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524b588553
Setup.in: clarified Tk comments somewhat. structmodule.c: use memcpy() instead of double precision assignment.
146 lines
3.3 KiB
C
146 lines
3.3 KiB
C
/***********************************************************
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Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
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The Netherlands.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the names of Stichting Mathematisch
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Centrum or CWI not be used in advertising or publicity pertaining to
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distribution of the software without specific, written prior permission.
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STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
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THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
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FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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******************************************************************/
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/* fcntl module */
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#include "allobjects.h"
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#include "modsupport.h"
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/* fcntl(fd, opt, [arg]) */
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static object *
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fcntl_fcntl(self, args)
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object *self; /* Not used */
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object *args;
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{
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int fd;
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int code;
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int arg;
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int ret;
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char *str;
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int len;
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char buf[1024];
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if (getargs(args, "(iis#)", &fd, &code, &str, &len)) {
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if (len > sizeof buf) {
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err_setstr(ValueError, "fcntl string arg too long");
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return NULL;
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}
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memcpy(buf, str, len);
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if (fcntl(fd, code, buf) < 0) {
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err_errno(IOError);
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return NULL;
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}
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return newsizedstringobject(buf, len);
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}
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err_clear();
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if (getargs(args, "(ii)", &fd, &code))
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arg = 0;
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else {
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err_clear();
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if (!getargs(args, "(iii)", &fd, &code, &arg))
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return NULL;
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}
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ret = fcntl(fd, code, arg);
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if (ret < 0) {
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err_errno(IOError);
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return NULL;
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}
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return newintobject((long)ret);
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}
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/* ioctl(fd, opt, [arg]) */
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static object *
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fcntl_ioctl(self, args)
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object *self; /* Not used */
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object *args;
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{
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int fd;
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int code;
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int arg;
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int ret;
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char *str;
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int len;
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char buf[1024];
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if (getargs(args, "(iis#)", &fd, &code, &str, &len)) {
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if (len > sizeof buf) {
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err_setstr(ValueError, "ioctl string arg too long");
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return NULL;
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}
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memcpy(buf, str, len);
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if (ioctl(fd, code, buf) < 0) {
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err_errno(IOError);
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return NULL;
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}
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return newsizedstringobject(buf, len);
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}
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err_clear();
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if (getargs(args, "(ii)", &fd, &code))
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arg = 0;
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else {
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err_clear();
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if (!getargs(args, "(iii)", &fd, &code, &arg))
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return NULL;
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}
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ret = ioctl(fd, code, arg);
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if (ret < 0) {
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err_errno(IOError);
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return NULL;
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}
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return newintobject((long)ret);
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}
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/* List of functions */
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static struct methodlist fcntl_methods[] = {
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{"fcntl", fcntl_fcntl},
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{"ioctl", fcntl_ioctl},
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{NULL, NULL} /* sentinel */
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};
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/* Module initialisation */
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void
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initfcntl()
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{
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object *m, *d;
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/* Create the module and add the functions */
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m = initmodule("fcntl", fcntl_methods);
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/* Add some symbolic constants to the module */
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d = getmoduledict(m);
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/* Check for errors */
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if (err_occurred())
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fatal("can't initialize module fcntl");
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}
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