1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23 /* All Rights Reserved */ 24 25 26 #ident "%Z%%M% %I% %E% SMI" /* from SVR4 bnu:strsave.c 1.5 */ 27 28 #include "uucp.h" 29 30 /* #include <errno.h> */ 31 /* #include <malloc.h> */ 32 /* #include <string.h> */ 33 /* #include <sys/types.h> */ 34 /* #include <sys/stat.h> */ 35 36 /* copy str into data space -- caller should report errors. */ 37 38 GLOBAL char * 39 strsave(str) 40 register char *str; 41 { 42 register char *rval; 43 44 rval = (char *)malloc(strlen(str) + 1); 45 if (rval != 0) 46 strcpy(rval, str); 47 return(rval); 48 } 49 50 /* Determine if the effective user id has the appropriate permission 51 on a file. Modeled after access(2). 52 amode: 53 00 just checks for file existence. 54 04 checks read permission. 55 02 checks write permission. 56 01 checks execute/search permission. 57 other bits are ignored quietly. 58 */ 59 60 GLOBAL int 61 eaccess( path, amode ) 62 char *path; 63 register mode_t amode; 64 { 65 struct stat s; 66 uid_t euid; 67 68 if( stat( path, &s ) == -1 ) 69 return(-1); /* can't stat file */ 70 amode &= 07; 71 72 if( (euid = geteuid()) == 0 ) 73 return(0); /* root can do all */ 74 if( euid == s.st_uid ) 75 s.st_mode >>= 6; /* use owner bits */ 76 else if( getegid() == s.st_gid ) 77 s.st_mode >>= 3; /* use group bits */ 78 79 if( (amode & s.st_mode) == amode ) 80 return(0); /* access permitted */ 81 errno = EACCES; 82 return(-1); 83 } 84