77c9114cb0
The content of this branch was automatically imported from Fedora ELN with the following as its source: https://src.fedoraproject.org/rpms/dracut#99c74373eee952f26c7d256f12c024fe29397ae6
110 lines
3.6 KiB
Diff
110 lines
3.6 KiB
Diff
From 8e1a4dc5f8a777fc718db490414ffdc9dc755f66 Mon Sep 17 00:00:00 2001
|
|
From: Jonas Witschel <diabonas@archlinux.org>
|
|
Date: Sat, 18 Apr 2020 14:55:41 +0200
|
|
Subject: [PATCH] dracut-lib.sh: quote variables in parameter expansion
|
|
patterns
|
|
|
|
According to POSIX.1-2017, 2.6.2 Parameter Expansion:
|
|
|
|
${parameter%[word]} [...] The word shall be expanded to produce a
|
|
pattern.
|
|
|
|
This means if word contains variables that itself contain special
|
|
characters like asterisks or backslashes, these are treated as pattern
|
|
characters unless the variable is quoted. Try e.g. the following example
|
|
in bash, dash or (busybox) ash:
|
|
|
|
i='a\c'; j='\'; echo "${i%$j*}"
|
|
|
|
This prints "a\c" because "$j*" is expanded to "\*", escaping the
|
|
asterisk. In contrast,
|
|
|
|
i='a\c'; j='\'; echo "${i%"$j"*}"
|
|
|
|
produces the expected result "a" because the backslash is not specially
|
|
treated any more after quoting.
|
|
|
|
The quotes that this commit adds have been previously removed in commit
|
|
f9c96cf56fed390841eac05c43826e62014c9188, citing issues with busybox
|
|
hush without further specifying the actual error. I tested a recent
|
|
busybox build (upstream commit 9aa751b08ab03d6396f86c3df77937a19687981b)
|
|
and couldn't find any problems. Note that the above example always
|
|
produces "a\c" in hush regardless of quoting $j, making hush unsuitable
|
|
for use with dracut, but using quotes in parameter expansions generally
|
|
works.
|
|
|
|
The unquoted variables break the "rd.luks.uuid/name" kernel command line
|
|
options in dracut 050 because
|
|
|
|
str_replace "$luksname" '\' '\\'
|
|
|
|
in modules.d/90crypt/parse-crypt.sh is not able to escape the
|
|
backslashes any more, see GH-723, GH-727: backslashes in the
|
|
systemd-cryptsetup@.service unit name stay unescaped for use in udev
|
|
(cf. commit 0f6d93eb9d63695a64002ec8b0421fbc9fc8a7a3), leading to
|
|
failures in starting the unit.
|
|
|
|
This partially reverts commit f9c96cf56fed390841eac05c43826e62014c9188.
|
|
---
|
|
modules.d/99base/dracut-lib.sh | 16 ++++++++--------
|
|
1 file changed, 8 insertions(+), 8 deletions(-)
|
|
|
|
diff --git a/modules.d/99base/dracut-lib.sh b/modules.d/99base/dracut-lib.sh
|
|
index c53cd13b..c57523d3 100755
|
|
--- a/modules.d/99base/dracut-lib.sh
|
|
+++ b/modules.d/99base/dracut-lib.sh
|
|
@@ -24,7 +24,7 @@ debug_on() {
|
|
|
|
# returns OK if $1 contains literal string $2 (and isn't empty)
|
|
strstr() {
|
|
- [ "${1##*$2*}" != "$1" ]
|
|
+ [ "${1##*"$2"*}" != "$1" ]
|
|
}
|
|
|
|
# returns OK if $1 matches (completely) glob pattern $2
|
|
@@ -43,18 +43,18 @@ strglobin() {
|
|
|
|
# returns OK if $1 contains literal string $2 at the beginning, and isn't empty
|
|
str_starts() {
|
|
- [ "${1#$2*}" != "$1" ]
|
|
+ [ "${1#"$2"*}" != "$1" ]
|
|
}
|
|
|
|
# returns OK if $1 contains literal string $2 at the end, and isn't empty
|
|
str_ends() {
|
|
- [ "${1%*$2}" != "$1" ]
|
|
+ [ "${1%*"$2"}" != "$1" ]
|
|
}
|
|
|
|
trim() {
|
|
local var="$*"
|
|
- var="${var#${var%%[![:space:]]*}}" # remove leading whitespace characters
|
|
- var="${var%${var##*[![:space:]]}}" # remove trailing whitespace characters
|
|
+ var="${var#"${var%%[![:space:]]*}"}" # remove leading whitespace characters
|
|
+ var="${var%"${var##*[![:space:]]}"}" # remove trailing whitespace characters
|
|
printf "%s" "$var"
|
|
}
|
|
|
|
@@ -108,9 +108,9 @@ str_replace() {
|
|
local out=''
|
|
|
|
while strstr "${in}" "$s"; do
|
|
- chop="${in%%$s*}"
|
|
+ chop="${in%%"$s"*}"
|
|
out="${out}${chop}$r"
|
|
- in="${in#*$s}"
|
|
+ in="${in#*"$s"}"
|
|
done
|
|
echo "${out}${in}"
|
|
}
|
|
@@ -396,7 +396,7 @@ splitsep() {
|
|
while [ -n "$str" -a "$#" -gt 1 ]; do
|
|
tmp="${str%%$sep*}"
|
|
eval "$1='${tmp}'"
|
|
- str="${str#$tmp}"
|
|
+ str="${str#"$tmp"}"
|
|
str="${str#$sep}"
|
|
shift
|
|
done
|
|
|