一个比较特殊的是根目录,这个根目录是指挂载的根目录,它的d_parent是自身,而且其名字是"/" 所以要获取完整的路径,可以在内核模块中参照如下的写法,具体的函数也可以参照内核的 dentry_path_raw,下面是手写的简化版: voidget_inode_filename(structdentry *dentry,char*filename) {structdentry *temp;constchar*i...
二是传递性,继承的单根性呢,就 决定了一个类只能有一个父类,他不能同时去继承两个父类,这...
全局变量就定义成一个全局静态变量. 存储在内存中的位置:静态存储区,在整个程序运行期间一直存在。
On Android-x86 (or BlissOS) it initialize Android by using switch_root or chroot, when checking a path with dentry_path_raw() it will show the whole real path instead of the path that we want. Relax the checking requirement by using strstr to look for "/system/packages.list" in the ...
这一组和raw_write_seqcount_begin, raw_write_seqcount_end类似,差别在于会引入lockdep死锁debug机制,lockdep的实现我们在专门文章中分析。 5.2.3 raw_read_seqcount_begin 开始读取临界区,首先读取sequence,如果是奇数,则在while循环中调用cpu_relax(),并重新判断sequence,直到sequence为偶数。把sequence作为返回值返...
raw_lock={ val={ counter=0} } } } }, count=1---不应该为1} } } 分析了对应的dentry的 d_subdirs,已经为空,说明它下面的文件和目录都已经跟它脱离关系。 staticintcgroup_destroy_locked(structcgroup *cgrp) { ... dget(d);//we add dentry->d_lockref.count,it will at least 2cgroup_...
808 * the bottom up, there may for a time be a subpath of dentrys which is not 809 * connected to the main tree. This semaphore ensure that there is only ever 810 * one such free path per filesystem. Note that unconnected files (or other ...
changed the odf_sb_info structure to hold dentry pointers to the odf special dirs instead of odf_dentry_info pointers diff --git a/fs/unionfs/dirhelper.c b/fs/unionfs/dirhelper.c index 040e4e4..309f0eb 100644 --- a/fs/unionfs/dirhelper.c +++ b/fs/unionfs/dirhelper.c @@ -571,...
示例1: afs_linux_raw_open ▲点赞 7▼ struct file *afs_linux_raw_open(afs_dcache_id_t*ainode){structinode*tip=NULL;structdentry*dp=NULL;structfile*filp;dp = afs_get_dentry_from_fh(afs_cacheSBp, ainode, cache_fh_len, cache_fh_type, ...
EXPORT_SYMBOL(dentry_path_raw); 该函数根据给定dentry返回其文件的完整路径。使用EXPORT_SYMBOL导出,可以直接调用。 关于dentry介绍请参考:Linux文件系统 struct dentry 结构体解析 1.1 __dentry_path /** Write full pathname from the root of the filesystem into the buffer.*/ ...