+#!/usr/bin/python
+
# Copyright (c) 2003 Intel Corporation
# All rights reserved.
-
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-
-# * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-
-# * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following
-# disclaimer in the documentation and/or other materials provided
-# with the distribution.
-
-# * Neither the name of the Intel Corporation nor the names of its
-# contributors may be used to endorse or promote products derived
-# from this software without specific prior written permission.
-
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INTEL OR
-# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-# EXPORT LAWS: THIS LICENSE ADDS NO RESTRICTIONS TO THE EXPORT LAWS OF
-# YOUR JURISDICTION. It is licensee's responsibility to comply with any
-# export regulations applicable in licensee's jurisdiction. Under
-# CURRENT (May 2000) U.S. export regulations this software is eligible
-# for export from the U.S. and can be downloaded by or otherwise
-# exported or reexported worldwide EXCEPT to U.S. embargoed destinations
-# which include Cuba, Iraq, Libya, North Korea, Iran, Syria, Sudan,
-# Afghanistan and any other country to which the U.S. has embargoed
-# goods and services.
-
+#
+# Copyright (c) 2004-2006 The Trustees of Princeton University
+# All rights reserved.
+# expected /proc/partitions format
import os, sys, shutil
import popen2
+import socket
+import fcntl
+import string
+import exceptions
from Exceptions import *
+### handling breakpoints in the startup process
+import select, sys, string
+
+### global debug settings
+# NOTE. when BREAKPOINT_MODE turns out enabled,
+# you have to attend the boot phase, that would hang otherwise
+
+# enabling this will cause the node to ask for breakpoint-mode at startup
+# production code should read False/False
+PROMPT_MODE=False
+# default for when prompt is turned off, or it's on but the timeout triggers
+BREAKPOINT_MODE=False
+VERBOSE_MODE=False
+VERBOSE_MODE=True
+# in seconds : if no input, proceed
+PROMPT_TIMEOUT=5
+
+def prompt_for_breakpoint_mode ():
+
+ global BREAKPOINT_MODE
+ if PROMPT_MODE:
+ default_answer=BREAKPOINT_MODE
+ answer=''
+ if BREAKPOINT_MODE:
+ display="[y]/n"
+ else:
+ display="y/[n]"
+ sys.stdout.write ("Want to run in breakpoint mode ? %s "%display)
+ sys.stdout.flush()
+ 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)
+ if answer:
+ BREAKPOINT_MODE = ( answer == "y" or answer == "Y")
+ else:
+ BREAKPOINT_MODE = default_answer
+ label="Off"
+ if BREAKPOINT_MODE:
+ label="On"
+ sys.stdout.write("\nCurrent BREAKPOINT_MODE is %s\n"%label)
+
+def breakpoint (message, cmd = None):
+
+ if BREAKPOINT_MODE:
+
+ if cmd is None:
+ cmd="/bin/sh"
+ message=message+" -- Entering bash - type ^D to proceed"
+
+ print message
+ os.system(cmd)
+
+
+########################################
def makedirs( path ):
"""
from python docs for os.makedirs:
0 if failed. A BootManagerException is raised if the command
was unable to execute or was interrupted by the user with Ctrl+C
"""
+ if VERBOSE_MODE:
+ print ("sysexec >>> %s" % cmd)
prog= popen2.Popen4( cmd, 0 )
if prog is None:
raise BootManagerException, \
- "Unable to create instance of popen2.Popen3 " \
+ "Unable to create instance of popen2.Popen4 " \
"for command: %s" % cmd
if log is not None:
return 1
+def sysexec_chroot( path, cmd, log= None ):
+ """
+ same as sysexec, but inside a chroot
+ """
+ preload = ""
+ release = os.uname()[2]
+ # 2.6.12 kernels need this
+ if release[:5] == "2.6.1":
+ library = "%s/lib/libc-opendir-hack.so" % 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)
+
+
+def sysexec_chroot_noerr( path, cmd, log= None ):
+ """
+ same as sysexec_chroot, but capture boot manager exceptions
+ """
+ try:
+ rc= 0
+ rc= syexec_chroot( cmd, log )
+ except BootManagerException, e:
+ pass
+
+ return rc
+
+
def sysexec_noerr( cmd, log= None ):
"""
same as sysexec, but capture boot manager exceptions
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.
+ return None if the device doesn't exist.
+ """
+
+ SIOCGIFHWADDR = 0x8927 # magic number
+
+ 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:
+ ret = None
+
+ return ret
+
git://git.onelab.eu / bootmanager.git / blobdiff