def sysctlbyname(name, return_str=True):
"""Gets a sysctl value by name. If return_str is true, this will return
a string representation, else it will return the raw value.
"""
# forked from https://gist.github.com/pudquick/581a71425439f2cf8f09
size = c_uint(0)
# Find out how big our buffer will be
LIBC.sysctlbyname(name, None, byref(size), None, 0)
# Make the buffer
buf = create_string_buffer(size.value)
# Re-run, but provide the buffer
LIBC.sysctlbyname(name, buf, byref(size), None, 0)
if return_str:
return buf.value
else:
return buf.raw
def sysctlbyname(name, return_str=True):
"""Gets a sysctl value by name. If return_str is true, this will return
a string representation, else it will return the raw value.
"""
# forked from https://gist.github.com/pudquick/581a71425439f2cf8f09
size = c_uint(0)
# Find out how big our buffer will be
LIBC.sysctlbyname(name, None, byref(size), None, 0)
# Make the buffer
buf = create_string_buffer(size.value)
# Re-run, but provide the buffer
LIBC.sysctlbyname(name, buf, byref(size), None, 0)
if return_str:
return buf.value
else:
return buf.raw
def _pthread_sigmask(how, signals):
mask = 0
for sig in signals:
mask |= 1 << sig
oldmask = ctypes.c_ulong()
mask = ctypes.c_ulong(mask)
result = LIBC.pthread_sigmask(how, ctypes.byref(mask),
ctypes.byref(oldmask))
if result:
raise OSError(result, 'Sigmask error.')
return {sig for sig in getattr(signal, 'Signals', range(0, 65))
if (oldmask.value >> sig) & 1}
def _pthread_sigmask(how, signals):
mask = 0
for sig in signals:
mask |= 1 << sig
oldmask = ctypes.c_ulong()
mask = ctypes.c_ulong(mask)
result = LIBC.pthread_sigmask(how, ctypes.byref(mask),
ctypes.byref(oldmask))
if result:
raise OSError(result, "Sigmask error.")
return {
sig
for sig in getattr(signal, "Signals", range(0, 65))
if (oldmask.value >> sig) & 1
}
def give_terminal_to(pgid):
omask = ctypes.c_ulong()
mask = ctypes.c_ulong()
LIBC.sigemptyset(ctypes.byref(mask))
for i in _block_when_giving:
LIBC.sigaddset(ctypes.byref(mask), ctypes.c_int(i))
LIBC.sigemptyset(ctypes.byref(omask))
LIBC.sigprocmask(ctypes.c_int(signal.SIG_BLOCK),
ctypes.byref(mask),
ctypes.byref(omask))
LIBC.tcsetpgrp(ctypes.c_int(FD_STDERR), ctypes.c_int(pgid))
LIBC.sigprocmask(ctypes.c_int(signal.SIG_SETMASK),
ctypes.byref(omask), None)
return True
def give_terminal_to(pgid):
omask = ctypes.c_ulong()
mask = ctypes.c_ulong()
LIBC.sigemptyset(ctypes.byref(mask))
for i in _block_when_giving:
LIBC.sigaddset(ctypes.byref(mask), ctypes.c_int(i))
LIBC.sigemptyset(ctypes.byref(omask))
LIBC.sigprocmask(ctypes.c_int(signal.SIG_BLOCK),
ctypes.byref(mask), ctypes.byref(omask))
LIBC.tcsetpgrp(ctypes.c_int(FD_STDERR), ctypes.c_int(pgid))
LIBC.sigprocmask(ctypes.c_int(signal.SIG_SETMASK),
ctypes.byref(omask), None)
return True
