On 09/02/2023 16:28, Peng Yu wrote:
OK.I see the following output of `sudo dtruss mkdir -p d`. So essentially, coreutils first calls system function mkdir to make the directory. On error of the system call, it will check the target is a directory. If the target is indeed a directory, then no error message will be printed. Do I understand it correctly? ... mkdir("d\0", 0x1FF, 0x0) = -1 Err#17 stat64("d\0", 0x7FFEE9953D20, 0x0) = 0 0 ... Therefore, when there is competition among many calls to coreutils `mkdir -p`. The first instance will create the target, and the rest instances will fail on the system call of mkdir. But since they find the target is already created and is a directory, they will not complain about the error system call mkdir. That is why I never see an error similar to that of bash loadable `mkdir -p`. Is it so?
Right. That suggests a bug in the bash loadable, as it should not fail in this case. cheers, Pádraig
