mirror of https://github.com/mkerrisk/man-pages
58 lines
1.8 KiB
Plaintext
58 lines
1.8 KiB
Plaintext
.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
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.TH "H_ERRNO" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
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.\" h_errno
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.SH NAME
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h_errno \- error return value for network database operations
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.SH SYNOPSIS
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.LP
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\fB#include <netdb.h> \fP
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.SH DESCRIPTION
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.LP
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This method of returning errors is used only in connection with obsolescent
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functions.
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.LP
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The \fI<netdb.h>\fP header provides a declaration of \fIh_errno\fP
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as a
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modifiable lvalue of type \fBint\fP.
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.LP
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It is unspecified whether \fIh_errno\fP is a macro or an identifier
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declared with external linkage. If a macro definition is
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suppressed in order to access an actual object, or a program defines
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an identifier with the name \fIh_errno\fP, the behavior is
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undefined.
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.SH RETURN VALUE
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.LP
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None.
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.SH ERRORS
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.LP
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No errors are defined.
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.LP
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\fIThe following sections are informative.\fP
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.SH EXAMPLES
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.LP
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None.
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.SH APPLICATION USAGE
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.LP
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Applications should obtain the definition of \fIh_errno\fP by the
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inclusion of the \fI<netdb.h>\fP header.
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.SH RATIONALE
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.LP
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None.
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.SH FUTURE DIRECTIONS
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.LP
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\fIh_errno\fP may be withdrawn in a future version.
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.SH SEE ALSO
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.LP
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\fIendhostent\fP() , \fIerrno\fP() , the Base Definitions volume of
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IEEE\ Std\ 1003.1-2001, \fI<netdb.h>\fP
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.SH COPYRIGHT
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Portions of this text are reprinted and reproduced in electronic form
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from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
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-- Portable Operating System Interface (POSIX), The Open Group Base
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Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
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Electrical and Electronics Engineers, Inc and The Open Group. In the
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event of any discrepancy between this version and the original IEEE and
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The Open Group Standard, the original IEEE and The Open Group Standard
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is the referee document. The original Standard can be obtained online at
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http://www.opengroup.org/unix/online.html .
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