85
1 changed files with 23 additions and 0 deletions
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23
contrib/spec/podman.spec.in
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@ -380,6 +380,29 @@ tar zxf %{SOURCE1}
%build
mkdir _build
pushd _build
# These flags should work for all rpm distros and arches
export CGO_CFLAGS="-O2 -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -ffat-lto-objects -fexceptions -fasynchronous-unwind-tables -fstack-protector-strong -fstack-clash-protection -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
%if 0%{?fedora} || 0%{?rhel}
# This flag is only present on RH-family distros
export CGO_CFLAGS+=" -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1"
%endif
%ifnarch %{ix86}
# Build fails on i686 with this flag
export CGO_CFLAGS+=" -D_FILE_OFFSET_BITS=64"
%endif
%ifarch x86_64
# Builds only on x86_64 with this flag
export CGO_CFLAGS+=" -m64 -mtune=generic"
%if 0%{?fedora} || 0%{?rhel} >= 8
# Build fails on rhel7 and non-86_64 with this flag
export CGO_CFLAGS+=" -fcf-protection"
%endif
%endif
mkdir -p src/%{provider}.%{provider_tld}/%{project}
ln -s ../../../../ src/%{import_path}
popd