Cross Reference: /src/bin/ps

History log of /src/bin/ps
Revision	Date	Author	Comments
1.31	14-Sep-2021	christos	Provide symbolic printing of some keywords by capitalizing them.
1.30	06-Apr-2021	simonb	We only need -Wno-format-y2k for print.c .
1.29	14-Aug-2011	christos	branches: 1.29.44; Document non-literal formats
1.28	19-Jun-2002	jdolecek	g/c procfs fallback code, it's redundant now that we use sysctl to get process info
1.27	26-May-2000	simonb	branches: 1.27.6; Use new sysctl/kvm interfaces. This will stop the "proc size mismatch" errors when internal kernel structures change size. Also remove the sgid bit - all live kernel data is accessed through the sysctl interface.
1.26	12-Sep-1999	chs	the PMAP_NEW option is gone as the new interface is no longer optional.
1.25	26-Mar-1999	bgrayson	Added experimental fallback /proc-based lookup. Warnings are printed when the fallback method is used, as the results could be untrustworthy if an intruder is present. It is highly likely that NetBSD-1.5 will have an improved kvm interface for reading process information, at which point this code can be garbage-collected. Also added a word to the man page -x option description while I was here.
1.24	24-Mar-1999	mrg	completely remove Mach VM support. all that is left is the all the header files as UVM still uses (most of) these.
1.23	25-Aug-1998	tv	Add CWARNFLAGS+=-Wno-format-y2k.
1.22	25-Aug-1998	ross	Kill the CFLAGS+=-Wno-format-y2k which will go, for now, into bsd.sys.mk It wasn't working anyway, although that could have been fixed by moving it down below the .include <bsd.prog.mk> line. It's not completely clear that this usage of %y is in fact y2k-safe, it seems safer for now to have a single XXX option in bsd.sys.mk, and we need to rev this anyway for -Wno-uninitialized
1.21	21-Aug-1998	tv	This needs strftime()'s %y; use -Wno-format-y2k.
1.20	18-Feb-1998	perry	add -DPMAP_NEW if PMAP_NEW is on in mk.conf
1.19	09-Feb-1998	mrg	add -DUVM to CPPFLAGS if defined(UVM)
1.18	20-Jul-1997	christos	Remove WARNS=1 from all the subdirectory Makefiles, and add it to Makefile.inc now that all /bin has been cleaned.
1.17	20-Jul-1997	christos	Fix compiler warnings Add WARNS=1
1.16	26-Oct-1995	jtc	LIBMATH -> LIBM (PR# 1688)
1.15	21-May-1995	mycroft	Split out some helper functions again.
1.14	18-May-1995	mycroft	Create and strvis(3) the argument and environment lists only as needed. Do not keep extra copies around.
1.13	21-Mar-1995	cgd	convert to new RCS id conventions.
1.12	03-Aug-1994	deraadt	do not need -I/sys
1.11	03-Jul-1994	deraadt	devname is in libc now
1.10	17-May-1994	pk	Restore "${DESTDIR}" in CFLAGS.
1.9	12-May-1994	mycroft	Need devname.c.
1.8	09-May-1994	cgd	clean up import
1.7	28-Jan-1994	cgd	needs -lkvm, not -lutil
1.6	14-Aug-1993	mycroft	Fix library dependencies.
1.5	01-Aug-1993	mycroft	Add RCS identifiers.
1.4	17-Jun-1993	mycroft	Don't need -I/sys. (Why was it here?)
1.3	23-Mar-1993	cgd	changed "Id" to "Header" for rcsids
1.2	22-Mar-1993	cgd	added rcs ids to all files
1.1	21-Mar-1993	cgd	branches: 1.1.1; Initial revision
1.1.1.2	09-May-1994	cgd	new ps, to match libkvm
1.1.1.1	21-Mar-1993	cgd	initial import of 386bsd-0.1 sources
1.27.6.1	23-Apr-2002	nathanw	Add support for handling multi-LWP processes by selecting one LWP as "representative" of the process. Also add a -s option that prints a line for each LWP. While I'm here, remove the /proc fallback code.
1.29.44.2	21-Apr-2020	martin	Ooops, restore accidently removed files from merge mishap
1.29.44.1	21-Apr-2020	martin	Sync with HEAD
1.7	03-Jul-1994	mycroft	Clean up deleted files.
1.6	09-May-1994	cgd	clean up import
1.5	01-Aug-1993	mycroft	Add RCS identifiers.
1.4	21-Apr-1993	proven	Changed hash_open to dbopen.
1.3	23-Mar-1993	cgd	changed "Id" to "Header" for rcsids
1.2	22-Mar-1993	cgd	added rcs ids to all files
1.1	21-Mar-1993	cgd	branches: 1.1.1; Initial revision
1.1.1.2	09-May-1994	cgd	new ps, to match libkvm
1.1.1.1	21-Mar-1993	cgd	initial import of 386bsd-0.1 sources
1.39	09-Dec-2017	kamil	branches: 1.39.4; ps: Rename local routine name from uname to usrname This removes symbol name routine clash with libc's uname(3). This allows to build ps(1) against LLVM Sanitizers. Sponsored by <The NetBSD Foundation>
1.38	02-Dec-2016	christos	provide a tree like display with -d, from FreeBSD
1.37	28-Nov-2016	rin	Calculate CPU usage (pcpu) once per process if it is required. This change significantly improves performance for slow machines when output is sorted by pcpu. ok martin
1.36	28-Nov-2016	rin	for donlist{,_sysctl}: - obtain log_ccpu = log(ccpu) rather than ccpu itself - use common default values and warn users appropriately when errors occur ok martin
1.35	20-Apr-2014	dholland	branches: 1.35.6; Use an enum type for PRINTMODE vs. WIDTHMODE. Compiler output diffs have been checked.
1.34	15-Jan-2014	mlelstv	branches: 1.34.2; Add an LTIME column that prints lwp cputime.
1.33	31-May-2010	rmind	branches: 1.33.6; 1.33.12; Fix ps(1) and top(1) to show reasonable CPU numbers i.e. cpu_index() provided by the kernel, instead of CPU order number, which is generally random.
1.32	10-Feb-2008	christos	Add a CPUID keyword; idea and some of the code from Anon Ymous
1.31	01-Sep-2007	yamt	add a keyword "lname", to print l_name.
1.30	29-Oct-2006	christos	branches: 1.30.8; Add support for printing the emulation of the process.
1.29	02-Oct-2006	apb	* When all columns are given null customised headers, the blank header line is not printed at all. This is specified in P1003.1-2004 (SUSv3), and is useful. * Customised headers may contain embedded space, commas and equals signs. To specify multiple customised headers, use multiple -o or -O options. This is specified (for "-o", not for "-O") in P1003.1-2004 (SUSv3), and is useful. * When a column is given a null (blank) customised header, it keeps its default minimum width. This is specified in P1003.1-2004 (SUSv3), and seems harmless. * Fix a bug that made it impossible to print the same keyword multiple times, with different customised headers each time. (Previously, the last customised header was used for all instances of the keyword.) * Make the behaviour of "-O" more useful. The first -O option adds the default keywords only if there have not yet been any formatting options, and multiple -O options now insert their keywords in adjacent positions. Now {ps -j -O %cpu} is like {ps -j} with one extra column; Previously, it would have had all the columns implied by "-j", plus all the default columns, plus the extra column specified by "-O". * Convert from home-grown linked lists to SIMPLEQ lists. Discussed in tech-userlevel.
1.28	26-Jun-2005	christos	sprinkle a little const, and now everything compiles with WARNS=3
1.27	27-Mar-2004	simonb	Add support for the POSIX.2 "etime" keyword - shows the elapsed time since the process was started. Fix a couple of style nits as well. Fix for part of PR standards/11224.
1.26	27-Mar-2004	simonb	KNF, ANSFify, de-__P, unC++ify, white space nits.
1.25	07-Aug-2003	agc	Move UCB-licensed code from 4-clause to 3-clause licence. Patches provided by Joel Baker in PR 22249, verified by myself.
1.24	06-Mar-2003	dsl	- add keywords for utime, stime and ctime (output sss.ssssss if small) - fiddle with keyword table - mainly to keep width under 80 cols - add -k keylist so sort output - don't use logs to work out field width, get -MAXINT right - user defined headers can be 1 char (actually they can be zero length) so ?? in tty column isn't guaranteed to be wider than header - remove some long long casts (compiles on sparc64 still) - use kvm_openfiles(NULL, NULL, NULL, KVN_NO_FILES, ..) unless core file specified, (approved by christos)
1.23	01-Mar-2003	atatat	Add p_svuid and p_svgid to kinfo_proc2. Populate them in the kernel and in libkvm. Then teach ps how to show them to you. Also, teach ps how to show the names for all the uids, the rest of the group numbers, and the "group access list".
1.22	18-Jan-2003	thorpej	Merge the nathanw_sa branch.
1.21	19-Jun-2002	jdolecek	g/c procfs fallback code, it's redundant now that we use sysctl to get process info
1.20	14-Jul-2001	matt	branches: 1.20.2; Retrieve maxslp & uspace from kernel instead of using defines. Needed for shared arm code.
1.19	07-Jun-2000	simonb	Calculate field widths on the fly so that all columns line up nicely and make more effective use of screen real estate when some columns (eg USER and VSZ) didn't need the full default width.
1.18	02-Jun-2000	simonb	G/C evar() - now that everything is in the one structure it was exactly the same as pvar().
1.17	26-May-2000	simonb	branches: 1.17.2; Use new sysctl/kvm interfaces. This will stop the "proc size mismatch" errors when internal kernel structures change size. Also remove the sgid bit - all live kernel data is accessed through the sysctl interface.
1.16	03-Dec-1999	simonb	Since we have an "extern.h", put all external variable declarations in that file and not sprinkled around various .c files.
1.15	03-Dec-1999	simonb	"ps -e" only shows the environment for the processes owned by the current user id or all process if run by root. Fixes PR security/5967 from Todd Vierling.
1.14	15-Oct-1999	jdolecek	When using the procfs for extracting process information, extract also process start time, process arguments and session leadership status. The procfs fallback is also used when kvm_openfiles() completely fails (e.g. when /dev/mem is not readable). Solves PR 7772, though the final implementation is different.
1.13	26-Mar-1999	bgrayson	branches: 1.13.2; 1.13.4; Added experimental fallback /proc-based lookup. Warnings are printed when the fallback method is used, as the results could be untrustworthy if an intruder is present. It is highly likely that NetBSD-1.5 will have an improved kvm interface for reading process information, at which point this code can be garbage-collected. Also added a word to the man page -x option description while I was here.
1.12	06-Feb-1998	mrg	remove old OLD BSD VM code.
1.11	02-Oct-1996	ws	Fix p_nice vs. NZERO code. Remove some unnecessary casts. Remove an unused time format field.
1.10	21-May-1995	mycroft	Split out some helper functions again.
1.9	18-May-1995	mycroft	Create and strvis(3) the argument and environment lists only as needed. Do not keep extra copies around.
1.8	21-Mar-1995	cgd	convert to new RCS id conventions.
1.7	03-Jul-1994	deraadt	devname is in libc now
1.6	16-Jun-1994	pk	Declare devname().
1.5	09-May-1994	cgd	clean up import
1.4	01-Aug-1993	mycroft	Add RCS identifiers.
1.3	23-Mar-1993	cgd	changed "Id" to "Header" for rcsids
1.2	22-Mar-1993	cgd	added rcs ids to all files
1.1	21-Mar-1993	cgd	branches: 1.1.1; Initial revision
1.1.1.2	09-May-1994	cgd	new ps, to match libkvm
1.1.1.1	21-Mar-1993	cgd	initial import of 386bsd-0.1 sources
1.13.4.1	27-Dec-1999	wrstuden	Pull up to last week's -current.
1.13.2.1	08-Nov-1999	cgd	pull up rev 1.14 from trunk (requested by jdolecek): When using the procfs for extracting process information, extract process start time, arguments, and session leadership status. Also, fall back to procfs when kvm_openfiles() completely fails (e.g. when /dev/mem is not readable). Fixes PR#7772.
1.17.2.1	22-Jun-2000	minoura	Sync w/ netbsd-1-5-base.
1.20.2.3	24-Apr-2002	nathanw	Note the presense of multiple LWPs or scheduler activations under "state". Add a "lstate" that prints LWP-specific state and display it instead of "state" under ps -s.
1.20.2.2	23-Apr-2002	nathanw	Add support for handling multi-LWP processes by selecting one LWP as "representative" of the process. Also add a -s option that prints a line for each LWP. While I'm here, remove the /proc fallback code.
1.20.2.1	14-Jul-2001	nathanw	file extern.h was added on branch nathanw_sa on 2002-04-23 20:41:12 +0000
1.30.8.2	23-Mar-2008	matt	sync with HEAD
1.30.8.1	06-Nov-2007	matt	sync with HEAD
1.33.12.1	19-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.33.6.1	22-May-2014	yamt	sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments")
1.34.2.1	10-Aug-2014	tls	Rebase.
1.35.6.1	07-Jan-2017	pgoyette	Sync with HEAD. (Note that most of these changes are simply $NetBSD$ tag issues.)
1.39.4.2	21-Apr-2020	martin	Ooops, restore accidently removed files from merge mishap
1.39.4.1	21-Apr-2020	martin	Sync with HEAD
1.21	12-Dec-2007	lukem	branches: 1.21.70; use __RCSID()
1.20	27-Mar-2004	simonb	branches: 1.20.22; Wrap some long lines. Consisently use (void) in front of printf(...); A few more white-space nits.
1.19	27-Mar-2004	simonb	KNF, ANSFify, de-__P, unC++ify, white space nits.
1.18	14-Feb-2002	enami	branches: 1.18.2; Just use return value of strvis instead of calling strlen.
1.17	14-Feb-2002	enami	Don't define variable as static unnecessarily.
1.16	23-Mar-2001	enami	Always initialize an auto variable.
1.15	20-Mar-2001	itojun	do not update maxlen if realloc fails.
1.14	03-Dec-1999	simonb	Since we have an "extern.h", put all external variable declarations in that file and not sprinkled around various .c files.
1.13	03-Feb-1998	perry	branches: 1.13.6; add <sys/time.h> to fix compiler error
1.12	09-Jan-1998	perry	RCS Id Police.
1.11	20-Jul-1997	christos	Fix compiler warnings Add WARNS=1
1.10	25-May-1995	mycroft	Simplify this just a little.
1.9	21-May-1995	mycroft	Split out some helper functions again.
1.8	18-May-1995	mycroft	Create and strvis(3) the argument and environment lists only as needed. Do not keep extra copies around.
1.7	18-May-1995	mycroft	Do the right thing for an empty environment.
1.6	18-May-1995	mycroft	Avoid an extra (gratuitous) pass through strvis(3).
1.5	21-Mar-1995	cgd	convert to new RCS id conventions.
1.4	08-Jan-1995	mycroft	Better fix for the previous.
1.3	08-Jan-1995	mycroft	Fix oversight in previous change, when argument list is sort of empty.
1.2	18-May-1994	cgd	kill extra space, save my sanity
1.1	09-May-1994	cgd	branches: 1.1.1; Initial revision
1.1.1.2	09-Jan-1997	tls	Import from 4.4BSD-Lite2
1.1.1.1	09-May-1994	cgd	new ps, to match libkvm
1.13.6.1	27-Dec-1999	wrstuden	Pull up to last week's -current.
1.18.2.2	14-Feb-2002	enami	Just use return value of strvis instead of calling strlen.
1.18.2.1	14-Feb-2002	enami	file fmt.c was added on branch nathanw_sa on 2002-02-14 06:57:20 +0000
1.20.22.1	09-Jan-2008	matt	sync with HEAD
1.21.70.2	21-Apr-2020	martin	Ooops, restore accidently removed files from merge mishap
1.21.70.1	21-Apr-2020	martin	Sync with HEAD
1.60	15-Sep-2021	christos	Don't assign v to newvar, so we can still access the original length.
1.59	14-Sep-2021	christos	use emalloc and friends, add ktrace flag printing.
1.58	14-Sep-2021	christos	Provide symbolic printing of some keywords by capitalizing them.
