cpython-lru_cache-weakref: Modules/fcntlmodule.c annotate

annotate Modules/fcntlmodule.c @ 16798:258dcafe2d0b legacy-trunk

Gustavo Niemeyer <niemeyer@conectiva.com>: Fixed recno support (keys are integers rather than strings). Work around DB bug that cause stdin to be closed by rnopen() when the DB file needed to exist but did not (no longer segfaults). This closes SF tracker patch #403445. Also wrapped some long lines and added whitespace around operators -- FLD.

author	Fred Drake <fdrake@acm.org>
date	Tue, 27 Feb 2001 18:56:46 +0000
parents	09736aeab831
children	3ee9a3f60bc7

rev	line source
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	2 /* fcntl module */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	3
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	4 #include "Python.h"
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	5
4600 d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	6 #ifdef HAVE_UNISTD_H
d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	7 #include <unistd.h>
d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	8 #endif
d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	9
d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	10 #ifdef HAVE_SYS_FILE_H
d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	11 #include <sys/file.h>
d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	12 #endif
d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	13
4623 1fab981465c8 Include <sys/ioctl.h>, to keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4600 diff changeset	14 #include <sys/ioctl.h>
3662 399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	15 #include <fcntl.h>
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	16
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	17
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	18 /* fcntl(fd, opt, [arg]) */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	19
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	20 static PyObject *
13519 070e41f2697b ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	21 fcntl_fcntl(PyObject self, PyObject args)
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	22 {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	23 int fd;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	24 int code;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	25 int arg;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	26 int ret;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	27 char *str;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	28 int len;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	29 char buf[1024];
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	30
13814 45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	31 if (PyArg_ParseTuple(args, "iis#:fcntl", &fd, &code, &str, &len)) {
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	32 if (len > sizeof buf) {
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	33 PyErr_SetString(PyExc_ValueError,
e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	34 "fcntl string arg too long");
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	35 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	36 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	37 memcpy(buf, str, len);
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	38 Py_BEGIN_ALLOW_THREADS
3153 9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	39 ret = fcntl(fd, code, buf);
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	40 Py_END_ALLOW_THREADS
3153 9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	41 if (ret < 0) {
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	42 PyErr_SetFromErrno(PyExc_IOError);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	43 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	44 }
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	45 return PyString_FromStringAndSize(buf, len);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	46 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	47
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	48 PyErr_Clear();
13814 45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	49 arg = 0;
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	50 if (!PyArg_ParseTuple(args, "ii\|i;fcntl requires 2 integers and optionally a third integer or a string",
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	51 &fd, &code, &arg)) {
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	52 return NULL;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	53 }
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	54 Py_BEGIN_ALLOW_THREADS
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	55 ret = fcntl(fd, code, arg);
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	56 Py_END_ALLOW_THREADS
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	57 if (ret < 0) {
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	58 PyErr_SetFromErrno(PyExc_IOError);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	59 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	60 }
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	61 return PyInt_FromLong((long)ret);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	62 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	63
9506 04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	64 static char fcntl_doc [] =
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	65
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	66 "fcntl(fd, opt, [arg])\n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	67 \n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	68 Perform the requested operation on file descriptor fd. The operation\n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	69 is defined by op and is operating system dependent. Typically these\n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	70 codes can be retrieved from the library module FCNTL. The argument arg\n\
13814 45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	71 is optional, and defaults to 0; it may be an int or a string. If arg is\n\
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	72 given as a string, the return value of fcntl is a string of that length,\n\
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	73 containing the resulting value put in the arg buffer by the operating system.\n\
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	74 The length of the arg string is not allowed to exceed 1024 bytes. If the arg\n\
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	75 given is an integer or if none is specified, the result value is an integer\n\
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	76 corresponding to the return value of the fcntl call in the C code.";
9506 04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	77
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	78
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	79 /* ioctl(fd, opt, [arg]) */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	80
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	81 static PyObject *
13519 070e41f2697b ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	82 fcntl_ioctl(PyObject self, PyObject args)
