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/* fcntl module */
// Argument Clinic uses the internal C API
#ifndef
Py_BUILD_CORE_BUILTIN
# define
Py_BUILD_CORE_MODULE
1
#endif
#include
"Python.h"
#include
<errno.h>
// EINTR
#include
<fcntl.h>
// fcntl()
#include
<string.h>
// memcpy()
#include
<sys/ioctl.h>
// ioctl()
#ifdef
HAVE_SYS_FILE_H
# include
<sys/file.h>
// flock()
#endif
#ifdef
HAVE_LINUX_FS_H
# include
<linux/fs.h>
#endif
#ifdef
HAVE_STROPTS_H
# include
<stropts.h>
// I_FLUSHBAND
#endif
#define
GUARDSZ
8
// NUL followed by random bytes.
static
const
char
guard
[
GUARDSZ
]
_Py_NONSTRING
=
"\x00\xfa\x69\xc4\x67\xa3\x6c\x58"
;
/*[clinic input]
module fcntl
[clinic start generated code]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=124b58387c158179]*/
#include
"clinic/fcntlmodule.c.h"
/*[clinic input]
fcntl.fcntl
fd: fildes
cmd as code: int
arg: object(c_default='NULL') = 0
/
Perform the operation cmd on file descriptor fd.
The values used for cmd are operating system dependent, and are
available as constants in the fcntl module, using the same names as used
in the relevant C header files. The argument arg is optional, and
defaults to 0; it may be an integer, a bytes-like object or a string.
If arg is given as a string, it will be encoded to binary using the
UTF-8 encoding.
If the arg given is an integer or if none is specified, the result value
is an integer corresponding to the return value of the fcntl() call in
the C code.
If arg is given as a bytes-like object, the return value of fcntl() is a
bytes object of that length, containing the resulting value put in the
arg buffer by the operating system.
[clinic start generated code]*/
static
PyObject
*
fcntl_fcntl_impl
(
PyObject
*
module
,
int
fd
,
int
code
,
PyObject
*
arg
)
/*[clinic end generated code: output=888fc93b51c295bd input=77340720f11665da]*/
{
int
ret
;
int
async_err
=
0
;
if
(
PySys_Audit
(
"fcntl.fcntl"
,
"iiO"
,
fd
,
code
,
arg
?
arg
:
Py_None
)
<
0
) {
return
NULL
;
}
if
(
arg
==
NULL
||
PyIndex_Check
(
arg
)) {
unsigned
int
int_arg
=
0
;
if
(
arg
!=
NULL
) {
if
(!
PyArg_Parse
(
arg
,
"I"
,
&
int_arg
)) {
return
NULL
;
}
}
do
{
Py_BEGIN_ALLOW_THREADS
ret
=
fcntl
(
fd
,
code
, (
int
)
int_arg
);
Py_END_ALLOW_THREADS
}
while
(
ret
==
-1
&&
errno
==
EINTR
&&
!(
async_err
=
PyErr_CheckSignals
()));
if
(
ret
<
0
) {
return
!
async_err
?
PyErr_SetFromErrno
(
PyExc_OSError
) :
NULL
;
}
return
PyLong_FromLong
(
ret
);
}
if
(
PyUnicode_Check
(
arg
)
||
PyObject_CheckBuffer
(
arg
)) {
Py_buffer
view
;
#define
FCNTL_BUFSZ
1024
/* argument plus NUL byte plus guard to detect a buffer overflow */
char
buf
[
FCNTL_BUFSZ
+
GUARDSZ
];
if
(!
PyArg_Parse
(
arg
,
"s*"
,
&
view
)) {
return
NULL
;
}
Py_ssize_t
len
=
view
.
len
;
if
(
len
<=
FCNTL_BUFSZ
) {
memcpy
(
buf
,
view
.
buf
,
len
);
memcpy
(
buf
+
len
,
guard
,
GUARDSZ
);
PyBuffer_Release
(
&
view
);
do
{
Py_BEGIN_ALLOW_THREADS
ret
=
fcntl
(
fd
,
code
,
buf
);
Py_END_ALLOW_THREADS
}
while
(
ret
==
-1
&&
errno
==
EINTR
&&
!(
async_err
=
PyErr_CheckSignals
()));
if
(
ret
<
0
) {
return
!
async_err
?
