profile_prepare_install(): New function

profile_installer_type() will be the first caller of
_prof_proteanos_get_platforms() to be called, but it will be called in a
subshell.  As a result, _prof_proteanos_get_platforms() would be called
twice.

To solve this, factor out _prof_proteanos_get_platforms() calls from
other functions, making them pure (subshell-safe).

3 files changed, 21 insertions, 24 deletions

diff --git a/src/install.sh b/src/install.sh
index e3e9819..c5d3a5a 100644
--- a/src/install.sh
+++ b/src/install.sh
@@ -337,6 +337,7 @@ install_system()
 	if [ "x${mirror}" = 'x' ]; then
 		mirror="$(profile_select_mirror)"
 	fi
+	profile_prepare_install "${mirror}" "${suite}"
 
 	if ! profile_validate_archplat "${mirror}" "${arch}" "${plat}" \
 			"${suite}"; then
diff --git a/src/profile.sh b/src/profile.sh
index 744ddef..582166c 100644
--- a/src/profile.sh
+++ b/src/profile.sh
@@ -70,10 +70,10 @@ profile_detect()
 }
 
 for func in normalize_suite detect_arch default_plat select_mirror \
-		installer_type validate_archplat opkg_state_dir opkg_conf_file \
-		feeds get_cert_url get_root_key dep_fields include_pkg \
-		get_fstab file_systems_mounted bind_mount bind_umount \
-		configure_system_native configure_system_foreign find_kernel \
-		make_initramfs; do
+		prepare_install installer_type validate_archplat \
+		opkg_state_dir opkg_conf_file feeds get_cert_url get_root_key \
+		dep_fields include_pkg get_fstab file_systems_mounted \
+		bind_mount bind_umount configure_system_native \
+		configure_system_foreign find_kernel make_initramfs; do
 	eval "profile_${func}() { \"prof_\${_profile}_${func}\" \"\${@}\"; }"
 done
diff --git a/src/profile/proteanos.sh b/src/profile/proteanos.sh
index 0f34f5d..e208464 100644
--- a/src/profile/proteanos.sh
+++ b/src/profile/proteanos.sh
@@ -77,20 +77,6 @@ _prof_proteanos_platforms_paragraph()
 		)\"\${_prof_proteanos_platforms_sections}\""
 }
 
-_prof_proteanos_get_platforms()
-{
-	local mirror="${1}"
-	local suite="${2}"
-	shift 2
-
-	[ -n "${_prof_proteanos_platforms}" ] && return
-
-	parse_control - _prof_proteanos_platforms_field \
-		_prof_proteanos_platforms_paragraph 0<<-EOF
-		$(${WGET} -q -O - -- "${mirror}/feeds/${suite}/Platforms")
-		EOF
-}
-
 prof_proteanos_detect_root()
 {
 	local root="${1}"
@@ -162,6 +148,20 @@ prof_proteanos_select_mirror()
 	printf '%s\n' "${mirrors}" | sed -n "${mirror_num}p"
 }
 
+prof_proteanos_prepare_install()
+{
+	local mirror="${1}"
+	local suite="${2}"
+	shift 2
+
+	[ -n "${_prof_proteanos_platforms}" ] && return
+
+	parse_control - _prof_proteanos_platforms_field \
+		_prof_proteanos_platforms_paragraph 0<<-EOF
+		$(${WGET} -q -O - -- "${mirror}/feeds/${suite}/Platforms")
+		EOF
+}
+
 prof_proteanos_installer_type()
 {
 	local mirror="${1}"
@@ -174,13 +174,12 @@ prof_proteanos_installer_type()
 	local archplat=
 	local installer_type=
 
-	_prof_proteanos_get_platforms "${mirror}" "${suite}"
 	arch_clean="$(printf '%s' "${arch}" | tr -c '[a-z0-9/]' '_')"
 	plat_clean="$(printf '%s' "${plat}" | tr -c '[a-z0-9/]' '_')"
 	archplat="${arch_clean}__${plat_clean}"
 	eval "installer_type=\"\${_prof_proteanos_archplat_type_${archplat}}\""
 
-	return "${installer_type}"
+	printf '%s' "${installer_type}"
 }
 
 prof_proteanos_validate_archplat()
@@ -192,8 +191,6 @@ prof_proteanos_validate_archplat()
 	shift 4
 	local archplat=
 
-	_prof_proteanos_get_platforms "${mirror}" "${suite}"
-
 	case " ${_prof_proteanos_platforms} " in
 		*" ${arch}/${plat} "*)
 			return 0
@@ -231,7 +228,6 @@ prof_proteanos_feeds()
 	local p=
 	local s=
 
-	_prof_proteanos_get_platforms "${mirror}" "${suite}"
 	arch_clean="$(printf '%s' "${arch}" | tr -c '[a-z0-9/]' '_')"
 	plat_clean="$(printf '%s' "${plat}" | tr -c '[a-z0-9/]' '_')"
 	archplat="${arch_clean}__${plat_clean}"