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.\" Copyright (c) 2001, The IEEE and The Open Group. All Rights Reserved. Portions Copyright (c) 2004, Sun Microsystems, Inc. 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. This notice shall appear on any product containing this material.
.TH stdio.h 3HEAD "10 Sep 2004" "SunOS 5.11" "Headers"
.SH NAME
stdio.h, stdio \- standard buffered input/output
.SH SYNOPSIS
.LP
.nf
#include <\fBstdio.h\fR>
.fi
.SH DESCRIPTION
.sp
.LP
The <\fBstdio.h\fR> header defines the following macros as positive integer constant expressions:
.sp
.ne 2
.mk
.na
\fB\fBBUFSIZ\fR\fR
.ad
.RS 13n
.rt
size of <\fBstdio.h\fR> buffers
.RE
.sp
.ne 2
.mk
.na
\fB\fB_IOFBF\fR\fR
.ad
.RS 13n
.rt
input/output fully buffered
.RE
.sp
.ne 2
.mk
.na
\fB\fB_IOLBF\fR\fR
.ad
.RS 13n
.rt
input/output line buffered
.RE
.sp
.ne 2
.mk
.na
\fB\fB_IONBF\fR\fR
.ad
.RS 13n
.rt
input/output unbuffered
.RE
.sp
.ne 2
.mk
.na
\fB\fBL_ctermid\fR\fR
.ad
.RS 13n
.rt
maximum size of character array to hold \fBctermid()\fR output
.RE
.sp
.ne 2
.mk
.na
\fB\fBL_tmpnam\fR\fR
.ad
.RS 13n
.rt
maximum size of character array to hold \fBtmpnam()\fR output
.RE
.sp
.ne 2
.mk
.na
\fB\fBSEEK_CUR\fR\fR
.ad
.RS 13n
.rt
seek relative to current position
.RE
.sp
.ne 2
.mk
.na
\fB\fBSEEK_END\fR\fR
.ad
.RS 13n
.rt
seek relative to end-of-file
.RE
.sp
.ne 2
.mk
.na
\fB\fBSEEK_SET\fR\fR
.ad
.RS 13n
.rt
seek relative to start-of-file
.RE
.sp
.LP
The following macros are defined as positive integer constant expressions that denote implementation limits:
.sp
.ne 2
.mk
.na
\fB{\fBFILENAME_MAX\fR}\fR
.ad
.RS 18n
.rt
Maximum size in bytes of the longest filename string that the implementation guarantees can be opened.
.RE
.sp
.ne 2
.mk
.na
\fB{\fBFOPEN_MAX\fR}\fR
.ad
.RS 18n
.rt
Number of streams that the implementation guarantees can be open simultaneously. The value is at least eight.
.RE
.sp
.ne 2
.mk
.na
\fB{\fBTMP_MAX\fR}\fR
.ad
.RS 18n
.rt
Minimum number of unique filenames generated by \fBtmpnam()\fR. Maximum number of times an application can call \fBtmpnam()\fR reliably. The value of {\fBTMP_MAX\fR} is at least 25. On XSI-conformant systems, the value of {\fBTMP_MAX\fR} is at least 10000.
.RE
.sp
.LP
The following macro name is defined as a negative integer constant expression:
.sp
.ne 2
.mk
.na
\fB\fBEOF\fR\fR
.ad
.RS 7n
.rt
end-of-file return value
.RE
.sp
.LP
The following macro name is defined as a null pointer constant:
.sp
.ne 2
.mk
.na
\fB\fBNULL\fR\fR
.ad
.RS 8n
.rt
null pointer
.RE
.sp
.LP
The following macro name is defined as a string constant:
.sp
.ne 2
.mk
.na
\fB\fBP_tmpdir\fR\fR
.ad
.RS 12n
.rt
default directory prefix for \fBtempnam()\fR
.RE
.sp
.LP
The following is defined as expressions of type "pointer to \fBFILE\fR" point to the \fBFILE\fR objects associated, respectively, with the standard error, input, and output streams:
.sp
.ne 2
.mk
.na
\fB\fBstderr\fR\fR
.ad
.RS 10n
.rt
standard error output stream
.RE
.sp
.ne 2
.mk
.na
\fB\fBstdin\fR\fR
.ad
.RS 10n
.rt
standard input stream
.RE
.sp
.ne 2
.mk
.na
\fB\fBstdout\fR\fR
.ad
.RS 10n
.rt
standard output stream
.RE
.sp
.LP
The following data types are defined through \fBtypedef\fR:
.sp
.ne 2
.mk
.na
\fB\fBFILE\fR\fR
.ad
.RS 11n
.rt
structure containing information about a file
.RE
.sp
.ne 2
.mk
.na
\fB\fBfpos_t\fR\fR
.ad
.RS 11n
.rt
non-array type containing all information needed to specify uniquely every position within a file
.RE
.sp
.ne 2
.mk
.na
\fB\fBva_list\fR\fR
.ad
.RS 11n
.rt
as described in <\fBstdarg.h\fR>
.RE
.sp
.ne 2
.mk
.na
\fB\fBsize_t\fR\fR
.ad
.RS 11n
.rt
as described in <\fBstddef.h\fR>
.RE
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp
.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i)
lw(2.75i) |lw(2.75i)
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
Interface StabilityCommitted
_
StandardSee \fBstandards\fR(5).
.TE
.SH SEE ALSO
.sp
.LP
\fBrename\fR(2), \fBctermid\fR(3C), \fBfclose\fR(3C), \fBfdopen\fR(3C), \fBfflush\fR(3C), \fBfgetc\fR(3C), \fBfgetpos\fR(3C), \fBfgets\fR(3C), \fBflockfile\fR(3C), \fBfopen\fR(3C), \fBfputc\fR(3C), \fBfputs\fR(3C), \fBfputwc\fR(3C), \fBfread\fR(3C), \fBfreopen\fR(3C), \fBfseek\fR(3C), \fBfsetpos\fR(3C), \fBftell\fR(3C), \fBfwrite\fR(3C), \fBgetwchar\fR(3C), \fBgetopt\fR(3C), \fBperror\fR(3C), \fBpopen\fR(3C), \fBprintf\fR(3C), \fBremove\fR(3C), \fBrewind\fR(3C), \fBscanf\fR(3C), \fBsetbuf\fR(3C), \fBstdio\fR(3C), \fBsystem\fR(3C), \fBtmpfile\fR(3C), \fBtmpnam\fR(3C), \fBungetc\fR(3C), \fBvprintf\fR(3C), \fBattributes\fR(5), \fBstandards\fR(5)