pushed
On 10.10.2011 23:58, Michal Soltys wrote:
> This patch replaces:
>
> - {var}>... redirections with functionally identical eval construct +
> explicit FDs
> - ^^ and ,, case modifiers with temporary shopt
>
> This allows us to lower minimum required bash version
> to at least 3.1 (with current code).
>
> Signed-off-by: Michal Soltys <[email protected]>
> ---
> dracut-functions | 11 +++++++----
> modules.d/10i18n/module-setup.sh | 8 +++++---
> modules.d/40network/module-setup.sh | 19 ++++++++++++-------
> modules.d/90kernel-modules/module-setup.sh | 19 ++++++++++++-------
> 4 files changed, 36 insertions(+), 21 deletions(-)
>
> diff --git a/dracut-functions b/dracut-functions
> index ce593c9..1ef5269 100755
> --- a/dracut-functions
> +++ b/dracut-functions
> @@ -821,10 +821,11 @@ install_kmod_with_fw() {
> # It will be passed the full path to the found kernel module
> # $2 = module to get dependencies for
> # rest of args = arguments to modprobe
> +# _fderr specifies FD passed from surrounding scope
> for_each_kmod_dep() {
> local _func=$1 _kmod=$2 _cmd _modpath _options _found=0
> shift 2
> - modprobe "$@" --ignore-install --show-depends $_kmod 2>&$modprobe_stderr
> | (
> + modprobe "$@" --ignore-install --show-depends $_kmod 2>&${_fderr} | (
> while read _cmd _modpath _options; do
> [[ $_cmd = insmod ]] || continue
> $_func ${_modpath} || exit $?
> @@ -885,6 +886,8 @@ find_kernel_modules () {
> # install kernel modules along with all their dependencies.
> instmods() {
> [[ $no_kernel = yes ]] && return
> + # called [sub]functions inherit _fderr
> + local _fderr=9
>
> function inst1mod() {
> local _mod="$1"
> @@ -949,9 +952,9 @@ instmods() {
> return $_ret
> }
>
> - # Capture all stderr from modprobe onto a new fd $modprobe_stderr,
> - # and pipe it into egrep. See REDIRECTION in bash manpage.
> - ( instmods_1 "$@" ) {modprobe_stderr}>&1 \
> + # Capture all stderr from modprobe to _fderr. We could use {var}>...
> + # redirections, but that would make dracut require bash4 at least.
> + eval "( instmods_1 \"\$@\" ) ${_fderr}>&1" \
> | egrep -v 'FATAL: Module .* not found.' | derror
> return $?
> }
> diff --git a/modules.d/10i18n/module-setup.sh
> b/modules.d/10i18n/module-setup.sh
> index 5c09100..6248607 100755
> --- a/modules.d/10i18n/module-setup.sh
> +++ b/modules.d/10i18n/module-setup.sh
> @@ -150,22 +150,24 @@ install() {
> inst_simple ${kbddir}/unimaps/${FONT_UNIMAP}.uni
> fi
>
> + shopt -q -s nocasematch
> if [[ ${UNICODE} ]]
> then
> - if [[ ${UNICODE^^} = YES || ${UNICODE} = 1 ]]
> + if [[ ${UNICODE} = YES || ${UNICODE} = 1 ]]
> then
> UNICODE=1
> - elif [[ ${UNICODE^^} = NO || ${UNICODE} = 0 ]]
> + elif [[ ${UNICODE} = NO || ${UNICODE} = 0 ]]
> then
> UNICODE=0
> else
> UNICODE=''
> fi
> fi
> - if [[ ! ${UNICODE} && ${LANG^^} =~ .*\.UTF-?8 ]]
> + if [[ ! ${UNICODE} && ${LANG} =~ .*\.UTF-?8 ]]
> then
> UNICODE=1
> fi
> + shopt -q -u nocasematch
>
> mksubdirs ${initdir}${I18N_CONF}
> mksubdirs ${initdir}${VCONFIG_CONF}
> diff --git a/modules.d/40network/module-setup.sh
> b/modules.d/40network/module-setup.sh
> index 03684f1..eb7ef9b 100755
> --- a/modules.d/40network/module-setup.sh
> +++ b/modules.d/40network/module-setup.sh
> @@ -27,6 +27,8 @@ installkernel() {
> net_module_filter() {
> local _net_drivers='eth_type_trans|register_virtio_device'
> local _unwanted_drivers='/(wireless|isdn|uwb)/'
> + # subfunctions inherit following FDs
> + local _merge=8 _side2=9
> function nmf1() {
> local _fname _fcont
> while read _fname; do
> @@ -40,14 +42,17 @@ installkernel() {
> && echo "$_fname"
> done
> }
> + function rotor() {
> + local _f1 _f2
> + while read _f1; do
> + echo "$_f1"
> + if read _f2; then
> + echo "$_f2" 1>&${_side2}
> + fi
> + done | nmf1 1>&${_merge}
> + }
> # Use two parallel streams to filter alternating modules.
> - local merge side2
> - ( ( local _f1 _f2
> - while read _f1; do echo "$_f1"
> - if read _f2; then echo "$_f2" 1>&${side2}; fi
> - done \
> - | nmf1 1>&${merge} ) {side2}>&1 \
> - | nmf1 ) {merge}>&1
> + eval "( ( rotor ) ${_side2}>&1 | nmf1 ) ${_merge}>&1"
> }
>
> find_kernel_modules_by_path drivers/net | net_module_filter | instmods
> diff --git a/modules.d/90kernel-modules/module-setup.sh
> b/modules.d/90kernel-modules/module-setup.sh
> index 09bd87e..6e3a918 100755
> --- a/modules.d/90kernel-modules/module-setup.sh
> +++ b/modules.d/90kernel-modules/module-setup.sh
> @@ -11,6 +11,8 @@ installkernel() {
> }
> block_module_filter() {
> local
> _blockfuncs='ahci_init_controller|ata_scsi_ioctl|scsi_add_host|blk_init_queue|register_mtd_blktrans|scsi_esp_register|register_virtio_device'
> + # subfunctions inherit following FDs
> + local _merge=8 _side2=9
> function bmf1() {
> local _f
> while read _f; do case "$_f" in
> @@ -19,14 +21,17 @@ installkernel() {
> esac
> done
> }
> + function rotor() {
> + local _f1 _f2
> + while read _f1; do
> + echo "$_f1"
> + if read _f2; then
> + echo "$_f2" 1>&${_side2}
> + fi
> + done | bmf1 1>&${_merge}
> + }
> # Use two parallel streams to filter alternating modules.
> - local merge side2
> - ( ( local _f1 _f2
> - while read _f1; do echo "$_f1"
> - if read _f2; then echo "$_f2" 1>&${side2}; fi
> - done \
> - | bmf1 1>&${merge} ) {side2}>&1 \
> - | bmf1 ) {merge}>&1
> + eval "( ( rotor ) ${_side2}>&1 | bmf1 ) ${_merge}>&1"
> }
> hostonly='' instmods sr_mod sd_mod scsi_dh scsi_dh_rdac scsi_dh_emc
> hostonly='' instmods pcmcia firewire-ohci
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