sys/src/libstdio/tmpnam.c

   1 /*
   2  * pANS stdio -- tmpnam
   3  */
   4 #include "iolib.h"
   5
   6 char *tmpnam(char *s){
   7         static char name[]="/tmp/tn000000000000";
   8         char *p;
   9         do{
  10                 p=name+7;
  11                 while(*p=='9') *p++='0';
  12                 if(*p=='\0') return NULL;
  13                 ++*p;
  14         }while(access(name, 0)==0);
  15         if(s){
  16                 strcpy(s, name);
  17                 return s;
  18         }
  19         return name;
  20 }