79 lines
1.4 KiB
C
79 lines
1.4 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <sys/statvfs.h>
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#include <mntent.h>
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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 "util.h"
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static void mnt_show(const char *fsname, const char *dir);
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static void
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usage(void)
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{
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eprintf("usage: %s [-a]\n", argv0);
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}
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int
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main(int argc, char *argv[])
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{
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struct mntent *me = NULL;
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FILE *fp;
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int aflag = 0;
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ARGBEGIN {
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case 'a':
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aflag = 1;
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break;
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case 's':
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case 'h':
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case 'i':
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eprintf("not implemented\n");
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default:
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usage();
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} ARGEND;
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printf("Filesystem 512-blocks Used Avail Capacity Mounted on\n");
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fp = setmntent("/proc/mounts", "r");
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if (!fp)
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eprintf("setmntent %s:", "/proc/mounts");
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while ((me = getmntent(fp)) != NULL) {
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if (aflag == 0)
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if (strcmp(me->mnt_type, "rootfs") == 0)
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continue;
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mnt_show(me->mnt_fsname, me->mnt_dir);
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}
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endmntent(fp);
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return 0;
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}
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static void
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mnt_show(const char *fsname, const char *dir)
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{
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struct statvfs s;
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unsigned long long total, used, avail;
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int capacity = 0;
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int bs;
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statvfs(dir, &s);
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bs = s.f_frsize / 512;
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total = s.f_blocks * bs;
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avail = s.f_bfree * bs;
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used = total - avail;
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if (used + avail) {
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capacity = (used * 100) / (used + avail);
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if (used * 100 != capacity * (used + avail))
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capacity++;
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}
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printf("%-12s %9llu %9llu %9llu %7d%% %s\n",
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fsname, total, used, avail, capacity,
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dir);
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}
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