4cbde2ecbf
The existing mechanisms for determining what code is running in the kernel do not always correctly report the git hash. The versions reported there do not reflect changes made since `configure` was run (i.e. incremental builds do not update the version) and they are misleading if git tags are not set up properly. This applies to `modinfo zfs`, `dmesg`, and `/sys/module/zfs/version`. There are complicated requirements on how the existing version is generated. Therefore we are leaving that alone, and adding a new mechanism to record and retrieve the git hash: `cat /proc/sys/kernel/spl/gitrev` The gitrev is re-generated at compile time, when running `make` (including for incremental builds). The value is the output of `git describe` (or "unknown" if not in a git repo or there are uncommitted changes). We're also removing /proc/sys/kernel/spl/version, which was never very useful. Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com> Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed by: Tim Chase <tim@chase2k.com> Signed-off-by: Matthew Ahrens <mahrens@delphix.com> Closes #7931 Closes #7965
114 lines
2.5 KiB
Bash
Executable File
114 lines
2.5 KiB
Bash
Executable File
#!/bin/bash
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set -e
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usage()
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{
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echo "usage: $0 <kernel source tree>" >&2
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exit 1
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}
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[ "$#" -eq 1 ] || usage
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KERNEL_DIR="$(readlink --canonicalize-existing "$1")"
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MODULES=()
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MODULES+="spl"
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for MODULE_DIR in module/*
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do
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[ -d "$MODULE_DIR" ] || continue
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[ "spl" = "${MODULE_DIR##*/}" ] && continue
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MODULES+=("${MODULE_DIR##*/}")
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done
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if ! [ -e 'zfs_config.h' ]
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then
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echo >&2
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echo " $0: you did not run configure, or you're not in the ZFS source directory." >&2
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echo " $0: run configure with --with-linux=$KERNEL_DIR and --enable-linux-builtin." >&2
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echo >&2
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exit 1
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fi
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make clean || true
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scripts/make_gitrev.sh
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rm -rf "$KERNEL_DIR/include/zfs" "$KERNEL_DIR/fs/zfs"
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cp --recursive include "$KERNEL_DIR/include/zfs"
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cp --recursive module "$KERNEL_DIR/fs/zfs"
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cp zfs_config.h "$KERNEL_DIR/include/zfs/"
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for MODULE in "${MODULES[@]}"
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do
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sed -i.bak '/obj =/d' "$KERNEL_DIR/fs/zfs/$MODULE/Makefile"
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sed -i.bak '/src =/d' "$KERNEL_DIR/fs/zfs/$MODULE/Makefile"
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done
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cat > "$KERNEL_DIR/fs/zfs/Kconfig" <<"EOF"
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config ZFS
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tristate "ZFS filesystem support"
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depends on EFI_PARTITION
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select ZLIB_INFLATE
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select ZLIB_DEFLATE
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help
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This is the ZFS filesystem from the ZFS On Linux project.
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See http://zfsonlinux.org/
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To compile this file system support as a module, choose M here.
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If unsure, say N.
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EOF
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{
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cat <<-"EOF"
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ZFS_MODULE_CFLAGS = -I$(srctree)/include/zfs
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ZFS_MODULE_CFLAGS += -I$(srctree)/include/zfs/spl
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ZFS_MODULE_CFLAGS += -include $(srctree)/include/zfs/zfs_config.h
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ZFS_MODULE_CFLAGS += -std=gnu99 -Wno-declaration-after-statement
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ZFS_MODULE_CPPFLAGS = -D_KERNEL
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ZFS_MODULE_CPPFLAGS += -UDEBUG -DNDEBUG
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export ZFS_MODULE_CFLAGS ZFS_MODULE_CPPFLAGS
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obj-$(CONFIG_ZFS) :=
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EOF
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for MODULE in "${MODULES[@]}"
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do
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echo 'obj-$(CONFIG_ZFS) += ' "$MODULE/"
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done
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} > "$KERNEL_DIR/fs/zfs/Kbuild"
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add_after()
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{
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local FILE="$1"
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local MARKER="$2"
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local NEW="$3"
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local LINE
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while IFS='' read -r LINE
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do
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echo "$LINE"
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if [ -n "$MARKER" -a "$LINE" = "$MARKER" ]
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then
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echo "$NEW"
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MARKER=''
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if IFS='' read -r LINE
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then
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[ "$LINE" != "$NEW" ] && echo "$LINE"
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fi
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fi
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done < "$FILE" > "$FILE.new"
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mv "$FILE.new" "$FILE"
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}
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add_after "$KERNEL_DIR/fs/Kconfig" 'if BLOCK' 'source "fs/zfs/Kconfig"'
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add_after "$KERNEL_DIR/fs/Makefile" 'endif' 'obj-$(CONFIG_ZFS) += zfs/'
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echo >&2
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echo " $0: done." >&2
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echo " $0: now you can build the kernel with ZFS support." >&2
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echo " $0: make sure you enable ZFS support (CONFIG_ZFS) before building." >&2
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echo >&2
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