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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2013-02-26 02:48:19 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2013-02-26 02:55:51 +0100
commit5d9219ddc17d3cbbce111fe29443b1a205503e06 (patch)
tree2a4417cb1a90348e395ebbada0a19a3767739152 /utils/remap.sh
parent25b928645df760156a58aa707da56eae66a4ae77 (diff)
Add remap translator
* trans/remap.c: New file. * trans/Makefile (targets): Add remap. (SRCS): Add remap.c. (remap): Add rule. * utils/remap.sh: New script. * utils/Makefile (targets): Add remap. (special-targets): Add remap. (SRCS): Add remap.sh. * NEWS: Advertise new translator
Diffstat (limited to 'utils/remap.sh')
-rw-r--r--utils/remap.sh64
1 files changed, 64 insertions, 0 deletions
diff --git a/utils/remap.sh b/utils/remap.sh
new file mode 100644
index 00000000..106109e8
--- /dev/null
+++ b/utils/remap.sh
@@ -0,0 +1,64 @@
+#!/bin/sh
+# Execute a command in an environment where some paths are remapped
+#
+# Copyright (C) 2002, 2013 Free Software Foundation, Inc.
+#
+# This file is part of the GNU Hurd.
+#
+# The GNU Hurd 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 2, or (at
+# your option) any later version.
+#
+# The GNU Hurd 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, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+#
+
+USAGE="Usage: $0 [OPTION...] [FROM1 TO1 [FROM2 TO2 [...]] -- [COMMAND...]"
+DOC="Execute COMMAND in an environment where some paths are remapped."
+
+while :; do
+ case "$1" in
+ --help|"-?")
+ echo "$USAGE"
+ echo "$DOC"
+ echo ""
+ echo " -?, --help Give this help list"
+ echo " --usage Give a short usage message"
+ echo " -V, --version Print program version"
+ exit 0;;
+ --usage)
+ echo "Usage: $0 [-V?] [--help] [--usage] [--version]"
+ exit 0;;
+ --version|-V)
+ echo "STANDARD_HURD_VERSION_remap_"; exit 0;;
+ --)
+ shift
+ break;;
+ -*)
+ echo 1>&2 "$0: unrecognized option \`$1'"
+ echo 1>&2 "Try \`$0 --help' or \`$0 --usage' for more information";
+ exit 1;;
+ *)
+ MAPPED="$MAPPED $1"
+ break;;
+ esac
+done
+
+if [ $# -eq 0 ]; then
+ set -- ${SHELL:-/bin/sh}
+fi
+
+# We exec settrans, which execs the "fakeauth" command in the chroot context.
+# The `pwd` is evaluated here and now, and that result interpreted inside
+# the shell running under fakeauth to chdir there inside the chroot world.
+# That shell then execs our arguments as a command line.
+exec /bin/settrans --chroot \
+ /bin/sh -c "cd `pwd`; $*" \
+ -- / /hurd/remap $MAPPED