mirror of
https://github.com/SCST-project/scst.git
synced 2026-08-26 09:06:38 +00:00
Gleb Chesnokov
f788bfd0d6
Quote scalar arguments and use arrays for command option lists so paths and options retain their boundaries. Preserve intentional version-field splitting with narrow documented suppressions. Also handle GNU getopt output without losing quoted arguments and remove warnings about masked statuses, unused values and ambiguous test expressions.
620 lines
18 KiB
Bash
Executable File
620 lines
18 KiB
Bash
Executable File
#!/bin/bash
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set -o pipefail
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############################################################################
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#
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# Script for converting the SCST source tree as it exists in the Git
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# repository to a Linux kernel patch.
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#
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# Copyright (C) 2008-2020 Bart Van Assche <bvanassche@acm.org>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation, version 2
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# of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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############################################################################
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########################
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# Function definitions #
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########################
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# shellcheck source=./kernel-functions
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source "$(dirname "$0")/kernel-functions"
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function usage {
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echo "Usage: $0 [-d] [-h] [-n] [-p <dir>] [-s] [-u] <kernel version>"
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echo "where: "
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echo " -d - enable patch specialization debugging"
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echo " -h - show this text"
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echo " -n - do not delete code disabled via preprocessor statements"
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echo " -p - generate multiple patches instead of one big patch into"\
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"the specified directory."
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echo " -s - disable patch specialization."
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echo " -u - enables #define GENERATING_UPSTREAM_PATCH."
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}
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# Convert an existing patch.
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# $1: path of patch to be added.
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# $2: path in kernel tree of file to be patched.
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function add_patch {
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if [ ! -e "$1" ]; then
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echo "Error: could not find $1." >&2
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exit 1
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fi
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sed -e "s:^--- [^ ]*:--- linux-${kver}/$2:" \
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-e "s:^+++ [^ ]*:+++ linux-${kver}/$2:" \
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< "$1"
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}
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# Generate a patch for a file to be added to the kernel source tree, and strip
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# trailing whitespace from C source files while converting the file to patch
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# format.
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# $1: path of file to be added.
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# $2: path in kernel tree where file should be added.
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function add_file {
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local a b
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if [ ! -e "$1" ]; then
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echo "Error: could not find $1." >&2
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exit 1
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fi
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# Only include files that were not generated by the build process
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# -- skip *.mod.c.
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if [ "$1" = "${1%.mod.c}" ] && [ "$1" ]; then
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cat <<EOF
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diff -uprN linux-${kver}/$2 linux-${kver}/$2
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--- linux-${kver}/$2
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+++ linux-${kver}/$2
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@@ -0,0 +1,$(wc -l "$1" | { read -r a b; echo "$a"; echo "$b" >/dev/null; }) @@
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EOF
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# Insert a '+'-sign at the start of each line.
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sed -e 's/^/+/' < "$1" | \
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if [ "${replace_sbug_by_bug}" = "true" ]; then
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sed -e 's/sBUG(\([^)]*\)/BUG(\1/g' -e 's/sBUG_ON(\([^)]*\)/BUG_ON(\1/g'
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else
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cat
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fi \
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| \
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if [ "${2%.[ch]}" != "$2" ]; then
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# Make sure that labels (goto-targets) are left-aligned.
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sed -e 's/^ \([^ ]*:\)$/\1/'
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else
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cat
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fi
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fi
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}
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function add_empty_file {
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cat <<EOF
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diff -uprN linux-${kver}/$1 linux-${kver}/$1
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--- linux-${kver}/$1
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+++ linux-${kver}/$1
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@@ -0,0 +1,1 @@
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+
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EOF
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}
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# Run the script specialize_patch with appropriate options on the patch
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# passed via stdin and send the specialized patch to stdout.
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function specialize_patch {
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local ao
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# Split the kernel^distro^release triplet into positional parameters.
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# shellcheck disable=SC2086
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set -- ${1//^/ }
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local kver=$1
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local distro=$2
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local release=$3
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# Split the distribution release into major and minor components.
