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 file system.
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.
This page is part of release 3.14 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/.
