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Simplify patch

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This commit is contained in:
hellekin 2015-02-08 19:50:52 -03:00
parent a5ab84fdac
commit 02dead6c9d
1 changed files with 9 additions and 36 deletions
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@ -282,8 +282,15 @@ _tmp_create() {
# Return 0 if it is an encrypted block device
_is_encrypted_block() {
local b=$1 # Path to a block device
local s="" # lsblk option -s (if available)
sudo lsblk -s -o TYPE -n $b 2>/dev/null \
# Issue #163
# lsblk --inverse appeared in util-linux 2.22
# but --version is not consistent...
lsblk --help | grep -q '\-\-inverse'
[[ $? -eq 0 ]] && s="--inverse"
sudo lsblk $s -o type -n $b 2>/dev/null \
| egrep -q '^crypt$'
return $?
@ -306,42 +313,11 @@ _ensure_safe_swap() {
_message "An active swap partition is detected..."
# Issue #163
# lsblk --inverse appeared in util-linux 2.22
# but --version is not consistent...
local bug_163=0
lsblk --help | grep -q '\-\-inverse'
if [[ $? -eq 0 ]]; then
for s in $=swaps; do
{ _is_encrypted_block $s } \
&& { r=2 } || { r=1; break }
done
else
# Use legacy code that does not detect plain swaps on
# encrypted volumes. On such systems -f must be used.
bug_163=1
for s in $=swaps; do
bone=$(sudo file $s)
if [[ "$bone" =~ "swap file" ]]; then
# It's a regular (unencrypted) swap file
r=1
break
elif [[ "$bone" =~ "symbolic link" ]]; then
# Might link to a block
r=1
[[ "/dev/mapper" == "${s%/*}" ]] || { break }
is_crypt=$(sudo dmsetup status "$s" | awk '/crypt/ {print $3}')
[[ $is_crypt == "crypt" ]] && { r=2 }
elif [[ "$bone" =~ "block special" ]]; then
# It's a block
r=1
is_crypt=`sudo dmsetup status "$s" | awk '/crypt/ {print $3}'`
[[ $is_crypt == "crypt" ]] && { r=2 } || { break }
fi
done
fi
if [[ $r -eq 2 ]]; then
@ -350,11 +326,8 @@ _ensure_safe_swap() {
_warning "This poses a security risk."
_warning "You can deactivate all swap partitions using the command:"
_warning " swapoff -a"
_warning "[#163] I may not detect plain swaps on an encrypted volume."
_warning "But if you want to proceed like this, use the -f (force) flag."
if [[ $bug_163 -eq 1 ]]; then
_warning "[#163] I cannot detect plain swaps on an encrypted volume."
_warning "[#163] Use -f, or upgrade util-linux to 2.22+."
fi
fi
return $r