CVS log for src/usr.bin/cksum/extern.h

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cksum: use POSIX type uint32_t instead of u_int32_t

Separate out the CRC functions in a manner that actually makes them useful
for other program binaries.
Fixes build of 'config' where I added code (commented out) to use the CRC
function - but didn't comment out the #include :-(

Apply patch (requested by elad in ticket #754):
- Deprecate -1, -2, -4, -5, -6, -m flags.
- Add -a <algorithm> flag.
- Support SHA2 hashing.
cksum(1) now supports ``sha256'', ``sha384'', and ``sha512''.

Avoid defining max. hash length ugliness simply by passing NULL for the
buffer to the File routines.

Noted by pooka@.

Use MAXHASHLEN to indicate largest possible hash.
Fixes buffer overflow found by xtraeme@.

Add support for SHA2 in cksum.

whitespace, remove main() prototype.

* Kill __P()
* ANSIfy
* No parenthesis are needed around the return value

Pull up revision 1.13 (requested by kleink in ticket #1580):
Update to keep file lengths in appropriate data types (off_t, as opposed
to u_int32_t).

Update to keep file lengths in appropriate data types (off_t, as opposed
to u_int32_t).

Overhaul how `build.sh tools' are used:

    *	Rename "config.h" to "nbtool_config.h" and
	HAVE_CONFIG_H to HAVE_NBTOOL_CONFIG_H.
	This makes in more obvious in the source when we're using
	tools/compat/config.h versus "standard autoconf" config.h

    *	Consistently move the inclusion of nbtool_config.h to before
    	<sys/cdefs.h> so that the former can provide __RCSID() (et al),
    	and there's no need to protect those macros any more.

These changes should make it easier to "tool-ify" a program by adding:
	#if HAVE_NBTOOL_CONFIG_H
	#include "nbtool_config.h"
	#endif
to the top of the source files (for the general case).

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22365, verified by myself.

Add the necessary bits to make cksum buildable as a host tool.

Apparently changing crc() to ccrc() was bad, since mtree does a reachover.
Revert ccrc() to crc() and change local variables called crc to thecrc
instead.

Rename the crc() function to ccrc() since that removes a compiler warning
when WARNS=2.

Add MD2, MD4, SHA1, and RMD160 support to cksum.  Adding new hashes to
cksum(1) should now be easy.

Add support for generating MD5 checksums, partially derived from the
FreeBSD md5(1) program.  MD5 checksums may be generated by using the
"-m" flag to cksum, or by invoking this program as "md5".

merged with 4.4Lite

Import from 4.4Lite

cksum uses 32-bit quantites, internally

update to the latest cksum utility from uunet.  this one is posix
compliant (i think), and fixes a bogon in the old CRC calculation.
yes, that's right, the CRC's it generates are different.

Add RCS identifiers.

initial import of 386bsd-0.1 sources

Initial revision