函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\namei.c Create Date:2022-07-29 10:34:54
Last Modify:2020-03-12 14:18:49 Copyright©Brick
首页 函数Tree
注解内核,赢得工具下载SCCTEnglish

函数名称：follow_dotdot_rcu

函数原型：static int follow_dotdot_rcu(struct nameidata *nd)

返回类型：int

参数：

类型参数名称
struct nameidata *nd
1353  inode等于 path.dentry.d_inode
1355  当1循环
1356  如果path_equal( & path, & root)则退出
1358  如果dentry不等于mnt_root则
1359  old等于dentry
1360  parent等于 parent directory
1363  inode等于 Where the name belongs to - NULL is * negative
1364  seq等于ad_seqcount_begin - begin a seq-read critical section*@s: pointer to seqcount_t* Returns: count to be passed to read_seqcount_retry* read_seqcount_begin opens a read critical section of the given seqcount
1365  如果此条件成立可能性小(为编译器优化)(ad_seqcount_retry - end a seq-read critical section*@s: pointer to seqcount_t*@start: count, from read_seqcount_begin* Returns: 1 if retry is required, else 0* read_seqcount_retry closes a read critical section of the given seqcount)则返回:负ECHILD
1367  dentry等于parent
1368  seq等于seq
1369  如果此条件成立可能性小(为编译器优化)(!path_connected - Verify that a path->dentry is below path->mnt.mnt_root*@path: nameidate to verify* Rename can sometimes move a file or directory outside of a bind* mount, path_connected allows those cases to be detected.)则返回:负ECHILD
1371  退出
1372  否则
1373  mnt等于real_mount(mnt)
1374  mparent等于mnt_parent
1375  mountpoint等于mnt_mountpoint
1376  inode2等于 Where the name belongs to - NULL is * negative
1377  seq等于ad_seqcount_begin - begin a seq-read critical section*@s: pointer to seqcount_t* Returns: count to be passed to read_seqcount_retry* read_seqcount_begin opens a read critical section of the given seqcount
1378  如果此条件成立可能性小(为编译器优化)(read_seqretry( & mount_lock, m_seq))则返回:负ECHILD
1380  如果mnt恒等于mnt则退出
1383  dentry等于mountpoint
1384  mnt等于mnt
1385  inode等于inode2
1386  seq等于seq
1389  当此条件成立可能性小(为编译器优化)(d_mountpoint(dentry))循环
1391  mounted等于__lookup_mnt(mnt, dentry)
1392  如果此条件成立可能性小(为编译器优化)(read_seqretry( & mount_lock, m_seq))则返回:负ECHILD
1394  如果非mounted则退出
1396  mnt等于mnt
1397  dentry等于 root of the mounted tree
1398  inode等于d_inode
1399  seq等于ad_seqcount_begin - begin a seq-read critical section*@s: pointer to seqcount_t* Returns: count to be passed to read_seqcount_retry* read_seqcount_begin opens a read critical section of the given seqcount
1401  path.dentry.d_inode 等于inode
1402  返回:0
调用者
名称描述
handle_dots