1.57	06-Aug-2019	kamil	Restore maxrss, idrss, isrss, ixrss printing in ps(1) The RSS related statistics are now back in the NetBSD kernel. These values were disabled since day0 until today. libkvm(3) users will still receive inappropriate values as RSS statistics are updated upon sysctl(3) call. Patch submitted by <Krzysztof Lasocki>
1.56	11-Apr-2018	christos	branches: 1.56.2; 1.56.4; use EXIT_FAILURE instead of 1
1.55	09-Dec-2017	kamil	branches: 1.55.2; ps: Rename local routine name from uname to usrname This removes symbol name routine clash with libc's uname(3). This allows to build ps(1) against LLVM Sanitizers. Sponsored by <The NetBSD Foundation>
1.54	15-Jan-2014	mlelstv	Add an LTIME column that prints lwp cputime.
1.53	21-Oct-2009	rmind	branches: 1.53.6; 1.53.12; Remove uarea swap-out functionality: - Addresses the issue described in PR/38828. - Some simplification in threading and sleepq subsystems. - Eliminates pmap_collect() and, as a side note, allows pmap optimisations. - Eliminates XS_CTL_DATA_ONSTACK in scsipi code. - Avoids few scans on LWP list and thus potentially long holds of proc_lock. - Cuts ~1.5k lines of code. Reduces amd64 kernel size by ~4k. - Removes __SWAP_BROKEN cases. Tested on x86, mips, acorn32 (thanks <mpumford>) and partly tested on acorn26 (thanks to <bjh21>). Discussed on <tech-kern>, reviewed by <ad>.
1.52	10-Feb-2008	christos	Add a CPUID keyword; idea and some of the code from Anon Ymous
1.51	01-Sep-2007	yamt	add a keyword "lname", to print l_name.
1.50	29-Oct-2006	christos	branches: 1.50.8; Add support for printing the emulation of the process.
1.49	16-Oct-2006	christos	c99 initializers
1.48	02-Oct-2006	apb	Set the width in the correct data structure. (Fix error in previous.)
1.47	02-Oct-2006	apb	* When all columns are given null customised headers, the blank header line is not printed at all. This is specified in P1003.1-2004 (SUSv3), and is useful. * Customised headers may contain embedded space, commas and equals signs. To specify multiple customised headers, use multiple -o or -O options. This is specified (for "-o", not for "-O") in P1003.1-2004 (SUSv3), and is useful. * When a column is given a null (blank) customised header, it keeps its default minimum width. This is specified in P1003.1-2004 (SUSv3), and seems harmless. * Fix a bug that made it impossible to print the same keyword multiple times, with different customised headers each time. (Previously, the last customised header was used for all instances of the keyword.) * Make the behaviour of "-O" more useful. The first -O option adds the default keywords only if there have not yet been any formatting options, and multiple -O options now insert their keywords in adjacent positions. Now {ps -j -O %cpu} is like {ps -j} with one extra column; Previously, it would have had all the columns implied by "-j", plus all the default columns, plus the extra column specified by "-O". * Convert from home-grown linked lists to SIMPLEQ lists. Discussed in tech-userlevel.
1.46	18-Mar-2006	christos	Coverity CID 1559: Fix memory leak.
1.45	05-Nov-2005	chs	add a keyword for the uarea address. very useful with crashdumps.
1.44	26-Jun-2005	christos	sprinkle a little const, and now everything compiles with WARNS=3
1.43	16-Nov-2004	christos	branches: 1.43.2; print TTY instead of TT, one question mark instead of two and always the full tty name.
1.42	23-Aug-2004	nathanw	Add a "laddr" keyword, analagous to "paddr". Useful for finding struct pcb's.
1.41	28-Jul-2004	simonb	For the "lid" keyword, change ULONG to INT32 since it's a 32bit type. From Nicolas Joly in PR bin/26452.
1.40	27-Mar-2004	simonb	branches: 1.40.2; Add support for the POSIX.2 "args" and "comm" keywords. "args" is just an alias for "command", and "comm" shows just argv[0] and not the whole argument list. Fix for part of PR standards/11224.
1.39	27-Mar-2004	simonb	Add support for the POSIX.2 "etime" keyword - shows the elapsed time since the process was started. Fix a couple of style nits as well. Fix for part of PR standards/11224.
1.38	27-Mar-2004	simonb	Wrap some long lines. Consisently use (void) in front of printf(...); A few more white-space nits.
1.37	27-Mar-2004	simonb	Change the header for the "tty" keyword "TT" instead of "TTY". Fixed POSIX.2 conformance problem mentioned in standards/11225 from Ben Harris.
1.36	16-Dec-2003	mjl	Correct typo in page header for tpgid.
1.35	07-Aug-2003	agc	Move UCB-licensed code from 4-clause to 3-clause licence. Patches provided by Joel Baker in PR 22249, verified by myself.
1.34	08-Mar-2003	dsl	Support -ktt and -ktty, quote "tdev" in comment so table can be sorted.
1.33	08-Mar-2003	christos	XXX: cast tdev to INT32 instead of UINT32 so that that sorting works as before [NODEV entries come first]
1.32	06-Mar-2003	dsl	- add keywords for utime, stime and ctime (output sss.ssssss if small) - fiddle with keyword table - mainly to keep width under 80 cols - add -k keylist so sort output - don't use logs to work out field width, get -MAXINT right - user defined headers can be 1 char (actually they can be zero length) so ?? in tty column isn't guaranteed to be wider than header - remove some long long casts (compiles on sparc64 still) - use kvm_openfiles(NULL, NULL, NULL, KVN_NO_FILES, ..) unless core file specified, (approved by christos)
1.31	03-Mar-2003	dsl	Seems better to display p_sv{u,g}id when asked for it...
1.30	01-Mar-2003	atatat	Add p_svuid and p_svgid to kinfo_proc2. Populate them in the kernel and in libkvm. Then teach ps how to show them to you. Also, teach ps how to show the names for all the uids, the rest of the group numbers, and the "group access list".
1.29	18-Jan-2003	thorpej	Merge the nathanw_sa branch.
1.28	17-Oct-2002	itojun	correct use of format string (signedness, %ldd). PR 18679
1.27	24-Apr-2002	nathanw	branches: 1.27.2; Since kinfo_proc2 has many values that are 64-bit, ps needs to know that they're 64-bit, and grab them out of memory appropriately. Otherwise, big-endian systems get the wrong end of the 64-bit value and lose. Keywords affected: inblk, majflt, minflt, msgrcv, msgsnd, nivcsw, nsigs, nswap, nvcsw, and oublk.
1.26	08-Jan-2001	itojun	branches: 1.26.2; address PR 11653. checked on alpha. XXX supports 32bit and 64bit pointers only
1.25	07-Jun-2000	simonb	branches: 1.25.2; Calculate field widths on the fly so that all columns line up nicely and make more effective use of screen real estate when some columns (eg USER and VSZ) didn't need the full default width.
1.24	02-Jun-2000	simonb	G/C evar() - now that everything is in the one structure it was exactly the same as pvar().
1.23	26-May-2000	simonb	branches: 1.23.2; Use new sysctl/kvm interfaces. This will stop the "proc size mismatch" errors when internal kernel structures change size. Also remove the sgid bit - all live kernel data is accessed through the sysctl interface.
1.22	11-May-2000	mjl	Fix problem in option processing, would segfault when parsing "-O,". Closes PR/10096 by Yuji Yamano using the patch provided.
1.21	03-Dec-1999	simonb	Since we have an "extern.h", put all external variable declarations in that file and not sprinkled around various .c files.
1.20	09-Nov-1999	drochner	Since our gcc doesn't warn about NULL format strings anymore, we can fix the incorrect err(1, "%s", "") et al. Closes PR bin/7592 by cgd.
1.19	03-May-1999	mrg	branches: 1.19.4; limit session to 6 chars. from Geoff Wing <gcw@pobox.com> and fixes his PR#7506
1.18	16-Apr-1999	christos	Add support for printing wide sigset_t properly.
1.17	17-Feb-1998	thorpej	Add a "sid" keyword to print the session ID.
1.16	06-Feb-1998	mrg	remove old OLD BSD VM code.
1.15	20-Jul-1997	christos	Fix compiler warnings Add WARNS=1
1.14	02-Oct-1996	ws	Fix p_nice vs. NZERO code. Remove some unnecessary casts. Remove an unused time format field.
1.13	30-May-1996	cgd	in findvar(), return after warning about unknown keyword so we don't deref. a null pointer.
1.12	29-Sep-1995	cgd	branches: 1.12.6; correct the sizes specified for various variables.
1.11	15-Aug-1995	cgd	Kenneth Stailey pointed out that his previous fix was incorrect. RE and SL should be bounded at 127, not 99.
1.10	14-Aug-1995	cgd	as suggested in PR 1347, by Kenneth Stailey, make "RE" and "SL" fields show up as two digits, max, displaying "99" if > 99. allow any field with an unsigned value to be specified as printing that way (though right now it's only used for RE and SL, which are both unsigned longs). This fix is substantially different than that suggested in the PR.
1.9	08-May-1995	cgd	add a 'holdcnt' keyword and document it.
1.8	21-Mar-1995	cgd	convert to new RCS id conventions.
1.7	09-May-1994	cgd	clean up import
1.6	05-May-1994	cgd	struct element foo
1.5	05-May-1994	cgd	update for changed flags
1.4	01-Aug-1993	mycroft	Add RCS identifiers.
1.3	23-Mar-1993	cgd	changed "Id" to "Header" for rcsids
1.2	22-Mar-1993	cgd	added rcs ids to all files
1.1	21-Mar-1993	cgd	branches: 1.1.1; Initial revision
1.1.1.2	09-May-1994	cgd	new ps, to match libkvm
1.1.1.1	21-Mar-1993	cgd	initial import of 386bsd-0.1 sources
1.12.6.1	30-May-1996	cgd	pull up from trunk: in findvar(), return after warning about unknown keyword so we don't deref. a null pointer.
1.19.4.1	27-Dec-1999	wrstuden	Pull up to last week's -current.
1.23.2.1	22-Jun-2000	minoura	Sync w/ netbsd-1-5-base.
1.25.2.1	18-Oct-2002	itojun	bin/ps 1.28 via patch Correct printf format string.
1.26.2.4	12-Nov-2002	nathanw	Catch up to -current.
1.26.2.3	24-Apr-2002	nathanw	Parallel change to mainline: handle 64-bit values properly.
1.26.2.2	24-Apr-2002	nathanw	Note the presense of multiple LWPs or scheduler activations under "state". Add a "lstate" that prints LWP-specific state and display it instead of "state" under ps -s.
1.26.2.1	23-Apr-2002	nathanw	Add support for handling multi-LWP processes by selecting one LWP as "representative" of the process. Also add a -s option that prints a line for each LWP. While I'm here, remove the /proc fallback code.
1.27.2.1	21-Oct-2002	lukem	Pull up revision 1.28 (requested by itojun in ticket #922): correct use of format string (signedness, %ldd). PR 18679
1.40.2.1	28-Jul-2004	tron	Pull up revision 1.41 (requested by simonb in ticket #723): For the "lid" keyword, change ULONG to INT32 since it's a 32bit type. From Nicolas Joly in PR bin/26452.
1.43.2.1	06-Nov-2005	tron	Pull up following revision(s) (requested by chs in ticket #936): bin/ps/keyword.c: revision 1.45 add a keyword for the uarea address. very useful with crashdumps.
1.50.8.2	23-Mar-2008	matt	sync with HEAD
1.50.8.1	06-Nov-2007	matt	sync with HEAD
1.53.12.1	19-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.53.6.1	22-May-2014	yamt	sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments")
1.55.2.1	16-Apr-2018	pgoyette	Sync with HEAD, resolve some conflicts
1.56.4.1	07-Aug-2019	martin	Pull up following revision(s) (requested by kamil in ticket #24): bin/ps/ps.1: revision 1.110 bin/ps/keyword.c: revision 1.57 Restore maxrss, idrss, isrss, ixrss printing in ps(1) The RSS related statistics are now back in the NetBSD kernel. These values were disabled since day0 until today. libkvm(3) users will still receive inappropriate values as RSS statistics= are updated upon sysctl(3) call. Patch submitted by <Krzysztof Lasocki>
1.56.2.3	21-Apr-2020	martin	Ooops, restore accidently removed files from merge mishap
1.56.2.2	21-Apr-2020	martin	Sync with HEAD
1.56.2.1	13-Apr-2020	martin	Mostly merge changes from HEAD upto 20200411
1.28	26-Aug-2020	simonb	Don't rely on the USPACE kernel define as a fallback if the vm.uspace sysctl fails. We've got bigger problems if the sysctl fail anyway.
1.27	28-Nov-2016	rin	branches: 1.27.14; for donlist{,_sysctl}: - obtain log_ccpu = log(ccpu) rather than ccpu itself - use common default values and warn users appropriately when errors occur ok martin
1.26	28-Apr-2008	martin	branches: 1.26.12; 1.26.46; Remove clause 3 and 4 from TNF licenses
1.25	16-Oct-2006	christos	branches: 1.25.16; c99 initializers
1.24	22-Aug-2004	dsl	Use HW_PHYSMEM64 to avoid problem with > 2GB memory (and >4GB as well) Fixes PR/23717 and PR/24092
1.23	27-Mar-2004	simonb	#define<TAB>
1.22	27-Mar-2004	simonb	KNF, ANSFify, de-__P, unC++ify, white space nits.
1.21	25-Feb-2004	jrf	donlist_sysctl() was overwriting maxslp with vm.uspace. Changed it to use uspace. See PR bin/23713, approved by christos@netbsd.org. Thanks to joff@stchome.com for the submission.
1.20	07-Aug-2003	agc	Move UCB-licensed code from 4-clause to 3-clause licence. Patches provided by Joel Baker in PR 22249, verified by myself.
1.19	18-Jan-2003	thorpej	Merge the nathanw_sa branch.
1.18	14-Jul-2001	matt	branches: 1.18.2; Retrieve maxslp & uspace from kernel instead of using defines. Needed for shared arm code.
1.17	08-Jun-2000	simonb	Fix handling of "ps U<user>" where <user> ended it 't' - now if the first argument doesn't start with a '-' and ends in 't', the 't' only gets converted to a 'T' (for listing processes on the current tty) if it doesn't contain any other command line option characters that take an argument. Problem noticed by ITOH Yasufumi on tech-userlevel. If the 'start' format was the last column, the width wouldn't be set and started() output a zero length string instead of a string the right length - fix header width calculations so the the last column is handled the same all others. This only showed up for 'start' because started() knew that the column header is the same width and the field itself... Update copyrights.
1.16	26-May-2000	simonb	branches: 1.16.2; Use new sysctl/kvm interfaces. This will stop the "proc size mismatch" errors when internal kernel structures change size. Also remove the sgid bit - all live kernel data is accessed through the sysctl interface.
1.15	03-Dec-1999	simonb	Since we have an "extern.h", put all external variable declarations in that file and not sprinkled around various .c files.
1.14	27-Mar-1998	is	branches: 1.14.6; Use the physmem variable to get at the physical memory size (instead of the avail_end - avail_start difference which is only correct on machines with contiguous memory).
1.13	06-Feb-1998	mrg	remove old OLD BSD VM code.
1.12	20-Jul-1997	christos	Fix compiler warnings Add WARNS=1
1.11	21-Mar-1995	cgd	convert to new RCS id conventions.
1.10	04-Dec-1994	cgd	from James Jegers <jimj@miller.cs.uwm.edu>: quiet -Wall, and squelch some of the worst style errors.
1.9	25-Nov-1994	mycroft	Format police.
1.8	25-Nov-1994	deraadt	print %MEM correctly
1.7	09-May-1994	cgd	clean up import
1.6	05-May-1994	cgd	update for changed flags
1.5	01-Aug-1993	mycroft	Add RCS identifiers.
1.4	23-Mar-1993	cgd	changed "Id" to "Header" for rcsids
1.3	22-Mar-1993	cgd	added rcs ids to all files
1.2	21-Mar-1993	cgd	after 0.2.2 "stable" patches applied
1.1	21-Mar-1993	cgd	branches: 1.1.1; Initial revision
1.1.1.2	09-May-1994	cgd	new ps, to match libkvm
1.1.1.1	21-Mar-1993	cgd	initial import of 386bsd-0.1 sources
1.14.6.1	27-Dec-1999	wrstuden	Pull up to last week's -current.
