PSETFLAGS(3PROC) Process Control Library Functions PSETFLAGS(3PROC)
NAME
Psetflags,
Punsetflags - set and unset process flags
LIBRARY
Process Control Library (libproc, -lproc)
SYNOPSIS
#include <libproc.h> int Psetflags(
struct ps_prochandle *P,
long flags);
int Punsetflags(
struct ps_prochandle *P,
long flags);
DESCRIPTION
The
Psetflags() and
Punsetflags() functions manipulate the process flags
for the process handle
P. The process flags determine how the process
behaves in the face of various actions. For example, setting the
PR_FORK flag indicates that the tracing flags of the process and the inherit-on-
fork mode should be set on children. A full list of the process flags is
available in the
PCSET section in
proc(5).
The
Psetflags() function sets the flags specified in
flags by doing a
bitwise-inclusive-OR with the previously set flags.
The
Punsetflags() function removes the flags specified in
flags from the
tracing flags of the process. Items not listed in
flags will remain.
To see the current set of flags active on the process, check the
pr_flags member of the
pstatus_t for the process. It can be obtained through the
Pstatus(3PROC) function.
Note, attempting to modify the process flags only works on active
processes. Attempting to call these functions of process handles
corresponding to core files, zombie processes, or files, will result in an
error.
RETURN VALUES
Upon successful completion, the
Psetflags() and
Punsetflags() functions
return
0. Otherwise,
-1 is returned and
errno is set to indicate the
error.
ERRORS
For a full list of possible errors see the
DIAGNOSTICS section in
proc(5).
INTERFACE STABILITY
UncommittedMT-LEVEL See
LOCKING in
libproc(3LIB).
SEE ALSO
libproc(3LIB),
Pstatus(3PROC),
proc(5)illumos May 11, 2016 illumos