#!/usr/bin/python
#
-# $Id$
-# $URL$
-#
# Copyright (c) 2003 Intel Corporation
# All rights reserved.
#
# expected /proc/partitions format
import os, sys, shutil
-import popen2
+import subprocess
+import shlex
import socket
import fcntl
import string
import exceptions
-import hashlib
from Exceptions import *
+####################
+# the simplest way to debug is to let the node take off,
+# ssh into it as root using the debug ssh key in /etc/planetlab
+# then go to /tmp/source
+# edit this file locally to turn on breakpoints if needed, then run
+# ./BootManager.py
+####################
### 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
+### global debugging settings
# 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 is just fine
VERBOSE_MODE=True
# in seconds : if no input, proceed
PROMPT_TIMEOUT=5
return 1
-
-def sysexec( cmd, log= None ):
+def sysexec( cmd, log=None, fsck=False, shell=False ):
"""
execute a system command, output the results to the logger
if log <> None
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:
+ try:
+ # Thierry - Jan. 6 2011
+ # would probably make sense to look for | here as well
+ # however this is fragile and hard to test thoroughly
+ # let the caller set 'shell' when that is desirable
+ if shell or cmd.__contains__(">"):
+ prog = subprocess.Popen(cmd, shell=True)
+ if log is not None:
+ log.write("sysexec (shell mode) >>> %s" % cmd)
+ if VERBOSE_MODE:
+ print "sysexec (shell mode) >>> %s" % 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)
+ if VERBOSE_MODE:
+ print "sysexec >>> %s" % cmd
+ except OSError:
raise BootManagerException, \
- "Unable to create instance of popen2.Popen4 " \
+ "Unable to create instance of subprocess.Popen " \
"for command: %s" % cmd
+ try:
+ (stdoutdata, stderrdata) = prog.communicate()
+ except KeyboardInterrupt:
+ raise BootManagerException, "Interrupted by user"
+ # log stdout & stderr
if log is not None:
- try:
- for line in prog.fromchild:
- log.write( line )
- except KeyboardInterrupt:
- raise BootManagerException, "Interrupted by user"
-
- returncode= prog.wait()
- if returncode != 0 and returncode != 256:
- raise BootManagerException, "Running %s failed (rc=%d)" % (cmd,returncode)
-
- prog= None
+ if stdoutdata:
+ log.write("==========stdout\n"+stdoutdata)
+ if stderrdata:
+ log.write("==========stderr\n"+stderrdata)
+
+ returncode = prog.wait()
+
+ if fsck:
+ # The exit code returned by fsck is the sum of the following conditions:
+ # 0 - No errors
+ # 1 - File system errors corrected
+ # 2 - System should be rebooted
+ # 4 - File system errors left uncorrected
+ # 8 - Operational error
+ # 16 - Usage or syntax error
+ # 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)
+ else:
+ if returncode != 0:
+ raise BootManagerException, "Running %s failed (rc=%d)" % (cmd,returncode)
+
+ prog = None
return 1
-def sysexec_chroot( path, cmd, log= None ):
+def sysexec_chroot( path, cmd, log=None, shell=False):
"""
same as sysexec, but inside a chroot
"""
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)
+ sysexec("chroot %s %s %s" % (path, preload, cmd), log, shell=shell)
-def sysexec_chroot_noerr( path, cmd, log= None ):
+def sysexec_chroot_noerr( path, cmd, log=None, shell=False ):
"""
same as sysexec_chroot, but capture boot manager exceptions
"""
try:
rc= 0
- rc= syexec_chroot( cmd, log )
+ rc= sysexec_chroot( cmd, log, shell=shell )
except BootManagerException, e:
pass
return rc
-def sysexec_noerr( cmd, log= None ):
+def sysexec_noerr( cmd, log=None, shell=False ):
"""
same as sysexec, but capture boot manager exceptions
"""
try:
rc= 0
- rc= sysexec( cmd, log )
+ rc= sysexec( cmd, log, shell=shell )
except BootManagerException, e:
pass
def sha1_file(filename):
"""Calculate sha1 hash of file."""
try:
- m = hashlib.sha1()
+ try:
+ import hashlib
+ m = hashlib.sha1()
+ except:
+ import sha
+ m=sha.new()
f = file(filename, 'rb')
while True:
# 256 KB seems ideal for speed/memory tradeoff
git://git.onelab.eu / bootmanager.git / blobdiff