函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\locks.c Create Date:2022-07-29 10:59:32
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：heck_conflicting_open - see if the given file points to an inode that has* an existing open that would conflict with the* desired lease

函数原型：static int check_conflicting_open(struct file *filp, const long arg, int flags)

返回类型：int

参数：

类型参数名称
struct file *filp
const longarg
intflags
1776  inode等于locks_inode(filp)
1777  self_wcount等于0, self_rcount等于0
1779  如果flags按位与utstanding pNFS layout 则返回:0
1782  如果arg恒等于F_RDLCK则返回:如果inode_is_open_for_write(inode)则负EAGAIN否则0
1784  否则如果arg不等于F_WRLCK则返回:0
1793  如果f_mode按位与le is open for writing 则self_wcount等于1
1795  否则如果f_mode按位与le is open for reading 则self_rcount等于1
1798  如果atomic_read( & i_writecount)不等于self_wcount或atomic_read( & struct files open RO )不等于self_rcount则返回:负EAGAIN
1802  返回:0
调用者
名称描述
generic_add_lease