1.16.2.1	22-Jun-2000	minoura	Sync w/ netbsd-1-5-base.
1.18.2.2	23-Apr-2002	nathanw	Add support for handling multi-LWP processes by selecting one LWP as "representative" of the process. Also add a -s option that prints a line for each LWP. While I'm here, remove the /proc fallback code.
1.18.2.1	14-Jul-2001	nathanw	file nlist.c was added on branch nathanw_sa on 2002-04-23 20:41:12 +0000
1.25.16.1	18-May-2008	yamt	sync with head.
1.26.46.1	07-Jan-2017	pgoyette	Sync with HEAD. (Note that most of these changes are simply $NetBSD$ tag issues.)
1.26.12.1	27-Dec-2011	matt	Use UPAGES in preferences to USPACE.
1.27.14.2	21-Apr-2020	martin	Ooops, restore accidently removed files from merge mishap
1.27.14.1	21-Apr-2020	martin	Sync with HEAD
1.138	26-Jan-2022	andvar	remove double t from targeted, add missing r to arbitrary And fix few more typos along the way in comments and man pages.
1.137	14-Sep-2021	christos	use emalloc and friends, add ktrace flag printing.
1.136	14-Sep-2021	christos	Provide symbolic printing of some keywords by capitalizing them.
1.135	17-Apr-2021	maya	Remove SCCS workaround. No binary change.
1.134	06-Apr-2021	christos	- dedup code - add a safe_strftime() to handle error cases
1.133	06-Apr-2021	simonb	Fix the column width calculation for the lstart column if an empty column header is specified. Fixes bug pointed out by Ted Spradley in https://mail-index.netbsd.org/netbsd-users/2021/04/05/msg026808.html .
1.132	19-Jun-2019	kamil	branches: 1.132.2; Add a fallback definition of LSDEAD in ps(1) The symbol is no longer available in headers. Requested by <mrg>
1.131	18-Jun-2019	kamil	Make LSDEAD usage conditional LSDEAD is not used since NetBSD-5.0 and will be gone. The same conditional usage is already in ps.c in the same program.
1.130	19-Sep-2018	maxv	Don't display l_wchan, either there is something in l_wmesg and we display it, or there's nothing and we print "-".
1.129	11-Apr-2018	christos	branches: 1.129.2; use EXIT_FAILURE instead of 1
1.128	09-Dec-2017	kamil	branches: 1.128.2; ps: Rename local routine name from uname to usrname This removes symbol name routine clash with libc's uname(3). This allows to build ps(1) against LLVM Sanitizers. Sponsored by <The NetBSD Foundation>
1.127	12-Dec-2016	christos	branches: 1.127.6; Handle functions that use the offset from either kinfo_proc2/kinfo_lwp properly.
1.126	02-Dec-2016	christos	provide a tree like display with -d, from FreeBSD
1.125	28-Nov-2016	rin	Calculate CPU usage (pcpu) once per process if it is required. This change significantly improves performance for slow machines when output is sorted by pcpu. ok martin
1.124	28-Nov-2016	rin	for donlist{,_sysctl}: - obtain log_ccpu = log(ccpu) rather than ccpu itself - use common default values and warn users appropriately when errors occur ok martin
1.123	15-Nov-2014	joerg	branches: 1.123.2; Use l_wmesg if the string is not empty. Don't bother checking l_name for nullness.
1.122	20-Apr-2014	dholland	branches: 1.122.2; Use an enum type for PRINTMODE vs. WIDTHMODE. Compiler output diffs have been checked.
1.121	15-Jan-2014	mlelstv	branches: 1.121.2; Add an LTIME column that prints lwp cputime.
1.120	20-Mar-2012	matt	branches: 1.120.2; Use C89 function definitions
1.119	13-Feb-2012	wiz	Remove unused variable. From cppcheck via Henning Petersen in PR 46002.
1.118	13-Jun-2011	dholland	branches: 1.118.2; When converting from pages to kilobytes, cast the return value of getpagesize() to size_t. For some reason getpagesize() is defined to return int, and several of the page counts we get come back from the kernel as int32_t; in LP64 without the cast the byte count will be computed in a 32-bit value and for large processes will overflow and become negative... and then remain negative when divided by 1024 to convert to kilobytes. Fixes a problem I hit the other day where I saw negative RSS, which turns out also to be PR 40642. Note: other logic in here will break down when we first get >2TB processes... and int32 page counts will break on >8TB processes. But hopefully we won't see any of that for a few years yet.
1.117	22-Jan-2011	christos	branches: 1.117.2; fix previous.
1.116	22-Jan-2011	christos	Make printing of lwp flags similar to the process one, identifying (O)nproc (K)ernel threads and scheduler (a)ctivations.
1.115	28-Jul-2010	njoly	branches: 1.115.2; Do not check pcpu value against 100.0 but rather 99.95, to properly deal with value rounding. From apb@.
1.114	27-Jul-2010	njoly	Make %cpu drop the decimal part when reaching 100%, to stay in the 5 expected columns.
1.113	31-May-2010	rmind	Fix ps(1) and top(1) to show reasonable CPU numbers i.e. cpu_index() provided by the kernel, instead of CPU order number, which is generally random.
1.112	21-Oct-2009	rmind	Remove uarea swap-out functionality: - Addresses the issue described in PR/38828. - Some simplification in threading and sleepq subsystems. - Eliminates pmap_collect() and, as a side note, allows pmap optimisations. - Eliminates XS_CTL_DATA_ONSTACK in scsipi code. - Avoids few scans on LWP list and thus potentially long holds of proc_lock. - Cuts ~1.5k lines of code. Reduces amd64 kernel size by ~4k. - Removes __SWAP_BROKEN cases. Tested on x86, mips, acorn32 (thanks <mpumford>) and partly tested on acorn26 (thanks to <bjh21>). Discussed on <tech-kern>, reviewed by <ad>.
1.111	29-Mar-2009	mrg	- add new RLIMIT_AS (aka RLIMIT_VMEM) resource that limits the total address space available to processes. this limit exists in most other modern unix variants, and like most of them, our defaults are unlimited. remove the old mmap / rlimit.datasize hack. - adds the VMCMD_STACK flag to all the stack-creation vmcmd callers. it is currently unused, but was added a few years ago. - add a pair of new process size values to kinfo_proc2{}. one is the total size of the process memory map, and the other is the total size adjusted for unused stack space (since most processes have a lot of this...) - patch sh, and csh to notice RLIMIT_AS. (in some cases, the alias RLIMIT_VMEM was already present and used if availble.) - patch ps, top and systat to notice the new k_vm_vsize member of kinfo_proc2{}. - update irix, svr4, svr4_32, linux and osf1 emulations to support this information. (freebsd could be done, but that it's best left as part of the full-update of compat/freebsd.) this addresses PR 7897. it also gives correct memory usage values, which have never been entirely correct (since mmap), and have been very incorrect since jemalloc() was enabled. tested on i386 and sparc64, build tested on several other platforms. thanks to many folks for feedback and testing but most espcially chuq and yamt for critical suggestions that lead to this patch not having a special ugliness i wasn't happy with anyway :-)
1.110	14-Feb-2009	lukem	fix -Wsign-compare issues
1.109	03-Feb-2009	drochner	branches: 1.109.2; make sure the table stays aligned even if no groups are to be displayed with the "groupnames" option
1.108	03-Feb-2009	drochner	make sure the table stays aligned even if no groups are to be displayed with the "groups" option
1.107	28-Dec-2008	christos	fix dev_t 64 bit issues.
1.106	19-Oct-2008	christos	branches: 1.106.2; Use 'O' for LSONPROC like solaris instead of bundling LSIDL, LSRUN, LSONPROC to 'R'
1.105	28-Apr-2008	martin	Remove clause 3 and 4 from TNF licenses
1.104	10-Feb-2008	christos	branches: 1.104.4; Add a CPUID keyword; idea and some of the code from Anon Ymous
1.103	31-Dec-2007	ad	Remove systrace. Ok core@.
1.102	06-Nov-2007	ad	Kill another use of PZERO.
1.101	01-Sep-2007	yamt	add a keyword "lname", to print l_name.
1.100	28-Jul-2007	dsl	branches: 1.100.4; 1.100.6; Don't call P_ZOMBIE(struct kinfo_proc2), it's p_stat field contains lwp states, not process states! Since the times are filled with zeros for zombie processes the check before assuming teh process time is zero is moot - delete it. Fix the other chact to test the p_realstat. Fixer PR kern/36295
1.99	17-Feb-2007	pavel	Revert the changes done after newlock2 merge, except for the removal of the now unused LSDEAD state. The current kernel headers are now source-compatible with pre-newlock2 kernel headers again. Approved by Andrew Doran.
1.98	10-Feb-2007	ad	Further changes to use compat process flags mapped by sysctl. To be revisited soon.
1.97	09-Feb-2007	ad	Sync with kernel changes introduced by merging the newlock2 branch.
1.96	29-Oct-2006	christos	branches: 1.96.2; 1.96.4; Add support for printing the emulation of the process.
1.95	02-Oct-2006	apb	* When all columns are given null customised headers, the blank header line is not printed at all. This is specified in P1003.1-2004 (SUSv3), and is useful. * Customised headers may contain embedded space, commas and equals signs. To specify multiple customised headers, use multiple -o or -O options. This is specified (for "-o", not for "-O") in P1003.1-2004 (SUSv3), and is useful. * When a column is given a null (blank) customised header, it keeps its default minimum width. This is specified in P1003.1-2004 (SUSv3), and seems harmless. * Fix a bug that made it impossible to print the same keyword multiple times, with different customised headers each time. (Previously, the last customised header was used for all instances of the keyword.) * Make the behaviour of "-O" more useful. The first -O option adds the default keywords only if there have not yet been any formatting options, and multiple -O options now insert their keywords in adjacent positions. Now {ps -j -O %cpu} is like {ps -j} with one extra column; Previously, it would have had all the columns implied by "-j", plus all the default columns, plus the extra column specified by "-O". * Convert from home-grown linked lists to SIMPLEQ lists. Discussed in tech-userlevel.
1.94	27-Jun-2005	christos	Add some more const so that this compiles again.
1.93	26-Jun-2005	christos	sprinkle a little const, and now everything compiles with WARNS=3
1.92	07-Jun-2005	he	Appease -Wuninitialized by initializing val and uval to 0. Marked with XXXGCC for hpcarm (found while building for it). Reviewed (in a slightly different form) by lukem.
1.91	16-Nov-2004	christos	print TTY instead of TT, one question mark instead of two and always the full tty name.
1.90	23-Apr-2004	simonb	s/the the/the/ (only in sources that aren't regularly imported from elsewhere).
1.89	27-Mar-2004	simonb	Gah, fix uninitialised variable with the "etime" change. _Never_ be happy with something and then edit a single line before committing without retesting...
1.88	27-Mar-2004	simonb	Add support for the POSIX.2 "args" and "comm" keywords. "args" is just an alias for "command", and "comm" shows just argv[0] and not the whole argument list. Fix for part of PR standards/11224.
1.87	27-Mar-2004	simonb	Add support for the POSIX.2 "etime" keyword - shows the elapsed time since the process was started. Fix a couple of style nits as well. Fix for part of PR standards/11224.
1.86	27-Mar-2004	simonb	#define<TAB>
1.85	27-Mar-2004	simonb	Use some constants from <tzfile.h>.
1.84	27-Mar-2004	simonb	Wrap some long lines. Consisently use (void) in front of printf(...); A few more white-space nits.
1.83	27-Mar-2004	simonb	Fix grammar in a comment.
1.82	27-Mar-2004	simonb	KNF, ANSFify, de-__P, unC++ify, white space nits.
1.81	24-Feb-2004	wiz	Spell interrupt with two rs. From Peter Postma.
1.80	11-Jan-2004	jdolecek	g/c SDEAD
1.79	07-Aug-2003	agc	Move UCB-licensed code from 4-clause to 3-clause licence. Patches provided by Joel Baker in PR 22249, verified by myself.
1.78	06-Mar-2003	dsl	- add keywords for utime, stime and ctime (output sss.ssssss if small) - fiddle with keyword table - mainly to keep width under 80 cols - add -k keylist so sort output - don't use logs to work out field width, get -MAXINT right - user defined headers can be 1 char (actually they can be zero length) so ?? in tty column isn't guaranteed to be wider than header - remove some long long casts (compiles on sparc64 still) - use kvm_openfiles(NULL, NULL, NULL, KVN_NO_FILES, ..) unless core file specified, (approved by christos)
1.77	01-Mar-2003	atatat	Add p_svuid and p_svgid to kinfo_proc2. Populate them in the kernel and in libkvm. Then teach ps how to show them to you. Also, teach ps how to show the names for all the uids, the rest of the group numbers, and the "group access list".
1.76	18-Jan-2003	thorpej	Merge the nathanw_sa branch.
1.75	06-Jan-2003	wiz	interrupt with two rs.
1.74	19-Jun-2002	jdolecek	g/c procfs fallback code, it's redundant now that we use sysctl to get process info
1.73	17-Jun-2002	christos	Document some missing flags and add systrace(1) 'x' flag.
1.72	24-Apr-2002	nathanw	Since kinfo_proc2 has many values that are 64-bit, ps needs to know that they're 64-bit, and grab them out of memory appropriately. Otherwise, big-endian systems get the wrong end of the 64-bit value and lose. Keywords affected: inblk, majflt, minflt, msgrcv, msgsnd, nivcsw, nsigs, nswap, nvcsw, and oublk.
1.71	21-Feb-2002	martin	branches: 1.71.2; Use int32_t for temporary variables (instead of long), that is the same type as we get the data passed from the kernel. This avoids (missing) sign extension bugs on LP64 systems and partly takes care of PR 15677. We now print this values as negative seconds - still wrong, but that probably is due to the simple way this values are acumulated in the scheduler, causing negative times when ntpd steps time backwards.
1.70	21-Jan-2002	jdolecek	started(): don't assume that the field width is correct and recompute it as needed This fixes bogus output for cases like `ps -ao start=xx`, as reported by Martin Macok of Undeground.cz on current-users@netbsd.org.
1.69	24-Aug-2001	lukem	fix comment: "[]" are [square] brackets, "<>" are angle brackets
1.68	24-Aug-2001	enami	Print commands within angled brackets only if they are system processes. Print other commands, like cc, cpp and as, within parentheres.
1.67	07-Aug-2001	christos	Print system processes/kernel threads as [kprocname] as top(1) does.
1.66	14-Jul-2001	matt	Retrieve maxslp & uspace from kernel instead of using defines. Needed for shared arm code.
1.65	15-Jan-2001	christos	clarify things a bit more (from hubertf)
1.64	15-Jan-2001	christos	Really explain what parenthesized names mean and why we parenthesize names!
1.63	15-Jan-2001	hubertf	Document the meaning of commands shown in parantheses. Patches submitted by Jeremy C. Reed <reed@reedmedia.net> in PR 11930.
1.62	09-Jan-2001	itojun	KPTR/KPTR24 are using u_int64_t. commented by minoura
1.61	08-Jan-2001	itojun	redo previous (simplify KPTR)
1.60	08-Jan-2001	itojun	backout previous; did not compile on non-alpha
1.59	08-Jan-2001	itojun	simplify KPTR processing.
1.58	08-Jan-2001	itojun	address PR 11653. checked on alpha. XXX supports 32bit and 64bit pointers only
1.57	23-Oct-2000	simonb	Add a K flag to the state information - K is for kernel thread or system process (ie, P_SYSTEM set in p_flag). The L flag (locked in core) is only used for non-P_SYSTEM processes.
1.56	29-Jun-2000	mrg	remove include of <vm/vm.h>
1.55	08-Jun-2000	simonb	branches: 1.55.2; Fix handling of "ps U<user>" where <user> ended it 't' - now if the first argument doesn't start with a '-' and ends in 't', the 't' only gets converted to a 'T' (for listing processes on the current tty) if it doesn't contain any other command line option characters that take an argument. Problem noticed by ITOH Yasufumi on tech-userlevel. If the 'start' format was the last column, the width wouldn't be set and started() output a zero length string instead of a string the right length - fix header width calculations so the the last column is handled the same all others. This only showed up for 'start' because started() knew that the column header is the same width and the field itself... Update copyrights.
