def GuppyMap(self):
""" Creates the device map """
gmkdevmap = self.config["grub/grub-mkdevicemap"]
if not os.path.exists(gmkdevmap):
# grub-2.00 and above does not have mkdevicemap - so skip it if we don't see it.
return
cmdobj = None
if self.testing:
cmdstr = "{gm} --no-floppy --device-map=/dev/null".format(
gm=gmkdevmap)
cmdobj = Popen(cmdstr,
bufsize=-1,
stdout=PIPE,
stderr=STDOUT,
shell=True)
else:
cmdobj = Popen([gmkdevmap, "--no-floppy"],
bufsize=-1,
stdout=PIPE,
stderr=STDOUT,
shell=False)
output = cmdobj.communicate()
if cmdobj.poll() != 0:
raise ExtensionError("{cmd}\n{out}".format(cmd=gmkdevmap,
out=output[0].decode()))
def grubProbe(self):
gprobe = "/usr/sbin/grub-probe"
if not os.path.exists(gprobe):
gprobe = "/sbin/grub-probe"
if not os.path.exists(gprobe):
raise ExtensionError("couldn't find grub-probe")
return gprobe
def BtrfsSubvol(self):
cmdobj = Popen("btrfs subvol list /",
bufsize=-1,
stdout=PIPE,
stderr=PIPE,
shell=False)
output = cmdobj.communicate()[0].decode()
retval = cmdobj.poll()
if retval != 0:
raise ExtensionError("btrfs command failed: %s" % output)
return output.split()[6]
def Guppy(self, argstring, fatal=True):
""" Probes a device """
gprobe = self.grubProbe()
cmd = shlex.split("{gcmd} {args}".format(gcmd=gprobe, args=argstring))
cmdobj = Popen(cmd, bufsize=-1, stdout=PIPE, stderr=PIPE, shell=False)
output = cmdobj.communicate()
retval = cmdobj.poll()
if fatal and retval != 0:
raise ExtensionError("{cmd} {args}\n{out}".format(cmd=gprobe, args=argstring, out=output[0].decode()))
else:
return retval, output[0].decode().strip("\n")
def Guppy(self,argstring, fatal=True):
gprobe = "/usr/sbin/grub-probe"
if not os.path.exists(gprobe):
gprobe = "/sbin/grub-probe"
if not os.path.exists(gprobe):
raise ExtensionError("couldn't find grub-probe")
cmd = shlex.split("{gcmd} {args}".format(gcmd = gprobe, args = argstring))
cmdobj = Popen(cmd, bufsize = -1, stdout = PIPE, stderr = STDOUT, shell = False)
output = cmdobj.communicate()
if cmdobj.poll() != 0:
print("ERROR calling {cmd} {args}, Output was:\n{out}".format(cmd = gprobe, args = argstring, out = output[0].decode()))
return None
else:
return output[0].decode().strip("\n")