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 tem-
       porary file is then opened in binary read/write (w+b) mode.   The  file
       will  be  automatically deleted when it is closed or the program termi-
       nates 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)