gno/lib/libc/gen/tty.c

125 lines
3.5 KiB
C

/*
* Copyright (c) 1988 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* This file is formatted with tab stops every 8 columns.
*
* $Id: tty.c,v 1.1 1997/02/28 05:12:45 gdr Exp $
*/
#ifdef __ORCAC__
segment "libc_gen__";
#endif
#pragma optimize 0
#pragma debug 0
#pragma memorymodel 0
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)ttyslot.c 5.6 (Berkeley) 2/23/91";
#endif /* LIBC_SCCS and not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <types.h>
#include <ttyent.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <gsos.h>
/*
* gdr: ttyslot is probably buggy -- there is a search for '/' but
* not for ':'
*/
int
ttyslot(void) {
register struct ttyent *ttyp;
register int slot;
register char *p;
int cnt;
char *name;
setttyent();
for (cnt = 0; cnt < 3; ++cnt)
if (name = ttyname(cnt)) {
if (p = rindex(name, '/'))
++p;
else
p = name;
/*printf("p: %s\n",p);*/
for (slot = 1; ttyp = getttyent(); ++slot){
/*printf("ty_name: %s\n",ttyp->ty_name);*/
if (!strcmp(ttyp->ty_name, p)) {
endttyent();
return(slot);
} }
break;
}
endttyent();
return(0);
}
char *
ttyname(int fino) {
static ResultBuf32 resBuf;
static RefInfoRecGS refInfo = {3,1,0,(ResultBuf255Ptr)&resBuf};
if (!isatty(fino)) {
return NULL;
}
resBuf.bufSize = 32;
refInfo.refNum = fino;
GetRefInfoGS(&refInfo);
refInfo.pathname->bufString.text
[refInfo.pathname->bufString.length] = 0;
return refInfo.pathname->bufString.text;
}
int
isatty(int filedes) {
struct stat sb;
if (fstat(filedes,&sb) == -1) {
return 0;
} else if (sb.st_mode & S_IFCHR) {
return 1;
} else {
return 0;
}
}