linux-yocto/scripts/setlocalversion
Guenter Roeck 8ef14c2c41 Revert "scripts/setlocalversion: git: Make -dirty check more robust"
This reverts commit 6147b1cf19.

The reverted patch results in attempted write access to the source
repository, even if that repository is mounted read-only.

Output from "strace git status -uno --porcelain":

getcwd("/tmp/linux-test", 129)          = 16
open("/tmp/linux-test/.git/index.lock", O_RDWR|O_CREAT|O_EXCL|O_CLOEXEC, 0666) =
	-1 EROFS (Read-only file system)

While git appears to be able to handle this situation, a monitored
build environment (such as the one used for Chrome OS kernel builds)
may detect it and bail out with an access violation error. On top of
that, the attempted write access suggests that git _will_ write to the
file even if a build output directory is specified. Users may have the
reasonable expectation that the source repository remains untouched in
that situation.

Fixes: 6147b1cf19 ("scripts/setlocalversion: git: Make -dirty check more robust"
Cc: Genki Sky <sky@genki.is>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-11-11 23:04:52 +09:00

3.9 KiB
Executable File

#!/bin/sh

SPDX-License-Identifier: GPL-2.0

This scripts adds local version information from the version

control systems git, mercurial (hg) and subversion (svn).

If something goes wrong, send a mail the kernel build mailinglist

(see MAINTAINERS) and CC Nico Schottelius

<nico-linuxsetlocalversion -at- schottelius.org>.

usage() { echo "Usage: $0 [--save-scmversion] [srctree]" >&2 exit 1 }

scm_only=false srctree=. if test "$1" = "--save-scmversion"; then scm_only=true shift fi if test $# -gt 0; then srctree=$1 shift fi if test $# -gt 0 -o ! -d "$srctree"; then usage fi

scm_version() { local short short=false

cd "$srctree"
if test -e .scmversion; then
	cat .scmversion
	return
fi
if test "$1" = "--short"; then
	short=true
fi

# Check for git and a git repo.
if test -z "$(git rev-parse --show-cdup 2>/dev/null)" &&
   head=`git rev-parse --verify --short HEAD 2>/dev/null`; then

	# If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
	# it, because this version is defined in the top level Makefile.
	if [ -z "`git describe --exact-match 2>/dev/null`" ]; then

		# If only the short version is requested, don't bother
		# running further git commands
		if $short; then
			echo "+"
			return
		fi
		# If we are past a tagged commit (like
		# "v2.6.30-rc5-302-g72357d5"), we pretty print it.
		if atag="`git describe 2>/dev/null`"; then
			echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'

		# If we don't have a tag at all we print -g{commitish}.
		else
			printf '%s%s' -g $head
		fi
	fi

	# Is this git on svn?
	if git config --get svn-remote.svn.url >/dev/null; then
		printf -- '-svn%s' "`git svn find-rev $head`"
	fi

	# Check for uncommitted changes
	if git diff-index --name-only HEAD | grep -qv "^scripts/package"; then
		printf '%s' -dirty
	fi

	# All done with git
	return
fi

# Check for mercurial and a mercurial repo.
if test -d .hg && hgid=`hg id 2>/dev/null`; then
	# Do we have an tagged version?  If so, latesttagdistance == 1
	if [ "`hg log -r . --template '{latesttagdistance}'`" == "1" ]; then
		id=`hg log -r . --template '{latesttag}'`
		printf '%s%s' -hg "$id"
	else
		tag=`printf '%s' "$hgid" | cut -d' ' -f2`
		if [ -z "$tag" -o "$tag" = tip ]; then
			id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
			printf '%s%s' -hg "$id"
		fi
	fi

	# Are there uncommitted changes?
	# These are represented by + after the changeset id.
	case "$hgid" in
		*+|*+\ *) printf '%s' -dirty ;;
	esac

	# All done with mercurial
	return
fi

# Check for svn and a svn repo.
if rev=`LANG= LC_ALL= LC_MESSAGES=C svn info 2>/dev/null | grep '^Last Changed Rev'`; then
	rev=`echo $rev | awk '{print $NF}'`
	printf -- '-svn%s' "$rev"

	# All done with svn
	return
fi

}

collect_files() { local file res

for file; do
	case "$file" in
	*\~*)
		continue
		;;
	esac
	if test -e "$file"; then
		res="$res$(cat "$file")"
	fi
done
echo "$res"

}

if $scm_only; then if test ! -e .scmversion; then res=$(scm_version) echo "$res" >.scmversion fi exit fi

if test -e include/config/auto.conf; then . include/config/auto.conf else echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2 exit 1 fi

localversion* files in the build and source directory

res="$(collect_files localversion*)" if test ! "$srctree" -ef .; then res="$res$(collect_files "$srctree"/localversion*)" fi

CONFIG_LOCALVERSION and LOCALVERSION (if set)

res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"

scm version string if not at a tagged commit

if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then # full scm version string res="$res$(scm_version)" else # append a plus sign if the repository is not in a clean # annotated or signed tagged state (as git describe only # looks at signed or annotated tags - git tag -a/-s) and # LOCALVERSION= is not specified if test "${LOCALVERSION+set}" != "set"; then scm=$(scm_version --short) res="$res${scm:++}" fi fi

echo "$res"