sh(1): add -l option

-l is required by LSB for login shell, all other shells: bash, zsh,
oksh, mksh, ... implements it.

with -l sh will act as a login shell and read the profile.

MFC After: 1 wee

sh(1): add -l option

-l is required by LSB for login shell, all other shells: bash, zsh,
oksh, mksh, ... implements it.

with -l sh will act as a login shell and read the profile.

MFC After: 1 week
Obtained From: dash (3b7c8442bfe7c2fd0a6b0415df6ddf66a399fd55)
Reviewed by: kib, lme
Differential Revision: https://reviews.freebsd.org/D47681

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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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bin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl s

bin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

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Remove $FreeBSD$: one-line .c pattern

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

sh: make smark a static variable instead of a local in main()

We are modifying it after setjmp and then accessing it after the jump,
so it cannot be a local.

MFC after: 1 week
Differential Revision

sh: make smark a static variable instead of a local in main()

We are modifying it after setjmp and then accessing it after the jump,
so it cannot be a local.

MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D40415

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sh(1): initialize smark to zero in main()

As popstackmark may be called on this without pushstackmark having
been called, we need to initialize it so that we don't get a bogus
comparison inside pops

sh(1): initialize smark to zero in main()

As popstackmark may be called on this without pushstackmark having
been called, we need to initialize it so that we don't get a bogus
comparison inside popstackmark, which would have resulted in a
NULL pointer dereference.

MFC After: 3 days
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D40413

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sh: Add -o verify to use O_VERIFY when sourcing scripts

Add -o verify to sh to make it use O_VERIFY when
sourcing scripts and reading profiles.

Useful in conjunction with mac_veriexec to help prote

sh: Add -o verify to use O_VERIFY when sourcing scripts

Add -o verify to sh to make it use O_VERIFY when
sourcing scripts and reading profiles.

Useful in conjunction with mac_veriexec to help protect at
least some parts of the boot sequence, e.g., /etc/rc*.

Differential revision: https://reviews.freebsd.org/D30464
Reviewed by: jilles, sjg
Obtained from: Stormshield

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sh: implement persistent history storage

Implement persistent history storage:
the strategy is simple at start: loads the existing .sh_history file
at exit dump it.

The implementation respects the

sh: implement persistent history storage

Implement persistent history storage:
the strategy is simple at start: loads the existing .sh_history file
at exit dump it.

The implementation respects the HISTFILE variable and its POSIX
definition: ~/.sh_history is used if HISTFILE is not set.

to avoid sh to create the history file, set HISTSIZE to 0 or HISTFILE to
en empty value

Co-authored-by: pstef
Reviewed by: jilles
Differential Revision: https://reviews.freebsd.org/D29493

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sh: Keep ignored SIGINT/SIGQUIT after set in a background job

If job control is not enabled, a background job (... &) ignores SIGINT and
SIGQUIT, but this can be reverted using the trap builtin in t

sh: Keep ignored SIGINT/SIGQUIT after set in a background job

If job control is not enabled, a background job (... &) ignores SIGINT and
SIGQUIT, but this can be reverted using the trap builtin in the same shell
environment.

Using the set builtin to change options would also revert SIGINT and SIGQUIT
to their previous dispositions.

This broke due to r317298. Calling setsignal() reverts the effect of
ignoresig().

Reported by: bdrewery
MFC after: 1 week

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MFH

Sponsored by: Rubicon Communications, LLC (netgate.com)

Merge ^/head r363583 through r363738.

sh(1): print a newline when ^D quits sh

I've always found this a little bit confusing:
> sh
$ ^D> sh
$ ^D>

Reviewed by: 0mp, jilles
MFC after: 1 week
Differential Revision: https://reviews.freebsd.

sh(1): print a newline when ^D quits sh

I've always found this a little bit confusing:
> sh
$ ^D> sh
$ ^D>

Reviewed by: 0mp, jilles
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D25813

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Merge ^/head r340235 through r340367.

sh: Unify EXERROR and EXEXEC

The difference between EXERROR and EXEXEC was that EXEXEC passed along
exitstatus and EXERROR set exitstatus to 2 in the handling code.

By changing the places that rais

sh: Unify EXERROR and EXEXEC

The difference between EXERROR and EXEXEC was that EXEXEC passed along
exitstatus and EXERROR set exitstatus to 2 in the handling code.

By changing the places that raised EXERROR to set exitstatus to 2, the
handling of EXERROR and EXEXEC becomes the same.

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Merge ^/head r339813 through r340125.

sh: Use exitstatus instead of exerrno to pass EXEXEC status

No functional change is intended.

sh: Don't treat % specially in CDPATH

Merge ^/head r325999 through r326131.

General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier f

General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

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Merge ^/head r314420 through r314481.

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

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Merge head from 7/28

MFC @ r266724

An SVM update will follow this.

IFC @266473

sh: Add more necessary INTOFF/INTON.