set -e
+die() { echo >&2 "$@"; exit 1; }
+
+MAX_TRIES=4
+
+rand_bytes()
+{
+ n=$1
+
+ chars=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
+
+ dev_rand=/dev/urandom
+ if test -r "$dev_rand"; then
+ # Note: 256-length($chars) == 194; 3 copies of $chars is 186 + 8 = 194.
+ head -c$n "$dev_rand" | tr -c $chars 01234567$chars$chars$chars
+ return
+ fi
+
+ cmds='date; date +%N; free; who -a; w; ps auxww; ps ef; netstat -n'
+ data=$( (eval "$cmds") 2>&1 | gzip )
+
+ n_plus_50=$(expr $n + 50)
+
+ # Ensure that $data has length at least 50+$n
+ while :; do
+ len=$(echo "$data"|wc -c)
+ test $n_plus_50 -le $len && break;
+ data=$( (echo "$data"; eval "$cmds") 2>&1 | gzip )
+ done
+
+ echo "$data" \
+ | dd bs=1 skip=50 count=$n 2>/dev/null \
+ | tr -c $chars 01234567$chars$chars$chars
+}
+
+mkdtemp()
+{
+ case $# in
+ 2);;
+ *) die "Usage: mkdtemp DIR TEMPLATE";;
+ esac
+
+ destdir=$1
+ template=$2
+
+ case $template in
+ *XXXX) ;;
+ *) die "invalid template: $template (must have a suffix of at least 4 X's)";;
+ esac
+
+ fail=0
+
+ # First, try to use mktemp.
+ d=$(env -u TMPDIR mktemp -d -t -p "$destdir" "$template" 2>/dev/null) \
+ || fail=1
+
+ # The resulting name must be in the specified directory.
+ case $d in "$destdir"*);; *) fail=1;; esac
+
+ # It must have created the directory.
+ test -d "$d" || fail=1
+
+ # It must have 0700 permissions.
+ perms=$(ls -dgo "$d" 2>/dev/null) || fail=1
+ case $perms in drwx------*) ;; *) fail=1;; esac
+
+ test $fail = 0 && {
+ echo "$d"
+ return
+ }
+
+ # If we reach this point, we'll have to create a directory manually.
+
+ # Get a copy of the template without its suffix of X's.
+ base_template=$(echo "$template"|sed 's/XX*$//')
+
+ # Calculate how many X's we've just removed.
+ nx=$(expr length "$template" - length "$base_template")
+
+ err=
+ i=1
+ while :; do
+ X=$(rand_bytes $nx)
+ candidate_dir="$destdir/$base_template$X"
+ err=$(mkdir -m 0700 "$candidate_dir" 2>&1) \
+ && { echo "$candidate_dir"; return; }
+ test $MAX_TRIES -le $i && break;
+ i=$(expr $i + 1)
+ done
+ die "$err"
+}
+
STACKTRACE() {
trap - ERR;
i=0;
+++ /dev/null
-#!/bin/sh
-# Create a temporary directory, sort of like mktemp -d does.
-
-# Copyright (C) 2007 Red Hat, Inc. All rights reserved.
-#
-# This copyrighted material is made available to anyone wishing to use,
-# modify, copy, or redistribute it subject to the terms and conditions
-# of the GNU General Public License v.2.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-# Written by Jim Meyering.
-
-# Usage: mkdtemp /tmp phoey.XXXXXXXXXX
-
-# First, try to use the mktemp program.
-# Failing that, we'll roll our own mktemp-like function:
-# - try to get random bytes from /dev/urandom
-# - failing that, generate output from a combination of quickly-varying
-# sources and gzip. Ignore non-varying gzip header, and extract
-# "random" bits from there.
-# - given those bits, map to file-name bytes using tr, and try to create
-# the desired directory.
-# - make only $MAX_TRIES attempts
-
-ME=$(basename "$0")
-die() { echo >&2 "$ME: $@"; exit 1; }
-
-MAX_TRIES=4
-
-rand_bytes()
-{
- n=$1
-
- chars=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
-
- dev_rand=/dev/urandom
- if test -r "$dev_rand"; then
- # Note: 256-length($chars) == 194; 3 copies of $chars is 186 + 8 = 194.
- head -c$n "$dev_rand" | tr -c $chars 01234567$chars$chars$chars
- return
- fi
-
- cmds='date; date +%N; free; who -a; w; ps auxww; ps ef; netstat -n'
- data=$( (eval "$cmds") 2>&1 | gzip )
-
- n_plus_50=$(expr $n + 50)
-
- # Ensure that $data has length at least 50+$n
- while :; do
- len=$(echo "$data"|wc -c)
- test $n_plus_50 -le $len && break;
- data=$( (echo "$data"; eval "$cmds") 2>&1 | gzip )
- done
-
- echo "$data" \
- | dd bs=1 skip=50 count=$n 2>/dev/null \
- | tr -c $chars 01234567$chars$chars$chars
-}
-
-mkdtemp()
-{
- case $# in
- 2);;
- *) die "Usage: $ME DIR TEMPLATE";;
- esac
-
- destdir=$1
- template=$2
-
- case $template in
- *XXXX) ;;
- *) die "invalid template: $template (must have a suffix of at least 4 X's)";;
- esac
-
- fail=0
-
- # First, try to use mktemp.
- d=$(env -u TMPDIR mktemp -d -t -p "$destdir" "$template" 2>/dev/null) \
- || fail=1
-
- # The resulting name must be in the specified directory.
- case $d in "$destdir"*);; *) fail=1;; esac
-
- # It must have created the directory.
- test -d "$d" || fail=1
-
- # It must have 0700 permissions.
- perms=$(ls -dgo "$d" 2>/dev/null) || fail=1
- case $perms in drwx------*) ;; *) fail=1;; esac
-
- test $fail = 0 && {
- echo "$d"
- return
- }
-
- # If we reach this point, we'll have to create a directory manually.
-
- # Get a copy of the template without its suffix of X's.
- base_template=$(echo "$template"|sed 's/XX*$//')
-
- # Calculate how many X's we've just removed.
- nx=$(expr length "$template" - length "$base_template")
-
- err=
- i=1
- while :; do
- X=$(rand_bytes $nx)
- candidate_dir="$destdir/$base_template$X"
- err=$(mkdir -m 0700 "$candidate_dir" 2>&1) \
- && { echo "$candidate_dir"; return; }
- test $MAX_TRIES -le $i && break;
- i=$(expr $i + 1)
- done
- die "$err"
-}
-
-mkdtemp "$@"
git://sourceware.org / lvm2.git / commitdiff