def bootloader(blexec,
disk,
dom,
quiet=False,
blargs='',
kernel='',
ramdisk='',
kernel_args=''):
"""Run the boot loader executable on the given disk and return a
config image.
@param blexec Binary to use as the boot loader
@param disk Disk to run the boot loader on.
@param dom DomainInfo representing the domain being booted.
@param quiet Run in non-interactive mode, just booting the default.
@param blargs Arguments to pass to the bootloader."""
if not os.access(blexec, os.X_OK):
msg = "Bootloader isn't executable"
log.error(msg)
raise VmError(msg)
if not os.access(disk, os.R_OK):
msg = "Disk isn't accessible"
log.error(msg)
raise VmError(msg)
mkdir.parents("/var/run/xend/boot/", stat.S_IRWXU)
while True:
fifo = "/var/run/xend/boot/xenbl.%s" % (random.randint(0, 32000), )
try:
os.mkfifo(fifo, 0600)
except OSError, e:
if (e.errno != errno.EEXIST):
raise
break
def bootloader(blexec, disk, dom, quiet = False, blargs = '', kernel = '',
ramdisk = '', kernel_args = ''):
"""Run the boot loader executable on the given disk and return a
config image.
@param blexec Binary to use as the boot loader
@param disk Disk to run the boot loader on.
@param dom DomainInfo representing the domain being booted.
@param quiet Run in non-interactive mode, just booting the default.
@param blargs Arguments to pass to the bootloader."""
if not os.access(blexec, os.X_OK):
msg = "Bootloader isn't executable"
log.error(msg)
raise VmError(msg)
if not os.access(disk, os.R_OK):
msg = "Disk isn't accessible"
log.error(msg)
raise VmError(msg)
if os.uname()[0] == "NetBSD" and disk.startswith('/dev/'):
disk = disk.replace("/dev/", "/dev/r")
mkdir.parents("/var/run/xend/boot/", stat.S_IRWXU)
while True:
fifo = "/var/run/xend/boot/xenbl.%s" %(random.randint(0, 32000),)
try:
os.mkfifo(fifo, 0600)
except OSError, e:
if (e.errno != errno.EEXIST):
raise
break
def slurp(infile):
while 1:
line = infile.readline()
if line == "":
break
else:
log.error('%s', line.strip())
def read_exact(fd, size, errmsg):
buf = ''
while size != 0:
str = os.read(fd, size)
if not len(str):
log.error("read_exact: EOF trying to read %d (buf='%s')" % \
(size, buf))
raise XendError(errmsg)
size = size - len(str)
buf = buf + str
return buf
def bootloader(blexec, disk, quiet=0, vcpus=None, entry=None):
"""Run the boot loader executable on the given disk and return a
config image.
@param blexec Binary to use as the boot loader
@param disk Disk to run the boot loader on.
@param quiet Run in non-interactive mode, just booting the default.
@param vcpus Number of vcpus for the domain.
@param entry Default entry to boot."""
if not os.access(blexec, os.X_OK):
msg = "Bootloader isn't executable"
log.error(msg)
raise VmError(msg)
if not os.access(disk, os.R_OK):
msg = "Disk isn't accessible"
log.error(msg)
raise VmError(msg)
while True:
fifo = "/var/lib/xen/xenbl.%s" % (random.randint(0, 32000),)
if not os.path.exists(fifo):
break
os.mkfifo(fifo, 0600)
child = os.fork()
if not child:
args = [blexec]
if quiet:
args.append("-q")
args.append("--output=%s" % (fifo,))
if entry is not None:
args.append("--entry=%s" % (entry,))
args.append(disk)
try:
os.execvp(args[0], args)
except OSError, e:
print e
pass
os._exit(1)
def bootloader(blexec, disk, quiet = 0, vcpus = None, entry = None):
"""Run the boot loader executable on the given disk and return a
config image.
@param blexec Binary to use as the boot loader
@param disk Disk to run the boot loader on.
@param quiet Run in non-interactive mode, just booting the default.
@param vcpus Number of vcpus for the domain.
@param entry Default entry to boot."""
if not os.access(blexec, os.X_OK):
msg = "Bootloader isn't executable"
log.error(msg)
raise VmError(msg)
if not os.access(disk, os.R_OK):
msg = "Disk isn't accessible"
log.error(msg)
raise VmError(msg)
while True:
fifo = "/var/lib/xen/xenbl.%s" %(random.randint(0, 32000),)
if not os.path.exists(fifo):
break
os.mkfifo(fifo, 0600)
child = os.fork()
if (not child):
args = [ blexec ]
if quiet:
args.append("-q")
args.append("--output=%s" %(fifo,))
if entry is not None:
args.append("--entry=%s" %(entry,))
args.append(disk)
try:
os.execvp(args[0], args)
except OSError, e:
print e
pass
os._exit(1)
def bootloader(blexec,
disk,
dom,
quiet=False,
blargs='',
kernel='',
ramdisk='',
kernel_args=''):
"""Run the boot loader executable on the given disk and return a
config image.
