mkinitcpio: insist that /dev and /proc be mounted

This avoids errors with process substitutions in chroots, among other
things. It's important that /proc be checked first as /etc/mtab might be
a link to /proc/self/mounts.

Signed-off-by: Dave Reisner <dreisner@archlinux.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/mkinitcpio b/mkinitcpio
index 72e7ec8..d8ea31f 100755
--- a/mkinitcpio
+++ b/mkinitcpio
@@ -156,6 +156,10 @@ if [[ -t 2 ]] && (( COLOR )); then
 fi
 readonly NC BOLD BLUE GREEN RED YELLOW
 
+# insist that /proc and /dev be mounted (important for chroots)
+mountpoint -q /proc || die "/proc must be mounted!"
+mountpoint -q /dev || die "/dev must be mounted!"
+
 if [[ $BASEDIR ]]; then
     # resolve the path. it might be a relative path and/or contain symlinks
     if ! pushd "$BASEDIR" &>/dev/null; then