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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * attropen -- C library extension routine 31 */ 32 33 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64 34 #pragma weak _attropen64 = attropen64 35 #else 36 #pragma weak _attropen = attropen 37 #endif 38 39 #include "lint.h" 40 #include <sys/types.h> 41 #include <sys/stat.h> 42 #include <fcntl.h> 43 #include <stdlib.h> 44 #include <errno.h> 45 #include <unistd.h> 46 #include <stdarg.h> 47 48 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64 49 50 int 51 attropen64(const char *file, const char *attr, int oflag, ...) 52 { 53 int fd; 54 int attrfd; 55 int saverrno; 56 va_list ap; 57 58 va_start(ap, oflag); 59 60 if ((fd = open64(file, O_RDONLY|O_NONBLOCK)) == -1) { 61 va_end(ap); 62 return (-1); 63 } 64 65 if ((attrfd = openat64(fd, attr, oflag | O_XATTR, 66 va_arg(ap, mode_t))) == -1) { 67 saverrno = errno; 68 (void) close(fd); 69 errno = saverrno; 70 va_end(ap); 71 return (-1); 72 } 73 74 (void) close(fd); 75 va_end(ap); 76 return (attrfd); 77 } 78 79 #else 80 81 int 82 attropen(const char *file, const char *attr, int oflag, ...) 83 { 84 int fd; 85 int attrfd; 86 int saverrno; 87 va_list ap; 88 89 va_start(ap, oflag); 90 91 if ((fd = open(file, O_RDONLY|O_NONBLOCK)) == -1) { 92 va_end(ap); 93 return (-1); 94 } 95 96 if ((attrfd = openat(fd, attr, oflag | O_XATTR, 97 va_arg(ap, mode_t))) == -1) { 98 saverrno = errno; 99 (void) close(fd); 100 errno = saverrno; 101 va_end(ap); 102 return (-1); 103 } 104 105 (void) close(fd); 106 va_end(ap); 107 return (attrfd); 108 } 109 110 #endif /* _FILE_OFFSET_BITS == 64 */ 111