1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
#!/bin/sh
#-
# Copyright © 2014
# Thorsten “mirabilos” Glaser <t.glaser@tarent.de>
#
# Provided that these terms and disclaimer and all copyright notices
# are retained or reproduced in an accompanying document, permission
# is granted to deal in this work without restriction, including un‐
# limited rights to use, publicly perform, distribute, sell, modify,
# merge, give away, or sublicence.
#
# This work is provided “AS IS” and WITHOUT WARRANTY of any kind, to
# the utmost extent permitted by applicable law, neither express nor
# implied; without malicious intent or gross negligence. In no event
# may a licensor, author or contributor be held liable for indirect,
# direct, other damage, loss, or other issues arising in any way out
# of dealing in the work, even if advised of the possibility of such
# damage or existence of a defect, except proven that it results out
# of said person’s immediate fault when using the work as intended.
#-
# eatmydata utility / wrapper compatible with both 26 and 82 series,
# but only on Debian systems.
usage() {
echo >&2 "usage: $0 [--] command [arg ...]"
exit 2
}
# everything in a function to avoid environment pollution
runprog() {
local cmd me spath saveIFS pathelem tgt rltgt
# Detect operation mode. If this script is run via a symbolic link,
# look for the basename in the PATH and execute that.
if test -L "$0"; then
# symlink mode
cmd=$(basename "$0")
else
# regular mode
test x"$1" = x"--" && shift
test -n "$1" || usage
cmd=$1
shift
fi
# detect command to run, if necessary
case $cmd in
(*/*) ;;
(*)
# $cmd does not contain a '/'
# look in the PATH but avoid loops with myself
me=$(readlink -f "$0")
# append :/dev/null both to catch a trailing colon
# and for an easy abort condition
spath=$PATH:/dev/null
saveIFS=$IFS
IFS=:
for pathelem in $spath; do
if test x"$pathelem" = x"/dev/null"; then
echo >&2 E: eatmydata: \
"unable to find '$cmd' in PATH"
exit 1
fi
tgt=${pathelem:-.}/$cmd
if test -x "$tgt"; then
# still call whathever is in the path, even if it is a link,
# as there are programs relying on argv[0] content.
rltgt=$(readlink -f "$tgt")
test x"$rltgt" = x"$me" || break
fi
done
IFS=$saveIFS
cmd=$tgt
;;
esac
# set up environment
LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+"$LD_LIBRARY_PATH:"}/usr/lib/libeatmydata
LD_PRELOAD=${LD_PRELOAD:+"$LD_PRELOAD "}libeatmydata.so
export LD_LIBRARY_PATH LD_PRELOAD
# execute the command
exec "$cmd" "$@"
}
runprog "$@"
|
