In order to support multiple tap devices in the same qemu virtual
machine.
Signed-off-by: Aníbal Limón <anibal.li...@linaro.org>
---
scripts/runqemu | 48 ++++++++++++++++++++++++------------------------
1 file changed, 24 insertions(+), 24 deletions(-)
diff --git a/scripts/runqemu b/scripts/runqemu
index 4079f2b17d..8a54c9ef9a 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -181,8 +181,7 @@ class BaseConfig(object):
self.audio_enabled = False
self.tcpserial_portnum = ''
self.custombiosdir = ''
- self.lock = ''
- self.lock_descriptor = None
+ self.lock_descriptors = {}
self.bitbake_e = ''
self.snapshot = False
self.wictypes = ('wic', 'wic.vmdk', 'wic.qcow2', 'wic.vdi')
@@ -204,30 +203,30 @@ class BaseConfig(object):
# avoid cleanup twice
self.cleaned = False
- def acquire_lock(self, error=True):
- logger.debug("Acquiring lockfile %s..." % self.lock)
+ def acquire_lock(self, lock, error=True):
+ logger.debug("Acquiring lockfile %s..." % lock)
try:
- self.lock_descriptor = open(self.lock, 'w')
- fcntl.flock(self.lock_descriptor, fcntl.LOCK_EX|fcntl.LOCK_NB)
+ self.lock_descriptors[lock] = open(lock, 'w')
+ fcntl.flock(self.lock_descriptors[lock],
fcntl.LOCK_EX|fcntl.LOCK_NB)
except Exception as e:
- msg = "Acquiring lockfile %s failed: %s" % (self.lock, e)
+ msg = "Acquiring lockfile %s failed: %s" % (lock, e)
if error:
logger.error(msg)
else:
logger.info(msg)
- if self.lock_descriptor:
- self.lock_descriptor.close()
- self.lock_descriptor = None
+ if self.lock_descriptors[lock]:
+ self.lock_descriptor[lock].close()
+ self.lock_descriptor[lock] = None
return False
return True
- def release_lock(self):
- if self.lock_descriptor:
- logger.debug("Releasing lockfile for tap device '%s'" % self.tap)
- fcntl.flock(self.lock_descriptor, fcntl.LOCK_UN)
- self.lock_descriptor.close()
- os.remove(self.lock)
- self.lock_descriptor = None
+ def release_lock(self, lock):
+ if self.lock_descriptors[lock]:
+ logger.debug("Releasing lockfile for tap device '%s'" % lock)
+ fcntl.flock(self.lock_descriptors[lock], fcntl.LOCK_UN)
+ self.lock_descriptors[lock].close()
+ os.remove(lock)
+ self.lock_descriptors[lock] = None
def get(self, key):
if key in self.d:
@@ -1016,8 +1015,8 @@ class BaseConfig(object):
if os.path.exists('%s.skip' % lockfile):
logger.info('Found %s.skip, skipping %s' % (lockfile, p))
continue
- self.lock = lockfile + '.lock'
- if self.acquire_lock(error=False):
+ lock = lockfile + '.lock'
+ if self.acquire_lock(lock, error=False):
tap = p
logger.info("Using preconfigured tap device %s" % tap)
logger.info("If this is not intended, touch %s.skip to make
runqemu skip %s." %(lockfile, tap))
@@ -1035,8 +1034,8 @@ class BaseConfig(object):
cmd = ('sudo', self.qemuifup, str(uid), str(gid),
self.bindir_native)
tap = subprocess.check_output(cmd).decode('utf-8').strip()
lockfile = os.path.join(lockdir, tap)
- self.lock = lockfile + '.lock'
- self.acquire_lock()
+ lock = lockfile + '.lock'
+ self.acquire_lock(lock)
self.cleantap = True
logger.debug('Created tap: %s' % tap)
@@ -1268,8 +1267,8 @@ class BaseConfig(object):
cmds = shlex.split(cmd)
logger.info('Running %s\n' % cmd)
pass_fds = []
- if self.lock_descriptor:
- pass_fds = [self.lock_descriptor.fileno()]
+ if self.lock_descriptors.keys():
+ pass_fds = [self.lock_descriptors[lock].fileno() for lock in
self.lock_descriptors.keys()]
process = subprocess.Popen(cmds, stderr=subprocess.PIPE,
pass_fds=pass_fds)
self.qemupid = process.pid
retcode = process.wait()
@@ -1291,7 +1290,8 @@ class BaseConfig(object):
cmd = ('sudo', self.qemuifdown, self.tap, self.bindir_native)
logger.debug('Running %s' % str(cmd))
subprocess.check_call(cmd)
- self.release_lock()
+ for lock in self.lock_descriptors.keys():
+ self.release_lock(lock)
if self.nfs_running:
logger.info("Shutting down the userspace NFS server...")
--
2.20.1
--
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