lib: 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

lib: 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/

syslog: fix PID of forking process

Do not cache PID for a process that does not fabricate it,
calls openlog() before forking and does not call exec() thereafter.

PR: 268666
Fixes: e9ae9fa93745669

syslog: fix PID of forking process

Do not cache PID for a process that does not fabricate it,
calls openlog() before forking and does not call exec() thereafter.

PR: 268666
Fixes: e9ae9fa93745669b7dd0341d333257ad6cfe8e37
Tested by: kp
MFC after: 3 days

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syslog(3): expand a commentary adding a reference to RFC 3164.

syslog(3): unbreak log generation using fabricated PID

Recover application ability to supply fabricated PID
embedded into ident that was lost when libc switched
to generation of RFC 5424 log message

syslog(3): unbreak log generation using fabricated PID

Recover application ability to supply fabricated PID
embedded into ident that was lost when libc switched
to generation of RFC 5424 log messages, for example:

logger -t "ident[$$]" -p user.notice "test"

It is essential for long running scripts.
Also, this change unbreaks matching resulted entries
by ident in syslog.conf:

!ident
*.* /var/log/ident.log

Without the fix, the log (and matching) was broken:

Aug 1 07:36:58 hostname ident[123][86483]: test

Now it works as expected and worked before breakage:

Aug 1 07:39:40 hostname ident[123]: test

Differential: https://reviews.freebsd.org/D36005
MFC after: 2 weeks

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libc/syslog: deprecate use of "/var/run/logpriv"

This additional socket was created in 2e89951b6f20 and 240d5a9b1ce76
to try workaround problems with classic PF_UNIX/SOCK_DGRAM sockets.

With recent

libc/syslog: deprecate use of "/var/run/logpriv"

This additional socket was created in 2e89951b6f20 and 240d5a9b1ce76
to try workaround problems with classic PF_UNIX/SOCK_DGRAM sockets.

With recent changes in kernel this trick is no longer needed, so the
trick can be reverted.

In syslogd(8) we would still create the socket for the next several
major releases for compatibility.

Differential revision: https://reviews.freebsd.org/D35305

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libc/syslog: fully deprecate and don't try to open "/dev/log"

The "/dev/log" socket existed in pre-FreeBSD times. Later it was
substituted to a compatibility symlink. The symlink creation was
depr

libc/syslog: fully deprecate and don't try to open "/dev/log"

The "/dev/log" socket existed in pre-FreeBSD times. Later it was
substituted to a compatibility symlink. The symlink creation was
deprecated in FreeBSD 10.2 and 9-STABLE.

Reviewed by: markj
Differential revision: https://reviews.freebsd.org/D35304

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libc: Some enhancements to syslog(3)

This is a re-application of commit
2d82b47a5b4ef18550565dd55628d51f54d0af2e, which was reverted since it
broke with syslog daemons that don't adjust the /dev/log

libc: Some enhancements to syslog(3)

This is a re-application of commit
2d82b47a5b4ef18550565dd55628d51f54d0af2e, which was reverted since it
broke with syslog daemons that don't adjust the /dev/log recv buffer
size. Now that the default is large enough to accomodate 8KB messages,
restore support for large messages.

PR: 260126

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Revert "libc: Some enhancements to syslog(3)"

This reverts commit 2886c93d1bca231260ebc01d4205743ca781f3c7.
The original commit has two problems:

* It sets SO_SNDBUF to be as large as MAXLINE. But

Revert "libc: Some enhancements to syslog(3)"

This reverts commit 2886c93d1bca231260ebc01d4205743ca781f3c7.
The original commit has two problems:

* It sets SO_SNDBUF to be as large as MAXLINE. But for unix domain
sockets, the send buffer is bypassed. Packets go directly to the
peer's receive buffer, so setting and querying SO_SNDBUF is
ineffective. To ensure that the socket can accept messages of a
certain size, it would be necessary to add a SO_PEERRCVBUF socket
option that could query the connected peer's receive buffer size.

