Index: head/usr.bin/procstat/procstat.1
===================================================================
--- head/usr.bin/procstat/procstat.1	(revision 366448)
+++ head/usr.bin/procstat/procstat.1	(revision 366449)
@@ -1,753 +1,798 @@
 .\"-
 .\" Copyright (c) 2007-2009 Robert N. M. Watson
 .\" All rights reserved.
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
 .\" are met:
 .\" 1. Redistributions of source code must retain the above copyright
 .\"    notice, this list of conditions and the following disclaimer.
 .\" 2. Redistributions in binary form must reproduce the above copyright
 .\"    notice, this list of conditions and the following disclaimer in the
 .\"    documentation and/or other materials provided with the distribution.
 .\"
 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 14, 2020
+.Dd October 5, 2020
 .Dt PROCSTAT 1
 .Os
 .Sh NAME
 .Nm procstat
 .Nd get detailed process information
 .Sh SYNOPSIS
 .Nm
 .Op Fl -libxo
 .Op Fl h
 .Op Fl M Ar core
 .Op Fl N Ar system
 .Op Fl w Ar interval
 .Ar command
 .Op Ar pid ... | Ar core ...
 .Nm
 .Op Fl -libxo
 .Fl a
 .Op Fl h
 .Op Fl M Ar core
 .Op Fl N Ar system
 .Op Fl w Ar interval
 .Ar command
 .Nm
 .Op Fl -libxo
 .Op Fl h
 .Op Fl M Ar core
 .Op Fl N Ar system
 .Op Fl w Ar interval
 .Oo
 .Fl b |
 .Fl c |
 .Fl e |
 .Fl f Oo Fl C Oc |
 .Fl i Oo Fl n Oc |
 .Fl j Oo Fl n Oc |
 .Fl k Oo Fl k Oc |
 .Fl l |
 .Fl r Oo Fl H Oc |
 .Fl s |
 .Fl S |
 .Fl t |
 .Fl v |
 .Fl x
 .Oc
 .Op Ar pid ... | Ar core ...
 .Nm
 .Op Fl -libxo
 .Fl a
 .Op Fl h
 .Op Fl M Ar core
 .Op Fl N Ar system
 .Op Fl w Ar interval
 .Oo
 .Fl b |
 .Fl c |
 .Fl e |
 .Fl f Oo Fl C Oc |
 .Fl i Oo Fl n Oc |
 .Fl j Oo Fl n Oc |
 .Fl k Oo Fl k Oc |
 .Fl l |
 .Fl r Oo Fl H Oc |
 .Fl s |
 .Fl S |
 .Fl t |
 .Fl v |
 .Fl x
 .Oc
 .Nm
 .Op Fl -libxo
 .Fl L
 .Op Fl h
 .Op Fl M Ar core
 .Op Fl N Ar system
 .Op Fl w Ar interval
 .Ar core ...
 .Nm pargs
 .Op Fl -libxo
 .Ar pid ...
 .Nm penv
 .Op Fl -libxo
 .Ar pid ...
 .Nm pwdx
 .Op Fl -libxo
 .Ar pid ...
 .Sh DESCRIPTION
 .Nm
 utility displays detailed information about the processes identified by the
 .Ar pid
 arguments, or if the
 .Fl a
 flag is used, all processes.
 It can also display information extracted from a process core file, if
 the core file is specified as the argument.
 .Pp
 The
 .Nm pargs ,
 .Nm penv
 and
 .Nm pwdx
 utilities display the arguments, environment, and current working directory,
 respectively of the process specified by
 .Ar pid
 argument.
 They mimic the behavior of Solaris utilities of the same names.
 .Pp
 If the
 .Fl -libxo
 flag is specified the output is generated via
 .Xr libxo 3
 in a selection of different human and machine readable formats.
 See
 .Xr xo_parse_args 3
 for details on command line arguments.
 .Pp
 The following commands are available for
 .Nm :
 .Bl -tag -width indent
 .It Ar basic
 Print basic process statistics (this is the default).
