tapset::context.3stap man page

tapset::context — systemtap context tapset

Description

Context functions provide additional information about where an event occurred. These functions can provide information such as a backtrace to where the event occurred and the current register values for the processor.

print_regs

Print a register dump

See function::print_regs(3stap)
for details.

pp

Returns the active probe point

See function::pp(3stap)
for details.

ppfunc

Returns the function name parsed from pp()

See function::ppfunc(3stap)
for details.

probe_type

The low level probe handler type of the current probe.

See function::probe_type(3stap)
for details.

execname

Returns the execname of a target process (or group of processes)

See function::execname(3stap)
for details.

pid

Returns the ID of a target process

See function::pid(3stap)
for details.

ns_pid

Returns the ID of a target process as seen in a pid namespace

See function::ns_pid(3stap)
for details.

tid

Returns the thread ID of a target process

See function::tid(3stap)
for details.

ns_tid

Returns the thread ID of a target process as seen in a pid namespace

See function::ns_tid(3stap)
for details.

ppid

Returns the process ID of a target process's parent process

See function::ppid(3stap)
for details.

ns_ppid

Returns the process ID of a target process's parent process as seen in a pid namespace

See function::ns_ppid(3stap)
for details.

pgrp

Returns the process group ID of the current process

See function::pgrp(3stap)
for details.

ns_pgrp

Returns the process group ID of the current process as seen in a pid namespace

See function::ns_pgrp(3stap)
for details.

sid

Returns the session ID of the current process

See function::sid(3stap)
for details.

ns_sid

Returns the session ID of the current process as seen in a pid namespace

See function::ns_sid(3stap)
for details.

pexecname

Returns the execname of a target process's parent process

See function::pexecname(3stap)
for details.

gid

Returns the group ID of a target process

See function::gid(3stap)
for details.

ns_gid

Returns the group ID of a target process as seen in a user namespace

See function::ns_gid(3stap)
for details.

egid

Returns the effective gid of a target process

See function::egid(3stap)
for details.

ns_egid

Returns the effective gid of a target process as seen in a user namespace

See function::ns_egid(3stap)
for details.

uid

Returns the user ID of a target process

See function::uid(3stap)
for details.

ns_uid

Returns the user ID of a target process as seen in a user namespace

See function::ns_uid(3stap)
for details.

euid

Return the effective uid of a target process

See function::euid(3stap)
for details.

ns_euid

Returns the effective user ID of a target process as seen in a user namespace

See function::ns_euid(3stap)
for details.

is_myproc

Determines if the current probe point has occurred in the user's own process

See function::is_myproc(3stap)
for details.

cpuid

Returns the current cpu number

See function::cpuid(3stap)
for details.

cpu

Returns the current cpu number

See function::cpu(3stap)
for details.

registers_valid

Determines validity of register() and u_register() in current context

See function::registers_valid(3stap)
for details.

user_mode

Determines if probe point occurs in user-mode

See function::user_mode(3stap)
for details.

is_return

Whether the current probe context is a return probe

See function::is_return(3stap)
for details.

target

Return the process ID of the target process

See function::target(3stap)
for details.

module_name

The module name of the current script

See function::module_name(3stap)
for details.

module_size

The module size of the current script

See function::module_size(3stap)
for details.

stp_pid

The process id of the stapio process

See function::stp_pid(3stap)
for details.

remote_id

The index of this instance in a remote execution.

See function::remote_id(3stap)
for details.

remote_uri

The name of this instance in a remote execution.

See function::remote_uri(3stap)
for details.

stack_size

Return the size of the kernel stack

See function::stack_size(3stap)
for details.

stack_used

Returns the amount of kernel stack used

See function::stack_used(3stap)
for details.

stack_unused

Returns the amount of kernel stack currently available

See function::stack_unused(3stap)
for details.

addr

Address of the current probe point.

See function::addr(3stap)
for details.

uaddr

User space address of current running task

See function::uaddr(3stap)
for details.

cmdline_args

Fetch command line arguments from current process

See function::cmdline_args(3stap)
for details.

cmdline_arg

Fetch a command line argument

See function::cmdline_arg(3stap)
for details.

cmdline_str

Fetch all command line arguments from current process

See function::cmdline_str(3stap)
for details.

See Also

function::print_regs(3stap), function::pp(3stap), function::ppfunc(3stap), function::probe_type(3stap), function::execname(3stap), function::pid(3stap), function::ns_pid(3stap), function::tid(3stap), function::ns_tid(3stap), function::ppid(3stap), function::ns_ppid(3stap), function::pgrp(3stap), function::ns_pgrp(3stap), function::sid(3stap), function::ns_sid(3stap), function::pexecname(3stap), function::gid(3stap), function::ns_gid(3stap), function::egid(3stap), function::ns_egid(3stap), function::uid(3stap), function::ns_uid(3stap), function::euid(3stap), function::ns_euid(3stap), function::is_myproc(3stap), function::cpuid(3stap), function::cpu(3stap), function::registers_valid(3stap), function::user_mode(3stap), function::is_return(3stap), function::target(3stap), function::module_name(3stap), function::module_size(3stap), function::stp_pid(3stap), function::remote_id(3stap), function::remote_uri(3stap), function::stack_size(3stap), function::stack_used(3stap), function::stack_unused(3stap), function::addr(3stap), function::uaddr(3stap), function::cmdline_args(3stap), function::cmdline_arg(3stap), function::cmdline_str(3stap), stap(1), stapprobes(3stap)

Info

March 2016 SystemTap Tapset Reference