1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #include <errno.h> 27 #include <stdlib.h> 28 #include <string.h> 29 #include <stdio.h> 30 31 #include "jdk_strerror.h" 32 33 int 34 jdk_strerror(int err, char *buf, size_t len) 35 { 36 int ret = 0; 37 38 if (err == 0 || len < 1) return 0; 39 40 #if defined(__linux__) && (defined(_GNU_SOURCE) || \ 41 (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE < 200112L \ 42 && defined(_XOPEN_SOURCE) && _XOPEN_SOURCE < 600)) 43 44 const char *msg; 45 char tmpbuf[1024]; 46 msg = strerror_r (errno, tmpbuf, (size_t) 1024); 47 48 size_t n = strlen(msg); 49 if (n >= len) { 50 n = len - 1; 51 ret = ERANGE; 52 } 53 54 strncpy(buf, msg, n); 55 buf[n] = '\0'; 56 57 if (strncmp(msg, "Unknown error", 13) == 0) 58 ret = EINVAL; 59 60 #elif _WIN32 61 ret = strerror_s(buf, len, err); 62 #else 63 ret = strerror_r (err, buf, len); 64 #endif 65 66 return ret; 67 }