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	83 {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	84 int fd;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	85 int code;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	86 int arg;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	87 int ret;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	88 char *str;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	89 int len;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	90 char buf[1024];
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	91
13814 45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	92 if (PyArg_ParseTuple(args, "iis#:ioctl", &fd, &code, &str, &len)) {
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	93 if (len > sizeof buf) {
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	94 PyErr_SetString(PyExc_ValueError,
e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	95 "ioctl string arg too long");
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	96 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	97 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	98 memcpy(buf, str, len);
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	99 Py_BEGIN_ALLOW_THREADS
3153 9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	100 ret = ioctl(fd, code, buf);
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	101 Py_END_ALLOW_THREADS
3153 9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	102 if (ret < 0) {
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	103 PyErr_SetFromErrno(PyExc_IOError);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	104 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	105 }
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	106 return PyString_FromStringAndSize(buf, len);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	107 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	108
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	109 PyErr_Clear();
13814 45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	110 arg = 0;
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	111 if (!PyArg_ParseTuple(args, "ii\|i;ioctl requires 2 integers and optionally a third integer or a string",
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	112 &fd, &code, &arg)) {
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	113 return NULL;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	114 }
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	115 Py_BEGIN_ALLOW_THREADS
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	116 ret = ioctl(fd, code, arg);
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	117 Py_END_ALLOW_THREADS
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	118 if (ret < 0) {
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	119 PyErr_SetFromErrno(PyExc_IOError);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	120 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	121 }
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	122 return PyInt_FromLong((long)ret);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	123 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	124
9506 04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	125 static char ioctl_doc [] =
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	126 "ioctl(fd, opt, [arg])\n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	127 \n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	128 Perform the requested operation on file descriptor fd. The operation\n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	129 is defined by op and is operating system dependent. Typically these\n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	130 codes can be retrieved from the library module IOCTL. The argument arg\n\
13814 45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	131 is optional, and defaults to 0; it may be an int or a string. If arg is\n\
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	132 given as a string, the return value of ioctl is a string of that length,\n\
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	133 containing the resulting value put in the arg buffer by the operating system.\n\
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	134 The length of the arg string is not allowed to exceed 1024 bytes. If the arg\n\
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	135 given is an integer or if none is specified, the result value is an integer\n\
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	136 corresponding to the return value of the ioctl call in the C code.";
9506 04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	137
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	138
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	139 /* flock(fd, operation) */
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	140
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	141 static PyObject *
13519 070e41f2697b ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	142 fcntl_flock(PyObject self, PyObject args)
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	143 {
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	144 int fd;
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	145 int code;
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	146 int ret;
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	147
13814 45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	148 if (!PyArg_ParseTuple(args, "ii:flock", &fd, &code))
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	149 return NULL;
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	150
9786 40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	151 #ifdef HAVE_FLOCK
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	152 Py_BEGIN_ALLOW_THREADS
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	153 ret = flock(fd, code);
9786 40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	154 Py_END_ALLOW_THREADS
3662 399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	155 #else
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	156
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	157 #ifndef LOCK_SH
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	158 #define LOCK_SH 1 /* shared lock */
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	159 #define LOCK_EX 2 /* exclusive lock */
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	160 #define LOCK_NB 4 /* don't block when locking */
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	161 #define LOCK_UN 8 /* unlock */
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	162 #endif
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	163 {
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	164 struct flock l;
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	165 if (code == LOCK_UN)
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	166 l.l_type = F_UNLCK;
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	167 else if (code & LOCK_SH)
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	168 l.l_type = F_RDLCK;
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	169 else if (code & LOCK_EX)
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	170 l.l_type = F_WRLCK;
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	171 else {
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	172 PyErr_SetString(PyExc_ValueError,
e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	173 "unrecognized flock argument");
3662 399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	174 return NULL;
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	175 }
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	176 l.l_whence = l.l_start = l.l_len = 0;
