FreeBSD: improvements and fixes for use on Azure

This patch targets to make FreeBSD 10.3 or 11 work on Azure. The
modifications abide by the rule of:
  * making as less modification as possible
  * delegate to the distro or datasource where possible.

The main modifications are:
 1. network configuration improvements, and movement into distro path.
 2. Fix setting of password.
    Password setting through "pw" can only work through pipe.
 3. Add 'root:wheel' to syslog_fix_perms field.
 4. Support resizing default file system (ufs)
 5. copy cloud.cfg for freebsd to /etc/cloud/cloud.cfg rather than
    /usr/local/etc/cloud/cloud.cfg.
 6. Azure specific changes:
    a. When reading the azure endpoint, search in a different path
       and read a different option name (option-245 vs. unknown-245).
        so, the lease file path should be generated according to platform.
    b. adjust the handling of ephemeral mounts for ufs filesystem and
       for finding the ephemeral device.
    c. fix mounting of cdrom

LP: #1636345

1 files changed, 51 insertions, 1 deletions

diff --git a/cloudinit/util.py b/cloudinit/util.py
index 22af99dd..27a98330 100644
--- a/cloudinit/util.py
+++ b/cloudinit/util.py
@@ -565,6 +565,10 @@ def is_ipv4(instr):
     return len(toks) == 4
 
 
+def is_FreeBSD():
+    return system_info()['platform'].startswith('FreeBSD')
+
+
 def get_cfg_option_bool(yobj, key, default=False):
     if key not in yobj:
         return default
@@ -2055,11 +2059,56 @@ def parse_mtab(path):
     return None
 
 
+def find_freebsd_part(label_part):
+    if label_part.startswith("/dev/label/"):
+        target_label = label_part[5:]
+        (label_part, err) = subp(['glabel', 'status', '-s'])
+        for labels in label_part.split("\n"):
+            items = labels.split()
+            if len(items) > 0 and items[0].startswith(target_label):
+                label_part = items[2]
+                break
+        label_part = str(label_part)
+    return label_part
+
+
+def get_path_dev_freebsd(path, mnt_list):
+    path_found = None
+    for line in mnt_list.split("\n"):
+        items = line.split()
+        if (len(items) > 2 and os.path.exists(items[1] + path)):
+            path_found = line
+            break
+    return path_found
+
+
+def get_mount_info_freebsd(path, log=LOG):
+    (result, err) = subp(['mount', '-p', path], rcs=[0, 1])
+    if len(err):
+        # find a path if the input is not a mounting point
+        (mnt_list, err) = subp(['mount', '-p'])
+        path_found = get_path_dev_freebsd(path, mnt_list)
+        if (path_found is None):
+            return None
+        result = path_found
+    ret = result.split()
+    label_part = find_freebsd_part(ret[0])
+    return "/dev/" + label_part, ret[2], ret[1]
+
+
 def parse_mount(path):
     (mountoutput, _err) = subp("mount")
     mount_locs = mountoutput.splitlines()
     for line in mount_locs:
         m = re.search(r'^(/dev/[\S]+) on (/.*) \((.+), .+, (.+)\)$', line)
+        if not m:
+            continue
+        # check whether the dev refers to a label on FreeBSD
+        # for example, if dev is '/dev/label/rootfs', we should
+        # continue finding the real device like '/dev/da0'.
+        devm = re.search('^(/dev/.+)p([0-9])$', m.group(1))
+        if (not devm and is_FreeBSD()):
+            return get_mount_info_freebsd(path)
         devpth = m.group(1)
         mount_point = m.group(2)
         fs_type = m.group(3)
@@ -2336,7 +2385,8 @@ def read_dmi_data(key):
     uname_arch = os.uname()[4]
     if not (uname_arch == "x86_64" or
             (uname_arch.startswith("i") and uname_arch[2:] == "86") or
-            uname_arch == 'aarch64'):
+            uname_arch == 'aarch64' or
+            uname_arch == 'amd64'):
         LOG.debug("dmidata is not supported on %s", uname_arch)
         return None