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fix wait after vfork return error

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vfork use waitpid hang father process,
but waitpid release child processs information by default.
So when user call wait, it return errno 10.

Signed-off-by: yangyalei <yangyalei@xiaomi.com>
This commit is contained in:
yangyalei 2023-08-16 11:45:04 +08:00 • committed by Petro Karashchenko
parent eba2f163ed
commit fd776e8cee
4 changed files with 11 additions and 8 deletions
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2
include/nuttx/sched.h
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@ -1456,7 +1456,7 @@ void nxsched_get_stateinfo(FAR struct tcb_s *tcb, FAR char *state,
* Input Parameters:
* pid - The task ID of the thread to waid for
* stat_loc - The location to return the exit status
* options - ignored
* options - Modifiable behavior, see sys/wait.h.
*
* Returned Value:
* If nxsched_waitpid() returns because the status of a child process is