9786 40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	177 Py_BEGIN_ALLOW_THREADS
3662 399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	178 ret = fcntl(fd, (code & LOCK_NB) ? F_SETLK : F_SETLKW, &l);
9786 40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	179 Py_END_ALLOW_THREADS
3662 399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	180 }
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	181 #endif /* HAVE_FLOCK */
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	182 if (ret < 0) {
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	183 PyErr_SetFromErrno(PyExc_IOError);
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	184 return NULL;
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	185 }
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	186 Py_INCREF(Py_None);
e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	187 return Py_None;
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	188 }
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	189
9506 04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	190 static char flock_doc [] =
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	191 "flock(fd, operation)\n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	192 \n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	193 Perform the lock operation op on file descriptor fd. See the Unix \n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	194 manual flock(3) for details. (On some systems, this function is\n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	195 emulated using fcntl().)";
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	196
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	197
4293 69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	198 /* lockf(fd, operation) */
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	199 static PyObject *
13519 070e41f2697b ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	200 fcntl_lockf(PyObject self, PyObject args)
4293 69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	201 {
9786 40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	202 int fd, code, ret, whence = 0;
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	203 PyObject lenobj = NULL, startobj = NULL;
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	204
11882 dc65c5f6ad7c Massive patch by Skip Montanaro to add ":name" to as many Guido van Rossum <guido@python.org> parents: 9786 diff changeset	205 if (!PyArg_ParseTuple(args, "ii\|OOi:lockf", &fd, &code,
9786 40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	206 &lenobj, &startobj, &whence))
4293 69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	207 return NULL;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	208
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	209 #ifndef LOCK_SH
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	210 #define LOCK_SH 1 /* shared lock */
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	211 #define LOCK_EX 2 /* exclusive lock */
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	212 #define LOCK_NB 4 /* don't block when locking */
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	213 #define LOCK_UN 8 /* unlock */
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	214 #endif
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	215 {
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	216 struct flock l;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	217 if (code == LOCK_UN)
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	218 l.l_type = F_UNLCK;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	219 else if (code & LOCK_SH)
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	220 l.l_type = F_RDLCK;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	221 else if (code & LOCK_EX)
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	222 l.l_type = F_WRLCK;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	223 else {
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	224 PyErr_SetString(PyExc_ValueError,
e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	225 "unrecognized flock argument");
4293 69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	226 return NULL;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	227 }
9786 40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	228 l.l_start = l.l_len = 0;
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	229 if (startobj != NULL) {
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	230 #if !defined(HAVE_LARGEFILE_SUPPORT)
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	231 l.l_start = PyInt_AsLong(startobj);
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	232 #else
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	233 l.l_start = PyLong_Check(startobj) ?
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	234 PyLong_AsLongLong(startobj) :
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	235 PyInt_AsLong(startobj);
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	236 #endif
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	237 if (PyErr_Occurred())
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	238 return NULL;
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	239 }
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	240 if (lenobj != NULL) {
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	241 #if !defined(HAVE_LARGEFILE_SUPPORT)
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	242 l.l_len = PyInt_AsLong(lenobj);
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	243 #else
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	244 l.l_len = PyLong_Check(lenobj) ?
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	245 PyLong_AsLongLong(lenobj) :
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	246 PyInt_AsLong(lenobj);
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	247 #endif
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	248 if (PyErr_Occurred())
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	249 return NULL;
40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	250 }
4293 69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	251 l.l_whence = whence;
9786 40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	252 Py_BEGIN_ALLOW_THREADS
4293 69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	253 ret = fcntl(fd, (code & LOCK_NB) ? F_SETLK : F_SETLKW, &l);
9786 40f723ac26e8 Changes for long file support by Steve Clift. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	254 Py_END_ALLOW_THREADS
4293 69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	255 }
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	256 if (ret < 0) {
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	257 PyErr_SetFromErrno(PyExc_IOError);
4293 69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	258 return NULL;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	259 }
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	260 Py_INCREF(Py_None);
e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	261 return Py_None;
4293 69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	262 }
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	263
9506 04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	264 static char lockf_doc [] =
