MFC r352567:

Add a workaround for servers which respond RPC_PROGNOTREGISTERED
to a clnt_create() call even when it is actually a program
version mismatch.

Normally the server is supposed to return RPC_PROGVERSMISMATCH
when it supports the specified program but not support
the specified version. Some filers return RPC_PROGNOTREGISTERED
to RQUOTA v2 calls and FreeBSD does not retry with the old
v1 calls. This change fixes this failure scenario.

Submitted by: Jian-Bo Liao
PR: 236179

MFC r336017,r338799

r336017
This exposes ZFS user and group quotas via the normal
quatactl(2) mechanism. (Read-only at this point, however.)
In particular, this is to allow rpc.rquotad query quotas
for NFS mounts, allowing users to see their quotas on the
hosts using the datasets.

The changes specifically:

* Add new RPC entry points for querying quotas.
* Changes the library routines to allow non-UFS quotas.
* Changes rquotad to check for quotas on mounted filesystems,
rather than being limited to entries in /etc/fstab
* Lastly, adds a VFS entry-point for ZFS to query quotas.

Note that this makes one unavoidable behavioural change: if quotas
are enabled, then they can be queried, as opposed to the current
method of checking for quotas being specified in fstab. (With
ZFS, if there are user or group quotas, they're used, always.)

r338799
Author: kib

Fix ZFS VFS op quotactl to follow busy protocol.

Approved by: mav
Sponsored by: iXsystems, inc

Revert r330897:

This was intended to be a non-functional change. It wasn't. The commit
message was thus wrong. In addition it broke arm, and merged crypto
related code.

Revert with prejudice.

This revert skips files touched in r316370 since that commit was since
MFCed. This revert also skips files that require $FreeBSD$ property
changes.

Thank you to those who helped me get out of this mess including but not
limited to gonzo, kevans, rgrimes.

Requested by: gjb (re)

Partial merge of the SPDX changes

These changes are incomplete but are making it difficult
to determine what other changes can/should be merged.

No objections from: pfg

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Use MIN() macro from sys/param.h.

MFC after: 2 weeks.

- Add IPv6 support in quota(1). While rpc.rquotad has supported PF_INET6
for a long time, quota(1) utility supported only PF_INET.

- Clean up confusing changes in f_mntfromname.

- Add an entry for rquotad with rpc/udp6 to inetd.conf.

PR: 194084

Add missing static keywords to quota(1)

Fix quota(1) output.

- Fix calculation of 1024-byte sized blocks from disk blocks shown when -h
option isn't specified. It was broken with quota64 integration.
- In prthumanval(): limit the size of a buffer passed to humanize_number()
to a width of 5 bytes but allow a shorter length if requested. That's what
users expect.

PR: bin/150151
Reviewed by: Kirk McKusick

Remove the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $FreeBSD$ to a few files to keep svn happy.

Discussed with: imp, rwatson

Merger of the quota64 project into head.

This joint work of Dag-Erling Smørgrav and myself updates the
FFS quota system to support both traditional 32-bit and new 64-bit
quotas (for those of you who want to put 2+Tb quotas on your users).

By default quotas are not compiled into the kernel. To include them
in your kernel configuration you need to specify:

options QUOTA # Enable FFS quotas

If you are already running with the current 32-bit quotas, they
should continue to work just as they have in the past. If you
wish to convert to using 64-bit quotas, use `quotacheck -c 64';
if you wish to revert from 64-bit quotas back to 32-bit quotas,
use `quotacheck -c 32'.

There is a new library of functions to simplify the use of the
quota system, do `man quotafile' for details. If your application
is currently using the quotactl(2), it is highly recommended that
you convert your application to use the quotafile interface.
Note that existing binaries will continue to work.

Special thanks to John Kozubik of rsync.net for getting me
interested in pursuing 64-bit quota support and for funding
part of my development time on this project.

In preparation for raising NGROUPS and NGROUPS_MAX, change base
system callers of getgroups(), getgrouplist(), and setgroups() to
allocate buffers dynamically. Specifically, allocate a buffer of size
sysconf(_SC_NGROUPS_MAX)+1 (+2 in a few cases to allow for overflow).

This (or similar gymnastics) is required for the code to actually follow
the POSIX.1-2008 specification where {NGROUPS_MAX} may differ at runtime
and where getgroups may return {NGROUPS_MAX}+1 results on systems like
FreeBSD which include the primary group.

In id(1), don't pointlessly add the primary group to the list of all
groups, it is always the first result from getgroups(). In principle
the old code was more portable, but this was only done in one of the two
places where getgroups() was called to the overall effect was pointless.

Document the actual POSIX requirements in the getgroups(2) and
setgroups(2) manpages. We do not yet support a dynamic NGROUPS, but we
may in the future.

MFC after: 2 weeks

Make quota(1) to compile with WARNS=6:
- ANSI'fy showrawquotas().
- Shut up GCC by initializing bgrace and igrace. The situation
that caused the GCC warning can never happen though.

ctime() expects a time_t, but qup->dqblk.dqb_btime is an int32_t, so for
big endian platforms where time_t is 64bits (ie armeb and sparc64), it will
be a problem.
Use a temporary time_t to work around this.

Submitted by: Matthew Luckie <mjl AT luckie DOT org dot nz>
MFC after: 3 days

Make the human readable numbers printed with the -h option a bit
more human readable by telling the human print routines to use
a smaller buffer to format the value.

This makes it so a value that was previously being printed
as 600000K will now print as 586M.

Use [u]intmax_t to printf unknown integer types.
Make timeprt always allocate memory, to make things a little simpler.
Remove an unused variable.

Insert explicit space between the output fields to prevent them
from running together when a field overflows.

MFC after: 1 week

Add two new options to quota:

-f path
Only print quota information for the file system that path resides on.
-r
Display the quota information in a raw format.

Reviewed by: freebsd-hackers

If a user is over both the soft block limit and soft i-node
limit, quota will report one of the grace times incorrectly.
This is due to it storing the result in a static buffer, and the
routine being called like:
printf("....", ..., timeprnt(btime), timeprnt(itime), ...)

The problem becomes very obvious if you change one of the default
grace periods to be much larger than the other one.

Changed timeprnt to dynamically allocate the string to be displayed.

If two files systems, /a and /b are marked as having quotas enabled
in fstab and they are normally mounted as /a/b, if /b is not mounted,
the various quota utilities will incorrectly operate with the quotas on
/a (silently) when operations are attemted on /b.

Sync up all the hasquota() routines between all the different
quota utilities and change it to detect if the file system we are
attempting to perform quota operations on is not currently mounted
and warn the user accordingly.

PR: bin/38918

Make quota exit with a non-zero status if one more more file
systems are over quota, as documented in the man page.

PR: bin/77918

- Document the default disk block usage unit.
- Add option -h, human-readable output.

PR: docs/53732

Remove an unused #define. md5's with and without this commit match.

Approved by: murray (mentor)

Assign the result of getopt() to an int rather than to a char.

Remove redundant declarations.

Don't overflow the block quota calculations for NFS mounts.

PR: 47607
Submitted by: Eric van Gyzen <vangyzen@stat.duke.edu>

Now that the kernel access control for quotactl(2) appears to work
properly, clean up quota(1). quota(1) has the ability to query
quotas either directly from the kernel, or if that fails, by reading
the quota.user or quota.group files specified for the file system
in /etc/fstab. The setuid bit existed solely (apparently) to let
non-operator users query their quotas and consumption when quotas
weren't enabled for the file system.

o Remove the setuid bit from quota(1).

o Remove the logic used by quota(1) when running setuid to prevent
users from querying the quotas of other users or groups. Note
that this papered over previously broken kernel access control;
if you queried directly using the system call, you could access
some of the data "restricted" by quota(1).

In the new world order, the ability to inspect the (live) quotas of
other uids and gids via the kernel is controlled by the privilege
requirement sysctl. The ability to query via the file is controlled
by the file permissions on the quota database backing files
(root:operator, group readable by default).

Now that the kernel access control for quotactl(2) appears to work
properly, clean up quota(1). quota(1) has the ability to query
quotas either directly from the kernel, or if that fails, by reading
the quota.user or quota.group files specified for the file system
in /etc/fstab. The setuid bit existed solely (apparently) to let
non-operator users query their quotas and consumption when quotas
weren't enabled for the file system.

o Remove the setuid bit from quota(1).

o Remove the logic used by quota(1) when running setuid to prevent
users from querying the quotas of other users or groups. Note
that this papered over previously broken kernel access control.

Add a new flag (-l) that suppresses quota checks on NFS filesystems.

PR: bin/12939
Submitted by: Neil Blakey-Milner <nbm@rucus.ru.ac.za>

Fix a few compiler warnings, sort options and make the usage()
output match the synopsis.

Call getmntinfo with MNT_NOWAIT to avoid hanging if any NFS servers
are down. Avoid trying to send RPCs to the pidXXX@machine names
used in the special amd(8) mounts.

PR: bin/6183
Submitted by: Petr Lampa <lampa@fee.vutbr.cz>

Fix some low-hanging fruit in the warnings department; ANSIfy functions,
sort out some const issues.

remove __P

Changed 'blocks' to 'usage' because we may not be getting quotas from
a ufs filesystem and it may be reporting in K instead of 512b blocks.
This is true when using a vxfs filesystem (on a solaris box) for instance.

PR: bin/14545
Submitted by: Jim Pirzyk
Reviewed by: jkh
MFC after: 1 week

Remove incorrect use of .Nm. Wrap long lines, Unwrap short lines
Options: -> The following options are available:

$Id$ -> $FreeBSD$

Local filesystems are ufs not ffs
Submitted by: "D. Rock" <rock@cs.uni-sb.de>

Don't assume that hp->h_lenght == 4. Be conservative in its use.
Submitted by: J. Assange a long time ago.

Converted to Lite2 mount interface - decide filesystem types by name
instead of by number.

Use err(3). Cosmetic in usage string. Typo in man page.

compare return value from getopt against -1 rather than EOF, per the final
posix standard on the topic.

Code clean up. Prototypes, casting, and parentheses around assignments
used as truth value.

fixed some printf format mismatches and some lines exceeding 80 col's
(thanks to bruce)

Obtained from: NetBSD
replaced our quota with the NetBSD one, then added all changes we made
to our - this is done to support the displaying of quota's over nfs
using the rpc.rquotad

Fix 3 fatal mismatches in format args involving dbtob() and 10 nonfatal
mismatches.

This commit was generated by cvs2svn to compensate for changes in r1590,
which included commits to RCS files with non-trunk default branches.

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