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waitpid(): Fixed regression introduced with my signals changes: When WNOHANG was 

specified the syscall error code B_WOULD_BLOCK would no longer be mapped to 0.
Fixes #7693.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42188 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2011-06-15 02:42:53 +00:00
parent 5b0ecc5fd1
commit 100541ec40
1 changed files with 6 additions and 1 deletions
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7
src/system/libroot/posix/sys/wait.cpp
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@ -32,8 +32,13 @@ waitpid(pid_t pid, int* _status, int options)
pthread_testcancel();
if (child < 0)
if (child < 0) {
// When not getting a child status when WNOHANG was specified, don't
// fail.
if (child == B_WOULD_BLOCK && (options & WNOHANG) != 0)
return 0;
RETURN_AND_SET_ERRNO(child);
}
// prepare the status
if (_status != NULL) {