ladybird/Userland/Tests/Kernel/path-resolution-race.cpp

#include <unistd.h>
#include <sys/stat.h>

int main()
{
    if (!fork()) {
        for (;;) {
            mkdir("/tmp/x", 0666);
            rmdir("/tmp/x");
        }
    }
    for (;;) {
        chdir("/tmp/x");
    }
    return 0;
}
Kernel: Make Inode::lookup() return a RefPtr<Inode> Previously this API would return an InodeIdentifier, which meant that there was a race in path resolution where an inode could be unlinked in between finding the InodeIdentifier for a path component, and actually resolving that to an Inode object. Attaching a test that would quickly trip an assertion before. Test: Kernel/path-resolution-race.cpp 2020-02-01 09:23:46 +01:00			`#include <unistd.h>`
			`#include <sys/stat.h>`

			`int main()`
			`{`
			`if (!fork()) {`
			`for (;;) {`
			`mkdir("/tmp/x", 0666);`
			`rmdir("/tmp/x");`
			`}`
			`}`
			`for (;;) {`
			`chdir("/tmp/x");`
			`}`
			`return 0;`
			`}`