install-darwin: fix mount permission edge-case

Fixes #6122, which reports a problem with trying to run the installer
under another user (probably: user is not the disk "owner" and thus
can't mount the volume).
This commit is contained in:
Travis A. Everett 2022-02-18 23:15:37 -06:00
parent 9bc03adbba
commit 1fd127a068

View file

@ -685,22 +685,27 @@ encrypt_volume() {
local volume_uuid="$1" local volume_uuid="$1"
local volume_label="$2" local volume_label="$2"
local password local password
task "Encrypt the Nix volume" >&2
# Note: mount/unmount are late additions to support the right order # Note: mount/unmount are late additions to support the right order
# of operations for creating the volume and then baking its uuid into # of operations for creating the volume and then baking its uuid into
# other artifacts; not as well-trod wrt to potential errors, race # other artifacts; not as well-trod wrt to potential errors, race
# conditions, etc. # conditions, etc.
/usr/sbin/diskutil mount "$volume_label" _sudo "to mount your Nix volume for encrypting" \
/usr/sbin/diskutil mount "$volume_label"
password="$(/usr/bin/xxd -l 32 -p -c 256 /dev/random)" password="$(/usr/bin/xxd -l 32 -p -c 256 /dev/random)"
_sudo "to add your Nix volume's password to Keychain" \ _sudo "to add your Nix volume's password to Keychain" \
/usr/bin/security -i <<EOF /usr/bin/security -i <<EOF
add-generic-password -a "$volume_label" -s "$volume_uuid" -l "$volume_label encryption password" -D "Encrypted volume password" -j "Added automatically by the Nix installer for use by $NIX_VOLUME_MOUNTD_DEST" -w "$password" -T /System/Library/CoreServices/APFSUserAgent -T /System/Library/CoreServices/CSUserAgent -T /usr/bin/security "/Library/Keychains/System.keychain" add-generic-password -a "$volume_label" -s "$volume_uuid" -l "$volume_label encryption password" -D "Encrypted volume password" -j "Added automatically by the Nix installer for use by $NIX_VOLUME_MOUNTD_DEST" -w "$password" -T /System/Library/CoreServices/APFSUserAgent -T /System/Library/CoreServices/CSUserAgent -T /usr/bin/security "/Library/Keychains/System.keychain"
EOF EOF
builtin printf "%s" "$password" | _sudo "to encrypt your Nix volume" \ builtin printf "%s" "$password" | _sudo "to actually encrypt your Nix volume" \
/usr/sbin/diskutil apfs encryptVolume "$volume_label" -user disk -stdinpassphrase /usr/sbin/diskutil apfs encryptVolume "$volume_label" -user disk -stdinpassphrase
/usr/sbin/diskutil unmount force "$volume_label" _sudo "to unmount the encrypted volume" \
/usr/sbin/diskutil unmount force "$volume_label"
} }
create_volume() { create_volume() {