Merge remote-tracking branch 'nl6720/more-quiet'

* nl6720/more-quiet:
  mkarchiso: use mkfs.erofs --quiet in quiet mode
  mkarchiso: use mksquashfs -quiet instead of redirecting its stdout to /dev/null
  mkarchiso: do not show subdirectory sizes in netboot mode
  mkarchiso: redirect command -v output to /dev/null
  mkarchiso: silence xorriso's note about SOURCE_DATE_EPOCH
  mkarchiso: silence mkfs.fat in quiet mode

archiso/mkarchiso

@@ -165,13 +165,10 @@ _cleanup_pacstrap_dir() {
 # Create a squashfs image and place it in the ISO 9660 file system.
 # $@: options to pass to mksquashfs
 _run_mksquashfs() {
-    local image_path="${isofs_dir}/${install_dir}/${arch}/airootfs.sfs"
+    local mksquashfs_options=() image_path="${isofs_dir}/${install_dir}/${arch}/airootfs.sfs"
     rm -f -- "${image_path}"
-    if [[ "${quiet}" == "y" ]]; then
-        mksquashfs "$@" "${image_path}" -noappend "${airootfs_image_tool_options[@]}" -no-progress > /dev/null
-    else
-        mksquashfs "$@" "${image_path}" -noappend "${airootfs_image_tool_options[@]}"
-    fi
+    [[ ! "${quiet}" == "y" ]] || mksquashfs_options+=('-no-progress' '-quiet')
+    mksquashfs "$@" "${image_path}" -noappend "${airootfs_image_tool_options[@]}" "${mksquashfs_options[@]}"
 }
 
 # Create an ext4 image containing the root file system and pack it inside a squashfs image.
@@ -216,16 +213,18 @@ _mkairootfs_squashfs() {
 
 # Create an EROFS image containing the root file system and saves it on the ISO 9660 file system.
 _mkairootfs_erofs() {
-    local fsuuid
+    local fsuuid mkfs_erofs_options=()
     [[ -e "${pacstrap_dir}" ]] || _msg_error "The path '${pacstrap_dir}' does not exist" 1
 
     install -d -m 0755 -- "${isofs_dir}/${install_dir}/${arch}"
     local image_path="${isofs_dir}/${install_dir}/${arch}/airootfs.erofs"
     rm -f -- "${image_path}"
+    [[ ! "${quiet}" == "y" ]] || mkfs_erofs_options+=('--quiet')
     # Generate reproducible file system UUID from SOURCE_DATE_EPOCH
     fsuuid="$(uuidgen --sha1 --namespace 93a870ff-8565-4cf3-a67b-f47299271a96 --name "${SOURCE_DATE_EPOCH}")"
+    mkfs_erofs_options+=('-U' "${fsuuid}" "${airootfs_image_tool_options[@]}")
     _msg_info "Creating EROFS image, this may take some time..."
-    mkfs.erofs -U "${fsuuid}" "${airootfs_image_tool_options[@]}" -- "${image_path}" "${pacstrap_dir}"
+    mkfs.erofs "${mkfs_erofs_options[@]}" -- "${image_path}" "${pacstrap_dir}"
     _msg_info "Done!"
 }
 
@@ -505,7 +504,13 @@ _make_efibootimg() {
     # https://lists.gnu.org/archive/html/grub-devel/2019-04/msg00099.html
     rm -f -- "${work_dir}/efiboot.img"
     _msg_info "Creating FAT image of size: ${imgsize} KiB..."
-    mkfs.fat -C -n ARCHISO_EFI "${work_dir}/efiboot.img" "${imgsize}"
+    if [[ "${quiet}" == "y" ]]; then
+        # mkfs.fat does not have a -q/--quiet option, so redirect stdout to /dev/null instead
+        # https://github.com/dosfstools/dosfstools/issues/103
+        mkfs.fat -C -n ARCHISO_EFI "${work_dir}/efiboot.img" "${imgsize}" > /dev/null
+    else
+        mkfs.fat -C -n ARCHISO_EFI "${work_dir}/efiboot.img" "${imgsize}"
+    fi
 
     # Create the default/fallback boot path in which a boot loaders will be placed later.
     mmd -i "${work_dir}/efiboot.img" ::/EFI ::/EFI/BOOT
@@ -698,7 +703,7 @@ _export_netboot_artifacts() {
     install -d -m 0755 "${out_dir}"
     cp -a -- "${isofs_dir}/${install_dir}/" "${out_dir}/"
     _msg_info "Done!"
-    du -h -- "${out_dir}/${install_dir}"
+    du -hs -- "${out_dir}/${install_dir}"
 }
 
 # sign build artifacts for netboot
@@ -742,7 +747,7 @@ _validate_requirements_airootfs_image_type_ext4+squashfs() {
 }
 
 _validate_requirements_airootfs_image_type_erofs() {
-    if ! command -v mkfs.erofs; then
+    if ! command -v mkfs.erofs &> /dev/null; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating '${airootfs_image_type}': mkfs.erofs is not available on this host. Install 'erofs-utils'!" 0
     fi
@@ -989,12 +994,17 @@ _build_bootstrap_image() {
 
 # Build ISO
 _build_iso_image() {
-    local xorrisofs_options=()
+    local xorriso_options=() xorrisofs_options=()
     local bootmode
 
     [[ -d "${out_dir}" ]] || install -d -- "${out_dir}"
 
-    [[ "${quiet}" == "y" ]] && xorrisofs_options+=('-quiet')
+    if [[ "${quiet}" == "y" ]]; then
+        # The when xorriso is run in mkisofs compatibility mode (xorrisofs), the mkisofs option -quiet is interpreted
+        # too late (e.g. messages about SOURCE_DATE_EPOCH still get shown).
+        # Instead use native xorriso option to silence the output.
+        xorriso_options=('-report_about' 'SORRY' "${xorriso_options[@]}")
+    fi
 
     # Add required xorrisofs options for each boot mode
     for bootmode in "${bootmodes[@]}"; do
@@ -1003,7 +1013,7 @@ _build_iso_image() {
 
     rm -f -- "${out_dir}/${image_name}"
     _msg_info "Creating ISO image..."
-    xorriso -as mkisofs \
+    xorriso "${xorriso_options[@]}" -as mkisofs \
             -iso-level 3 \
             -full-iso9660-filenames \
             -joliet \