http://www.gnu.org/software/libc/manual/html_node/Open-File-Description-Locks.html#Open-File-Description-Locks.html https://www.gnu.org/software/libc/manual/html_node/Open-File-Description-Locks.html#Open-File-Description-Locks
fcntl(F_OFD_SETLK) locks on an open file table entry, (usually obtained by open()). Easy to understand.
但以下例子:
在其示范程序中,每一条对口电话 open(),因此,每个档案管理员都应注明不同的公开档案表条目。
然后,每条路面的<代码>fcntl(fd, F_OFD_SETLKW, &lck)就在不同的公开档案表条目上打开了锁,这意味着这一锁定完全是错误的。
但我是在乌兰巴托测试的,出于某种原因。 我失踪了什么?
旧问题但:多个文件descriptors可点到同一个公开档案description。 在此情况下,<代码>OFD式电话就说明本身(因此作为“LC”概念不可运输)而不是描述者建立了咨询锁。 微妙差异。
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