def do_acquire(self, waitflag=False):
locked = False
if waitflag:
blockflag = 0
else:
blockflag = fcntl.LOCK_NB
self.fd = posix.open(self.fn, O_CREAT | O_RDWR, 0600)
try:
fcntl.flock(self.fd, fcntl.LOCK_EX|blockflag)
# locked it
try:
posix.ftruncate(self.fd, 0)
posix.write(self.fd, `os.getpid()` + '\n')
locked = True
except:
self.do_release()
raise
except IOError, x:
if x.errno == errno.EWOULDBLOCK:
# failed to lock
posix.close(self.fd)
del self.fd
else:
raise
def SendPacket(self, packet):
packet = scapy.Ether(src=self._routermac, dst=self._mymac) / packet
try:
posix.write(self._tun.fileno(), str(packet))
except Exception, e:
if not self._stopped:
raise e
def SendRA(cls, netid, retranstimer=None, reachabletime=0):
validity = 300 # seconds
macaddr = cls.RouterMacAddress(netid)
lladdr = cls._RouterAddress(netid, 6)
if retranstimer is None:
# If no retrans timer was specified, pick one that's as long as the
# router lifetime. This ensures that no spurious ND retransmits
# will interfere with test expectations.
retranstimer = validity
# We don't want any routes in the main table. If the kernel doesn't support
# putting RA routes into per-interface tables, configure routing manually.
routerlifetime = validity if HAVE_AUTOCONF_TABLE else 0
ra = (scapy.Ether(src=macaddr, dst="33:33:00:00:00:01") /
scapy.IPv6(src=lladdr, hlim=255) /
scapy.ICMPv6ND_RA(reachabletime=reachabletime,
retranstimer=retranstimer,
routerlifetime=routerlifetime) /
scapy.ICMPv6NDOptSrcLLAddr(lladdr=macaddr) /
scapy.ICMPv6NDOptPrefixInfo(prefix=cls.IPv6Prefix(netid),
prefixlen=64,
L=1, A=1,
validlifetime=validity,
preferredlifetime=validity))
posix.write(cls.tuns[netid].fileno(), str(ra))
def readSensor(self):
fd = posix.open("/dev/i2c-%d" % self._i2cbus, posix.O_RDWR)
ioctl(fd, self.I2C_SLAVE, self.I2C_ADDR)
# wake AM2320 up, goes to sleep to not warm up and affect the humidity sensor
# This write will fail as AM2320 won't ACK this write
try:
posix.write(fd, b'\0x00')
except:
pass
time.sleep(0.001) #Wait at least 0.8ms, at most 3ms
# write at addr 0x03, start reg = 0x00, num regs = 0x04 */
try:
posix.write(fd, b'\x03\x00\x04')
except:
posix.close(fd)
return (0, 0, 1, "Device did not acknowledge request")
time.sleep(0.0016) #Wait at least 1.5ms for result
# Read out 8 bytes of result data
# Byte 0: Should be Modbus function code 0x03
# Byte 1: Should be number of registers to read (0x04)
# Byte 2: Humidity msb
# Byte 3: Humidity lsb
# Byte 4: Temperature msb
# Byte 5: Temperature lsb
# Byte 6: CRC lsb byte
# Byte 7: CRC msb byte
data = bytearray(posix.read(fd, 8))
posix.close(fd)
# Check data[0] and data[1]
if data[0] != 0x03 or data[1] != 0x04:
return (0, 0, 4, "First two read bytes are a mismatch")
# raise Exception("First two read bytes are a mismatch")
# CRC check
if self._calc_crc16(data[0:6]) != self._combine_bytes(
data[7], data[6]):
return (0, 0, 4, "CRC failed")
