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struct dirt_entry{
        unsigned short inode;
        char name[NAME_LEN];
}£»
¿É ÒÔ¿´µ½Ò»¸öĿ¼ÏîÖаüº¬ÁËÎļþµÄi½ÚµãºÅºÍÎļþµÄÃû³Æ¡£Â·¾¶ÓÐÁ½ÖÖ£¬Ò»ÖÖÊǾø¶Ô·¾¶£¬Ò»ÖÖÊÇÏà¶Ô·¾¶¡£±ÈÈç/home/fish¾ÍÊǾø¶Ô·¾¶£¬ËüÒÔ¸ùĿ¼ /Ϊ¿ªÍ·£¬¶ø X11/xorg.conf¾ÍÊÇÏà¶Ô·¾¶£¬ËüÏà¶ÔÓÚĿ¼/etc,Ò²¾ÍÊÇ˵ºóÕߵľø¶Ô·¾¶ÊÇ/etc/X11/xorg.conf¡£Â·¾¶ÊÇÓÉĿ¼Ïî×é³É µÄ¡£Äà /home/fish/fish.cÀ´Ëµ£¬µÚÒ»¸öĿ¼ÊÇ/£¬¼´¸ùĿ¼¡£ÔÚ¸ùĿ¼ÎļþÖÐÓÐÃû×ÖΪhomeµÄĿ¼ÏȻºóͨ¹ýhomeĿ¼ÏîÖеÄi½Úµã¾Í¿ÉÒÔ ÕÒµ½homeÎļþ£¬Í¨¹ýi½ÚµãÖеÄi_mode×ֶοÉÖªËüÊÇÒ»¸öĿ¼£¬ÔÚÕâ¸öÎļþÖÐÓÐÃûΪfishµÄĿ¼ÏȻºó¸ù¾ÝÕâ¸öĿ¼ÏîÖеÄi½ÚµãºÅÕÒµ½fish Îļþ¡£Í¬ÑùÓÉfishµÄinode->i_modeÖªÕâÒ²ÊǸöĿ¼¡£Í¬ÑùÔÚfishÎļþÖÐÕÒµ½ÃûΪfish.cµÄĿ¼Ï¾Í¿ÉÒÔÕÒ³öfish.cµÄ i½Úµã£¬ËÑË÷Íê³É¡£
namei.c ÊÇÄÚºËÖÐ×µÄÒ»¸öÎļþ£¬Ëü°üº¬ÁËÐí¶à¹ØÓÚĿ¼µÄ²Ù×÷£¬Èçfind_entry(´ÓÒ»¸öĿ¼ÖÐËÑË÷Öƶ¨µÄĿ¼Ïî),add_entry(ÍùÖ¸¶¨µÄĿ¼ÖÐÌí ¼ÓÒ»¸öÎļþĿ¼Ïî),get_dir(¸ù¾Ý·¾¶ÃûÕÒµ½Ö¸¶¨µÄĿ¼),dir_namei(·µ»ØÖ¸¶¨Ä¿Â¼µÄi½ÚµãÖ¸Õë),»¹ÓÐnamei(¸ù¾Ý·¾¶ÃûÕÒµ½Ö¸ ¶¨Â·¾¶µÄi½Úµã)µÈµÈ¡£ÎÒÃǾÍÏÈÄÃfind_entryÀ´¿´Ò»Ï¡£
//dir:Ö¸¶¨Ä¿Â¼µÄi½ÚµãÖ¸Õë¡£name:ÎļþÃû,namelen£ºÎļþÃû³¤¶È¡£
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static struct buffer_head* find_entry(struct m_inode **dir,const char*name,int namelen,struct dir_entry **res_dir)
{
        int entries;
        int block ,i;
        struct buffer_head *bh;
        struct dir_entry *de;
        struct super_blocl *sb;
//Èç¹û¶¨ÒåÁËNO_TRUNCATE,ÔòÈç¹ûÎļþÃû´óÓÚ×î´ó³¤¶ÈNAME_LEN,·µ»Ø¡£  


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linux 0.11 Îļþϵͳ£¨Ò»£©

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