<sys/sysmsg.h>: Add missing copyright and license header

Implement clock_nanosleep(2) system call

* Extend the nanosleep1() function in kern_time.c to support the
clock_nanosleep(2) system call. Add {kern,sys}_clock_nanosleep()
functi

Implement clock_nanosleep(2) system call

* Extend the nanosleep1() function in kern_time.c to support the
clock_nanosleep(2) system call. Add {kern,sys}_clock_nanosleep()
functions and update kern_nanosleep() accordingly.

* Add clock_nanosleep() syscall to syscalls.master and regenerate
syscall-related files.

* Update libc symbols with the new syscall.

* Add clock_nanosleep() warpper in libthread_xu.

* Update nanosleep.2 man page to describe clock_nanosleep().

* Update <time.h> and bump __DragonFly_version.

This work is loosely based on the FreeBSD implementation:
https://reviews.freebsd.org/rS315526

This clock_nanosleep(2) syscall passed all tests in the Open POSIX Test
Suite [0]:

conformance/interfaces/clock_nanosleep/1-1: execution: PASS
conformance/interfaces/clock_nanosleep/1-2: execution: PASS
conformance/interfaces/clock_nanosleep/1-3: execution: PASS
conformance/interfaces/clock_nanosleep/1-4: execution: PASS
conformance/interfaces/clock_nanosleep/1-5: execution: PASS
conformance/interfaces/clock_nanosleep/2-1: execution: PASS
conformance/interfaces/clock_nanosleep/2-2: execution: PASS
conformance/interfaces/clock_nanosleep/2-3: execution: PASS
conformance/interfaces/clock_nanosleep/3-1: execution: PASS
conformance/interfaces/clock_nanosleep/4-1: execution: PASS
conformance/interfaces/clock_nanosleep/5-1: execution: PASS
conformance/interfaces/clock_nanosleep/6-1: execution: PASS
conformance/interfaces/clock_nanosleep/9-1: execution: PASS
conformance/interfaces/clock_nanosleep/8-1: execution: PASS
conformance/interfaces/clock_nanosleep/10-1: execution: PASS
conformance/interfaces/clock_nanosleep/11-1: execution: PASS
conformance/interfaces/clock_nanosleep/13-1: execution: PASS
conformance/interfaces/clock_nanosleep/15-1: execution: PASS

[0] Open POSIX Test Suite: http://posixtest.sourceforge.net/

Reviewed-by: swildner, dillon, tuxillo, zach

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nanosleep(2): Return EINVAL if tv_sec < 0 (POSIX-compliant)

When the requested sleep interval is negative, return EINVAL. This
behavior is the same as Linux and makes our nanosleep(2) p

nanosleep(2): Return EINVAL if tv_sec < 0 (POSIX-compliant)

When the requested sleep interval is negative, return EINVAL. This
behavior is the same as Linux and makes our nanosleep(2) pass all tests
in the Open POSIX Test Suite [0].

conformance/interfaces/nanosleep/1-1: execution: PASS
conformance/interfaces/nanosleep/1-2: execution: PASS
conformance/interfaces/nanosleep/1-3: execution: PASS
conformance/interfaces/nanosleep/2-1: execution: PASS
conformance/interfaces/nanosleep/3-1: execution: PASS
conformance/interfaces/nanosleep/3-2: execution: PASS
conformance/interfaces/nanosleep/4-1: execution: PASS
conformance/interfaces/nanosleep/5-1: execution: PASS
conformance/interfaces/nanosleep/5-2: execution: PASS
conformance/interfaces/nanosleep/6-1: execution: PASS
conformance/interfaces/nanosleep/7-1: execution: PASS
conformance/interfaces/nanosleep/7-2: execution: PASS
conformance/interfaces/nanosleep/10000-1: execution: PASS

[0] Open POSIX Test Suite: http://posixtest.sourceforge.net/

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nanosleep(2): Plug a memory disclourse and be POSIX-compliant

The nanosleep1() called by sys_nanosleep() would only update rmt on
EINTR, but it can also return other errors, such as EINV

nanosleep(2): Plug a memory disclourse and be POSIX-compliant

The nanosleep1() called by sys_nanosleep() would only update rmt on
EINTR, but it can also return other errors, such as EINVAL. And in that
case, sys_nanosleep() would update the user-space rmtp by copying
garbage from its stack frame. This is not only a kernel memory
disclourse, but also not POSIX-compliant.

Fix sys_nanosleep() to update rmtp only on EINTR. In addition, zero the
kernel rmt variable for double safety.

Obtained-from: FreeBSD (r315510)
Reviewd-by: dillon

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kern/makesyscalls.sh: Revert change to '#endif' comment

Well, I misread the '#ifdef _KERNEL' with '#ifndef', so the comment of
'#endif' is right. Revert the recent change to this part ;

kern/makesyscalls.sh: Revert change to '#endif' comment

Well, I misread the '#ifdef _KERNEL' with '#ifndef', so the comment of
'#endif' is right. Revert the recent change to this part ;)

Reported-by: swildner

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<sys/sysproto.h>: Regenerate after 'makesyscalls.sh' update

kern/makesyscalls.sh: Better place #undef and fix #endif comments

* Move the placement of '#undef PAD_' so it just follows the end of
syscall argument section.