* It sets MAXLINE to 8 kB, which is larger than the default sockbuf size
of 4 kB. That's ok for the builtin syslogd, which sets its recvbuf
to 80 kB, but not ok for alternative sysloggers, like rsyslogd, which
use the default size.

As a consequence, writing messages of more than 4 kB with syslog() as a
non-root user while running rsyslogd would cause the logging application
to spin indefinitely within syslog().

PR: 260126
MFC: 2 weeks
Sponsored by: Axcient
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D33199

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libc: Some enhancements to syslog(3)

- Defined MAXLINE constant (8192 octets by default instead 2048) for
centralized limit setting up. It sets maximum number of characters of
the syslog message

libc: Some enhancements to syslog(3)

- Defined MAXLINE constant (8192 octets by default instead 2048) for
centralized limit setting up. It sets maximum number of characters of
the syslog message. RFC5424 doesn't limit maximum size of the message.
Named after MAXLINE in syslogd(8).
- Fixed size of fmt_cpy buffer up to MAXLINE for rendering formatted
(%m) messages.
- Introduced autoexpansion of sending socket buffer up to MAXLINE.

MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D27205

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MFH

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

Merge ^/head r364082 through r364250.

syslog(3): Send proper NILVALUE if gethostname(3) fails.

RFC5424 defines NILVALUE as '-'. Replace its usage with a macro and
separate out the fields to be more clear. fputs(3) is used in some
places

syslog(3): Send proper NILVALUE if gethostname(3) fails.

RFC5424 defines NILVALUE as '-'. Replace its usage with a macro and
separate out the fields to be more clear. fputs(3) is used in some
places to avoid hiding possible format string problems in a macro.

Reviewed by: cem, vangyzen (earlier version)
Sponsored by: Dell EMC

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Clean up the vcs ID strings in libc's gen/ directory.

- Move CSRG IDs into __SCCSID().
- When a file has been copied, consistently use 'From: <tag>' for strings
referencing the version of the sour

Clean up the vcs ID strings in libc's gen/ directory.

- Move CSRG IDs into __SCCSID().
- When a file has been copied, consistently use 'From: <tag>' for strings
referencing the version of the source file copied from in the license
block comment.
- Some of the 'From:' tags were using $FreeBSD$ that was being expanded on
each checkout. Fix those to hardcode the FreeBSD tag from the file that
was copied at the time of the copy.
- When multiple strings are present list them in "chronological" order,
so CSRG (__SCCSID) before FreeBSD (__FBSDID). If a file came from
OtherBSD and contains a CSRG ID from the OtherBSD file, use the order
CSRG -> OtherBSD -> FreeBSD.

Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D15831

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Let syslog(3) use RFC 5424.

With r332099 changing syslogd(8) to parse RFC 5424 formatted syslog
messages, go ahead and also change the syslog(3) libc function to
generate them. Compared to RFC 3164,

Let syslog(3) use RFC 5424.

With r332099 changing syslogd(8) to parse RFC 5424 formatted syslog
messages, go ahead and also change the syslog(3) libc function to
generate them. Compared to RFC 3164, RFC 5424 has various advantages,
such as sub-second precision for log entry timestamps.

As this change could have adverse effects when not updating syslogd(8)
or using a different system logging daemon, add a notice to UPDATING and
increase __FreeBSD_version.

Differential Revision: https://reviews.freebsd.org/D14926

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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 r319973 through 321382.

Merge ^/head r320042 through r320397.

Do not leak syslog_mutex on cancellation.

Make syslog(3) resilent to cancellation occuring in supported deferred
mode. Code must unlock syslog_mutex on cancel, install the cleanup
handler.

Diagnos

Do not leak syslog_mutex on cancellation.

Make syslog(3) resilent to cancellation occuring in supported deferred
mode. Code must unlock syslog_mutex on cancel, install the cleanup
handler.

Diagnosed and tested by: eugen
Discussed with: dchagin
Sponsored by: The FreeBSD Foundation
MFC after: 1 week

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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 sync of head

Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation