[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 <vmlinuz386@yahoo.com.ar>

4 files changed, 3 insertions, 5 deletions

diff --git a/configs/releng/build.sh b/configs/releng/build.sh
index fcf5e4c..1c58a4e 100755
--- a/configs/releng/build.sh
+++ b/configs/releng/build.sh
@@ -16,7 +16,7 @@ script_path=$(readlink -f ${0%/*})
 # Base installation (root-image)
 make_basefs() {
     mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" -p "base" create
-    mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" -p "memtest86+ syslinux mkinitcpio-nfs-utils nbd" create
+    mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" -p "memtest86+ syslinux mkinitcpio-nfs-utils nbd curl" create
 }
 
 # Additional packages (root-image)
@@ -28,7 +28,7 @@ make_packages() {
 make_setup_mkinitcpio() {
    if [[ ! -e ${work_dir}/build.${FUNCNAME} ]]; then
         local _hook
-        for _hook in archiso archiso_shutdown archiso_pxe_common archiso_pxe_nbd archiso_loop_mnt; do
+        for _hook in archiso archiso_shutdown archiso_pxe_common archiso_pxe_nbd archiso_pxe_curl archiso_loop_mnt; do
             cp /lib/initcpio/hooks/${_hook} ${work_dir}/root-image/lib/initcpio/hooks
             cp /lib/initcpio/install/${_hook} ${work_dir}/root-image/lib/initcpio/install
         done
diff --git a/configs/releng/mkinitcpio.conf b/configs/releng/mkinitcpio.conf
index eb0a68a..6387982 100644
--- a/configs/releng/mkinitcpio.conf
+++ b/configs/releng/mkinitcpio.conf
@@ -1,2 +1,2 @@
-HOOKS="base udev memdisk archiso_shutdown archiso archiso_loop_mnt archiso_pxe_common archiso_pxe_nbd pata scsi sata virtio usb fw pcmcia filesystems usbinput"
+HOOKS="base udev memdisk archiso_shutdown archiso archiso_loop_mnt archiso_pxe_common archiso_pxe_nbd archiso_pxe_curl pata scsi sata virtio usb fw pcmcia filesystems usbinput"
 COMPRESSION="xz"
diff --git a/configs/releng/packages.i686 b/configs/releng/packages.i686
index 7b66e41..1f5075f 100644
--- a/configs/releng/packages.i686
+++ b/configs/releng/packages.i686
@@ -2,7 +2,6 @@ aif
 b43-fwcutter
 btrfs-progs-unstable
 crda
-curl
 ddrescue
 dhclient
 dialog
diff --git a/configs/releng/packages.x86_64 b/configs/releng/packages.x86_64
index 7b66e41..1f5075f 100644
--- a/configs/releng/packages.x86_64
+++ b/configs/releng/packages.x86_64
@@ -2,7 +2,6 @@ aif
 b43-fwcutter
 btrfs-progs-unstable
 crda
-curl
 ddrescue
 dhclient
 dialog