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Copyright 1989 AT&T
Portions Copyright (c) 2001, the Institute of Electrical and Electronics Engineers, Inc. and The Open Group. All Rights Reserved.
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The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
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When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
#include <string.h> char *strerror(int errnum);
int strerror_r(int errnum, char *strerrbuf, size_t buflen);
The strerror() function maps the error number in errnum to an error message string, and returns a pointer to that string. It uses the same set of error messages as perror(3C). The returned string should not be overwritten.
The strerror_r() function maps the error number in errnum to anerror message string and returns the string in the buffer pointed to by strerrbuf with length buflen.
Upon successful completion, strerror() returns a pointer to the generated message string. Otherwise, it sets errno and returns a pointer to an error message string. It returns the string "Unknown error" if errnum is not a valid error number.
Upon successful completion, strerror_r() returns 0. Otherwise it sets errno and returns the value of errno to indicate the error. It returns the string "Unknown error" in the buffer pointed to by strerrbuf if errnum is not a valid error number.
These functions may fail if:
EINVAL
The value of errnum is not a valid error number.
The strerror_r() function may fail if:
ERANGE
The buflen argument specifies insufficient storage to contain the generated message string.
Messages returned from these functions are in the native language specified by the LC_MESSAGES locale category. See setlocale(3C).
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Interface Stability | Standard |
| MT-Level | Safe |
gettext(3C), perror(3C), setlocale(3C), attributes(5), standards(5)