def test_os_fpathconf(self):
os = self.posix
assert os.fpathconf(1, "PC_PIPE_BUF") >= 128
with raises(OSError):
os.fpathconf(-1, "PC_PIPE_BUF")
with raises(ValueError):
os.fpathconf(1, "##")
def setUp(self):
super(TestCaseCanon, self).setUp()
self.echo = False
if sys.platform.lower().startswith('linux'):
# linux is 4096, N_TTY_BUF_SIZE.
self.max_input = 4096
self.echo = True
elif sys.platform.lower().startswith('sunos'):
# SunOS allows PC_MAX_CANON + 1; see
# https://bitbucket.org/illumos/illumos-gate/src/d07a59219ab7fd2a7f39eb47c46cf083c88e932f/usr/src/uts/common/io/ldterm.c?at=default#cl-1888
self.max_input = os.fpathconf(0, 'PC_MAX_CANON') + 1
else:
# All others (probably) limit exactly at PC_MAX_CANON
self.max_input = os.fpathconf(0, 'PC_MAX_CANON')
def __init__(self, path):
self._f = open(path, "r+b")
self._path_cache = {}
self._path_max = fpathconf(self._f.fileno(), "PC_PATH_MAX")
logger.info("PATH_MAX is %i", self._path_max)
br = BootRecord.from_fileobj(self._f)
assert br["ident"].rstrip("\0") == "clfs", repr(br["ident"])
assert br["version"] == 1
self.cluster_size = br["clrsize"]
self.clno_count_per_atab_cluster = self.cluster_size // clno_t.size
self.region_master_start = 0
self.region_master_length = br["mstrclrs"]
self.region_master_end = self.region_master_start + self.region_master_length
self.region_atab_start = self.region_master_end
self.region_atab_length = br["atabclrs"]
self.region_atab_end = self.region_atab_start + self.region_atab_length
self.region_data_start = self.region_atab_end
self.region_data_length = br["dataclrs"]
self.region_data_end = self.region_atab_start + self.region_data_length
self.fs_cluster_count = \
self.region_master_length \
+ self.region_atab_length \
+ self.region_data_length
self.fs_total_byte_size = self.fs_cluster_count * self.cluster_size
self._last_alloc_clno = self.region_data_end - 1
def get_defaults():
"""
Returns a dictionary of variables and their possibly os-dependent defaults.
"""
DEFAULTS = {}
# Determine the run-time pipe read/write buffer.
if 'PC_PIPE_BUF' in os.pathconf_names:
# unix
x, y = os.pipe()
DEFAULTS['PIPE_BUF'] = os.fpathconf(x, "PC_PIPE_BUF")
else:
# in Jython 16384
# on windows 512
# in jython in windows 512
DEFAULTS['PIPE_BUF'] = 512
# Determine the run-time socket buffers.
# Note that this number is determine on the papy server
# and inherited by the clients.
tcp_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
DEFAULTS['TCP_SNDBUF'] = tcp_sock.getsockopt(socket.SOL_SOCKET, \
socket.SO_SNDBUF)
DEFAULTS['TCP_RCVBUF'] = tcp_sock.getsockopt(socket.SOL_SOCKET, \
socket.SO_RCVBUF)
udp_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
DEFAULTS['UDP_SNDBUF'] = udp_sock.getsockopt(socket.SOL_SOCKET, \
socket.SO_SNDBUF)
DEFAULTS['UDP_RCVBUF'] = udp_sock.getsockopt(socket.SOL_SOCKET, \
socket.SO_RCVBUF)
# check the ip visible from the world.
DEFAULTS['WHATS_MYIP_URL'] = \
'http://www.whatismyip.com/automation/n09230945.asp'
return DEFAULTS
def setup_term():
"""
Terminal initialization
@return: Old terminal settings
"""
term = term_settings()
stdin = sys.stdin.fileno()
if term is None:
return None
try:
vdisable = os.fpathconf(stdin, "PC_VDISABLE")
except ValueError:
return
_saved_term = copy.deepcopy(term[-1])
# Disable special symbols
_todisable = [getattr(termios, x) for x in ("VQUIT", # ^\
"VINTR", # ^C
"VSUSP", # ^Z
"VLNEXT", # ^V
"VSTART", # ^Q
"VSTOP", # ^S
"VDISCARD", # ^O
)]
for _key in _todisable:
term[-1][_key] = vdisable
termios.tcsetattr(stdin, termios.TCSANOW, term)
return _saved_term
def get_defaults():
"""
Returns a dictionary of variables and their possibly os-dependent defaults.
