# enabling this will cause the node to ask for breakpoint-mode at startup
# production code should read False/False
-PROMPT_MODE=False
+PROMPT_MODE = False
# default for when prompt is turned off, or it's on but the timeout triggers
-BREAKPOINT_MODE=False
+BREAKPOINT_MODE = False
# verbose mode is just fine
-VERBOSE_MODE=True
+VERBOSE_MODE = True
# in seconds : if no input, proceed
-PROMPT_TIMEOUT=5
+PROMPT_TIMEOUT = 5
def prompt_for_breakpoint_mode ():
global BREAKPOINT_MODE
if PROMPT_MODE:
- default_answer=BREAKPOINT_MODE
- answer=''
+ default_answer = BREAKPOINT_MODE
+ answer = ''
if BREAKPOINT_MODE:
- display="[y]/n"
+ display = "[y]/n"
else:
- display="y/[n]"
- sys.stdout.write ("Want to run in breakpoint mode ? %s "%display)
+ display = "y/[n]"
+ sys.stdout.write ("Want to run in breakpoint mode ? {} ".format(display))
sys.stdout.flush()
- r,w,e = select.select ([sys.stdin],[],[],PROMPT_TIMEOUT)
+ r, w, e = select.select ([sys.stdin], [], [], PROMPT_TIMEOUT)
if r:
answer = string.strip(sys.stdin.readline())
else:
- sys.stdout.write("\nTimed-out (%d s)"%PROMPT_TIMEOUT)
+ sys.stdout.write("\nTimed-out ({}s)".format(PROMPT_TIMEOUT))
if answer:
- BREAKPOINT_MODE = ( answer == "y" or answer == "Y")
+ BREAKPOINT_MODE = (answer == "y" or answer == "Y")
else:
BREAKPOINT_MODE = default_answer
- label="Off"
+ label = "Off"
if BREAKPOINT_MODE:
- label="On"
- sys.stdout.write("\nCurrent BREAKPOINT_MODE is %s\n"%label)
+ label = "On"
+ sys.stdout.write("\nCurrent BREAKPOINT_MODE is {}\n".format(label))
def breakpoint (message, cmd = None):
if BREAKPOINT_MODE:
if cmd is None:
- cmd="/bin/sh"
- message=message+" -- Entering bash - type ^D to proceed"
+ cmd = "/bin/sh"
+ message = message + " -- Entering bash - type ^D to proceed"
print message
os.system(cmd)
########################################
-def makedirs( path ):
+def makedirs(path):
"""
from python docs for os.makedirs:
Throws an error exception if the leaf directory
otherwise. Does not test the writability of said directory.
"""
try:
- os.makedirs( path )
+ os.makedirs(path)
except OSError:
pass
try:
- os.listdir( path )
+ os.listdir(path)
except OSError:
- raise BootManagerException, "Unable to create directory tree: %s" % path
+ raise BootManagerException("Unable to create directory tree: {}".format(path))
return 1
-def removedir( path ):
+def removedir(path):
"""
remove a directory tree, return 1 if successful, a BootManagerException
if failure.
"""
try:
- os.listdir( path )
+ os.listdir(path)
except OSError:
return 1
try:
- shutil.rmtree( path )
- except OSError, desc:
- raise BootManagerException, "Unable to remove directory tree: %s" % path
+ shutil.rmtree(path)
+ except OSError as desc:
+ raise BootManagerException("Unable to remove directory tree: {}".format(path))
return 1
-def sysexec( cmd, log=None, fsck=False, shell=False ):
+def sysexec(cmd, log=None, fsck=False, shell=False):
"""
execute a system command, output the results to the logger
if log <> None
if shell or cmd.__contains__(">"):
prog = subprocess.Popen(cmd, shell=True)
if log is not None:
- log.write("sysexec (shell mode) >>> %s" % cmd)
+ log.write("sysexec (shell mode) >>> {}".format(cmd))
if VERBOSE_MODE:
- print "sysexec (shell mode) >>> %s" % cmd
+ print "sysexec (shell mode) >>> {}".format(cmd)
else:
prog = subprocess.Popen(shlex.split(cmd), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
if log is not None:
- log.write("sysexec >>> %s\n" % cmd)
+ log.write("sysexec >>> {}\n".format(cmd))
if VERBOSE_MODE:
- print "sysexec >>> %s" % cmd
+ print "sysexec >>> {}".format(cmd)
except OSError:
- raise BootManagerException, \
- "Unable to create instance of subprocess.Popen " \
- "for command: %s" % cmd
+ raise BootManagerException(
+ "Unable to create instance of subprocess.Popen "
+ "for command: {}".format(cmd))
try:
(stdoutdata, stderrdata) = prog.communicate()
except KeyboardInterrupt:
- raise BootManagerException, "Interrupted by user"
