diff options
Diffstat (limited to 'cloudinit/util.py')
-rw-r--r-- | cloudinit/util.py | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/cloudinit/util.py b/cloudinit/util.py index cae8b196..fb4ee5fe 100644 --- a/cloudinit/util.py +++ b/cloudinit/util.py @@ -1237,6 +1237,37 @@ def find_devs_with(criteria=None, oformat='device', return entries +def blkid(devs=None, disable_cache=False): + """Get all device tags details from blkid. + + @param devs: Optional list of device paths you wish to query. + @param disable_cache: Bool, set True to start with clean cache. + + @return: Dict of key value pairs of info for the device. + """ + if devs is None: + devs = [] + else: + devs = list(devs) + + cmd = ['blkid', '-o', 'full'] + if disable_cache: + cmd.extend(['-c', '/dev/null']) + cmd.extend(devs) + + # we have to decode with 'replace' as shelx.split (called by + # load_shell_content) can't take bytes. So this is potentially + # lossy of non-utf-8 chars in blkid output. + out, _ = subp(cmd, capture=True, decode="replace") + ret = {} + for line in out.splitlines(): + dev, _, data = line.partition(":") + ret[dev] = load_shell_content(data) + ret[dev]["DEVNAME"] = dev + + return ret + + def peek_file(fname, max_bytes): LOG.debug("Peeking at %s (max_bytes=%s)", fname, max_bytes) with open(fname, 'rb') as ifh: |