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run_qemu.sh: new postinst_append_if_not_found() #207

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merged 1 commit into from
May 19, 2025
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run_qemu.sh: new postinst_append_if_not_found() #207

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40 changes: 22 additions & 18 deletions run_qemu.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -1206,14 +1206,7 @@ check_ndctl_dir()

prepare_ndctl_build()
{
local postinst=mkosi.postinst
# Until mkosi v18 (commit a28c268996fa), only one postinst script is
# supported. So, we concatenate. One drawback: you must manually delete
# qbuild/mkosi.postinst when changing this code below.
if test -e "$postinst" && grep -q 9b626c647037bc8a "$postinst"; then
return
fi
cat <<- 'EOF' >> "$postinst"
cat <<- 'EOF' | postinst_append_if_not_found 9b626c647037bc8a
#!/bin/sh
# v14: 'systemd-nspawn"; v15: "mkosi"
printf 'container=%s\n' "$container"
Expand All @@ -1227,24 +1220,35 @@ prepare_ndctl_build()
mkosi-chroot /root/reinstall_ndctl.sh
fi
EOF
chmod +x "$postinst"
}

prepare_shadow_autologin()
{
local postinst=mkosi.postinst
# Until mkosi v18 (commit a28c268996fa), only one postinst script is
# supported. So, we concatenate. One drawback: you must manually delete
# qbuild/mkosi.postinst when changing this code below.
if test -e "$postinst" && grep -q shadow_autologin.sh "$postinst"; then
return 0
fi
cat <<- EOF >> "$postinst"
cat <<- EOF | postinst_append_if_not_found shadow_autologin.sh
#!/bin/sh
trusted_console=$console mkosi-chroot /root/rq/shadow_autologin.sh
EOF
chmod +x "$postinst"
}

# Append stdin to the mkosi.postinst script if the $1 argument
# "watermark" is not already found there. Otherwise discard stdin.
# WARNING: this function adds comments with a '# ' prefix.
postinst_append_if_not_found()
{
local watermark="$1"
local _outputf=mkosi.postinst
# Until mkosi v18 (commit a28c268996fa), only one postinst script is
# supported. So, we concatenate. One drawback: you must manually delete
# qbuild/mkosi.postinst when changing run_qemu.sh
if test -e "$_outputf" && grep -q -e "$watermark" "$_outputf"; then
cat >/dev/null
return
fi
{ cat
generatedfrom_header "postinst_append_if_not_found $watermark"
printf '### -----------------------\n\n'
} >> "$_outputf"
chmod +x "$_outputf"
}

setup_gcp_tweaks()
Expand Down