29 lines
590 B
C
29 lines
590 B
C
/*
|
|
* tmpnam.c - create a unique filename
|
|
*/
|
|
/* $Header$ */
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include "loc_incl.h"
|
|
|
|
unsigned int _getpid(void);
|
|
|
|
char *
|
|
tmpnam(char *s) {
|
|
static char name_buffer[L_tmpnam] = "/tmp/tmp.";
|
|
static unsigned long count = 0;
|
|
static char *name = NULL;
|
|
|
|
if (!name) {
|
|
name = name_buffer + strlen(name_buffer);
|
|
name = _i_compute(_getpid(), 10, name, 5);
|
|
*name++ = '.';
|
|
*name = '\0';
|
|
}
|
|
if (++count > TMP_MAX) count = 1; /* wrap-around */
|
|
*_i_compute(count, 10, name, 3) = '\0';
|
|
if (s) return strcpy(s, name_buffer);
|
|
else return name_buffer;
|
|
}
|