ack/lang/cem/libcc.ansi/misc/mktemp.c
2018-06-21 22:33:47 +02:00

35 lines
616 B
C

/* $Id$ */
/* mktemp - make a name for a temporary file; only here for backwards compat */
/* no _-protected system-calls? */
unsigned int getpid(void);
int access(char*, int);
char* mktemp(char* template)
{
register int pid, k;
register char* p;
pid = getpid(); /* get process id as semi-unique number */
p = template;
while (*p)
p++; /* find end of string */
/* Replace XXXXXX at end of template with pid. */
while (*--p == 'X')
{
*p = '0' + (pid % 10);
pid /= 10;
}
p++;
for (k = 'a'; k <= 'z'; k++)
{
*p = k;
if (access(template, 0) < 0)
{
return template;
}
}
return ("/");
}