# raise Exception("CRC failed")
# Temperature resolution is 16Bit,
# temperature highest bit (Bit15) is equal to 1 indicates a
# negative temperature, the temperature highest bit (Bit15)
# is equal to 0 indicates a positive temperature;
# temperature in addition to the most significant bit (Bit14 ~ Bit0)
# indicates the temperature sensor string value.
# Temperature sensor value is a string of 10 times the
# actual temperature value.
temp = self._combine_bytes(data[4], data[5])
if temp & 0x8000:
temp = -(temp & 0x7FFF)
temp /= 10.0
humi = self._combine_bytes(data[2], data[3]) / 10.0
return (temp, humi, 0, '')
def SendRA(cls, netid, retranstimer=None, reachabletime=0):
validity = 300 # seconds
macaddr = cls.RouterMacAddress(netid)
lladdr = cls._RouterAddress(netid, 6)
if retranstimer is None:
# If no retrans timer was specified, pick one that's as long as the
# router lifetime. This ensures that no spurious ND retransmits
# will interfere with test expectations.
retranstimer = validity
# We don't want any routes in the main table. If the kernel doesn't support
# putting RA routes into per-interface tables, configure routing manually.
routerlifetime = validity if HAVE_AUTOCONF_TABLE else 0
ra = (scapy.Ether(src=macaddr, dst="33:33:00:00:00:01") /
scapy.IPv6(src=lladdr, hlim=255) /
scapy.ICMPv6ND_RA(reachabletime=reachabletime,
retranstimer=retranstimer,
routerlifetime=routerlifetime) /
scapy.ICMPv6NDOptSrcLLAddr(lladdr=macaddr) /
scapy.ICMPv6NDOptPrefixInfo(prefix=cls.IPv6Prefix(netid),
prefixlen=64,
L=1,
A=1,
validlifetime=validity,
preferredlifetime=validity))
posix.write(cls.tuns[netid].fileno(), str(ra))
def readSensor(self):
fd = posix.open("/dev/i2c-%d" % self._i2cbus, posix.O_RDWR)
ioctl(fd, self.I2C_SLAVE, self.I2C_ADDR)
try:
posix.write(fd, b'\0x00')
except:
pass
time.sleep(0.001)
posix.write(fd, b'\x03\x00\x04')
time.sleep(0.0016)
data = bytearray(posix.read(fd, 8))
if data[0] != 0x03 or data[1] != 0x04:
raise Exception("First two read bytes are a mismatch")
if self._calc_crc16(data[0:6]) != self._combine_bytes(
data[7], data[6]):
raise Exception("CRC failed")
temp = self._combine_bytes(data[4], data[5])
if temp & 0x8000:
temp = -(temp & 0x7FFF)
temp /= 10.0
humi = self._combine_bytes(data[2], data[3]) / 10.0
return (temp, humi)
def read_sensor(self):
fd = posix.open('/dev/i2c-%d' % self._i2cbus, posix.O_RDWR)
ioctl(fd, I2C_SLAVE, self.I2C_ADDR)
try:
posix.write(fd, b'\0x00') # wake up AM2320
except:
pass
time.sleep(0.01)
posix.write(
fd, b'\x03\x00\x04'
) # x03(function code) x00(starting address) x04(register length)
time.sleep(0.002)
data = bytearray(posix.read(fd, 8))
posix.close(fd)
if data[0] != 0x03 or data[
1] != 0x04: # Modbus function code (0x03), number of registers to read (0x04)
raise Exception('I2C read failure')
if self._calc_crc16(data[0:6]) != self._combine_bytes(
data[7], data[6]):
raise Exception('CRC failure')
humi = self._combine_bytes(data[2], data[3]) / 10.0
temp = self._combine_bytes(data[4], data[5])
if temp & 0x8000:
temp = -(temp & 0x7FFF)
temp /= 10.0
return (temp, humi)
def run_fifo(self):
size = 32768
cur = bytearray()
while self._running:
if self._fifo > 0 and self._fifo_read and self._monitoring:
# receive
try:
# buf = posix.read(self._fifo, len(buf))
# buf = os.read(self._fifo, size)
buf = os.read(self._fifo_read, size)
if buf:
for n in buf:
if n == 10: # new line as message termination
try:
msg = json.loads(cur.decode('utf8'))
