Author: hrs
Date: Thu Aug 8 17:20:09 2013
New Revision: 254096
URL: http://svnweb.freebsd.org/changeset/base/254096
Log:
MFC 253887,253977:
- Use pget(PGET_CANDEBUG | PGET_NOTWEXIT) to determine if the specified
PID is valid for monitoring in FILEMON_SET_PID ioctl.
- Set the monitored PID to -1 when the process exits.
Suggested by: jilles
Tested by: sjg
Modified:
stable/9/sys/dev/filemon/filemon.c
stable/9/sys/dev/filemon/filemon_wrapper.c
Directory Properties:
stable/9/sys/ (props changed)
Changes in other areas also in this revision:
Modified:
stable/8/sys/dev/filemon/filemon.c
stable/8/sys/dev/filemon/filemon_wrapper.c
Directory Properties:
stable/8/sys/ (props changed)
Modified: stable/9/sys/dev/filemon/filemon.c
==============================================================================
--- stable/9/sys/dev/filemon/filemon.c Thu Aug 8 16:09:20 2013
(r254095)
+++ stable/9/sys/dev/filemon/filemon.c Thu Aug 8 17:20:09 2013
(r254096)
@@ -180,6 +180,7 @@ filemon_ioctl(struct cdev *dev, u_long c
{
int error = 0;
struct filemon *filemon;
+ struct proc *p;
#if __FreeBSD_version < 701000
filemon = dev->si_drv1;
@@ -202,7 +203,12 @@ filemon_ioctl(struct cdev *dev, u_long c
/* Set the monitored process ID. */
case FILEMON_SET_PID:
- filemon->pid = *((pid_t *) data);
+ error = pget(*((pid_t *)data), PGET_CANDEBUG | PGET_NOTWEXIT,
+ &p);
+ if (error == 0) {
+ filemon->pid = p->p_pid;
+ PROC_UNLOCK(p);
+ }
break;
default:
Modified: stable/9/sys/dev/filemon/filemon_wrapper.c
==============================================================================
--- stable/9/sys/dev/filemon/filemon_wrapper.c Thu Aug 8 16:09:20 2013
(r254095)
+++ stable/9/sys/dev/filemon/filemon_wrapper.c Thu Aug 8 17:20:09 2013
(r254096)
@@ -574,6 +574,7 @@ filemon_wrapper_sys_exit(struct thread *
(uintmax_t)now.tv_sec, (uintmax_t)now.tv_usec);
filemon_output(filemon, filemon->msgbufr, len);
+ filemon->pid = -1;
}
/* Unlock the found filemon structure. */
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