1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <string.h> 4 #include <errno.h> 5 #include <sys/statfs.h> 6 7 static int ok = EXIT_SUCCESS; 8 9 static void df(char *s, int always) { 10 struct statfs st; 11 12 if (statfs(s, &st) < 0) { 13 fprintf(stderr, "%s: %s\n", s, strerror(errno)); 14 ok = EXIT_FAILURE; 15 } else { 16 if (st.f_blocks == 0 && !always) 17 return; 18 19 printf("%s: %lldK total, %lldK used, %lldK available (block size %d)\n", 20 s, 21 ((long long)st.f_blocks * (long long)st.f_bsize) / 1024, 22 ((long long)(st.f_blocks - (long long)st.f_bfree) * st.f_bsize) / 1024, 23 ((long long)st.f_bfree * (long long)st.f_bsize) / 1024, 24 (int) st.f_bsize); 25 } 26 } 27 28 int df_main(int argc, char *argv[]) { 29 if (argc == 1) { 30 char s[2000]; 31 FILE *f = fopen("/proc/mounts", "r"); 32 33 while (fgets(s, 2000, f)) { 34 char *c, *e = s; 35 36 for (c = s; *c; c++) { 37 if (*c == ' ') { 38 e = c + 1; 39 break; 40 } 41 } 42 43 for (c = e; *c; c++) { 44 if (*c == ' ') { 45 *c = '\0'; 46 break; 47 } 48 } 49 50 df(e, 0); 51 } 52 53 fclose(f); 54 } else { 55 int i; 56 57 for (i = 1; i < argc; i++) { 58 df(argv[i], 1); 59 } 60 } 61 62 exit(ok); 63 } 64
