gen/FreeBSD/gethostname.c.patch

   1 --- gethostname.c.orig  2004-11-25 11:38:01.000000000 -0800
   2 +++ gethostname.c       2005-09-15 09:46:13.000000000 -0700
   3 @@ -39,6 +39,7 @@ __FBSDID("$FreeBSD: src/lib/libc/gen/get
   4
   5  #include <sys/param.h>
   6  #include <sys/sysctl.h>
   7 +#include <limits.h>
   8
   9  #include <errno.h>
  10
  11 @@ -54,10 +55,22 @@ gethostname(name, namelen)
  12
  13         mib[0] = CTL_KERN;
  14         mib[1] = KERN_HOSTNAME;
  15 +       if (namelen < MAXHOSTNAMELEN + 1) {
  16 +               char local_buf[MAXHOSTNAMELEN + 1];
  17 +               size_t local_len = sizeof(local_buf);
  18 +               if (sysctl(mib, 2, local_buf, &local_len, NULL, 0) == -1) {
  19 +                       if (errno == ENOMEM)
  20 +                               errno = ENAMETOOLONG;
  21 +                       return (-1);
  22 +               }
  23 +               strncpy(name, local_buf, namelen);
  24 +               name[namelen - 1] = 0;
  25 +       } else {
  26         if (sysctl(mib, 2, name, &namelen, NULL, 0) == -1) {
  27                 if (errno == ENOMEM)
  28                         errno = ENAMETOOLONG;
  29                 return (-1);
  30 +               }
  31         }
  32         return (0);
  33  }