+ raise BootManagerException("Interrupted by user")
# log stdout & stderr
if log is not None:
if stdoutdata:
- log.write("==========stdout\n"+stdoutdata)
+ log.write("==========stdout\n" + stdoutdata)
if stderrdata:
- log.write("==========stderr\n"+stderrdata)
+ log.write("==========stderr\n" + stderrdata)
returncode = prog.wait()
# 32 - Fsck canceled by user request
# 128 - Shared library error
if returncode != 0 and returncode != 1:
- raise BootManagerException, "Running %s failed (rc=%d)" % (cmd,returncode)
+ raise BootManagerException("Running {} failed (rc={})".format(cmd, returncode))
else:
if returncode != 0:
- raise BootManagerException, "Running %s failed (rc=%d)" % (cmd,returncode)
+ raise BootManagerException("Running {} failed (rc={})".format(cmd, returncode))
prog = None
return 1
-def sysexec_chroot( path, cmd, log=None, shell=False):
+def sysexec_chroot(path, cmd, log=None, shell=False):
"""
same as sysexec, but inside a chroot
"""
release = os.uname()[2]
# 2.6.12 kernels need this
if release[:5] == "2.6.1":
- library = "%s/lib/libc-opendir-hack.so" % path
+ library = "{}/lib/libc-opendir-hack.so".format(path)
if not os.path.exists(library):
shutil.copy("./libc-opendir-hack.so", library)
preload = "/bin/env LD_PRELOAD=/lib/libc-opendir-hack.so"
- sysexec("chroot %s %s %s" % (path, preload, cmd), log, shell=shell)
+ sysexec("chroot {} {} {}".format(path, preload, cmd), log, shell=shell)
-def sysexec_chroot_noerr( path, cmd, log=None, shell=False ):
+def sysexec_chroot_noerr(path, cmd, log=None, shell=False):
"""
same as sysexec_chroot, but capture boot manager exceptions
"""
try:
- rc= 0
- rc= sysexec_chroot( cmd, log, shell=shell )
- except BootManagerException, e:
+ rc = 0
+ rc = sysexec_chroot(cmd, log, shell=shell)
+ except BootManagerException as e:
pass
return rc
-def sysexec_noerr( cmd, log=None, shell=False ):
+def sysexec_noerr(cmd, log=None, shell=False):
"""
same as sysexec, but capture boot manager exceptions
"""
try:
rc= 0
- rc= sysexec( cmd, log, shell=shell )
- except BootManagerException, e:
+ rc= sysexec(cmd, log, shell=shell)
+ except BootManagerException as e:
pass
return rc
-def chdir( dir ):
+def chdir(dir):
"""
change to a directory, return 1 if successful, a BootManagerException if failure
"""
try:
- os.chdir( dir )
+ os.chdir(dir)
except OSError:
- raise BootManagerException, "Unable to change to directory: %s" % dir
+ raise BootManagerException("Unable to change to directory: {}".format(dir))
return 1
-def removefile( filepath ):
+def removefile(filepath):
"""
removes a file, return 1 if successful, 0 if failure
"""
try:
- os.remove( filepath )
+ os.remove(filepath)
except OSError:
- raise BootManagerException, "Unable to remove file: %s" % filepath
+ raise BootManagerException("Unable to remove file: {}".format(filepath))
return 1
# from: http://forums.devshed.com/archive/t-51149/
# Ethernet-card-address-Through-Python-or-C
-def hexy(n):
- return "%02x" % (ord(n))
-
def get_mac_from_interface(ifname):
"""
given a device name, like eth0, return its mac_address.
SIOCGIFHWADDR = 0x8927 # magic number
- s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
+ s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
ifname = string.strip(ifname)
ifr = ifname + '\0'*(32-len(ifname))
try:
- r= fcntl.ioctl(s.fileno(),SIOCGIFHWADDR,ifr)
- addr = map(hexy,r[18:24])
- ret = (':'.join(map(str, addr)))
- except IOError, e:
+ r = fcntl.ioctl(s.fileno(), SIOCGIFHWADDR,ifr)
+ ret = ':'.join(["{:02x}".format(ord(n)) for n in r[18:24]])
+ except IOError as e:
ret = None
return ret
m = hashlib.sha1()
except:
import sha
- m=sha.new()
+ m = sha.new()
f = file(filename, 'rb')
while True:
# 256 KB seems ideal for speed/memory tradeoff
del block
return m.hexdigest()
except IOError:
- raise BootManagerException, "Cannot calculate SHA1 hash of %s" % filename
+ raise BootManagerException("Cannot calculate SHA1 hash of {}".format(filename))
git://git.onelab.eu / bootmanager.git / blobdiff