From e8f9d27c6d43ef368a4047ae5818018a20e11f62 Mon Sep 17 00:00:00 2001
From: Joshua Harlow <harlowja@yahoo-inc.com>
Date: Fri, 10 Oct 2014 17:34:32 -0700
Subject: Undo changes to the util file, not sure why that happened...

---
 cloudinit/util.py | 136 +++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 110 insertions(+), 26 deletions(-)

diff --git a/cloudinit/util.py b/cloudinit/util.py
index bdb0f268..58f7455c 100644
--- a/cloudinit/util.py
+++ b/cloudinit/util.py
@@ -191,11 +191,11 @@ def ExtendedTemporaryFile(**kwargs):
     return fh
 
 
-def fork_cb(child_cb, *args):
+def fork_cb(child_cb, *args, **kwargs):
     fid = os.fork()
     if fid == 0:
         try:
-            child_cb(*args)
+            child_cb(*args, **kwargs)
             os._exit(0)
         except:
             logexc(LOG, "Failed forking and calling callback %s",
@@ -1297,7 +1297,7 @@ def unmounter(umount):
         yield umount
     finally:
         if umount:
-            umount_cmd = ["umount", '-l', umount]
+            umount_cmd = ["umount", umount]
             subp(umount_cmd)
 
 
@@ -1346,37 +1346,70 @@ def mount_cb(device, callback, data=None, rw=False, mtype=None, sync=True):
     Mount the device, call method 'callback' passing the directory
     in which it was mounted, then unmount.  Return whatever 'callback'
     returned.  If data != None, also pass data to callback.
+
+    mtype is a filesystem type.  it may be a list, string (a single fsname)
+    or a list of fsnames.
     """
+
+    if isinstance(mtype, str):
+        mtypes = [mtype]
+    elif isinstance(mtype, (list, tuple)):
+        mtypes = list(mtype)
+    elif mtype is None:
+        mtypes = None
+
+    # clean up 'mtype' input a bit based on platform.
+    platsys = platform.system().lower()
+    if platsys == "linux":
+        if mtypes is None:
+            mtypes = ["auto"]
+    elif platsys.endswith("bsd"):
+        if mtypes is None:
+            mtypes = ['ufs', 'cd9660', 'vfat']
+        for index, mtype in enumerate(mtypes):
+            if mtype == "iso9660":
+                mtypes[index] = "cd9660"
+    else:
+        # we cannot do a smart "auto", so just call 'mount' once with no -t
+        mtypes = ['']
+
     mounted = mounts()
     with tempdir() as tmpd:
         umount = False
         if device in mounted:
             mountpoint = mounted[device]['mountpoint']
         else:
-            try:
-                mountcmd = ['mount']
-                mountopts = []
-                if rw:
-                    mountopts.append('rw')
-                else:
-                    mountopts.append('ro')
-                if sync:
-                    # This seems like the safe approach to do
-                    # (ie where this is on by default)
-                    mountopts.append("sync")
-                if mountopts:
-                    mountcmd.extend(["-o", ",".join(mountopts)])
-                if mtype:
-                    mountcmd.extend(['-t', mtype])
-                mountcmd.append(device)
-                mountcmd.append(tmpd)
-                subp(mountcmd)
-                umount = tmpd  # This forces it to be unmounted (when set)
-                mountpoint = tmpd
-            except (IOError, OSError) as exc:
-                raise MountFailedError(("Failed mounting %s "
-                                        "to %s due to: %s") %
+            for mtype in mtypes:
+                mountpoint = None
+                try:
+                    mountcmd = ['mount']
+                    mountopts = []
+                    if rw:
+                        mountopts.append('rw')
+                    else:
+                        mountopts.append('ro')
+                    if sync:
+                        # This seems like the safe approach to do
+                        # (ie where this is on by default)
+                        mountopts.append("sync")
+                    if mountopts:
+                        mountcmd.extend(["-o", ",".join(mountopts)])
+                    if mtype:
+                        mountcmd.extend(['-t', mtype])
+                    mountcmd.append(device)
+                    mountcmd.append(tmpd)
+                    subp(mountcmd)
+                    umount = tmpd  # This forces it to be unmounted (when set)
+                    mountpoint = tmpd
+                    break
+                except (IOError, OSError) as exc:
+                    LOG.debug("Failed mount of '%s' as '%s': %s",
+                              device, mtype, exc)
+                    pass
+            if not mountpoint:
+                raise MountFailedError("Failed mounting %s to %s due to: %s" %
                                        (device, tmpd, exc))
+
         # Be nice and ensure it ends with a slash
         if not mountpoint.endswith("/"):
             mountpoint += "/"
@@ -1924,3 +1957,54 @@ def pathprefix2dict(base, required=None, optional=None, delim=os.path.sep):
         raise ValueError("Missing required files: %s", ','.join(missing))
 
     return ret
+
+
+def read_meminfo(meminfo="/proc/meminfo", raw=False):
+    # read a /proc/meminfo style file and return
+    # a dict with 'total', 'free', and 'available'
+    mpliers = {'kB': 2**10, 'mB': 2 ** 20, 'B': 1, 'gB': 2 ** 30}
+    kmap = {'MemTotal:': 'total', 'MemFree:': 'free',
+            'MemAvailable:': 'available'}
+    ret = {}
+    for line in load_file(meminfo).splitlines():
+        try:
+            key, value, unit = line.split()
+        except ValueError:
+            key, value = line.split()
+            unit = 'B'
+        if raw:
+            ret[key] = int(value) * mpliers[unit]
+        elif key in kmap:
+            ret[kmap[key]] = int(value) * mpliers[unit]
+
+    return ret
+
+
+def human2bytes(size):
+    """Convert human string or integer to size in bytes
+      10M => 10485760
+      .5G => 536870912
+    """
+    size_in = size
+    if size.endswith("B"):
+        size = size[:-1]
+
+    mpliers = {'B': 1, 'K': 2 ** 10, 'M': 2 ** 20, 'G': 2 ** 30, 'T': 2 ** 40}
+
+    num = size
+    mplier = 'B'
+    for m in mpliers:
+        if size.endswith(m):
+            mplier = m
+            num = size[0:-len(m)]
+
+    try:
+        num = float(num)
+    except ValueError:
+        raise ValueError("'%s' is not valid input." % size_in)
+
+    if num < 0:
+        raise ValueError("'%s': cannot be negative" % size_in)
+
+    return int(num * mpliers[mplier])
+
-- 
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