"""
DEFAULTS = {}
# Determine the run-time pipe read/write buffer.
if 'PC_PIPE_BUF' in os.pathconf_names:
# unix
x, y = os.pipe()
DEFAULTS['PIPE_BUF'] = os.fpathconf(x, "PC_PIPE_BUF")
else:
# in Jython 16384
# on windows 512
# in jython in windows 512
DEFAULTS['PIPE_BUF'] = 512
# Determine the run-time socket buffers.
# Note that this number is determine on the papy server
# and inherited by the clients.
tcp_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
DEFAULTS['TCP_SNDBUF'] = tcp_sock.getsockopt(socket.SOL_SOCKET, \
socket.SO_SNDBUF)
DEFAULTS['TCP_RCVBUF'] = tcp_sock.getsockopt(socket.SOL_SOCKET, \
socket.SO_RCVBUF)
udp_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
DEFAULTS['UDP_SNDBUF'] = udp_sock.getsockopt(socket.SOL_SOCKET, \
socket.SO_SNDBUF)
DEFAULTS['UDP_RCVBUF'] = udp_sock.getsockopt(socket.SOL_SOCKET, \
socket.SO_RCVBUF)
# check the ip visible from the world.
DEFAULTS['WHATS_MYIP_URL'] = \
'http://www.whatismyip.com/automation/n09230945.asp'
return DEFAULTS
def _get_pos_and_size(stdin, stdout):
import termios
stdin_fileno = stdin.fileno()
vdisable = os.fpathconf(stdin_fileno, 'PC_VDISABLE')
backup = termios.tcgetattr(stdin_fileno)
new = termios.tcgetattr(stdin_fileno)
new[3] &= ~(termios.ECHO | termios.ICANON)
new[6][termios.VMIN] = 1
new[6][termios.VTIME] = 0
termios.tcsetattr(stdin_fileno, termios.TCSAFLUSH, new)
try:
position = _getposition(stdin, stdout)
if position:
y, x = position
try:
dimension = _getdimension_dtterm(stdin, stdout)
if not dimension:
stdout.write("\x1b[9999;9999H")
dimension = _getposition(stdin, stdout)
if dimension:
row, col = dimension
return (row, col, y, x)
finally:
stdout.write("\033[%d;%dH" % (y, x))
finally:
termios.tcsetattr(stdin_fileno, termios.TCSAFLUSH, backup)
return None
def test_communicate_pipe_buf(self):
# communicate() with writes larger than pipe_buf
# This test will probably deadlock rather than fail, if
# communicate() does not work properly.
x, y = os.pipe()
if mswindows:
pipe_buf = 512
else:
pipe_buf = os.fpathconf(x, "PC_PIPE_BUF")
os.close(x)
os.close(y)
p = subprocess.Popen([
sys.executable, "-c",
'import sys,os;'
'sys.stdout.write(sys.stdin.read(47));'
'sys.stderr.write("xyz"*%d);'
'sys.stdout.write(sys.stdin.read())' % pipe_buf
],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
self.addCleanup(p.stdout.close)
self.addCleanup(p.stderr.close)
self.addCleanup(p.stdin.close)
string_to_write = "abc" * pipe_buf
(stdout, stderr) = p.communicate(string_to_write)
self.assertEqual(stdout, string_to_write)
def test_communicate_pipe_buf(self):
# communicate() with writes larger than pipe_buf
# This test will probably deadlock rather than fail, if
# communicate() does not work properly.
x, y = os.pipe()
if mswindows:
pipe_buf = 512
else:
pipe_buf = os.fpathconf(x, "PC_PIPE_BUF")
os.close(x)
os.close(y)
p = subprocess.Popen([sys.executable, "-c",
'import sys,os;'
'sys.stdout.write(sys.stdin.read(47));'
'sys.stderr.write("xyz"*%d);'
'sys.stdout.write(sys.stdin.read())' % pipe_buf],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
self.addCleanup(p.stdout.close)
self.addCleanup(p.stderr.close)
self.addCleanup(p.stdin.close)
string_to_write = b"abc"*pipe_buf
(stdout, stderr) = p.communicate(string_to_write)
self.assertEqual(stdout, string_to_write)
def __init__(self, path):
self._f = open(path, "r+b")
self._path_cache = {}
self._path_max = fpathconf(self._f.fileno(), "PC_PATH_MAX")
logger.info("PATH_MAX is %i", self._path_max)
br = BootRecord.from_fileobj(self._f)
assert br["ident"].rstrip("\0") == "clfs", repr(br["ident"])
assert br["version"] == 1
self.cluster_size = br["clrsize"]
self.clno_count_per_atab_cluster = self.cluster_size // clno_t.size
self.region_master_start = 0
self.region_master_length = br["mstrclrs"]
self.region_master_end = self.region_master_start + self.region_master_length
self.region_atab_start = self.region_master_end
self.region_atab_length = br["atabclrs"]
self.region_atab_end = self.region_atab_start + self.region_atab_length
self.region_data_start = self.region_atab_end
self.region_data_length = br["dataclrs"]
self.region_data_end = self.region_atab_start + self.region_data_length
self.fs_cluster_count = \
self.region_master_length \
+ self.region_atab_length \
+ self.region_data_length
self.fs_total_byte_size = self.fs_cluster_count * self.cluster_size
self._last_alloc_clno = self.region_data_end - 1
def display_fpathconf():
DISP_VALUES = (
('PC_MAX_CANON', ('Max no. of bytes in a '
'terminal canonical input line.')),
('PC_MAX_INPUT', ('Max no. of bytes for which '
'space is available in a terminal input queue.')),
('PC_PIPE_BUF', ('Max no. of bytes which will '
'be written atomically to a pipe.')),
('PC_VDISABLE', 'Terminal character disabling value.')