self.on_rpc_message(msg)
except Exception as e:
error_logger.error(repr(e))
traceback_logger.error(
traceback.format_exc())
cur = bytearray()
else:
cur.append(n)
except (BrokenPipeError, IOError):
pass
# publish
count = 0
while self._content:
c = self._content.popleft()
# insert category, group and stream name
c[3]['c'] = c[0]
c[3]['g'] = c[1]
c[3]['s'] = c[2]
try:
# write to fifo
posix.write(self._fifo,
(json.dumps(c[3]) + '\n').encode('utf8'))
except (BrokenPipeError, IOError):
pass
except (TypeError, ValueError) as e:
error_logger.error(
"Monitor error sending message : %s" % repr(c))
traceback_logger.error(traceback.format_exc())
count += 1
if count > 10:
break
# don't waste the CPU, might need a condition on outgoing data and on select incoming
# but this will be replaced by an asyncio WS + REST API
time.sleep(0.001)
def test_ignore_ioerror_in_readall_if_nonempty_result(self):
# this is the behavior of regular files in CPython 2.7, as
# well as of _io.FileIO at least in CPython 3.3. This is
# *not* the behavior of _io.FileIO in CPython 3.4 or 3.5;
# see CPython's issue #21090.
import sys
try:
from posix import openpty, fdopen, write, close
except ImportError:
skip('no openpty on this platform')
read_fd, write_fd = openpty()
write(write_fd, 'Abc\n')
close(write_fd)
f = fdopen(read_fd)
# behavior on Linux: f.read() returns 'Abc\r\n', then the next time
# it raises IOError. Behavior on OS/X (Python 2.7.5): the close()
# above threw away the buffer, and f.read() always returns ''.
if sys.platform.startswith('linux'):
s = f.read()
assert s == 'Abc\r\n'
raises(IOError, f.read)
else:
s = f.read()
assert s == ''
s = f.read()
assert s == ''
f.close()
def test_ignore_ioerror_in_readall_if_nonempty_result(self):
# this is the behavior of regular files in CPython 2.7, as
# well as of _io.FileIO at least in CPython 3.3. This is
# *not* the behavior of _io.FileIO in CPython 3.4 or 3.5;
# see CPython's issue #21090.
import sys
try:
from posix import openpty, fdopen, write, close
except ImportError:
skip('no openpty on this platform')
if 'gnukfreebsd' in sys.platform:
skip('close() hangs forever on kFreeBSD')
read_fd, write_fd = openpty()
write(write_fd, 'Abc\n')
close(write_fd)
f = fdopen(read_fd)
# behavior on Linux: f.read() returns 'Abc\r\n', then the next time
# it raises IOError. Behavior on OS/X (Python 2.7.5): the close()
# above threw away the buffer, and f.read() always returns ''.
if sys.platform.startswith('linux'):
s = f.read()
assert s == 'Abc\r\n'
raises(IOError, f.read)
else:
s = f.read()
assert s == ''
s = f.read()
assert s == ''
f.close()
def _despertar(self, espera):
# wake AM2320 up, goes to sleep to not warm up and affect the humidity sensor
# This write will fail as AM2320 won't ACK this write
try:
posix.write(self._fd, b'\0x00')
except:
pass #se lanza excepcion al enviarle NULL
time.sleep(espera)
def SetSpeedup(speedup):
global f
speedup = float(speedup)
# Opening the file for reading and writing prevents blocking until a reader opens the file.
if f is None:
f = posix.open(FIFO, posix.O_RDWR | posix.O_CREAT)
posix.ftruncate(f, 0)
SEEK_SET = 0
posix.lseek(f, 0, SEEK_SET)
posix.write(f, struct.pack("f", speedup))
def Run(self):
"""
do_exit: For small pipelines
"""
#log('Writing %r', self.body_str)
posix.write(self.w, self.body_str)
#log('Wrote %r', self.body_str)
posix.close(self.w)
#log('Closed %d', self.w)
sys.exit(0) # Could this fail?
