87 lines
2.8 KiB
Python
87 lines
2.8 KiB
Python
"""
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Copyright 2018 Oliver Smith
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This file is part of pmbootstrap.
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pmbootstrap is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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pmbootstrap is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with pmbootstrap. If not, see <http://www.gnu.org/licenses/>.
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"""
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import os
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import shutil
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import shlex
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import pmb.config
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import pmb.chroot
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import pmb.chroot.binfmt
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import pmb.helpers.run
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def executables_absolute_path():
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"""
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Get the absolute paths to the sh and chroot executables.
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"""
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ret = {}
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for binary in ["sh", "chroot"]:
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path = shutil.which(binary, path=pmb.config.chroot_host_path)
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if not path:
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raise RuntimeError("Could not find the '" + binary +
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"' executable. Make sure, that it is in" " your current user's PATH.")
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ret[binary] = path
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return ret
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def root(args, cmd, suffix="native", working_dir="/", log=True,
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auto_init=True, return_stdout=False, check=True):
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"""
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Run a command inside a chroot as root.
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:param log: When set to true, redirect all output to the logfile
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:param auto_init: Automatically initialize the chroot
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"""
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# Get and verify chroot folder
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chroot = args.work + "/chroot_" + suffix
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if not auto_init and not os.path.islink(chroot + "/bin/sh"):
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raise RuntimeError("Chroot does not exist: " + chroot)
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if auto_init:
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pmb.chroot.init(args, suffix)
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# Run the args with sudo chroot, and with cleaned environment
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# variables
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executables = executables_absolute_path()
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for i in range(len(cmd)):
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cmd[i] = shlex.quote(cmd[i])
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cmd_inner_shell = ("cd " + shlex.quote(working_dir) + ";" +
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" ".join(cmd))
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cmd_full = ["sudo", executables["sh"], "-c",
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"env -i" + # unset all
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" CHARSET=UTF-8" +
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" PATH=" + pmb.config.chroot_path +
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" SHELL=/bin/ash" +
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" HISTFILE=~/.ash_history" +
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" " + executables["chroot"] +
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" " + chroot +
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" sh -c " + shlex.quote(cmd_inner_shell)
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]
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# Generate log message
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log_message = "(" + suffix + ") % "
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if working_dir != "/":
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log_message += "cd " + working_dir + " && "
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log_message += " ".join(cmd)
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# Run the command
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return pmb.helpers.run.core(args, cmd_full, log_message, log,
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return_stdout, check)
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