archbuild: add architecture-specific mount config

config path: @pkgdatadir@/mount.d/${arch}

config format:
Each line will start with 'ro' and 'rw' will be used, other lines will
be ignore, rest of line is out/path:in/path. e.g.

```
ro /some/path:/proc/cpuinfo
rw /some/some/path:/var/cache/pacman/pkg
```

For example, in the RISC-V port, if we use qemu-user to build, we need
to pass a parameter to makechrootpkg to map a correct /proc/cpuinfo, so
that software that relies on /proc/cpuinfo to obtain information can be
built normally.

Signed-off-by: Celeste Liu <CoelacanthusHex@gmail.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/archbuild.in b/src/archbuild.in
index e6cf19a..ba3ba94 100644
--- a/src/archbuild.in
+++ b/src/archbuild.in
@@ -23,6 +23,22 @@ if [[ -f "@pkgdatadir@/setarch-aliases.d/${arch}" ]]; then
 else
 	set_arch="${arch}"
 fi
+
+# Architecture-specific Mount
+arch_mounts=()
+if [[ -f "@pkgdatadir@/mount.d/${arch}" ]]; then
+	mapfile -t arch_mounts < "@pkgdatadir@/mount.d/${arch}"
+fi
+for arch_mount in "${arch_mounts[@]}"; do
+	if [[ $arch_mount = rw* ]]; then
+		arch_mount=${arch_mount#rw }
+		in_array "$arch_mount" "${makechrootpkg_args[@]}" || makechrootpkg_args+=("-d" "$arch_mount")
+	elif [[ $arch_mount = ro* ]]; then
+		arch_mount=${arch_mount#ro }
+		in_array "$arch_mount" "${makechrootpkg_args[@]}" || makechrootpkg_args+=("-D" "$arch_mount")
+	fi
+done
+
 chroots='/var/lib/archbuild'
 clean_first=false