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Miss Islington (bot) 2bb0bfafb0 bpo-32777: Fix _Py_set_inheritable async-safety in subprocess (GH-5560) (GH-5562) 
Fix a rare but potential pre-exec child process deadlock in subprocess on POSIX systems when marking file descriptors inheritable on exec in the child process.  This bug appears to have been introduced in 3.4 with the inheritable file descriptors support.

This also changes Python/fileutils.c `set_inheritable` to use the "slow" two `fcntl` syscall path instead of the "fast" single `ioctl` syscall path when asked to be async signal safe (by way of being asked not to raise exceptions).  `ioctl` is not a POSIX async-signal-safe approved function.

ref: http://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html
(cherry picked from commit c1e46e94de)

Co-authored-by: Alexey Izbyshev <izbyshev@users.noreply.github.com>
 		2018-02-05 22:31:22 -08:00
..
internal Revert "bpo-31356: Add context manager to temporarily disable GC GH-5495 (#5496) 2018-02-02 10:04:32 -05:00
Python-ast.h bpo-31464: asdl_c.py no longer emits trailing spaces in Python-ast.h. (#3568) 2017-09-14 20:28:22 -07:00
Python.h bpo-32635: Fix a segfault when importing the crypt module with libxcrypt. (#5284) 2018-01-23 16:11:24 +01:00
abstract.h Fix PyObject_Hash signature in comment (#4905) 2017-12-16 21:08:05 +02:00
accu.h Issue #14387 : undefine 'small' so that it doesn't clash with Windows headers. 2012-03-22 23:10:37 +00:00
asdl.h Add ast.Constant 2016-01-26 00:40:57 +01:00
ast.h String annotations [PEP 563] (#4390) 2018-01-26 08:20:18 -08:00
bitset.h bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
bltinmodule.h these builtins have to be initialized 2009-05-09 18:10:51 +00:00
boolobject.h
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bytearrayobject.h fix comment 2013-10-05 16:28:04 -04:00
bytes_methods.h bpo-32677: Add .isascii() to str, bytes and bytearray (GH-5342) 2018-01-27 14:06:21 +09:00
bytesobject.h bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
cellobject.h bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
ceval.h bpo-32591: Add native coroutine origin tracking (#5250) 2018-01-21 09:44:07 -05:00
classobject.h bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
code.h String annotations [PEP 563] (#4390) 2018-01-26 08:20:18 -08:00
codecs.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
compile.h String annotations [PEP 563] (#4390) 2018-01-26 08:20:18 -08:00
complexobject.h Issue #21803: remove macro indirections in complexobject.h 2014-07-07 18:49:30 -04:00
context.h bpo-32436: Implement PEP 567 (#5027) 2018-01-22 19:11:18 -05:00
datetime.h bpo-10381: Add timezone to datetime C API (#5032) 2018-01-24 17:29:30 -05:00
descrobject.h bpo-32240: Add the const qualifier to declarations of PyObject* array arguments. (#4746) 2017-12-15 13:11:11 +02:00
dictobject.h bpo-15695: Add PyAPI_FUNC() to _PyDict_SizeOf() declaration. (#639) 2017-03-12 14:15:54 +02:00
dtoa.h Issue #14521: Make result of float('nan') and float('-nan') more consistent across platforms. Further, don't rely on Py_HUGE_VAL for float('inf'). 2012-04-29 15:31:56 +01:00
dynamic_annotations.h fix instances of consecutive articles (closes #23221) 2015-01-13 09:17:24 -05:00
enumobject.h
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errcode.h bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