 .It Ar binary | Fl b
 Display binary information for the process.
 .Pp
 Substring commands are accepted.
 .It Ar argument(s) | Fl c
 Display command line arguments for the process.
 .Pp
 Substring commands are accepted.
 .It Ar environment | Fl e
 Display environment variables for the process.
 .Pp
 Substring commands are accepted.
 .It Ar file(s) | Ar fd(s) | Fl f
 Display file descriptor information for the process.
 .Pp
 If the
 .Fl C
 subcommand flag is used then additional capability information is printed.
 .It Ar signal(s) | Fl i
 Display signal pending and disposition information for the process.
 .Pp
 If the
 .Fl n
 subcommand option is used, the signal numbers are shown instead of signal
 names.
 .Pp
 Substring commands are accepted.
 .It Ar tsignal(s) | Fl j
 Display signal pending and blocked information for the process's threads.
 .Pp
 If the
 .Fl n
 subcommand option is used, the signal numbers are shown instead of signal
 names.
 .Pp
 Substring commands are accepted.
 .It Ar kstack | Fl k
 Display the stacks of kernel threads in the process, excluding stacks of
 threads currently running on a CPU and threads with stacks swapped to disk.
 .Pp
 If the
 .Fl v
 subcommand option is used (or the command flag is repeated), function
 offsets as well as function names are printed.
 .It Ar rlimit | Fl l
 Display resource limits for the process.
 .It Ar ptlwpinfo | Fl L
 Display LWP info for the process pertaining to its signal driven exit.
 .It Ar rusage | Fl r
 Display resource usage information for the process.
 .Pp
 If the
 .Fl v
 .Pq or Fl H
 subcommand flag
 is used then per-thread statistics are printed, rather than per-process
 statistics.
 The second field in the table will list the thread ID to which the row of
 information corresponds.
 .It Ar credential(s) | Fl s
 Display security credential information for the process.
 .Pp
 Substring commands are accepted.
 .It Ar cpuset | Ar cs | Fl S
 Display the cpuset information for the thread.
 .It Ar thread(s) | Fl t
 Display thread information for the process.
 .It Ar vm | Fl v
 Display virtual memory mappings for the process.
 .It Ar auxv | Fl x
 Display ELF auxiliary vector for the process.
 .It Ar pargs
 Display arguments for the process.
 .It Ar penv
 Display environment variables for the process.
 .It Ar pwdx
 Display current working directory for the process.
 .El
 .Pp
 All options generate output in the format of a table, the first field of
 which is the process ID to which the row of information corresponds.
 The
 .Fl h
 flag may be used to suppress table headers.
 .Pp
 The
 .Fl w
 flag may be used to specify a wait interval at which to repeat the printing
 of the requested process information.
 If the
 .Fl w
 flag is not specified, the output will not repeat.
 .Pp
 Information for VM, file descriptor, and cpuset options is available
 only to the owner of a process or the superuser.
 A cpuset value displayed as -1 means that the information is either invalid
 or not available.
 .Ss Binary Information
 Display the process ID, command, and path to the process binary:
 .Pp
 .Bl -tag -width indent -compact
 .It PID
 process ID
 .It COMM
 command
 .It OSREL
 osreldate for process binary
 .It PATH
 path to process binary (if available)
 .El
 .Ss Command Line Arguments
 Display the process ID, command, and command line arguments:
 .Pp
 .Bl -tag -width indent -compact
 .It PID
 process ID
 .It COMM
 command
 .It ARGS
 command line arguments (if available)
 .El
 .Ss Environment Variables
 Display the process ID, command, and environment variables:
 .Pp
 .Bl -tag -width "ENVIRONMENT" -compact
 .It PID
 process ID
 .It COMM
 command
 .It ENVIRONMENT
 environment variables (if available)
 .El
 .Ss File Descriptors
 Display detailed information about each file descriptor referenced by a
 process, including the process ID, command, file descriptor number, and
 per-file descriptor object information, such as object type and file system
 path.
