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/release/sysinstall/uc_main.c b/release/sysinstall/uc_main.c
index b6b9906..e66ceb9 100644
--- a/release/sysinstall/uc_main.c
+++ b/release/sysinstall/uc_main.c
@@ -190,7 +190,7 @@ uc_open(char *name){
 	kern->core = mmap((caddr_t)0, sb.st_size, PROT_READ | PROT_WRITE,
 			  MAP_SHARED, kd, 0);
 	kern->incore = 0;
-	if (kern->core == (caddr_t)0) {
+	if (kern->core == MAP_FAILED) {
 	    free(kern);
 	    msgDebug("uc_open: Unable to mmap from %s.\n", kname);
 	    return NULL;