code:uchar - ikarishinjieva/unixV6-code-analyze-chs GitHub Wiki

7685

7686 /* Return the next character from the

7687  * user string pointed at by dirp.

7688  */

7689 uchar()

7690 {

7691     register c;

7692

7693     c = fubyte(u.u_dirp++);

• 关于为什么u.u_dirp 能指向文件路径，参考trap 2770

7694     if(c == -1)

7695          u.u_error = EFAULT;

7696     return(c);

7697 }

7698 /* ------------------------- */

7699

• code:exec
• code:unlink
• code:chdir
• code:open
• code:creat
• code:link
• code:mknod
• code:stat
• code:smount
• code:getmdev
• code:owner