)
FMT = '{name:<13} {value:<5} {description}'
# column header
print(FMT.format(name='name', value='value', description='description'))
print(FMT.format(name=('-' * 13), value=('-' * 5), description=('-' * 11)))
fd = sys.stdin.fileno()
for name, description in DISP_VALUES:
key = os.pathconf_names.get(name, None)
if key is None:
value = 'UNDEF'
else:
try:
value = os.fpathconf(fd, name)
except OSError as err:
value = 'OSErrno {0.errno}'.format(err)
if name == 'PC_VDISABLE':
value = hex(value)
print(FMT.format(name=name, value=value, description=description))
print()
def fpathconf(space, fd, w_name):
num = confname_w(space, w_name, os.pathconf_names)
try:
res = os.fpathconf(fd, num)
except OSError as e:
raise wrap_oserror(space, e)
return space.wrap(res)
def testLineReader(self):
p = os.pipe()
pipeSize = os.fpathconf(p[0], os.pathconf_names['PC_PIPE_BUF'])
rdr = util.LineReader(p[0])
writeFd = p[1]
os.write(writeFd, "hel")
assert(rdr.readlines() == [ ])
os.write(writeFd, "lo\n")
assert(rdr.readlines() == [ "hello\n" ])
os.write(writeFd, "hello\nworld\n")
assert(rdr.readlines() == [ "hello\n", "world\n" ])
os.write(writeFd, "hello\nthere")
assert(rdr.readlines() == [ "hello\n" ])
os.write(writeFd, "\nbig")
assert(rdr.readlines() == [ "there\n" ])
os.write(writeFd, "\nwide\nworld\n")
assert(rdr.readlines() == [ "big\n", "wide\n", "world\n" ])
os.close(writeFd)
assert(rdr.readlines() == None )
os.close(p[0])
def _get_pos_and_size(stdin, stdout):
import termios
stdin_fileno = stdin.fileno()
vdisable = os.fpathconf(stdin_fileno, 'PC_VDISABLE')
backup = termios.tcgetattr(stdin_fileno)
new = termios.tcgetattr(stdin_fileno)
new[3] &= ~(termios.ECHO | termios.ICANON)
new[6][termios.VMIN] = 1
new[6][termios.VTIME] = 0
termios.tcsetattr(stdin_fileno, termios.TCSAFLUSH, new)
try:
position = _getposition(stdin, stdout)
if position:
y, x = position
try:
dimension = _getdimension_dtterm(stdin, stdout)
if not dimension:
stdout.write("\x1b[9999;9999H")
dimension = _getposition(stdin, stdout)
if dimension:
row, col = dimension
return (row, col, y, x)
finally:
stdout.write("\033[%d;%dH" % (y, x))
finally:
termios.tcsetattr(stdin_fileno, termios.TCSAFLUSH, backup)
return None
def main():
"""Program entry point."""
fd = sys.stdin.fileno()
locale.setlocale(locale.LC_ALL, '')
encoding = locale.getpreferredencoding()
print('os.isatty({0}) => {1}'.format(fd, os.isatty(fd)))
print('locale.getpreferredencoding() => {0}'.format(encoding))
display_pathconf(names=os.pathconf_names,
getter=lambda name: os.fpathconf(fd, name))
try:
(iflag, oflag, cflag, lflag,
_, _, # input / output speed (bps macros)
ctlc) = termios.tcgetattr(fd)
except termios.error as err:
print('stdin is not a typewriter: {0}'.format(err))
else:
display_bitmask(kind=' Input Mode',
bitmap=BITMAP_IFLAG,
value=iflag)
display_bitmask(kind=' Output Mode',
bitmap=BITMAP_OFLAG,
value=oflag)
display_bitmask(kind='Control Mode',
bitmap=BITMAP_CFLAG,
value=cflag)
display_bitmask(kind=' Local Mode',
bitmap=BITMAP_LFLAG,
value=lflag)
display_ctl_chars(index=CTLCHAR_INDEX,
ctlc=ctlc)
print('os.ttyname({0}) => {1}'.format(fd, os.ttyname(fd)))
print('os.ctermid() => {0}'.format(os.ttyname(fd)))
def fpathconf(space, fd, w_name):
num = confname_w(space, w_name, os.pathconf_names)
