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