@@ -236,6 +236,27 @@ loff_t ext4_llseek(struct file *file, loff_t offset, int origin)
}
offset += file->f_pos;
break;
+ case SEEK_DATA:
+ /*
+ * For now the entire file is considered data, so the only valid
+ * next data section is position 0.
+ */
+ if (offset != 0 || inode->i_size == 0) {
+ 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) {
Since Ext4 has its own lseek we need to make sure it handles SEEK_HOLE/SEEK_DATA. For now just do the same thing that is done in the generic case, somebody else can come along and make it do fancy things later. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> --- v2->v3: Nothing since this is the first time posting this :) fs/ext4/file.c | 21 +++++++++++++++++++++ 1 files changed, 21 insertions(+), 0 deletions(-)