1.54	08-Jun-2000	simonb	Fix back-to-front assignment in tname() which meant that the column width would never autosize past the header ("TT") width. Problem noticed by Geoff Wing.
1.53	07-Jun-2000	simonb	Calculate field widths on the fly so that all columns line up nicely and make more effective use of screen real estate when some columns (eg USER and VSZ) didn't need the full default width.
1.52	02-Jun-2000	simonb	G/C evar() - now that everything is in the one structure it was exactly the same as pvar().
1.51	26-May-2000	simonb	branches: 1.51.2; Use new sysctl/kvm interfaces. This will stop the "proc size mismatch" errors when internal kernel structures change size. Also remove the sgid bit - all live kernel data is accessed through the sysctl interface.
1.50	26-May-2000	thorpej	Handle SONPROC state.
1.49	05-Dec-1999	fredb	Fix CL* purge fallout.
1.48	03-Dec-1999	simonb	Since we have an "extern.h", put all external variable declarations in that file and not sprinkled around various .c files.
1.47	03-Dec-1999	simonb	"ps -e" only shows the environment for the processes owned by the current user id or all process if run by root. Fixes PR security/5967 from Todd Vierling.
1.46	15-Oct-1999	jdolecek	command(): don't start using procfs_getargv() instead of kvm_getargv() just because the latter returned a NULL - that may normally happen, when the process is, for example, a kernel thread procfs_getargv(): if the name is brackened in '(' and ')', just return NULL immediately - the code in command() will DTRT and the output will be same for procfs- and kvm- based lookup in all cases
1.45	15-Oct-1999	jdolecek	When using the procfs for extracting process information, extract also process start time, process arguments and session leadership status. The procfs fallback is also used when kvm_openfiles() completely fails (e.g. when /dev/mem is not readable). Solves PR 7772, though the final implementation is different.
1.44	11-Oct-1999	mrg	skip "dty" just like we skip "tty", otherwise we just get "dt" in ps output for all dty's
1.43	23-Jul-1999	veego	branches: 1.43.2; According to the previous commit the new process state should be SDEAD and not SDYING, so s/SDYING/SDEAD/.
1.42	22-Jul-1999	thorpej	Update for SDEAD.
1.41	03-May-1999	mrg	limit session to 6 chars. from Geoff Wing <gcw@pobox.com> and fixes his PR#7506
1.40	16-Apr-1999	christos	Add support for printing wide sigset_t properly.
1.39	28-Jul-1998	mycroft	branches: 1.39.2; Look for the formats used by setproctitle(3) and login shells, and avoiding outputting the redundant `(comm)'.
1.38	27-Jul-1998	mycroft	__AUDIT__ cleanup.
1.37	01-Apr-1998	kleink	Need <time.h> for localtime(), time() and strftime() prototypes.
1.36	06-Feb-1998	mrg	remove old OLD BSD VM code.
1.35	05-Feb-1998	gwr	Begone KERNBASE! (Just print kernel pointers as-is.)
1.34	03-Aug-1997	mikel	use %c not %C for lstart; from tetsuya@secom-sis.co.jp via OpenBSD
1.33	20-Jul-1997	christos	Fix compiler warnings Add WARNS=1
1.32	19-Mar-1997	mycroft	DTRT if e_wmesg is not NUL-terminated.
1.31	19-Mar-1997	mycroft	DTRT if e_login is not NUL-terminated.
1.30	02-Oct-1996	ws	Fix p_nice vs. NZERO code. Remove some unnecessary casts. Remove an unused time format field.
1.29	15-Aug-1996	explorer	return 0.0 cpu usage for zombies. closes pr bin/2693. Perhaps this should be fixed in exit, so p->p_pctcpu is cleared when the process exits.
1.28	13-Jul-1996	explorer	include <pwd.h> for one function (user_from_uid) and correct one %d -> %ld in a format string. (yes, trying to find the problem with ps wwwwwwwww1 and core dump, and might as well clean up while here)
1.27	29-Sep-1995	cgd	add code to convert from INT32 and UINT32 to native types.
1.26	15-Aug-1995	cgd	Kenneth Stailey pointed out that his previous fix was incorrect. RE and SL should be bounded at 127, not 99.
1.25	14-Aug-1995	cgd	as suggested in PR 1347, by Kenneth Stailey, make "RE" and "SL" fields show up as two digits, max, displaying "99" if > 99. allow any field with an unsigned value to be specified as printing that way (though right now it's only used for RE and SL, which are both unsigned longs). This fix is substantially different than that suggested in the PR.
1.24	07-Jun-1995	cgd	typeof(timeval.ts_sec) != time_t
1.23	25-May-1995	mycroft	If there is another field after the command, fill in the command field with blanks.
1.22	21-May-1995	mycroft	Split out some helper functions again.
1.21	18-May-1995	mycroft	Create and strvis(3) the argument and environment lists only as needed. Do not keep extra copies around.
1.20	18-May-1995	mycroft	Avoid an extra (gratuitous) pass through strvis(3).
1.19	08-May-1995	cgd	add the ability to understand and print INT and UINT-sized variables.
1.18	21-Mar-1995	cgd	convert to new RCS id conventions.
1.17	23-Dec-1994	cgd	be careful with addresses.
1.16	04-Dec-1994	cgd	from James Jegers <jimj@miller.cs.uwm.edu>: quiet -Wall, and squelch some of the worst style errors.
1.15	03-Nov-1994	deraadt	kill UPAGES
1.14	15-Sep-1994	deraadt	NBPG -> getpagesize()
1.13	16-Jun-1994	pk	No more P_NOSWAP/P_PHYSIO.
1.12	09-May-1994	cgd	clean up import
1.11	05-May-1994	cgd	struct element foo
1.10	05-May-1994	cgd	update for changed flags
1.9	14-Aug-1993	mycroft	Fix test for zombie process.
1.8	01-Aug-1993	mycroft	Add RCS identifiers.
1.7	18-Jun-1993	cgd	use strvis on the arguments and environment, so we don't end up in sed and/or xterm-title-changing hell.
1.6	02-Jun-1993	cgd	make ps do something more sensible with zombie processes
1.5	01-Jun-1993	cgd	fix more-or-less-uninitialized variable...
1.4	01-Jun-1993	cgd	add support and documentation for the 'e' option, to print out the process environment.
1.3	23-Mar-1993	cgd	changed "Id" to "Header" for rcsids
1.2	22-Mar-1993	cgd	added rcs ids to all files
1.1	21-Mar-1993	cgd	branches: 1.1.1; Initial revision
1.1.1.2	09-May-1994	cgd	new ps, to match libkvm
1.1.1.1	21-Mar-1993	cgd	initial import of 386bsd-0.1 sources
1.39.2.2	08-Nov-1999	cgd	pull up revs 1.45-1.46 from trunk (requested by jdolecek): When using the procfs for extracting process information, extract process start time, arguments, and session leadership status. Also, fall back to procfs when kvm_openfiles() completely fails (e.g. when /dev/mem is not readable). Fixes PR#7772.
1.39.2.1	12-Oct-1999	he	Pull up revision 1.44 (requested by mrg): Make various utilities skip "dty" as well as "tty" on terminals, so that the actually used tty is visiable instead of just 'dt'.
1.43.2.1	27-Dec-1999	wrstuden	Pull up to last week's -current.
1.51.2.1	22-Jun-2000	minoura	Sync w/ netbsd-1-5-base.
1.55.2.1	27-Jan-2001	jhawk	Pull up revisions 1.63-1.65 (requested by hubertf): Clarify meaning of COMMANDs printed in parentheses. Addresses PR11930.
1.71.2.7	17-Jan-2003	thorpej	Sync with HEAD.
1.71.2.6	12-Nov-2002	nathanw	Catch up to -current.
1.71.2.5	26-Jul-2002	nathanw	Print state letter 'U' for suspended LWPs. Make sure to print '+' (controlling terminal) character last.
1.71.2.4	24-Apr-2002	nathanw	Parallel change to mainline: handle 64-bit values properly.
1.71.2.3	24-Apr-2002	nathanw	Note the presense of multiple LWPs or scheduler activations under "state". Add a "lstate" that prints LWP-specific state and display it instead of "state" under ps -s.
1.71.2.2	23-Apr-2002	nathanw	Add support for handling multi-LWP processes by selecting one LWP as "representative" of the process. Also add a -s option that prints a line for each LWP. While I'm here, remove the /proc fallback code.
1.71.2.1	21-Feb-2002	nathanw	file print.c was added on branch nathanw_sa on 2002-04-23 20:41:12 +0000
1.96.4.1	03-Sep-2007	wrstuden	Sync w/ NetBSD-4-RC_1
1.96.2.1	30-Jul-2007	liamjfoy	Pull up following revision(s) (requested by dsl in ticket #798): bin/ps/print.c: revision 1.100 Don't call P_ZOMBIE(struct kinfo_proc2), it's p_stat field contains lwp states, not process states! Since the times are filled with zeros for zombie processes the check before assuming teh process time is zero is moot - delete it. Fix the other chact to test the p_realstat. Fixer PR kern/36295
1.100.6.2	28-Jul-2007	dsl	Don't call P_ZOMBIE(struct kinfo_proc2), it's p_stat field contains lwp states, not process states! Since the times are filled with zeros for zombie processes the check before assuming teh process time is zero is moot - delete it. Fix the other chact to test the p_realstat. Fixer PR kern/36295
1.100.6.1	28-Jul-2007	dsl	file print.c was added on branch matt-mips64 on 2007-07-28 17:05:51 +0000
1.100.4.3	23-Mar-2008	matt	sync with HEAD
1.100.4.2	09-Jan-2008	matt	sync with HEAD
1.100.4.1	06-Nov-2007	matt	sync with HEAD
1.104.4.1	18-May-2008	yamt	sync with head.
1.106.2.1	01-Apr-2009	snj	Pull up following revision(s) (requested by mrg in ticket #622): bin/csh/csh.1: revision 1.46 bin/csh/func.c: revision 1.37 bin/ps/print.c: revision 1.111 bin/ps/ps.c: revision 1.74 bin/sh/miscbltin.c: revision 1.38 bin/sh/sh.1: revision 1.92 via patch external/bsd/top/dist/machine/m_netbsd.c: revision 1.7 lib/libkvm/kvm_proc.c: revision 1.82 sys/arch/mips/mips/cpu_exec.c: revision 1.55 sys/compat/darwin/darwin_exec.c: revision 1.57 sys/compat/ibcs2/ibcs2_exec.c: revision 1.73 sys/compat/irix/irix_resource.c: revision 1.15 sys/compat/linux/arch/amd64/linux_exec_machdep.c: revision 1.16 sys/compat/linux/arch/i386/linux_exec_machdep.c: revision 1.12 sys/compat/linux/common/linux_limit.h: revision 1.5 sys/compat/osf1/osf1_resource.c: revision 1.14 sys/compat/svr4/svr4_resource.c: revision 1.18 sys/compat/svr4_32/svr4_32_resource.c: revision 1.17 sys/kern/exec_subr.c: revision 1.62 sys/kern/init_sysctl.c: revision 1.160 sys/kern/kern_exec.c: revision 1.288 sys/kern/kern_resource.c: revision 1.151 sys/sys/param.h: patch sys/sys/resource.h: revision 1.31 sys/sys/sysctl.h: revision 1.184 sys/uvm/uvm_extern.h: revision 1.153 sys/uvm/uvm_glue.c: revision 1.136 sys/uvm/uvm_mmap.c: revision 1.128 usr.bin/systat/ps.c: revision 1.32 - - add new RLIMIT_AS (aka RLIMIT_VMEM) resource that limits the total address space available to processes. this limit exists in most other modern unix variants, and like most of them, our defaults are unlimited. remove the old mmap / rlimit.datasize hack. - - adds the VMCMD_STACK flag to all the stack-creation vmcmd callers. it is currently unused, but was added a few years ago. - - add a pair of new process size values to kinfo_proc2{}. one is the total size of the process memory map, and the other is the total size adjusted for unused stack space (since most processes have a lot of this...) - - patch sh, and csh to notice RLIMIT_AS. (in some cases, the alias RLIMIT_VMEM was already present and used if availble.) - - patch ps, top and systat to notice the new k_vm_vsize member of kinfo_proc2{}. - - update irix, svr4, svr4_32, linux and osf1 emulations to support this information. (freebsd could be done, but that it's best left as part of the full-update of compat/freebsd.) this addresses PR 7897. it also gives correct memory usage values, which have never been entirely correct (since mmap), and have been very incorrect since jemalloc() was enabled. tested on i386 and sparc64, build tested on several other platforms. thanks to many folks for feedback and testing but most espcially chuq and yamt for critical suggestions that lead to this patch not having a special ugliness i wasn't happy with anyway :-)
1.109.2.1	13-May-2009	jym	Sync with HEAD. Third (and last) commit. See http://mail-index.netbsd.org/source-changes/2009/05/13/msg221222.html
1.115.2.1	08-Feb-2011	bouyer	Sync with HEAD
1.117.2.1	23-Jun-2011	cherry	Catchup with rmind-uvmplock merge.
1.118.2.2	22-May-2014	yamt	sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments")
1.118.2.1	17-Apr-2012	yamt	sync with head
1.120.2.1	19-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.121.2.1	10-Aug-2014	tls	Rebase.
1.122.2.1	14-May-2015	snj	Pull up following revision(s) (requested by joerg in ticket #758): bin/ksh/Makefile: revision 1.31 bin/ps/print.c: revision 1.123 external/bsd/iscsi/dist/src/lib/parameters.c: revision 1.4 external/bsd/iscsi/dist/src/lib/target.c: revision 1.9 external/gpl2/lvm2/dist/lib/commands/toolcontext.c: revision 1.8 external/gpl2/lvm2/dist/lib/format1/import-export.c: revision 1.2 gnu/dist/texinfo/makeinfo/xml.c: revision 1.2 sbin/bioctl/bioctl.c: revision 1.16 usr.sbin/isdn/isdnd/msghdl.c: revision 1.12 Drop pointer checks that are always true. -- Comment out impossible code. -- Remove tautologic check. -- Skip vendor if the string is empty. Use l_wmesg if the string is not empty. Don't bother checking l_name for nullness. -- Array can't be null. -- Show display if it is not empty. -- Make cast warnings for clang non-fatal.
1.123.2.1	07-Jan-2017	pgoyette	Sync with HEAD. (Note that most of these changes are simply $NetBSD$ tag issues.)
1.127.6.1	06-Apr-2021	martin	Pull up following revision(s) (requested by simonb in ticket #1669): bin/ps/print.c: revision 1.133 Fix the column width calculation for the lstart column if an empty column header is specified. Fixes bug pointed out by Ted Spradley in https://mail-index.netbsd.org/netbsd-users/2021/04/05/msg026808.html .
1.128.2.2	30-Sep-2018	pgoyette	Ssync with HEAD
1.128.2.1	16-Apr-2018	pgoyette	Sync with HEAD, resolve some conflicts
1.129.2.4	21-Apr-2020	martin	Ooops, restore accidently removed files from merge mishap
1.129.2.3	21-Apr-2020	martin	Sync with HEAD
1.129.2.2	13-Apr-2020	martin	Mostly merge changes from HEAD upto 20200411
1.129.2.1	10-Jun-2019	christos	Sync with HEAD
1.132.2.1	06-Apr-2021	martin	Pull up following revision(s) (requested by simonb in ticket #1244): bin/ps/print.c: revision 1.133 Fix the column width calculation for the lstart column if an empty column header is specified. Fixes bug pointed out by Ted Spradley in https://mail-index.netbsd.org/netbsd-users/2021/04/05/msg026808.html .
1.10	19-Jun-2002	jdolecek	g/c procfs fallback code, it's redundant now that we use sysctl to get process info
1.9	26-May-2000	simonb	branches: 1.9.6; Use new sysctl/kvm interfaces. This will stop the "proc size mismatch" errors when internal kernel structures change size. Also remove the sgid bit - all live kernel data is accessed through the sysctl interface.
