src/temp/mkostemps.c

   1 #define _BSD_SOURCE
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <fcntl.h>
   5 #include <unistd.h>
   6 #include <errno.h>
   7
   8 int __mkostemps(char *template, int len, int flags)
   9 {
  10         size_t l = strlen(template);
  11         if (l<6 || len>l-6 || memcmp(template+l-len-6, "XXXXXX", 6)) {
  12                 errno = EINVAL;
  13                 return -1;
  14         }
  15
  16         flags -= flags & O_ACCMODE;
  17         int fd, retries = 100;
  18         do {
  19                 __randname(template+l-len-6);
  20                 if ((fd = open(template, flags | O_RDWR | O_CREAT | O_EXCL, 0600))>=0)
  21                         return fd;
  22         } while (--retries && errno == EEXIST);
  23
  24         memcpy(template+l-len-6, "XXXXXX", 6);
  25         return -1;
  26 }
  27
  28 weak_alias(__mkostemps, mkostemps);