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termux-chroot: Specify command to execute 

Allow a command to be specified when running termux-chroot.
Example:
```
$ termux-chroot ls /
bin  data  dev  etc  home  lib  proc  property_contexts  share  storage  system  tmp  usr  var  vendor
```
This makes it possible to run scripts that include a part that needs to
be run in a chrooted environment, like a compile script.
```
./configure
make
termux-chroot make install
```

Previously it had to be done like this:
```
./configure
make
termux-chroot
cd program
make install
exit
```
This commit is contained in:
Oliver Schmidhauser 2017-08-16 09:08:12 +02:00 committed by Fredrik Fornwall
parent 6e14ec2056
commit 8ceb581ba6
2 changed files with 34 additions and 11 deletions
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2
packages/proot/build.sh
View File

@ -3,7 +3,7 @@ TERMUX_PKG_DESCRIPTION="Emulate chroot, bind mount and binfmt_misc for non-root
# Just bump commit and version when needed:
_COMMIT=ccf3d7ab4804c1d01dd4d8f970da033a872c3152
TERMUX_PKG_VERSION=5.1.106
TERMUX_PKG_REVISION=1
TERMUX_PKG_REVISION=2
TERMUX_PKG_SRCURL=https://github.com/termux/proot/archive/${_COMMIT}.zip
TERMUX_PKG_SHA256=16c2a450dae0c321c2b949bab322ebcd8bff4d78ce989ef3024f2235d2b7fbbf
TERMUX_PKG_FOLDERNAME=proot-$_COMMIT

43
packages/proot/termux-chroot
View File

@ -1,12 +1,24 @@
#!/bin/sh
if [ $# != 0 ]; then
SCRIPTNAME=termux-chroot
show_usage () {
echo "Usage: $SCRIPTNAME [command]"
echo "termux-chroot: Setup a chroot to mimic a normal Linux file system"
echo ""
echo "Execute without arguments to run a chroot with traditional file system"
echo "hierarchy (having e.g. the folders /bin, /etc and /usr) within Termux."
exit
fi
echo "Execute a command in a chroot with traditional file system hierarchy"
echo "(having e.g. the folders /bin, /etc and /usr) within Termux."
echo "If run without argument, the default shell will be executed"
exit 0
}
while getopts :h option
do
case "$option" in
h) show_usage;;
?) echo "$SCRIPTNAME: illegal option -$OPTARG"; exit 1;
esac
done
shift $(($OPTIND-1))
# For the /system/bin/linker(64) to be found:
ARGS="-b /system:/system"
@ -46,12 +58,23 @@ ARGS="$ARGS --cwd=/home"
# Root of the file system:
ARGS="$ARGS -r $PREFIX/.."
# Program to execute:
export HOME=/home
# Shell to execute:
PROGRAM=/bin/bash
if [ -x $HOME/.termux/shell ]; then
PROGRAM=`readlink -f $HOME/.termux/shell`
fi
ARGS="$ARGS $PROGRAM -l"
export HOME=/home
$PREFIX/bin/proot $ARGS
# Execute shell if no command has been supplied
if [ -z "$1" ];then
ARGS="$ARGS $PROGRAM -l"
exec $PREFIX/bin/proot $ARGS
else
# When a command is executed directly instead of opening a shell run
# the command in the current working directory instead of in /home
ARGS="$ARGS --cwd=."
# Start supplied command with "sh -c" so things like these work:
# termux-chroot "make;make install"
# termux-chroot "SOME_CONFIG=value ./configure"
exec $PREFIX/bin/proot $ARGS sh -c "$*"
fi