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 /* 28 * attropen -- C library extension routine 29 */ 30 31 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64 32 #pragma weak _attropen64 = attropen64 33 #else 34 #pragma weak _attropen = attropen 35 #endif 36 37 #include "lint.h" 38 #include <sys/types.h> 39 #include <sys/stat.h> 40 #include <fcntl.h> 41 #include <stdlib.h> 42 #include <errno.h> 43 #include <unistd.h> 44 #include <stdarg.h> 45 46 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64 47 48 int 49 attropen64(const char *file, const char *attr, int oflag, ...) 50 { 51 int fd; 52 int attrfd; 53 int saverrno; 54 va_list ap; 55 56 va_start(ap, oflag); 57 58 if ((fd = open64(file, O_RDONLY|O_NONBLOCK)) == -1) { 59 va_end(ap); 60 return (-1); 61 } 62 63 if ((attrfd = openat64(fd, attr, oflag | O_XATTR, 64 va_arg(ap, mode_t))) == -1) { 65 saverrno = errno; 66 (void) close(fd); 67 errno = saverrno; 68 va_end(ap); 69 return (-1); 70 } 71 72 (void) close(fd); 73 va_end(ap); 74 return (attrfd); 75 } 76 77 #else 78 79 int 80 attropen(const char *file, const char *attr, int oflag, ...) 81 { 82 int fd; 83 int attrfd; 84 int saverrno; 85 va_list ap; 86 87 va_start(ap, oflag); 88 89 if ((fd = open(file, O_RDONLY|O_NONBLOCK)) == -1) { 90 va_end(ap); 91 return (-1); 92 } 93 94 if ((attrfd = openat(fd, attr, oflag | O_XATTR, 95 va_arg(ap, mode_t))) == -1) { 96 saverrno = errno; 97 (void) close(fd); 98 errno = saverrno; 99 va_end(ap); 100 return (-1); 101 } 102 103 (void) close(fd); 104 va_end(ap); 105 return (attrfd); 106 } 107 108 #endif /* _FILE_OFFSET_BITS == 64 */ 109