File grub2-editenv-add-warning-message.patch of Package grub2.16180
Index: grub-2.02~beta2/util/editenv.c
===================================================================
--- grub-2.02~beta2.orig/util/editenv.c
+++ grub-2.02~beta2/util/editenv.c
@@ -30,12 +30,14 @@
#include <string.h>
#define DEFAULT_ENVBLK_SIZE 1024
+#define GRUB_ENVBLK_MESSAGE "# WARNING: Do not edit this file other than by grub2-editenv\n"
void
grub_util_create_envblk_file (const char *name)
{
FILE *fp;
char *buf;
+ char *pbuf;
char *namenew;
buf = xmalloc (DEFAULT_ENVBLK_SIZE);
@@ -46,9 +48,13 @@ grub_util_create_envblk_file (const char
grub_util_error (_("cannot open `%s': %s"), namenew,
strerror (errno));
- memcpy (buf, GRUB_ENVBLK_SIGNATURE, sizeof (GRUB_ENVBLK_SIGNATURE) - 1);
- memset (buf + sizeof (GRUB_ENVBLK_SIGNATURE) - 1, '#',
- DEFAULT_ENVBLK_SIZE - sizeof (GRUB_ENVBLK_SIGNATURE) + 1);
+ pbuf = buf;
+ memcpy (pbuf, GRUB_ENVBLK_SIGNATURE, sizeof (GRUB_ENVBLK_SIGNATURE) - 1);
+ pbuf += sizeof (GRUB_ENVBLK_SIGNATURE) - 1;
+ memcpy (pbuf, GRUB_ENVBLK_MESSAGE, sizeof (GRUB_ENVBLK_MESSAGE) - 1);
+ pbuf += sizeof (GRUB_ENVBLK_MESSAGE) - 1;
+ memset (pbuf , '#',
+ DEFAULT_ENVBLK_SIZE - sizeof (GRUB_ENVBLK_SIGNATURE) - sizeof (GRUB_ENVBLK_MESSAGE) + 2);
if (fwrite (buf, 1, DEFAULT_ENVBLK_SIZE, fp) != DEFAULT_ENVBLK_SIZE)
grub_util_error (_("cannot write to `%s': %s"), namenew,