def readSensor(self):
fd = posix.open("/dev/i2c-%d" % self._i2cbus, posix.O_RDWR)
ioctl(fd, self.I2C_SLAVE, self.I2C_ADDR)
# wake up AM2320 sensor, it sleeps when not being
# called to keep from heating up and effecting temp, humidity
try:
posix.write(fd, b'\0x00')
except:
pass
time.sleep(0.001) # sleep at least 0.8ms
# write at addr 0x03, start register 0x00, n_registers = 0x04
posix.write(fd, b'\x03\x00\x04')
time.sleep(0.0016) # wait for sensor result min 1.5ms
# 8 bytes of data
# 0: modbus function code 0x03
# 1: n registers to read 0x04
# 2: humidity msb ( most significate byte )
# 3: humidity lsb ( least significate byte )
# 4: temp msb
# 5: temp lsb
# 6: CRC lsb
# 7: CRC msb
data = bytearray(posix.read(fd, 8))
# check data[0], data[1]
if data[0] != 0x03 or data[1] != 0x04:
print("First two bytes mismatch")
#CRC check
if self._calc_crc16(data[0:6]) != self._combine_bytes(data[7], data[6]):
pass
# temp resolution 16bits
# temp bit 15 == 1 means negative temperature, 0 positive
# temp in addition to most significant bit Bit14 ~ Bit0
# indicates string value
# sensor value is string of 10x actual temp
temp = self._combine_bytes(data[4], data[5])
if temp & 0x8000:
temp = -(temp & 0x7FFF) # wrap back to positive, and with 32767
temp /= 10.0
humidity = self._combine_bytes(data[2], data[3]) / 10.0
return (temp, humidity)
def set_registers(self, addresses, data):
# this is a direct implemetation of the Bosch bme280.c function
# i colud re write it for sliker memory management
length = len(data)
temp = bytearray((2 * length) - 1)
temp[0] = data[0]
if length > 1:
for i in range(1, length):
temp[(i * 2) - 1] = addresses[i]
temp[(i * 2)] = data[i]
buf = bytearray(1)
buf[0] = addresses[0]
buf += temp
posix.write(self._fd, buf)
def test_ignore_ioerror_in_readall_if_nonempty_result(self):
# this is the behavior of regular files in CPython 2.7, as
# well as of _io.FileIO at least in CPython 3.3. This is
# *not* the behavior of _io.FileIO in CPython 3.4 or 3.5;
# see CPython's issue #21090.
try:
from posix import openpty, fdopen, write, close
except ImportError:
skip('no openpty on this platform')
read_fd, write_fd = openpty()
write(write_fd, 'Abc\n')
close(write_fd)
f = fdopen(read_fd)
s = f.read()
assert s == 'Abc\r\n'
raises(IOError, f.read)
f.close()
def __getitem__(self, key):
addr = struct.pack('B', key)
if posix.write(self.fd, addr) != 1:
raise Exception()
ret_val = struct.unpack('B', posix.read(self.fd, 1))[0]
return ret_val
def make_tempfile(fn, pid):
tfn = os.path.join(os.path.dirname(fn), 'shlock%d.tmp' % pid)
errcount = 1000
while 1:
try:
fd = posix.open(tfn, O_EXCL | O_CREAT | O_RDWR, 0600)
posix.write(fd, '%d\n' % pid)
posix.close(fd)
return tfn
except OSError, x:
if (errcount > 0) and (x.errno == errno.EEXIST):
os.unlink(tfn)
errcount = errcount - 1
else:
raise
def test_ignore_ioerror_in_readall_if_nonempty_result(self):
