svn commit: r192697 - stable/7/usr.sbin/btxld

[Kip Macy]

Author: kmacy
Date: Sun May 24 20:49:22 2009
New Revision: 192697
URL: http://svn.freebsd.org/changeset/base/192697

Log:
  merge 177933
  
  Allow for a zero length 'loader'.

Modified:
  stable/7/usr.sbin/btxld/btxld.c

Modified: stable/7/usr.sbin/btxld/btxld.c
==============================================================================
--- stable/7/usr.sbin/btxld/btxld.c	Sun May 24 20:34:29 2009	(r192696)
+++ stable/7/usr.sbin/btxld/btxld.c	Sun May 24 20:49:22 2009	(r192697)
@@ -336,6 +336,8 @@ gethdr(int fd, struct hdr *hdr)
     if (sb.st_size > MAXU32)
 	errx(1, "%s: Too big", fname);
     hdr->size = sb.st_size;
+    if (!hdr->size)
+	return;
     if ((p = mmap(NULL, hdr->size, PROT_READ, MAP_SHARED, fd,
 		  0)) == MAP_FAILED)
 	err(2, "%s", fname);