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* targets: fix remaining targets for initramfs buildsFlorian Fainelli2013-06-281-2/+2
* targets: prepare for supporting normal and initramfs imagesFlorian Fainelli2013-06-271-8/+4
* base-files: input/button drivers get loaded before preinit by procdJohn Crispin2013-06-211-12/+0
* base-files: diag does not need to insmod any drivers, procd already did it fo...John Crispin2013-06-211-1/+0
* target: don't build jffs2 nor images by defaultJonas Gorski2013-06-052-2/+2
* kernel: update linux 3.8 to 3.8.13Gabor Juhos2013-05-261-1/+1
* kernel: move CONFIG_MIPS_SEAD3 to genericJonas Gorski2013-05-121-1/+0
* kernel: update linux 3.8 to 3.8.12Gabor Juhos2013-05-081-1/+1
* kernel: update linux 3.8 to 3.8.11Gabor Juhos2013-05-011-1/+1
* kernel: update linux 3.8 to 3.8.10Gabor Juhos2013-04-301-1/+1
* kernel: update linux 3.8 to 3.8.9Gabor Juhos2013-04-261-1/+1
* Change default IPv6 config to enable DHCPv6-PDSteven Barth2013-04-221-1/+1
* kernel: update linux 3.8 to 3.8.8Gabor Juhos2013-04-191-1/+1
* kernel: update linux 3.8 to 3.8.7Gabor Juhos2013-04-141-1/+1
* Adapt default network configuration for IPv6Steven Barth2013-04-091-0/+12
* kernel: update linux 3.8 to 3.8.6Gabor Juhos2013-04-061-1/+1
* kernel: update linux 3.8 to 3.8.3Gabor Juhos2013-03-152-2/+2
* adm5120: remove 3.7 supportGabor Juhos2013-03-1017-1038/+0
* adm5120: switch to 3.8Gabor Juhos2013-03-101-1/+1
* kernel: update linux 3.7 to 3.7.10Gabor Juhos2013-03-031-1/+1
* adm5120: add support for 3.8Gabor Juhos2013-02-2417-0/+1038
* adm5120: remove __dev{init,exit} annotationsGabor Juhos2013-02-243-5/+5
* adm5120: remove a superfluous patchGabor Juhos2013-02-221-13/+0
* adm5120: avoid warning caused by wrong AMBA irq valuesGabor Juhos2013-02-221-2/+2
* adm5120: migrate to common led helper functionsGabor Juhos2013-02-181-32/+4
* kernel: update linux 3.7 to 3.7.9Gabor Juhos2013-02-171-1/+1
* kernel: update linux 3.7 to 3.7.8Gabor Juhos2013-02-151-1/+1
* kernel: update linux 3.7 to 3.7.7Gabor Juhos2013-02-121-1/+1
* kernel: update linux 3.7 to 3.7.6Gabor Juhos2013-02-041-1/+1
* kernel: update linux 3.7 to 3.7.5Gabor Juhos2013-01-291-1/+1
* kernel: clean up crypto related kconfig optionsFelix Fietkau2013-01-271-16/+0
* kernel: update linux 3.7 to 3.7.4Gabor Juhos2013-01-241-1/+1
* kernel: update linux 3.7 to 3.7.3Gabor Juhos2013-01-181-1/+1
* adm5120: remove 3.6 supportGabor Juhos2013-01-1218-1059/+0
* adm5120: switch to 3.7Gabor Juhos2013-01-121-1/+1
* kernel: update linux 3.7 to 3.7.2Gabor Juhos2013-01-121-1/+1
* adm5120: add support for 3.7Gabor Juhos2013-01-0118-0/+1067
* adm5120: nuke 3.3 supportGabor Juhos2013-01-0119-1066/+0
* adm5120: switch to 3.6Gabor Juhos2013-01-011-1/+1
* adm5120: add support for 3.6Gabor Juhos2013-01-0118-0/+1059
* adm5120: remove NAND_NO_AUTOINCR flag from rb1xx.cGabor Juhos2013-01-012-1/+11
* adm5120: use mtd_read helper in trxsplit.cGabor Juhos2013-01-011-2/+1
* adm5120: don't include asm/system.h in adm5120-hcd.cGabor Juhos2013-01-011-1/+0
* Do not use deprecated path to functions.sh (/etc/functions.sh -> /lib/functio...Mirko Vogt2012-12-191-1/+1
* kernel: add missing USB configuration symbols after r34501Florian Fainelli2012-12-071-0/+2
* do no longer rename amba-pl010 serial devices namesFlorian Fainelli2012-12-035-58/+39
* remove common symbols from 3.3 configsGabor Juhos2012-11-291-2/+0
* drop GPIODEV platform codeJohn Crispin2012-10-1712-51/+0
* adm5120: move common routerboot definitions into a separate header fileGabor Juhos2012-09-092-92/+4
* bump to 3.3.8John Crispin2012-06-051-1/+1
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-05 20:34:02 +0000
