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- # Copyright ©: 2010, Modestas Vainius <modax@debian.org>
- #
- # This program is free software: you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation, either version 3 of the License, or
- # (at your option) any later version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with this program. If not, see <http://www.gnu.org/licenses/>.
-
- libeatmydata="/usr/lib/libeatmydata/libeatmydata.so"
- name="eatmydata"
-
- eatmydata_error()
- {
- echo "$name error: $1" >&2
- exit 1
- }
-
- eatmydata_exec()
- {
- local cmd
- cmd="$1"
- if [ "${cmd#*/*}" = "${cmd}" ]; then
- # $cmd does not contain '/'. Look in $PATH avoiding loops with self.
- local self save_ifs path exe ok
-
- self="`readlink -f "$0"`"
- save_ifs="$IFS"
- IFS=":"
- ok=""
- for path in $PATH; do
- exe="${path}/$cmd"
- # Avoid loops with self
- if [ -x "$exe" ] && [ "`readlink -f "$exe"`" != "$self" ]; then
- ok="yes"
- break
- fi
- done
- IFS="$save_ifs"
- if [ -n "$ok" ]; then
- cmd="$exe"
- else
- eatmydata_error "unable to find '$cmd' in PATH"
- fi
- fi
-
- # Preload libeatmydata
- if [ -n "$LD_PRELOAD" ]; then
- export LD_PRELOAD="$libeatmydata $LD_PRELOAD"
- else
- export LD_PRELOAD="$libeatmydata"
- fi
- # Execute requested command
- shift
- exec "$cmd" "$@"
- }
-
- # Verify environment
- if [ ! -f "$libeatmydata" ]; then
- eatmydata_error "could not find $name library $libeatmydata"
- fi
-