1.8	07-Apr-2000	jdolecek	Ignore also "self" link when searching for proc info. Patch sent by NAKAJIMA Yoshihiro in bin/9819
1.7	15-Oct-1999	jdolecek	command(): don't start using procfs_getargv() instead of kvm_getargv() just because the latter returned a NULL - that may normally happen, when the process is, for example, a kernel thread procfs_getargv(): if the name is brackened in '(' and ')', just return NULL immediately - the code in command() will DTRT and the output will be same for procfs- and kvm- based lookup in all cases
1.6	15-Oct-1999	jdolecek	When using the procfs for extracting process information, extract also process start time, process arguments and session leadership status. The procfs fallback is also used when kvm_openfiles() completely fails (e.g. when /dev/mem is not readable). Solves PR 7772, though the final implementation is different.
1.5	09-May-1999	thorpej	branches: 1.5.2; KNF.
1.4	28-Mar-1999	bgrayson	branches: 1.4.2; - Be really paranoid. Any time we open a file that is in /proc, run fstatfs() on the open file to verify that no intruder has mounted something on portions of /proc. This will catch, for instance, "mount_null /tmp /proc/1378". We already do 5 syscalls per process, so one more won't hurt :) ... and safety is better than performance when ps is otherwise broken. - Also added a few close()'s at early returns, to avoid chewing up fd's.
1.3	27-Mar-1999	bgrayson	Minor fixes: 1. Use statfs() to verify that /proc is a procfs. 2. Add -K option to disable /proc-based method. 3. Make warnings less verbose, but still accurate.
1.2	27-Mar-1999	tron	Add missing prototype so that this actually compiles.
1.1	26-Mar-1999	bgrayson	Added experimental fallback /proc-based lookup. Warnings are printed when the fallback method is used, as the results could be untrustworthy if an intruder is present. It is highly likely that NetBSD-1.5 will have an improved kvm interface for reading process information, at which point this code can be garbage-collected. Also added a word to the man page -x option description while I was here.
1.4.2.1	08-Nov-1999	cgd	pull up revs 1.5-1.7 from trunk (requested by jdolecek): When using the procfs for extracting process information, extract process start time, arguments, and session leadership status. Also, fall back to procfs when kvm_openfiles() completely fails (e.g. when /dev/mem is not readable). Fixes PR#7772.
1.5.2.1	27-Dec-1999	wrstuden	Pull up to last week's -current.
1.9.6.1	23-Apr-2002	nathanw	Add support for handling multi-LWP processes by selecting one LWP as "representative" of the process. Also add a -s option that prints a line for each LWP. While I'm here, remove the /proc fallback code.
1.115	06-Nov-2021	msaitoh	s/maxiumum/maximum/
1.114	14-Sep-2021	christos	reflect reality on flags.
1.113	14-Sep-2021	christos	Provide symbolic printing of some keywords by capitalizing them.
1.112	04-Jun-2021	wiz	Sort options in synopsis.
1.111	04-Jun-2021	cjep	PR standards/11223 Add -G to take a single group argument heading towards POSIX.2 compliance. Patch from jperkin and reviewed by simonb.
1.110	06-Aug-2019	kamil	branches: 1.110.6; Restore maxrss, idrss, isrss, ixrss printing in ps(1) The RSS related statistics are now back in the NetBSD kernel. These values were disabled since day0 until today. libkvm(3) users will still receive inappropriate values as RSS statistics are updated upon sysctl(3) call. Patch submitted by <Krzysztof Lasocki>
1.109	28-Aug-2017	wiz	branches: 1.109.4; 1.109.6; Bump date for previous. Remove/replace bogus Tn uses.
1.108	28-Aug-2017	kamil	Remove the filesystem tracing feature This is a legacy interface from 4.4BSD, and it was introduced to overcome shortcomings of ptrace(2) at that time, which are no longer relevant (performance). Today /proc/#/ctl offers a narrow subset of ptrace(2) commands and is not applicable for modern applications use beyond simplistic tracing scenarios. This removal will simplify kernel internals. Users will still be able to use all the other /proc files. This change won't affect other procfs files neither Linux compat features within mount_procfs(8). /proc/#/ctl isn't available on Linux. Remove: - /proc/#/ctl from mount_procfs(8) - P_FSTRACE note from the documentation of ps(1) - /proc/#/ctl and filesystem tracing documentation from mount_procfs(8) - KAUTH_REQ_PROCESS_PROCFS_CTL documentation from kauth(9) - source code file miscfs/procfs/procfs_ctl.c - PFSctl and procfs_doctl() from sys/miscfs/procfs/procfs.h - KAUTH_REQ_PROCESS_PROCFS_CTL from sys/sys/kauth.h - PSL_FSTRACE (0x00010000) from sys/sys/proc.h - P_FSTRACE (0x00010000) from sys/sys/sysctl.h Reduce code complexity after removal of this functionality. Update TODO.ptrace accordingly: remove two entries about /proc tracing. Do not keep legacy notes as comments in the headers about removed PSL_FSTRACE / P_FSTRACE, as this interface had little number of users (close or equal to zero). Proposed on tech-kern@. All filesystem tracing utility users are encouraged to switch to ptrace(2). Sponsored by <The NetBSD Foundation>
1.107	03-Jul-2017	wiz	Remove workaround for ancient HTML generation code.
1.106	02-Dec-2016	christos	branches: 1.106.6; provide a tree like display with -d, from FreeBSD
1.105	10-Aug-2016	sevan	Earliest reference in the TUHS archive is v3 Unfortunately only the source code for the compiler is present for that release. The v2 archive is missing the manuals & only contains a some of the commands. Switch to v3 and reference manual category eight, as per r1.32 of src/bin/ps/ps.1 from OpenBSD. Heads up from Ingo Schwarze.
1.104	10-Aug-2016	sevan	Document the version ps first appeared.
1.103	15-Jan-2014	wiz	branches: 1.103.8; Bump date for previous.
1.102	15-Jan-2014	mlelstv	Add an LTIME column that prints lwp cputime.
1.101	03-Jun-2012	joerg	branches: 1.101.2; Switch device database to cdb(5). Rework ttyname(3) and ttyname_r(3) to depend on new devname_r(3) as heart. Add /dev/pts magic directly to devname(3). While it can lead to returning non-existing paths, the behavior is more consistent that way. Drop caching layer in devname(3), it doesn't buy anything for the common case of having access to the database. Teach devname(3) proper fallback behavior of scanning /dev. Create both old-style and new-style database for now in /etc/rc.d/sysdb.
1.100	15-Apr-2012	wiz	Increase width of table column so it formats more nicely.
1.99	15-Apr-2012	wiz	- choose better argument name for `-U'; - add argument names for options in man page; - improve wording, punctuation, capitalization. From Bug Hunting in email.
1.98	15-Mar-2012	wiz	Remove trailing whitespace.
1.97	15-Mar-2012	christos	Fix obsolete example (that referred to letters in process state that are not set anymore), and clarify their meaning.
1.96	23-Feb-2012	dholland	The 'lstart' column uses strftime %c, not %C. Noted by mrg.
1.95	27-Jan-2012	dholland	branches: 1.95.2; Minor English improvements for -w, partly from Snader_LB.
1.94	13-Feb-2011	dholland	branches: 1.94.4; fix typo, from Randolf Richardson in PR 44559
1.93	14-May-2010	joerg	branches: 1.93.2; Don't break lines in .It, there be dragons in groff.
1.92	22-Mar-2010	joerg	Use .In instead of .Aq Pa for header files
1.91	21-Oct-2009	wiz	Bump date for uarea swap-out removal.
1.90	21-Oct-2009	rmind	Remove uarea swap-out functionality: - Addresses the issue described in PR/38828. - Some simplification in threading and sleepq subsystems. - Eliminates pmap_collect() and, as a side note, allows pmap optimisations. - Eliminates XS_CTL_DATA_ONSTACK in scsipi code. - Avoids few scans on LWP list and thus potentially long holds of proc_lock. - Cuts ~1.5k lines of code. Reduces amd64 kernel size by ~4k. - Removes __SWAP_BROKEN cases. Tested on x86, mips, acorn32 (thanks <mpumford>) and partly tested on acorn26 (thanks to <bjh21>). Discussed on <tech-kern>, reviewed by <ad>.
1.89	03-Aug-2009	wiz	Bump date for previous.
1.88	03-Aug-2009	dsl	Remove reference to P_SYSTRACE. Fixes PR/41426 (leave defn in sys/sysctl.h since the bit shouldn't be reused!)
1.87	13-Mar-2009	joerg	Fix number of columns in .Bl. Escape %C.
1.86	19-Oct-2008	wiz	branches: 1.86.4; Improve wording.
1.85	19-Oct-2008	christos	Use 'O' for LSONPROC like solaris instead of bundling LSIDL, LSRUN, LSONPROC to 'R'
1.84	26-Sep-2008	wiz	Sort options. Remove systrace reference.
1.83	26-Sep-2008	apb	Add "ps -A" option. This displays information about all processes, like BSD "ps -ax" or SYSV "ps -ef". It's specified in SUSv3. Also make some minor clarifications to the man page.
1.82	10-Feb-2008	christos	Add a CPUID keyword; idea and some of the code from Anon Ymous
1.81	31-Dec-2007	ad	Remove systrace. Ok core@.
1.80	09-Sep-2007	apb	Document "emul" keyword. Fixes PR 36935. Also sort list of keywords, and bump date.
1.79	01-Sep-2007	yamt	add a keyword "lname", to print l_name.
1.78	25-Jun-2007	yamt	branches: 1.78.4; remove descriptions of some states. ('A', 'S', '>') - they are wrong. (madvise is not vadvise) - they don't exist anymore.
1.77	09-Oct-2006	wiz	Remove trailing whitespace. Remove a partially duplicated sentence.
1.76	07-Oct-2006	apb	Make it clear that multiple sort keys may be specified. Closes PR 34271.
1.75	03-Oct-2006	wiz	Avoid .No if easily possible.
1.74	02-Oct-2006	apb	Add some markup missed in previous.
1.73	02-Oct-2006	apb	Document changes to -o and -O options, and improve markup.
1.72	11-Nov-2005	chs	add "uaddr" and improve text for "laddr".
1.71	29-Dec-2004	skrll	branches: 1.71.2; Add the missing suspended state 'U'. Bump date.
1.70	23-Aug-2004	wiz	Bump date for laddr.
1.69	23-Aug-2004	nathanw	Add a "laddr" keyword, analagous to "paddr". Useful for finding struct pcb's.
1.68	23-Apr-2004	simonb	s/the the/the/ (only in sources that aren't regularly imported from elsewhere).
1.67	27-Mar-2004	simonb	Add support for the POSIX.2 "args" and "comm" keywords. "args" is just an alias for "command", and "comm" shows just argv[0] and not the whole argument list. Fix for part of PR standards/11224.
1.66	27-Mar-2004	simonb	Add support for the POSIX.2 "etime" keyword - shows the elapsed time since the process was started. Fix a couple of style nits as well. Fix for part of PR standards/11224.
1.65	13-Feb-2004	wiz	Uppercase CPU where appropriate.
1.64	16-Oct-2003	wiz	Add Xr for dev_mkdb(8), per PR 23168. Increase width in FILES section while here.
1.63	07-Aug-2003	agc	Move UCB-licensed code from 4-clause to 3-clause licence. Patches provided by Joel Baker in PR 22249, verified by myself.
1.62	16-Apr-2003	wiz	More mdoc.
1.61	17-Mar-2003	wiz	Update date for recent changes.
1.60	06-Mar-2003	dsl	- add keywords for utime, stime and ctime (output sss.ssssss if small) - fiddle with keyword table - mainly to keep width under 80 cols - add -k keylist so sort output - don't use logs to work out field width, get -MAXINT right - user defined headers can be 1 char (actually they can be zero length) so ?? in tty column isn't guaranteed to be wider than header - remove some long long casts (compiles on sparc64 still) - use kvm_openfiles(NULL, NULL, NULL, KVN_NO_FILES, ..) unless core file specified, (approved by christos)
1.59	01-Mar-2003	atatat	Add p_svuid and p_svgid to kinfo_proc2. Populate them in the kernel and in libkvm. Then teach ps how to show them to you. Also, teach ps how to show the names for all the uids, the rest of the group numbers, and the "group access list".
1.58	25-Feb-2003	wiz	.Nm does not need a dummy argument ("") before punctuation or for correct formatting of the SYNOPSIS any longer.
1.57	18-Jan-2003	thorpej	Merge the nathanw_sa branch.
1.56	01-Oct-2002	wiz	Use more mdoc.
1.55	25-Sep-2002	wiz	New policy: New sentences start on a new line. Patches by Robert Elz <kre at munnari oz au>, with minimal changes by me.
1.54	19-Jun-2002	jdolecek	g/c procfs fallback code, it's redundant now that we use sysctl to get process info
1.53	17-Jun-2002	wiz	Sort SEE ALSO.
1.52	17-Jun-2002	christos	Document some missing flags and add systrace(1) 'x' flag.
1.51	24-Apr-2002	wiz	"a, b, c, and d", not "a, b, c and d".
1.50	04-Mar-2002	wiz	branches: 1.50.2; Drop trailing space.
1.49	04-Mar-2002	ad	Xref pkill/pgrep.
1.48	08-Feb-2002	ross	Generate <>& symbolically. I'm avoiding .../dist/... directories for now.
1.47	20-Dec-2001	wiz	Properly quote punctuation.
1.46	20-Dec-2001	wiz	Whitespace nits.
1.45	20-Aug-2001	wiz	precede, not preceed.
1.44	07-Aug-2001	christos	Print system processes/kernel threads as [kprocname] as top(1) does.
1.43	04-Jul-2001	sommerfeld	correct the description of paddr
1.42	15-Jan-2001	christos	clarify things a bit more (from hubertf)
1.41	15-Jan-2001	christos	Really explain what parenthesized names mean and why we parenthesize names!
1.40	15-Jan-2001	hubertf	Document the meaning of commands shown in parantheses. Patches submitted by Jeremy C. Reed <reed@reedmedia.net> in PR 11930.
1.39	23-Oct-2000	simonb	Add a K flag to the state information - K is for kernel thread or system process (ie, P_SYSTEM set in p_flag). The L flag (locked in core) is only used for non-P_SYSTEM processes.
1.38	28-Aug-2000	nathanw	Update description of process flag 0x20000 to match reality: P_NOCLDWAIT, not P_SSTEP.
1.37	24-Jun-2000	simonb	Remove the 'poip' (pageouts in progress) keyword from the manpage. From PR bin/8843 by Brian Stark.
1.36	15-Apr-2000	simonb	branches: 1.36.4; Use tty "?" to select processes with no controlling tty and tty "-" to select processes with a revoked controlling tty. Idea from SunOS/Solaris, suggested by Alexis Rosen.
1.35	10-Apr-2000	chs	make -M imply -K. the current system is not likely to be a reasonable approximation of a crash dump.
1.34	22-Feb-2000	dbj	name database is kvm.db not kvm_netbsd.db
1.33	04-Dec-1999	hubertf	Document -U switch (displays processes belonging to given user/uid). Reported in PR 8943 by WL <wliao@dura.spc.uchicago.edu>
1.32	03-Dec-1999	simonb	"ps -e" only shows the environment for the processes owned by the current user id or all process if run by root. Fixes PR security/5967 from Todd Vierling.
1.31	27-Mar-1999	bgrayson	branches: 1.31.6; Minor fixes: 1. Use statfs() to verify that /proc is a procfs. 2. Add -K option to disable /proc-based method. 3. Make warnings less verbose, but still accurate.
1.30	26-Mar-1999	bgrayson	Added experimental fallback /proc-based lookup. Warnings are printed when the fallback method is used, as the results could be untrustworthy if an intruder is present. It is highly likely that NetBSD-1.5 will have an improved kvm interface for reading process information, at which point this code can be garbage-collected. Also added a word to the man page -x option description while I was here.
1.29	22-Mar-1999	garbled	More and more .Os cleanups. .Os is defined in the tmac.doc-common file, so we shouldn't override it with versions in the manpages. Many more to come.
1.28	17-Mar-1999	msaitoh	ps's information is sorted by controlling terminal and (among processes with the same controlling terminal) by PID.
