git-annex/standalone/linux/skel/runshell
Joey Hess c079811226
Linux standalone: Add back the LOCPATH=/dev/null hack to avoid the system locale-archive being read.
Version mismatches between the system locale-archive and the glibc in the
bundle have been observed to cause git crashes.

Unfortunately, this causes locales to not be used in the linux standalone
bundle, as was the case until version 6.20160419.

glibc hardcodes the path to /usr/lib/locale/locale-archive and does not
let an environment variable cause a different locale-archive file to be used.

The only other option to include locales in the bundle would be to include
exploded locale definition directories in the bundle for a number of
locales, generated by localedef. But these take at least 300 kb per locale,
and there are a great many locales; it would be hundreds of megabytes to
include them all.

(Hmm, we could include localdef in the bundle, and check LANG in runshell
and compile the locale directories on the fly. This would need
/usr/share/i18n/ and /usr/lib/locale-archive to be included in the bundle.
It's.. doable.)

I know this is going to once again cause users of the bundle to complain
that eg, ls doesn't show their unicode filenames right. Better than strange
crashes though.
2016-10-04 12:53:09 -04:00

139 lines
3.6 KiB
Bash
Executable file

#!/bin/sh
# Runs a shell command (or interactive shell) using the binaries and
# libraries bundled with this app.
set -e
base="$(dirname "$0")"
if [ ! -d "$base" ]; then
echo "** cannot find base directory (I seem to be $0)" >&2
exit 1
fi
if [ ! -e "$base/bin/git-annex" ]; then
echo "** base directory $base does not contain bin/git-annex" >&2
exit 1
fi
if [ ! -e "$base/bin/git" ]; then
echo "** base directory $base does not contain bin/git" >&2
exit 1
fi
# Get absolute path to base, to avoid breakage when things change directories.
orig="$(pwd)"
cd "$base"
base="$(pwd)"
cd "$orig"
# --library-path won't work if $base contains : or ;
# Detect this problem, and work around it by using a temp directory.
if echo "$base" | grep -q '[:;]'; then
tbase=$(mktemp -d -p /tmp annexshimXXXXXXXXX 2>/dev/null || true)
if [ -z "$tbase" ]; then
tbase="/tmp/annexshim.$$"
mkdir "$tbase"
fi
ln -s "$base" "$tbase/link"
base="$tbase/link"
cleanuptbase () {
rm -rf "$tbase"
}
trap cleanuptbase EXIT
fi
# Set this variable when using this script inside a package of git-annex,
# which arranges for git-annex, git-annex-shell, and git to all be in the
# standard PATH.
GIT_ANNEX_PACKAGE_INSTALL=
if [ -z "$GIT_ANNEX_PACKAGE_INSTALL" ]; then
# Install shim that's used to run git-annex-shell from ssh authorized
# keys. The assistant also does this when run, but the user may not
# be using the assistant.
if [ ! -e "$HOME/.ssh/git-annex-shell" ]; then
mkdir "$HOME/.ssh" >/dev/null 2>&1 || true
if [ -e "$HOME/.ssh" ]; then
(
echo "#!/bin/sh"
echo "set -e"
echo "if [ \"x\$SSH_ORIGINAL_COMMAND\" != \"x\" ]; then"
echo "exec '$base/runshell' git-annex-shell -c \"\$SSH_ORIGINAL_COMMAND\""
echo "else"
echo "exec '$base/runshell' git-annex-shell -c \"\$@\""
echo "fi"
) > "$HOME/.ssh/git-annex-shell"
chmod +x "$HOME/.ssh/git-annex-shell"
fi
fi
# And this shim is used by the webapp when adding a remote ssh server.
if [ ! -e "$HOME/.ssh/git-annex-wrapper" ]; then
mkdir "$HOME/.ssh" >/dev/null 2>&1 || true
if [ -e "$HOME/.ssh" ]; then
(
echo "#!/bin/sh"
echo "set -e"
echo "exec '$base/runshell' \"\$@\""
) > "$HOME/.ssh/git-annex-wrapper"
chmod +x "$HOME/.ssh/git-annex-wrapper"
fi
fi
fi
# Put our binaries first, to avoid issues with out of date or incompatable
# system binaries. Extra binaries come after system path.
ORIG_PATH="$PATH"
export ORIG_PATH
PATH="$base/bin:$PATH:$base/extra"
export PATH
# These env vars are used by the shim wrapper around each binary.
for lib in $(cat "$base/libdirs"); do
GIT_ANNEX_LD_LIBRARY_PATH="$base/$lib:$GIT_ANNEX_LD_LIBRARY_PATH"
done
export GIT_ANNEX_LD_LIBRARY_PATH
GIT_ANNEX_DIR="$base"
export GIT_ANNEX_DIR
ORIG_GCONV_PATH="$GCONV_PATH"
export ORIG_GCONV_PATH
GCONV_PATH="$base/$(cat "$base/gconvdir")"
export GCONV_PATH
ORIG_LOCPATH="$LOCPATH"
export ORIG_LOCPATH
LOCPATH=/dev/null
export LOCPATH
ORIG_GIT_EXEC_PATH="$GIT_EXEC_PATH"
export ORIG_GIT_EXEC_PATH
GIT_EXEC_PATH="$base/git-core"
export GIT_EXEC_PATH
ORIG_GIT_TEMPLATE_DIR="$GIT_TEMPLATE_DIR"
export ORIG_GIT_TEMPLATE_DIR
GIT_TEMPLATE_DIR="$base/templates"
export GIT_TEMPLATE_DIR
ORIG_MANPATH="$MANPATH"
export ORIG_MANPATH
MANPATH="$base/usr/share/man:$MANPATH"
export MANPATH
# Indicate which variables were exported above and should be cleaned
# when running non-bundled programs.
GIT_ANNEX_STANDLONE_ENV="PATH GCONV_PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR MANPATH"
export GIT_ANNEX_STANDLONE_ENV
if [ "$1" ]; then
cmd="$1"
shift 1
if [ -z "$tbase" ]; then
exec "$cmd" "$@"
else
# allow EXIT trap to cleanup
"$cmd" "$@"
fi
else
sh
fi