16245 09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	265 "lockf (fd, operation, length=0, start=0, whence=0)\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	266 \n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	267 This is essentially a wrapper around the fcntl() locking calls. fd is the\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	268 file descriptor of the file to lock or unlock, and operation is one of the\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	269 following values:\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	270 \n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	271 LOCK_UN - unlock\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	272 LOCK_SH - acquire a shared lock\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	273 LOCK_EX - acquire an exclusive lock\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	274 \n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	275 When operation is LOCK_SH or LOCK_EX, it can also be bit-wise OR'd with\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	276 LOCK_NB to avoid blocking on lock acquisition. If LOCK_NB is used and the\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	277 lock cannot be acquired, an IOError will be raised and the exception will\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	278 have an errno attribute set to EACCES or EAGAIN (depending on the operating\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	279 system -- for portability, check for either value).\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	280 \n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	281 length is the number of bytes to lock, with the default meaning to lock to\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	282 EOF. start is the byte offset, relative to whence, to that the lock\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	283 starts. whence is as with fileobj.seek(), specifically:\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	284 \n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	285 0 - relative to the start of the file (SEEK_SET)\n\
09736aeab831 Let's keep things portable to non GCC compilers, please. Sjoerd Mullender <sjoerd@acm.org> parents: 16238 diff changeset	286 1 - relative to the current buffer position (SEEK_CUR)\n\
16238 b4d4f2021114 lockf_doc: a much better description of the lockf() function, based on Barry Warsaw <barry@python.org> parents: 14375 diff changeset	287 2 - relative to the end of the file (SEEK_END)";
9506 04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	288
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	289 /* List of functions */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	290
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	291 static PyMethodDef fcntl_methods[] = {
13814 45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	292 {"fcntl", fcntl_fcntl, METH_VARARGS, fcntl_doc},
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	293 {"ioctl", fcntl_ioctl, METH_VARARGS, ioctl_doc},
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	294 {"flock", fcntl_flock, METH_VARARGS, flock_doc},
45d8f23df218 Rob Hooft (Patch #101046): use PyArg_ParseTuple everywhere. Guido van Rossum <guido@python.org> parents: 13651 diff changeset	295 {"lockf", fcntl_lockf, METH_VARARGS, lockf_doc},
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	296 {NULL, NULL} /* sentinel */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	297 };
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	298
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	299
9506 04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	300 static char module_doc [] =
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	301
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	302 "This module performs file control and I/O control on file \n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	303 descriptors. It is an interface to the fcntl() and ioctl() Unix\n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	304 routines. File descriptors can be obtained with the fileno() method of\n\
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	305 a file or socket object.";
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	306
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	307 /* Module initialisation */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	308
5912 f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	309 static int
13519 070e41f2697b ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	310 ins(PyObject* d, char* symbol, long value)
5912 f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	311 {
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	312 PyObject* v = PyInt_FromLong(value);
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	313 if (!v \|\| PyDict_SetItemString(d, symbol, v) < 0)
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	314 return -1;
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	315
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	316 Py_DECREF(v);
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	317 return 0;
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	318 }
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	319
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	320 static int
13519 070e41f2697b ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	321 all_ins(PyObject* d)
5912 f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	322 {
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	323 if (ins(d, "LOCK_SH", (long)LOCK_SH)) return -1;
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	324 if (ins(d, "LOCK_EX", (long)LOCK_EX)) return -1;
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	325 if (ins(d, "LOCK_NB", (long)LOCK_NB)) return -1;
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	326 if (ins(d, "LOCK_UN", (long)LOCK_UN)) return -1;
6055 72d004971b26 Keep gcc -Wall happy Guido van Rossum <guido@python.org> parents: 5912 diff changeset	327 return 0;
5912 f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	328 }
f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	329
9588 38023a425e48 Add DL_EXPORT() to all modules that could possibly be used Guido van Rossum <guido@python.org> parents: 9506 diff changeset	330 DL_EXPORT(void)
13651 8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)', Thomas Wouters <thomas@python.org> parents: 13519 diff changeset	331 initfcntl(void)
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	332 {
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	333 PyObject m, d;
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	334
9506 04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	335 /* Create the module and add the functions and documentation */
04426224302a Doc strings by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 6055 diff changeset	336 m = Py_InitModule3("fcntl", fcntl_methods, module_doc);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	337
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	338 /* Add some symbolic constants to the module */
4757 e1f1725cae6d Grandly renamed. Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4623 diff changeset	339 d = PyModule_GetDict(m);
5912 f527c12f2e55 Add definitions for symbolic constants LOCK_{EX,NB,SH,UN}. Guido van Rossum <guido@python.org> parents: 4758 diff changeset	340 all_ins(d);
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	341 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/fcntlmodule.c @ 16798:258dcafe2d0b legacy-trunk