From 77f6bac7ec9ea6daee34f00d64159e16790bd38f Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Thu, 10 Jul 2014 12:29:59 +0000
Subject: [PATCH] scripts/rebuild-rhel-kernel-rpm: Move code for downloading a
 RHEL (clone) RPM into a separate file

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@5672 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 scripts/rebuild-rhel-kernel-rpm | 104 +++++++++++++++-----------------
 scripts/rhel-rpm-functions      |  98 ++++++++++++++++++++++++++++++
 2 files changed, 148 insertions(+), 54 deletions(-)
 create mode 100644 scripts/rhel-rpm-functions

diff --git a/scripts/rebuild-rhel-kernel-rpm b/scripts/rebuild-rhel-kernel-rpm
index 88c93d16d..e34321fe3 100755
--- a/scripts/rebuild-rhel-kernel-rpm
+++ b/scripts/rebuild-rhel-kernel-rpm
@@ -36,63 +36,47 @@
 #
 ############################################################################
 
-scst_dir="$(dirname "$(dirname "$0")")"
-if [ ${scst_dir:0:1} != "/" ]; then
-  scst_dir="$PWD/${scst_dir}"
+scriptdir="$(dirname "$0")"
+if [ "${scriptdir:0:1}" != "/" ]; then
+    scriptdir="$PWD/${scriptdir}"
 fi
+source "${scriptdir}/rhel-rpm-functions"
+scst_dir="$(dirname "$scriptdir")"
 downloaddir=$HOME/software/downloads
 rpmbuild_dir=$HOME/rpmbuild
-if [ "$1" = "" ]; then
-  if echo "$(uname -r)" | grep -q uek; then
+
+if echo "$(uname -r)" | grep -q uek; then
     kernel="kernel-uek-$(uname -r)"
-  else
-    kernel="kernel-$(uname -r)"
-  fi
 else
-  kernel="$1"
+    kernel="kernel-$(uname -r)"
 fi
+
+releasever="$(sed -n -e 's/^.* release \([0-9.]*\).*$/\1/p' /etc/issue)"
+
+distro="$(sed -n -e 's/^\(.*\) release .*$/\1/p' /etc/issue)"
+
+install_prerequisites=true
+
+type /usr/bin/getopt >/dev/null || exit 1
+options="$(/usr/bin/getopt d:ik:r: "$@")" || { usage; exit 1; }
+set -- $options
+while [ "$1" != "${1#-}" ]; do
+    case "$1" in
+	'-d') distro="$2";     shift; shift;;
+	'-i') install_prerequisites="false"; shift;;
+        '-k') kernel="$2";     shift; shift;;
+	'-r') releasever="$2"; shift; shift;;
+        '--') shift; break;;
+        *)    usage; exit 1;;
+    esac
+done
+
 arch="$(uname -m)"
 kernel="${kernel%.${arch}}"
 kernel_src_rpm="${kernel}.src.rpm"
 kver="${kernel#kernel-}"
-distro="$(sed -n -e 's/^\(.*\) release .*$/\1/p' /etc/issue)"
-if [ -n "$2" ]; then
-  releasever="$2"
-else
-  releasever="$(sed -n -e 's/^.* release \([0-9.]*\).*$/\1/p' /etc/issue)"
-fi
-releasevermajor="$(echo $releasever | cut -f1 -d.)"
-releaseverminor="$(echo $releasever | cut -f2 -d.)"
-case "$distro" in
-  "CentOS"*)
-    case $releasever in
-      5.*|6.[01])
-        srpm_url=("http://vault.centos.org/${releasever}/os/SRPMS" "http://vault.centos.org/${releasever}/updates/SRPMS");;
-      *)
-        srpm_url=("http://vault.centos.org/${releasever}/os/Source/SPackages" "http://vault.centos.org/${releasever}/updates/Source/SPackages");;
-    esac
-    ;;
-  "Red Hat Enterprise Linux"*)
-    srpm_url=("http://ftp.redhat.com/pub/redhat/linux/enterprise/${releasevermajor}Server/en/os/SRPMS")
-    ;;
-  "Oracle Linux Server")
-    srpm_url=("http://public-yum.oracle.com/repo/OracleLinux/OL${releasevermajor}/${releaseverminor}/base/x86_64/getPackageSource" "http://public-yum.oracle.com/repo/OracleLinux/OL${releasevermajor}/latest/x86_64/getPackageSource" "http://public-yum.oracle.com/repo/OracleLinux/OL${releasevermajor}/UEK/latest/x86_64/getPackageSource")
-    ;;
-  "Scientific Linux")
-    if [ "$releasevermajor" = 6 ]; then
-      srpm_url=("http://ftp.scientificlinux.org/linux/scientific/$releasever/SRPMS/vendor")
-    else
-      srpm_url=("http://ftp.scientificlinux.org/linux/scientific/$releasevermajor$releaseverminor/SRPMS/vendor")
-    fi
-    ;;
-  "Fedora")
-    srpm_url="http://ftp.redhat.com/redhat/rhel/rc/7/Server/source/tree/Packages"
-    ;;
-  *)
-    echo "Unknown type of distribution: $distro"
-    exit 1
-    ;;
-esac
+
+srpm_urls="$(get_srpm_urls $distro $releasever $arch)" || exit $?
 