try:
res = os.fpathconf(fd, num)
except OSError as e:
raise wrap_oserror(space, e)
return space.newint(res)
def testLineReader(self):
p = os.pipe()
pipeSize = os.fpathconf(p[0], os.pathconf_names['PC_PIPE_BUF'])
rdr = util.LineReader(p[0])
writeFd = p[1]
os.write(writeFd, "hel")
assert(rdr.readlines() == [ ])
os.write(writeFd, "lo\n")
assert(rdr.readlines() == [ "hello\n" ])
os.write(writeFd, "hello\nworld\n")
assert(rdr.readlines() == [ "hello\n", "world\n" ])
os.write(writeFd, "hello\nthere")
assert(rdr.readlines() == [ "hello\n" ])
os.write(writeFd, "\nbig")
assert(rdr.readlines() == [ "there\n" ])
os.write(writeFd, "\nwide\nworld\n")
assert(rdr.readlines() == [ "big\n", "wide\n", "world\n" ])
os.close(writeFd)
assert(rdr.readlines() == None )
os.close(p[0])
def main():
fd = sys.stdin.fileno()
locale.setlocale(locale.LC_ALL, "")
encoding = locale.getpreferredencoding()
print("os.isatty({0}) => {1}".format(fd, os.isatty(fd)))
print("locale.getpreferredencoding() => {0}".format(encoding))
display_conf(
kind="pathconf",
names=os.pathconf_names,
getter=lambda name: os.fpathconf(fd, name),
)
try:
(iflag, oflag, cflag, lflag, ispeed, ospeed, cc) = termios.tcgetattr(fd)
except termios.error as err:
print("stdin is not a typewriter: {0}".format(err))
else:
display_bitmask(kind="Input Mode", bitmap=BITMAP_IFLAG, value=iflag)
display_bitmask(kind="Output Mode", bitmap=BITMAP_OFLAG, value=oflag)
display_bitmask(kind="Control Mode", bitmap=BITMAP_CFLAG, value=cflag)
display_bitmask(kind="Local Mode", bitmap=BITMAP_LFLAG, value=lflag)
display_ctl_chars(index=CTLCHAR_INDEX, cc=cc)
try:
print("os.ttyname({0}) => {1}".format(fd, os.ttyname(fd)))
print("os.ctermid() => {0}".format(os.ctermid()))
except OSError as e:
# Travis fails on ttyname with errno 0 'Error'.
print("Error inspecting TTY: {0}".format(e))
def main():
"""Program entry point."""
fd = sys.stdin.fileno()
locale.setlocale(locale.LC_ALL, '')
encoding = locale.getpreferredencoding()
print('os.isatty({0}) => {1}'.format(fd, os.isatty(fd)))
print('locale.getpreferredencoding() => {0}'.format(encoding))
display_pathconf(names=os.pathconf_names,
getter=lambda name: os.fpathconf(fd, name))
try:
(
iflag,
oflag,
cflag,
lflag,
_,
_, # input / output speed (bps macros)
ctlc) = termios.tcgetattr(fd)
except termios.error as err:
print('stdin is not a typewriter: {0}'.format(err))
else:
display_bitmask(kind=' Input Mode', bitmap=BITMAP_IFLAG, value=iflag)
display_bitmask(kind=' Output Mode', bitmap=BITMAP_OFLAG, value=oflag)
display_bitmask(kind='Control Mode', bitmap=BITMAP_CFLAG, value=cflag)
display_bitmask(kind=' Local Mode', bitmap=BITMAP_LFLAG, value=lflag)
display_ctl_chars(index=CTLCHAR_INDEX, ctlc=ctlc)
print('os.ttyname({0}) => {1}'.format(fd, os.ttyname(fd)))
print('os.ctermid() => {0}'.format(os.ttyname(fd)))
def Say(text):
if len(text) + 1 > os.fpathconf(pw, "PC_PIPE_BUF"):
# This should never happen. POSIX guarantees that at least
# 512 bytes can be sent atomically, and we only ever need
# to send dotted decimal IPv4 addresses and short error
# messages. Neither of those should be anywhere near
# the limit.
Fatal("Message is too long for pipe atomicity")
print >> p, text
def Say( text ):
if len( text ) + 1 > os.fpathconf( pw, "PC_PIPE_BUF" ):
