1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include "namespace.h" 33 #include <sys/types.h> 34 #include <sys/uio.h> 35 #include <unistd.h> 36 #include <errno.h> 37 #include <limits.h> 38 #include <stdio.h> 39 #include <string.h> 40 #include "un-namespace.h" 41 #include "libc_private.h" 42 #include "local.h" 43 44 void 45 perror(const char *s) 46 { 47 char msgbuf[NL_TEXTMAX]; 48 struct iovec *v; 49 struct iovec iov[4]; 50 51 v = iov; 52 if (s != NULL && *s != '\0') { 53 v->iov_base = (char *)s; 54 v->iov_len = strlen(s); 55 v++; 56 v->iov_base = ": "; 57 v->iov_len = 2; 58 v++; 59 } 60 strerror_r(errno, msgbuf, sizeof(msgbuf)); 61 v->iov_base = msgbuf; 62 v->iov_len = strlen(v->iov_base); 63 v++; 64 v->iov_base = "\n"; 65 v->iov_len = 1; 66 FLOCKFILE_CANCELSAFE(stderr); 67 __sflush(stderr); 68 (void)_writev(stderr->_file, iov, (v - iov) + 1); 69 stderr->_flags &= ~__SOFF; 70 FUNLOCKFILE_CANCELSAFE(); 71 } 72