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/*
* _chmod.cc: Part of GNU CSSC.
*
* Copyright (C) 1997, Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*
* CSSC was originally Based on MySC, by Ross Ridge, which was
* placed in the Public Domain.
*
* $Id: _chmod.cc,v 1.2 2001/09/29 19:39:42 james_youngman Exp $
*
*/
#ifndef CSSC___CHMOD_C__
#define CSSC___CHMOD_C__
#define _chmod LIDENT(_chmod)
#ifdef CONFIG_DJGPP
/* Gets or sets a file's attributes under MS-DOS. */
int
_chmod(const char *name, int fl, int attr = 0) {
char ret;
short err;
register short attrib asm("%ecx") = attr;
register char flag asm("%eax") = (fl != 0);
asm volatile ("mov $0x43, %%ah;"
"int $0x21;"
"setb %2;"
: "=a" (err), "=c" (attrib), "=g" (ret) /* output */
: "0" (flag), "1" (attrib), "d" (name) /* input */
: "cc", "%ebx", "%edx", "%esi", "%edi"); /* clobbered */
if (ret) {
errno = err;
return -1;
}
return attrib;
}
#else /* CONFIG_DJGPP */
/* Gets or sets a file's attributes under MS-DOS. */
int
_chmod(const char *name, int fl, int attr = 0) {
union REGS regs;
regs.x.cx = (short) attr;
regs.h.al = (char) fl;
regs.h.ah = 0x43;
#ifdef FP_SEG
struct SREGS regs;
sregs.ds = FP_SEG(name);
regs.x.dx = FP_OFF(name);
intdosx(®s, ®s, &sregs);
#else
regs.x.dx = name;
intdos(®s, ®s);
#endif
if (regs.x.cflag) {
errno = regs.x.ax;
return -1;
}
return regs.x.cx;
}
#endif /* CONFIG_DJGPP */
#endif /* CSSC___CHMOD_C__ */
/* Local variables: */
/* mode: c++ */
/* End: */
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