# This should never happen. POSIX guarantees that at least
# 512 bytes can be sent atomically, and we only ever need
# to send dotted decimal IPv4 addresses and short error
# messages. Neither of those should be anywhere near
# the limit.
Fatal( "Message is too long for pipe atomicity" )
print >> p, text
def __setupterm(self, fd):
term = termios.tcgetattr(fd)
## c_iflag
#IUTF8 = 16384
term[0] &= ~(termios.IGNBRK
| termios.BRKINT
| termios.PARMRK
| termios.ISTRIP
| termios.INLCR
| termios.IGNCR
| termios.ICRNL
| termios.IXON)
term[1] &= ~(termios.OPOST
| termios.ONLCR)
# c_cflag
c_cflag = term[2]
c_cflag &= ~(termios.CSIZE | termios.PARENB)
c_cflag |= termios.CS8
term[2] = c_cflag
## c_lflag
c_lflag = term[3]
c_lflag &= ~(termios.ECHO
| termios.ECHONL
| termios.ICANON
| termios.ISIG
| termios.IEXTEN)
term[3] = c_lflag
# c_cc
# this PTY is jast a filter, so it must not fire signals
vdisable = os.fpathconf(self._stdin_fileno, 'PC_VDISABLE')
VDSUSP = 11
c_cc = term[6]
c_cc[termios.VEOF] = vdisable # Ctrl-D
c_cc[termios.VINTR] = vdisable # Ctrl-C
c_cc[termios.VREPRINT] = vdisable # Ctrl-R
c_cc[termios.VSTART] = vdisable # Ctrl-Q
c_cc[termios.VSTOP] = vdisable # Ctrl-S
c_cc[termios.VLNEXT] = vdisable # Ctrl-V
c_cc[termios.VWERASE] = vdisable # Ctrl-W
c_cc[termios.VKILL] = vdisable # Ctrl-X
c_cc[termios.VSUSP] = vdisable # Ctrl-Z
c_cc[termios.VQUIT] = vdisable # Ctrl-\
c_cc[VDSUSP] = vdisable # Ctrl-Y
termios.tcsetattr(fd, termios.TCSANOW, term)
def display_fpathconf():
"""Program entry point."""
if not hasattr(os, "pathconf_names"):
return
disp_values = (
('PC_MAX_CANON', ('Max no. of bytes in a '
'terminal canonical input line.')),
('PC_MAX_INPUT', ('Max no. of bytes for which '
'space is available in a terminal input queue.')),
('PC_PIPE_BUF', ('Max no. of bytes which will '
'be written atomically to a pipe.')),
# to explain in more detail: PC_VDISABLE is the reference character in
# the pairing output for bin/display-terminalinfo.py: if the value
# matches (\xff), then that special control character is disabled, fe:
#
# Index Name Special Character Default Value
# VEOF EOF ^D
# VEOL EOL _POSIX_VDISABLE
#
# irregardless, this value is almost always \xff.
('PC_VDISABLE', 'Terminal character disabling value.'))
fmt = '{name:<13} {value:<10} {description:<11}'
# column header
print(fmt.format(name='name', value='value', description='description'))
print(fmt.replace('<', '-<').format(name='-', value='-', description='-'))
fd = sys.stdin.fileno()
for name, description in disp_values:
key = os.pathconf_names.get(name, None)
if key is None:
value = 'UNDEF'
else:
try:
value = os.fpathconf(fd, name)
if name == 'PC_VDISABLE':
value = r'\x{0:02x}'.format(value)
except OSError as err:
value = 'OSErrno {0.errno}'.format(err)
print(fmt.format(name=name, value=value, description=description))
print()
def _start_magma(self):
# Signal handlers are inherited by forked processes, and we can't easily
# reset it from the subprocess. Since kernelapp ignores SIGINT except in
# message handlers, we need to temporarily reset the SIGINT handler here
# so that magma and its children are interruptible.
sig = signal.signal(signal.SIGINT, signal.SIG_DFL)
try:
magma = spawn(
"magma",
echo=False,
encoding="utf-8",
maxread=4194304,
ignore_sighup=True,
codec_errors="ignore",
)
magma.expect_exact("> ")
banner = magma.before
magma.sendline("SetColumns(0);")
magma.expect_exact("> ")
magma.sendline("SetAutoColumns(false);")
magma.expect_exact("> ")
magma.sendline("SetLineEditor(false);")
magma.expect_exact("> ")
magma.sendline(f'SetPrompt("{self._prompt}");')
magma.expect_exact(self._prompt)
self.child = magma
finally:
signal.signal(signal.SIGINT, sig)
# figure out the maximum length of a formatted input line
try:
# Linux 4096
# OSX 1024
# Solaris 256
self.max_input_line_size = (
int(fpathconf(self.child.child_fd, "PC_MAX_CANON")) - 1)
except OSError:
# if we can't compute the PTY limit take something minimum that we are aware of
self.max_input_line_size = 255
lang_version = re.search(r"Magma V(\d*.\d*-\d*)", banner).group(1)
self.banner = "Magma kernel connected to Magma " + lang_version
self.language_info["version"] = lang_version
self.language_version = lang_version
def display_fpathconf():
"""Program entry point."""
disp_values = (
('PC_MAX_CANON', ('Max no. of bytes in a '
'terminal canonical input line.')),
('PC_MAX_INPUT', ('Max no. of bytes for which '
'space is available in a terminal input queue.')),
('PC_PIPE_BUF', ('Max no. of bytes which will '
'be written atomically to a pipe.')),
# to explain in more detail: PC_VDISABLE is the reference character in
# the pairing output for bin/display-terminalinfo.py: if the value
# matches (\xff), then that special control character is disabled, fe:
#
# Index Name Special Character Default Value
# VEOF EOF ^D
# VEOL EOL _POSIX_VDISABLE
#
# irregardless, this value is almost always \xff.
('PC_VDISABLE', 'Terminal character disabling value.')
