ceph: factor out libceph from Ceph file system

This factors out protocol and low-level storage parts of ceph into a
separate libceph module living in net/ceph and include/linux/ceph.  This
is mostly a matter of moving files around.  However, a few key pieces
of the interface change as well:

 - ceph_client becomes ceph_fs_client and ceph_client, where the latter
   captures the mon and osd clients, and the fs_client gets the mds client
   and file system specific pieces.
 - Mount option parsing and debugfs setup is correspondingly broken into
   two pieces.
 - The mon client gets a generic handler callback for otherwise unknown
   messages (mds map, in this case).
 - The basic supported/required feature bits can be expanded (and are by
   ceph_fs_client).

No functional change, aside from some subtle error handling cases that got
cleaned up in the refactoring process.

Signed-off-by: Sage Weil <sage@newdream.net>

1 files changed, 0 insertions, 72 deletions

diff --git a/fs/ceph/ceph_fs.c b/fs/ceph/ceph_fs.c
deleted file mode 100644
index 3ac6cc7c1156..000000000000
--- a/fs/ceph/ceph_fs.c
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * Some non-inline ceph helpers
- */
-#include "types.h"
-
-/*
- * return true if @layout appears to be valid
- */
-int ceph_file_layout_is_valid(const struct ceph_file_layout *layout)
-{
-        __u32 su = le32_to_cpu(layout->fl_stripe_unit);
-        __u32 sc = le32_to_cpu(layout->fl_stripe_count);
-        __u32 os = le32_to_cpu(layout->fl_object_size);
-
-        /* stripe unit, object size must be non-zero, 64k increment */
-        if (!su || (su & (CEPH_MIN_STRIPE_UNIT-1)))
-                return 0;
-        if (!os || (os & (CEPH_MIN_STRIPE_UNIT-1)))
-                return 0;
-        /* object size must be a multiple of stripe unit */
-        if (os < su || os % su)
-                return 0;
-        /* stripe count must be non-zero */
-        if (!sc)
-                return 0;
-        return 1;
-}
-
-
-int ceph_flags_to_mode(int flags)
-{
-        int mode;
-
-#ifdef O_DIRECTORY  /* fixme */
-        if ((flags & O_DIRECTORY) == O_DIRECTORY)
-                return CEPH_FILE_MODE_PIN;
-#endif
-        if ((flags & O_APPEND) == O_APPEND)
-                flags |= O_WRONLY;
-
-        if ((flags & O_ACCMODE) == O_RDWR)
-                mode = CEPH_FILE_MODE_RDWR;
-        else if ((flags & O_ACCMODE) == O_WRONLY)
-                mode = CEPH_FILE_MODE_WR;
-        else
-                mode = CEPH_FILE_MODE_RD;
-
-#ifdef O_LAZY
-        if (flags & O_LAZY)
-                mode |= CEPH_FILE_MODE_LAZY;
-#endif
-
-        return mode;
-}
-
-int ceph_caps_for_mode(int mode)
-{
-        int caps = CEPH_CAP_PIN;
-
-        if (mode & CEPH_FILE_MODE_RD)
-                caps |= CEPH_CAP_FILE_SHARED |
-                        CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE;
-        if (mode & CEPH_FILE_MODE_WR)
-                caps |= CEPH_CAP_FILE_EXCL |
-                        CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER |
-                        CEPH_CAP_AUTH_SHARED | CEPH_CAP_AUTH_EXCL |
-                        CEPH_CAP_XATTR_SHARED | CEPH_CAP_XATTR_EXCL;
-        if (mode & CEPH_FILE_MODE_LAZY)
-                caps |= CEPH_CAP_FILE_LAZYIO;
-
-        return caps;
-}