proc(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | USAGE | EXIT STATUS | FILES | ATTRIBUTES | SUMMARY OF TRUSTED SOLARIS CHANGES | SEE ALSO

NAME

proc, pflags, pcred, pmap, pldd, psig, pstack, pfiles, pwdx, pstop, prun, pwait, ptree, ptime- Proc tools

SYNOPSIS

/usr/bin/pflags [-r] [pid| core...]
/usr/bin/pcred [pid| core...]
/usr/bin/pmap [-rxlF] [pid| core...]
/usr/bin/pldd [-F] [pid| core...]
/usr/bin/psig pid...
/usr/bin/pstack [-F] [pid| core...]
/usr/bin/pfiles [-F] pid...
/usr/bin/pwdx [-F] pid...
/usr/bin/pstop pid...
/usr/bin/prun pid...
/usr/bin/pwait [-v] pid...
/usr/bin/ptree [-a] [[pid| user]...]
/usr/bin/ptime command [arg...]

DESCRIPTION

The proc tools are utilities that exercise features of /proc (see proc(4)). Most of them take a list of process-ids (pid); those that do also accept /proc/nnn as a process-id, so the shell expansion /proc/* can be used to specify all processes in the system. Some of the proc tools can also be applied to core files (see core(4)); those that do accept a list of either process IDs or names of core files or both.

pflags

Print the /proc tracing flags, the pending and held signals, and other /proc status information for each lwp in each process.

pcred

Print the credentials (effective, real, saved UIDs and GIDs) of each process.

pmap

Print the address space map of each process.

pldd

List the dynamic libraries linked into each process, including shared objects explicitly attached using dlopen(3DL). See also ldd(1).

psig

List the signal actions of each process. See signal(3HEAD).

pstack

Print a hex+symbolic stack trace for each lwp in each process.

pfiles

Report fstat(2) and fcntl(2) information for all open files in each process.

pwdx

Print the current working directory of each process.

pstop

Stop each process (PR_REQUESTED stop).

prun

Set each process running (inverse of pstop).

pwait

Wait for all of the specified processes to terminate.

ptree

Print the process trees containing the specified pids or users, with child processes indented from their respective parent processes. An argument of all digits is taken to be a process-id, otherwise it is assumed to be a user login name. Default is all processes.

ptime

Time the command, like time(1), but using microstate accounting for reproducible precision. Unlike time(1), children of the command are not timed.

pattr

Get the viewable process attribute flags. See the pattr(1) man page for more information.

pclear

Get the process clearance. See the pclear(1) man page for more information.

plabel

Get the label of a process. See the plabel(1) man page for more information.

ppriv

Get the effective privileges of a process. See the ppriv(1) man page for more information.

pprivtest

Test the effective privilege set of a process. See the pprivtest(1) man page for more information.

OPTIONS

See the individual Trusted Solaris process manual pages for the options that they support. The following options are supported for Solaris process utilities:

-r

(pflags only) If the process is stopped, display its machine registers.

-r

(pmap only) Print the process' reserved addresses.

-x

(pmap only) Print resident/shared/private mapping details.

-l

(pmap only) Print unresolved dynamic linker map names.

-a

(ptree only) All; include children of process 0.

-v

(pwait only) Verbose; report terminations to standard output.

-F

Force; grab the target process even if another process has control.

USAGE

These proc tools stop their target processes while inspecting them and reporting the results: pfiles, pldd, pmap, and pstack. A process can do nothing while it is stopped. A process can do nothing while it is stopped. Thus, for example, if the X server is inspected by one of these proc tools running in a window under the X server's control, the whole window system can become deadlocked because the proc tool would be attempting to print its results to a window that cannot be refreshed. Logging in from from another system using rlogin(1) and killing the offending proc tool would clear up the deadlock in this case.

Caution should be exercised when using the -F flag. Imposing two controlling processes on one victim process can lead to chaos. Safety is assured only if the primary controlling process, typically a debugger, has stopped the victim process and the primary controlling process is doing nothing at the moment of application of the proc tool in question.

Some of the proc tools can also be applied to core files, as shown by the synopsis above. A core file is a snapshot of a process's state and is produced by the kernel prior to terminating a process with a signal or by the gcore(1) utility. Some of the proc tools may need to derive the name of the executable corresponding to the process which dumped core or the names of shared libraries associated with the process. These files are needed, for example, to provide symbol table information for pstack. If the proc tool in question is unable to locate the needed executable or shared library, some symbol information will be unavailable for display. Similarly, if a core file from one operating system release is examined on a different operating system release, the run-time link-editor debugging interface (librtld_db) may not be able to initialize. In this case, symbol information for shared libraries will not be available.

EXIT STATUS

The following exit values are returned:

0

Successful operation.

non-zero

An error has occurred.

FILES

/proc/*

Process files

/usr/proc/lib/*

proc tools supporting files

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Availability	SUNWtsu (32-bit)
	SUNWtsxu (64-bit)

SUMMARY OF TRUSTED SOLARIS CHANGES

The Trusted Solaris environment provides additional utilities for obtaining a process' security attributes. See their man pages for a full description: pattr(1), pclear(1), plabel(1), ppriv(1), and pprivtest(1).

SEE ALSO

Trusted Solaris 8 4/01 Reference Manual

pattr(1), pclear(1), plabel(1), ppriv(1), pprivtest(1), fcntl(2), fstat(2), proc(4)

SunOS 5.8 Reference Manual

ldd(1), ps(1), pwd(1), rlogin(1), time(1), truss(1), wait(1), dlopen(3DL), signal(3HEAD), core(4), attributes(5)

SunOS 5.8  Last Revised 20 Apr 2000

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | USAGE | EXIT STATUS | FILES | ATTRIBUTES | SUMMARY OF TRUSTED SOLARIS CHANGES | SEE ALSO