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

Uncommitted

MT-LEVEL
See LOCKING in libproc(3LIB).

SEE ALSO

libproc(3LIB), Pstatus(3PROC), proc(5)

illumos May 11, 2016 illumos