Useful SELinux Functions based on http://dev.gentoo.org/~swift/blog/01/selinux-funcs.txt but modified to be EL9 specific. Also tested and working on EL8 and EL7, and Fedora 41.

selinux-funcs-el9.txt

# sefindif - Find interface definitions that have a string that matches the
# given regular expression
sefindif() {
  REGEXP="$1";
  pushd /usr/share/selinux/devel/include > /dev/null 2>&1;
  for FILE in */*.if;
  do
    awk "/(interface\(|template\()/ { NAME=\$NF; P=0 }; /${REGEXP}/ { if (P==0) {P=1; print NAME}; print };" ${FILE} | sed -e "s:^:${FILE}\: :g";
  done
  popd > /dev/null 2>&1;
}

# seshowif - Show the interface definition
seshowif() {
  INTERFACE="$1";
  pushd /usr/share/selinux/devel/include > /dev/null 2>&1;
  for FILE in */*.if;
  do
    grep -A 9999 "\(interface(\`${INTERFACE}'\|template(\`${INTERFACE}'\)" ${FILE} | grep -B 9999 -m 1 "^')";
  done
  popd > /dev/null 2>&1;
}

# sefinddef - Find macro definitions that have a string that matches the given
# regular expression
sefinddef() {
  REGEXP="$1";
  grep -H "define(\`.*${REGEXP}.*" /usr/share/selinux/devel/include/support/* | sed -e 's:.*\/\([^(]*\):\1:g'
}

# seshowdef - Show the macro definition
seshowdef() {
  MACRONAME="$1";
  pushd /usr/share/selinux/devel/include/support > /dev/null 2>&1;
  for FILE in *.spt;
  do
    grep -A 9999 "define(\`${MACRONAME}'" ${FILE} | grep -B 999 -m 1 "')";
  done
  popd > /dev/null 2>&1;
}

# sefindcon - Find macro definitions for constrains
sefindcon() {
  awk "/(interface\(|template\()/ { NAME=\$NF; P=0 }; /${REGEXP}/ { if (P==0) {P=1; print NAME}; print };" ${POLICY_LOCATION}/policy/constraints | sed -e "s:^:${FILE}\: :g";
}

# selist - List all templates/interfaces in the order allowed by refpolicy
selist() {
  pushd /usr/share/selinux/devel/include > /dev/null 2>&1;
  (
  egrep '^(interface|template)' kernel/kernel.if | awk -F'`' '{print $2}' | sed -e "s:',::g" | sed -e "s:$: (kernel, kernel):g" | sort;
  egrep '^(interface|template)' kernel/*.if | grep -v 'kernel/kernel.if' | awk -F'`' '{print $2}' | sed -e "s:',::g" | sed -e "s:$: (kernel, other):g" | sort;
  egrep '^(interface|template)' system/*.if | awk -F'`' '{print $2}' | sed -e "s:',::g" | sed -e "s:$: (system):g" | sort;
  egrep '^(interface|template)' admin/*.if apps/*.if roles/*.if services/*.if contrib/*.if | awk -F'`' '{print $2}' | sed -e "s:',::g" | sort;
  ) | nl | sed -e "s:$: :g";
  popd > /dev/null 2>&1;
}