# this is the behavior of regular files in CPython 2.7, as
# well as of _io.FileIO at least in CPython 3.3. This is
# *not* the behavior of _io.FileIO in CPython 3.4 or 3.5;
# see CPython's issue #21090.
try:
from posix import openpty, fdopen, write, close
except ImportError:
skip('no openpty on this platform')
read_fd, write_fd = openpty()
write(write_fd, 'Abc\n')
close(write_fd)
f = fdopen(read_fd)
s = f.read()
assert s == 'Abc\r\n'
raises(IOError, f.read)
f.close()
def __getitem__(self, key):
addr = struct.pack('B', key)
if posix.write(self.fd, addr) != 1:
raise Exception()
ret_val = struct.unpack('B', posix.read(self.fd, 1))[0]
return ret_val
def make_tempfile(fn, pid):
tfn = os.path.join(os.path.dirname(fn), 'shlock%d.tmp' % pid)
errcount = 1000
while 1:
try:
fd = posix.open(tfn, O_EXCL | O_CREAT | O_RDWR, 0600)
posix.write(fd, '%d\n' % pid)
posix.close(fd)
return tfn
except OSError, x:
if (errcount > 0) and (x.errno == errno.EEXIST):
os.unlink(tfn)
errcount = errcount - 1
else:
raise
def leerTemHume(self):
self._despertar(0.008)
# write command 0x03, start reg = 0x00, num regs = 0x04
posix.write(self._fd, b'\x03\x00\x04')
#Wait at least 1.5ms for result
time.sleep(0.0016)
# Read out 8 bytes of result data
# Byte 0: Should be Modbus function code 0x03
# Byte 1: Should be number of registers to read (0x04)
# Byte 2: Humidity msb
# Byte 3: Humidity lsb
# Byte 4: Temperature msb
# Byte 5: Temperature lsb
# Byte 6: CRC lsb byte
# Byte 7: CRC msb byte
data = bytearray(posix.read(self._fd, 8))
# Check data[0] and data[1] if not correct throw Exception
if data[0] != 0x03 or data[1] != 0x04:
raise Exception("First two bytes not as expected")
# CRC check
if self._calc_crc16(data[0:6]) != self._combine_bytes(data[7], data[6]):
raise Exception("CRC failed")
# Temperature resolution is 16Bit,
# temperature highest bit (Bit15) is equal to 1 indicates a
# negative temperature, the temperature highest bit (Bit15)
# is equal to 0 indicates a positive temperature;
# temperature in addition to the most significant bit (Bit14 ~ Bit0)
# indicates the temperature sensor string value.
# Temperature sensor value is a string of 10 times the
# actual temperature value.
temp = self._combine_bytes(data[4], data[5])
if temp & 0x8000:
temp = -(temp & 0x7FFF)
temp /= 10.0
humi = self._combine_bytes(data[2], data[3]) / 10.0
return (temp, humi)
def read(self, addr, _len):
if isinstance(addr, EnumMeta) and hasattr(addr, "ADDR"):
addr = addr.ADDR.value
elif isinstance(addr, Enum):
addr = addr.value
addr = struct.pack('B', addr)
if posix.write(self.fd, addr) != 1:
raise Exception()
return posix.read(self.fd, _len)
def read_keys(self, pin):
posix.write(self._fd, b'\x00')
keys = bytearray(posix.read(self._fd, 2))
keycode = (keys[1] & 0x1f) << 8 | keys[0]
# keys 0 to 9 and # & *
for i in range(12):
mask = 0x01 << i
if mask & keycode:
self._pads[i]._touch()
else:
self._pads[i]._release()
# proximity
mask = 0x01 << 12
if mask & keycode:
self.keypad._close_by()
else:
self.keypad._far_away()
def main():
Raise = False
try:
fd=posix.open("/dev/serial0", posix.O_RDWR |\
posix.O_NOCTTY | posix.O_NDELAY)
except:
Raise = True
if Raise:
raise Exception("UART busy."
