redhat man page for tmpfile

TMPFILE(3)						     Linux Programmer's Manual							TMPFILE(3)

NAME
       tmpfile - create a temporary file

SYNOPSIS
       #include <stdio.h>

       FILE *tmpfile (void);

DESCRIPTION
       The tmpfile() function generates a unique temporary filename.  The temporary file is then opened in binary read/write (w+b) mode.  The file
       will be automatically deleted when it is closed or the program terminates normally.

RETURN VALUE
       The tmpfile() function returns a stream descriptor, or NULL if a unique filename cannot be generated or the unique file cannot  be  opened.
       In the latter case, errno is set to indicate the error.

ERRORS
       EACCES Search permission denied for directory in file's path prefix.

       EEXIST Unable to generate a unique filename.

       EMFILE Too many file descriptors in use by the process.

       ENFILE Too many files open in the system.

       ENOSPC There was no room in the directory to add the new filename.

       EROFS  Read-only filesystem.

       EINTR  The call was interrupted by a signal.

       CONFORMING TO
	      SVID 3, POSIX, BSD 4.3, ISO 9899, SUSv2

NOTES
       An error message may be written to stdout if the stream cannot be opened.

       The  standard  does not specify the directory that tmpfile() will use. Glibc will try the path prefix P_tmpdir defined in <stdio.h>, and if
       that fails the directory /tmp.

SEE ALSO
       exit(3), mktemp(3), mkstemp(3), tmpnam(3), tempnam(3)

								    2001-11-17								TMPFILE(3)