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/

df: Return non-zero status on write failure.

While here, complete the libxo conversion and switch return value to standard constants.

MFC after: 1 week
Sponsored by: Klara, Inc.
Differential revisi

df: Return non-zero status on write failure.

While here, complete the libxo conversion and switch return value to standard constants.

MFC after: 1 week
Sponsored by: Klara, Inc.
Differential revision: https://reviews.freebsd.org/D38097

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df: do not report a 100% full inode usage on fs without inodes

Before:
devfs 2 2 0 100% 0 0 100% /dev

After:
devfs 2 2 0 100% 0

df: do not report a 100% full inode usage on fs without inodes

Before:
devfs 2 2 0 100% 0 0 100% /dev

After:
devfs 2 2 0 100% 0 0 - /dev

The previous behaviour was confusing for end users and many monitoring tools

Note the linux df tools is also using the same syntax '-' for such filesystem

MFC After: 2 weeks
Reviewed by: manu, emaste, imp
Differential Revision: https://reviews.freebsd.org/D34515

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bin/df: allow -t option to be used together with -l

The df command provides a -l option to exclude all non-local file
systems and a -t option with a (positive or negative) list of file
system types

bin/df: allow -t option to be used together with -l

The df command provides a -l option to exclude all non-local file
systems and a -t option with a (positive or negative) list of file
system types to display.

This commit adds support for a combination of -l and -t. If both are
specified, the parameter list of the -t option is applied on top of
the selection of öocal file systems (independently of the order of
the -l and -t options).

E.g., "df -t noprocfs,sysfs -l" will select all local file systems
except those of type procfs and sysfs.

PR: 260921
Approved by: imp
Relnotes: yes
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D33748

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df: remove the unused fstype var

Found with cc --analyze

Sponsored by: Rubicon Communications, LLC ("Netgate")

df: Remove support for mounting devices

This was marked deprecated in r329092, over two and a half years ago.
This functionality is also buggy per PR 237368.

PR: 237368
Reviewed by: brooks, cem, e

df: Remove support for mounting devices

This was marked deprecated in r329092, over two and a half years ago.
This functionality is also buggy per PR 237368.

PR: 237368
Reviewed by: brooks, cem, emaste, imp
Differential Revision: https://reviews.freebsd.org/D27197

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Add a deprecation warning when using the feature which mounts devices
to see how much space it on them.

Adjust MOUNT_CHAR_DEVS to allow the free space of already mounted
devices to be displayed and

Add a deprecation warning when using the feature which mounts devices
to see how much space it on them.

Adjust MOUNT_CHAR_DEVS to allow the free space of already mounted
devices to be displayed and report an appropriate error if the
device isn't mounted.

Reviewed by: cem
MFC after: 1 week
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D8801

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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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df(1): Add --si as an alias for -H

Reviewed by: cem (earlier version), emaste
Approved by: emaste (mentor)
Differential Revision: https://reviews.freebsd.org/D11749

Use {T:Capacity} for header so html output looks tidy

Submitted by: phil
Approved by: sjg

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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Use nmount(2) rather than the obsolete mount(2).

Reviewed by: cem
MFC after: 1 week
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D8513

Mount filesystems without executable permissions since they should never
be used.

Reviewed by: cem
MFC after: 1 week
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D8513

Put the undocumented df feature of mounting filesystems from device nodes
under an ifdef. Leave enabled.

Reviewed by: cem
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D8513

df(1): Allow duplicate -l flags gracefully

Rather than producing a misleading error message when duplicate -l flags are
provided to df(1), simply ignore extra flags and proceed as if only one was
sp

df(1): Allow duplicate -l flags gracefully

Rather than producing a misleading error message when duplicate -l flags are
provided to df(1), simply ignore extra flags and proceed as if only one was
specified. This seems most reasonable given the usage for -l:

-l Only display information about locally-mounted file systems.

l and t flags still conflict, as before.

PR: 208169
Reported by: by at reorigin.com
Reviewed by: allanjude

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Use exit() instead of return in main().

MFC after: 2 weeks

Convert to use libxo.

Obtained from: Phil Shafer <phil@juniper.net>
Sponsored by: Juniper Networks, Inc.

Don't appease clang static analyzer after all and roll back
the free(3) of mntbuf ... again. There's no point in doing
useless extra work when we're about to exit.

See also r240565.

Not reading fil

Don't appease clang static analyzer after all and roll back
the free(3) of mntbuf ... again. There's no point in doing
useless extra work when we're about to exit.

See also r240565.

Not reading file history: uqs

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bin/df: Fix unitialized use in prtstat

While here:
- use NULL in the context of pointers
- use memset instead of bzero throughout the file
- free memory to appease clang static analyzer

Found by: C

bin/df: Fix unitialized use in prtstat

While here:
- use NULL in the context of pointers
- use memset instead of bzero throughout the file
- free memory to appease clang static analyzer

Found by: Coverity Scan (the UNINIT one)

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- Wrap long line;
- Add -, to SYNOPSIS section.

MFC after: 2 weeks

Handle large negative block counts correctly.

MFC after: 2 weeks

Update man pages and clarify a number of options.
Rework block count calculations to work correctly with small "block" sizes.

MFC after: 14 days

Add , (comma) option to print sizes grouped and separated by thousands
using the non-monetary separator returned by localeconv(3), typically
a comma or period.

MFC after: 14 days