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* test/Makefile.in (srcdir, top_srcdir): Use @srcdir@, etc. (top_builddir, abs_srcdir, abs_top_builddir, abs_top_srcdir): Likewise. (so_name): Remove definition. (.bin-dir-stamp): No longer create symlink in $(DMDIR) tree. Prompted by suggestions from Alasdair Kergon. * test/t1000-lvcreate-usage.sh (cleanup_): Redirect to a file, rather than to /dev/null. Change wording of some test titles. Suggestions from Alasdair Kergon. * test/Makefile.in: Add a copyright notice. * test/lvm-utils.sh: Likewise. * test/mkdtemp: Likewise. * test/t0000-basic.sh: Likewise. * test/t1000-lvcreate-usage.sh: Likewise. * test/t3000-lvcreate-pvtags.sh: Likewise. * test/t4000-pv-range-overflow.sh: Likewise. * test/test-lib.sh: Likewise. Author: Jim Meyering <jim@meyering.net>
121 lines
3.1 KiB
Bash
Executable File
121 lines
3.1 KiB
Bash
Executable File
#!/bin/sh
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# Create a temporary directory, sort of like mktemp -d does.
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# Copyright (C) 2007 Red Hat, Inc. All rights reserved.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions
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# of the GNU General Public License v.2.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# Written by Jim Meyering.
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# Usage: mkdtemp /tmp phoey.XXXXXXXXXX
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# First, try to use the mktemp program.
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# Failing that, we'll roll our own mktemp-like function:
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# - try to get random bytes from /dev/urandom
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# - failing that, generate output from a combination of quickly-varying
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# sources and gzip. Ignore non-varying gzip header, and extract
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# "random" bits from there.
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# - given those bits, map to file-name bytes using tr, and try to create
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# the desired directory.
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# - make only $MAX_TRIES attempts
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ME=$(basename "$0")
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die() { echo >&2 "$ME: $@"; exit 1; }
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MAX_TRIES=4
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rand_bytes()
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{
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n=$1
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chars=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
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dev_rand=/dev/urandom
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if test -r "$dev_rand"; then
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# Note: 256-length($chars) == 194; 3 copies of $chars is 186 + 8 = 194.
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head -c$n "$dev_rand" | tr -c $chars 01234567$chars$chars$chars
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return
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fi
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cmds='date; date +%N; free; who -a; w; ps auxww; ps ef; netstat -n'
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data=$( (eval "$cmds") 2>&1 | gzip )
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n_plus_50=$(expr $n + 50)
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# Ensure that $data has length at least 50+$n
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while :; do
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len=$(echo "$data"|wc -c)
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test $n_plus_50 -le $len && break;
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data=$( (echo "$data"; eval "$cmds") 2>&1 | gzip )
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done
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echo "$data" \
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| dd bs=1 skip=50 count=$n 2>/dev/null \
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| tr -c $chars 01234567$chars$chars$chars
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}
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mkdtemp()
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{
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case $# in
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2);;
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*) die "Usage: $ME DIR TEMPLATE";;
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esac
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destdir=$1
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template=$2
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case $template in
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*XXXX) ;;
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*) die "invalid template: $template (must have a suffix of at least 4 X's)";;
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esac
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fail=0
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# First, try to use mktemp.
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d=$(env -u TMPDIR mktemp -d -t -p "$destdir" "$template" 2>/dev/null) \
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|| fail=1
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# The resulting name must be in the specified directory.
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case $d in "$destdir"*);; *) fail=1;; esac
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# It must have created the directory.
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test -d "$d" || fail=1
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# It must have 0700 permissions.
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perms=$(ls -dgo "$d" 2>/dev/null) || fail=1
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case $perms in drwx------*) ;; *) fail=1;; esac
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test $fail = 0 && {
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echo "$d"
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return
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}
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# If we reach this point, we'll have to create a directory manually.
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# Get a copy of the template without its suffix of X's.
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base_template=$(echo "$template"|sed 's/XX*$//')
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# Calculate how many X's we've just removed.
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nx=$(expr length "$template" - length "$base_template")
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err=
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i=1
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while :; do
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X=$(rand_bytes $nx)
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candidate_dir="$destdir/$base_template$X"
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err=$(mkdir -m 0700 "$candidate_dir" 2>&1) \
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&& { echo "$candidate_dir"; return; }
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test $MAX_TRIES -le $i && break;
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i=$(expr $i + 1)
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done
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die "$err"
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}
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mkdtemp "$@"
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