1.27	07-Mar-1999	mycroft	Clean up SYNOPSIS formatting.
1.26	07-Mar-1999	mycroft	Fix formatting errors.
1.25	02-Jan-1999	tron	The system namelist database is called "/var/db/kvm.db" not "/var/db/kvm_netbsd.db". Fixes PR bin/6712 by Brian Grayson.
1.24	28-Apr-1998	fair	change references to vadvise to madvise; remove reference to lisp(1)
1.23	24-Mar-1998	bouyer	Sync with reality: the uprocp keyword doesn't exist.
1.22	06-Feb-1998	mrg	remove old OLD BSD VM code.
1.21	11-Oct-1997	enami	branches: 1.21.2; Use .Nm "" instead of .Nm ps in SYNOPSIS.
1.20	10-Oct-1997	lukem	all but the first .Nm in SYNOPSIS need to be spelt out. [bin/4256]
1.19	14-Sep-1997	lukem	getopt returns -1 not EOF cleanup manpage
1.18	27-Aug-1997	mikel	default swap device is /dev/drum, not nonexistent /dev/swap; from <entropy@tardis.bernstein.com> in PR bin/4042
1.17	23-Jun-1997	pk	Refer to execve(2), add section to `vfork' ref. (almost per PR#3627).
1.16	21-Mar-1996	jtc	fix damage caused by sccs (long ago)
1.15	08-May-1995	cgd	add a 'holdcnt' keyword and document it.
1.14	07-May-1995	pk	Sync process flags with sys/proc.h
1.13	21-Mar-1995	cgd	convert to new RCS id conventions.
1.12	16-Sep-1994	mycroft	Integrate `-c' option, from Arne Juul.
1.11	06-Aug-1994	jtc	vmunix -> netbsd (PR #375)
1.10	09-May-1994	cgd	branches: 1.10.2; clean up import
1.9	11-Jan-1994	jtc	Fix spelling errors.
1.8	07-Oct-1993	cgd	fix from Thomas Eberhardt <thomas@mathematik.uni-Bremen.de>: don't try to display the resident text size; we can't do that anymore
1.7	01-Aug-1993	mycroft	Add RCS indentifiers.
1.6	13-Jun-1993	mycroft	Fix up FILES sections.
1.5	13-Jun-1993	mycroft	Update file names.
1.4	01-Jun-1993	cgd	add support and documentation for the 'e' option, to print out the process environment.
1.3	23-Mar-1993	cgd	changed "Id" to "Header" for rcsids
1.2	22-Mar-1993	cgd	added rcs ids to all files
1.1	21-Mar-1993	cgd	branches: 1.1.1; Initial revision
1.1.1.2	09-May-1994	cgd	new ps, to match libkvm
1.1.1.1	21-Mar-1993	cgd	initial import of 386bsd-0.1 sources
1.10.2.1	06-Aug-1994	mycroft	update from trunk
1.21.2.1	05-May-1998	mycroft	Pull up 1.23, per request of bouyer. Also do 1.24.
1.31.6.1	27-Dec-1999	wrstuden	Pull up to last week's -current.
1.36.4.2	27-Jan-2001	jhawk	Pull up revisions 1.40-1.42 (requested by hubertf): Clarify meaning of COMMANDs printed in parentheses. Addresses PR11930.
1.36.4.1	25-Jun-2000	simonb	Pull up rev 1.37: Remove the 'poip' (pageouts in progress) keyword from the manpage. From PR bin/8843 by Brian Stark.
1.50.2.5	12-Nov-2002	nathanw	Catch up to -current.
1.50.2.4	24-Apr-2002	nathanw	Note the presense of multiple LWPs or scheduler activations under "state". Add a "lstate" that prints LWP-specific state and display it instead of "state" under ps -s.
1.50.2.3	23-Apr-2002	wrstuden	Add -s to synopsis.
1.50.2.2	23-Apr-2002	nathanw	Add support for handling multi-LWP processes by selecting one LWP as "representative" of the process. Also add a -s option that prints a line for each LWP. While I'm here, remove the /proc fallback code.
1.50.2.1	04-Mar-2002	nathanw	file ps.1 was added on branch nathanw_sa on 2002-04-23 20:41:13 +0000
1.71.2.1	12-Nov-2005	tron	Pull up following revision(s) (requested by chs in ticket #953): bin/ps/ps.1: revision 1.72 add "uaddr" and improve text for "laddr".
1.78.4.3	23-Mar-2008	matt	sync with HEAD
1.78.4.2	09-Jan-2008	matt	sync with HEAD
1.78.4.1	06-Nov-2007	matt	sync with HEAD
1.86.4.1	13-May-2009	jym	Sync with HEAD. Third (and last) commit. See http://mail-index.netbsd.org/source-changes/2009/05/13/msg221222.html
1.93.2.1	17-Feb-2011	bouyer	Sync with HEAD
1.94.4.3	22-May-2014	yamt	sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments")
1.94.4.2	30-Oct-2012	yamt	sync with head
1.94.4.1	17-Apr-2012	yamt	sync with head
1.95.2.1	23-Jun-2012	riz	Pull up following revision(s) (requested by joerg in ticket #328): lib/libc/gen/devname.c: revision 1.22 distrib/sparc64/instfs/dot.profile: revision 1.7 distrib/i386/cdroms/install.sh: revision 1.3 tests/lib/libcurses/director/director.c: revision 1.10 lib/libc/include/reentrant.h: revision 1.15 distrib/amd64/cdroms/install.sh: revision 1.3 tests/include/t_paths.c: revision 1.12 share/man/man7/hier.7: revision 1.101 etc/rc.d/sysdb: revision 1.24 include/stdlib.h: revision 1.99 tests/lib/libcurses/Makefile: revision 1.3 distrib/sparc64/cdroms/installcd/install.sh: revision 1.3 distrib/i386/cdroms/Makefile.cdrom: revision 1.27 lib/libc/gen/ttyname.c: revision 1.25 usr.bin/tic/Makefile: revision 1.2 tools/compat/Makefile: revision 1.57 lib/libterminfo/compile.c: revision 1.7 lib/libc/gen/ttyname.c: revision 1.26 lib/libterminfo/compile.c: revision 1.8 tools/compat/Makefile: revision 1.59 tools/compat/cdbw.h: revision 1.1 distrib/i386/installimage/install.sh: revision 1.2 lib/libc/include/namespace.h: revision 1.154 usr.bin/tic/tic.c: revision 1.13 usr.bin/tic/tic.c: revision 1.14 usr.bin/tic/tic.c: revision 1.15 distrib/sets/lists/base/mi: revision 1.996 usr.bin/tic/tic.c: revision 1.16 usr.sbin/dev_mkdb/dev_mkdb.8: revision 1.13 usr.bin/tic/tic.c: revision 1.17 usr.bin/tic/tic.c: revision 1.18 tools/compat/cdbr.h: revision 1.1 distrib/sparc64/instfs/list: revision 1.25 usr.bin/tic/tic.c: revision 1.19 lib/libc/cdb/cdbw.c: revision 1.4 lib/libc/cdb/cdbw.3: revision 1.4 lib/libc/cdb/cdbw.3: revision 1.5 share/terminfo/Makefile: revision 1.3 usr.sbin/dev_mkdb/dev_mkdb.c: revision 1.29 usr.sbin/dev_mkdb/Makefile: revision 1.8 lib/libc/gen/ttyname.3: revision 1.23 lib/libc/gen/ttyname.3: revision 1.24 lib/libc/cdb/cdbr.c: revision 1.3 include/cdbw.h: revision 1.2 distrib/sparc64/cdroms/installcd/Makefile: revision 1.15 lib/libc/gen/devname.3: revision 1.12 tools/compat/compat_defs.h: revision 1.85 tools/compat/compat_defs.h: revision 1.86 lib/libterminfo/term_private.h: revision 1.10 lib/libterminfo/term.c: revision 1.14 usr.bin/tic/tic.1: revision 1.10 lib/libterminfo/term.c: revision 1.15 lib/libterminfo/Makefile.hash: revision 1.5 lib/libterminfo/term.c: revision 1.16 distrib/amd64/installimage/install.sh: revision 1.2 share/man/man5/rc.conf.5: revision 1.152 distrib/sets/lists/tests/mi: revision 1.472 distrib/amd64/cdroms/Makefile.cdrom: revision 1.7 include/paths.h: revision 1.41 bin/ps/ps.1: revision 1.101 lib/libterminfo/terminfo.5.in: revision 1.16 usr.bin/tic/tic.c: revision 1.20 lib/libterminfo/terminfo.5.in: revision 1.17 Prefer __printflike. Use queue(3) Replace linear lookup with hash table, reducing runtime by 60%. Use e* from util.h. One more strdup -> estrdup. Maintain nalias and nterm on the fly. Add void for ttyslot prototype. Use memcmp in place of strncmp, since length is known to no longer than either of the arguments. Fix a number of memory leaks. Keep final loop of the cleanup in tic(1) under #ifdef __VALGRIND__ though. Add __predict_true / __predict_false definitions. Add a special seeder for cdbw_output that gives stable results. Hook up cdbw(3) for the tool build. Prototype for cdbw_stable_seeder. Provide a usable thr_once for !_REENTRANT Switch device database to cdb(5). Rework ttyname(3) and ttyname_r(3) to depend on new devname_r(3) as heart. Add /dev/pts magic directly to devname(3). While it can lead to returning non-existing paths, the behavior is more consistent that way. Drop caching layer in devname(3), it doesn't buy anything for the common case of having access to the database. Teach devname(3) proper fallback behavior of scanning /dev. Create both old-style and new-style database for now in /etc/rc.d/sysdb. Switch terminfo(3) to cdb(5). Fix typos. Make Alan Barrett happy and add (). Add cdbr(3) support to tools/compat. Bump date for previous. Relax consistency to make it possible to match valid entries. Prefix devname's buffer with /dev/ as ttyname is supposed to return the full path. Reported by Dave Huang.
1.101.2.1	19-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.103.8.1	07-Jan-2017	pgoyette	Sync with HEAD. (Note that most of these changes are simply $NetBSD$ tag issues.)
1.106.6.1	12-Apr-2018	martin	Pull up following revision(s) (requested by kamil in ticket #713): sys/modules/procfs/Makefile: revision 1.4 sys/miscfs/procfs/procfs_vfsops.c: revision 1.98 bin/ps/ps.1: revision 1.108 sys/compat/linux/arch/i386/linux_ptrace.c: revision 1.32 sys/miscfs/procfs/procfs_vnops.c: revision 1.198 sys/kern/sys_ptrace_common.c: revision 1.23 sys/kern/sys_ptrace_common.c: revision 1.24 sbin/mount_procfs/mount_procfs.8: revision 1.36 sys/kern/sys_ptrace_common.c: revision 1.25 sys/kern/sys_ptrace.c: revision 1.5 sys/compat/linux/arch/powerpc/linux_ptrace.c: revision 1.30 sys/sys/proc.h: revision 1.342 sys/kern/sys_ptrace_common.c: revision 1.26 sys/miscfs/procfs/procfs_ctl.c: file removal sys/kern/sys_ptrace_common.c: revision 1.27 sys/miscfs/procfs/procfs_subr.c: revision 1.109 sys/kern/sys_ptrace_common.c: revision 1.28 sys/secmodel/extensions/secmodel_extensions.c: revision 1.8 sys/kern/sys_ptrace_common.c: revision 1.29 sys/sys/ptrace.h: revision 1.62 sys/compat/netbsd32/netbsd32_signal.c: revision 1.45 share/man/man9/kauth.9: revision 1.109 sys/miscfs/procfs/files.procfs: revision 1.12 sys/compat/netbsd32/netbsd32.h: revision 1.115 sys/miscfs/procfs/procfs.h: revision 1.72 sys/compat/netbsd32/netbsd32_ptrace.c: revision 1.5 sys/kern/kern_sig.c: revision 1.337 sys/sys/kauth.h: revision 1.75 sys/sys/sysctl.h: revision 1.224 sys/kern/sys_ptrace_common.c: revision 1.30 sys/kern/sys_ptrace_common.c: revision 1.31 sys/kern/sys_ptrace_common.c: revision 1.32 sys/kern/sys_ptrace_common.c: revision 1.33 sys/compat/linux/arch/arm/linux_ptrace.c: revision 1.20 sys/kern/sys_ptrace_common.c: revision 1.34 sys/kern/sys_ptrace_common.c: revision 1.36 sys/kern/kern_proc.c: revision 1.207 sys/kern/kern_exit.c: revision 1.269 doc/TODO.ptrace: revision 1.29 Make {s,g}et{db,fp,}regs work again for PK_32 processes XXX: pullup-8 add disgusting magic to handle compat_netbsd32 as a module. use process_reg32 instead of struct reg32. Remove the filesystem tracing feature This is a legacy interface from 4.4BSD, and it was introduced to overcome shortcomings of ptrace(2) at that time, which are no longer relevant (performance). Today /proc/#/ctl offers a narrow subset of ptrace(2) commands and is not applicable for modern applications use beyond simplistic tracing scenarios. This removal will simplify kernel internals. Users will still be able to use all the other /proc files. This change won't affect other procfs files neither Linux compat features within mount_procfs(8). /proc/#/ctl isn't available on Linux. Remove: - /proc/#/ctl from mount_procfs(8) - P_FSTRACE note from the documentation of ps(1) - /proc/#/ctl and filesystem tracing documentation from mount_procfs(8) - KAUTH_REQ_PROCESS_PROCFS_CTL documentation from kauth(9) - source code file miscfs/procfs/procfs_ctl.c - PFSctl and procfs_doctl() from sys/miscfs/procfs/procfs.h - KAUTH_REQ_PROCESS_PROCFS_CTL from sys/sys/kauth.h - PSL_FSTRACE (0x00010000) from sys/sys/proc.h - P_FSTRACE (0x00010000) from sys/sys/sysctl.h Reduce code complexity after removal of this functionality. Update TODO.ptrace accordingly: remove two entries about /proc tracing. Do not keep legacy notes as comments in the headers about removed PSL_FSTRACE / P_FSTRACE, as this interface had little number of users (close or equal to zero). Proposed on tech-kern@. All filesystem tracing utility users are encouraged to switch to ptrace(2). Sponsored by <The NetBSD Foundation> untangle the mess: - factor out common code - break each ptrace subcall to its own sub-function .. more to come ... - reduce ifdef ugliness by moving it up top. - factor out PT_IO and make PT_{READ,WRITE}_{I,D} use it - factor out PT_DUMPCORE - factor out sendsig code .. more to come ... handle siginfo requests for ptrace32 ptrace: Partially undo PT_{READ,WRITE}_{I,D} and unbreak these commands The refactored code did not work and was generating EFAULT. Sponsored by <The NetBSD Foundation> Merge the code back; the problem was that since we are reading/writing to a kernel address for PT_{READ,WRITE}_{I,D} we need the kernel vmspace. provide separate read and write functions to accomodate register functions that need a size argument. don't ignore error from copyout_piod Use the proper process (the tracee) to get information about lwps and registers and the tracer for vmspace. Add new sysctl(3) entry: security.models.extensions.user_set_dbregs Model this new sysctl(3) entry after "user_set_cpu_affinity" in the same level of sysctl(3) switches. Allow to read unconditionally Debug Registers (no change here). This is convenient as even if a user of a debugger does not use hardware assisted watchpoints/breakpoints, a debugger can still prompt these values to store in an internal cache with context of registers. Reading them should have no security concerns. Add a paranoid MI switch that prohibits by default setting these registers by a regular user (non-superuser). Make this switch disabled by default. There are enough reserved bits out there to allow using them unconditionally on hardened hosts. Features shipped with Debug Registers are optional features in debuggers. There is no reduction in elementary functionality. Reviewed by <christos> Sponsored by <The NetBSD Foundation>
1.109.6.1	07-Aug-2019	martin	Pull up following revision(s) (requested by kamil in ticket #24): bin/ps/ps.1: revision 1.110 bin/ps/keyword.c: revision 1.57 Restore maxrss, idrss, isrss, ixrss printing in ps(1) The RSS related statistics are now back in the NetBSD kernel. These values were disabled since day0 until today. libkvm(3) users will still receive inappropriate values as RSS statistics= are updated upon sysctl(3) call. Patch submitted by <Krzysztof Lasocki>
1.109.4.3	21-Apr-2020	martin	Ooops, restore accidently removed files from merge mishap
1.109.4.2	21-Apr-2020	martin	Sync with HEAD
1.109.4.1	13-Apr-2020	martin	Mostly merge changes from HEAD upto 20200411
1.110.6.1	06-Jun-2021	cjep	sync with head
1.98	13-Jul-2025	rillig	ps: remove unreachable break statement after return statement No binary change.