PyErr_SetFromErrno
(
PyExc_OSError
) :
NULL
;
}
if
(
memcmp
(
buf
+
len
,
guard
,
GUARDSZ
)
!=
0
) {
PyErr_SetString
(
PyExc_SystemError
,
"Possible stack corruption in fcntl() due to "
"buffer overflow. "
"Provide an argument of sufficient size as "
"determined by the operation."
);
return
NULL
;
}
return
PyBytes_FromStringAndSize
(
buf
,
len
);
}
else
{
PyBytesWriter
*
writer
=
PyBytesWriter_Create
(
len
);
if
(
writer
==
NULL
) {
PyBuffer_Release
(
&
view
);
return
NULL
;
}
char
*
ptr
=
PyBytesWriter_GetData
(
writer
);
memcpy
(
ptr
,
view
.
buf
,
len
);
PyBuffer_Release
(
&
view
);
do
{
Py_BEGIN_ALLOW_THREADS
ret
=
fcntl
(
fd
,
code
,
ptr
);
Py_END_ALLOW_THREADS
}
while
(
ret
==
-1
&&
errno
==
EINTR
&&
!(
async_err
=
PyErr_CheckSignals
()));
if
(
ret
<
0
) {
if
(!
async_err
) {
PyErr_SetFromErrno
(
PyExc_OSError
);
}
PyBytesWriter_Discard
(
writer
);
return
NULL
;
}
if
(
ptr
[
len
]
!=
'\0'
) {
PyErr_SetString
(
PyExc_SystemError
,
"Memory corruption in fcntl() due to "
"buffer overflow. "
"Provide an argument of sufficient size as "
"determined by the operation."
);
PyBytesWriter_Discard
(
writer
);
return
NULL
;
}
return
PyBytesWriter_Finish
(
writer
);
}
#undef
FCNTL_BUFSZ
}
PyErr_Format
(
PyExc_TypeError
,
"fcntl() argument 3 must be an integer, "
"a bytes-like object, or a string, not %T"
,
arg
);
return
NULL
;
}
/*[clinic input]
fcntl.ioctl
fd: fildes
request as code: unsigned_long(bitwise=True)
arg: object(c_default='NULL') = 0
mutate_flag as mutate_arg: bool = True
/
Perform the operation request on file descriptor fd.
The values used for request are operating system dependent, and are
available as constants in the fcntl or termios library modules, using
the same names as used in the relevant C header files.
The argument arg is optional, and defaults to 0; it may be an integer, a
bytes-like object or a string. If arg is given as a string, it will be
encoded to binary using the UTF-8 encoding.
If the arg given is an integer or if none is specified, the result value
is an integer corresponding to the return value of the ioctl() call in
the C code.
If the argument is a mutable buffer (such as a bytearray) and the
mutate_flag argument is true (default) then the buffer is (in effect)
passed to the operating system and changes made by the OS will be
reflected in the contents of the buffer after the call has returned.
The return value is the integer returned by the ioctl() system call.
If the argument is a mutable buffer and the mutable_flag argument is
false, the behavior is as if an immutable buffer had been passed.
If the argument is an immutable buffer then a copy of the buffer is
passed to the operating system and the return value is a bytes object of
the same length containing whatever the operating system put in the
buffer.
[clinic start generated code]*/
static
PyObject
*
fcntl_ioctl_impl
(
PyObject
*
module
,
int
fd
,
unsigned long
code
,
PyObject
*
arg
,
int
mutate_arg
)
/*[clinic end generated code: output=f72baba2454d7a62 input=954fe75c208cc492]*/
{
/* We use the unsigned non-checked 'I' format for the 'code' parameter
because the system expects it to be a 32bit bit field value
regardless of it being passed as an int or unsigned long on
various platforms. See the termios.TIOCSWINSZ constant across
platforms for an example of this.
If any of the 64bit platforms ever decide to use more than 32bits
in their unsigned long ioctl codes this will break and need
special casing based on the platform being built on.
*/
int
ret
;
int
async_err
=
0
;
if
(
PySys_Audit
(
"fcntl.ioctl"
,
"ikO"
,
fd
,
code
,
arg
?
arg
:
Py_None
)
<
0
) {
return
NULL
;
}
if
(
arg
==
NULL
||
PyIndex_Check
(
arg
)) {
int
int_arg
=
0
;
if
(
arg
!=
NULL
) {
if
(!
