| PSETFLAGS(3PROC) | Process Control Library Functions | PSETFLAGS(3PROC) |
Psetflags,
Punsetflags — set and unset
process flags
Process Control Library (libproc, -lproc)
#include
<libproc.h>
int
Psetflags(struct ps_prochandle
*P, long flags);
int
Punsetflags(struct ps_prochandle
*P, long flags);
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.
Upon successful completion, the
Psetflags() and
Punsetflags() functions return
0. Otherwise,
-1 is returned
and
errno is
set to indicate the error.
For a full list of possible errors see the DIAGNOSTICS section in proc(5).
See LOCKING in libproc(3LIB).
| May 11, 2016 | OmniOS |