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authorJosef Bacik <josef@redhat.com>2011-07-18 13:21:38 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2011-07-20 20:47:58 -0400
commit06222e491e663dac939f04b125c9dc52126a75c4 (patch)
tree99636fd666c8148a5bf58ea4844263d4b3a36310 /fs/ceph/dir.c
parentc334b1138bd44bea578eab7971c59bd9212a1093 (diff)
fs: handle SEEK_HOLE/SEEK_DATA properly in all fs's that define their own llseek
This converts everybody to handle SEEK_HOLE/SEEK_DATA properly. In some cases we just return -EINVAL, in others we do the normal generic thing, and in others we're simply making sure that the properly due-dilligence is done. For example in NFS/CIFS we need to make sure the file size is update properly for the SEEK_HOLE and SEEK_DATA case, but since it calls the generic llseek stuff itself that is all we have to do. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ceph/dir.c')
-rw-r--r--fs/ceph/dir.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index e8477dc51b4..0972b457a03 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -446,14 +446,19 @@ static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int origin)
loff_t retval;
mutex_lock(&inode->i_mutex);
+ retval = -EINVAL;
switch (origin) {
case SEEK_END:
offset += inode->i_size + 2; /* FIXME */
break;
case SEEK_CUR:
offset += file->f_pos;
+ case SEEK_SET:
+ break;
+ default:
+ goto out;
}
- retval = -EINVAL;
+
if (offset >= 0 && offset <= inode->i_sb->s_maxbytes) {
if (offset != file->f_pos) {
file->f_pos = offset;
@@ -477,6 +482,7 @@ static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int origin)
if (offset > old_offset)
fi->dir_release_count--;
}
+out:
mutex_unlock(&inode->i_mutex);
return retval;
}