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# shellcheck disable=SC2086
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set -- ${release//./ }
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local releasevermajor="$1"
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local releaseverminor="$2"
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case "$distro" in
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CentOS|AlmaLinux|RockyLinux|Rocky)
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if [ -n "$releasevermajor" ]; then
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ao=(
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-v "RHEL_MAJOR=$releasevermajor"
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-v "RHEL_MINOR=$releaseverminor"
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-v "RHEL_RELEASE_CODE=$((releasevermajor * 256 +
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releaseverminor))"
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)
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fi
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;;
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UEK)
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ao=(-v UEK_KABI_RENAME=1)
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;;
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esac
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local kver3
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# Split the kernel release into numeric components.
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# shellcheck disable=SC2086
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set -- ${kver//[.-]/ }
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if [ -n "$3" ]; then
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kver3=$1.$2.$3
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else
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kver3=$1.$2
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fi
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if [ "${enable_specialize}" = "true" ]; then
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if [ "${generating_upstream_patch}" = "true" ]; then
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scripts/filter-trace-entry-exit
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else
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cat
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fi |
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"$(dirname "$0")/specialize-patch" \
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"${specialize_patch_options[@]}" \
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-v kernel_version="${kver3}" \
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-v SCST_IO_CONTEXT="${scst_io_context}" "${ao[@]}"
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else
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cat
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fi
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}
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# Read a patch from stdin, specialize it for kernel version ${full_kver}
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# and write the output either to stdout or to the file $1 (if not empty),
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# depending on the value of the variable ${multiple_patches}.
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function process_patch {
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local status tmppatch
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if [ "${multiple_patches}" = "true" ]; then
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if [ "$1" != "" ]; then
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if [ -e "${patchdir}/$1" ]; then
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echo "Warning: overwriting ${patchdir}/$1"
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fi
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tmppatch="$(/bin/mktemp)" || return $?
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specialize_patch "${full_kver}" >"${tmppatch}"
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status=$?
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if [ "${status}" -ne 0 ]; then
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rm -f "${tmppatch}"
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return "${status}"
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fi
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{
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if [ -e /usr/bin/diffstat ]; then
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awk 'BEGIN{h=1}/^diff/{h=0}/^---/{h=0}h!=0{print}' < "${tmppatch}"
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echo "---"
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diffstat "${tmppatch}"
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echo ""
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awk 'BEGIN{h=1}/^diff/{h=0}/^---/{h=0}h==0{print}' < "${tmppatch}"
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else
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cat "${tmppatch}"
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fi
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} \
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> "${patchdir}/$(basename "$1")"
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status=$?
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rm -f "${tmppatch}"
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return "${status}"
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else
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# echo "Discarded $(wc -l) lines."
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true
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fi
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else
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specialize_patch "${full_kver}"
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fi
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}
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# Returns 0 (true) if SCST core file "$1" should be added in a separate patch,
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# and 1 (false) if not.
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function in_separate_patch {
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echo "${source_files_in_separate_patch}" | grep -qE "^$1 | $1 | $1\$|^$1\$"
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}
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#########################
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# Argument verification #
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#########################
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debug_specialize="false"
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enable_specialize="true"
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generating_upstream_patch="false"
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multiple_patches="false"
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patchdir=""
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replace_sbug_by_bug="true"
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specialize_patch_options=(-v "delete_disabled_code=1")
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srpt="true"
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if [ ! -e scst ] || [ ! -e iscsi-scst ] || [ ! -e srpt ] ||
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[ ! -e scst_local ]; then
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echo "Please run this script from inside the SCST Git source tree."
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exit 1
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fi
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# shellcheck disable=SC2046
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set -- $(/usr/bin/getopt dhlmnp:su "$@")
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while [ "$1" != "${1#-}" ]
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do
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case "$1" in
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'-d') debug_specialize="true"; shift;;
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'-h') usage; exit 1;;
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'-l') shift;;
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'-n') specialize_patch_options=(-v "blank_deleted_code=1")
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shift
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;;
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'-p') multiple_patches="true"; patchdir="$2"; shift; shift;;
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'-s') enable_specialize="false"; shift;;
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'-u') generating_upstream_patch="true"; shift;;
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'--') shift;;
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*) usage; exit 1;;
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esac
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done
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if [ $# != 1 ]; then
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usage
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exit 1
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fi
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# Strip patch level from the kernel version number.
