5 # The contents of this file are subject to the terms of the
6 # Common Development and Distribution License (the "License").
7 # You may not use this file except in compliance with the License.
9 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 # or http://www.opensolaris.org/os/licensing.
11 # See the License for the specific language governing permissions
12 # and limitations under the License.
14 # When distributing Covered Code, include this CDDL HEADER in each
15 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 # If applicable, add the following below this CDDL HEADER, with the
17 # fields enclosed by brackets "[]" replaced with your own identifying
18 # information: Portions Copyright [yyyy] [name of copyright owner]
32 def run_command(command, raise_on_try=True):
34 Wrapper function around subprocess.Popen
35 Returns a tuple of standard out and stander error.
36 Throws a RunTimeError if the command failed to execute or
37 if the command returns a non-zero exit status.
40 debug("Trying to run command %s" % (command), True)
42 p = subprocess.Popen(command,
43 stdout=subprocess.PIPE,
44 stderr=subprocess.PIPE,
46 outdata,errdata = p.communicate()
48 except OSError, message:
49 raise RuntimeError, "%s subprocess error:\n %s" % \
50 (command, str(message))
51 if err != 0 and raise_on_try:
52 raise RuntimeError, '%s failed with exit code %d\n%s' % \
53 (str(command), err, errdata)
54 return outdata,errdata
56 def debug(message, verbose):
58 Prints message out to standard error and syslog if
60 Note that the caller needs to first establish a syslog
61 context using syslog.openlog()
64 logging.getLogger('time-slider').debug(message)
66 def log_error(loglevel, message):
68 Trivial syslog wrapper that also outputs to stderr
69 Requires caller to have first opened a syslog session
70 using syslog.openlog()
72 logging.getLogger('time-slider').error(message)
74 def get_filesystem_capacity(path):
75 """Returns filesystem space usage of path as an integer percentage of
76 the entire capacity of path.
78 if not os.path.exists(path):
79 raise ValueError("%s is a non-existent path" % path)
82 unavailBlocks = f[statvfs.F_BLOCKS] - f[statvfs.F_BAVAIL]
83 capacity = int(math.ceil(100 * (unavailBlocks / float(f[statvfs.F_BLOCKS]))))
87 def get_available_size(path):
88 """Returns the available space in bytes under path"""
89 if not os.path.exists(path):
90 raise ValueError("%s is a non-existent path" % path)
92 free = long(f[statvfs.F_BAVAIL] * f[statvfs.F_FRSIZE])
96 def get_used_size(path):
97 """Returns the used space in bytes of fileystem associated
99 if not os.path.exists(path):
100 raise ValueError("%s is a non-existent path" % path)
103 unavailBlocks = f[statvfs.F_BLOCKS] - f[statvfs.F_BAVAIL]
104 used = long(unavailBlocks * f[statvfs.F_FRSIZE])
108 def get_total_size(path):
109 """Returns the total storage space in bytes of fileystem
110 associated with path"""
111 if not os.path.exists(path):
112 raise ValueError("%s is a non-existent path" % path)
114 total = long(f[statvfs.F_BLOCKS] * f[statvfs.F_FRSIZE])
118 def path_to_volume(path):
120 Tries to map a given path name to a gio Volume and
121 returns the gio.Volume object the enclosing
123 If it fails to find an enclosing volume it returns
126 gFile = gio.File(path)
128 mount = gFile.find_enclosing_mount()
133 volume = mount.get_volume()