eval.h bpo-32240: Add the const qualifier to declarations of PyObject* array arguments. (#4746) 2017-12-15 13:11:11 +02:00
fileobject.h bpo-29240: PEP 540: Add a new UTF-8 Mode (#855) 2017-12-13 12:29:09 +01:00
fileutils.h bpo-32777: Fix _Py_set_inheritable async-safety in subprocess (GH-5560) (GH-5562) 2018-02-05 22:31:22 -08:00
floatobject.h Issue #11734: Add support for IEEE 754 half-precision floats to the struct module. Original patch by Eli Stevens. 2016-09-03 17:21:29 +01:00
frameobject.h Move exc state to generator. Fixes bpo-25612 (#1773) 2017-10-22 23:41:51 +02:00
funcobject.h bpo-32240: Add the const qualifier to declarations of PyObject* array arguments. (#4746) 2017-12-15 13:11:11 +02:00
genobject.h bpo-32591: Add native coroutine origin tracking (#5250) 2018-01-21 09:44:07 -05:00
graminit.h bpo-30406: Make async and await proper keywords (#1669) 2017-10-05 23:24:46 -04:00
grammar.h bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
import.h rename _imp initialization function to follow conventions (#5432) 2018-01-29 11:33:57 -08:00
intrcheck.h bpo-16500: Allow registering at-fork handlers (#1715) 2017-05-27 17:50:54 +02:00
iterobject.h Rename _PyIter_GetBuiltin to _PyObject_GetBuiltin, and do not include it in the stable ABI. 2012-04-05 00:04:20 +02:00
listobject.h bpo-29867: Add asserts in PyTuple_GET_SIZE, PyList_GET_SIZE and PySet_GET_SIZE. (#751) 2017-04-22 01:48:11 +02:00
longintrepr.h bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
longobject.h bpo-29878: Add global instances of int for 0 and 1. (#852) 2017-03-30 09:09:41 +03:00
marshal.h Issue #1772673: The type of `char*` arguments now changed to `const char*`. 2013-10-19 21:03:34 +03:00
memoryobject.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
metagrammar.h
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methodobject.h bpo-32240: Add the const qualifier to declarations of PyObject* array arguments. (#4746) 2017-12-15 13:11:11 +02:00
modsupport.h bpo-32240: Add the const qualifier to declarations of PyObject* array arguments. (#4746) 2017-12-15 13:11:11 +02:00
moduleobject.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 15:04:59 +02:00
namespaceobject.h Issue #26900: Excluded underscored names and other private API from limited API. 2016-09-11 11:03:14 +03:00
node.h bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
object.h bpo-32571: Avoid raising unneeded AttributeError and silencing it in C code (GH-5222) 2018-01-25 17:49:40 +09:00
objimpl.h bpo-32030: Add pymain_get_global_config() (#4735) 2017-12-06 17:26:10 +01:00
odictobject.h bpo-29084: Exclude C API for OrderedDict from the limited C API. (#4900) 2017-12-25 02:08:42 +02:00
opcode.h bpo-32550. Remove the STORE_ANNOTATION bytecode. (GH-5181) 2018-01-29 16:41:04 -08:00
osdefs.h Issue #22591: Drop support of MS-DOS 2014-10-10 11:55:41 +02:00
osmodule.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
parsetok.h bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
patchlevel.h finished 3.7.0b1 - on to b1+ 2018-01-31 17:00:52 -05:00
pgen.h
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pgenheaders.h bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
py_curses.h bpo-32593: Drop FreeBSD 9 and older support (#5232) 2018-01-22 18:32:50 +01:00
pyarena.h Merge branches/pep-0384. 2010-12-03 20:14:31 +00:00
pyatomic.h bpo-31462: Remove trailing whitespaces. (#3564) 2017-09-14 09:38:36 +03:00
