tmpfile(3S)                                                     tmpfile(3S)

NAME
     tmpfile, tmpfile64 - create a temporary file

SYNOPSIS
     #include <stdio.h>

     FILE *tmpfile(void);

     FILE *tmpfile64(void);

DESCRIPTION
     tmpfile() creates a temporary file using a name generated by the
     tmpnam(3S) routine and returns a corresponding FILE pointer. If the
     file cannot be opened, errno is used to issue an error message, and a
     null pointer is returned. The file is automatically deleted when the
     process using it terminates or when the file is closed. The file is
     opened for update ("w+").

     The largest value that can be represented correctly in an object of
     type offt will be established as the offset maximum in the open file
     description.

     There is no functional difference between tmpfile() and tmpfile64(),
     except for the interpretation of off64t [see lfs(5)].

ERRORS
     The following error code descriptions are function-specific. You will
     find a general description in introprm2(2) or in errno(5).

     The tmpfile() function will fail if:

     EINTR     A signal was caught during the tmpfile() function.

     EMFILE    The number of open files exceeds OPENMAX.

     ENFILE    The system file table is full.

     ENOSPC    No new file can be opened in the directory or file system.

RETURN VALUE
     Upon successful completion, tmpfile() 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.

SEE ALSO
     creat(2), open(2), unlink(2), mktemp(3C), perror(3C), fopen(3S),
     stdio(3S), tmpnam(3S), lfs(5), stdio(5).








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