PyArg_Parse
(
arg
,
"i"
,
&
int_arg
)) {
return
NULL
;
}
}
do
{
Py_BEGIN_ALLOW_THREADS
ret
=
ioctl
(
fd
,
code
,
int_arg
);
Py_END_ALLOW_THREADS
}
while
(
ret
==
-1
&&
errno
==
EINTR
&&
!(
async_err
=
PyErr_CheckSignals
()));
if
(
ret
<
0
) {
return
!
async_err
?
PyErr_SetFromErrno
(
PyExc_OSError
) :
NULL
;
}
return
PyLong_FromLong
(
ret
);
}
if
(
PyUnicode_Check
(
arg
)
||
PyObject_CheckBuffer
(
arg
)) {
Py_buffer
view
;
#define
IOCTL_BUFSZ
1024
/* argument plus NUL byte plus guard to detect a buffer overflow */
char
buf
[
IOCTL_BUFSZ
+
GUARDSZ
];
if
(
mutate_arg
&&
!
PyBytes_Check
(
arg
)
&&
!
PyUnicode_Check
(
arg
)) {
if
(
PyObject_GetBuffer
(
arg
,
&
view
,
PyBUF_WRITABLE
)
==
0
) {
Py_ssize_t
len
=
view
.
len
;
void
*
ptr
=
view
.
buf
;
if
(
len
<=
IOCTL_BUFSZ
) {
memcpy
(
buf
,
ptr
,
len
);
memcpy
(
buf
+
len
,
guard
,
GUARDSZ
);
ptr
=
buf
;
}
do
{
Py_BEGIN_ALLOW_THREADS
ret
=
ioctl
(
fd
,
code
,
ptr
);
Py_END_ALLOW_THREADS
}
while
(
ret
==
-1
&&
errno
==
EINTR
&&
!(
async_err
=
PyErr_CheckSignals
()));
if
(
ret
<
0
) {
if
(!
async_err
) {
PyErr_SetFromErrno
(
PyExc_OSError
);
}
PyBuffer_Release
(
&
view
);
return
NULL
;
}
if
(
ptr
==
buf
) {
memcpy
(
view
.
buf
,
buf
,
len
);
}
PyBuffer_Release
(
&
view
);
if
(
ptr
==
buf
&&
memcmp
(
buf
+
len
,
guard
,
GUARDSZ
)
!=
0
) {
PyErr_SetString
(
PyExc_SystemError
,
"Possible stack corruption in ioctl() due to "
"buffer overflow. "
"Provide a writable buffer argument of "
"sufficient size as determined by "
"the operation."
);
return
NULL
;
}
return
PyLong_FromLong
(
ret
);
}
if
(!
PyErr_ExceptionMatches
(
PyExc_BufferError
)) {
return
NULL
;
}
PyErr_Clear
();
}
if
(!
PyArg_Parse
(
arg
,
"s*"
,
&
view
)) {
return
NULL
;
}
Py_ssize_t
len
=
view
.
len
;
if
(
len
<=
IOCTL_BUFSZ
) {
memcpy
(
buf
,
view
.
buf
,
len
);
memcpy
(
buf
+
len
,
guard
,
GUARDSZ
);
PyBuffer_Release
(
&
view
);
do
{
Py_BEGIN_ALLOW_THREADS
ret
=
ioctl
(
fd
,
code
,
buf
);
Py_END_ALLOW_THREADS
}
while
(
ret
==
-1
&&
errno
==
EINTR
&&
!(
async_err
=
PyErr_CheckSignals
()));
if
(
ret
<
0
) {
return
!
async_err
?
PyErr_SetFromErrno
(
PyExc_OSError
) :
NULL
;
}
if
(
memcmp
(
buf
+
len
,
guard
,
GUARDSZ
)
!=
0
) {
PyErr_SetString
(
PyExc_SystemError
,
"Possible stack corruption in ioctl() due to "
"buffer overflow. "
"Provide an argument of sufficient size as "
"determined by the operation."
