80 lines
1.7 KiB
C
80 lines
1.7 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/statfs.h>
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static int ok = EXIT_SUCCESS;
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static void printsize(long long n)
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{
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char unit = 'K';
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n /= 1024;
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if (n > 1024) {
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n /= 1024;
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unit = 'M';
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}
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if (n > 1024) {
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n /= 1024;
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unit = 'G';
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}
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printf("%4lld%c", n, unit);
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}
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static void df(char *s, int always) {
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struct statfs st;
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if (statfs(s, &st) < 0) {
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fprintf(stderr, "%s: %s\n", s, strerror(errno));
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ok = EXIT_FAILURE;
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} else {
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if (st.f_blocks == 0 && !always)
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return;
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printf("%-20s ", s);
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printsize((long long)st.f_blocks * (long long)st.f_bsize);
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printf(" ");
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printsize((long long)(st.f_blocks - (long long)st.f_bfree) * st.f_bsize);
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printf(" ");
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printsize((long long)st.f_bfree * (long long)st.f_bsize);
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printf(" %d\n", (int) st.f_bsize);
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}
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}
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int df_main(int argc, char *argv[]) {
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printf("Filesystem Size Used Free Blksize\n");
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if (argc == 1) {
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char s[2000];
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FILE *f = fopen("/proc/mounts", "r");
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while (fgets(s, 2000, f)) {
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char *c, *e = s;
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for (c = s; *c; c++) {
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if (*c == ' ') {
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e = c + 1;
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break;
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}
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}
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for (c = e; *c; c++) {
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if (*c == ' ') {
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*c = '\0';
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break;
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}
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}
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df(e, 0);
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}
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fclose(f);
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} else {
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int i;
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for (i = 1; i < argc; i++) {
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df(argv[i], 1);
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}
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}
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exit(ok);
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}
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