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add getDiskSize

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Couldn't find anything that exposed this for Windows.
This commit is contained in:
Joey Hess 2014-01-22 22:19:52 -04:00
parent ed7c61914c
commit 85aae97b63
2 changed files with 51 additions and 14 deletions
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37
Utility/libdiskfree.c
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@ -1,6 +1,6 @@
/* disk free space checking, C mini-library
*
* Copyright 2012 Joey Hess <joey@kitenet.net>
* Copyright 2012, 2014 Joey Hess <joey@kitenet.net>
*
* Licensed under the GNU GPL version 3 or higher.
*/
@ -43,16 +43,12 @@
#include <errno.h>
#include <stdio.h>
/* Checks the amount of disk that is available to regular (non-root) users.
* (If there's an error, or this is not supported,
* returns 0 and sets errno to nonzero.)
*/
unsigned long long int diskfree(const char *path) {
unsigned long long int get(const char *path, int req) {
#ifdef UNKNOWN
errno = 1;
return 0;
#else
unsigned long long int available, blocksize;
unsigned long long int v, blocksize;
struct STATSTRUCT buf;
if (STATCALL(path, &buf) != 0)
@ -60,12 +56,35 @@ unsigned long long int diskfree(const char *path) {
else
errno = 0;
available = buf.f_bavail;
switch (req) {
case 0:
v = buf.f_blocks;
break;
case 1:
v = buf.f_bavail;
break;
default:
v = 0;
}
blocksize = buf.f_bsize;
return available * blocksize;
return v * blocksize;
#endif
}
/* Checks the amount of disk that is available to regular (non-root) users.
* (If there's an error, or this is not supported,
* returns 0 and sets errno to nonzero.)
*/
unsigned long long int diskfree(const char *path) {
return get(path, 1);
}
/* Gets the total size of the disk. */
unsigned long long int disksize(const char *path) {
return get(path, 0);
}
/*
main () {
printf("%lli\n", diskfree("."));