);
return
NULL
;
}
return
PyBytes_FromStringAndSize
(
buf
,
len
);
}
else
{
PyBytesWriter
*
writer
=
PyBytesWriter_Create
(
len
);
if
(
writer
==
NULL
) {
PyBuffer_Release
(
&
view
);
return
NULL
;
}
char
*
ptr
=
PyBytesWriter_GetData
(
writer
);
memcpy
(
ptr
,
view
.
buf
,
len
);
PyBuffer_Release
(
&
view
);
do
{
Py_BEGIN_ALLOW_THREADS
ret
=
ioctl
(
fd
,
code
,
ptr
);
Py_END_ALLOW_THREADS
}
while
(
ret
==
-1
&&
errno
==
EINTR
&&
!(
async_err
=
PyErr_CheckSignals
()));
if
(
ret
<
0
) {
if
(!
async_err
) {
PyErr_SetFromErrno
(
PyExc_OSError
);
}
PyBytesWriter_Discard
(
writer
);
return
NULL
;
}
if
(
ptr
[
len
]
!=
'\0'
) {
PyErr_SetString
(
PyExc_SystemError
,
"Memory corruption in ioctl() due to "
"buffer overflow. "
"Provide an argument of sufficient size as "
"determined by the operation."
);
PyBytesWriter_Discard
(
writer
);
return
NULL
;
}
return
PyBytesWriter_Finish
(
writer
);
}
#undef
IOCTL_BUFSZ
}
PyErr_Format
(
PyExc_TypeError
,
"ioctl() argument 3 must be an integer, "
"a bytes-like object, or a string, not %T"
,
arg
);
return
NULL
;
}
/*[clinic input]
fcntl.flock
fd: fildes
operation as code: int
/
Perform the lock operation on file descriptor fd.
See the Unix manual page for flock(2) for details (On some systems, this
function is emulated using fcntl()).
[clinic start generated code]*/
static
PyObject
*
fcntl_flock_impl
(
PyObject
*
module
,
int
fd
,
int
code
)
/*[clinic end generated code: output=84059e2b37d2fc64 input=ade68943e8599f0a]*/
{
int
ret
;
int
async_err
=
0
;
if
(
PySys_Audit
(
"fcntl.flock"
,
"ii"
,
fd
,
code
)
<
0
) {
return
NULL
;
}
#ifdef
HAVE_FLOCK
do
{
Py_BEGIN_ALLOW_THREADS
ret
=
flock
(
fd
,
code
);
Py_END_ALLOW_THREADS
}
while
(
ret
==
-1
&&
errno
==
EINTR
&&
!(
async_err
=
PyErr_CheckSignals
()));
#else
#ifndef
LOCK_SH
#define
LOCK_SH
1
/* shared lock */
#define
LOCK_EX
2
/* exclusive lock */
#define
LOCK_NB
4
/* don't block when locking */
#define
LOCK_UN
8
/* unlock */
#endif
{
struct
flock
l
;
if
(
code
==
LOCK_UN
)
l
.
l_type
=
F_UNLCK
;
else
if
(
code
&
LOCK_SH
)
l
.
l_type
=
F_RDLCK
;
else
if
(
code
&
LOCK_EX
)
l
.
l_type
=
F_WRLCK
;
else
{
PyErr_SetString
(
PyExc_ValueError
,
"unrecognized flock argument"
);
return
NULL
;
}
l
.
l_whence
=
l
.
l_start
=
l
.
l_len
=
0
;
do
{
Py_BEGIN_ALLOW_THREADS
ret
=
fcntl
(
fd
, (
code
&
LOCK_NB
) ?
F_SETLK
:
F_SETLKW
,
&
l
);
Py_END_ALLOW_THREADS
}
while
(
ret
==
-1
&&
errno
==
EINTR
&&
!(
async_err
=
PyErr_CheckSignals
()));
}
#endif
/* HAVE_FLOCK */
if
(
ret
<
0
) {
return
!
async_err
?
PyErr_SetFromErrno
(
PyExc_OSError
) :
NULL
;
}
Py_RETURN_NONE
;
}
/*[clinic input]
fcntl.lockf
fd: fildes
cmd as code: int
len as lenobj: object(c_default='NULL') = 0
start as startobj: object(c_default='NULL') = 0
whence: int = 0
/
A wrapper around the fcntl() locking calls.
fd is the file descriptor of the file to lock or unlock, and operation
is one of the following values:
LOCK_UN - unlock
LOCK_SH - acquire a shared lock
LOCK_EX - acquire an exclusive lock
When operation is LOCK_SH or LOCK_EX, it can also be bitwise ORed with
LOCK_NB to avoid blocking on lock acquisition. If LOCK_NB is used and
the lock cannot be acquired, an OSError will be raised and the exception
will have an errno attribute set to EACCES or EAGAIN (depending on the
operating system -- for portability, check for either value).
