diff options
Diffstat (limited to 'cloudinit/util.py')
| -rw-r--r-- | cloudinit/util.py | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/cloudinit/util.py b/cloudinit/util.py index 20916e53..0d21e11b 100644 --- a/cloudinit/util.py +++ b/cloudinit/util.py @@ -80,6 +80,8 @@ CONTAINER_TESTS = (['systemd-detect-virt', '--quiet', '--container'], ['running-in-container'], ['lxc-is-container']) +PROC_CMDLINE = None + def decode_binary(blob, encoding='utf-8'): # Converts a binary type into a text type using given encoding. @@ -1191,12 +1193,27 @@ def load_file(fname, read_cb=None, quiet=False, decode=True): def get_cmdline(): if 'DEBUG_PROC_CMDLINE' in os.environ: - cmdline = os.environ["DEBUG_PROC_CMDLINE"] + return os.environ["DEBUG_PROC_CMDLINE"] + + global PROC_CMDLINE + if PROC_CMDLINE is not None: + return PROC_CMDLINE + + if is_container(): + try: + contents = load_file("/proc/1/cmdline") + # replace nulls with space and drop trailing null + cmdline = contents.replace("\x00", " ")[:-1] + except Exception as e: + LOG.warn("failed reading /proc/1/cmdline: %s", e) + cmdline = "" else: try: cmdline = load_file("/proc/cmdline").strip() except: cmdline = "" + + PROC_CMDLINE = cmdline return cmdline @@ -1569,7 +1586,7 @@ def uptime(): try: if os.path.exists("/proc/uptime"): method = '/proc/uptime' - contents = load_file("/proc/uptime").strip() + contents = load_file("/proc/uptime") if contents: uptime_str = contents.split()[0] else: |