grub2/grub2-efi-xen-cfg-unquote.patch
Michael Chang a3bdb368a2 Accepting request 904721 from home:michael-chang:grub:2.06
- Version bump to 2.06
  * rediff
    - 0001-add-support-for-UEFI-network-protocols.patch
    - 0002-net-read-bracketed-ipv6-addrs-and-port-numbers.patch
    - 0003-Make-grub_error-more-verbose.patch
    - 0003-bootp-New-net_bootp6-command.patch
    - 0005-grub.texi-Add-net_bootp6-doument.patch
    - 0006-bootp-Add-processing-DHCPACK-packet-from-HTTP-Boot.patch
    - 0006-efi-Set-image-base-address-before-jumping-to-the-PE-.patch
    - 0008-efinet-Setting-DNS-server-from-UEFI-protocol.patch
    - 0046-squash-verifiers-Move-verifiers-API-to-kernel-image.patch
    - grub-install-force-journal-draining-to-ensure-data-i.patch
    - grub2-btrfs-01-add-ability-to-boot-from-subvolumes.patch
    - grub2-diskfilter-support-pv-without-metadatacopies.patch
    - grub2-efi-HP-workaround.patch
    - grub2-efi-xen-cfg-unquote.patch
    - grub2-efi-xen-chainload.patch
    - grub2-fix-menu-in-xen-host-server.patch
    - grub2-gfxmenu-support-scrolling-menu-entry-s-text.patch
    - grub2-install-remove-useless-check-PReP-partition-is-empty.patch
    - grub2-lvm-allocate-metadata-buffer-from-raw-contents.patch
    - grub2-mkconfig-default-entry-correction.patch
    - grub2-pass-corret-root-for-nfsroot.patch
    - grub2-s390x-03-output-7-bit-ascii.patch
    - grub2-s390x-04-grub2-install.patch
    - grub2-secureboot-install-signed-grub.patch
    - grub2-setup-try-fs-embed-if-mbr-gap-too-small.patch
    - use-grub2-as-a-package-name.patch
  * update by patch squashed:
    - 0001-Add-support-for-Linux-EFI-stub-loading-on-aarch64.patch

OBS-URL: https://build.opensuse.org/request/show/904721
OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=386
2021-07-08 09:03:14 +00:00

93 lines
2.7 KiB
Diff

From: Petr Tesarik <ptesarik@suse.cz>
Subject: Unquote parameters written to Xen EFI config file
References: bsc#900418
Patch-mainline: not yet
The GRUB_CMDLINE_* value is copied verbatim to grub.conf, so it is first
parsed by GRUB2 before being passed down to the kernel. OTOH Xen EFI loader
takes the config file options verbatim. This means that any special GRUB2
syntax must be evaluated when generating that file.
Of course, some things are not even possible (e.g. substituting GRUB runtime
variables), but let's call them known limitations.
Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
---
util/grub.d/20_linux_xen.in | 54 ++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 52 insertions(+), 2 deletions(-)
Index: grub-2.06~rc1/util/grub.d/20_linux_xen.in
===================================================================
--- grub-2.06~rc1.orig/util/grub.d/20_linux_xen.in
+++ grub-2.06~rc1/util/grub.d/20_linux_xen.in
@@ -137,6 +137,52 @@ else
is_efi=false
fi
+grub2_unquote ()
+{
+ awk '
+ BEGIN {
+ bare = "[^{}|&$;<> \t\n'\''\"\\\\]+"
+ esc = "\\\\."
+ id = "[[:alpha:]_][[:alnum:]_]*|[[:digit:]]+|[?#*@]"
+ var = "\\$("id")|\\$\\{("id")\\}"
+ dqesc = "\\\\[$\"\\\\]"
+ dqstr = "\\$?\"([^\"]|"var"|"dqesc")*\""
+ sqstr = "'\''[^'\'']*'\''"
+ pat = bare"|"esc"|"var"|"dqstr"|"sqstr
+ ORS = ""
+ }
+ {
+ patsplit($0, words, pat, sep)
+ print sep[0]
+ for (i in words) {
+ w = words[i]
+ if (w ~ /^\$?"/) {
+ # Double-quoted string
+ patsplit(w, segs, var"|"dqesc, ssep)
+ print ssep[0]
+ for (j in segs) {
+ if (segs[j] ~ /^\\/)
+ print substr(segs[j], 2)
+ print ssep[j]
+ }
+ } else if (w ~ /^'\''/) {
+ # Single-quoted string
+ print substr(w, 2, length(w)-2)
+ } else if (w ~ /^\\/) {
+ # Escape sequence
+ print substr(w, 2)
+ } else if (w ~ /^\$/) {
+ # Variable expansion
+ } else {
+ # Bare word
+ print w
+ }
+ print sep[i]
+ }
+ print "\n"
+ }'
+}
+
linux_entry ()
{
linux_entry_xsm "$@" false
@@ -205,11 +251,13 @@ linux_entry_xsm ()
else
section="failsafe.$section_count"
fi
+ xen_args_unq=$(echo $xen_args | grub2_unquote)
+ args_unq=$(echo $args | grub2_unquote)
cat <<-EOF >> $grub_dir/$xen_cfg
[$section]
- options=${xen_args}
- kernel=${basename} root=${linux_root_device_thisversion} ${args}
+ options=${xen_args_unq}
+ kernel=${basename} root=${linux_root_device_thisversion} ${args_unq}
ramdisk=${initrd_real}
EOF
message="$(gettext_printf "Loading Xen %s with Linux %s ..." ${xen_version} ${version})"