)
fmt = '{name:<13} {value:<10} {description:<11}'
# column header
print(fmt.format(name='name', value='value', description='description'))
print(fmt.replace('<', '-<').format(name='-', value='-', description='-'))
fd = sys.stdin.fileno()
for name, description in disp_values:
key = os.pathconf_names.get(name, None)
if key is None:
value = 'UNDEF'
else:
try:
value = os.fpathconf(fd, name)
if name == 'PC_VDISABLE':
value = r'\x{0:02x}'.format(value)
except OSError as err:
value = 'OSErrno {0.errno}'.format(err)
print(fmt.format(name=name, value=value, description=description))
print()
def main():
fd = sys.stdin.fileno()
locale.setlocale(locale.LC_ALL, '')
encoding = locale.getpreferredencoding()
print('os.isatty({0}) => {1}'.format(fd, os.isatty(fd)))
print('locale.getpreferredencoding() => {0}'.format(encoding))
display_conf(kind='pathconf',
names=os.pathconf_names,
getter=lambda name: os.fpathconf(fd, name))
try:
(iflag, oflag, cflag, lflag, ispeed, ospeed, cc
) = termios.tcgetattr(fd)
except termios.error as err:
print('stdin is not a typewriter: {0}'.format(err))
else:
display_bitmask(kind='Input Mode',
bitmap=BITMAP_IFLAG,
value=iflag)
display_bitmask(kind='Output Mode',
bitmap=BITMAP_OFLAG,
value=oflag)
display_bitmask(kind='Control Mode',
bitmap=BITMAP_CFLAG,
value=cflag)
display_bitmask(kind='Local Mode',
bitmap=BITMAP_LFLAG,
value=lflag)
display_ctl_chars(index=CTLCHAR_INDEX,
cc=cc)
try:
print('os.ttyname({0}) => {1}'.format(fd, os.ttyname(fd)))
print('os.ctermid() => {0}'.format(os.ctermid()))
except OSError as e:
# Travis fails on ttyname with errno 0 'Error'.
print("Error inspecting TTY: {0}".format(e))
def display_fpathconf():
DISP_VALUES = (
("PC_MAX_CANON", ("Max no. of bytes in a "
"terminal canonical input line.")),
(
"PC_MAX_INPUT",
("Max no. of bytes for which "
"space is available in a terminal input queue."),
),
(
"PC_PIPE_BUF",
("Max no. of bytes which will "
"be written atomically to a pipe."),
),
("PC_VDISABLE", "Terminal character disabling value."),
)
FMT = "{name:<13} {value:<5} {description}"
# column header
print(FMT.format(name="name", value="value", description="description"))
print(FMT.format(name=("-" * 13), value=("-" * 5), description=("-" * 11)))
fd = sys.stdin.fileno()
for name, description in DISP_VALUES:
key = os.pathconf_names.get(name, None)
if key is None:
value = "UNDEF"
else:
try:
value = os.fpathconf(fd, name)
except OSError as err:
value = "OSErrno {0.errno}".format(err)
if name == "PC_VDISABLE":
value = hex(value)
print(FMT.format(name=name, value=value, description=description))
print()
def test_os_fpathconf(self):
os = self.posix
assert os.fpathconf(1, "PC_PIPE_BUF") >= 128
raises(OSError, os.fpathconf, -1, "PC_PIPE_BUF")
raises(ValueError, os.fpathconf, 1, "##")