1.97	14-Sep-2021	christos	branches: 1.97.4; use emalloc and friends, add ktrace flag printing.
1.96	04-Jun-2021	christos	use parsenum like everywhere else in the code.
1.95	04-Jun-2021	wiz	Sort options in usage.
1.94	04-Jun-2021	cjep	PR standards/11223 Add -G to take a single group argument heading towards POSIX.2 compliance. Patch from jperkin and reviewed by simonb.
1.93	15-Sep-2019	kamil	branches: 1.93.6; ps(1): Guard freeing the memory of pinfo with __NO_LEAKS. No more leaks are detected by LSan/NetBSD as of the LLVM snapshot (clang10svn) from 2019-09-15.
1.92	11-Sep-2019	kamil	Plug memory leak in ps(1) pinfo is allocated in setpinfo() with calloc(3). Free it when no longer used, just before the program termination. Detected with LSan.
1.91	11-Apr-2018	christos	branches: 1.91.2; kvm_geterr() already contains errno, use errx.
1.90	11-Apr-2018	christos	use EXIT_FAILURE instead of 1
1.89	12-Jan-2018	kamil	branches: 1.89.2; Fix an unitialized memory read bug in ps(1) rawcpu of type int, is declared inside main(){} and it can be passed as uninitialized to setpinfo(). The setpinfo() function has a switch checking the value of rawcpu: if (!rawcpu) pi[i].pcpu /= 1.0 - exp(ki[i].p_swtime * log_ccpu); rawcpu is set to 1 with the command line argument "-C". -C Change the way the CPU percentage is calculated by using a "raw" CPU calculation that ignores "resident" time (this normally has no effect). Bug reproducible with an invocation: "ps u". It hides with "ps uC". Initialize rawcpu by default to 0, before the getopt(3) machinery. Detected with MSan running on NetBSD/amd64. Sponsored by <The NetBSD Foundation>
1.88	26-Dec-2016	rin	branches: 1.88.6; simplify logic; there must be no CPU usage when p_swtime is zero
1.87	02-Dec-2016	christos	provide a tree like display with -d, from FreeBSD
1.86	28-Nov-2016	rin	Calculate CPU usage (pcpu) once per process if it is required. This change significantly improves performance for slow machines when output is sorted by pcpu. ok martin
1.85	28-Nov-2016	rin	KNF ok martin
1.84	05-Sep-2016	sevan	Drop main() prototype.
1.83	16-Jun-2015	christos	branches: 1.83.2; remove \n from error messages
1.82	28-Jun-2014	dholland	Don't print junk errnos. Avoids: % ps -tfoo ps: /dev/ttyfoo: Undefined error: 0 Exit 1
1.81	20-Apr-2014	dholland	Don't bother using variables whose value is never changed from the initialization value.
1.80	19-Feb-2014	dsl	branches: 1.80.2; Remove some pointless inclusions os sys/user.h
1.79	15-Jan-2014	mlelstv	Make ps -s use LTIME instead of TIME in the default output format.
1.78	07-May-2012	joerg	branches: 1.78.2; Push logic to convert a ttyname to a device number into its own function. Improve dealing with ptyfs by explicitly handling missing pts/%d entries, if the kernel supports the pts device (PR 40813).
1.77	15-Apr-2012	wiz	Choose better argument name for `-U' (sync with man page). From Bug Hunting in email.
1.76	29-Aug-2011	joerg	branches: 1.76.2; 1.76.4; Use __dead
1.75	31-May-2010	rmind	Fix ps(1) and top(1) to show reasonable CPU numbers i.e. cpu_index() provided by the kernel, instead of CPU order number, which is generally random.
1.74	29-Mar-2009	mrg	- add new RLIMIT_AS (aka RLIMIT_VMEM) resource that limits the total address space available to processes. this limit exists in most other modern unix variants, and like most of them, our defaults are unlimited. remove the old mmap / rlimit.datasize hack. - adds the VMCMD_STACK flag to all the stack-creation vmcmd callers. it is currently unused, but was added a few years ago. - add a pair of new process size values to kinfo_proc2{}. one is the total size of the process memory map, and the other is the total size adjusted for unused stack space (since most processes have a lot of this...) - patch sh, and csh to notice RLIMIT_AS. (in some cases, the alias RLIMIT_VMEM was already present and used if availble.) - patch ps, top and systat to notice the new k_vm_vsize member of kinfo_proc2{}. - update irix, svr4, svr4_32, linux and osf1 emulations to support this information. (freebsd could be done, but that it's best left as part of the full-update of compat/freebsd.) this addresses PR 7897. it also gives correct memory usage values, which have never been entirely correct (since mmap), and have been very incorrect since jemalloc() was enabled. tested on i386 and sparc64, build tested on several other platforms. thanks to many folks for feedback and testing but most espcially chuq and yamt for critical suggestions that lead to this patch not having a special ugliness i wasn't happy with anyway :-)
1.73	14-Feb-2009	lukem	fix -Wsign-compare issues
1.72	28-Dec-2008	christos	branches: 1.72.2; fix dev_t 64 bit issues.
1.71	26-Sep-2008	wiz	branches: 1.71.4; Sync usage with man page.
1.70	26-Sep-2008	apb	Add "ps -A" option. This displays information about all processes, like BSD "ps -ax" or SYSV "ps -ef". It's specified in SUSv3. Also make some minor clarifications to the man page.
1.69	20-Jul-2008	lukem	Remove the \n and tabs from the __COPYRIGHT() strings.
1.68	26-May-2008	christos	PR/38755: murray armfield: /bin posix programs missing setprogname and/or setlocale
1.67	28-Apr-2008	martin	branches: 1.67.2; Remove clause 3 and 4 from TNF licenses
1.66	10-Mar-2008	dholland	branches: 1.66.2; ps -t? needs to imply -x. Otherwise the non-x logic filters all the results out. Thanks to der Mouse for prompting me to fix it...
1.65	10-Feb-2008	christos	branches: 1.65.2; Add a CPUID keyword; idea and some of the code from Anon Ymous
1.64	24-Oct-2007	yamt	make -s alter the default format rather than doing parsefmt. it allows users to use -o to replace it later.
1.63	17-Feb-2007	pavel	branches: 1.63.4; Revert the changes done after newlock2 merge, except for the removal of the now unused LSDEAD state. The current kernel headers are now source-compatible with pre-newlock2 kernel headers again. Approved by Andrew Doran.
1.62	09-Feb-2007	ad	Sync with kernel changes introduced by merging the newlock2 branch.
1.61	02-Oct-2006	apb	* When all columns are given null customised headers, the blank header line is not printed at all. This is specified in P1003.1-2004 (SUSv3), and is useful. * Customised headers may contain embedded space, commas and equals signs. To specify multiple customised headers, use multiple -o or -O options. This is specified (for "-o", not for "-O") in P1003.1-2004 (SUSv3), and is useful. * When a column is given a null (blank) customised header, it keeps its default minimum width. This is specified in P1003.1-2004 (SUSv3), and seems harmless. * Fix a bug that made it impossible to print the same keyword multiple times, with different customised headers each time. (Previously, the last customised header was used for all instances of the keyword.) * Make the behaviour of "-O" more useful. The first -O option adds the default keywords only if there have not yet been any formatting options, and multiple -O options now insert their keywords in adjacent positions. Now {ps -j -O %cpu} is like {ps -j} with one extra column; Previously, it would have had all the columns implied by "-j", plus all the default columns, plus the extra column specified by "-O". * Convert from home-grown linked lists to SIMPLEQ lists. Discussed in tech-userlevel.
1.60	02-Sep-2006	christos	factor out the code that does numeric parsing into a function and check for errors properly.
1.59	26-Jun-2005	christos	sprinkle a little const, and now everything compiles with WARNS=3
1.58	01-Jun-2005	lukem	appease gcc -Wuninitialized
1.57	11-Feb-2005	christos	allow -t ttyp0 -t p0 -t /dev/ttyp0 -t /dev/pts/0
1.56	29-Nov-2004	atatat	Make ps understand "-tpts/4" by assuming that ptyfs is mounted on /dev/pts and that the '/' immediately preceding the digits does not need a 'p' in front of it (ick, kludge_oldps_options()).
1.55	29-Oct-2004	dsl	Add (unsigned char) cast to ctype function
1.54	27-Mar-2004	simonb	#define<TAB>
1.53	27-Mar-2004	simonb	Wrap some long lines. Consisently use (void) in front of printf(...); A few more white-space nits.
1.52	27-Mar-2004	simonb	KNF, ANSFify, de-__P, unC++ify, white space nits.
1.51	11-Jan-2004	jdolecek	g/c SDEAD
1.50	07-Aug-2003	agc	Move UCB-licensed code from 4-clause to 3-clause licence. Patches provided by Joel Baker in PR 22249, verified by myself.
1.49	06-Mar-2003	dsl	- add keywords for utime, stime and ctime (output sss.ssssss if small) - fiddle with keyword table - mainly to keep width under 80 cols) - add -k keylist so sort output - don't use logs to work out field width, get -MAXINT right - user defined headers can be 1 char (actually they can be zero length) so ?? in tty column isn't guaranteed to be wider than header - use PRId64 to remove some long long casts - use kvm_openfiles(NULL, NULL, NULL, KVN_NO_FILES, ..) unless core file specified (approved by christos)
1.48	18-Jan-2003	thorpej	Merge the nathanw_sa branch.
1.47	19-Jun-2002	jdolecek	g/c procfs fallback code, it's redundant now that we use sysctl to get process info
1.46	20-Dec-2001	soren	branches: 1.46.2; Sync getopt() / man page with actual getopt options.
1.45	03-Nov-2001	lukem	fix minor WARNS=2
1.44	30-Jul-2001	wiz	Remove duplicate `if'. Noted by Geoff C. Wing in bin/13551.
1.43	20-Jul-2001	matt	Add a small optimizetion in savevars(). break out of the loop once needcomm is set since setting it multiple times only wastes cpu time.
1.42	14-Jun-2001	cyber	If there were no processes to list, it meant that our criteria failed and didnt match anything. Dont make our caller think we succeeded.
1.41	16-Jun-2000	simonb	Don't check namelist when choosing to use the sysctl interface.
1.40	08-Jun-2000	simonb	Fix handling of "ps U<user>" where <user> ended it 't' - now if the first argument doesn't start with a '-' and ends in 't', the 't' only gets converted to a 'T' (for listing processes on the current tty) if it doesn't contain any other command line option characters that take an argument. Problem noticed by ITOH Yasufumi on tech-userlevel. If the 'start' format was the last column, the width wouldn't be set and started() output a zero length string instead of a string the right length - fix header width calculations so the the last column is handled the same all others. This only showed up for 'start' because started() knew that the column header is the same width and the field itself... Update copyrights.
1.39	07-Jun-2000	simonb	Calculate field widths on the fly so that all columns line up nicely and make more effective use of screen real estate when some columns (eg USER and VSZ) didn't need the full default width.
1.38	26-May-2000	simonb	branches: 1.38.2; Use new sysctl/kvm interfaces. This will stop the "proc size mismatch" errors when internal kernel structures change size. Also remove the sgid bit - all live kernel data is accessed through the sysctl interface.
1.37	29-Apr-2000	abs	If ps cannot get the terminal size from STDOUT, it tried STDERR and STDIN. What this does to the POLS when a script that is parsing ps output just happens to run in a narrow terminal cannot be described in polite company. If STDOUT is not a tty, leave width at 80.
1.36	15-Apr-2000	simonb	Use tty "?" to select processes with no controlling tty and tty "-" to select processes with a revoked controlling tty. Idea from SunOS/Solaris, suggested by Alexis Rosen.
1.35	10-Apr-2000	chs	make -M imply -K. the current system is not likely to be a reasonable approximation of a crash dump.
1.34	04-Dec-1999	hubertf	Document -U switch (displays processes belonging to given user/uid). Reported in PR 8943 by WL <wliao@dura.spc.uchicago.edu>
1.33	03-Dec-1999	simonb	"ps -e" only shows the environment for the processes owned by the current user id or all process if run by root. Fixes PR security/5967 from Todd Vierling.
1.32	09-Nov-1999	drochner	Since our gcc doesn't warn about NULL format strings anymore, we can fix the incorrect err(1, "%s", "") et al. Closes PR bin/7592 by cgd.
1.31	15-Oct-1999	jdolecek	command(): don't start using procfs_getargv() instead of kvm_getargv() just because the latter returned a NULL - that may normally happen, when the process is, for example, a kernel thread procfs_getargv(): if the name is brackened in '(' and ')', just return NULL immediately - the code in command() will DTRT and the output will be same for procfs- and kvm- based lookup in all cases
1.30	15-Oct-1999	jdolecek	getkinfo_kvm(): fix bug in previous - handled size_t i as if it would be signed saveuser(): don't check kd - if we get here, kd is never NULL
1.29	15-Oct-1999	jdolecek	When using the procfs for extracting process information, extract also process start time, process arguments and session leadership status. The procfs fallback is also used when kvm_openfiles() completely fails (e.g. when /dev/mem is not readable). Solves PR 7772, though the final implementation is different.
1.28	27-Mar-1999	bgrayson	branches: 1.28.2; 1.28.4; Minor fixes: 1. Use statfs() to verify that /proc is a procfs. 2. Add -K option to disable /proc-based method. 3. Make warnings less verbose, but still accurate.
1.27	26-Mar-1999	bgrayson	Added experimental fallback /proc-based lookup. Warnings are printed when the fallback method is used, as the results could be untrustworthy if an intruder is present. It is highly likely that NetBSD-1.5 will have an improved kvm interface for reading process information, at which point this code can be garbage-collected. Also added a word to the man page -x option description while I was here.
1.26	04-Jan-1999	kim	Fixed segfaulting for "ps -T". There is no optarg with -T, so instructions under label "tty:" need to use ttname instead.
1.25	28-Jul-1998	mycroft	Add a -U option to select by user/uid.
1.24	28-Jul-1998	mycroft	Be more retentive about use of NOTREACHED and noreturn.
1.23	28-Jul-1998	mycroft	Delint.
1.22	27-Jul-1998	mycroft	__AUDIT__ cleanup.
1.21	06-Jul-1998	mrg	- change setgid kmem programs (that lend themselves to this) so setegid(getgid()) and the top, and then set the effective gid back to kmem around the call to kvm_openfiles(). this reduces the time group kmem is available. - for those above that also allow this, setgid(getgid()) after the call to kvm_openfiles() to fully revoke priviledges. - some KNF - use err(3) over fprintf(3) in some places
1.20	14-Sep-1997	lukem	getopt returns -1 not EOF cleanup manpage
1.19	20-Jul-1997	christos	Fix compiler warnings Add WARNS=1
1.18	21-Apr-1997	mrg	note that strcpy is safe.
1.17	28-Feb-1997	pk	Message buffer passed to kvm_openfiles() should _POSIX2_LINE_MAX long; PR#3266
1.16	27-Sep-1996	thorpej	Fix SEGV when kludging old-style options. From Greg Stark <gsstark@mit.edu>, PR #2550.
1.15	18-May-1995	mycroft	Create and strvis(3) the argument and environment lists only as needed. Do not keep extra copies around.
1.14	18-May-1995	mycroft	Gather the argument and environment lists when we actually want to print them.
1.13	21-Mar-1995	cgd	convert to new RCS id conventions.
1.12	16-Sep-1994	mycroft	Integrate `-c' option, from Arne Juul.
1.11	09-May-1994	cgd	clean up import
1.10	05-May-1994	cgd	update for changed flags
1.9	07-Oct-1993	cgd	fix from Thomas Eberhardt <thomas@mathematik.uni-Bremen.de>: don't try to display the resident text size; we can't do that anymore
1.8	01-Aug-1993	mycroft	Add RCS identifiers.
