Pi66

sta
minimal & simple status monitoring app.
git clone https://git.pi66.xyz/sta

components/disk.c 

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/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <sys/statvfs.h>

#include "../util.h"

const char *
disk_free(const char *path)
{
    static _Thread_local char buf[1024];
    struct statvfs fs;

    if (statvfs(path, &fs) < 0) {
        warn("statvfs '%s':", path);
        return NULL;
    }

    return fmt_human(buf, fs.f_frsize * fs.f_bavail, 1024);
}

const char *
disk_perc(const char *path)
{
    static _Thread_local char buf[1024];
    struct statvfs fs;

    if (statvfs(path, &fs) < 0) {
        warn("statvfs '%s':", path);
        return NULL;
    }

    return bprintf(buf, "%d", (int)(100 *
                   (1 - ((double)fs.f_bavail / (double)fs.f_blocks))));
}

const char *
disk_total(const char *path)
{
    static _Thread_local char buf[1024];
    struct statvfs fs;

    if (statvfs(path, &fs) < 0) {
        warn("statvfs '%s':", path);
        return NULL;
    }

    return fmt_human(buf, fs.f_frsize * fs.f_blocks, 1024);
}

const char *
disk_used(const char *path)
{
    static _Thread_local char buf[1024];
    struct statvfs fs;

    if (statvfs(path, &fs) < 0) {
        warn("statvfs '%s':", path);
        return NULL;
    }

    return fmt_human(buf, fs.f_frsize * (fs.f_blocks - fs.f_bfree), 1024);
}