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Use memcpy to move the extended volume size fields to a local variable,

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as in old versions of Mac OS they're a concatenation of two 32-bit fields instead of a 64-bit field.
This commit is contained in:
Natalia Portillo
2021-04-14 04:26:25 +01:00
parent 57fb334f77
commit 4be893fe4a
1 changed files with 8 additions and 4 deletions
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12
setter/src/macos/volume.c
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@@ -25,6 +25,7 @@ Copyright (C) 2011-2021 Natalia Portillo
#include <Files.h>
#include <Gestalt.h>
#include <stdio.h>
#include <string.h>
#include "../include/defs.h"
#include "../log.h"
@@ -95,17 +96,20 @@ void GetVolumeInfo(const char* path, size_t* clusterSize)
log_write("Could not get volume information.\n");
return;
}
// Because old compilers use a struct instead of a 64 bit integer
memcpy(&totalBytes, &xpb.ioVTotalBytes, 8);
memcpy(&freeBytes, &xpb.ioVFreeBytes, 8);
drvInfo = xpb.ioVDrvInfo;
refNum = xpb.ioVRefNum;
totalBlocks = xpb.ioVTotalBytes / xpb.ioVAlBlkSiz;
freeBlocks = xpb.ioVFreeBytes / xpb.ioVAlBlkSiz;
totalBlocks = totalBytes / xpb.ioVAlBlkSiz;
freeBlocks = freeBytes / xpb.ioVAlBlkSiz;
crDate = xpb.ioVCrDate;
lwDate = xpb.ioVLsMod;
bkDate = xpb.ioVBkUp;
fsId = xpb.ioVSigWord;
*clusterSize = xpb.ioVAlBlkSiz;
totalBytes = xpb.ioVTotalBytes;
freeBytes = xpb.ioVFreeBytes;
if(xpb.ioVFSID != 0) { fsId = xpb.ioVFSID; }
}