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119 lines
3.6 KiB
Bash
119 lines
3.6 KiB
Bash
#!/usr/bin/env bash
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#
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# This module contains all proot 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_with_proot(){
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local proot_args="$1"
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shift
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if [ "$1" != "" ]
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then
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JUNEST_ENV=1 proot_cmd "${proot_args}" "${SH[@]}" "-c" "$(insert_quotes_on_spaces "${@}")"
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else
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JUNEST_ENV=1 proot_cmd "${proot_args}" "${SH[@]}"
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fi
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}
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function _run_env_with_qemu(){
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local proot_args="$1"
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source ${JUNEST_HOME}/etc/junest/info
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if [ "$JUNEST_ARCH" != "$ARCH" ]
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then
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local qemu_bin="qemu-$JUNEST_ARCH-static-$ARCH"
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local qemu_symlink="/tmp/${qemu_bin}-$RANDOM"
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trap - QUIT EXIT ABRT KILL TERM INT
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trap "[ -e ${qemu_symlink} ] && rm_cmd -f ${qemu_symlink}" EXIT QUIT ABRT KILL TERM INT
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warn "Emulating $NAME via QEMU..."
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[ -e ${qemu_symlink} ] || \
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ln_cmd -s ${JUNEST_HOME}/opt/qemu/${qemu_bin} ${qemu_symlink}
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proot_args="-q ${qemu_symlink} $proot_args"
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fi
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shift
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_run_env_with_proot "$proot_args" "${@}"
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}
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#######################################
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# Run JuNest as fakeroot.
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#
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# Globals:
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# JUNEST_HOME (RO) : The JuNest home directory.
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# EUID (RO) : The user 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 proot
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# cmd ($2-?) : 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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# $ROOT_ACCESS_ERROR : If the user is the real root.
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# Output:
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# - : The command output.
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#######################################
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function run_env_as_fakeroot(){
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(( EUID == 0 )) && \
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die_on_status $ROOT_ACCESS_ERROR "You cannot access with root privileges. Use --groot option instead."
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check_nested_env
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local backend_args="$1"
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shift
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copy_common_files
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provide_common_bindings
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local bindings=${RESULT}
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unset RESULT
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# An alternative is via -S option:
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#_run_env_with_qemu "-S ${JUNEST_HOME} $1" "${@:2}"
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_run_env_with_qemu "-0 ${bindings} -r ${JUNEST_HOME} $backend_args" "$@"
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}
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#######################################
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# Run JuNest as normal user.
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#
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# Globals:
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# JUNEST_HOME (RO) : The JuNest home directory.
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# EUID (RO) : The user 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 proot
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# cmd ($2-?) : 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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# $ROOT_ACCESS_ERROR : If the user is the real root.
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# Output:
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# - : The command output.
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#######################################
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function run_env_as_user(){
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(( EUID == 0 )) && \
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die_on_status $ROOT_ACCESS_ERROR "You cannot access with root privileges. Use --groot option instead."
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check_nested_env
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local backend_args="$1"
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shift
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# Files to bind are visible in `proot --help`.
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# This function excludes /etc/mtab file so that
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# it will not give conflicts with the related
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# symlink in the Arch Linux image.
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copy_common_files
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copy_file /etc/hosts.equiv
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copy_file /etc/netgroup
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copy_file /etc/networks
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# No need for localtime as it is setup during the image build
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#copy_file /etc/localtime
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copy_passwd_and_group
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provide_common_bindings
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local bindings=${RESULT}
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unset RESULT
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_run_env_with_qemu "${bindings} -r ${JUNEST_HOME} $backend_args" "$@"
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}
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