pycapsule.h Merged revisions 88517 via svnmerge from 2011-02-22 23:43:57 +00:00
pyctype.h Try to fix linking failures under Windows 2011-10-04 14:43:47 +02:00
pydebug.h bpo-32125: Remove Py_UseClassExceptionsFlag flag (#4544) 2017-11-24 22:06:38 +01:00
pydtrace.d bpo-31574: importlib dtrace (#3749) 2017-09-29 15:53:19 -07:00
pydtrace.h bpo-31574: importlib dtrace (#3749) 2017-09-29 15:53:19 -07:00
pyerrors.h bpo-30697: Fix PyErr_NormalizeException() when no memory (GH-2327) 2017-10-26 15:09:06 +02:00
pyexpat.h Issue #13612: handle unknown encodings without a buffer overflow. 2013-05-25 05:25:48 -07:00
pyfpe.h bpo-29137: Remove fpectl module (#4789) 2018-01-05 23:15:34 -08:00
pyhash.h Correct the location of a function mentioned in a comment (GH-4327) 2017-11-09 19:55:34 +03:00
pylifecycle.h bpo-32030: Add _Py_FindEnvConfigValue() (#4963) 2017-12-21 16:49:13 +01:00
pymacconfig.h Minor spelling fixes 2016-08-20 08:03:06 +00:00
pymacro.h bpo-31338 (#3374) 2017-09-14 18:13:16 -07:00
pymath.h bpo-31373: fix undefined floating-point demotions (#3396) 2017-09-07 11:13:59 -07:00
pymem.h bpo-32030: Add pymain_get_global_config() (#4735) 2017-12-06 17:26:10 +01:00
pyport.h bpo-32593: Drop FreeBSD 9 and older support (#5232) 2018-01-22 18:32:50 +01:00
pystate.h bpo-32030: Add _PyCoreConfig.module_search_paths (#4954) 2018-01-24 17:03:28 +01:00
pystrcmp.h
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pystrhex.h Issue #26900: Excluded underscored names and other private API from limited API. 2016-09-11 11:03:14 +03:00
pystrtod.h Issue #26331: Implement the parsing part of PEP 515. 2016-09-09 14:57:09 -07:00
pythonrun.h bpo-22257: Small changes for PEP 432. (#1728) 2017-05-22 21:36:03 -07:00
pythread.h bpo-30768: Recompute timeout on interrupted lock (GH-4103) 2017-10-24 16:53:32 -07:00
pytime.h bpo-31784: Implement PEP 564: add time.time_ns() (#3989) 2017-11-02 07:28:27 -07:00
rangeobject.h
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setobject.h bpo-29867: Add asserts in PyTuple_GET_SIZE, PyList_GET_SIZE and PySet_GET_SIZE. (#751) 2017-04-22 01:48:11 +02:00
sliceobject.h bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
structmember.h Issue #28761: The fields name and doc of structures PyMemberDef, PyGetSetDef, 2016-11-22 07:58:08 +02:00
structseq.h Issue #28761: The fields name and doc of structures PyMemberDef, PyGetSetDef, 2016-11-22 07:58:08 +02:00
symtable.h Issue #28003: Implement PEP 525 -- Asynchronous Generators. 2016-09-08 22:01:51 -07:00
sysmodule.h bpo-32030: Add _PyPathConfig_ComputeArgv0() (#4845) 2017-12-13 21:05:57 +01:00
token.h bpo-30406: Make async and await proper keywords (#1669) 2017-10-05 23:24:46 -04:00
traceback.h Issue #26900: Excluded underscored names and other private API from limited API. 2016-09-11 11:03:14 +03:00
tupleobject.h Fix small typo in tupleobject.h (#4801) 2017-12-12 09:59:30 +02:00
typeslots.h Issue 24365: Conditionalize PEP 489 additions to the stable ABI 2015-06-02 19:06:47 -04:00
ucnhash.h Removed unintentional trailing spaces in non-external and non-generated C files. 2015-03-18 21:53:15 +02:00
unicodeobject.h bpo-29240: Fix locale encodings in UTF-8 Mode (#5170) 2018-01-15 10:45:49 +01:00
warnings.h bpo-32591: Add native coroutine origin tracking (#5250) 2018-01-21 09:44:07 -05:00
weakrefobject.h Closes #13867: remove untrue comment about PyWeakref_Check(). 2013-10-08 19:50:26 +02:00