NAME¶

DESCRIPTION¶

signal.send

 

Fires when a signal is sent to a process

 

Arguments:

 

sig
signal number

 

sig_name
a string representation of the signal

 

sig_pid
pid of the signal recipient process

 

pid_name
name of the signal recipient process

 

si_code
indicates the signal type

 

task
a task handle to the signal recipient

 

sinfo
the address of siginfo struct

 

shared
indicates whether this signal is shared by the thread group

 

send2queue
indicates whether this signal is sent to an existing sigqueue

 

name
name of the function used to send out this signal

 

signal.send.return

 

Fires when return from sending a signal

 

Arguments:

 

retstr
the return value

 

Return values for "__group_send_sig_info" and "specific_send_sig_info"

 

signal.checkperm

 

Fires when check permissions for sending the signal

 

Arguments:

 

sig
the number of the signal

 

sig_name
a string representation of the signal

 

sig_pid
pid of the signal recipient process

 

pid_name
name of the signal recipient process

 

si_code
indicates the signal type

 

task
a task handle to the signal recipient

 

sinfo
the address of siginfo struct

 

name
name of the probe point, is set to "signal.checkperm"

 

signal.checkperm.return

 

Fires when return from permissions check for sending a signal

 

Arguments:

 

retstr
the return value

 

name
name of the probe point, is set to "signal.checkperm"

 

signal.wakeup

 

Fires when wake up the process for new active signals

 

Arguments:

 

sig_pid
pid of the process to be woke up

 

pid_name
name of the process to be woke up

 

resume
indicate whether to wake up a task in STOPPED or TRACED state

 

state_mask
a string representation indicate the mask of task states that can be woken. Possible values are (TASK_INTERRUPTIBLE|TASK_STOPPED|TASK_TRACED) and TASK_INTERRUPTIBLE.

 

signal.check_ignored

 

Fires when check whether the signal is ignored or not

 

Arguments:

 

sig_pid
pid of the signal recipient process

 

pid_name
name of the signal recipient process

 

sig
the signal to be checked

 

sig_name
name of the signal

 

signal.check_ignored.return

 

Fires when return from signal.check_ignored

 

Arguments:

 

retstr
return value. 0 indicate the current signal isn't ignored.

 

signal.force_segv

 

Forces SIGSEGV when there are some issues while handling signals for the process

 

Arguments:

 

sig_pid
pid of the signal recipient process

 

pid_name
name of the signal recipient process

 

sig
the signal being handled

 

sig_name
name of this signal

 

signal.force_segv.return

 

Fires when return from signal.force_segv

 

Arguments:

 

retstr
return value. Always return 0

 

signal.syskill

 

Fires when sys_kill is called to send a signal to a process.

 

Arguments:

 

pid
pid of the recipient process

 

sig
the signal to be sent

 

signal.syskill.return

 

Fires when returning from sys_kill

 

signal.tgkill

 

Fires when sys_tgkill is called to send a signal to one specific thread

 

Arguments:

 

pid
pid of the recipient thread

 

tgid
thread group id which the target thread should have

 

sig
the signal to be sent

 

signal.tgkill.return

 

Fires when returning from sys_tgkill

 

signal.tkill

 

Fires when sys_tkill is called to send a signal to a single process.

 

Arguments:

 

pid
pid of the recipient process

 

sig
the signal to be sent

 

signal.tkill.return

 

Fires when returning from sys_tkill

 

signal.send_sig_queue

 

Fires when queue a signal to a process

 

Arguments:

 

sig
the signal to be queued

 

sig_name
name of this signal

 

sig_pid
pid of the process to which the signal is queued

 

pid_name
name of the process to which the signal is queued

 

sigqueue_addr
address of the signal queue

 

signal.send_sig_queue.return

 

Fires when return from signal.send_sig_queue

 

Arguments:

 

retstr
return value

 

signal.pending

 

Fires when examine the set of signals that are pending for delivery to the calling thread

 

Arguments:

 

sigset_add
address of user space sigset_t

 

sigset_size
sigset size

 

signal.pending.return

 

Fires when return from signal.pending

 

Arguments:

 

retstr
return value

 

signal.handle

 

Fires when invoking the signal handler

 

Arguments:

 

sig
signal number

 

sig_name
signal name

 

sinfo
address of siginfo struct

 

sig_code
the si_code of siginfo

 

ka_addr
Address of the k_sigaction struct associated with the signal

 

oldset_addr
Address of a bit mask array of blocked signals

 

sig_mode
indicates whether the signal is a User Mode or Kernel mode Signal

 

signal.handle.return

 

Fires when return from signal.handle

 

Arguments:

 

retstr
return value of handle_signal()

 

signal.do_action

 

Fires by calling thread to examine and change a signal action

 

Arguments:

 

sig
signal number

 

sigact_addr
address of the new sigaction struct associated with the signal

 

oldsigact_addr
address of a previous sigaction struct associated with the signal

 

sa_handler
the new handler of the signal

 

sa_mask
the new mask of the signal

 

signal.do_action.return

 

Fires when return from signal.do_action

 

Arguments:

 

retstr
return value of do_sigaction()

 

signal.procmask

 

Fires by calling thread to examine and change blocked signals

 

Arguments:

 

how
indicates how to change the blocked signals.
Possible values are:
SIG_BLOCK=0 for blocking signals
SIG_UNBLOCK=1 for unblocking signals
SIG_SETMASK=2 for setting the signal mask

 

sigset_addr
address of sigset_t to be set

 

oldsigset_addr
address of the old sigset_t

 

sigset
the actual sigset to be set

 

signal.procmask.return

 

Fires when return from signal.procmask

 

Arguments:

 

retstr
return value of sigprocmask()

 

signal.flush

 

Fires when flush all pending signals for a task

 

Arguments:

 

task
the task handler of the process

 

sig_pid
pid of the task

 

pid_name
name of the task

 

SEE ALSO¶