 function log {
     echo
@@ -137,7 +121,9 @@ fi
 
 log "Installing prerequisites"
 
-sudo yum install -y -q asciidoc binutils-devel elfutils-libelf-devel hmaccalc ncurses-devel newt-devel patchutils 'perl(ExtUtils::Embed)' python-devel redhat-rpm-config rpmdevtools rng-tools rpm-build unifdef xmlto yum-utils zlib-devel
+if $install_prerequisites; then
+    sudo yum install -y -q asciidoc binutils-devel elfutils-libelf-devel hmaccalc ncurses-devel newt-devel patchutils 'perl(ExtUtils::Embed)' python-devel redhat-rpm-config rpmdevtools rng-tools rpm-build unifdef xmlto yum-utils zlib-devel
+fi
 
 rc=$?; if [ $rc != 0 ]; then exit $rc; fi
 
@@ -150,7 +136,7 @@ log "Installing, unpacking and preparing kernel source files"
 mkdir -p ${downloaddir}
 if [ ! -e ${downloaddir}/${kernel_src_rpm} ]; then
   cd ${downloaddir}
-  for dir in ${srpm_url[@]}
+  for dir in ${srpm_urls}
   do
     url="$dir/${kernel_src_rpm}"
     echo "Trying $url ..."
@@ -166,7 +152,9 @@ fi
 
 log "Installing kernel build prerequisites"
 
-sudo yum-builddep -q -y ${downloaddir}/${kernel_src_rpm}
+if $install_prerequisites; then
+    sudo yum-builddep -q -y ${downloaddir}/${kernel_src_rpm}
+fi
 
 log "Installing kernel sources in ${rpmbuild_dir}"
 
@@ -186,10 +174,18 @@ log "Copying SCST patches to the SOURCES directory"
 
 cd ${rpmbuild_dir}/SOURCES
 copy_patch $scst_dir/scst/kernel/rhel/scst_exec_req_fifo-${kver}.patch scst_exec_req_fifo.patch
-f="$scst_dir/iscsi-scst/kernel/patches/rhel/put_page_callback-${kver}.patch"
-if [ -e "$f" ]; then
-    copy_patch "$f" put_page_callback.patch
-fi
+v="${kver}"
+while [ "${v/.*}" != "$v" ]; do
+    f="$scst_dir/iscsi-scst/kernel/patches/rhel/put_page_callback-${v}.patch"
+    if [ -e "$f" ]; then
+	copy_patch "$f" put_page_callback.patch
+	break
+    fi
+    while [ "${v%[0-9a-z]}" != "$v" ]; do
+	v="${v%[0-9a-z]}"
+    done
+    v="${v%.}"
+done
 
 log "Adding SCST patches in kernel.spec"
 
