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- #!/usr/bin/env python
- import optparse
- import subprocess
- import sys
- import os
- parser = optparse.OptionParser(
- usage = """
- %prog [options]
- """)
- parser.add_option("-q", "--findqemu",
- help = "find a qemu beneath the process <pid>",
- action="store", dest="findqemu")
- options, args = parser.parse_args(sys.argv)
- if options.findqemu:
- #
- # Walk the process tree from the process specified looking for a qemu-system. Return its pid.
- #
- ps = subprocess.Popen(['ps', 'axww', '-o', 'pid,ppid,command'], stdout=subprocess.PIPE).communicate()[0]
- processes = ps.split('\n')
- nfields = len(processes[0].split()) - 1
- pids = {}
- commands = {}
- for row in processes[1:]:
- data = row.split(None, nfields)
- if len(data) != 3:
- continue
- if data[1] not in pids:
- pids[data[1]] = []
- pids[data[1]].append(data[0])
- commands[data[0]] = data[2]
- if options.findqemu not in pids:
- sys.stderr.write("No children found matching %s" % options.findqemu)
- sys.exit(1)
- parents = []
- newparents = pids[options.findqemu]
- while newparents:
- next = []
- for p in newparents:
- if p in pids:
- for n in pids[p]:
- if n not in parents and n not in next:
- next.append(n)
- if p not in parents:
- parents.append(p)
- newparents = next
- #print "Children matching %s:" % str(parents)
- for p in parents:
- # Need to be careful here since runqemu-internal runs "ldd qemu-system-xxxx"
- basecmd = commands[p].split()[0]
- basecmd = os.path.basename(basecmd)
- if "qemu-system" in basecmd:
- print p
- sys.exit(0)
- sys.exit(1)
- else:
- parser.print_help()
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