Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

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

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

kill: Note that this is used both as a normal program and a shell builtin.

Make sys_signame upper case.

This matches the constants from <signal.h> with 'SIG' removed, which POSIX
requires kill and trap to accept and 'kill -l' to write.

'kill -l', 'trap', 'trap -l' output is now upper case.

In Turkish locales, signal names with an upper case 'I' are now accepted,
while signal names with a lower case 'i' are no longer accepted, and the
output of 'killall -l' now contains proper capital 'I' without dot instead
of a dotted capital 'I'.

sh: Add kill builtin.

This allows specifying a %job (which is equivalent to the corresponding
process group).

Additionally, it improves reliability of kill from sh in high-load
situations and ensures "kill" finds the correct utility regardless of PATH,
as required by POSIX (unless the undocumented %builtin mechanism is used).

Side effect: fatal errors (any error other than kill(2) failure) now return
exit status 2 instead of 1. (This is consistent with other sh builtins, but
not in NetBSD.)

Code size increases about 1K on i386.

Obtained from: NetBSD

kill: Stop processing if a syntactically invalid pid is encountered.

So a command like
kill _HUP 1
now fails without sending SIGTERM to init.

The behaviour when kill(2) fails remains unchanged: processing continues.
This matches other implementations and POSIX and is useful for killing
multiple processes at once when some of them may already be gone.

PR: bin/40282

Do not restrict the allowed signals that can be specified by number
to the list of signals that has symbolic name. It was impossible to
send rt signals with kill(1) due to the check.

MFC after: 1 week

/*- or .\"- or #- to begin license clauses.

Remove clause 3 from the UCB licenses.

OK'ed by: imp, core

static and const.

Use sys_nsig instead of the static NSIG. DragonflyBSD kill.c:1.3

Obtained from: DragonflyBSD

Quiet warnings about copyright[].

Consistently use __FBSDID

Support the "--" end of options marker, useful to disambiguate between
signal numbers and process groups (negative pid arguments), and
required by SUSv3.

o __P has been reoved
o Old-style K&R declarations have been converted to new C89 style
o register has been removed
o prototype for main() has been removed (gcc3 makes it an error)
o int main(int argc, char *argv[]) is the preferred main definition.
o Attempt to not break style(9) conformance for declarations more than
they already are.

Silence WARNS=2 and BDECFLAGS on the i386 and alpha

MFC After: 1 week

$Id$ -> $FreeBSD$

Correct use of .Nm. Add rcsid.

Disallow empty arguments (eg: '') as process ids.
PR: 2631
Submitted by: Arne Henrik Juul <arnej@imf.unit.no>

Cosmetic change in usage string.

Signal # NSIG (32) is invalid.
Obtained from: {Net|Open}BSD

Revert $FreeBSD$ to $Id$

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

Merge Lite2 mods, and -Wall cleaning.

Allow 0 as a signal number to match the man page.
Noticed by: Mike Murphy <mrm@Sceard.COM>

Added $Id$

This commit was generated by cvs2svn to compensate for changes in r1556,
which included commits to RCS files with non-trunk default branches.

BSD 4.4 Lite bin Sources