36 Result<void> BindMount(const std::string& target, const std::string& source) {  in BindMount()  argument
37   LOG(VERBOSE) << "Creating bind-mount for " << target << " for " << source;  in BindMount()
44       if (stat(target.c_str(), &buf) != 0) {  in BindMount()
49           PLOG(ERROR) << "Could not stat target directory " << target;  in BindMount()
62       LOG(WARNING) << target << " is not a directory, attempting to fix";  in BindMount()
63       if (unlink(target.c_str()) != 0) {  in BindMount()
64         PLOG(ERROR) << "Failed to unlink " << target;  in BindMount()
71       LOG(VERBOSE) << "Creating mountpoint " << target;  in BindMount()
72       if (mkdir(target.c_str(), kMkdirMode) != 0) {  in BindMount()
73         return ErrnoError() << "Could not create mountpoint " << target;  in BindMount()
78       int rc = umount2(target.c_str(), UMOUNT_NOFOLLOW);  in BindMount()
81         PLOG(ERROR) << "Could not unmount " << target;  in BindMount()
86   LOG(VERBOSE) << "Bind-mounting " << source << " to " << target;  in BindMount()
87   if (mount(source.c_str(), target.c_str(), nullptr, MS_BIND, nullptr) == 0) {  in BindMount()
90   return ErrnoError() << "Could not bind-mount " << source << " to " << target;  in BindMount()