From 8d084c989984fda351503258de3f43089293e4e8 Mon Sep 17 00:00:00 2001 From: Gerardo Exequiel Pozzi Date: Mon, 28 Nov 2011 12:28:03 -0300 Subject: [archiso] Add archiso_pxe_curl hook Its add support for downloading the ISO image via HTTP/FTP with curl or download *.sfs files. The files are downloaded on /run/archiso/curlspace (tmpfs) and setup a loop dev from it (like in archiso_loop_mnt) in the ISO case, or just do a bind mount to /run/archiso/bootmnt in the other case. This hook must be located after archiso_pxe_nbd in mkinitcpio.conf, in that way NBD is the default. New bootparm: * archiso_curl_url=(first form) archiso_curl_url=http://192.168.0.7/archlinux/iso/archlinux.iso (absolute form) Use an absolute URL. Fetch the entire ISO archiso_curl_url=ftp://${pxeserver}/archlinux/iso/archlinux.iso (relative form) Use the as IP the same server where PXE reside. Fetch the entire ISO * archiso_curl_url=(second form) archiso_curl_url=http://192.168.0.7/archlinux/iso/unpacked (absolute form) Use an absolute URL. Where unpacked (an example name) is a directory where ${archisobasedir} ("arch" by default) is located with all *.sfs. This fetch only needed files. archiso_curl_url=ftp://${pxeserver}/archlinux/iso/unpacked (relative form) Use the as IP the same server where PXE reside. Where unpacked (an example name) is a directory where ${archisobasedir} ("arch" by default) is located with all *.sfs. This fetch only needed files. * curlspace_size= Set a size for a tmpfs filesystem where files are downloaded. Signed-off-by: Gerardo Exequiel Pozzi --- archiso/Makefile | 4 +++ archiso/hooks/archiso_pxe_curl | 75 ++++++++++++++++++++++++++++++++++++++++ archiso/install/archiso_pxe_curl | 18 ++++++++++ 3 files changed, 97 insertions(+) create mode 100644 archiso/hooks/archiso_pxe_curl create mode 100644 archiso/install/archiso_pxe_curl diff --git a/archiso/Makefile b/archiso/Makefile index 115a15b..0dbbbf8 100644 --- a/archiso/Makefile +++ b/archiso/Makefile @@ -20,6 +20,8 @@ install-hooks: install -D -m 644 install/archiso_pxe_common $(DESTDIR)/lib/initcpio/install/archiso_pxe_common install -D -m 644 hooks/archiso_pxe_nbd $(DESTDIR)/lib/initcpio/hooks/archiso_pxe_nbd install -D -m 644 install/archiso_pxe_nbd $(DESTDIR)/lib/initcpio/install/archiso_pxe_nbd + install -D -m 644 hooks/archiso_pxe_curl $(DESTDIR)/lib/initcpio/hooks/archiso_pxe_curl + install -D -m 644 install/archiso_pxe_curl $(DESTDIR)/lib/initcpio/install/archiso_pxe_curl install -D -m 644 hooks/archiso_loop_mnt $(DESTDIR)/lib/initcpio/hooks/archiso_loop_mnt install -D -m 644 install/archiso_loop_mnt $(DESTDIR)/lib/initcpio/install/archiso_loop_mnt @@ -45,6 +47,8 @@ uninstall: rm -f $(DESTDIR)/lib/initcpio/install/archiso_pxe_common rm -f $(DESTDIR)/lib/initcpio/hooks/archiso_pxe_nbd rm -f $(DESTDIR)/lib/initcpio/install/archiso_pxe_nbd + rm -f $(DESTDIR)/lib/initcpio/hooks/archiso_pxe_curl + rm -f $(DESTDIR)/lib/initcpio/install/archiso_pxe_curl rm -f $(DESTDIR)/lib/initcpio/hooks/archiso_loop_mnt rm -f $(DESTDIR)/lib/initcpio/install/archiso_loop_mnt rm -rf $(DESTDIR)/usr/share/archiso/ diff --git a/archiso/hooks/archiso_pxe_curl b/archiso/hooks/archiso_pxe_curl