Fix "comma after last element" warning.
[dss.git] / df.c
1 /*
2 * Copyright (C) 2008-2010 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6 #include <sys/statvfs.h>
7 #include <stdio.h>
8 #include <assert.h>
9 #include <string.h>
10 #include <sys/types.h>
11 #include <errno.h>
12
13 #include "gcc-compat.h"
14 #include "log.h"
15 #include "error.h"
16 #include "string.h"
17 #include "df.h"
18
19 int get_disk_space(const char *path, struct disk_space *result)
20 {
21 /* using floats allows to not care about integer overflows */
22 float total_blocks, available_blocks, blocksize;
23 float total_inodes, available_inodes;
24
25 struct statvfs vfs;
26 int ret = statvfs(path, &vfs);
27 if (ret < 0)
28 return -ERRNO_TO_DSS_ERROR(errno);
29
30 available_blocks = vfs.f_bavail;
31 blocksize = vfs.f_bsize;
32 total_blocks = vfs.f_blocks;
33 total_inodes = vfs.f_files;
34 available_inodes = vfs.f_ffree;
35
36 result->total_mb = total_blocks * blocksize / 1024.0 / 1024.0;
37 result->free_mb = available_blocks * blocksize / 1024.0 / 1024.0;
38 result->percent_free = 100.0 * available_blocks / total_blocks + 0.5;
39 result->percent_free_inodes = 100.0 * available_inodes / total_inodes + 0.5;
40 return 1;
41 }
42
43 void log_disk_space(struct disk_space *ds)
44 {
45 DSS_INFO_LOG("free: %uM/%uM (%u%%), %u%% inodes unused\n",
46 ds->free_mb, ds->total_mb, ds->percent_free,
47 ds->percent_free_inodes);
48 }