########### ## Xen controller daemon ## Copyright (c) 2004, K A Fraser (University of Cambridge) ## Copyright (C) 2004, Mike Wray <mike.wray@hp.com> ## Copyright (C) 2005, XenSource Ltd ########################################################### import os import os.path import signal import stat import sys import threading import time import linecache import pwd import re import traceback import xen.lowlevel.xc from xen.xend.XendLogging import log from xen.xend import osdep from xen.util import mkdir import relocate import SrvServer from params import * XEND_PROCESS_NAME = 'xend' class Daemon: """The xend daemon. """ def __init__(self): self.traceon = False self.tracefile = None self.traceindent = 0 self.child = 0 def cleanup_xend(self, kill): """Clean up the Xend pidfile. If a running process is found, kills it if 'kill' is true. @param kill: whether to kill the process @return running process id or 0 """ running = 0 pid = read_pid(XEND_PID_FILE) if find_process(pid, XEND_PROCESS_NAME): if kill: os.kill(pid, signal.SIGTERM) else: running = pid if running == 0 and os.path.isfile(XEND_PID_FILE): os.remove(XEND_PID_FILE) return running def reloadConfig(self): """ """ pid = read_pid(XEND_PID_FILE) if find_process(pid, XEND_PROCESS_NAME): os.kill(pid, signal.SIGHUP) def status(self): """Returns the status of the xend daemon. The return value is defined by the LSB: 0 Running 3 Not running """ if self.cleanup_xend(False) == 0: return 3 else: return 0 def fork_pid(self): """Fork and write the pid of the child to XEND_PID_FILE. @return: pid of child in parent, 0 in child """ self.child = os.fork() if self.child: # Parent pidfile = open(XEND_PID_FILE, 'w') try: pidfile.write(str(self.child)) finally: pidfile.close() return self.child def daemonize(self): # Detach from TTY. # Become the group leader (already a child process) os.setsid() # Fork, this allows the group leader to exit, # which means the child can never again regain control of the # terminal if os.fork(): os._exit(0) # Detach from standard file descriptors, and redirect them to # /dev/null or the log as appropriate. # We open the log file first, so that we can diagnose a failure to do # so _before_ we close stderr. try: parent = os.path.dirname(XEND_DEBUG_LOG) mkdir.parents(parent, stat.S_IRWXU) fd = os.open(XEND_DEBUG_LOG, os.O_WRONLY|os.O_CREAT|os.O_APPEND) except Exception, exn: print >>sys.stderr, exn print >>sys.stderr, ("Xend failed to open %s. Exiting!" % XEND_DEBUG_LOG) sys.exit(1) os.close(0) os.close(1) os.close(2) if XEND_DEBUG: os.open('/dev/null', os.O_RDONLY) os.dup(fd) os.dup(fd) else: os.open('/dev/null', os.O_RDWR) os.dup(0) os.dup(fd) os.close(fd) print >>sys.stderr, ("Xend started at %s." % time.asctime(time.localtime())) def start(self, trace=0): """Attempts to start the daemons. The return value is defined by the LSB: 0 Success 4 Insufficient privileges """ xend_pid = self.cleanup_xend(False) if self.set_user(): return 4 os.chdir("/") if xend_pid > 0: # Trying to run an already-running service is a success. return 0 ret = 0 # If we're not going to create a daemon, simply # call the run method right here. if not XEND_DAEMONIZE: self.tracing(trace) self.run(None) return ret # we use a pipe to communicate between the parent and the child process # this way we know when the child has actually initialized itself so # we can avoid a race condition during startup r,w = os.pipe() if os.fork(): os.close(w) r = os.fdopen(r, 'r') try: s = r.read() finally: r.close() if not len(s): ret = 1 else: ret = int(s) else: os.close(r) # Child self.daemonize() self.tracing(trace) # If Xend proper segfaults, then we want to restart it. Thus, # we fork a child for running Xend itself, and if it segfaults # (or exits any way other than cleanly) then we run it again. # The first time through we want the server to write to the (r,w) # pipe created above, so that we do not exit until the server is # ready to receive requests. All subsequent restarts we don't # want this behaviour, or the pipe will eventually fill up, so # we just pass None into run in subsequent cases (by clearing w # in the parent of the first fork). On some operating systems, # restart is managed externally, so we won't fork, and just exit. while True: if not osdep.xend_autorestart: self.run(os.fdopen(w, 'w')) os._exit(0) pid = self.fork_pid() if pid: if w is not None: os.close(w) w = None (_, status) = os.waitpid(pid, 0) if os.WIFEXITED(status): code = os.WEXITSTATUS(status) log.info('Xend exited with status %d.', code) sys.exit(code) if os.WIFSIGNALED(status): sig = os.WTERMSIG(status) if sig in (signal.SIGINT, signal.SIGTERM): log.info('Xend stopped due to signal %d.', sig) sys.exit(0) else: log.fatal( 'Xend died due to signal %d! Restarting it.', sig) else: self.run(w and os.fdopen(w, 'w') or None) # if we reach here, the child should quit. os._exit(0) return ret def tracing(self, traceon): """Turn tracing on or off. @param traceon: tracing flag """ if traceon == self.traceon: return self.traceon = traceon if traceon: self.tracefile = open(XEND_TRACE_FILE, 'w+', 1) self.traceindent = 0 sys.settrace(self.trace) try: threading.settrace(self.trace) # Only in Python >= 2.3 except: pass def print_trace(self, string): for i in range(self.traceindent): ch = " " if (i % 5): ch = ' ' else: ch = '|' self.tracefile.write(ch) self.tracefile.write(string) def trace(self, frame, event, arg): if not self.traceon: print >>self.tracefile print >>self.tracefile, '-' * 20, 'TRACE OFF', '-' * 20 self.tracefile.close() self.tracefile = None return None if event == 'call': code = frame.f_code filename = code.co_filename m = re.search('.*xend/(.*)', filename) if not m: return None modulename = m.group(1) if modulename.endswith('.pyc'): modulename = modulename[:-1] if modulename == 'sxp.py' or \ modulename == 'XendLogging.py' or \ modulename == 'XendMonitor.py' or \ modulename == 'server/SrvServer.py': return None self.traceindent += 1 self.print_trace("> %s:%s\n" % (modulename, code.co_name)) elif event == 'line': filename = frame.f_code.co_filename lineno = frame.f_lineno self.print_trace("%4d %s" % (lineno, linecache.getline(filename, lineno))) elif event == 'return': code = frame.f_code filename = code.co_filename m = re.search('.*xend/(.*)', filename) if not m: return None modulename = m.group(1) self.print_trace("< %s:%s\n" % (modulename, code.co_name)) self.traceindent -= 1 elif event == 'exception': self.print_trace("! Exception:\n") (ex, val, tb) = arg traceback.print_exception(ex, val, tb, 10, self.tracefile) #del tb return self.trace def set_user(self): # Set the UID. try: os.setuid(pwd.getpwnam(XEND_USER)[2]) return 0 except KeyError: print >>sys.stderr, "Error: no such user '%s'" % XEND_USER return 1 def stop(self): return self.cleanup_xend(True) def run(self, status): try: log.info("Xend Daemon started") xc = xen.lowlevel.xc.xc() xinfo = xc.xeninfo() log.info("Xend changeset: %s.", xinfo['xen_changeset']) del xc try: from xen import VERSION log.info("Xend version: %s", VERSION) except ImportError: log.info("Xend version: Unknown.") relocate.listenRelocation() servers = SrvServer.create() servers.start(status) del servers except Exception, ex: print >>sys.stderr, 'Exception starting xend:', ex if XEND_DEBUG: traceback.print_exc() log.exception("Exception starting xend (%s)" % ex) if status: status.write('1') status.close() sys.exit(1) def instance(): global inst try: inst except: inst = Daemon() return inst def read_pid(pidfile): """Read process id from a file. @param pidfile: file to read @return pid or 0 """ if os.path.isfile(pidfile) and os.path.getsize(pidfile): try: f = open(pidfile, 'r') try: return int(f.read()) finally: f.close() except: return 0 else: return 0 def find_process(pid, name): """Search for a process. @param pid: process id @param name: process name @return: pid if found, 0 otherwise """ running = 0 if pid: lines = os.popen('ps %d 2>/dev/null' % pid).readlines() exp = '^ *%d.+%s' % (pid, name) for line in lines: if re.search(exp, line): running = pid break return running def main(argv = None): global XEND_DAEMONIZE XEND_DAEMONIZE = False if argv is None: argv = sys.argv try: daemon = instance() r,w = os.pipe() daemon.run(os.fdopen(w, 'w')) return 0 except Exception, exn: log.fatal(exn) return 1 if __name__ == "__main__": sys.exit(main())
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-05 20:34:01 +0000