new file mode 100644 index 0000000..7a553ad --- /dev/null +++ b/archiso/hooks/archiso_pxe_curl @@ -0,0 +1,75 @@ +# vim: set ft=sh: + +run_hook() { + if [[ -n "${ip}" && -n "${archiso_curl_url}" ]]; then + archiso_curl_url=$(eval echo ${archiso_curl_url}) + [[ -z "${curlspace_size}" ]] && curlspace_size="75%" + mount_handler="archiso_pxe_curl_mount_handler" + fi +} + +# Fetch a file with CURL +# +# $1 URL +# $2 Destination directory inside curlspace +_curl_get() { + local _url="${1}" + local _dst="${2}" + + msg ":: Downloading '${_url}'" + if ! curl -f -o "/run/archiso/curlspace/${_dst}/${_url##*/}" --create-dirs "${_url}"; then + echo "ERROR: Downloading '${_url}'" + echo " Falling back to interactive prompt" + echo " You can try to fix the problem manually, log out when you are finished" + launch_interactive_shell + fi +} + +archiso_pxe_curl_mount_handler () { + newroot="${1}" + + msg ":: Mounting /run/archiso/curlspace (tmpfs) filesystem, size='${curlspace_size}'" + mkdir -p "/run/archiso/curlspace" + mount -t tmpfs -o size="${curlspace_size}",mode=0755 curlspace "/run/archiso/curlspace" + + # Check if URL ends in / + if [[ "${archiso_curl_url}" != "${archiso_curl_url%/}" ]]; then + + local _aitab_url="${archiso_curl_url}${aitab#/run/archiso/bootmnt/}" + local _aitab_file="/run/archiso/curlspace/${aitab#/run/archiso/bootmnt/}" + + _curl_get "${_aitab_url}" "${archisobasedir}" + + local aitab_img aitab_mnt aitab_arch aitab_sfs_comp aitab_fs_type aitab_fs_size + while read aitab_img aitab_mnt aitab_arch aitab_sfs_comp aitab_fs_type aitab_fs_size; do + [[ "${aitab_img#\#}" != "${aitab_img}" ]] && continue + [[ "${aitab_arch}" != "any" && "${aitab_arch}" != "${arch}" ]] && continue + if [[ "${aitab_fs_type}" != "none" ]]; then + if [[ "${aitab_sfs_comp}" != "none" ]]; then + _curl_get "${archiso_curl_url}${archisobasedir}/${aitab_arch}/${aitab_img}.fs.sfs" "${archisobasedir}/${aitab_arch}" + else + _curl_get "${archiso_curl_url}${archisobasedir}/${aitab_arch}/${aitab_img}.fs" "${archisobasedir}/${aitab_arch}" + fi + else + _curl_get "${archiso_curl_url}${archisobasedir}/${aitab_arch}/${aitab_img}.sfs" "${archisobasedir}/${aitab_arch}" + fi + done < "${_aitab_file}" + + mkdir -p "/run/archiso/bootmnt" + mount -o bind /run/archiso/curlspace /run/archiso/bootmnt + else + local _dev_loop + + _curl_get "${archiso_curl_url}" "/" + + _dev_loop=$(losetup -f) + if ! losetup "${_dev_loop}" "/run/archiso/curlspace/${archiso_curl_url##*/}"; then + echo "ERROR: Setting loopback device '${_dev_loop}'" + echo " for file '/run/archiso/curlspace/${archiso_curl_url##*/}'" + echo " Falling back to interactive prompt" + echo " You can try to fix the problem manually, log out when you are finished" + launch_interactive_shell + fi + fi + archiso_mount_handler ${newroot} +} diff --git a/archiso/install/archiso_pxe_curl b/archiso/install/archiso_pxe_curl new file mode 100644 index 0000000..a9342ae --- /dev/null +++ b/archiso/install/archiso_pxe_curl @@ -0,0 +1,18 @@ +# vim: set ft=sh: + +build () +{ + MODULES="" + BINARIES="" + FILES="" + SCRIPT="archiso_pxe_curl" + + add_binary "/usr/bin/curl" +} + +help () +{ +cat<