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

annotate Modules/fcntlmodule.c @ 4566:6403c94de50d legacy-trunk

Added safeguard against failure in __del__.

author	Guido van Rossum <guido@python.org>
date	Wed, 27 Nov 1996 19:39:58 +0000
parents	65d2d8e67da3
children	d36250aefb82

rev	line source
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	1 /***********************************************************
2061 172ba04a5191 Added 1995 to copyright message. Guido van Rossum <guido@python.org> parents: 1746 diff changeset	2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
172ba04a5191 Added 1995 to copyright message. Guido van Rossum <guido@python.org> parents: 1746 diff changeset	3 The Netherlands.
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	4
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	5 All Rights Reserved
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	6
4503 65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	7 Permission to use, copy, modify, and distribute this software and its
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	8 documentation for any purpose and without fee is hereby granted,
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	9 provided that the above copyright notice appear in all copies and that
4503 65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	10 both that copyright notice and this permission notice appear in
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	11 supporting documentation, and that the names of Stichting Mathematisch
4503 65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	12 Centrum or CWI or Corporation for National Research Initiatives or
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	13 CNRI not be used in advertising or publicity pertaining to
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	14 distribution of the software without specific, written prior
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	15 permission.
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	16
4503 65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	17 While CWI is the initial source for this software, a modified version
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	18 is made available by the Corporation for National Research Initiatives
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	19 (CNRI) at the Internet address ftp://ftp.python.org.
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	20
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	21 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	22 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	23 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	24 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	25 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	26 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	27 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4293 diff changeset	28 PERFORMANCE OF THIS SOFTWARE.
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	29
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	30 ******************************************************************/
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	31
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	32 /* fcntl module */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	33
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	34 #include "allobjects.h"
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	35 #include "modsupport.h"
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	36
3662 399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	37 #include <fcntl.h>
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	38
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	39
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	40 /* fcntl(fd, opt, [arg]) */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	41
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	42 static object *
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	43 fcntl_fcntl(self, args)
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	44 object self; / Not used */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	45 object *args;
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 int fd;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	48 int code;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	49 int arg;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	50 int ret;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	51 char *str;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	52 int len;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	53 char buf[1024];
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	54
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	55 if (getargs(args, "(iis#)", &fd, &code, &str, &len)) {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	56 if (len > sizeof buf) {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	57 err_setstr(ValueError, "fcntl string arg too long");
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	58 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	59 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	60 memcpy(buf, str, len);
3153 9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	61 BGN_SAVE
9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	62 ret = fcntl(fd, code, buf);
9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	63 END_SAVE
9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	64 if (ret < 0) {
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	65 err_errno(IOError);
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	66 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	67 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	68 return newsizedstringobject(buf, len);
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	69 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	70
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	71 err_clear();
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	72 if (getargs(args, "(ii)", &fd, &code))
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	73 arg = 0;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	74 else {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	75 err_clear();
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	76 if (!getargs(args, "(iii)", &fd, &code, &arg))
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	77 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	78 }
3153 9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	79 BGN_SAVE
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	80 ret = fcntl(fd, code, arg);
3153 9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	81 END_SAVE
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	82 if (ret < 0) {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	83 err_errno(IOError);
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	84 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	85 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	86 return newintobject((long)ret);
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	87 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	88
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	89
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	90 /* ioctl(fd, opt, [arg]) */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	91
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	92 static object *
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	93 fcntl_ioctl(self, args)
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	94 object self; / Not used */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	95 object *args;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	96 {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	97 int fd;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	98 int code;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	99 int arg;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	100 int ret;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	101 char *str;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	102 int len;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	103 char buf[1024];
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	104
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	105 if (getargs(args, "(iis#)", &fd, &code, &str, &len)) {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	106 if (len > sizeof buf) {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	107 err_setstr(ValueError, "ioctl string arg too long");
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	108 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	109 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	110 memcpy(buf, str, len);
3153 9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	111 BGN_SAVE
9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	112 ret = ioctl(fd, code, buf);
9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	113 END_SAVE
9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	114 if (ret < 0) {
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	115 err_errno(IOError);
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	116 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	117 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	118 return newsizedstringobject(buf, len);
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	119 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	120
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	121 err_clear();
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	122 if (getargs(args, "(ii)", &fd, &code))
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	123 arg = 0;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	124 else {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	125 err_clear();
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	126 if (!getargs(args, "(iii)", &fd, &code, &arg))
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	127 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	128 }
3153 9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	129 BGN_SAVE
