Merge pull request #14 from chutzimir/bin-kernel

Make it possible to run genkernel as an unprivileged user - useful to build a kernel from an ebuild

gen_determineargs.sh

@@ -4,6 +4,7 @@
 get_KV() {
     if [ "${KERNEL_SOURCES}" = '0' -a -e "${KERNCACHE}" ]
     then
+        mkdir -p ${TEMP}
         /bin/tar -xj -C ${TEMP} -f ${KERNCACHE} kerncache.config 
         if [ -e ${TEMP}/kerncache.config ]
         then
@@ -11,7 +12,7 @@ get_KV() {
             PAT=`grep ^PATCHLEVEL\ \= ${TEMP}/kerncache.config | awk '{ print $3 };'`
             SUB=`grep ^SUBLEVEL\ \= ${TEMP}/kerncache.config | awk '{ print $3 };'`
             EXV=`grep ^EXTRAVERSION\ \= ${TEMP}/kerncache.config | sed -e "s/EXTRAVERSION =//" -e "s/ //g"`
-            LOV=`grep ^CONFIG_LOCALVERSION\= ${TEMP}/kerncache.config | sed -e "s/CONFIG_LOCALVERSION=\"\(.*\)\"/\1/"`
+            LOV=`grep ^CONFIG_LOCALVERSION\ \= ${TEMP}/kerncache.config | sed -e "s/CONFIG_LOCALVERSION =//" -e "s/ //g"`
             KV=${VER}.${PAT}.${SUB}${EXV}${LOV}
         else
             gen_die "Could not find kerncache.config in the kernel cache! Exiting."
@@ -59,8 +60,8 @@ get_KV() {
             KV=${VER}.${PAT}.${SUB}${EXV}${LOV}
         else
             determine_config_file
-            LCV=`grep ^CONFIG_LOCALVERSION= "${KERNEL_CONFIG}" | sed -r -e "s/.*=\"(.*)\"/\1/"`
-            KV=${VER}.${PAT}.${SUB}${EXV}${LCV}
+            LOV=`grep ^CONFIG_LOCALVERSION= "${KERNEL_CONFIG}" | sed -r -e "s/.*=\"(.*)\"/\1/"`
+            KV=${VER}.${PAT}.${SUB}${EXV}${LOV}
         fi
     fi
 }

gen_initramfs.sh

@@ -273,7 +273,7 @@ append_iscsi(){
 append_lvm(){
     if [ -d "${TEMP}/initramfs-lvm-temp" ]
     then
-        rm -r "${TEMP}/initramfs-lvm-temp/"
+        rm -rf "${TEMP}/initramfs-lvm-temp/"
     fi
     cd ${TEMP}
     mkdir -p "${TEMP}/initramfs-lvm-temp"/{bin,sbin}
@@ -305,7 +305,7 @@ append_lvm(){
     find . -print | cpio ${CPIO_ARGS} --append -F "${CPIO}" \
             || gen_die "compressing lvm cpio"
     cd "${TEMP}"
-    rm -r "${TEMP}/initramfs-lvm-temp/"
+    rm -rf "${TEMP}/initramfs-lvm-temp/"
 }
 
 append_mdadm(){
@@ -690,25 +690,33 @@ append_ld_so_conf() {
     # but we need to generate a valid ld.so.conf. So we extract the
     # current CPIO archive, run ldconfig -r against it and append the
     # last bits.
-    local tmp_dir_ext="${tmp_dir}/extracted"
-    mkdir -p "${tmp_dir_ext}"
-    mkdir -p "${tmp_dir}/etc"
-    cd "${tmp_dir_ext}" || gen_die "cannot cd into ${tmp_dir_ext}"
-    cpio -id --quiet < "${CPIO}" || gen_die "cannot re-extract ${CPIO}"
-
-    cd "${tmp_dir}" || gen_die "cannot cd into ${tmp_dir}"
-    ldconfig -r "${tmp_dir_ext}" || \
-        gen_die "cannot run ldconfig on ${tmp_dir_ext}"
-    cp -a "${tmp_dir_ext}/etc/ld.so.cache" "${tmp_dir}/etc/ld.so.cache" || \
-        gen_die "cannot copy ld.so.cache"
-    rm -rf "${tmp_dir_ext}"
+    #
+    # We only do this if we are "root", because "ldconfig -r" requires
+    # root privileges to chroot. If we are not root we don't generate the
+    # ld.so.cache here, but expect that ldconfig would regenerate it when the
+    # machine boots.
+    if [[ $(id -u) == 0 && -z ${FAKED_MODE:-} ]]; then
+        local tmp_dir_ext="${tmp_dir}/extracted"
+        mkdir -p "${tmp_dir_ext}"
+        mkdir -p "${tmp_dir}/etc"
+        cd "${tmp_dir_ext}" || gen_die "cannot cd into ${tmp_dir_ext}"
+        cpio -id --quiet < "${CPIO}" || gen_die "cannot re-extract ${CPIO}"
+
+        cd "${tmp_dir}" || gen_die "cannot cd into ${tmp_dir}"
+        ldconfig -r "${tmp_dir_ext}" || \
+            gen_die "cannot run ldconfig on ${tmp_dir_ext}"
+        cp -a "${tmp_dir_ext}/etc/ld.so.cache" "${tmp_dir}/etc/ld.so.cache" || \
+            gen_die "cannot copy ld.so.cache"
+        rm -rf "${tmp_dir_ext}"
+
+        cd "${tmp_dir}" || gen_die "cannot cd into ${tmp_dir}"
+        log_future_cpio_content
+        find . -print | cpio ${CPIO_ARGS} --append -F "${CPIO}" \
+                || gen_die "compressing ld.so.cache cpio"
+        cd "$(dirname "${tmp_dir}")"
+        rm -rf "${tmp_dir}"
+    fi
 
-    cd "${tmp_dir}" || gen_die "cannot cd into ${tmp_dir}"
-    log_future_cpio_content
-    find . -print | cpio ${CPIO_ARGS} --append -F "${CPIO}" \
-            || gen_die "compressing ld.so.cache cpio"
-    cd "$(dirname "${tmp_dir}")"
-    rm -rf "${tmp_dir}"
 }
 
 print_list()

gen_package.sh

@@ -95,6 +95,7 @@ gen_kerncache()
     echo "PATCHLEVEL = ${PAT}" >> "${TEMP}/kerncache/kerncache.config"
     echo "SUBLEVEL = ${SUB}" >> "${TEMP}/kerncache/kerncache.config"
     echo "EXTRAVERSION = ${EXV}" >> "${TEMP}/kerncache/kerncache.config"
+    echo "CONFIG_LOCALVERSION = ${LOV}" >> "${TEMP}/kerncache/kerncache.config"
 
     mkdir -p "${TEMP}/kerncache/lib/modules/"
 
@@ -143,7 +144,7 @@ gen_kerncache_extract_modules()
 
 gen_kerncache_extract_config()
 {
-    if [ -e "${KERNCACHE}" ]
+    if [ -e "${KERNCACHE}" -a "${SAVE_CONFIG}" = '1' ]
     then
         print_info 1 'Extracting kerncache config to /etc/kernels'
         mkdir -p /etc/kernels
@@ -155,7 +156,7 @@ gen_kerncache_extract_config()
 gen_kerncache_is_valid()
 {
     KERNCACHE_IS_VALID=0
-    if [ "${NO_KERNEL_SOURCES}" = '1' ]
+    if [ "${KERNEL_SOURCES}" = '0' ]
     then
 
         BUILD_KERNEL=0