ed(1): Fix grammar in comment

Event: Advanced UNIX programming course (Fall'23) at NTHU
Pull Request: https://github.com/freebsd/freebsd-src/pull/1025

Remove copyright strings ifdef'd out

We've ifdef'd out the copyright strings for some time now. Go ahead and
remove the ifdefs. Plus whatever other detritis was left over from other
recent removals.

Remove copyright strings ifdef'd out

We've ifdef'd out the copyright strings for some time now. Go ahead and
remove the ifdefs. Plus whatever other detritis was left over from other
recent removals. These copyright strings are present in the comments and
are largely from CSRG's attempt at adding their copyright to every
binary file (which modern interpretations of the license doesn't
require).

Sponsored by: Netflix

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Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

Merge ^/head r340126 through r340212.

Drop ed(1) "crypto"

You should not be using DES. You should not have been using DES for the
past 30 years.

The ed DES-CBC scheme lacked several desirable properties of a sealed
document system, ev

Drop ed(1) "crypto"

You should not be using DES. You should not have been using DES for the
past 30 years.

The ed DES-CBC scheme lacked several desirable properties of a sealed
document system, even ignoring DES itself. In particular, it did not
provide the "integrity" cryptographic property (detection of tampering), and
it treated ASCII passwords as 64-bit keys (instead of using a KDF like
scrypt or PBKDF2).

Some general approaches ed(1) users might consider to replace the removed
DES mode:

1. Full disk encryption with something like AES-XTS. This is easy to
conceptualize, design, and implement, and it provides confidentiality for
data at rest. Like CBC, it lacks tampering protection. Examples include
GELI, LUKS, FileVault2.

2. Encrypted overlay ("stackable") filesystems (EncFS, PEFS?, CryptoFS,
others).

3. Native encryption at the filesystem layer. Ext4/F2FS, ZFS, APFS, and
NTFS all have some flavor of this.

4. Storing your files unencrypted. It's not like DES was doing you much
good.

If you have DES-CBC scrambled files produced by ed(1) prior to this change,
you may decrypt them with:

openssl des-cbc -d -iv 0 -K <key in hex> -in <inputfile> -out <plaintext>

Reviewed by: allanjude, bapt, emaste
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D17829

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MFhead@r320180

Merge ^/head r319973 through 321382.

Merge ^/head r320573 through r320970.

ed(1): Allow the omission of one address in (.,.) and (.;.) address ranges

With this patch, ",n" is an abbreviation for "1,n", ";n" abbreviates
".;n". The "n," and "n;" variants mean "n,n" and "n;n"

ed(1): Allow the omission of one address in (.,.) and (.;.) address ranges

With this patch, ",n" is an abbreviation for "1,n", ";n" abbreviates
".;n". The "n," and "n;" variants mean "n,n" and "n;n", respectively.
Also, piping to a shell command does not count as a save, so don't reset
the modified flag.

Obtained from: OpenBSD (CVS Rev. 1.58, 1.59)

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Merge ^/head r309817 through r310168.

ed(1): Prevent possible overflows during allocation.

Make sure the parameters used for malloc(3) can hold size_t sizes.
This should help ed(1) handle bigger data in the future.

MFC after: 2 weeks

MFH r289384-r293170

Sponsored by: The FreeBSD Foundation

MFH @r292599

This includes the pluggable TCP framework and other chnages to the
netstack to track for VNET stability.

Security: The FreeBSD Foundation

ed(1): Prevent possible string overflows

Use strlcpy instead of strncpy to guarantee NULL termination.

Pointed out by: imp
CID: 1007252
X-MFC with: r292454

ed(1): Prevent possible string overflows

CID: 1007252
MFC after: 2 weeks

Merge fresh head.

MFC

IFC @ r242684

Sync from head

Fix warnings found by -Wmising-variable-declarations.

This self-written compiler warning, which is hopefully going to be
committed into LLVM sources soon, warns about potentially missing
`static' ke

Fix warnings found by -Wmising-variable-declarations.

This self-written compiler warning, which is hopefully going to be
committed into LLVM sources soon, warns about potentially missing
`static' keywords, similar to -Wmissing-prototypes.

- bin/pax: Move external declaration of chdname and s_mask into extern.h.
- bin/setfacl: Move setfacl.c-specific stuff out of setfacl.h.
- sbin/mount_fusefs: Remove char *progname; use getprogname().
- others: add `static' where possible.

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IFC @230489 (pending review).

IFC to head to catch up the bhyve branch

Approved by: grehan@

Fix some obtuse fprintf tricks in bin/ed.

MFC after: 1 week

Update to current version of head.

ed(1): make WARNS=6 clean

Although argc and argv are never read after the longjmp is complete,
gcc is not clever enough to see that and needlessly warns about it.
So add volatile to silence the comp

ed(1): make WARNS=6 clean

Although argc and argv are never read after the longjmp is complete,
gcc is not clever enough to see that and needlessly warns about it.
So add volatile to silence the compiler.

Approved by: ed (the co-mentor, not ed(1))

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