len is the number of bytes to lock, with the default meaning to lock to
EOF. start is the byte offset, relative to whence, to that the lock
starts. whence is as with fileobj.seek(), specifically:
0 - relative to the start of the file (SEEK_SET)
1 - relative to the current buffer position (SEEK_CUR)
2 - relative to the end of the file (SEEK_END)
[clinic start generated code]*/
static
PyObject
*
fcntl_lockf_impl
(
PyObject
*
module
,
int
fd
,
int
code
,
PyObject
*
lenobj
,
PyObject
*
startobj
,
int
whence
)
/*[clinic end generated code: output=4985e7a172e7461a input=369bef4d7a1c5ff4]*/
{
int
ret
;
int
async_err
=
0
;
if
(
PySys_Audit
(
"fcntl.lockf"
,
"iiOOi"
,
fd
,
code
,
lenobj
?
lenobj
:
Py_None
,
startobj
?
startobj
:
Py_None
,
whence
)
<
0
) {
return
NULL
;
}
#ifndef
LOCK_SH
#define
LOCK_SH
1
/* shared lock */
#define
LOCK_EX
2
/* exclusive lock */
#define
LOCK_NB
4
/* don't block when locking */
#define
LOCK_UN
8
/* unlock */
#endif
/* LOCK_SH */
{
struct
flock
l
;
if
(
code
==
LOCK_UN
)
l
.
l_type
=
F_UNLCK
;
else
if
(
code
&
LOCK_SH
)
l
.
l_type
=
F_RDLCK
;
else
if
(
code
&
LOCK_EX
)
l
.
l_type
=
F_WRLCK
;
else
{
PyErr_SetString
(
PyExc_ValueError
,
"unrecognized lockf argument"
);
return
NULL
;
}
l
.
l_start
=
l
.
l_len
=
0
;
if
(
startobj
!=
NULL
) {
#if
!defined(
HAVE_LARGEFILE_SUPPORT
)
l
.
l_start
=
PyLong_AsLong
(
startobj
);
#else
l
.
l_start
=
PyLong_Check
(
startobj
) ?
PyLong_AsLongLong
(
startobj
) :
PyLong_AsLong
(
startobj
);
#endif
if
(
PyErr_Occurred
())
return
NULL
;
}
if
(
lenobj
!=
NULL
) {
#if
!defined(
HAVE_LARGEFILE_SUPPORT
)
l
.
l_len
=
PyLong_AsLong
(
lenobj
);
#else
l
.
l_len
=
PyLong_Check
(
lenobj
) ?
PyLong_AsLongLong
(
lenobj
) :
PyLong_AsLong
(
lenobj
);
#endif
if
(
PyErr_Occurred
())
return
NULL
;
}
l
.
l_whence
=
whence
;
do
{
Py_BEGIN_ALLOW_THREADS
ret
=
fcntl
(
fd
, (
code
&
LOCK_NB
) ?
F_SETLK
:
F_SETLKW
,
&
l
);
Py_END_ALLOW_THREADS
}
while
(
ret
==
-1
&&
errno
==
EINTR
&&
!(
async_err
=
PyErr_CheckSignals
()));
}
if
(
ret
<
0
) {
return
!
async_err
?
PyErr_SetFromErrno
(
PyExc_OSError
) :
NULL
;
}
Py_RETURN_NONE
;
}
/* List of functions */
static
PyMethodDef
fcntl_methods
[]
=
{
FCNTL_FCNTL_METHODDEF
FCNTL_IOCTL_METHODDEF
FCNTL_FLOCK_METHODDEF
FCNTL_LOCKF_METHODDEF
{
NULL
,
NULL
}
/* sentinel */
};
PyDoc_STRVAR
(
module_doc
,
"This module performs file control and I/O control on file\n\
descriptors. It is an interface to the fcntl() and ioctl() Unix\n\
routines. File descriptors can be obtained with the fileno() method of\n\
a file or socket object."
