diff options
Diffstat (limited to 'fs/ext4/ext4fs.c')
| -rw-r--r-- | fs/ext4/ext4fs.c | 11 |
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; } |