Even more cleanups to dd(1). This is probably the culmination of the

BDEification process of dd(1). Most of the changes are from BDE's archive.
Support for negative offsets is gone again, but the case where you
lseek() onto byte -1 of something from a negative offset using seek/skip
is fixed; if you end up on -1, you won't get a false positive lseek failure.
  The biggest changes are to data types (more size_t, for instance) and
argument parsing. skip/seek on /dev/{,k}mem now occurs (instead of "read
until you reach the offset") due to mem devices now being D_DISK. Some
const things are now correctly declared as such, and the "case table"
building is better. The only thing that seems to be left to make dd(1)
everything TOG wants it to be is l10n.

1 files changed, 6 insertions, 4 deletions

diff --git a/bin/dd/extern.h b/bin/dd/extern.h
index a5495ad..c588b76 100644
--- a/bin/dd/extern.h
+++ b/bin/dd/extern.h
@@ -58,9 +58,11 @@ extern IO in, out;
 extern STAT st;
 extern void (*cfunc)();
 extern quad_t cpy_cnt;
-extern int cbsz;
+extern size_t cbsz;
 extern u_int ddflags;
 extern quad_t files_cnt;
-extern u_char *ctab;
-extern u_char a2e_32V[], a2e_POSIX[], a2ibm_32V[], a2ibm_POSIX[], e2a_32V[];
-extern u_char e2a_POSIX[], l2u[], u2l[];
+extern const u_char *ctab;
+extern const u_char a2e_32V[], a2e_POSIX[];
+extern const u_char e2a_32V[], e2a_POSIX[];
+static const u_char a2ibm_32V[], a2ibm_POSIX[];
+extern u_char casetab[];