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full_kver="$1"
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check_kernel_version "$full_kver" || exit $?
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kver="$(kernel_version "${full_kver}")"
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krel=${full_kver/^*}
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# See also commit 89d9a567952b ("[SCSI] add support for per-host cmd pools";
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# v3.15).
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if kernel_version_lt "$kver" 3.18; then
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qla2x00t="true"
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qla2x00t_32gbit="false"
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else
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qla2x00t="false"
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qla2x00t_32gbit="true"
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fi
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if [ -e "scst/kernel/in-tree/Makefile.scst-${kver}" ]; then
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scst_makefile="Makefile.scst-${kver}"
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else
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scst_makefile="Makefile.scst"
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fi
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if [ "${debug_specialize}" = "true" ]; then
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specialize_patch_options+=(-v "debug=1")
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fi
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if [ "${generating_upstream_patch}" = "true" ]; then
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specialize_patch_options+=(-v "generating_upstream_patch_defined=1"
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-v "config_tcp_zero_copy_transfer_completion_notification_undefined=1")
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fi
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if [ "${multiple_patches}" = "true" ]; then
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if [ -e "${patchdir}" ]; then
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echo "Patch output directory ${patchdir} already exists."
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fi
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mkdir -p "${patchdir}"
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if [ ! -d "${patchdir}" ]; then
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echo "Error: ${patchdir} is not a directory."
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exit 1
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fi
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fi
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####################
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# Patch Generation #
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####################
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for f in fcst/linux-patches/series-"${kver}"*
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do
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if [ -e "$f" ]; then
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fcst_patch_series="$f"
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fi
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done
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# General kernel patches.
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scst_io_context=0
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scst_03_public_headers="scst/include/scst.h scst/include/scst_const.h \
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scst/include/scst_event.h scst/include/backport.h"
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scst_04_main="scst/src/scst_main.c scst/src/scst_priv.h \
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scst/src/scst_copy_mgr.c scst/src/scst_dlm.c scst/src/scst_dlm.h \
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scst/src/scst_event.c scst/src/scst_no_dlm.c"
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scst_05_targ="scst/src/scst_targ.c scst/src/scst_local_cmd.c \
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scst/src/scst_local_cmd.h"
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scst_06_lib="scst/src/scst_lib.c"
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scst_07_pres="scst/src/scst_pres.h scst/src/scst_pres.c"
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scst_08_sysfs="scst/src/scst_sysfs.c"
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scst_09_debug="scst/include/scst_debug.h scst/src/scst_debug.c"
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scst_10_sgv="scst/include/scst_sgv.h scst/src/scst_mem.h scst/src/scst_mem.c doc/scst_pg.sgml"
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scst_user="scst/include/scst_user.h scst/src/dev_handlers/scst_user.c"
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scst_13_vdisk="scst/src/dev_handlers/scst_vdisk.c"
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scst_14_tg="scst/src/scst_tg.c"
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separate_patches="scst_03_public_headers scst_04_main scst_05_targ scst_06_lib scst_07_pres scst_08_sysfs scst_09_debug scst_10_sgv scst_user scst_13_vdisk scst_14_tg"
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# Suppress shellcheck warnings about unused variables.
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echo "$scst_03_public_headers $scst_04_main $scst_05_targ $scst_06_lib $scst_07_pres $scst_08_sysfs $scst_09_debug $scst_10_sgv $scst_user $scst_13_vdisk $scst_14_tg" >/dev/null
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source_files_in_separate_patch=""
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for s in ${separate_patches}
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do
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source_files_in_separate_patch+=" $(set | \
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sed -n -e "s/^$s='\(.*\)'$/\1/p" -e "s/^$s=\(.*\)$/\1/p")"
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done
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# Directory drivers/
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(
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if [ -e "scst/kernel/in-tree/Kconfig.drivers.Linux-${kver}.patch" ]; then
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add_patch "scst/kernel/in-tree/Kconfig.drivers.Linux-${kver}.patch" \
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"drivers/Kconfig"
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else
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add_patch "scst/kernel/in-tree/Kconfig.drivers.Linux.patch" \
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"drivers/Kconfig"
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fi
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if [ -e "scst/kernel/in-tree/Makefile.drivers.Linux-${kver}.patch" ]; then
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add_patch "scst/kernel/in-tree/Makefile.drivers.Linux-${kver}.patch"\
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"drivers/Makefile"
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else
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add_patch "scst/kernel/in-tree/Makefile.drivers.Linux.patch"\
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"drivers/Makefile"
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fi
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) \
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| process_patch "scst_01_drivers_kbuild.diff" || exit $?