 By default, the following information will be printed:
 .Pp
 .Bl -tag -width indent -compact
 .It PID
 process ID
 .It COMM
 command
 .It FD
 file descriptor number or cwd/root/jail
 .It T
 file descriptor type
 .It V
 vnode type
 .It FLAGS
 file descriptor flags
 .It REF
 file descriptor reference count
 .It OFFSET
 file descriptor offset
 .It PRO
 network protocol
 .It NAME
 file path or socket addresses (if available)
 .El
 .Pp
 The following file descriptor types may be displayed:
 .Pp
 .Bl -tag -width X -compact
 .It c
 crypto
 .It e
 POSIX semaphore
 .It f
 fifo
 .It h
 shared memory
 .It k
 kqueue
 .It m
 message queue
 .It P
 process descriptor
 .It p
 pipe
 .It s
 socket
 .It t
 pseudo-terminal master
 .It v
 vnode
 .El
 .Pp
 The following vnode types may be displayed:
 .Pp
 .Bl -tag -width X -compact
 .It -
 not a vnode
 .It b
 block device
 .It c
 character device
 .It d
 directory
 .It f
 fifo
 .It l
 symbolic link
 .It r
 regular file
 .It s
 socket
 .It x
 revoked device
 .El
 .Pp
 The following file descriptor flags may be displayed:
 .Pp
 .Bl -tag -width X -compact
 .It r
 read
 .It w
 write
 .It a
 append
 .It s
 async
 .It f
 fsync
 .It n
 non-blocking
 .It d
 direct I/O
 .It l
 lock held
 .El
 .Pp
 If the
 .Fl C
 flag is specified, the vnode type, reference count, and offset fields will be
 omitted, and a new capabilities field will be included listing capabilities,
 as described in
 .Xr cap_rights_limit 2 ,
 present for each capability descriptor.
 .Pp
 The following network protocols may be displayed (grouped by address family):
 .Pp
 .Dv AF_INET ,
 .Dv AF_INET6
 .Pp
 .Bl -tag -width indent -compact
 .It ICM
 .Dv IPPROTO_ICMP ;
 see
 .Xr icmp 4 .
 .It IPD
 .Dv IPPROTO_DIVERT ;
 see
 .Xr divert 4 .
 .It IP?
 unknown protocol.
 .It RAW
 .Dv IPPROTO_RAW ;
 see
 .Xr ip 4 .
 .It SCT
 .Dv IPPROTO_SCTP ;
 see
 .Xr sctp 4 .
 .It TCP
 .Dv IPPROTO_TCP ;
 see
 .Xr tcp 4 .
 .It UDP
 .Dv IPPROTO_UDP ;
 see
 .Xr udp 4 .
 .El
 .Pp
 .Dv AF_LOCAL
 .Pp
 .Bl -tag -width indent -compact
 .It UDD
 .Dv IPPROTO_UDP ;
 see
 .Xr udp 4 .
 .It UDS
 .Dv IPPROTO_TCP ;
 see
 .Xr tcp 4 .
 .It UD?
 unknown protocol.
 .El
 .Pp
 .Bl -tag -width indent -compact
 .It ?
 unknown address family.
 .El
 .Ss Signal Disposition Information
 Display signal pending and disposition for a process:
 .Pp
 .Bl -tag -width indent -compact
 .It PID
 process ID
 .It COMM
 command
 .It SIG
 signal name
 .It FLAGS
 process signal disposition details, three symbols
 .Bl -tag -width X -compact
 .It P
 if signal is pending in the global process queue; - otherwise.
 .It I
 if signal delivery disposition is
 .Dv SIG_IGN ;
 - otherwise.
 .It C
 if the signal will be caught; - otherwise.
 .El
 .El
 .Pp
 If
 .Fl n
 switch is given, the signal numbers are shown instead of signal names.