);
/* Module initialisation */
static
int
all_ins
(
PyObject
*
m
)
{
if
(
PyModule_AddIntMacro
(
m
,
LOCK_SH
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
LOCK_EX
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
LOCK_NB
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
LOCK_UN
))
return
-1
;
/* GNU extensions, as of glibc 2.2.4 */
#ifdef
LOCK_MAND
if
(
PyModule_AddIntMacro
(
m
,
LOCK_MAND
))
return
-1
;
#endif
#ifdef
LOCK_READ
if
(
PyModule_AddIntMacro
(
m
,
LOCK_READ
))
return
-1
;
#endif
#ifdef
LOCK_WRITE
if
(
PyModule_AddIntMacro
(
m
,
LOCK_WRITE
))
return
-1
;
#endif
#ifdef
LOCK_RW
if
(
PyModule_AddIntMacro
(
m
,
LOCK_RW
))
return
-1
;
#endif
#ifdef
F_DUPFD
if
(
PyModule_AddIntMacro
(
m
,
F_DUPFD
))
return
-1
;
#endif
#ifdef
F_DUPFD_CLOEXEC
if
(
PyModule_AddIntMacro
(
m
,
F_DUPFD_CLOEXEC
))
return
-1
;
#endif
#ifdef
F_GETFD
if
(
PyModule_AddIntMacro
(
m
,
F_GETFD
))
return
-1
;
#endif
#ifdef
F_SETFD
if
(
PyModule_AddIntMacro
(
m
,
F_SETFD
))
return
-1
;
#endif
#ifdef
F_GETFL
if
(
PyModule_AddIntMacro
(
m
,
F_GETFL
))
return
-1
;
#endif
#ifdef
F_SETFL
if
(
PyModule_AddIntMacro
(
m
,
F_SETFL
))
return
-1
;
#endif
#ifdef
F_GETLK
if
(
PyModule_AddIntMacro
(
m
,
F_GETLK
))
return
-1
;
#endif
#ifdef
F_SETLK
if
(
PyModule_AddIntMacro
(
m
,
F_SETLK
))
return
-1
;
#endif
#ifdef
F_SETLKW
if
(
PyModule_AddIntMacro
(
m
,
F_SETLKW
))
return
-1
;
#endif
#ifdef
F_OFD_GETLK
if
(
PyModule_AddIntMacro
(
m
,
F_OFD_GETLK
))
return
-1
;
#endif
#ifdef
F_OFD_SETLK
if
(
PyModule_AddIntMacro
(
m
,
F_OFD_SETLK
))
return
-1
;
#endif
#ifdef
F_OFD_SETLKW
if
(
PyModule_AddIntMacro
(
m
,
F_OFD_SETLKW
))
return
-1
;
#endif
#ifdef
F_GETOWN
if
(
PyModule_AddIntMacro
(
m
,
F_GETOWN
))
return
-1
;
#endif
#ifdef
F_SETOWN
if
(
PyModule_AddIntMacro
(
m
,
F_SETOWN
))
return
-1
;
#endif
#ifdef
F_GETPATH
if
(
PyModule_AddIntMacro
(
m
,
F_GETPATH
))
return
-1
;
#endif
#ifdef
F_GETSIG
if
(
PyModule_AddIntMacro
(
m
,
F_GETSIG
))
return
-1
;
#endif
#ifdef
F_SETSIG
if
(
PyModule_AddIntMacro
(
m
,
F_SETSIG
))
return
-1
;
#endif
#ifdef
F_RDLCK
if
(
PyModule_AddIntMacro
(
m
,
F_RDLCK
))
return
-1
;
#endif
#ifdef
F_WRLCK
if
(
PyModule_AddIntMacro
(
m
,
F_WRLCK
))
return
-1
;
#endif
#ifdef
F_UNLCK
if
(
PyModule_AddIntMacro
(
m
,
F_UNLCK
))
return
-1
;
#endif
/* LFS constants */
#ifdef
F_GETLK64
if
(
PyModule_AddIntMacro
(
m
,
F_GETLK64
))
return
-1
;
#endif
#ifdef
F_SETLK64
if
(
PyModule_AddIntMacro
(
m
,
F_SETLK64
))
return
-1
;
#endif
#ifdef
F_SETLKW64
if
(
PyModule_AddIntMacro
(
m
,
F_SETLKW64
))
return
-1
;
#endif
/* GNU extensions, as of glibc 2.2.4. */
#ifdef
FASYNC
if
(
PyModule_AddIntMacro
(
m
,
FASYNC
))
return
-1
;
#endif
#ifdef
F_SETLEASE
if
(
PyModule_AddIntMacro
(
m
,
F_SETLEASE
))
return
-1
;
#endif
#ifdef
F_GETLEASE
if
(
PyModule_AddIntMacro
(
m
,
F_GETLEASE
))
return
-1
;
#endif
#ifdef
F_NOTIFY
if
(
PyModule_AddIntMacro
(
m
,
F_NOTIFY
))
return
-1
;
#endif
#ifdef
F_DUPFD_QUERY
if
(
PyModule_AddIntMacro
(
m
,
F_DUPFD_QUERY
))
return
-1
;
#endif
/* Old BSD flock(). */
#ifdef
F_EXLCK
if
(
PyModule_AddIntMacro
(
m
,
F_EXLCK
))
return
-1
;
#endif
#ifdef
F_SHLCK
if
(
PyModule_AddIntMacro
(
m
,
F_SHLCK
))
return
-1
;
#endif
/* Linux specifics */
#ifdef
F_SETPIPE_SZ
if
(
PyModule_AddIntMacro
(
m
,
F_SETPIPE_SZ
))
return
-1
