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authorThomas Bächler <thomas@archlinux.org>2011-04-14 22:38:14 +0200
committerThomas Bächler <thomas@archlinux.org>2011-04-14 23:22:10 +0200
commit01b2f556af1a93dcf9c79f8cbfeabfc5fced8a68 (patch)
treec8213464d2ccddadeacd7cbe2a01642677e11687 /init_functions
parent8c59faaf8e8d159854426cba144f0c8512f2ca5c (diff)
downloadmkinitcpio-01b2f556af1a93dcf9c79f8cbfeabfc5fced8a68.tar.gz
mkinitcpio-01b2f556af1a93dcf9c79f8cbfeabfc5fced8a68.tar.xz
Rewrite parse_cmdline (again)
This should properly handle all ugly characters in values, omit settings any forbidden variable names and take care of double-quoted values with spaces in them. This should finally fix FS#23467, FS#22080 and FS#13900.
Diffstat (limited to 'init_functions')
-rw-r--r--init_functions59
1 files changed, 38 insertions, 21 deletions
diff --git a/init_functions b/init_functions
index fd5bbb6..be3599e 100644
--- a/init_functions
+++ b/init_functions
@@ -31,27 +31,44 @@ launch_interactive_shell() {
}
parse_cmdline() {
- eval set -- $(cat /proc/cmdline)
- for cmd in "$@"; do
- case "${cmd}" in
- \#*) break ;; # ignore everything after a # in the commandline
- # The kernel passes those to the kernel on its own
- [0123456Ss]) ;;
- [0-9]*) ;;
- single) ;;
- rw) readwrite="yes" ;;
- ro) readwrite="no" ;;
- # only export stuff that does work with ash :)
- *=*) rhs="$(echo "${cmd}" | cut -d= -f2-)"
- cmd="$(echo "${cmd}" | cut -d= -f1 | sed 's|\.|_|g')"
- cmd="$(echo "${cmd}" | sed 's|-|_|g')=\"${rhs}\""
- (echo "${cmd}" | grep -qe '^[0-9]') || eval "${cmd}"
- ;;
- *) cmd="$(echo "${cmd}" | sed 's|\.|_|g')"
- cmd="$(echo "${cmd}" | sed 's|-|_|g')"
- (echo "${cmd}" | grep -qe '^[0-9]') || eval "${cmd}=y"
- ;;
- esac
+ local w in_quotes lhs rhs
+ in_quotes=0
+ for w in $(cat /proc/cmdline); do
+ if [ ${in_quotes} -eq 0 ]; then
+ case "${w}" in
+ \#*) break ;; # ignore everything after a # in the commandline
+ # The kernel passes those to init on its own
+ [0123456Ss]) ;;
+ single) ;;
+ rw) readwrite="yes" ;;
+ ro) readwrite="no" ;;
+ # only export stuff that does work with ash :)
+ *=*) rhs="$(echo "${w}" | cut -d= -f2-)"
+ lhs="$(echo "${w}" | cut -d= -f1 | sed 's|\.|_|g;s|-|_|g;')"
+ if [ "${rhs:0:1}" = "\"" ]; then
+ if [ "${rhs:$((${#rhs}-1))}" = "\"" ]; then
+ rhs="${rhs:1:$((${#rhs}-2))}"
+ else
+ rhs="${rhs:1}"
+ in_quotes=1
+ continue
+ fi
+ fi
+ (echo "${lhs}" | grep -qe '^[0-9]' -e '[^a-zA-Z0-9_]') || eval ${lhs}=\${rhs}
+ ;;
+ *) lhs="$(echo "${w}" | sed 's|\.|_|g;s|-|_|g;')"
+ (echo "${lhs}" | grep -qe '^[0-9]' -e '[^a-zA-Z0-9_]') || eval ${lhs}=y
+ ;;
+ esac
+ else
+ if [ "${w:$((${#w}-1))}" = "\"" ]; then
+ rhs="${rhs} ${w:0:$((${#w}-1))}"
+ in_quotes=0
+ (echo "${lhs}" | grep -qe '^[0-9]' -e '[^a-zA-Z0-9_]') || eval ${lhs}=\${rhs}
+ else
+ rhs="${rhs} ${w}"
+ fi
+ fi
done
}