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Linux 2.6 - man page for fclose (linux section 3posix)

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

       fclose - close a stream

       #include <stdio.h>

       int fclose(FILE *stream);

       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 suc-
       ceeds, 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 under-
       lying 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.

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

       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 capabil-
	      ities of the device.

       The following sections are informative.





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

       Portions of this text are reprinted and	reproduced  in	electronic  form  from	IEEE  Std
       1003.1,	2003  Edition,	Standard  for Information Technology -- 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 orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003					FCLOSE(P)

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