diff options
| -rw-r--r-- | lib/libc/sys/kqueue.2 | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/lib/libc/sys/kqueue.2 b/lib/libc/sys/kqueue.2 index 6ae79143d621..ed3a8adfa730 100644 --- a/lib/libc/sys/kqueue.2 +++ b/lib/libc/sys/kqueue.2 @@ -388,20 +388,25 @@ The process has called .It NOTE_EXEC The process has executed a new process via .Xr execve 2 -or similar call. +or a similar call. .It NOTE_TRACK Follow a process across .Fn fork calls. -The parent process will return with NOTE_TRACK set in the +The parent process registers a new kevent to monitor the child process +using the same .Va fflags -field, while the child process will return with NOTE_CHILD set in +as the original event. +The child process will signal an event with NOTE_CHILD set in .Va fflags and the parent PID in .Va data . -.It NOTE_TRACKERR -This flag is returned if the system was unable to attach an event to -the child process, usually due to resource limitations. +.Pp +If the parent process fails to register a new kevent +.Pq usually due to resource limitations , +it will signal an event with NOTE_TRACKERR set in +.Va fflags , +and the child process will not signal a NOTE_CHILD event. .El .Pp On return, |