strsave.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#ident "%Z%%M% %I% %E% SMI" /* from SVR4 bnu:strsave.c 1.5 */
#include "uucp.h"
/* #include <errno.h> */
/* #include <malloc.h> */
/* #include <string.h> */
/* #include <sys/types.h> */
/* #include <sys/stat.h> */
/* copy str into data space -- caller should report errors. */
GLOBAL char *
strsave(str)
register char *str;
{
register char *rval;
rval = (char *)malloc(strlen(str) + 1);
if (rval != 0)
strcpy(rval, str);
return(rval);
}
/* Determine if the effective user id has the appropriate permission
on a file. Modeled after access(2).
amode:
00 just checks for file existence.
04 checks read permission.
02 checks write permission.
01 checks execute/search permission.
other bits are ignored quietly.
*/
GLOBAL int
eaccess( path, amode )
char *path;
register mode_t amode;
{
struct stat s;
uid_t euid;
if( stat( path, &s ) == -1 )
return(-1); /* can't stat file */
amode &= 07;
if( (euid = geteuid()) == 0 )
return(0); /* root can do all */
if( euid == s.st_uid )
s.st_mode >>= 6; /* use owner bits */
else if( getegid() == s.st_gid )
s.st_mode >>= 3; /* use group bits */
if( (amode & s.st_mode) == amode )
return(0); /* access permitted */
errno = EACCES;
return(-1);
}