Psetsysentry,
Psetsysexit —
set system call tracing flags
Process Control Library (libproc, -lproc)
#include
<libproc.h>
void
Psetsysentry(
struct
ps_prochandle *P,
const sysset_t *set);
void
Psetsysexit(
struct
ps_prochandle *P,
const sysset_t *set);
The
Psetsysentry() and
Psetsysexit() set the system call entry and
exit tracing flags respectively in the process handle
P to
set.
The call to
Psetsysentry() or
Psetsysexit() replaces the corresponding
set of system call tracing flags entirely with the new set. The system call
entry tracing flags cause a thread to stop on entry to the system call and the
exit tracing flags cause a thread to stop on return from the system call,
before control returns back to the user land process. For more information on
the state of the thread and for information on manipulating the
sysset_t, see
proc(4).
Note that only active processes may have their system call tracing flags
updated. Process handles that refer to core files, zombie processes, and files
do not have fault tracing flags and this function is a no-op on them.
Uncommitted
See
LOCKING in
libproc(3LIB).
Intro(2),
libproc(3LIB),
proc(4)