4.3BSD - /usr/src/lib/libc/gen/mkstemp.c

   1: /*
   2:  * Copyright (c) 1983 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  */
   6: 
   7: #if defined(LIBC_SCCS) && !defined(lint)
   8: static char sccsid[] = "@(#)mkstemp.c	5.2 (Berkeley) 3/9/86";
   9: #endif LIBC_SCCS and not lint
  10: 
  11: #include <sys/file.h>
  12: 
  13: mkstemp(as)
  14:     char *as;
  15: {
  16:     register char *s;
  17:     register unsigned int pid;
  18:     register int fd, i;
  19: 
  20:     pid = getpid();
  21:     s = as;
  22:     while (*s++)
  23:         /* void */;
  24:     s--;
  25:     while (*--s == 'X') {
  26:         *s = (pid % 10) + '0';
  27:         pid /= 10;
  28:     }
  29:     s++;
  30:     i = 'a';
  31:     while ((fd = open(as, O_CREAT|O_EXCL|O_RDWR, 0600)) == -1) {
  32:         if (i == 'z')
  33:             return(-1);
  34:         *s = i++;
  35:     }
  36:     return(fd);
  37: }

Defined functions

Defined variables