os.chflags(path, flags) # 设置路径的标记为数字标记。 os.chmod(path, mode) # 更改权限 os.chown(path, uid, gid) # 更改文件所有者 os.chroot(path) # 改变当前进程的根目录 os.close(fd) # 关闭文件描述符 fd os.closerange(fd_low, fd_high) # 关闭所有文件描述符，从 fd_low (包含) 到 fd_high (不包含), 错误会忽略 os.curdir # 返回当前目录：（'.'） os.dup(fd) # 复制文件描述符 fd os.dup2(fd, fd2) # 将一个文件描述符 fd 复制到另一个 fd2 os.environ # 获取系统环境变量 os.fchdir(fd) # 通过文件描述符改变当前工作目录 os.fchmod(fd, mode) # 改变一个文件的访问权限，该文件由参数fd指定，参数mode是Unix下的文件访问权限。 os.fchown(fd, uid, gid) # 修改一个文件的所有权，这个函数修改一个文件的用户ID和用户组ID，该文件由文件描述符fd指定。 os.fdatasync(fd) # 强制将文件写入磁盘，该文件由文件描述符fd指定，但是不强制更新文件的状态信息。 os.fdopen(fd[, mode[, bufsize]]) # 通过文件描述符 fd 创建一个文件对象，并返回这个文件对象 os.fpathconf(fd, name) # 返回一个打开的文件的系统配置信息。name为检索的系统配置的值，它也许是一个定义系统值的字符串，这些名字在很多标准中指定（POSIX.1, Unix 95, Unix 98, 和其它）。 os.fstat(fd) # 返回文件描述符fd的状态，像stat()。 os.fstatvfs(fd) # 返回包含文件描述符fd的文件的文件系统的信息，像 statvfs() os.fsync(fd) # 强制将文件描述符为fd的文件写入硬盘。 os.ftruncate(fd, length) # 裁剪文件描述符fd对应的文件, 所以它最大不能超过文件大小。 os.getcwd() # 返回当前工作目录 os.getcwdu() # 返回一个当前工作目录的Unicode对象 os.isatty(fd) # 如果文件描述符fd是打开的，同时与tty(-like)设备相连，则返回true, 否则False。 os.lchflags(path, flags) # 设置路径的标记为数字标记，类似 chflags()，但是没有软链接 os.lchmod(path, mode) # 修改连接文件权限 os.lchown(path, uid, gid) # 更改文件所有者，类似 chown，但是不追踪链接。 os.link(src, dst) # 创建硬链接，名为参数 dst，指向参数 src os.listdir(path) # 返回path指定的文件夹包含的文件或文件夹的名字的列表。 os.lseek(fd, pos, how) # 设置文件描述符 fd当前位置为pos, how方式修改: SEEK_SET 或者 0 设置从文件开始的计算的pos; SEEK_CUR或者 1 则从当前位置计算; os.SEEK_END或者2则从文件尾部开始. 在unix，Windows中有效 os.lstat(path) # 像stat(),但是没有软链接 os.linesep # 当前平台使用的行终止符，win下为"\t\n",Linux下为"\n"
def test_os_fpathconf(self):
os = self.posix
assert os.fpathconf(1, "PC_PIPE_BUF") >= 128
raises(OSError, os.fpathconf, -1, "PC_PIPE_BUF")
raises(ValueError, os.fpathconf, 1, "##")
#!usr/bin/python3
import os,sys
# 打开文件
fd = os.open('pathconf.txt',os.O_RDWR | os.O_CREAT)
print('%s'%os.pathconf_names)
# 获取文件最大连接数
no = os.fpathconf(fd,'PC_LINK_MAX')
print('Maximum number of links to the file. :%d'%no)
# 获取文件名最大长度
len = os.fpathconf(fd,"PC_NAME_MAX")
print('Maximum length of a fileName :%d'%len)
# 关闭文件
os.close(fd)
print('关闭文件成功')
)
from chroma_agent.utils import lsof
from chroma_agent.agent_client import (
CryptoClient,
ExceptionCatchingThread,
HttpError,
MAX_BYTES_PER_POST,
MIN_SESSION_BACKOFF,
MAX_SESSION_BACKOFF,
)
from iml_common.lib.date_time import IMLDateTime
from iml_common.lib.date_time import FixedOffset
READER_SELECT_TIMEOUT = 1.0
RELAY_POLL_INTERVAL = 1
BUFSIZ = os.fpathconf(1, "PC_PIPE_BUF")
COPYTOOL_PROGRESS_INTERVAL = 5 # default 30, increase for snappier UI
class CopytoolException(Exception):
pass
class FifoReaderConflict(CopytoolException):
def __init__(self, pids):
self.pids = pids
def __str__(self):
return "Failed to start FIFO reader due to other readers: %s" % ",".join(
self.pids)
import select
import json
from argparse import ArgumentParser, ArgumentError, Action
from chroma_agent import config
from chroma_agent.crypto import Crypto
from chroma_agent.log import copytool_log, copytool_log_setup, increase_loglevel, decrease_loglevel
from chroma_agent.utils import lsof
from chroma_agent.agent_client import CryptoClient, ExceptionCatchingThread, HttpError, MAX_BYTES_PER_POST, MIN_SESSION_BACKOFF, MAX_SESSION_BACKOFF
from iml_common.lib.date_time import IMLDateTime
from iml_common.lib.date_time import FixedOffset
READER_SELECT_TIMEOUT = 1.0
RELAY_POLL_INTERVAL = 1
BUFSIZ = os.fpathconf(1, 'PC_PIPE_BUF')
