分配fs_context do_new_mount 是比较重要的函数, 这里面分配了fs_context结构体。 fs/namespace.c /* * create a new mount for userspace and request it to be added into the * namespace's tree */ static int do_new_mount(struct path *path, const char *fstype, int sb_flags, int mnt_fla...
1.vfs_get_tree 调用具体文件系统的获取填充超级块方法(fs_context_operations.get_tree或者file_system_type.mount), 在内存构建super_block,然后构建根inode和根dentry(磁盘文件系统可能需要从磁盘读取磁盘超级块构建内存的super_block,从磁盘读取根inode构建内存的inode)。2.do_new_mount_fc 对于每次挂载都会分配mou...
1.vfs_get_tree 调用具体文件系统的获取填充超级块方法(fs_context_operations.get_tree或者file_system_type.mount), 在内存构建super_block,然后构建根inode和根dentry(磁盘文件系统可能需要从磁盘读取磁盘超级块构建内存的super_block,从磁盘读取根inode构建内存的inode)。2.do_new_mount_fc 对于每次挂载都会分配mou...
struct legacy_fs_context { char *legacy_data; /* Data page for legacy filesystems */ size_t data_size; enum legacy_fs_param param_type; }; static int legacy_init_fs_context(struct fs_context *fc); static const struct constant_table common_set_sb_flag[] = { { "...
CVE-2022-0185是一个Linux内核中"Filesystem Context"中的一个堆溢出漏洞,攻击者可以利用该漏洞发起DDoS攻击,实现容器逃逸和提升至主机权限。该漏洞是在Google KCTF(基于Kubernetes的CTF)漏洞赏金计划中被Crusaders of Rust[1]团队的成员Jamie...
};structfile_lock_context *i_flctx;structaddress_space i_data;structlist_head i_devices; union {structpipe_inode_info *i_pipe;structcdev *i_cdev;char*i_link; unsigned i_dir_seq; };...void*i_private;/*fs or device private pointer*/} ...
要使用该结构体,需要包含头文件"linux/fs.h"。该结构体中的成员变量很多,但在本章中,我们只用到打开(open)、关闭(release)、读(read)、写(write)这四个成员变量,以及一个默认需要的所有者(owner)成员变量。 1structfile_operations {2...3structmodule *owner;4int(*open) (structinode *,structfile *);...
unsigned int i_flags; //文件系统标志#ifdef CONFIG_FS_POSIX_ACL struct posix_acl *i_acl; struct posix_acl *i_default_acl;#endif const struct inode_operations *i_op; struct super_block *i_sb; struct address_space *i_mapping;#ifdef CONFIG_SECURITY ...
mount -t hostfs /some/path/on/host folder But subsequent calls tols folderon the same shell still does not display the expected contents. This is because themountcommand could only modify the mount table kept by itself (and propagated to children throughfork), but not the one used by its...
fs_context.c fs_parser.c fs_pin.c fs_struct.c fs_types.c fsopen.c inode.c internal.h io-wq.c io-wq.h io_uring.c ioctl.c libfs.c locks.c mbcache.c mount.h mpage.c namei.c namespace.c no-block.c nsfs.c open.c pipe.c pnode.c pnode.h posix_acl.c proc_namespace.c ...