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" /* SVr4.0 1.1 */ 27 28 #include "uucp.h" 29 #include <rpc/trace.h> 30 31 /* #include <errno.h> */ 32 /* #include <malloc.h> */ 33 /* #include <string.h> */ 34 /* #include <sys/types.h> */ 35 /* #include <sys/stat.h> */ 36 37 #if defined(sparc) 38 #define _STAT _stat 39 #else /* !sparc */ 40 #define _STAT stat 41 #endif /* sparc */ 42 43 extern int _stat(const char *, struct stat *); 44 45 /* copy str into data space -- caller should report errors. */ 46 47 GLOBAL char * 48 strsave(str) 49 #if defined(__STDC__) 50 register const char *str; 51 #else 52 register char *str; 53 #endif 54 { 55 register char *rval; 56 57 trace1(TR_strsave, 0); 58 rval = malloc(strlen(str) + 1); 59 if (rval != 0) 60 strcpy(rval, str); 61 trace1(TR_strsave, 1); 62 return (rval); 63 } 64 65 /* Determine if the effective user id has the appropriate permission 66 on a file. Modeled after access(2). 67 amode: 68 00 just checks for file existence. 69 04 checks read permission. 70 02 checks write permission. 71 01 checks execute/search permission. 72 other bits are ignored quietly. 73 */ 74 75 GLOBAL int 76 eaccess(path, amode) 77 char *path; 78 register mode_t amode; 79 { 80 struct stat s; 81 uid_t euid; 82 83 trace1(TR_eaccess, 0); 84 if (_STAT(path, &s) == -1) { 85 trace1(TR_eaccess, 1); 86 return (-1); /* can't stat file */ 87 } 88 amode &= 07; 89 90 if ((euid = geteuid()) == 0) { /* root can do all */ 91 trace1(TR_eaccess, 1); 92 return (0); 93 } 94 if (euid == s.st_uid) 95 s.st_mode >>= 6; /* use owner bits */ 96 else if (getegid() == s.st_gid) 97 s.st_mode >>= 3; /* use group bits */ 98 99 if ((amode & s.st_mode) == amode) { 100 trace1(TR_eaccess, 1); 101 return (0); /* access permitted */ 102 } 103 errno = EACCES; 104 trace1(TR_eaccess, 1); 105 return (-1); 106 } 107