Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>

char*
mktemp(char *as)
{
        char *s;
        unsigned pid;
        int i;
        char err[ERRMAX];

        pid = getpid();
        s = as;
        while(*s++)
                ;
        s--;
        while(*--s == 'X') {
                *s = pid % 10 + '0';
                pid = pid/10;
        }
        s++;
        i = 'a';
        while(access(as, 0) != -1) {
                if (i == 'z')
                        return "/";
                *s = i++;
        }
        err[0] = '\0';
        errstr(err, sizeof err);        /* clear the error */
        return as;
}