;
#endif
#ifdef
F_GETPIPE_SZ
if
(
PyModule_AddIntMacro
(
m
,
F_GETPIPE_SZ
))
return
-1
;
#endif
/* On Android, FICLONE is blocked by SELinux. */
#ifndef
__ANDROID__
#ifdef
FICLONE
if
(
PyModule_AddIntMacro
(
m
,
FICLONE
))
return
-1
;
#endif
#ifdef
FICLONERANGE
if
(
PyModule_AddIntMacro
(
m
,
FICLONERANGE
))
return
-1
;
#endif
#endif
#ifdef
F_GETOWN_EX
// since Linux 2.6.32
if
(
PyModule_AddIntMacro
(
m
,
F_GETOWN_EX
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
F_SETOWN_EX
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
F_OWNER_TID
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
F_OWNER_PID
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
F_OWNER_PGRP
))
return
-1
;
#endif
#ifdef
F_GET_RW_HINT
// since Linux 4.13
if
(
PyModule_AddIntMacro
(
m
,
F_GET_RW_HINT
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
F_SET_RW_HINT
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
F_GET_FILE_RW_HINT
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
F_SET_FILE_RW_HINT
))
return
-1
;
#ifndef
RWH_WRITE_LIFE_NOT_SET
// typo in Linux < 5.5
# define
RWH_WRITE_LIFE_NOT_SET
RWF_WRITE_LIFE_NOT_SET
#endif
if
(
PyModule_AddIntMacro
(
m
,
RWH_WRITE_LIFE_NOT_SET
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
RWH_WRITE_LIFE_NONE
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
RWH_WRITE_LIFE_SHORT
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
RWH_WRITE_LIFE_MEDIUM
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
RWH_WRITE_LIFE_LONG
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
RWH_WRITE_LIFE_EXTREME
))
return
-1
;
#endif
/* OS X specifics */
#ifdef
F_FULLFSYNC
if
(
PyModule_AddIntMacro
(
m
,
F_FULLFSYNC
))
return
-1
;
#endif
#ifdef
F_NOCACHE
if
(
PyModule_AddIntMacro
(
m
,
F_NOCACHE
))
return
-1
;
#endif
/* FreeBSD specifics */
#ifdef
F_DUP2FD
if
(
PyModule_AddIntMacro
(
m
,
F_DUP2FD
))
return
-1
;
#endif
#ifdef
F_DUP2FD_CLOEXEC
if
(
PyModule_AddIntMacro
(
m
,
F_DUP2FD_CLOEXEC
))
return
-1
;
#endif
#ifdef
F_READAHEAD
if
(
PyModule_AddIntMacro
(
m
,
F_READAHEAD
))
return
-1
;
#endif
#ifdef
F_RDAHEAD
if
(
PyModule_AddIntMacro
(
m
,
F_RDAHEAD
))
return
-1
;
#endif
#ifdef
F_ISUNIONSTACK
if
(
PyModule_AddIntMacro
(
m
,
F_ISUNIONSTACK
))
return
-1
;
#endif
#ifdef
F_KINFO
if
(
PyModule_AddIntMacro
(
m
,
F_KINFO
))
return
-1
;
#endif
/* NetBSD specifics */
#ifdef
F_CLOSEM
if
(
PyModule_AddIntMacro
(
m
,
F_CLOSEM
))
return
-1
;
#endif
#ifdef
F_MAXFD
if
(
PyModule_AddIntMacro
(
m
,
F_MAXFD
))
return
-1
;
#endif
#ifdef
F_GETNOSIGPIPE
if
(
PyModule_AddIntMacro
(
m
,
F_GETNOSIGPIPE
))
return
-1
;
#endif
#ifdef
F_SETNOSIGPIPE
if
(
PyModule_AddIntMacro
(
m
,
F_SETNOSIGPIPE
))
return
-1
;
#endif
/* For F_{GET|SET}FL */
#ifdef
FD_CLOEXEC
if
(
PyModule_AddIntMacro
(
m
,
FD_CLOEXEC
))
return
-1
;
#endif
/* For F_NOTIFY */
#ifdef
DN_ACCESS
if
(
PyModule_AddIntMacro
(
m
,
DN_ACCESS
))
return
-1
;
#endif
#ifdef
DN_MODIFY
if
(
PyModule_AddIntMacro
(
m
,
DN_MODIFY
))
return
-1
;
#endif
#ifdef
DN_CREATE
if
(
PyModule_AddIntMacro
(
m
,
DN_CREATE
))
return
-1
;
#endif
#ifdef
DN_DELETE
if
(
PyModule_AddIntMacro
(
m
,
DN_DELETE
))
return
-1
;
#endif
#ifdef
DN_RENAME
if
(
PyModule_AddIntMacro
(
m
,
DN_RENAME
))
return
-1
;
#endif
#ifdef
DN_ATTRIB
if
(
PyModule_AddIntMacro
(
m
,
DN_ATTRIB