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# Directory drivers/scst/
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(
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tmpdir="/tmp/scst-$$"
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mkdir -p "${tmpdir}"
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tmp_Kconfig="${tmpdir}/Kconfig.scst-${kver}"
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cat "scst/kernel/in-tree/Kconfig.scst" >"${tmp_Kconfig}"
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add_file "${tmp_Kconfig}" "drivers/scst/Kconfig"
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tmp_Makefile="${tmpdir}/${scst_makefile}"
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cat "scst/kernel/in-tree/${scst_makefile}" >"${tmp_Makefile}"
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add_file "$tmp_Makefile" "drivers/scst/Makefile"
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rm -rf "${tmpdir}"
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) \
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| process_patch "scst_02_scst_kbuild.diff" || exit $?
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for s in ${separate_patches}
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do
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{
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for f in $(eval 'echo "$'"{$s}"'"')
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do
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if [ "${f#scst/include}" != "${f}" ]; then
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add_file "${f}" "include/scst/${f#scst/include/}"
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elif [ "${f#doc}" != "${f}" ]; then
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add_file "${f}" "Documentation/scst/${f#doc/}"
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else
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add_file "${f}" "drivers/scst/${f#scst/src/}"
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fi
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done
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if grep -q /scst_itf_ver.h scst/src/Makefile &&
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[ "$s" = "scst_03_public_headers" ]; then
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tmp_itf_ver="$(mktemp /tmp/scst-itf-ver.h.XXXXXXXXXX)"
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cat <<"EOF" >"$tmp_itf_ver"
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/* Autogenerated, don't edit */
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#define SCST_INTF_VER "SCST_INTF_VER"
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#define SCST_CONST_INTF_VER "SCST_CONST_INTF_VER"
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#define DEV_USER_INTF_VER "DEV_USER_INTF_VER"
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EOF
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add_file "$tmp_itf_ver" "include/scst/scst_itf_ver.h"
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rm -f "$tmp_itf_ver"
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fi
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} |
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process_patch "${s}.diff" || exit $?
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done
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{
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if [ -e scst/README_in-tree ]; then
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add_file "scst/README_in-tree" "Documentation/scst/README.scst"
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fi
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add_file "scst/SysfsRules" "Documentation/scst/SysfsRules"
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} | process_patch "scst_11_core_doc.diff" || exit $?
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# Directory drivers/scst/dev_handlers/
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if [ -e "scst/kernel/in-tree/Makefile.dev_handlers-${kver}" ]; then
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add_file "scst/kernel/in-tree/Makefile.dev_handlers-${kver}" \
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"drivers/scst/dev_handlers/Makefile" \
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| process_patch "scst_11_dev_handlers_makefile.diff" || exit $?
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else
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add_file "scst/kernel/in-tree/Makefile.dev_handlers" \
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"drivers/scst/dev_handlers/Makefile" \
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| process_patch "scst_11_dev_handlers_makefile.diff" || exit $?
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fi
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for f in scst/src/dev_handlers/*.[ch]; do
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[ -e "$f" ] || continue
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if ! in_separate_patch "${f}"; then
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add_file "${f}" "drivers/scst/dev_handlers/${f#scst/src/dev_handlers/}"
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fi
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done \
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| process_patch "scst_14_passthrough.diff" || exit $?
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# Directory drivers/scst/fcst/
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(
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if [ -e "${fcst_patch_series}" ]; then
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grep -v '^#' "${fcst_patch_series}" |
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while read -r f; do
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cat "fcst/linux-patches/${f}"
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done
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fi
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for f in fcst/Kbuild fcst/Makefile_in-tree; do
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[ -e "$f" ] && add_file "$f" "drivers/scst/fcst/Makefile"
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done
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add_file "fcst/Kconfig" "drivers/scst/fcst/Kconfig"
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for f in fcst/*.[ch]; do
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[ -e "$f" ] || continue
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add_file "${f}" "drivers/scst/fcst/${f#fcst/}"
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done
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) | process_patch "fcst.diff" || exit $?