" Try /dev/serial1, /dev/ttyS0,"
" /dev/ttyAMA0.")
options = termios.tcgetattr(fd)
options[0] = termios.IGNPAR
options[1] = 0
options[2]=termios.B9600 |\
termios.CS8 |\
termios.CLOCAL |\
termios.CREAD
options[3] = 0
termios.tcflush(fd, termios.TCIFLUSH)
termios.tcsetattr(fd, termios.TCSANOW, options)
while True:
try:
message = input("Producer :")
except EOFError:
print("")
break
binmess = bytearray(len(message))
for i in range(len(message)):
binmess[i] = ord(message[i])
posix.write(fd, binmess)
posix.close(fd)
def do_write(self, outfd):
if not self.out_buf[outfd]:
return
(rl, wl, el) = select.select([], [outfd], [outfd])
if outfd in wl:
length = posix.write(outfd, self.out_buf[outfd])
self.out_buf[outfd] = self.out_buf[outfd][length:]
if not self.out_buf[outfd]:
self.select_for_read(outfd)
del self.out_buf[outfd]
elif fd in el:
raise Exception('could not flush fd')
def do_write(self, outfd):
if not self.out_buf[outfd]:
return
(rl, wl, el) = select.select([], [outfd], [outfd])
if outfd in wl:
length = posix.write(outfd, self.out_buf[outfd])
self.out_buf[outfd] = self.out_buf[outfd][length:]
if not self.out_buf[outfd]:
self.select_for_read(outfd)
del self.out_buf[outfd]
elif outfd in el:
raise Exception('could not flush fd')
async def _write(self):
while True:
await asyncio.sleep(1 / 1000)
if self.fd != -1:
byte = await self._tx.get()
try:
res = posix.write(
self.fd, bytearray([byte] + [0 for _ in range(63)]))
except OSError:
print(sys.exc_info())
else:
self._timer = self.timeout_ms
print(res)
self._tx.task_done()
def readSensor(self):
fd = posix.open("/dev/i2c-%d" % self._i2cbus, posix.O_RDWR)
ioctl(fd, self.I2C_SLAVE, self.I2C_ADDR)
# wake AM2320 up, goes to sleep to not warm up and affect the humidity sensor
# This write will fail as AM2320 won't ACK this write
try:
posix.write(fd, b'\0x00')
except:
pass
time.sleep(0.001) #Wait at least 0.8ms, at most 3ms
# write at addr 0x03, start reg = 0x00, num regs = 0x04 */
posix.write(fd, b'\x03\x00\x04')
time.sleep(0.0016) #Wait at least 1.5ms for result
data = bytearray(posix.read(fd, 8))
# Check data[0] and data[1]
if data[0] != 0x03 or data[1] != 0x04:
raise Exception("First two read bytes are a mismatch")
# CRC check
if self._calc_crc16(data[0:6]) != self._combine_bytes(
data[7], data[6]):
raise Exception("CRC failed")
temp = self._combine_bytes(data[4], data[5])
if temp & 0x8000:
temp = -(temp & 0x7FFF)
temp /= 10.0
humi = self._combine_bytes(data[2], data[3]) / 10.0
return (temp, humi)
def write(self, addr, value):
if isinstance(addr, EnumMeta) and hasattr(addr, "ADDR"):
addr = addr.ADDR.value
if isinstance(value, Enum):
value = value.value
msg = struct.pack('B', addr)
if isinstance(value, bytes):
msg += value
else:
msg += struct.pack("B" * len(value), *value)
if posix.write(self.fd, msg) != len(msg):
raise Exception()
def _ApplyRedirect(self, r, waiter):
ok = True
if r.tag == redirect_e.PathRedirect:
if r.op_id in (Id.Redir_Great, Id.Redir_AndGreat): # > &>
# NOTE: This is different than >| because it respects noclobber, but
# that option is almost never used. See test/wild.sh.
mode = posix.O_CREAT | posix.O_WRONLY | posix.O_TRUNC
elif r.op_id == Id.Redir_Clobber: # >|
mode = posix.O_CREAT | posix.O_WRONLY | posix.O_TRUNC
elif r.op_id in (Id.Redir_DGreat, Id.Redir_AndDGreat): # >> &>>
mode = posix.O_CREAT | posix.O_WRONLY | posix.O_APPEND
elif r.op_id == Id.Redir_Less: # <
mode = posix.O_RDONLY
else:
raise NotImplementedError(r.op_id)
# NOTE: 0666 is affected by umask, all shells use it.
try:
target_fd = posix.open(r.filename, mode, 0666)
except OSError as e:
util.error("Can't open %r: %s", r.filename,
posix.strerror(e.errno))
return False
# Apply redirect
if not self._PushDup(target_fd, r.fd):
