diff options
Diffstat (limited to 'install-sh')
| -rwxr-xr-x | install-sh | 23 |
1 files changed, 15 insertions, 8 deletions
@@ -1,7 +1,7 @@ #!/bin/sh # install - install a program, script, or datafile -scriptversion=2013-12-25.23; # UTC +scriptversion=2014-09-12.12; # UTC # This originates from X11R5 (mit/util/scripts/install.sh), which was # later released in X11R6 (xc/config/util/install.sh) with the @@ -324,34 +324,41 @@ do # is incompatible with FreeBSD 'install' when (umask & 300) != 0. ;; *) + # $RANDOM is not portable (e.g. dash); use it when possible to + # lower collision chance tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$ - trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0 + trap 'ret=$?; rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null; exit $ret' 0 + # As "mkdir -p" follows symlinks and we work in /tmp possibly; so + # create the $tmpdir first (and fail if unsuccessful) to make sure + # that nobody tries to guess the $tmpdir name. if (umask $mkdir_umask && - exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1 + $mkdirprog $mkdir_mode "$tmpdir" && + exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1 then if test -z "$dir_arg" || { # Check for POSIX incompatibilities with -m. # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or # other-writable bit of parent directory when it shouldn't. # FreeBSD 6.1 mkdir -m -p sets mode of existing directory. - ls_ld_tmpdir=`ls -ld "$tmpdir"` + test_tmpdir="$tmpdir/a" + ls_ld_tmpdir=`ls -ld "$test_tmpdir"` case $ls_ld_tmpdir in d????-?r-*) different_mode=700;; d????-?--*) different_mode=755;; *) false;; esac && - $mkdirprog -m$different_mode -p -- "$tmpdir" && { - ls_ld_tmpdir_1=`ls -ld "$tmpdir"` + $mkdirprog -m$different_mode -p -- "$test_tmpdir" && { + ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"` test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1" } } then posix_mkdir=: fi - rmdir "$tmpdir/d" "$tmpdir" + rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" else # Remove any dirs left behind by ancient mkdir implementations. - rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null + rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null fi trap '' 0;; esac;; |