source: trunk/minix/lib/stdio/tmpfile.c@ 12

/*
 * tmpfile.c - create and open a temporary file
 */
/* $Header: /cvsup/minix/src/lib/stdio/tmpfile.c,v 1.1.1.1 2005/04/21 14:56:36 beng Exp $ */

#if     defined(_POSIX_SOURCE)
#include        <sys/types.h>
#endif
#include        <stdio.h>
#include        <string.h>
#include        "loc_incl.h"

pid_t _getpid(void);

FILE *
tmpfile(void) {
        static char name_buffer[L_tmpnam] = "/tmp/tmp." ;
        static char *name = NULL;
        FILE *file;

        if (!name) {
                name = name_buffer + strlen(name_buffer);
                name = _i_compute(_getpid(), 10, name, 5);
                *name = '\0';
        }

        file = fopen(name_buffer,"wb+");
        if (!file) return (FILE *)NULL;
        (void) remove(name_buffer);
        return file;
}