tmpnam(3)                                                     tmpnam(3)

  tmpfile()

  NAME

    tmpfile(), tmpnam() - temporary file routines

  SYNOPSIS

    #include 

    FILE * tmpfile (void)
    char * tmpnam (char *str)

  DESCRIPTION

    The tmpfile(3) function returns a pointer to a stream associated with a
    file descriptor returned by the routine mkstemp(3). The created file is
    unlinked before tmpfile(3) returns, causing the file to be automatically
    deleted when the last reference to it is closed. The file is opened with
    the access value w+.

    The tmpnam(3) function returns a pointer to a file name which did not
    reference an existing file at some indeterminate point in the past. If the
    argument s is non-NULL, the file name is copied to the buffer it
    references. Otherwise, the file name is copied to a static buffer. In
    either case, tmpnam(3) returns a pointer to the file name.

    The buffer referenced by s is expected to be at least {L_tmpnam} bytes in
    length. {L_tmpnam} is defined in the include file .

    The environment variable TMPDIR (if set), the argument tmpdir (if non-
    NULL), and the directory /tmp are tried, in that order, as directories in
    which to store the temporary file.

  RETURN VALUES

    The tmpfile(3) function returns a pointer to an open file stream on
    success, and a NULL pointer on error.

    The tmpnam(3) returns a pointer to a file name on success, and a NULL
    pointer on error.

  ERRORS

    The tmpfile(3) function may fail and set the global variable errno for any
    of the errors specified for the library functions fdopen(3) or mkstemp(3).

    The tmpnam(3) function may fail and set errno for any of the errors
    specified for the library function mktemp(3).

    The tempnam(3) function may fail and set errno for any of the errors
    specified for the library functions malloc(3) or mktemp(3).

  SEE ALSO

    mktemp(3)

    tempnam(3)

  USAGE NOTES

    All of these functions are thread safe.

    None of these functions are async-signal safe.