请教flock出错时，errno的值

4059056

请教flock出错时，errno的所有值，及含义。

4059056

哎，其实man一下就出来了，汗颜啊，怎么现在才知道

1. RETURN VALUE
   
2.        On success, zero is returned.  On error, -1 is returned, and errno is set appropriately.
   
3. 
   
4. ERRORS
   
5.        EBADF  fd is not a not an open file descriptor.
   
6. 
   
7.        EINTR  While waiting to acquire a lock, the call was interrupted by delivery of a signal caught by a handler.
   
8. 
   
9.        EINVAL operation is invalid.
   
10. 
    
11.        ENOLCK The kernel ran out of memory for allocating lock records.
    
12. 
    
13.        EWOULDBLOCK
    
14.               The file is locked and the LOCK_NB flag was selected.
    

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