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add_file "fcst/README" "Documentation/scst/README.fcst" \
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| process_patch "fcst-doc.diff" || exit $?
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# Directory drivers/scst/iscsi-scst/
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# Make sure the file iscsi-scst/iscsi_scst_itf_ver.h is up to date.
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make -s -C iscsi-scst include/iscsi_scst_itf_ver.h || exit $?
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(
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for f in iscsi-scst/include/*h; do
|
|
[ -e "$f" ] || continue
|
|
case "${f}" in
|
|
"iscsi-scst/include/iscsi_scst_itf_ver.h")
|
|
;;
|
|
"iscsi-scst/include/iscsit_transport.h")
|
|
add_file "${f}" "include/scst/${f#iscsi-scst/include/}"
|
|
;;
|
|
*)
|
|
add_file "${f}" "include/scst/${f#iscsi-scst/include/}"
|
|
;;
|
|
esac
|
|
done
|
|
|
|
add_file "iscsi-scst/include/iscsi_scst_itf_ver.h" "include/scst/iscsi_scst_itf_ver.h"
|
|
|
|
add_file "iscsi-scst/kernel/Makefile.in-kernel" \
|
|
"drivers/scst/iscsi-scst/Makefile"
|
|
|
|
add_file "iscsi-scst/kernel/Kconfig" "drivers/scst/iscsi-scst/Kconfig"
|
|
|
|
for f in iscsi-scst/kernel/*.[ch]; do
|
|
[ -e "$f" ] || continue
|
|
add_file "${f}" "drivers/scst/iscsi-scst/${f#iscsi-scst/kernel/}"
|
|
done
|
|
|
|
for f in iscsi-scst/kernel/isert-scst/*.[ch]; do
|
|
[ -e "$f" ] || continue
|
|
add_file "${f}" "drivers/scst/iscsi-scst/isert-scst/${f#iscsi-scst/kernel/isert-scst/}"
|
|
done
|
|
add_file "iscsi-scst/kernel/isert-scst/Makefile.in-kernel" "drivers/scst/iscsi-scst/isert-scst/Makefile"
|
|
add_file "iscsi-scst/kernel/isert-scst/Kconfig" "drivers/scst/iscsi-scst/isert-scst/Kconfig"
|
|
) | process_patch "iscsi-scst.diff" || exit $?
|
|
|
|
add_file "iscsi-scst/README_in-tree" "Documentation/scst/README.iscsi" \
|
|
| process_patch "iscsi-scst-doc.diff" || exit $?
|
|
|
|
|
|
# Directory drivers/scsi/qla2xxx/
|
|
|
|
if [ "${qla2x00t}" = "true" ]; then
|
|
|
|
( cd qla2x00t && "$PWD/generate-in-tree-patches" "${full_kver}" ) || exit $?
|
|
|
|
for f in qla2x00t/in-tree-patches/"${krel}"/*.patch; do
|
|
[ -e "$f" ] || continue
|
|
g="${f#qla2x00t/in-tree-patches/"${krel}"/}"
|
|
g="${g%.patch}"
|
|
add_patch "${f}" "drivers/scsi/qla2xxx/${g}"
|
|
done
|
|
|
|
add_file "qla2x00t/qla2x_tgt.h" \
|
|
"drivers/scsi/qla2xxx/qla2x_tgt.h"
|
|
|
|
add_file "qla2x00t/qla2x_tgt_def.h" \
|
|
"drivers/scsi/qla2xxx/qla2x_tgt_def.h"
|
|
|
|
for f in qla2x00t/qla2x00-target/*.[ch]; do
|
|
[ -e "$f" ] &&
|
|
add_file "${f}" "drivers/scsi/qla2xxx/${f#qla2x00t/qla2x00-target/}"
|
|
done
|
|
|
|
add_file "qla2x00t/qla2x00-target/README" \
|
|
"Documentation/scst/README.qla2x00t" \
|
|
| process_patch "qla2x00t-doc.diff" || exit $?
