Add package-notes-srpm-macros subpackage to configure rpm builds

generate-rpm-note.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+
+pad_string() {
+    for _ in $(seq "$1"); do
+        printf ' BYTE(0x00)'
+    done
+}
+
+write_string() {
+    text="$1"
+    prefix="$2"
+    label="$3"
+    total="$4"
+
+    printf "%s/* %s: '%s' */" "$prefix" "$label" "$text"
+    for i in $(seq ${#text}); do
+        if (( i % 4 == 1 )); then
+            printf '\n%s' "$prefix"
+        else
+            printf ' '
+        fi
+        printf 'BYTE(0x%02x)' "'${text:i-1:1}"
+    done
+
+    pad_string $(( total - ${#text} ))
+    printf '\n'
+}
+
+write_script() {
+    value_len=$(( (${#1} + 3) / 4 * 4 ))
+
+    printf 'SECTIONS\n{\n'
+    printf '    .note.package (READONLY) : ALIGN(4) {\n'
+    printf '        BYTE(0x04) BYTE(0x00) BYTE(0x00) BYTE(0x00) /* Length of Owner including NUL */\n'
+    printf '        BYTE(0x%02x) BYTE(0x%02x) BYTE(0x00) BYTE(0x00) /* Length of Value including NUL */\n' \
+           $((value_len % 256)) $((value_len / 256))
+
+    printf '        BYTE(0x7e) BYTE(0x1a) BYTE(0xfe) BYTE(0xca) /* Note ID */\n'
+    printf "        BYTE(0x46) BYTE(0x44) BYTE(0x4f) BYTE(0x00) /* Owner: 'FDO' */\n"
+
+    write_string "$1" '        ' 'Value' "$value_len"
+
+    printf '    }\n}\n'
+    printf 'INSERT AFTER .note.gnu.build-id;\n'
+}
+
+cpe="$(cat /usr/lib/system-release-cpe)"
+json="$(printf '{"type":"rpm","name":"%s","version":"%s","architecture":"%s","osCpe":"%s"}' "$1" "$2" "$3" "$cpe")"
+write_script "$json"

macros.generate-package-notes-srpm

@@ -0,0 +1,8 @@
+# Add an ELF note with information about the package the code was compiled for.
+# See https://fedoraproject.org/wiki/Changes/Package_information_on_ELF_objects
+# for details.
+%_package_note_file     %{_builddir}/.package_note-%{name}-%{version}-%{release}.%{_arch}.ld
+
+%_package_note_flags    %{?name:-Wl,-dT,%{_package_note_file}}
+
+%_generate_package_note_file %{?name: if ! [ -f %{_package_note_file} ] && [ -f %{_rpmconfigdir}/generate-rpm-note.sh ]; then %{_rpmconfigdir}/generate-rpm-note.sh %{name} %{version}-%{release} %{_arch} >%{_package_note_file}; fi}

package-notes.spec

@@ -10,13 +10,25 @@ License:        CC0
 URL:            %{forgeurl}
 Source0:        %{forgesource}
 
+Source1:        generate-rpm-note.sh
+Source2:        macros.package-notes-srpm
+
 BuildArch:      noarch
 BuildRequires:  python3-devel
 Requires:       python3dist(simplejson)
 
 %description
 This package provides a generator of linker scripts that insert a section with
-a note with a JSON payload that describes the package the binary was built for.
+an ELF note with a JSON payload that describes the package the binary was built
+for.
+
+%package srpm-macros
+Summary:        %{summary}
+
+%description srpm-macros
+RPM macros to inject a linker script into link flags and a helper to generate
+a script that inserts a section with an ELF note with a JSON payload that
+describes the package the binary was built for.
 
 %prep
 %autosetup
@@ -26,11 +38,19 @@ a note with a JSON payload that describes the package the binary was built for.
 
 %install
 install -Dt %{buildroot}%{_bindir}/ generate-package-notes
-install -m 0644 -Dt %{buildroot}%{_mandir}/man1/ debian/generate-package-notes.1
+install -m0644 -Dt %{buildroot}%{_mandir}/man1/ debian/generate-package-notes.1
+
+# A partial reimplementation without Python
+install -Dt %{buildroot}%{_rpmconfigdir}/ %{SOURCE1}
+install -m0644 -Dt %{buildroot}%{_rpmmacrodir}/ %{SOURCE2}
 
 %files
 %{_bindir}/generate-package-notes
 %{_mandir}/man1/generate-package-notes.1*
 
+%files srpm-macros
+%{_rpmconfigdir}/generate-rpm-note.sh
+%{_rpmmacrodir}/macros.package-notes-srpm
+
 %changelog
 %autochangelog