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Added a missing check of the return value of a cached write in

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Inode::FillGapWithZeros(), pointed out by Mike Nordell.
Note, that function is currently not used.
Some smaller cleanups.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1058 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2002-09-16 15:13:23 +00:00
parent 502d10e3ff
commit fb34ad79d7
1 changed files with 13 additions and 11 deletions
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24
src/add-ons/kernel/file_systems/bfs/Inode.cpp
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@ -907,14 +907,15 @@ Inode::WriteAt(Transaction *transaction,off_t pos,const uint8 *buffer,size_t *_l
*/
status_t
Inode::FillGapWithZeros(off_t pos,off_t newSize)
Inode::FillGapWithZeros(off_t pos, off_t newSize)
{
// ToDo: we currently do anything here, same as original BFS!
//if (pos >= newSize)
return B_OK;
block_run run;
off_t offset;
if (FindBlockRun(pos,run,offset) < B_OK)
if (FindBlockRun(pos, run, offset) < B_OK)
RETURN_ERROR(B_BAD_VALUE);
off_t length = newSize - pos;
@ -939,16 +940,17 @@ Inode::FillGapWithZeros(off_t pos,off_t newSize)
if (length < bytesWritten)
bytesWritten = length;
memset(block + (pos % blockSize),0,bytesWritten);
fVolume->WriteBlocks(cached.BlockNumber(),block,1);
memset(block + (pos % blockSize), 0, bytesWritten);
if (fVolume->WriteBlocks(cached.BlockNumber(), block, 1) < B_OK)
RETURN_ERROR(B_IO_ERROR);
pos += bytesWritten;
length -= bytesWritten;
if (length == 0)
return B_OK;
if (FindBlockRun(pos,run,offset) < B_OK)
if (FindBlockRun(pos, run, offset) < B_OK)
RETURN_ERROR(B_BAD_VALUE);
}
@ -959,25 +961,25 @@ Inode::FillGapWithZeros(off_t pos,off_t newSize)
CachedBlock cached(fVolume);
off_t blockNumber = fVolume->ToBlock(run);
for (int32 i = 0;i < run.length;i++) {
if ((block = cached.SetTo(blockNumber + i,true)) == NULL)
for (int32 i = 0; i < run.length; i++) {
if ((block = cached.SetTo(blockNumber + i, true)) == NULL)
RETURN_ERROR(B_IO_ERROR);
if (fVolume->WriteBlocks(cached.BlockNumber(),block,1) < B_OK)
if (fVolume->WriteBlocks(cached.BlockNumber(), block, 1) < B_OK)
RETURN_ERROR(B_IO_ERROR);
}
int32 bytes = run.length << blockShift;
length -= bytes;
bytesWritten += bytes;
// since we don't respect a last partial block, length can be lower
if (length <= 0)
break;
pos += bytes;
if (FindBlockRun(pos,run,offset) < B_OK)
if (FindBlockRun(pos, run, offset) < B_OK)
RETURN_ERROR(B_BAD_VALUE);
}
return B_OK;