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-rw-r--r--fs/ext4/file.c51
1 files changed, 3 insertions, 48 deletions
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index e4095e988eb..cb70f1812a7 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -181,8 +181,8 @@ static int ext4_file_open(struct inode * inode, struct file * filp)
path.dentry = mnt->mnt_root;
cp = d_path(&path, buf, sizeof(buf));
if (!IS_ERR(cp)) {
- memcpy(sbi->s_es->s_last_mounted, cp,
- sizeof(sbi->s_es->s_last_mounted));
+ strlcpy(sbi->s_es->s_last_mounted, cp,
+ sizeof(sbi->s_es->s_last_mounted));
ext4_mark_super_dirty(sb);
}
}
@@ -224,53 +224,8 @@ loff_t ext4_llseek(struct file *file, loff_t offset, int origin)
maxbytes = EXT4_SB(inode->i_sb)->s_bitmap_maxbytes;
else
maxbytes = inode->i_sb->s_maxbytes;
- mutex_lock(&inode->i_mutex);
- switch (origin) {
- case SEEK_END:
- offset += inode->i_size;
- break;
- case SEEK_CUR:
- if (offset == 0) {
- mutex_unlock(&inode->i_mutex);
- return file->f_pos;
- }
- offset += file->f_pos;
- break;
- case SEEK_DATA:
- /*
- * In the generic case the entire file is data, so as long as
- * offset isn't at the end of the file then the offset is data.
- */
- if (offset >= inode->i_size) {
- mutex_unlock(&inode->i_mutex);
- return -ENXIO;
- }
- break;
- case SEEK_HOLE:
- /*
- * There is a virtual hole at the end of the file, so as long as
- * offset isn't i_size or larger, return i_size.
- */
- if (offset >= inode->i_size) {
- mutex_unlock(&inode->i_mutex);
- return -ENXIO;
- }
- offset = inode->i_size;
- break;
- }
-
- if (offset < 0 || offset > maxbytes) {
- mutex_unlock(&inode->i_mutex);
- return -EINVAL;
- }
-
- if (offset != file->f_pos) {
- file->f_pos = offset;
- file->f_version = 0;
- }
- mutex_unlock(&inode->i_mutex);
- return offset;
+ return generic_file_llseek_size(file, offset, origin, maxbytes);
}
const struct file_operations ext4_file_operations = {