mirror of https://github.com/python/cpython
147 lines
3.3 KiB
C
147 lines
3.3 KiB
C
/***********************************************************
|
|
Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
|
|
Amsterdam, The Netherlands.
|
|
|
|
All Rights Reserved
|
|
|
|
Permission to use, copy, modify, and distribute this software and its
|
|
documentation for any purpose and without fee is hereby granted,
|
|
provided that the above copyright notice appear in all copies and that
|
|
both that copyright notice and this permission notice appear in
|
|
supporting documentation, and that the names of Stichting Mathematisch
|
|
Centrum or CWI not be used in advertising or publicity pertaining to
|
|
distribution of the software without specific, written prior permission.
|
|
|
|
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
|
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
|
|
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
|
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
******************************************************************/
|
|
|
|
/* fcntl module */
|
|
|
|
#include "allobjects.h"
|
|
#include "modsupport.h"
|
|
|
|
|
|
/* fcntl(fd, opt, [arg]) */
|
|
|
|
static object *
|
|
fcntl_fcntl(self, args)
|
|
object *self; /* Not used */
|
|
object *args;
|
|
{
|
|
int fd;
|
|
int code;
|
|
int arg;
|
|
int ret;
|
|
char *str;
|
|
int len;
|
|
char buf[1024];
|
|
|
|
if (getargs(args, "(iis#)", &fd, &code, &str, &len)) {
|
|
if (len > sizeof buf) {
|
|
err_setstr(ValueError, "fcntl string arg too long");
|
|
return NULL;
|
|
}
|
|
memcpy(buf, str, len);
|
|
if (fcntl(fd, code, buf) < 0) {
|
|
err_errno(IOError);
|
|
return NULL;
|
|
}
|
|
return newsizedstringobject(buf, len);
|
|
}
|
|
|
|
err_clear();
|
|
if (getargs(args, "(ii)", &fd, &code))
|
|
arg = 0;
|
|
else {
|
|
err_clear();
|
|
if (!getargs(args, "(iii)", &fd, &code, &arg))
|
|
return NULL;
|
|
}
|
|
ret = fcntl(fd, code, arg);
|
|
if (ret < 0) {
|
|
err_errno(IOError);
|
|
return NULL;
|
|
}
|
|
return newintobject((long)ret);
|
|
}
|
|
|
|
|
|
/* ioctl(fd, opt, [arg]) */
|
|
|
|
static object *
|
|
fcntl_ioctl(self, args)
|
|
object *self; /* Not used */
|
|
object *args;
|
|
{
|
|
int fd;
|
|
int code;
|
|
int arg;
|
|
int ret;
|
|
char *str;
|
|
int len;
|
|
char buf[1024];
|
|
|
|
if (getargs(args, "(iis#)", &fd, &code, &str, &len)) {
|
|
if (len > sizeof buf) {
|
|
err_setstr(ValueError, "ioctl string arg too long");
|
|
return NULL;
|
|
}
|
|
memcpy(buf, str, len);
|
|
if (ioctl(fd, code, buf) < 0) {
|
|
err_errno(IOError);
|
|
return NULL;
|
|
}
|
|
return newsizedstringobject(buf, len);
|
|
}
|
|
|
|
err_clear();
|
|
if (getargs(args, "(ii)", &fd, &code))
|
|
arg = 0;
|
|
else {
|
|
err_clear();
|
|
if (!getargs(args, "(iii)", &fd, &code, &arg))
|
|
return NULL;
|
|
}
|
|
ret = ioctl(fd, code, arg);
|
|
if (ret < 0) {
|
|
err_errno(IOError);
|
|
return NULL;
|
|
}
|
|
return newintobject((long)ret);
|
|
}
|
|
|
|
|
|
/* List of functions */
|
|
|
|
static struct methodlist fcntl_methods[] = {
|
|
{"fcntl", fcntl_fcntl},
|
|
{"ioctl", fcntl_ioctl},
|
|
{NULL, NULL} /* sentinel */
|
|
};
|
|
|
|
|
|
/* Module initialisation */
|
|
|
|
void
|
|
initfcntl()
|
|
{
|
|
object *m, *d;
|
|
|
|
/* Create the module and add the functions */
|
|
m = initmodule("fcntl", fcntl_methods);
|
|
|
|
/* Add some symbolic constants to the module */
|
|
d = getmoduledict(m);
|
|
|
|
/* Check for errors */
|
|
if (err_occurred())
|
|
fatal("can't initialize module fcntl");
|
|
}
|