diff --git a/scripts/rhel-rpm-functions b/scripts/rhel-rpm-functions
new file mode 100644
index 000000000..285236d82
--- /dev/null
+++ b/scripts/rhel-rpm-functions
@@ -0,0 +1,98 @@
+# -*- mode: shell-script -*-
+# Shell functions for downloading and extracting a RHEL or RHEL clone RPM
+
+# Arguments:
+# $1: Linux distribution name
+# $2: Linux distribution version (major.minor)
+# $3: architecture
+function get_srpm_urls() {
+    local arch distro releasever releasevermajor releaseverminor
+
+    distro="$1"
+    releasever="$2"
+    arch="$3"
+    IFS=.
+    set -- "$2"
+    unset IFS
+    releasevermajor="$1"
+    releaseverminor="$2"
+
+    case "$distro" in
+	"CentOS"*)
+	    case $releasever in
+		5.*|6.[01])
+		    echo "http://vault.centos.org/${releasever}/os/SRPMS http://vault.centos.org/${releasever}/updates/SRPMS";;
+		6.*)
+		    echo "http://vault.centos.org/${releasever}/os/Source/SPackages http://vault.centos.org/${releasever}/updates/Source/SPackages";;
+	    esac
+	    ;;
+	"Red Hat Enterprise Linux"*)
+	    case $releasever in
+		[56].*)
+		    echo "http://ftp.redhat.com/pub/redhat/linux/enterprise/${releasevermajor}Server/en/os/SRPMS http://ftp.redhat.com/redhat/rhel/rc/7/Server/source/tree/Packages";;
+	    esac
+	    ;;
+	"Oracle Linux Server")
+	    echo "http://public-yum.oracle.com/repo/OracleLinux/OL${releasevermajor}/${releaseverminor}/base/${arch}/getPackageSource http://public-yum.oracle.com/repo/OracleLinux/OL${releasevermajor}/latest/${arch}/getPackageSource http://public-yum.oracle.com/repo/OracleLinux/OL${releasevermajor}/UEK/latest/${arch}/getPackageSource"
+	    ;;
+	"Scientific Linux")
+	    case $releasever in
+		5.*)
+		    echo "http://ftp.scientificlinux.org/linux/scientific/$releasevermajor$releaseverminor/SRPMS/vendor";;
+		6.*)
+		    echo "http://ftp.scientificlinux.org/linux/scientific/$releasever/SRPMS/vendor";;
+	    esac
+	    ;;
+	*)
+	    echo "Unknown type of distribution: $distro" >&2
+	    return 1
+	    ;;
+    esac
+}
+
+# Arguments:
+# $1: Linux distribution name
+# $2: Linux distribution version (major.minor)
+# $3: architecture
+function get_rpm_urls() {
+    local arch distro releasever releasevermajor releaseverminor
+
+    distro="$1"
+    releasever="$2"
+    arch="$3"
+    IFS=.
+    set -- "$2"
+    unset IFS
+    releasevermajor="$1"
+    releaseverminor="$2"
+
+    case "$distro" in
+	"CentOS"*)
+	    case $releasever in
+		5.*)
+		    echo "http://vault.centos.org/${releasever}/os/${arch}/CentOS http://vault.centos.org/${releasever}/updates/${arch}/RPMS";;
+		6.[01])
+		    echo "http://vault.centos.org/${releasever}/os/${arch}/Packages http://vault.centos.org/${releasever}/updates/${arch}/Packages";;
+		6.*)
+		    echo "http://vault.centos.org/${releasever}/os/${arch}/Packages http://vault.centos.org/${releasever}/updates/${arch}/Packages";;
+	    esac
+	    ;;
+	"Red Hat Enterprise Linux"*)
+	    echo "";;
+	"Oracle Linux Server")
+	    echo "http://public-yum.oracle.com/repo/OracleLinux/OL${releasevermajor}/${releaseverminor}/base/${arch}/getPackageSource http://public-yum.oracle.com/repo/OracleLinux/OL${releasevermajor}/latest/${arch}/getPackageSource http://public-yum.oracle.com/repo/OracleLinux/OL${releasevermajor}/UEK/latest/${arch}/getPackageSource"
+	    ;;
+	"Scientific Linux")
+	    case $releasever in
+		5.*)
+		    echo "http://ftp.scientificlinux.org/linux/scientific/$releasevermajor$releaseverminor/SRPMS/vendor";;
+		6.*)
+		    echo "http://ftp.scientificlinux.org/linux/scientific/$releasever/SRPMS/vendor";;
+	    esac
+	    ;;
+	*)
+	    echo "Unknown distribution type: $distro" >&2
+	    return 1
+	    ;;
+    esac
+}