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(trunk libT) #2228: transmission should learn to truncate files on updating torrents

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This commit is contained in:
Charles Kerr 2009-06-21 07:53:51 +00:00
parent ef9896e223
commit 587ddb48f0
1 changed files with 9 additions and 0 deletions
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9
libtransmission/fdlimit.c
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@ -342,6 +342,15 @@ TrOpenFile( int i,
return err;
}
/* If the file already exists and it's too large, truncate it.
* This is a fringe case that happens if a torrent's been updated
* and one of the updated torrent's files is smaller.
* http://trac.transmissionbt.com/ticket/2228
* https://bugs.launchpad.net/ubuntu/+source/transmission/+bug/318249
*/
if( alreadyExisted && ( desiredFileSize < (uint64_t)sb.st_size ) )
ftruncate( file->fd, desiredFileSize );
if( doWrite && !alreadyExisted && ( preallocationMode == TR_PREALLOCATE_SPARSE ) )
preallocateFileSparse( file->fd, desiredFileSize );