 .Ss Thread Signal Information
 Display signal pending and blocked for a process's threads:
 .Pp
 .Bl -tag -width indent -compact
 .It PID
 process ID
 .It TID
 thread ID
 .It COMM
 command
 .It SIG
 signal name
 .It FLAGS
 thread signal delivery status, two symbols
 .Bl -tag -width X -compact
 .It P
 if signal is pending for the thread, - otherwise
 .It B
 if signal is blocked in the thread signal mask, - if not blocked
 .El
 .El
 .Pp
 The
 .Fl n
 switch has the same effect as for the
 .Fl i
 switch: the signal numbers are shown instead of signal names.
 .Ss Kernel Thread Stacks
 Display kernel thread stacks for a process, allowing further interpretation
 of thread wait channels.
 If the
 .Fl k
 flag is repeated, function offsets, not just function names, are printed.
 .Pp
 This feature requires
 .Cd "options STACK"
 or
 .Cd "options DDB"
 to be compiled into the kernel.
 .Pp
 .Bl -tag -width indent -compact
 .It PID
 process ID
 .It TID
 thread ID
 .It COMM
 command
 .It TDNAME
 thread name
 .It KSTACK
 kernel thread call stack
 .El
 .Ss Resource Limits
 Display resource limits for a process:
 .Pp
 .Bl -tag -width indent -compact
 .It PID
 process ID
 .It COMM
 command
 .It RLIMIT
 resource limit name
 .It SOFT
 soft limit
 .It HARD
 hard limit
 .El
 .Ss Resource Usage
 Display resource usage for a process.
 If the
 .Fl H
 flag is specified,
 resource usage for individual threads is displayed instead.
 .Pp
 .Bl -tag -width "RESOURCE" -compact
 .It PID
 process ID
 .It TID
 thread ID
 .Po
 if
 .Fl H
 is specified
 .Pc
 .It COMM
 command
 .It RESOURCE
 resource name
 .It VALUE
 current usage
 .El
 .Ss Security Credentials
 Display process credential information:
 .Pp
 .Bl -tag -width indent -compact
 .It PID
 process ID
 .It COMM
 command
 .It EUID
 effective user ID
 .It RUID
 real user ID
 .It SVUID
 saved user ID
 .It EGID
 effective group ID
 .It RGID
 real group ID
 .It SVGID
 saved group ID
 .It UMASK
 file creation mode mask
 .It FLAGS
 credential flags
 .It GROUPS
 group set
 .El
 .Pp
 The following credential flags may be displayed:
 .Pp
 .Bl -tag -width X -compact
 .It C
 capability mode
 .El
 .Ss Thread Information
 Display per-thread information, including process ID, per-thread ID, name,
 CPU, and execution state:
 .Pp
 .Bl -tag -width indent -compact
 .It PID
 process ID
 .It TID
 thread ID
 .It COMM
 command
 .It TDNAME
 thread name
 .It CPU
 current or most recent CPU run on
 .It PRI
 thread priority
 .It STATE
 thread state
 .It WCHAN
 thread wait channel
 .El
 .Ss Virtual Memory Mappings
 Display process virtual memory mappings, including addresses, mapping
 meta-data, and mapped object information:
 .Pp
 .Bl -tag -width indent -compact
 .It PID
 process ID
 .It START
 starting address of mapping
 .It END
 ending address of mapping
 .It PRT
 protection flags
 .It RES
 resident pages
 .It PRES
 private resident pages
 .It REF
 reference count
 .It SHD
 shadow page count
 .It FLAG
 mapping flags
 .It TP
 VM object type
 .El
 .Pp
 The following protection flags may be displayed:
 .Pp
 .Bl -tag -width X -compact
 .It r
 read
 .It w
 write
 .It x
 execute
 .El
 .Pp
 The following VM object types may be displayed:
 .Pp
 .Bl -tag -width XX -compact
 .It --
 none
 .It dd
 dead
