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, 103 deletions

diff --git a/fs/ceph/armor.c b/fs/ceph/armor.c
deleted file mode 100644
index eb2a666b0be7..000000000000
--- a/fs/ceph/armor.c
+++ /dev/null
@@ -1,103 +0,0 @@
-
-#include <linux/errno.h>
-
-int ceph_armor(char *dst, const char *src, const char *end);
-int ceph_unarmor(char *dst, const char *src, const char *end);
-
-/*
- * base64 encode/decode.
- */
-
-static const char *pem_key =
-        "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-
-static int encode_bits(int c)
-{
-        return pem_key[c];
-}
-
-static int decode_bits(char c)
-{
-        if (c >= 'A' && c <= 'Z')
-                return c - 'A';
-        if (c >= 'a' && c <= 'z')
-                return c - 'a' + 26;
-        if (c >= '0' && c <= '9')
-                return c - '0' + 52;
-        if (c == '+')
-                return 62;
-        if (c == '/')
-                return 63;
-        if (c == '=')
-                return 0; /* just non-negative, please */
-        return -EINVAL;
-}
-
-int ceph_armor(char *dst, const char *src, const char *end)
-{
-        int olen = 0;
-        int line = 0;
-
-        while (src < end) {
-                unsigned char a, b, c;
-
-                a = *src++;
-                *dst++ = encode_bits(a >> 2);
-                if (src < end) {
-                        b = *src++;
-                        *dst++ = encode_bits(((a & 3) << 4) | (b >> 4));
-                        if (src < end) {
-                                c = *src++;
-                                *dst++ = encode_bits(((b & 15) << 2) |
-                                                     (c >> 6));
-                                *dst++ = encode_bits(c & 63);
-                        } else {
-                                *dst++ = encode_bits((b & 15) << 2);
-                                *dst++ = '=';
-                        }
-                } else {
-                        *dst++ = encode_bits(((a & 3) << 4));
-                        *dst++ = '=';
-                        *dst++ = '=';
-                }
-                olen += 4;
-                line += 4;
-                if (line == 64) {
-                        line = 0;
-                        *(dst++) = '\n';
-                        olen++;
-                }
-        }
-        return olen;
-}
-
-int ceph_unarmor(char *dst, const char *src, const char *end)
-{
-        int olen = 0;
-
-        while (src < end) {
-                int a, b, c, d;
-
-                if (src < end && src[0] == '\n')
-                        src++;
-                if (src + 4 > end)
-                        return -EINVAL;
-                a = decode_bits(src[0]);
-                b = decode_bits(src[1]);
-                c = decode_bits(src[2]);
-                d = decode_bits(src[3]);
-                if (a < 0 || b < 0 || c < 0 || d < 0)
-                        return -EINVAL;
-
-                *dst++ = (a << 2) | (b >> 4);
-                if (src[2] == '=')
-                        return olen + 1;
-                *dst++ = ((b & 15) << 4) | (c >> 2);
-                if (src[3] == '=')
-                        return olen + 2;
-                *dst++ = ((c & 3) << 6) | d;
-                olen += 3;
-                src += 4;
-        }
-        return olen;
-}