diff options
| -rw-r--r-- | lib/system.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/system.h b/lib/system.h index ef46267..e7f531c 100644 --- a/lib/system.h +++ b/lib/system.h @@ -389,9 +389,16 @@ extern int errno; # define ST_NBLOCKSIZE 512 #endif +/* Network Appliance file systems store small files directly in the + inode if st_size <= 64; in this case the number of blocks can be + zero. Perhaps other file systems have similar problems; so, + somewhat arbitrarily, do not consider a file to be sparse if + it has no blocks but st_size < ST_NBLOCKSIZE. */ #define ST_IS_SPARSE(st) \ (ST_NBLOCKS (st) \ - < ((st).st_size / ST_NBLOCKSIZE + ((st).st_size % ST_NBLOCKSIZE != 0))) + < ((st).st_size / ST_NBLOCKSIZE \ + + ((st).st_size % ST_NBLOCKSIZE != 0 \ + && (st).st_size / ST_NBLOCKSIZE != 0))) /* Declare standard functions. */ |