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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/file.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/file.c')
-rw-r--r--fs/ceph/file.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 0a292459c89..0d0eae05598 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -768,13 +768,16 @@ static loff_t ceph_llseek(struct file *file, loff_t offset, int origin)
mutex_lock(&inode->i_mutex);
__ceph_do_pending_vmtruncate(inode);
- switch (origin) {
- case SEEK_END:
+ if (origin != SEEK_CUR || origin != SEEK_SET) {
ret = ceph_do_getattr(inode, CEPH_STAT_CAP_SIZE);
if (ret < 0) {
offset = ret;
goto out;
}
+ }
+
+ switch (origin) {
+ case SEEK_END:
offset += inode->i_size;
break;
case SEEK_CUR:
@@ -790,6 +793,19 @@ static loff_t ceph_llseek(struct file *file, loff_t offset, int origin)
}
offset += file->f_pos;
break;
+ case SEEK_DATA:
+ if (offset >= inode->i_size) {
+ ret = -ENXIO;
+ goto out;
+ }
+ break;
+ case SEEK_HOLE:
+ if (offset >= inode->i_size) {
+ ret = -ENXIO;
+ goto out;
+ }
+ offset = inode->i_size;
+ break;
}
if (offset < 0 || offset > inode->i_sb->s_maxbytes) {