- pick apply-patches.sh from buildroot

support/scripts/apply-patches.sh

@@ -0,0 +1,170 @@
+#!/usr/bin/env bash
+# A little script I whipped up to make it easy to
+# patch source trees and have sane error handling
+# -Erik
+#
+# (c) 2002 Erik Andersen <andersen@codepoet.org>
+#
+# Parameters:
+# - "-s", optional. Silent operation, don't print anything if there
+# isn't any error.
+# - the build directory, optional, default value is '.'. The place where are
+# the package sources.
+# - the patch directory, optional, default '../kernel-patches'. The place
+# where are the scripts you want to apply.
+# - other parameters are the patch name patterns, optional, default value is
+# '*'. Pattern(s) describing the patch names you want to apply.
+#
+# The script will look recursively for patches from the patch directory. If a
+# file named 'series' exists then the patches mentioned in it will be applied
+# as plain patches, regardless of their file name. If no 'series' file exists,
+# the script will look for file names matching pattern(s). If the name
+# ends with '.tar.*', '.tbz2' or '.tgz', the file is considered as an archive
+# and will be uncompressed into a directory named
+# '.patches-name_of_the_archive-unpacked'. It's the turn of this directory to
+# be scanned with '*' as pattern. Remember that scanning is recursive. Other
+# files than series file and archives are considered as a patch.
+#
+# Once a patch is found, the script will try to apply it. If its name doesn't
+# end with '.gz', '.bz', '.bz2', '.xz', '.zip', '.Z', '.diff*' or '.patch*',
+# it will be skipped. If necessary, the patch will be uncompressed before being
+# applied. The list of the patches applied is stored in '.applied_patches_list'
+# file in the build directory.
+
+set -e
+
+silent=
+if [ "$1" = "-s" ] ; then
+    # add option to be used by the patch tool
+    silent=-s
+    shift
+fi
+
+# Set directories from arguments, or use defaults.
+builddir=${1-.}
+patchdir=${2-../kernel-patches}
+shift 2
+patchpattern=${@-*}
+
+# use a well defined sorting order
+export LC_COLLATE=C
+
+if [ ! -d "${builddir}" ] ; then
+    echo "Aborting.  '${builddir}' is not a directory."
+    exit 1
+fi
+if [ ! -d "${patchdir}" ] ; then
+    echo "Aborting.  '${patchdir}' is not a directory."
+    exit 1
+fi
+
+# Remove any rejects present BEFORE patching - Because if there are
+# any, even if patches are well applied, at the end it will complain
+# about rejects in builddir.
+find ${builddir}/ '(' -name '*.rej' -o -name '.*.rej' ')' -print0 | \
+    xargs -0 -r rm -f
+
+function apply_patch {
+    path="${1%%/}"
+    patch="${2}"
+    case "${path}" in
+        /*) ;;
+        *)  path="$PWD/${path}";;
+    esac
+    if [ "$3" ]; then
+        type="series"; uncomp="cat"
+    else
+        case "$patch" in
+            *.gz)
+            type="gzip"; uncomp="gunzip -dc"; ;;
+            *.bz)
+            type="bzip"; uncomp="bunzip -dc"; ;;
+            *.bz2)
+            type="bzip2"; uncomp="bunzip2 -dc"; ;;
+            *.xz)
+            type="xz"; uncomp="unxz -dc"; ;;
+            *.zip)
+            type="zip"; uncomp="unzip -d"; ;;
+            *.Z)
+            type="compress"; uncomp="uncompress -c"; ;;
+            *.diff*)
+            type="diff"; uncomp="cat"; ;;
+            *.patch*)
+            type="patch"; uncomp="cat"; ;;
+            *)
+            echo "Unsupported file type for ${path}/${patch}, skipping";
+            return 0
+            ;;
+        esac
+    fi
+    if [ -z "$silent" ] ; then
+        echo ""
+        echo "Applying $patch using ${type}: "
+    fi
+    if [ ! -e "${path}/$patch" ] ; then
+        echo "Error: missing patch file ${path}/$patch"
+        exit 1
+    fi
+    existing="$(grep -E "/${patch}\$" ${builddir}/.applied_patches_list || true)"
+    if [ -n "${existing}" ]; then
+        echo "Error: duplicate filename '${patch}'"
+        echo "Conflicting files are:"
+        echo "  already applied: ${existing}"
+        echo "  to be applied  : ${path}/${patch}"
+        exit 1
+    fi
+    if ${uncomp} "${path}/$patch" | grep -q "^rename from" && \
+       ${uncomp} "${path}/$patch" | grep -q "^rename to" ; then
+        echo "Error: patch contains some renames, not supported by old patch versions"
+        exit 1
+    fi
+    echo "${path}/${patch}" >> ${builddir}/.applied_patches_list
+    ${uncomp} "${path}/$patch" | patch -g0 -p1 -E --no-backup-if-mismatch -d "${builddir}" -t -N $silent
+    if [ $? != 0 ] ; then
+        echo "Patch failed!  Please fix ${patch}!"
+        exit 1
+    fi
+}
+
+function scan_patchdir {
+    local path=$1
+    shift 1
+    patches=${@-*}
+
+    # If there is a series file, use it instead of using ls sort order
+    # to apply patches. Skip line starting with a dash.
+    if [ -e "${path}/series" ] ; then
+        # The format of a series file accepts a second field that is
+        # used to specify the number of directory components to strip
+        # when applying the patch, in the form -pN (N an integer >= 0)
+        # We assume this field to always be -p1 whether it is present
+        # or missing.
+        series_patches="`grep -Ev "^#" ${path}/series | cut -d ' ' -f1 2> /dev/null`"
+        for i in $series_patches; do
+            apply_patch "$path" "$i" series
+        done
+    else
+        for i in `cd $path; ls -d $patches 2> /dev/null` ; do
+            if [ -d "${path}/$i" ] ; then
+                scan_patchdir "${path}/$i"
+            elif echo "$i" | grep -q -E "\.tar(\..*)?$|\.tbz2?$|\.tgz$" ; then
+                unpackedarchivedir="$builddir/.patches-$(basename $i)-unpacked"
+                rm -rf "$unpackedarchivedir" 2> /dev/null
+                mkdir "$unpackedarchivedir"
+                tar -C "$unpackedarchivedir" -xaf "${path}/$i"
+                scan_patchdir "$unpackedarchivedir"
+            else
+                apply_patch "$path" "$i"
+            fi
+        done
+    fi
+}
+
+touch ${builddir}/.applied_patches_list
+scan_patchdir "$patchdir" "$patchpattern"
+
+# Check for rejects...
+if [ "`find $builddir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ] ; then
+    echo "Aborting.  Reject files found."
+    exit 1
+fi