1.7	19-Jul-1993	cgd	branches: 1.7.2; from Brian Somers <brian@awfulhak.demon.co.uk>: The kvm entry isn't updated for command unless 'time' is given, therefore ps -o command outputs blank lines [or, in NetBSD, seg faults] ps -o time,command works.
1.6	11-Jul-1993	cgd	fix alien 'w' handling. you really don't want to know...
1.5	01-Jun-1993	cgd	add support and documentation for the 'e' option, to print out the process environment.
1.4	23-Mar-1993	cgd	changed "Id" to "Header" for rcsids
1.3	22-Mar-1993	cgd	added rcs ids to all files
1.2	21-Mar-1993	cgd	after 0.2.2 "stable" patches applied
1.1	21-Mar-1993	cgd	branches: 1.1.1; Initial revision
1.1.1.2	09-May-1994	cgd	new ps, to match libkvm
1.1.1.1	21-Mar-1993	cgd	initial import of 386bsd-0.1 sources
1.7.2.2	19-Jul-1993	cgd	from Brian Somers <brian@awfulhak.demon.co.uk>: The kvm entry isn't updated for command unless 'time' is given, therefore ps -o command outputs blank lines [or, in NetBSD, seg faults] ps -o time,command works.
1.7.2.1	19-Jul-1993	cgd	file ps.c was added on branch netbsd-0-9 on 1993-07-19 11:02:11 +0000
1.28.4.1	27-Dec-1999	wrstuden	Pull up to last week's -current.
1.28.2.2	22-May-2000	he	Pull up revision 1.37 (requested by abs): Only check the terminal size via STDOUT, not STDERR or STDIN.
1.28.2.1	08-Nov-1999	cgd	pull up revs 1.29-1.31 from trunk (requested by jdolecek): When using the procfs for extracting process information, extract process start time, arguments, and session leadership status. Also, fall back to procfs when kvm_openfiles() completely fails (e.g. when /dev/mem is not readable). Fixes PR#7772.
1.38.2.1	22-Jun-2000	minoura	Sync w/ netbsd-1-5-base.
1.46.2.11	12-Nov-2002	nathanw	Catch up to -current.
1.46.2.10	24-Oct-2002	nathanw	Small typo fix. Treat SSTOP and SACTIVE the same way in pick_representative_lwp(), and include LSSTOP in the state hierarchy.
1.46.2.9	26-Jul-2002	nathanw	Consider LWPs in LSSUSPENDED as a worst-case for a representative LWP.
1.46.2.8	06-Jun-2002	nathanw	Use the real process state when picking a representative LWP, not the old-style state that was faked up for us by sysctl.
1.46.2.7	02-May-2002	nathanw	Don't puke on zero-LWP processes (zombies).
1.46.2.6	24-Apr-2002	nathanw	Note the presense of multiple LWPs or scheduler activations under "state". Add a "lstate" that prints LWP-specific state and display it instead of "state" under ps -s.
1.46.2.5	23-Apr-2002	wrstuden	Add -s to synopsis.
1.46.2.4	23-Apr-2002	nathanw	Don't need to free the kinfo_lwp pointer; libkvm does that.
1.46.2.3	23-Apr-2002	nathanw	Don't shadow global symbol "sleep".
1.46.2.2	23-Apr-2002	nathanw	Add support for handling multi-LWP processes by selecting one LWP as "representative" of the process. Also add a -s option that prints a line for each LWP. While I'm here, remove the /proc fallback code.
1.46.2.1	20-Dec-2001	nathanw	file ps.c was added on branch nathanw_sa on 2002-04-23 20:41:14 +0000
1.63.4.2	23-Mar-2008	matt	sync with HEAD
1.63.4.1	06-Nov-2007	matt	sync with HEAD
1.65.2.1	24-Mar-2008	keiichi	sync with head.
1.66.2.2	04-Jun-2008	yamt	sync with head
1.66.2.1	18-May-2008	yamt	sync with head.
1.67.2.2	18-Sep-2008	wrstuden	Sync with wrstuden-revivesa-base-2.
1.67.2.1	23-Jun-2008	wrstuden	Sync w/ -current. 34 merge conflicts to follow.
1.71.4.1	01-Apr-2009	snj	Pull up following revision(s) (requested by mrg in ticket #622): bin/csh/csh.1: revision 1.46 bin/csh/func.c: revision 1.37 bin/ps/print.c: revision 1.111 bin/ps/ps.c: revision 1.74 bin/sh/miscbltin.c: revision 1.38 bin/sh/sh.1: revision 1.92 via patch external/bsd/top/dist/machine/m_netbsd.c: revision 1.7 lib/libkvm/kvm_proc.c: revision 1.82 sys/arch/mips/mips/cpu_exec.c: revision 1.55 sys/compat/darwin/darwin_exec.c: revision 1.57 sys/compat/ibcs2/ibcs2_exec.c: revision 1.73 sys/compat/irix/irix_resource.c: revision 1.15 sys/compat/linux/arch/amd64/linux_exec_machdep.c: revision 1.16 sys/compat/linux/arch/i386/linux_exec_machdep.c: revision 1.12 sys/compat/linux/common/linux_limit.h: revision 1.5 sys/compat/osf1/osf1_resource.c: revision 1.14 sys/compat/svr4/svr4_resource.c: revision 1.18 sys/compat/svr4_32/svr4_32_resource.c: revision 1.17 sys/kern/exec_subr.c: revision 1.62 sys/kern/init_sysctl.c: revision 1.160 sys/kern/kern_exec.c: revision 1.288 sys/kern/kern_resource.c: revision 1.151 sys/sys/param.h: patch sys/sys/resource.h: revision 1.31 sys/sys/sysctl.h: revision 1.184 sys/uvm/uvm_extern.h: revision 1.153 sys/uvm/uvm_glue.c: revision 1.136 sys/uvm/uvm_mmap.c: revision 1.128 usr.bin/systat/ps.c: revision 1.32 - - add new RLIMIT_AS (aka RLIMIT_VMEM) resource that limits the total address space available to processes. this limit exists in most other modern unix variants, and like most of them, our defaults are unlimited. remove the old mmap / rlimit.datasize hack. - - adds the VMCMD_STACK flag to all the stack-creation vmcmd callers. it is currently unused, but was added a few years ago. - - add a pair of new process size values to kinfo_proc2{}. one is the total size of the process memory map, and the other is the total size adjusted for unused stack space (since most processes have a lot of this...) - - patch sh, and csh to notice RLIMIT_AS. (in some cases, the alias RLIMIT_VMEM was already present and used if availble.) - - patch ps, top and systat to notice the new k_vm_vsize member of kinfo_proc2{}. - - update irix, svr4, svr4_32, linux and osf1 emulations to support this information. (freebsd could be done, but that it's best left as part of the full-update of compat/freebsd.) this addresses PR 7897. it also gives correct memory usage values, which have never been entirely correct (since mmap), and have been very incorrect since jemalloc() was enabled. tested on i386 and sparc64, build tested on several other platforms. thanks to many folks for feedback and testing but most espcially chuq and yamt for critical suggestions that lead to this patch not having a special ugliness i wasn't happy with anyway :-)
1.72.2.1	13-May-2009	jym	Sync with HEAD. Third (and last) commit. See http://mail-index.netbsd.org/source-changes/2009/05/13/msg221222.html
1.76.4.1	24-Jun-2012	riz	Pull up following revision(s) (requested by dholland in ticket #355): bin/ps/ps.c: revision 1.78 Push logic to convert a ttyname to a device number into its own function. Improve dealing with ptyfs by explicitly handling missing pts/%d entries, if the kernel supports the pts device (PR 40813).
1.76.2.3	22-May-2014	yamt	sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments")
1.76.2.2	23-May-2012	yamt	sync with head.
1.76.2.1	17-Apr-2012	yamt	sync with head
1.78.2.1	19-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.80.2.1	10-Aug-2014	tls	Rebase.
1.83.2.1	07-Jan-2017	pgoyette	Sync with HEAD. (Note that most of these changes are simply $NetBSD$ tag issues.)
1.88.6.1	03-Feb-2018	snj	Pull up following revision(s) (requested by kamil in ticket #515): bin/ps/ps.c: revision 1.89 Fix an unitialized memory read bug in ps(1) rawcpu of type int, is declared inside main(){} and it can be passed as uninitialized to setpinfo(). The setpinfo() function has a switch checking the value of rawcpu: if (!rawcpu) pi[i].pcpu /= 1.0 - exp(ki[i].p_swtime * log_ccpu); rawcpu is set to 1 with the command line argument "-C". -C Change the way the CPU percentage is calculated by using a "raw" CPU calculation that ignores "resident" time (this normally has no effect). Bug reproducible with an invocation: "ps u". It hides with "ps uC". Initialize rawcpu by default to 0, before the getopt(3) machinery. Detected with MSan running on NetBSD/amd64. Sponsored by <The NetBSD Foundation>
1.89.2.1	16-Apr-2018	pgoyette	Sync with HEAD, resolve some conflicts
1.91.2.3	21-Apr-2020	martin	Ooops, restore accidently removed files from merge mishap
1.91.2.2	21-Apr-2020	martin	Sync with HEAD
1.91.2.1	13-Apr-2020	martin	Mostly merge changes from HEAD upto 20200411
1.93.6.1	06-Jun-2021	cjep	sync with head
1.97.4.1	02-Aug-2025	perseant	Sync with HEAD
1.32	14-Sep-2021	christos	use emalloc and friends, add ktrace flag printing.
1.31	14-Sep-2021	christos	Provide symbolic printing of some keywords by capitalizing them.
1.30	10-Sep-2021	rillig	bin: remove unnecessary lint comment CONSTCOND Since 2021-01-31, lint no longer warns about 'do ... while (0)'. No functional change.
1.29	02-Dec-2016	christos	branches: 1.29.14; provide a tree like display with -d, from FreeBSD
1.28	28-Nov-2016	rin	Calculate CPU usage (pcpu) once per process if it is required. This change significantly improves performance for slow machines when output is sorted by pcpu. ok martin
1.27	20-Apr-2014	dholland	branches: 1.27.6; Use an enum type for PRINTMODE vs. WIDTHMODE. Compiler output diffs have been checked.
1.26	02-Oct-2006	apb	branches: 1.26.40; 1.26.46; 1.26.60; * When all columns are given null customised headers, the blank header line is not printed at all. This is specified in P1003.1-2004 (SUSv3), and is useful. * Customised headers may contain embedded space, commas and equals signs. To specify multiple customised headers, use multiple -o or -O options. This is specified (for "-o", not for "-O") in P1003.1-2004 (SUSv3), and is useful. * When a column is given a null (blank) customised header, it keeps its default minimum width. This is specified in P1003.1-2004 (SUSv3), and seems harmless. * Fix a bug that made it impossible to print the same keyword multiple times, with different customised headers each time. (Previously, the last customised header was used for all instances of the keyword.) * Make the behaviour of "-O" more useful. The first -O option adds the default keywords only if there have not yet been any formatting options, and multiple -O options now insert their keywords in adjacent positions. Now {ps -j -O %cpu} is like {ps -j} with one extra column; Previously, it would have had all the columns implied by "-j", plus all the default columns, plus the extra column specified by "-O". * Convert from home-grown linked lists to SIMPLEQ lists. Discussed in tech-userlevel.
1.25	26-Jun-2005	christos	sprinkle a little const, and now everything compiles with WARNS=3
1.24	27-Mar-2004	simonb	Add support for the POSIX.2 "args" and "comm" keywords. "args" is just an alias for "command", and "comm" shows just argv[0] and not the whole argument list. Fix for part of PR standards/11224.
1.23	27-Mar-2004	simonb	#define<TAB>
1.22	27-Mar-2004	simonb	KNF, ANSFify, de-__P, unC++ify, white space nits.
1.21	07-Aug-2003	agc	Move UCB-licensed code from 4-clause to 3-clause licence. Patches provided by Joel Baker in PR 22249, verified by myself.
1.20	06-Mar-2003	dsl	- add keywords for utime, stime and ctime (output sss.ssssss if small) - fiddle with keyword table - mainly to keep width under 80 cols - add -k keylist so sort output - don't use logs to work out field width, get -MAXINT right - user defined headers can be 1 char (actually they can be zero length) so ?? in tty column isn't guaranteed to be wider than header - remove some long long casts (compiles on sparc64 still) - use kvm_openfiles(NULL, NULL, NULL, KVN_NO_FILES, ..) unless core file specified, (approved by christos)
1.19	18-Jan-2003	thorpej	Merge the nathanw_sa branch.
1.18	24-Apr-2002	nathanw	Since kinfo_proc2 has many values that are 64-bit, ps needs to know that they're 64-bit, and grab them out of memory appropriately. Otherwise, big-endian systems get the wrong end of the 64-bit value and lose. Keywords affected: inblk, majflt, minflt, msgrcv, msgsnd, nivcsw, nsigs, nswap, nvcsw, and oublk.
1.17	07-Jun-2000	simonb	branches: 1.17.4; Calculate field widths on the fly so that all columns line up nicely and make more effective use of screen real estate when some columns (eg USER and VSZ) didn't need the full default width.
1.16	26-May-2000	simonb	branches: 1.16.2; Use new sysctl/kvm interfaces. This will stop the "proc size mismatch" errors when internal kernel structures change size. Also remove the sgid bit - all live kernel data is accessed through the sysctl interface.
1.15	03-May-1999	mrg	oops, fix merge botch in previous..
1.14	03-May-1999	mrg	limit session to 6 chars. from Geoff Wing <gcw@pobox.com> and fixes his PR#7506
1.13	16-Apr-1999	christos	Add support for printing wide sigset_t properly.
1.12	02-Oct-1996	ws	Fix p_nice vs. NZERO code. Remove some unnecessary casts. Remove an unused time format field.
1.11	29-Sep-1995	cgd	add INT32 and UINT32 variable type specifiers. some of the variables that are printed are of fixed size.
1.10	15-Aug-1995	cgd	Kenneth Stailey pointed out that his previous fix was incorrect. RE and SL should be bounded at 127, not 99.
1.9	14-Aug-1995	cgd	as suggested in PR 1347, by Kenneth Stailey, make "RE" and "SL" fields show up as two digits, max, displaying "99" if > 99. allow any field with an unsigned value to be specified as printing that way (though right now it's only used for RE and SL, which are both unsigned longs). This fix is substantially different than that suggested in the PR.
1.8	18-May-1995	mycroft	Create and strvis(3) the argument and environment lists only as needed. Do not keep extra copies around.
1.7	08-May-1995	cgd	add the ability to understand and print INT and UINT-sized variables.
1.6	21-Mar-1995	cgd	convert to new RCS id conventions.
1.5	09-May-1994	cgd	clean up import
1.4	01-Aug-1993	mycroft	Add RCS identifiers.
1.3	23-Mar-1993	cgd	changed "Id" to "Header" for rcsids
1.2	22-Mar-1993	cgd	added rcs ids to all files
1.1	21-Mar-1993	cgd	branches: 1.1.1; Initial revision
1.1.1.2	09-May-1994	cgd	new ps, to match libkvm
1.1.1.1	21-Mar-1993	cgd	initial import of 386bsd-0.1 sources
1.16.2.1	22-Jun-2000	minoura	Sync w/ netbsd-1-5-base.
1.17.4.2	24-Apr-2002	nathanw	Parallel change to mainline: handle 64-bit values properly.
1.17.4.1	23-Apr-2002	nathanw	Add support for handling multi-LWP processes by selecting one LWP as "representative" of the process. Also add a -s option that prints a line for each LWP. While I'm here, remove the /proc fallback code.
1.26.60.1	10-Aug-2014	tls	Rebase.
1.26.46.1	19-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.26.40.1	22-May-2014	yamt	sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments")
1.27.6.1	07-Jan-2017	pgoyette	Sync with HEAD. (Note that most of these changes are simply $NetBSD$ tag issues.)
1.29.14.2	21-Apr-2020	martin	Ooops, restore accidently removed files from merge mishap
1.29.14.1	21-Apr-2020	martin	Sync with HEAD

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