diff options
| -rw-r--r-- | Doc/library/os.rst | 23 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Library/2020-05-23-04-18-00.bpo-37129.YoYoYo.rst | 1 | ||||
| -rw-r--r-- | Modules/clinic/posixmodule.c.h | 3 | ||||
| -rw-r--r-- | Modules/posixmodule.c | 6 |
4 files changed, 27 insertions, 6 deletions
diff --git a/Doc/library/os.rst b/Doc/library/os.rst index 6d5fb31..275b2d3 100644 --- a/Doc/library/os.rst +++ b/Doc/library/os.rst @@ -1211,6 +1211,7 @@ or `the MSDN <https://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>`_ on Windo - :data:`RWF_DSYNC` - :data:`RWF_SYNC` + - :data:`RWF_APPEND` Return the total number of bytes actually written. @@ -1228,8 +1229,8 @@ or `the MSDN <https://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>`_ on Windo .. data:: RWF_DSYNC - Provide a per-write equivalent of the :data:`O_DSYNC` ``open(2)`` flag. This - flag effect applies only to the data range written by the system call. + Provide a per-write equivalent of the :data:`O_DSYNC` :func:`os.open` flag. + This flag effect applies only to the data range written by the system call. .. availability:: Linux 4.7 and newer. @@ -1238,14 +1239,28 @@ or `the MSDN <https://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>`_ on Windo .. data:: RWF_SYNC - Provide a per-write equivalent of the :data:`O_SYNC` ``open(2)`` flag. This - flag effect applies only to the data range written by the system call. + Provide a per-write equivalent of the :data:`O_SYNC` :func:`os.open` flag. + This flag effect applies only to the data range written by the system call. .. availability:: Linux 4.7 and newer. .. versionadded:: 3.7 +.. data:: RWF_APPEND + + Provide a per-write equivalent of the :data:`O_APPEND` :func:`os.open` + flag. This flag is meaningful only for :func:`os.pwritev`, and its + effect applies only to the data range written by the system call. The + *offset* argument does not affect the write operation; the data is always + appended to the end of the file. However, if the *offset* argument is + ``-1``, the current file *offset* is updated. + + .. availability:: Linux 4.16 and newer. + + .. versionadded:: 3.10 + + .. function:: read(fd, n) Read at most *n* bytes from file descriptor *fd*. diff --git a/Misc/NEWS.d/next/Library/2020-05-23-04-18-00.bpo-37129.YoYoYo.rst b/Misc/NEWS.d/next/Library/2020-05-23-04-18-00.bpo-37129.YoYoYo.rst new file mode 100644 index 0000000..e025e96 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2020-05-23-04-18-00.bpo-37129.YoYoYo.rst @@ -0,0 +1 @@ +Add a new :data:`os.RWF_APPEND` flag for :func:`os.pwritev`. diff --git a/Modules/clinic/posixmodule.c.h b/Modules/clinic/posixmodule.c.h index 6f180ab..96ea020 100644 --- a/Modules/clinic/posixmodule.c.h +++ b/Modules/clinic/posixmodule.c.h @@ -5517,6 +5517,7 @@ PyDoc_STRVAR(os_pwritev__doc__, "\n" "- RWF_DSYNC\n" "- RWF_SYNC\n" +"- RWF_APPEND\n" "\n" "Using non-zero flags requires Linux 4.7 or newer."); @@ -8876,4 +8877,4 @@ exit: #ifndef OS_WAITSTATUS_TO_EXITCODE_METHODDEF #define OS_WAITSTATUS_TO_EXITCODE_METHODDEF #endif /* !defined(OS_WAITSTATUS_TO_EXITCODE_METHODDEF) */ -/*[clinic end generated code: output=b97bbc8cb5078540 input=a9049054013a1b77]*/ +/*[clinic end generated code: output=9623b9e6f3809842 input=a9049054013a1b77]*/ diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c index 59ac47d..47ae7a8 100644 --- a/Modules/posixmodule.c +++ b/Modules/posixmodule.c @@ -9778,6 +9778,7 @@ The flags argument contains a bitwise OR of zero or more of the following flags: - RWF_DSYNC - RWF_SYNC +- RWF_APPEND Using non-zero flags requires Linux 4.7 or newer. [clinic start generated code]*/ @@ -9785,7 +9786,7 @@ Using non-zero flags requires Linux 4.7 or newer. static Py_ssize_t os_pwritev_impl(PyObject *module, int fd, PyObject *buffers, Py_off_t offset, int flags) -/*[clinic end generated code: output=e3dd3e9d11a6a5c7 input=803dc5ddbf0cfd3b]*/ +/*[clinic end generated code: output=e3dd3e9d11a6a5c7 input=35358c327e1a2a8e]*/ { Py_ssize_t cnt; Py_ssize_t result; @@ -14509,6 +14510,9 @@ all_ins(PyObject *m) #ifdef RWF_NOWAIT if (PyModule_AddIntConstant(m, "RWF_NOWAIT", RWF_NOWAIT)) return -1; #endif +#ifdef RWF_APPEND + if (PyModule_AddIntConstant(m, "RWF_APPEND", RWF_APPEND)) return -1; +#endif /* constants for posix_spawn */ #ifdef HAVE_POSIX_SPAWN |