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@ -16,26 +16,47 @@
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import fcntl
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import os
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def get_file_content(path, default=None, strip=True):
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'''
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Return the contents of a given file path
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:args path: path to file to return contents from
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:args default: value to return if we could not read file
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:args strip: controls if we strip whitespace from the result or not
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:returns: String with file contents (optionally stripped) or 'default' value
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'''
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data = default
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if os.path.exists(path) and os.access(path, os.R_OK):
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try:
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datafile = open(path)
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try:
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datafile = open(path)
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data = datafile.read()
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if strip:
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data = data.strip()
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if len(data) == 0:
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data = default
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finally:
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datafile.close()
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# try to not enter kernel 'block' mode, which prevents timeouts
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fd = datafile.fileno()
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flag = fcntl.fcntl(fd, fcntl.F_GETFL)
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fcntl.fcntl(fd, fcntl.F_SETFL, flag | os.O_NONBLOCK)
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except Exception:
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pass # not required to operate, but would have been nice!
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# actually read the data
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data = datafile.read()
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if strip:
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data = data.strip()
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if len(data) == 0:
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data = default
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except Exception:
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# ignore errors as some jails/containers might have readable permissions but not allow reads to proc
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# done in 2 blocks for 2.4 compat
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# ignore errors as some jails/containers might have readable permissions but not allow reads
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pass
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finally:
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datafile.close()
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return data
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