Function statx_syscall

src/operations.cpp:397–412

A wrapper for the statx syscall. Disable MSAN since at least on clang 10 it doesn't know which fields of struct statx are initialized by the syscall and misdetects errors.

//! A wrapper for the statx syscall. Disable MSAN since at least on clang 10 it doesn't
//! know which fields of struct statx are initialized by the syscall and misdetects errors.
BOOST_FILESYSTEM_NO_SANITIZE_MEMORY
int statx_syscall(int dirfd, const char* path, int flags, unsigned int mask, struct ::statx* stx)
{
    int res = ::syscall(__NR_statx, dirfd, path, flags, mask, stx);
    if (res < 0)
    {
        const int err = errno;
        if (BOOST_UNLIKELY(err == ENOSYS))
        {
            filesystem::detail::atomic_store_relaxed(statx_ptr, &statx_fstatat);
            return statx_fstatat(dirfd, path, flags, mask, stx);
        }
    }

    return res;
}

#endif // defined(BOOST_FILESYSTEM_HAS_STATX)