校验
man statvfs(2)
我相信您可以将“可用空间”计算为
f_bsize * f_bfree。
NAME statvfs, fstatvfs - get file system statisticsSYNOPSIS #include <sys/statvfs.h> int statvfs(const char *path, struct statvfs *buf); int fstatvfs(int fd, struct statvfs *buf);DEscriptION The function statvfs() returns information about a mounted file system. path is the pathname of any file within the mounted file system. buf is a pointer to a statvfs structure defined approximately as follows:struct statvfs { unsigned long f_bsize; unsigned long f_frsize; fsblkcnt_t f_blocks; fsblkcnt_t f_bfree; fsblkcnt_t f_bavail; fsfilcnt_t f_files; fsfilcnt_t f_ffree; fsfilcnt_t f_favail; unsigned long f_fsid; unsigned long f_flag; unsigned long f_namemax; };
