def linux_mounts()

in xar/deprecated/mount_xar.py [0:0]

• 16 lines of code
• 6 McCabe index (conditional complexity)

def linux_mounts():
    # On some systems, /etc/mtab is a symlink to /proc/mounts (which
    # is symlink ot /proc/self/mounts).  Avoid duplicates via
    # realpath.
    mounts = []
    mounts_files = set(os.path.realpath(s) for s in ["/proc/mounts", "/etc/mtab"])

    for filename in mounts_files:
        fh = open(filename)
        try:
            for line in fh:
                parts = line.rstrip().split()
                devname, mountpath, fstype = parts[:3]
                # mtab can be escaped; fix it up before calling
                # umount.  Details:
                # https://gnu.org/software/libc/manual/html_node/mtab.html
                # Note backslashes are just '\134' and not '\0134'
                # - special case.
                mountpath = mountpath.replace("\\134", "\\")
                for ch in " \t\r\n":
                    mountpath = mountpath.replace("\\" + oct(ord(ch)), ch)
                mounts.append((devname, mountpath, fstype))
        finally:
            fh.close()

    return mounts