 .It df
 default
 .It dv
 device
 .It md
 device with managed pages
 .Pq GEM/TTM
 .It ph
 physical
 .It sg
 scatter/gather
 .It sw
 swap
 .It vn
 vnode
 .El
 .Pp
 The following mapping flags may be displayed:
 .Pp
 .Bl -tag -width X -compact
 .It C
 copy-on-write
 .It N
 needs copy
 .It S
 one or more superpage mappings are used
 .It D
 grows down (top-down stack)
 .It U
 grows up (bottom-up stack)
 .It W
 pages in this range are locked by
 .Xr mlock 2
 or
 .Xr mlockall 2
 .El
 .Ss ELF Auxiliary Vector
 Display ELF auxiliary vector values:
 .Pp
 .Bl -tag -width indent -compact
 .It PID
 process ID
 .It COMM
 command
 .It AUXV
 auxiliary vector name
 .It VALUE
 auxiliary vector value
 .El
 .Sh EXIT STATUS
 .Ex -std
+.Sh EXAMPLES
+Show binary information about the current shell:
+.Bd -literal -offset indent
+$ procstat binary $$
+  PID COMM                OSREL PATH
+46620 bash              1201000 /usr/local/bin/bash
+.Ed
+.Pp
+Same as above but showing information about open file descriptors:
+.Bd -literal -offset indent
+$ procstat files $$
+  PID COMM                FD T V FLAGS    REF  OFFSET PRO NAME
+46620 bash              text v r r-------   -       - -   /usr/local/bin/bash
+46620 bash              ctty v c rw------   -       - -   /dev/pts/12
+46620 bash               cwd v d r-------   -       - -   /tmp
+46620 bash              root v d r-------   -       - -   /
+46620 bash                 0 v c rw------   7  372071 -   /dev/pts/12
+46620 bash                 1 v c rw------   7  372071 -   /dev/pts/12
+46620 bash                 2 v c rw------   7  372071 -   /dev/pts/12
+46620 bash               255 v c rw------   7  372071 -   /dev/pts/12
+.Ed
+.Pp
+Show the arguments used to launch
+.Xr init 8 :
+.Bd -literal -offset indent
+$ procstat arguments 1
+  PID COMM             ARGS
+    1 init             /sbin/init --
+.Ed
+.Pp
+Extract binary information from a core dump:
+.Bd -literal -offset indent
+$ procstat binary core.36642
+  PID COMM                OSREL PATH
+36642 top               1201000 /usr/bin/top
+.Ed
+.Pp
+Trying to extract information from a core file generated in a different major
+.Fx
+version might show an error like this:
+.Bd -literal -offset indent
+$ procstat mplayer.core
+procstat: kinfo_proc structure size mismatch
+procstat: procstat_getprocs()
+.Ed
 .Sh SEE ALSO
 .Xr fstat 1 ,
 .Xr ps 1 ,
 .Xr sockstat 1 ,
 .Xr cap_enter 2 ,
 .Xr cap_rights_limit 2 ,
 .Xr mlock 2 ,
 .Xr mlockall 2 ,
 .Xr libprocstat 3 ,
 .Xr libxo 3 ,
 .Xr signal 3 ,
 .Xr xo_parse_args 3 ,
 .Xr ddb 4 ,
 .Xr divert 4 ,
 .Xr icmp 4 ,
 .Xr ip 4 ,
 .Xr sctp 4 ,
 .Xr tcp 4 ,
 .Xr udp 4 ,
 .Xr stack 9
 .Sh AUTHORS
 .An Robert N M Watson Aq Mt rwatson@FreeBSD.org .
 .br
 .Xr libxo 3
 support was added by
 .An -nosplit
 Allan Jude
 .Aq Mt allanjude@FreeBSD.org .
 .br
 .An Juraj Lutter
 .Aq Mt juraj@lutter.sk
 added the pargs, penv and pwdx functionality.
 .Sh BUGS
 The display of open file or memory mapping pathnames is implemented using the
 kernel's name cache.
 If a file system does not use the name cache, or the path to a file is not in
 the cache, a path will not be displayed.
 .Pp
 .Nm
 currently supports extracting data only from a live kernel, and not from
 kernel crash dumps.