src/lib/libc/gen/sysctl.c, branch releng/12.4

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

2018-07-03T17:31:45Z

- Move CSRG IDs into __SCCSID(). - When a file has been copied, consistently use 'From: ' 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

General further adoption of SPDX licensing ID tags.

2017-11-20T19:49:47Z

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.

Renumber copyright clause 4

2017-02-28T23:42:47Z

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 Pull Request: https://github.com/freebsd/freebsd/pull/96

Fix sysctl(3) so it returns the intended values for all mib names in

2015-07-06T01:42:12Z

the 'user' sysctl tree, which have all been coming back 0 or empty since r240176. Differential Revision: https://reviews.freebsd.org/D2945 Reviewed by: sbruno Approved by: jmallett (mentor) MFC after: 3 days

Avoid segfault if name is invalid. Basically, only

2012-09-06T20:15:44Z

check for CTL_USER if the sysctl fails with ENOENT. PR: 169056 Reviewed by: jhb

Add proper const keywords to sysctl(3) parameters.

2010-02-21T13:57:02Z

The `name' and `newp' arguments can be marked const, because the buffers they refer to are never changed. While there, perform some other cleanups: - Remove K&R from sysctl.c. - Implement sysctlbyname() using sysctlnametomib() to prevent duplication of an undocumented kernel interface. - Fix some whitespace nits. It seems the prototypes are now in sync with NetBSD as well.

Per Regents of the University of Calfornia letter, remove advertising

2007-01-09T00:28:16Z

clause. # If I've done so improperly on a file, please let me know.

Eliminate 61 warnings emitted at WARNS=2 (leaving 53 to go).

2003-02-16T17:29:11Z

Only warnings that could be fixed without changing the generated object code and without restructuring the source code have been handled. Reviewed by: /sbin/md5

Fix the style of the SCM ID's.

2002-03-22T21:53:29Z

I believe have made all of libc .c's as consistent as possible.

Make the implementation and documentation agree. Specifically:

1999-01-06T18:11:53Z

- document that sysctl() and sysctlbyname() return 0 on success - if the provided buffer is too small, set errno to ENOMEM and return -1 instead of returning ENOMEM.