* Fix the comme

kern/makesyscalls.sh: Better place #undef and fix #endif comments

* Move the placement of '#undef PAD_' so it just follows the end of
syscall argument section.

* Fix the comments of '#endif', so that the '_SYS_SYSPROTO_H_' and
'_KERNEL' hierachies are now correct.

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test/vmm: Refactor Makefile by using <bsd.prog.mk>

Use ${} instead of $() in various makefiles

Also use ${.TARGET} and ${.ALLSRC] wherever impossible.

Minor style adjustment in at(1)'s makefiles.

Fix various mistakes (s/it were/it was/) in manual pages.

libutil/setusercontext: Apply FreeBSD's b149798e50fac1113a7.

FBSD commit msg:

Fix a clang 3.5 warning about abs(3) being given an argument of type
quad_t in setusercontext(). W

libutil/setusercontext: Apply FreeBSD's b149798e50fac1113a7.

FBSD commit msg:

Fix a clang 3.5 warning about abs(3) being given an argument of type
quad_t in setusercontext(). While here, sanitize the clamping of the
priority value, and use the correct type for the return value of
login_getcapnum().

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usr.sbin/fstyp: Fix exfat detection

from FreeBSD ddf61156132b610915325769cbb93ea11be0d433

Add a smbfs(5) manual page (taken from FreeBSD).

libc/citrus: Cleanup the DFprivate_1.0 section of the Symbol.map.

None of these symbols were ever in our libc.

libc/citrus: Remove two unused header files.

talkd: Find users in more than one talk request.

talkd was written to use `utmpentry` from `who`, which
caches the results of read the `utmpx` file. However,
talkd is usually invoke

talkd: Find users in more than one talk request.

talkd was written to use `utmpentry` from `who`, which
caches the results of read the `utmpx` file. However,
talkd is usually invoked from inetd `wait` mode; it's
possible that a user might login after `talkd` starts;
with the cached utmpx data, one can't `talk` to that
user.

Further, consumption of the utmp data nulls it out for
subsequent requests. The result is that the first talk
succeeds, but subsequent requests fail.

The fix is to avoid using the `utmpentry` machinery,
and just read `utmp` directly every time we need to.

Signed-off-by: Dan Cross <cross@gajendra.net>

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talk: talk into account sa_len field in sockaddr.

`osockaddr` predates the introduction of the sa_len
field in `struct sockaddr`. The family has moved to
the second field in the str

talk: talk into account sa_len field in sockaddr.

`osockaddr` predates the introduction of the sa_len
field in `struct sockaddr`. The family has moved to
the second field in the structure, but `talk` didn't
account for this when it constructs a `sockaddr_in`
to send data to another system.

The failure case was kind of odd: one could `talk`
to a user on, say, a Linux machine, the remote user
could respond, and things would work as expected.
However, the inverse case, where a user on Linux
tried to `talk` to a user on Dragonfly failed: the
talk announcement would be made, but an attempt to
respond would fail with a protocol error since the
`sin_family` field would be zero.

Signed-off-by: Dan Cross <cross@gajendra.net>

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Update the pciconf(8) database.

January 11, 2021 snapshot from https://pci-ids.ucw.cz

Sync cmp(1) with FreeBSD. Mainly for 80445b7a3f738e0b which fixes a bug.

Reported-by: William Ahern <william@25thandclement.com>

hexdump.1/operator.7: Use Ta instead of literal tabs.

kernel - Fix atime field for PTYs

* Fix the atime field for PTYs. A calculation in the shortcut code
that avoids having to update the timestamp on every read() or
write() was re

kernel - Fix atime field for PTYs

* Fix the atime field for PTYs. A calculation in the shortcut code
that avoids having to update the timestamp on every read() or
write() was reversed.

Reported-by: dancrossnyc

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finger - Take into account terminal session ID

* The 'w' command tries to figure out what process is running on a TTY
line and emit that as part of its output. Update its heuristics to

finger - Take into account terminal session ID

* The 'w' command tries to figure out what process is running on a TTY
line and emit that as part of its output. Update its heuristics to
select the "most interesting" process.

Reported-by: dancrossnyc
Bug-report: #3260

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finger - Remove -T option

* This doesn't appear to work against anything, so remove it. FreeBSD
apparently removed this option in 2007.

Reported-by: dancrossnyc
Bug-report

finger - Remove -T option

* This doesn't appear to work against anything, so remove it. FreeBSD
apparently removed this option in 2007.

Reported-by: dancrossnyc
Bug-report: #3258

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finger - Fix 'lastlogx' logic

* finger(1) was simply incorrect in how it was trying to access
the `lastlogx` database; fix it to use the correct interface.

Reported-by: dancro

finger - Fix 'lastlogx' logic

* finger(1) was simply incorrect in how it was trying to access
the `lastlogx` database; fix it to use the correct interface.

Reported-by: dancrossnyc
Bug-report: #3257

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finger - Reduce printed Login name field width so line fits 80 cols

* With the TTY field expanded, reduce the Login name field width
so the output still fits in 80 cols.