fclose(3c) [sunos man page]

fclose(3C)						   Standard C Library Functions 						fclose(3C)

NAME

       fclose - close a stream

SYNOPSIS

       #include <stdio.h>

       int fclose(FILE *stream);

DESCRIPTION

       The  fclose()  function	causes	the stream pointed to by stream 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  asso-
       ciated buffer was automatically allocated, it is deallocated.

       The  fclose()  function	marks for update the st_ctime and st_mtime 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 close(2) operation on the file descriptor that is associated with the  stream
       pointed to by stream.

       After the call to fclose(), any use of stream causes undefined behavior.

       The fclose() function is performed automatically for all open files upon calling exit(2).

RETURN VALUES

       Upon successful completion, fclose() returns 0. Otherwise, it returns EOF and sets errno to indicate the error.

ERRORS

       The fclose() function will fail if:

       EAGAIN	       The  O_NONBLOCK	flag is set for the file descriptor underlying stream and the process would be delayed in the write opera-
		       tion.

       EBADF	       The file descriptor underlying stream is not valid.

       EFBIG	       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.

       EINTR	       The fclose() function was interrupted by a signal.

       EIO	       The  process  is a member of a background process group attempting to write to its controlling terminal, TOSTOP is set, the
		       process is neither ignoring nor blocking SIGTTOU and the process group of the process is orphaned.

       ENOSPC	       There was no free space remaining on the device containing the file.

       EPIPE	       An attempt is made to write to a pipe or FIFO that is not open for reading by any process. A SIGPIPE signal  will  also	be
		       sent to the calling thread.

       The fclose() function may fail if:

       ENXIO	       A request was made of a non-existent device, or the request was beyond the limits of the device.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       close(2), exit(2), getrlimit(2), ulimit(2), fopen(3C), stdio(3C), attributes(5), standards(5)

SunOS 5.10							    1 Nov 2003								fclose(3C)

FCLOSE(3P)						     POSIX Programmer's Manual							FCLOSE(3P)

PROLOG

       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME

       fclose - close a stream

SYNOPSIS

       #include <stdio.h>

       int fclose(FILE *stream);

DESCRIPTION

       The fclose() function shall cause the stream pointed to by stream to be flushed and  the  associated  file  to  be  closed.  Any  unwritten
       buffered  data for the stream shall be written to the file; any unread buffered data shall be discarded.  Whether or not the call succeeds,
       the stream shall be disassociated from the file and any buffer set by the setbuf() or setvbuf() function shall be  disassociated  from  the
       stream. If the associated buffer was automatically allocated, it shall be deallocated.

       The  fclose()  function	shall  mark for update the st_ctime and st_mtime fields of the underlying file, if the stream was writable, and if
       buffered data remains that has not yet been written to the file. The fclose() function shall perform the equivalent of  a  close()  on  the
       file descriptor that is associated with the stream pointed to by stream.

       After the call to fclose(), any use of stream results in undefined behavior.

RETURN VALUE

       Upon successful completion, fclose() shall return 0; otherwise, it shall return EOF  and set errno to indicate the error.

ERRORS

       The fclose() function shall fail if:

       EAGAIN The O_NONBLOCK flag is set for the file descriptor underlying stream and the process would be delayed in the write operation.

       EBADF  The file descriptor underlying stream is not valid.

       EFBIG  An attempt was made to write a file that exceeds the maximum file size.

       EFBIG  An attempt was made to write a file that exceeds the process' file size limit.

       EFBIG  The  file  is  a	regular  file  and  an attempt was made to write at or beyond the offset maximum associated with the corresponding
	      stream.

       EINTR  The fclose() function was interrupted by a signal.

       EIO    The process is a member of a background process group attempting to write to its controlling terminal, TOSTOP is set, the process is
	      neither  ignoring  nor  blocking	SIGTTOU,  and  the process group of the process is orphaned. This error may also be returned under
	      implementation-defined conditions.

       ENOSPC There was no free space remaining on the device containing the file.

       EPIPE  An attempt is made to write to a pipe or FIFO that is not open for reading by any process. A SIGPIPE signal shall also  be  sent	to
	      the thread.

       The fclose() function may fail if:

       ENXIO  A request was made of a nonexistent device, or the request was outside the capabilities of the device.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       close(), fopen(), getrlimit(), ulimit(), the Base Definitions volume of IEEE Std 1003.1-2001, <stdio.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
       Electrical  and	Electronics  Engineers, Inc and The Open Group. In the event of any discrepancy between this version 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 .

IEEE
/The Open Group						       2003								FCLOSE(3P)