Add pargs, penv, pwdx commands and aliases to procstat(1).

Intent is to mimic Solaris commands with the same names.

Submitted by:	Juraj Lutter <[email protected]>
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D26310

usr.bin/procstat/Makefile

@@ -13,15 +13,25 @@ SRCS=	procstat.c		\
 	procstat_cs.c		\
 	procstat_files.c	\
 	procstat_kstack.c	\
+	procstat_penv.c		\
 	procstat_ptlwpinfo.c	\
+	procstat_pwdx.c		\
 	procstat_rlimit.c	\
 	procstat_rusage.c	\
 	procstat_sigs.c		\
 	procstat_threads.c	\
 	procstat_vm.c
 
+MLINKS+=	procstat.1 pargs.1
+MLINKS+=	procstat.1 penv.1
+MLINKS+=	procstat.1 pwdx.1
+
 LIBADD+=	procstat xo util sbuf
 
+LINKS+=		${BINDIR}/procstat ${BINDIR}/pargs
+LINKS+=		${BINDIR}/procstat ${BINDIR}/penv
+LINKS+=		${BINDIR}/procstat ${BINDIR}/pwdx
+
 HAS_TESTS=
 SUBDIR.${MK_TESTS}+= tests
 

usr.bin/procstat/procstat.1

@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd March 4, 2019
+.Dd September 14, 2020
 .Dt PROCSTAT 1
 .Os
 .Sh NAME
@@ -102,6 +102,15 @@
 .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
@@ -112,6 +121,17 @@ 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
@@ -121,7 +141,8 @@ See
 .Xr xo_parse_args 3
 for details on command line arguments.
 .Pp
-The following commands are available:
+The following commands are available for
+.Nm :
 .Bl -tag -width indent
 .It Ar basic
 Print basic process statistics (this is the default).
@@ -196,6 +217,12 @@ Display thread information for the process.
 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
@@ -430,7 +457,7 @@ process signal disposition details, three symbols
 if signal is pending in the global process queue; - otherwise.
 .It I
 if signal delivery disposition is
-.Dv SIG_IGN;
+.Dv SIG_IGN ;
 - otherwise.
 .It C
 if the signal will be caught; - otherwise.
@@ -711,6 +738,10 @@ support was added by
 .An -nosplit
 Allan Jude
 .Aq Mt [email protected] .
+.br
+.An Juraj Lutter
+.Aq Mt [email protected]
+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.