Sweep through the tree fixing mmap() usage:

  - Use MAP_FAILED instead of the constant -1 to indicate
    failure (required by POSIX).
  - Removed flag arguments of '0' (required by POSIX).
  - Fixed code which expected an error return of 0.
  - Fixed code which thought any address with the high bit set
    was an error.
  - Check for failure where no checks were present.

Discussed with:	bde

1 files changed, 1 insertions, 1 deletions

diff --git a/sbin/newfs/mkfs.c b/sbin/newfs/mkfs.c
index 20d6832..e7504b0 100644
--- a/sbin/newfs/mkfs.c
+++ b/sbin/newfs/mkfs.c
@@ -183,7 +183,7 @@ mkfs(pp, fsys, fi, fo)
 				MAP_SHARED,
 				fd,
 				0);
-			if((int)membase == -1) {
+			if(membase == MAP_FAILED) {
 				perror("mmap");
 				exit(12);
 			}