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Correct wait4 when the child is not found

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Make wait4 return -ECHILD when pid is specified and it's not found.
This commit is contained in:
Masamichi Takagi
2014-09-04 17:07:27 +09:00
parent fea02b0ece
commit a16c3170ef
1 changed files with 1 additions and 1 deletions
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2
kernel/syscall.c
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@@ -333,7 +333,7 @@ rescan:
ihk_mc_spinlock_unlock_noirq(&child_iter->lock); ihk_mc_spinlock_unlock_noirq(&child_iter->lock);
} }
if (empty) { if (empty || (!child && pid != -1)) {
ihk_mc_spinlock_unlock_noirq(&proc->ftn->lock); ihk_mc_spinlock_unlock_noirq(&proc->ftn->lock);
return -ECHILD; return -ECHILD;
} }