55 lines
1.9 KiB
Python
55 lines
1.9 KiB
Python
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import os
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import sys
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from subprocess import Popen, PIPE
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import gentooimgr.config
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def bind(mount=gentooimgr.config.GENTOO_MOUNT, verbose=True):
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mounts = [
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["mount", "--types", "proc", "/proc", os.path.join(mount, "proc")],
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["mount", "--rbind", "/sys", os.path.join(mount, "sys")],
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["mount", "--make-rslave", os.path.join(mount, "sys")],
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["mount", "--rbind", "/dev", os.path.join(mount, "dev")],
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["mount", "--make-rslave", os.path.join(mount, "dev")],
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["mount", "--bind", "/run", os.path.join(mount, "run")],
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["mount", "--make-slave", os.path.join(mount, "run")],
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]
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for mcmd in mounts:
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if verbose:
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print(f"\t:: {' '.join(mcmd)}")
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proc = Popen(mcmd, stdout=PIPE, stderr=PIPE)
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stdout, stderr = proc.communicate()
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if proc.returncode != 0:
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sys.stderr.write(f"{stderr}\n")
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sys.exit(proc.returncode)
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def unbind(mount=gentooimgr.config.GENTOO_MOUNT, verbose=True):
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os.chdir("/")
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if not os.path.exists(mount):
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sys.stderr.write(f"Mountpoint {mount} does not exist\n")
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return
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unmounts = [
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["umount", os.path.join(mount, 'dev', 'shm')],
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["umount", os.path.join(mount, 'dev', 'pts')],
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["umount", "-l", os.path.join(mount, 'dev')],
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["umount", "-R", mount]
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]
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for uncmd in unmounts:
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if verbose:
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print(f"\t:: {' '.join(uncmd)}")
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proc = Popen(uncmd)
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stdout, stderr = proc.communicate()
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if proc.returncode != 0:
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sys.stderr.write(f"{stderr}\n")
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continue
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def chroot(path=gentooimgr.config.GENTOO_MOUNT, shell="/bin/bash"):
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bind(mount=path)
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os.chroot(path)
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os.chdir(os.sep)
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os.system(shell)
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unchroot(path=path) # May fail if we do this automatically
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def unchroot(path=gentooimgr.config.GENTOO_MOUNT):
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unbind(mount=path)
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