COPYTOOL_PROGRESS_INTERVAL = 5 # default 30, increase for snappier UI
class CopytoolException(Exception):
pass
class FifoReaderConflict(CopytoolException):
def __init__(self, pids):
self.pids = pids
def __str__(self):
return "Failed to start FIFO reader due to other readers: %s" % ",".join(
self.pids)
# @copyright by hoojo@2018
# @changelog Added python3 `os file -> fpathconf` example
import os
'''
概述
os.pathconf() 方法用于返回一个打开的文件的系统配置信息。
Unix 平台下可用。
语法
fpathconf()方法语法格式如下：
os.fpathconf(fd, name)
参数
name -- 文件描述符
name -- 检索的系统配置的值，它也许是一个定义系统值的字符串，这些名字在很多标准中指定（POSIX.1, Unix 95, Unix 98, 和其它）。一些平台也定义了一些额外的名字。这些名字在主操作系统上pathconf_names的字典中。对于不在pathconf_names中的配置变量，传递一个数字作为名字，也是可以接受的。
返回值
返回文件的系统信息。
'''
import os
# 打开文件
fd = os.open('/tmp/foo.txt', os.O_RDWR | os.O_CREAT)
print('pathconf_names: %s' % os.pathconf_names)
# 最大连接数
print('最大连接数：%s' % os.fpathconf(fd, 'PC_LINK_MAX'))
os.close(fd)
os.fchdir(fd) # 通过文件描述符改变当前工作目录 os.fchmod(fd,mode) # 改变一个文件的访问权限，该文件由参数fd指定，参数mode是Unix下的文件访问权限 os.fchown(fd,uid,gid) # 修改一个文件的所有权，这个函数修改一个文件的用户ID和用户组ID，该文件由文件描述符fd指定 os.fdatasync(fd) # 强制将文件谢谢如磁盘，该文件由文件描述符fd指定，但是不强制更新文件的状态信息 os.fdopen(fd[,mode[,bufsize]]) # 通过文件描述符fd创建一个文件独享，并返回这个文件对象 os.fpathconf(fd,name) # 返回一个打开的文件的系统配置信息。name为检索的系统配置的值，它也许是一个定义系统值的字符串，这些名字在很多标准中指定（POSIX.1, Unix 95, Unix 98, 和其它）。 os.fstat(fd) # 返回文件描述符fd的状态，像stat() os.fstatvfs(fd) # 返回包含文件描述符fd的文件的文件系统的信息，想stavfs() os.fsync(fd) # 强制将文件描述符为fd的文件写入硬盘 os.ftruncate(fd,length) # 裁剪文件描述符fd对应的文件，所以它最大不能超过文件大小 os.isatty(fd)
import os
'''
概述
os.fpathconf() 方法用于返回一个打开的文件的系统配置信息。
Unix上可用。
语法
fpathconf()方法语法格式如下：
os.fpathconf(fd, name)
参数
fd -- 打开的文件的描述符。
name -- 可选，和buffersize参数和Python内建的open函数一样，mode参数可以指定『r,w,a,r+,w+,a+,b』等，表示文件的是只读的还是可以读写的，以及打开文件是以二进制还是文本形式打开。这些参数和C语言中的<stdio.h>中fopen函数中指定的mode参数类似。
bufsize -- 检索的系统配置的值，它也许是一个定义系统值的字符串，这些名字在很多标准中指定（POSIX.1, Unix 95, Unix 98, 和其它）。一些平台也定义了一些额外的名字。这些名字在主操作系统上pathconf_names的字典中。对于不在pathconf_names中的配置变量，传递一个数字作为名字，也是可以接受的。
返回值
返回一个打开的文件的系统配置信息
'''
# 打开文件
fd = os.open('/tmp/foo.txt', os.O_CREAT | os.O_RDWR)
# 配置名称列表
print('配置名称列表: %s' % os.pathconf_names)
print('文件最大连接数：%d' % os.fpathconf(fd, 'PC_LINK_MAX'))
print('文件名最大长度：%d' % os.fpathconf(fd, 'PC_NAME_MAX'))
os.close(fd)
# 读取内容 os.lseek(fd, 0, 0) str = os.read(fd, 100) print "Read String is : ", str # 获取当前位置 print "Current I/O pointer position :%d" % fo.tell() # 关闭文件 os.close(fd) # 16 os.fpathconf(fd, name) # 返回一个打开的文件的系统配置信息。name为检索的系统配置的值，它也许是一个定义系统值的字符串，这些名字在很多标准中指定（POSIX.1, Unix 95, Unix 98, 和其它）。 # 打开文件 fd = os.open( "foo.txt", os.O_RDWR|os.O_CREAT ) print "%s" % os.pathconf_names # 获取最大文件连接数 no = os.fpathconf(fd, 'PC_LINK_MAX') print "文件最大连接数为 :%d" % no # 获取文件名最大长度 no = os.fpathconf(fd, 'PC_NAME_MAX') print "文件名最大长度为 :%d" % no # 关闭文件 os.close(fd) # 17 os.fstat(fd) # 返回文件描述符fd的状态，像stat()。 # 打开文件 fd = os.open( "foo.txt", os.O_RDWR|os.O_CREAT ) # 获取元组 info = os.fstat(fd) print "文件信息 :", info # 获取文件 uid
def fpathconf(space, fd, w_name):
num = confname_w(space, w_name, os.pathconf_names)
try:
return space.wrap(os.fpathconf(fd, num))
except OSError, e:
raise wrap_oserror(space, e)
