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linuxÏÂfuseÖÐstatº¯Êýst_mode µÄСÒÉÎÊ

¹ØÓÚst_mode µÄÒÉÎÊ
C/C++ code:
static const char *hello_str = "Hello World!\n";
static const char *hello_path = "/hello";

static int hello_getattr(const char *path, struct stat *stbuf)
{
int res = 0;

memset(stbuf, 0, sizeof(struct stat));
if (strcmp(path, "/") == 0) {
stbuf->st_mode = S_IFDIR | 0755; //*****S_IFDIRÊÇָĿ¼Îļþ£¬ÄǺóÃæµÄ | 0755;ÊÇʲôÒâ˼ÄØ£¿
stbuf->st_nlink = 2;
} else if (strcmp(path, hello_path) == 0) {
stbuf->st_mode = S_IFREG | 0444; //Õâ¸öÒ²ÊÇ | 0444²»ÖªÄÃÀ´¸ÉʲôµÄ£¿
stbuf->st_nlink = 1;
stbuf->st_size = strlen(hello_str);
} else
res = -ENOENT;

return res;
}

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Ò»°ãÈ˶¼ÊÇʹÓÃstatÀ´Ìî³ästruct stat£¬»ñÈ¡µÄÊÇʵ¼ÊÎļþÐÅÏ¢¡£
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Ê×ÏÈ¿´¿´struct stat
struct stat {

        mode_t    st_mode;      //Îļþ¶ÔÓ¦µÄģʽ£¬Îļþ£¬Ä¿Â¼µÈ

      &nb


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