@param blexec Binary to use as the boot loader
@param disk Disk to run the boot loader on.
@param dom DomainInfo representing the domain being booted.
@param quiet Run in non-interactive mode, just booting the default.
@param blargs Arguments to pass to the bootloader."""
if not os.access(blexec, os.X_OK):
msg = "Bootloader isn't executable"
log.error(msg)
raise VmError(msg)
# domUloader requires '--entry=foo' in blargs, which is derived from
# 'bootargs' entry in domain configuration file. Ensure it exists
# here so a reasonable error message can be returned.
if blexec.find('domUloader.py') != -1:
if blargs.find('entry') == -1:
msg = "domUloader requires specification of bootargs"
log.error(msg)
raise VmError(msg)
avail = False
for i in xrange(1, 500):
avail = os.access(disk, os.R_OK)
if avail:
break
time.sleep(.1)
if not avail:
msg = "Disk '%s' isn't accessible" % disk
log.error(msg)
raise VmError(msg)
if os.uname()[0] == "NetBSD" and disk.startswith('/dev/'):
disk = "/r".join(disk.rsplit("/", 1))
mkdir.parents("/var/run/xend/boot/", stat.S_IRWXU)
while True:
fifo = "/var/run/xend/boot/xenbl.%s" % (random.randint(0, 32000), )
try:
os.mkfifo(fifo, 0600)
except OSError, e:
if (e.errno != errno.EEXIST):
raise
break
def bootloader(blexec, disk, dom, quiet = False, blargs = '', kernel = '',
ramdisk = '', kernel_args = ''):
"""Run the boot loader executable on the given disk and return a
config image.
@param blexec Binary to use as the boot loader
@param disk Disk to run the boot loader on.
@param dom DomainInfo representing the domain being booted.
@param quiet Run in non-interactive mode, just booting the default.
@param blargs Arguments to pass to the bootloader."""
if not os.access(blexec, os.X_OK):
msg = "Bootloader isn't executable"
log.error(msg)
raise VmError(msg)
# domUloader requires '--entry=foo' in blargs, which is derived from
# 'bootargs' entry in domain configuration file. Ensure it exists
# here so a reasonable error message can be returned.
if blexec.find('domUloader.py') != -1:
if blargs.find('entry') == -1:
msg = "domUloader requires specification of bootargs"
log.error(msg)
raise VmError(msg)
avail = False
for i in xrange(1, 100):
avail = os.access(disk, os.R_OK)
if avail:
break
time.sleep(.1)
if not avail:
msg = "Disk '%s' isn't accessible" % disk
log.error(msg)
raise VmError(msg)
if os.uname()[0] == "NetBSD" and disk.startswith('/dev/'):
disk = "/r".join(disk.rsplit("/",1))
mkdir.parents("/var/run/xend/boot/", stat.S_IRWXU)
while True:
fifo = "/var/run/xend/boot/xenbl.%s" %(random.randint(0, 32000),)
try:
os.mkfifo(fifo, 0600)
except OSError, e:
if (e.errno != errno.EEXIST):
raise
break
del outbuf
os.waitpid(child, 0)
os.close(r)
os.close(m2)
os.close(m1)
if os.uname()[0] == 'SunOS' or os.uname()[0] == 'NetBSD':
os.close(s1)
os.unlink(fifo)
# Re-acquire the lock to cover the changes we're about to make
# when we return to domain creation.
domains.domains_lock.acquire()
if dom.bootloader_pid is None:
msg = "Domain was died while the bootloader was running."
log.error(msg)
raise VmError, msg
dom.bootloader_pid = None
if len(ret) == 0:
msg = "Boot loader didn't return any data!"
log.error(msg)
raise VmError, msg
pin = sxp.Parser()
pin.input(ret)
pin.input_eof()
blcfg = pin.val
return blcfg
del outbuf
os.waitpid(child, 0)
os.close(r)
os.close(m2)
os.close(m1)
if os.uname()[0] == 'SunOS' or os.uname()[0] == 'NetBSD':
os.close(s1)
os.unlink(fifo)
# Re-acquire the lock to cover the changes we're about to make
# when we return to domain creation.
domains.domains_lock.acquire()
if dom.bootloader_pid is None:
msg = "Domain was died while the bootloader was running."
log.error(msg)
raise VmError, msg
dom.bootloader_pid = None
if len(ret) == 0:
msg = "Boot loader didn't return any data!"
log.error(msg)
raise VmError, msg
pin = sxp.Parser()
pin.input(ret)
pin.input_eof()
blcfg = pin.val
return blcfg