|
|
|
|
elif [ "${qla2x00t_32gbit}" = "true" ]; then
|
|
|
|
( cd qla2x00t-32gbit && "$PWD/generate-in-tree-patches" "${full_kver}" ) || exit $?
|
|
|
|
for f in qla2x00t-32gbit/in-tree-patches/"${krel}"/*.patch; do
|
|
[ -e "$f" ] || continue
|
|
|
|
g="${f#qla2x00t-32gbit/in-tree-patches/"${krel}"/}"
|
|
g="${g%.patch}"
|
|
|
|
if [ "$g" = "qla.h" ]; then
|
|
add_patch "${f}" "include/trace/events/${g}"
|
|
else
|
|
add_patch "${f}" "drivers/scsi/qla2xxx/${g}"
|
|
fi
|
|
done
|
|
|
|
for f in qla2x00t-32gbit/qla2x00-target/*.[ch]; do
|
|
[ -e "$f" ] || continue
|
|
|
|
add_file "${f}" "drivers/scsi/qla2xxx/${f#qla2x00t-32gbit/qla2x00-target/}"
|
|
done
|
|
|
|
add_file "qla2x00t-32gbit/qla2x00-target/README" \
|
|
"Documentation/scst/README.qla2x00t" \
|
|
| process_patch "qla2x00t-doc.diff" || exit $?
|
|
|
|
fi | process_patch "qla2x00t.diff" || exit $?
|
|
|
|
|
|
# Directory drivers/scst/srpt
|
|
|
|
{
|
|
|
|
cat <<EOF
|
|
This patch adds the kernel module ib_srpt, which is a SCSI RDMA Protocol (SRP)
|
|
target implementation. This driver uses the InfiniBand stack and the SCST core.
|
|
|
|
It is a high performance driver capable of handling 600K+ 4K random write
|
|
IOPS by a single target as well as 2.5+ GB/s sequential throughput over
|
|
a single QDR IB port.
|
|
|
|
It was originally developed by Vu Pham (Mellanox) and has been optimized by
|
|
Bart Van Assche.
|
|
|
|
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
|
|
Cc: Vu Pham <vu@mellanox.com>
|
|
Cc: Roland Dreier <rdreier@cisco.com>
|
|
Cc: David Dillow <dillowda@ornl.gov>
|
|
EOF
|
|
if [ "$srpt" = "true" ]; then
|
|
|
|
add_file "srpt/README_in-tree" "Documentation/scst/README.srpt"
|
|
|
|
add_file "srpt/src/Kconfig" "drivers/scst/srpt/Kconfig"
|
|
|
|
add_file "srpt/src/Makefile.in_kernel" "drivers/scst/srpt/Makefile"
|
|
|
|
for f in srpt/src/*.[ch]; do
|
|
[ -e "$f" ] || continue
|
|
add_file "${f}" "drivers/scst/srpt/${f#srpt/src/}"
|
|
done
|
|
|
|
else
|
|
|
|
add_empty_file "drivers/scst/srpt/Kconfig"
|
|
|
|
add_empty_file "drivers/scst/srpt/Makefile"
|
|
|
|
fi \
|
|
} | process_patch "scst_17_srpt.diff" || exit $?
|
|
|
|
|
|
# Directory drivers/scst/scst_local
|
|
|
|
(
|
|
add_file "scst_local/README" "Documentation/scst/README.scst_local"
|
|
|
|
add_file "scst_local/in-tree/Kconfig" "drivers/scst/scst_local/Kconfig"
|
|
|
|
if [ -e "scst_local/in-tree/Makefile-${kver}" ]; then
|
|
add_file "scst_local/in-tree/Makefile-${kver}" "drivers/scst/scst_local/Makefile"
|
|
else
|
|
add_file "scst_local/in-tree/Makefile" "drivers/scst/scst_local/Makefile"
|
|
fi
|
|
|
|
add_file "scst_local/scst_local.c" "drivers/scst/scst_local/scst_local.c"
|
|
) | process_patch "scst_16_local.diff" || exit $?
|