//include/linux/fs.h/** Keep mostly read-only and often accessed (especially for* the RCU path lookup and 'stat' data) fields at the beginning* of the 'struct inode'*/structinode{umode_ti_mode;kuid_ti_uid;kgid_ti_gid;unsignedinti_flags;union{constunsignedinti_nlink;unsignedint__i_nl...
voidinit_special_inode(structinode *inode, umode_t mode, dev_t rdev) { inode->i_mode =mode;if(S_ISCHR(mode)) { inode->i_fop = &def_chr_fops; inode->i_rdev =rdev; }elseif(S_ISBLK(mode)) { inode->i_fop = &def_blk_fops; inode->i_rdev =rdev; }elseif(S_ISFIFO(mod...
//include/linux/fs.h 596 /* 597 * Keep mostly read-only and often accessed (especially for 598 * the RCU path lookup and 'stat' data) fields at the beginning 599 * of the 'struct inode' 600 */ 601 struct inode { 602 umode_t i_mode; 603 unsigned short i_opflags; 604 kuid_t ...
1. 普通文件(inode.i_mode): 对于普通文件,默认情况下会使用 10 进制形式表示 i_mode 属性值。i_mode 是其中一个字段,用来表达该 inode 所关联对象(如 文件/目录) 的属性信息。 2. 目录(inode.i_mode): 在Linux 中,“d” 表示该对象为目录(directory),它可以通过查看 i_mode 字段的首位来确认。i_mod...
unsigned short i_mode;/*文件类型和属性,ls查看的结果,比如drwx---*/ unsigned short i_uid;/*文件宿主id*/ unsigned long i_size; unsigned long i_mtime;/*文件内容上一次变动的时间*/ unsigned char i_gid;/*groupid:宿主所在的组id*/ unsigned...
umode_t i_mode; //表示访问权限控制 unsigned short i_opflags; kuid_t i_uid; //用户ID kgid_t i_gid; //用户组ID 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; ...
i_mode字段是16位无符号整数类型，并使用位掩码方式记录着与权限相关的信息。其中高4位用于描述文件类型（例如普通文件、目录等），低12位则用于描述各种权限（读、写、执行）。 3. 文件类型 在Linux中，每个文件都有一个特定的类型。常见的文件类型包括普通文件（regular file）、目录（directory）、字符设备...
structrw_semaphorei_mmap_sem; structinodevfs_inode; structjbd2_inode*jinode; ... }; 再看一下:ext4_inode、ext4_inode_info、inode之间的关联, ext4_inode如下所示,是磁盘上inode的结构 structext4_inode{ __le16 i_mode;/* File mode */ __le...
i_mode. This field specifies whether the file is a directory (IFDIR), a block special file (IFBLK), or a character special file (IFCHR). Note that if one of the above modes was not set, the file was assumed to be a regular file. ...
i_mode. This field specifies whether the file is a directory (IFDIR), a block special file (IFBLK), or a character special file (IFCHR). Note that if one of the above modes was not set, the file was assumed to be a regular file. ...