TMPFILE(3S)                          SysV                          TMPFILE(3S)



NAME
     tmpfile - create a temporary file

SYNOPSIS
     #include <stdio.h>

     FILE *tmpfile ( void );

DESCRIPTION
     tmpfile creates a temporary file using a name generated by tmpnam(3S),
     and returns a corresponding FILE pointer.  If the file cannot be opened,
     an error message is printed using perror(3C), and a NULL pointer is
     returned.  The file will automatically be deleted when the process using
     it terminates.  The file is opened for update ("w+").

RETURN VALUES
     Upon successful completion, the tmpfile function returns a pointer to the
     stream of the file that is created.  Otherwise, it returns a null pointer
     and sets errno to indicate the error.

ERRORS
     If the tmpfile function fails, errno is set to one of the following
     values:

     [EMFILE]       OPEN_MAX file descriptors are currently open in the
                    calling process.

     [ENFILE]       Too many files are currently open in the system.

     [ENOSPC]       The directory or file system that would contain the new
                    file cannot be expanded.

SEE ALSO
     creat(2), unlink(2), fopen(3S), mktemp(3C), perror(3C), stdio(3S),
     tmpnam(3S).