1 #include <sys/statfs.h>
2 #include <stdio.h>
3 #include <fcntl.h>
4
main(int argc,char ** argv)5 int main(int argc,char **argv)
6 {
7 int fd = open("/bin/about.elf", O_RDONLY);
8 if (fd == -1)
9 return 0;
10 printf("fd = %d\n", fd);
11 struct statfs diskInfo;
12
13
14 fstatfs(fd, &diskInfo);
15 unsigned long long blocksize1 = diskInfo.f_bsize; //每个block里包含的字节数
16 unsigned long long totalsize = blocksize1 * diskInfo.f_blocks;//总的字节数，f_blocks为block的数目
17 printf("Total_size=%llu B =%llu KB =%llu MB = %llu GB\n",
18 totalsize,totalsize>>10,totalsize>>20, totalsize>>30);
19
20 /* 2.获取一下剩余空间和可用空间的大小 */
21 unsigned long long freeDisk = diskInfo.f_bfree * blocksize1; //剩余空间的大小
22 unsigned long long availableDisk = diskInfo.f_bavail * blocksize1; //可用空间大小
23 printf("Disk_free=%llu MB =%llu GB Disk_available=%llu MB = %llu GB\n",
24 freeDisk>>20,freeDisk>>30,availableDisk>>20, availableDisk>>30);
25
26
27 printf("====================\n");
28 printf("diskInfo address: %p\n", diskInfo);
29 printf("f_type= %lu\n", diskInfo.f_type);
30 printf("f_bsize = %lu\n", diskInfo.f_bsize);
31 printf("f_blocks = %d\n", diskInfo.f_blocks);
32 printf("f_bfree = %lu\n", diskInfo.f_bfree);
33 printf("b_avail = %d\n", diskInfo.f_bavail);
34 printf("f_files = %d\n", diskInfo.f_files);
35 printf("f_ffree = %lu\n", diskInfo.f_ffree);
36 printf("f_fsid = %ld\n", diskInfo.f_fsid);
37 printf("f_namelen = %ld\n", diskInfo.f_namelen);
38 printf("f_frsize = %ld\n", diskInfo.f_frsize);
39 printf("f_flags = %ld\n", diskInfo.f_flags);
40 return 0;
41 }