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106 lines
3.4 KiB
Bash
106 lines
3.4 KiB
Bash
#!/usr/bin/env bash
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#
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# This module contains all chroot functionalities for JuNest.
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#
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# Dependencies:
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# - lib/utils/utils.sh
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# - lib/core/common.sh
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#
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# vim: ft=sh
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function _run_env_as_xroot(){
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local cmd=$1
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local backend_args="$2"
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local no_copy_files="$3"
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shift 3
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check_same_arch
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local uid=$UID
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# SUDO_USER is more reliable compared to SUDO_UID
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[ -z $SUDO_USER ] || uid=$SUDO_USER:$SUDO_GID
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local main_cmd="${SH[@]}"
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[ "$1" != "" ] && main_cmd="$(insert_quotes_on_spaces "$@")"
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# With chown the ownership of the files is assigned to the real user
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trap - QUIT EXIT ABRT KILL TERM INT
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trap "[ -z $uid ] || chown_cmd -R ${uid} ${JUNEST_HOME};" EXIT QUIT ABRT KILL TERM INT
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if ! $no_copy_files
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then
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copy_common_files
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fi
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JUNEST_ENV=1 $cmd $backend_args "$JUNEST_HOME" "${SH[@]}" "-c" "${main_cmd}"
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}
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#######################################
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# Run JuNest as real root via GRoot command.
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#
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# Globals:
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# JUNEST_HOME (RO) : The JuNest home directory.
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# UID (RO) : The user ID.
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# SUDO_USER (RO) : The sudo user ID.
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# SUDO_GID (RO) : The sudo group ID.
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# SH (RO) : Contains the default command to run in JuNest.
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# Arguments:
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# backend_args ($1) : The arguments to pass to backend program
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# no_copy_files ($2?) : If false it will copy some files in /etc
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# from host to JuNest environment.
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# cmd ($3-?) : The command to run inside JuNest environment.
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# Default command is defined by SH variable.
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# Returns:
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# $ARCHITECTURE_MISMATCH : If host and JuNest architecture are different.
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# Output:
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# - : The command output.
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#######################################
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function run_env_as_groot(){
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check_nested_env
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local backend_command="$1"
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local backend_args="$2"
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local no_copy_files="$3"
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shift 3
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[[ -z "$backend_command" ]] && backend_command="$GROOT"
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provide_common_bindings
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local bindings=${RESULT}
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unset RESULT
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_run_env_as_xroot "$backend_command $bindings" "$backend_args" "$no_copy_files" "$@"
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}
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#######################################
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# Run JuNest as real root via chroot command.
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#
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# Globals:
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# JUNEST_HOME (RO) : The JuNest home directory.
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# UID (RO) : The user ID.
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# SUDO_USER (RO) : The sudo user ID.
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# SUDO_GID (RO) : The sudo group ID.
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# SH (RO) : Contains the default command to run in JuNest.
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# Arguments:
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# backend_args ($1) : The arguments to pass to backend program
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# no_copy_files ($2?) : If false it will copy some files in /etc
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# from host to JuNest environment.
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# cmd ($3-?) : The command to run inside JuNest environment.
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# Default command is defined by SH variable.
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# Returns:
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# $ARCHITECTURE_MISMATCH : If host and JuNest architecture are different.
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# Output:
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# - : The command output.
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#######################################
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function run_env_as_chroot(){
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check_nested_env
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local backend_command="$1"
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local backend_args="$2"
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local no_copy_files="$3"
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shift 3
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[[ -z "$backend_command" ]] && backend_command=chroot_cmd
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_run_env_as_xroot "$backend_command" "$backend_args" "$no_copy_files" "$@"
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}
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