diff options
| -rw-r--r-- | source3/smbd/server.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/source3/smbd/server.c b/source3/smbd/server.c index 08cf013920..39580d008d 100644 --- a/source3/smbd/server.c +++ b/source3/smbd/server.c @@ -2058,7 +2058,8 @@ int read_file(int fnum,char *data,uint32 pos,int n) #if USE_MMAP if (Files[fnum].mmap_ptr) { - int num = MIN(n,(int)(Files[fnum].mmap_size-pos)); + int num = (Files[fnum].mmap_size > pos) ? (Files[fnum].mmap_size - pos) : -1; + num = MIN(n,num); if (num > 0) { memcpy(data,Files[fnum].mmap_ptr+pos,num); |