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#include <sys/vfs.h> /* »òÕß <sys/statfs.h> */
int statfs(const char *path, struct statfs *buf);
int fstatfs(int fd, struct statfs *buf);
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fd£º λÓÚÐèÒª²éѯÐÅÏ¢µÄÎļþϵͳµÄÎļþÃèÊö´Ê¡£
buf£ºÒÔϽṹÌåµÄÖ¸Õë±äÁ¿£¬ÓÃÓÚ´¢´æÎļþϵͳÏà¹ØµÄÐÅÏ¢
struct statfs
{
long f_type; /* ÎļþϵͳÀàÐÍ */
long f_bsize; /* ¾¹ýÓÅ»¯µÄ´«Êä¿é´óС */
long f_blocks; /* ÎļþϵͳÊý¾Ý¿é×ÜÊý */
long f_bfree; /* ¿ÉÓÿéÊý */
long f_bavail; /* ·Ç³¬¼¶Óû§¿É»ñÈ¡µÄ¿éÊý */
long f_files; /* Îļþ½áµã×ÜÊý */
long f_ffree; /* ¿ÉÓÃÎļþ½áµãÊý */
fsid_t f_fsid; /* Îļþϵͳ±êʶ */
long f_namelen; /* ÎļþÃûµÄ×î´ó³¤¶È */
};
***************************************************************
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