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" /* SVr4.0 1.1 */
#include "uucp.h"
#include <rpc/trace.h>
/* #include <errno.h> */
/* #include <malloc.h> */
/* #include <string.h> */
/* #include <sys/types.h> */
/* #include <sys/stat.h> */
#if defined(sparc)
#define _STAT _stat
#else /* !sparc */
#define _STAT stat
#endif /* sparc */
extern int _stat(const char *, struct stat *);
/* copy str into data space -- caller should report errors. */
GLOBAL char *
strsave(str)
#if defined(__STDC__)
register const char *str;
#else
register char *str;
#endif
{
register char *rval;
trace1(TR_strsave, 0);
rval = malloc(strlen(str) + 1);
if (rval != 0)
strcpy(rval, str);
trace1(TR_strsave, 1);
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;
trace1(TR_eaccess, 0);
if (_STAT(path, &s) == -1) {
trace1(TR_eaccess, 1);
return (-1); /* can't stat file */
}
amode &= 07;
if ((euid = geteuid()) == 0) { /* root can do all */
trace1(TR_eaccess, 1);
return (0);
}
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) {
trace1(TR_eaccess, 1);
return (0); /* access permitted */
}
errno = EACCES;
trace1(TR_eaccess, 1);
return (-1);
}