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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. .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License. .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License. .\" 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] .TH fclose 3C "1 Nov 2003" "SunOS 5.11" "Standard C Library Functions" .SH NAME fclose \- close a stream .SH SYNOPSIS .LP .nf #include \fBint\fR \fBfclose\fR(\fBFILE *\fR\fIstream\fR); .fi .SH DESCRIPTION .sp .LP The \fBfclose()\fR function causes the stream pointed to by \fIstream\fR to be flushed and the associated file to be closed. Any unwritten buffered data for the stream is written to the file; any unread buffered data is discarded. The stream is disassociated from the file. If the associated buffer was automatically allocated, it is deallocated. .sp .LP The \fBfclose()\fR function marks for update the \fBst_ctime\fR and \fBst_mtime\fR fields of the underlying file if the stream is writable and if buffered data has not yet been written to the file. It will perform a \fBclose\fR(2) operation on the file descriptor that is associated with the stream pointed to by \fIstream\fR. .sp .LP After the call to \fBfclose()\fR, any use of \fIstream\fR causes undefined behavior. .sp .LP The \fBfclose()\fR function is performed automatically for all open files upon calling \fBexit\fR(2). .SH RETURN VALUES .sp .LP Upon successful completion, \fBfclose()\fR returns \fB0\fR. Otherwise, it returns \fBEOF\fR and sets \fBerrno\fR to indicate the error. .SH ERRORS .sp .LP The \fBfclose()\fR function will fail if: .sp .ne 2 .mk .na \fB\fBEAGAIN\fR\fR .ad .RS 10n .rt The \fBO_NONBLOCK\fR flag is set for the file descriptor underlying \fIstream\fR and the process would be delayed in the write operation. .RE .sp .ne 2 .mk .na \fB\fBEBADF\fR\fR .ad .RS 10n .rt The file descriptor underlying stream is not valid. .RE .sp .ne 2 .mk .na \fB\fBEFBIG\fR\fR .ad .RS 10n .rt An attempt was made to write a file that exceeds the maximum file size or the process's file size limit; or the file is a regular file and an attempt was made to write at or beyond the offset maximum associated with the corresponding stream. .RE .sp .ne 2 .mk .na \fB\fBEINTR\fR\fR .ad .RS 10n .rt The \fBfclose()\fR function was interrupted by a signal. .RE .sp .ne 2 .mk .na \fB\fBEIO\fR\fR .ad .RS 10n .rt The process is a member of a background process group attempting to write to its controlling terminal, \fBTOSTOP\fR is set, the process is neither ignoring nor blocking \fBSIGTTOU\fR and the process group of the process is orphaned. .RE .sp .ne 2 .mk .na \fB\fBENOSPC\fR\fR .ad .RS 10n .rt There was no free space remaining on the device containing the file. .RE .sp .ne 2 .mk .na \fB\fBEPIPE\fR\fR .ad .RS 10n .rt An attempt is made to write to a pipe or \fBFIFO\fR that is not open for reading by any process. A \fBSIGPIPE\fR signal will also be sent to the calling thread. .RE .sp .LP The \fBfclose()\fR function may fail if: .sp .ne 2 .mk .na \fB\fBENXIO\fR\fR .ad .RS 9n .rt A request was made of a non-existent device, or the request was beyond the limits of the device. .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 StabilityStandard _ MT-LevelMT-Safe .TE .SH SEE ALSO .sp .LP \fBclose\fR(2), \fBexit\fR(2), \fBgetrlimit\fR(2), \fBulimit\fR(2), \fBfopen\fR(3C), \fBstdio\fR(3C), \fBattributes\fR(5), \fBstandards\fR(5)