Provided by: manpages-dev_3.54-1ubuntu1_all 
NAME
tmpfile - create a temporary file
SYNOPSIS
#include <stdio.h> FILE *tmpfile(void);
DESCRIPTION
The tmpfile() function opens a unique temporary file in binary read/write (w+b) mode. The file will be
automatically deleted when it is closed or the program terminates.
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.
EINTR The call was interrupted by a signal.
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.
CONFORMING TO
SVr4, 4.3BSD, C89, C99, SUSv2, POSIX.1-2001.
NOTES
POSIX.1-2001 specifies: 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), mkstemp(3), mktemp(3), tempnam(3), tmpnam(3)
COLOPHON
This page is part of release 3.54 of the Linux man-pages project. A description of the project, and
information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.
2008-07-14 TMPFILE(3)