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/*
* UNG's Not GNU
*
* Copyright (c) 2023, Jakob Kaivo <jkk@ung.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#define _XOPEN_SOURCE 700
#include <errno.h>
#include <locale.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/statvfs.h>
#include <unistd.h>
static enum { POSIX, TOTAL } output = POSIX;
static unsigned int blocksize = 512;
static int df(const char *path)
{
struct statvfs fs;
if (statvfs(path, &fs) != 0) {
perror(path);
return 1;
}
const char *name = path;
const char *root = path;
printf("%-10s %11ju %11ju %11ju %7ju%% %s\n",
name,
fs.f_blocks,
fs.f_blocks - fs.f_bfree,
fs.f_bfree,
((fs.f_blocks - fs.f_bfree) * 100 / fs.f_blocks),
root);
return 0;
}
int main(int argc, char *argv[])
{
setlocale(LC_ALL, "");
int c;
while ((c = getopt(argc, argv, "kPt")) != -1) {
switch(c) {
case 'k': /** Use 1024-byte blocks **/
blocksize = 1024;
break;
case 'P':
output = POSIX;
break;
case 't':
output = TOTAL;
break;
default:
return 1;
}
}
if (output == POSIX) {
printf("Filesystem %4u-blocks Used Available Capacity Mounted on\n", blocksize);
} else {
/* print some other header */
}
int ret = 0;
do {
ret |= df(argv[optind++]);
} while (optind < argc);
return ret;
}
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