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Diffstat (limited to 'fs/ext4/ext4fs.c')
-rw-r--r--fs/ext4/ext4fs.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/fs/ext4/ext4fs.c b/fs/ext4/ext4fs.c
index 943b5bc..258b937 100644
--- a/fs/ext4/ext4fs.c
+++ b/fs/ext4/ext4fs.c
@@ -25,6 +25,7 @@
#include <ext_common.h>
#include <ext4fs.h>
#include "ext4_common.h"
+#include <div64.h>
int ext4fs_symlinknest;
struct ext_filesystem ext_fs;
@@ -67,11 +68,11 @@ int ext4fs_read_file(struct ext2fs_node *node, loff_t pos,
if (len > filesize)
len = filesize;
- blockcnt = ((len + pos) + blocksize - 1) / blocksize;
+ blockcnt = lldiv(((len + pos) + blocksize - 1), blocksize);
- for (i = pos / blocksize; i < blockcnt; i++) {
+ for (i = lldiv(pos, blocksize); i < blockcnt; i++) {
lbaint_t blknr;
- int blockoff = pos % blocksize;
+ int blockoff = pos - (blocksize * i);
int blockend = blocksize;
int skipfirst = 0;
blknr = read_allocated_block(&(node->inode), i);
@@ -82,7 +83,7 @@ int ext4fs_read_file(struct ext2fs_node *node, loff_t pos,
/* Last block. */
if (i == blockcnt - 1) {
- blockend = (len + pos) % blocksize;
+ blockend = (len + pos) - (blocksize * i);
/* The last portion is exactly blocksize. */
if (!blockend)
@@ -90,7 +91,7 @@ int ext4fs_read_file(struct ext2fs_node *node, loff_t pos,
}
/* First block. */
- if (i == pos / blocksize) {
+ if (i == lldiv(pos, blocksize)) {
skipfirst = blockoff;
blockend -= skipfirst;
}