在Linux中是否有标准调用来解析inode的路径名？

Question

使内核模块将inode链接到目录。初学者就这样学习曲线。计划是将目录解析为inode，找到其超级块，然后使用iget_locked从文件中获取inode，最后将该inode链接到目标目录的dentry并增加其链接数。

Answer 1

syscall stat将路径名作为输入并转储stat结构。

int stat(const char *pathname, struct stat *statbuf);

文件的inode可以作为struct的成员找到：

       struct stat {
           dev_t     st_dev;         /* ID of device containing file */
           ino_t     st_ino;         /* Inode number */
           mode_t    st_mode;        /* File type and mode */
           nlink_t   st_nlink;       /* Number of hard links */
           uid_t     st_uid;         /* User ID of owner */
           gid_t     st_gid;         /* Group ID of owner */
           dev_t     st_rdev;        /* Device ID (if special file) */
           off_t     st_size;        /* Total size, in bytes */
           blksize_t st_blksize;     /* Block size for filesystem I/O */
           blkcnt_t  st_blocks;      /* Number of 512B blocks allocated */

           /* Since Linux 2.6, the kernel supports nanosecond
              precision for the following timestamp fields.
              For the details before Linux 2.6, see NOTES. */

           struct timespec st_atim;  /* Time of last access */
           struct timespec st_mtim;  /* Time of last modification */
           struct timespec st_ctim;  /* Time of last status change */

       #define st_atime st_atim.tv_sec      /* Backward compatibility */
       #define st_mtime st_mtim.tv_sec
       #define st_ctime st_ctim.tv_sec
       };

参考手册页统计（2）。希望这能回答你的问题。