ok = False
# Now handle the extra redirects for aliases &> and &>>.
#
# We can rewrite
# stdout_stderr.py &> out-err.txt
# as
# stdout_stderr.py > out-err.txt 2>&1
#
# And rewrite
# stdout_stderr.py 3&> out-err.txt
# as
# stdout_stderr.py 3> out-err.txt 2>&3
if ok:
if r.op_id == Id.Redir_AndGreat:
if not self._PushDup(r.fd, 2):
ok = False
elif r.op_id == Id.Redir_AndDGreat:
if not self._PushDup(r.fd, 2):
ok = False
posix.close(target_fd) # We already made a copy of it.
# I don't think we need to close(0) because it will be restored from its
# saved position (10), which closes it.
#self._PushClose(r.fd)
elif r.tag == redirect_e.DescRedirect: # e.g. echo hi 1>&2
if r.op_id == Id.Redir_GreatAnd: # 1>&2
if not self._PushDup(r.target_fd, r.fd):
ok = False
elif r.op_id == Id.Redir_LessAnd: # 0<&5
# The only difference between >& and <& is the default file
# descriptor argument.
if not self._PushDup(r.target_fd, r.fd):
ok = False
else:
raise NotImplementedError
elif r.tag == redirect_e.HereRedirect:
# NOTE: Do these descriptors have to be moved out of the range 0-9?
read_fd, write_fd = posix.pipe()
if not self._PushDup(read_fd, r.fd): # stdin is now the pipe
ok = False
# We can't close like we do in the filename case above? The writer can
# get a "broken pipe".
self._PushClose(read_fd)
thunk = _HereDocWriterThunk(write_fd, r.body)
# TODO: Use PIPE_SIZE to save a process in the case of small here docs,
# which are the common case. (dash does this.)
start_process = True
#start_process = False
if start_process:
here_proc = Process(thunk)
# NOTE: we could close the read pipe here, but it doesn't really
# matter because we control the code.
# here_proc.StateChange()
pid = here_proc.Start()
# no-op callback
waiter.Register(pid, here_proc.WhenDone)
#log('Started %s as %d', here_proc, pid)
self._PushWait(here_proc, waiter)
# Now that we've started the child, close it in the parent.
posix.close(write_fd)
else:
posix.write(write_fd, r.body)
posix.close(write_fd)
return ok
def __setitem__(self, key, value):
msg = struct.pack('BB', key, value)
if posix.write(self.fd, msg) != 2:
raise Exception()
def send(self, sMessage):
if (self.wHandle != None):
posix.write(self.wHandle.fileno(), sMessage)
self.wHandle.flush()
import __nemesys__ import posix posix.write(1, __nemesys__.module_source(__name__))
def ReceiveEtherPacketOn(self, netid, packet):
posix.write(self.tuns[netid].fileno(), str(packet))
def ReceiveEtherPacketOn(self, netid, packet): posix.write(self.tuns[netid].fileno(), str(packet))
def SendPacket(self, packet):
packet = scapy.Ether(src=self._routermac, dst=self._mymac) / packet
try:
posix.write(self._tun.fileno(), str(packet))
except ValueError:
pass
def _write_command(self, cmd: int) -> None:
ret = posix.write(self._fd, struct.pack(">H", cmd))
if ret != 2:
raise CommunicationError("Failed to write two-byte I2C command, "
"write returned {}".format(ret))
def writeSomeData(self, data): try: setBlocking(False,1) return write(1,data) finally: setBlocking(True,1)
import fcntl
def SendPacket(self, packet):
packet = scapy.Ether(src=self._routermac, dst=self._mymac) / packet
try:
posix.write(self._tun.fileno(), str(packet))
except ValueError:
pass
def write(self, data):
dummy = posix.write(self.fd, data)
def write(self, data): dummy = posix.write(self.fd, data)