General Programming Concepts: Writing and Debugging Programs

Trace Hook IDs: 152 through 19C

The following trace hook IDs are stored in the /usr/include/sys/trchkid.h file.

152 : HKWD SYSC LOCKF

This event is recorded by the lockf subroutine.

Recorded Data

Event:

lockf filename fd=value unlock value bytes
lockf filename fd=value lock_wait value bytes
lockf filename fd=value lock_busy value bytes
filename	File path name
fd=value	File descriptor
value bytes	Number of bytes.

154 : HKWD SYSC LSEEK

This event is recorded by the lseek subroutine.

Recorded Data

Event:

lseek fd=file descriptor to offset
lseek fd=file descriptor relative offset
lseek fd=file descriptor relative offset from end of file
lseek fd=file descriptor offset=offset whence=whence (whence)
fd=file descriptor	File descriptor
offset=offset	Offset into file
relative offset	Offset into file
whence=whence	Value Meaning 0 From beginning 1 From current offset 2 From end of file.

15F : HKWD SYSC PIPE

This event is recorded by the pipe subroutine.

Recorded Data

pipe read_fd=value write_fd=value
read_fd=value	Read file descriptor
write_fd=value	Write file descriptor.

160 : HKWD SYSC PLOCK

This event is recorded by the pblock subroutine.

Recorded Data

Event:

pblock process UNLOCK
pblock process PROCESS LOCK
pblock process TEXT SEGMENT LOCK
pblock process DATA SEGMENT DATLOCK	*process* Process name.

169 : HKWD SYSC SBREAK

This event is recorded by the sbreak subroutine.

Recorded Data

sbreak new dmax is value

new dmax is value: Value of dmax.

16E : HKWD SYSC SETPGRP

This event is recorded by the setpgid subroutine.

Recorded Data

setpgid pid=value pgrp=value
pid=value	Process ID
pgrp=value	Process group.

16F : HKWD SYSC SETPRIO

This event is recorded by the sbreak subroutine.

Recorded Data

SBREAK SUBROUTINE hookdata data

hookdata data: The data recorded for this event is printed in hexadecimal.

180 : HKWD SYSC SIGACTION

This event is recorded by the sigaction subroutine.

Recorded Data

sigaction signal value mask=value

signal value: Signal number and name
mask=value: sigaction mask.

181 : HKWD SYSC SIGCLEANUP

This event is recorded by the sigcleanup subroutine.

Recorded Data

SIGCLEANUP

18E : HKWD SYSC TIMES

This event is recorded by the times subroutine.

Recorded Data

TIMES subroutine times u=value s=value cu=value cs=value (ticks)

u=value: The CPU time (in ticks) used while executing instructions in the user space of the calling process
s=value: The CPU time (in ticks) used by the system on behalf of the calling process
cu=value: The CPU time (in ticks) used while executing instructions in the user space of child processes of the calling process
cs=value: The CPU time (in ticks) used by the system on behalf of child processes of the calling processes.

18F : HKWD SYSC ULIMIT

This event is recorded by the ulimit subroutine.

Recorded Data

Event:

ulimit get fsize
ulimit set fsize to newlimit
ulimit get data limit
ulimit set data limit to newlimit
ulimit get stack
ulimit set stack limit to newlimit
ulimit get RAWDIR compatibility mode (REALDIR)
ulimit clear RAWDIR compatibility mode (REALDIR)
ulimit set RAWDIR compatibility mode (REALDIR)
ulimit get TRUNCATE compatibility mode (SYSVLOOKUP)
ulimit clear TRUNCATE compatibility mode (SYSVLOOKUP)
ulimit set TRUNCATE compatibility mode (SYSVLOOKUP)

195 : HKWD SYSC USRINFO

This event is recorded by the usrinfo subroutine.

Recorded Data

usrinfo

19B : HKWD SYSC WAIT

This event is recorded by the wait subroutine.

Recorded Data

wait rv=value pflag=value wstat=value

rv=value: Value of the rv argument
pflag=value: Wait operation
wstat=value: Returned status.