))
return
-1
;
#endif
#ifdef
DN_MULTISHOT
if
(
PyModule_AddIntMacro
(
m
,
DN_MULTISHOT
))
return
-1
;
#endif
#ifdef
HAVE_STROPTS_H
/* Unix 98 guarantees that these are in stropts.h. */
if
(
PyModule_AddIntMacro
(
m
,
I_PUSH
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_POP
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_LOOK
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_FLUSH
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_FLUSHBAND
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_SETSIG
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_GETSIG
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_FIND
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_PEEK
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_SRDOPT
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_GRDOPT
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_NREAD
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_FDINSERT
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_STR
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_SWROPT
))
return
-1
;
#ifdef
I_GWROPT
/* despite the comment above, old-ish glibcs miss a couple... */
if
(
PyModule_AddIntMacro
(
m
,
I_GWROPT
))
return
-1
;
#endif
if
(
PyModule_AddIntMacro
(
m
,
I_SENDFD
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_RECVFD
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_LIST
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_ATMARK
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_CKBAND
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_GETBAND
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_CANPUT
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_SETCLTIME
))
return
-1
;
#ifdef
I_GETCLTIME
if
(
PyModule_AddIntMacro
(
m
,
I_GETCLTIME
))
return
-1
;
#endif
if
(
PyModule_AddIntMacro
(
m
,
I_LINK
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_UNLINK
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_PLINK
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
I_PUNLINK
))
return
-1
;
#endif
#ifdef
F_ADD_SEALS
/* Linux: file sealing for memfd_create() */
if
(
PyModule_AddIntMacro
(
m
,
F_ADD_SEALS
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
F_GET_SEALS
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
F_SEAL_SEAL
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
F_SEAL_SHRINK
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
F_SEAL_GROW
))
return
-1
;
if
(
PyModule_AddIntMacro
(
m
,
F_SEAL_WRITE
))
return
-1
;
#ifdef
F_SEAL_FUTURE_WRITE
if
(
PyModule_AddIntMacro
(
m
,
F_SEAL_FUTURE_WRITE
))
return
-1
;
#endif
#endif
return
0
;
}
static
int
fcntl_exec
(
PyObject
*
module
)
{
if
(
all_ins
(
module
)
<
0
) {
return
-1
;
}
return
0
;
}
static
PyModuleDef_Slot
fcntl_slots
[]
=
{
_Py_ABI_SLOT
,
{
Py_mod_exec
,
fcntl_exec
},
{
Py_mod_multiple_interpreters
,
Py_MOD_PER_INTERPRETER_GIL_SUPPORTED
},
{
Py_mod_gil
,
Py_MOD_GIL_NOT_USED
},
{
0
,
NULL
}
};
static
struct
PyModuleDef
fcntlmodule
=
{
PyModuleDef_HEAD_INIT
,
.
m_name
=
"fcntl"
,
.
m_doc
=
module_doc
,
.
m_size
=
0
,
.
m_methods
=
fcntl_methods
,
.
m_slots
=
fcntl_slots
,
};
PyMODINIT_FUNC
PyInit_fcntl
(
void
)
{
return
PyModuleDef_Init
(
&
fcntlmodule
);
}
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