Hello, there!

pmb/chroot/root.py

@@ -0,0 +1,72 @@
+"""
+Copyright 2017 Oliver Smith
+
+This file is part of pmbootstrap.
+
+pmbootstrap 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 3 of the License, or
+(at your option) any later version.
+
+pmbootstrap 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 pmbootstrap.  If not, see <http://www.gnu.org/licenses/>.
+"""
+import os
+import shutil
+import shlex
+
+import pmb.config
+import pmb.chroot
+import pmb.chroot.binfmt
+import pmb.helpers.run
+
+
+def root(args, cmd, suffix="native", working_dir="/", log=True,
+         auto_init=True, return_stdout=False, check=True):
+    """
+    Run a command inside a chroot as root.
+
+    :param log: When set to true, redirect all output to the logfile
+    :param auto_init: Automatically initialize the chroot
+    """
+    # Get and verify chroot folder
+    chroot = args.work + "/chroot_" + suffix
+    if not auto_init and not os.path.islink(chroot + "/bin/sh"):
+        raise RuntimeError("Chroot does not exist: " + chroot)
+
+    pmb.chroot.init(args, suffix)
+
+    # Run the args with sudo chroot, and with cleaned environment
+    # variables
+    sh_bin = shutil.which("sh")
+    chroot_bin = shutil.which("chroot")
+    for i in range(len(cmd)):
+        cmd[i] = shlex.quote(cmd[i])
+
+    cmd_inner_shell = ("cd " + shlex.quote(working_dir) + ";" +
+                       " ".join(cmd))
+    cmd_full = ["sudo", sh_bin, "-c",
+                "unset $(env | cut -d= -f1);" +  # unset all
+                " CHARSET=UTF-8" +
+                " PATH=" + pmb.config.chroot_path +
+                " SHELL=/bin/ash" +
+                " HISTFILE=~/.ash_history" +
+                " " + chroot_bin +
+                " " + chroot +
+                " sh -c " + shlex.quote(cmd_inner_shell)
+                ]
+
+    # Generate log message
+    log_message = "(" + suffix + ") % "
+    if working_dir != "/":
+        log_message += "cd " + working_dir + " && "
+    log_message += " ".join(cmd)
+
+    # Run the command
+    return pmb.helpers.run.core(args, cmd_full, log_message, log,
+                                return_stdout, check)