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	130 ret = ioctl(fd, code, arg);
3153 9a896086d3c3 add BGN/END_SAVE macros around fcntl/ioctl calls Guido van Rossum <guido@python.org> parents: 2061 diff changeset	131 END_SAVE
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	132 if (ret < 0) {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	133 err_errno(IOError);
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	134 return NULL;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	135 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	136 return newintobject((long)ret);
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	137 }
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	138
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	139
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	140 /* flock(fd, operation) */
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	141
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	142 static object *
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	143 fcntl_flock(self, args)
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	144 object self; / Not used */
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	145 object *args;
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	146 {
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	147 int fd;
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	148 int code;
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	149 int ret;
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	150 FILE *f;
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	151
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	152 if (!getargs(args, "(ii)", &fd, &code))
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	153 return NULL;
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	154
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	155 BGN_SAVE
3662 399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	156 #ifdef HAVE_FLOCK
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	157 ret = flock(fd, code);
3662 399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	158 #else
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	159
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	160 #ifndef LOCK_SH
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	161 #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	162 #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	163 #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	164 #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	165 #endif
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	166 {
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	167 struct flock l;
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	168 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	169 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	170 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	171 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	172 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	173 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	174 else {
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	175 err_setstr(ValueError, "unrecognized flock argument");
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	176 return NULL;
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	177 }
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	178 l.l_whence = l.l_start = l.l_len = 0;
399470a958c2 A fcntl implementation for systems (like Solaris) without flock() call. Guido van Rossum <guido@python.org> parents: 3598 diff changeset	179 ret = fcntl(fd, (code & LOCK_NB) ? F_SETLK : F_SETLKW, &l);
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 END_SAVE
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	183 if (ret < 0) {
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	184 err_errno(IOError);
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	185 return NULL;
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	186 }
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	187 INCREF(None);
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	188 return None;
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	189 }
6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	190
4293 69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	191 /* lockf(fd, operation) */
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	192 static object *
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	193 fcntl_lockf(self, args)
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	194 object self; / Not used */
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	195 object *args;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	196 {
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	197 int fd, code, len = 0, start = 0, whence = 0, ret;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	198 FILE *f;
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	199
4293 69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	200 if (!PyArg_ParseTuple(args, "ii\|iii", &fd, &code, &len,
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	201 &start, &whence))
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	202 return NULL;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	203
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	204 BGN_SAVE
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	205 #ifndef LOCK_SH
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	206 #define LOCK_SH 1 /* shared lock */
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	207 #define LOCK_EX 2 /* exclusive lock */
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	208 #define LOCK_NB 4 /* don't block when locking */
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	209 #define LOCK_UN 8 /* unlock */
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	210 #endif
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	211 {
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	212 struct flock l;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	213 if (code == LOCK_UN)
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	214 l.l_type = F_UNLCK;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	215 else if (code & LOCK_SH)
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	216 l.l_type = F_RDLCK;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	217 else if (code & LOCK_EX)
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	218 l.l_type = F_WRLCK;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	219 else {
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	220 err_setstr(ValueError, "unrecognized flock argument");
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	221 return NULL;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	222 }
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	223 l.l_len = len;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	224 l.l_start = start;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	225 l.l_whence = whence;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	226 ret = fcntl(fd, (code & LOCK_NB) ? F_SETLK : F_SETLKW, &l);
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	227 }
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	228 END_SAVE
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	229 if (ret < 0) {
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	230 err_errno(IOError);
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	231 return NULL;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	232 }
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	233 INCREF(None);
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	234 return None;
69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	235 }
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	236
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	237 /* List of functions */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	238
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	239 static struct methodlist fcntl_methods[] = {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	240 {"fcntl", fcntl_fcntl},
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	241 {"ioctl", fcntl_ioctl},
3598 6c9260ae0d16 Added flock(). Guido van Rossum <guido@python.org> parents: 3153 diff changeset	242 {"flock", fcntl_flock},
4293 69bbc21f55cf Added lockf() call Guido van Rossum <guido@python.org> parents: 3662 diff changeset	243 {"lockf", fcntl_lockf, 1},
960 7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	244 {NULL, NULL} /* sentinel */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	245 };
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	246
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	247
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	248 /* Module initialisation */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	249
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	250 void
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	251 initfcntl()
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	252 {
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	253 object m, d;
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	254
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	255 /* Create the module and add the functions */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	256 m = initmodule("fcntl", fcntl_methods);
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	257
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	258 /* Add some symbolic constants to the module */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	259 d = getmoduledict(m);
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	260
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	261 /* Check for errors */
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	262 if (err_occurred())
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	263 fatal("can't initialize module fcntl");
7d3a053c6765 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). Guido van Rossum <guido@python.org> parents: diff changeset	264 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/fcntlmodule.c @ 4566:6403c94de50d legacy-trunk